Jump to 0.3.1

49 files changed, 2332 insertions, 444 deletions

diff --git a/README.md b/README.md
index 6762b28a..ab87217c 100644
--- a/README.md
+++ b/README.md
@@ -1,52 +1,70 @@
-HackMD 0.2.9
+HackMD 0.3.1
 ===
 
-HackMD is a realtime collaborative markdown notes on all platforms.  
-Inspired by Hackpad, but more focusing on speed and flexibility.  
-Still in early stage, feel free to fork or contribute to this.  
+HackMD is a realtime collaborative markdown notes on all platforms.
+Inspired by Hackpad, but more focusing on speed and flexibility.
+Still in early stage, feel free to fork or contribute to this.
 
 Thanks for your using! :smile:
 
-Dependency
+Database dependency
 ---
 - PostgreSQL 9.3.6 or 9.4.1
 - MongoDB 3.0.2
 
-Import db schema
+Import database schema
 ---
-The notes are store in PostgreSQL, the schema is in the `hackmd_schema.sql`  
+The notes are store in PostgreSQL, the schema is in the `hackmd_schema.sql`
 To import the sql file in PostgreSQL, type `psql -i hackmd_schema.sql`
 
-The users, temps and sessions are store in MongoDB, which don't need schema, so just make sure you have the correct connection string.  
+The users, temps and sessions are store in MongoDB, which don't need schema, so just make sure you have the correct connection string.
 
-Config
+Structure
+---
+```
+hackmd/
+├── logs/			--- server logs
+├── backups/		--- db backups
+├── tmp/			--- temporary files
+├── lib/			--- server libraries
+└── public/			--- client files
+	├── css/		--- css styles
+	├── js/			--- js scripts
+	├── vendor/		--- vendor includes
+	└── views/		--- view templates
+```
+
+Configure
 ---
 There are some config you need to change in below files
 ```
-./run.sh
-./config.js
-./public/js/common.js
+./Procfile				--- for heroku start
+./run.sh				--- for forever start
+./processes.json		--- for pm2 start
+./config.js				--- for server settings
+./public/js/common.js	--- for client settings
+./hackmd				--- for logrotate
 ```
 
-The script `run.sh`, it's for someone like me to run the server via npm package `forever`, and can passing environment variable to the server, like heroku does.
+**From 0.3.1, we no longer recommend using `forever` to run your server.**
 
-To install `forever`, just type `npm install forever -g`
+We using `pm2` to run server.
+See [here](https://github.com/Unitech/pm2) for details.
 
 You can use SSL to encrypt your site by passing certificate path in the `config.js` and set `usessl=true`
 
 Run a server
 ---
-To run the server, type `bash run.sh`  
-Log will be at `~/.forever/hackmd.log`
+ - forever: `bash run.sh`
+ - pm2: `pm2 start processes.json`
 
 Stop a server
 ---
-To stop the server, simply type `forever stop hackmd`
+ - forever: `forever stop hackmd`
+ - pm2: `pm2 stop hackmd`
 
 Backup db
 ---
-To backup the db, type `bash backup.sh`  
-Backup files will be at `./backups/`
-
+To backup the db, type `bash backup.sh`
 
 **License under MIT.**
\ No newline at end of file
diff --git a/app.js b/app.js
index c5286974..c2ff400d 100644
--- a/app.js
+++ b/app.js
@@ -49,13 +49,15 @@ if (config.usessl) {
     var app = express();
     var server = require('http').createServer(app);
 }
-//socket io listen
-var io = require('socket.io').listen(server);
+
 //logger
 app.use(morgan('combined', {
     "stream": logger.stream
 }));
 
+//socket io
+var io = require('socket.io')(server);
+
 // connect to the mongodb
 mongoose.connect(process.env.MONGOLAB_URI || config.mongodbstring);
 
@@ -80,7 +82,7 @@ var sessionStore = new MongoStore({
         touchAfter: config.sessiontouch
     },
     function (err) {
-        console.log(err);
+        logger.info(err);
     });
 
 //compression
@@ -115,12 +117,12 @@ app.use(passport.session());
 
 //serialize and deserialize
 passport.serializeUser(function (user, done) {
-    //console.log('serializeUser: ' + user._id);
+    //logger.info('serializeUser: ' + user._id);
     done(null, user._id);
 });
 passport.deserializeUser(function (id, done) {
     User.model.findById(id, function (err, user) {
-        //console.log(user)
+        //logger.info(user)
         if (!err) done(null, user);
         else done(err, null);
     })
@@ -163,7 +165,7 @@ app.get("/temp", function (req, res) {
                     });
                     temp.remove(function (err) {
                         if (err)
-                            console.log('remove temp failed: ' + err);
+                            logger.error('remove temp failed: ' + err);
                     });
                 }
             });
@@ -182,7 +184,7 @@ app.post("/temp", urlencodedParser, function (req, res) {
             response.errorForbidden(res);
         else {
             if (config.debug)
-                console.log('SERVER received temp from [' + host + ']: ' + req.body.data);
+                logger.info('SERVER received temp from [' + host + ']: ' + req.body.data);
             Temp.newTemp(id, data, function (err, temp) {
                 if (!err && temp) {
                     res.header("Access-Control-Allow-Origin", "*");
@@ -247,7 +249,7 @@ app.get('/auth/dropbox/callback',
 //logout
 app.get('/logout', function (req, res) {
     if (config.debug && req.session.passport.user)
-        console.log('user logout: ' + req.session.passport.user);
+        logger.info('user logout: ' + req.session.passport.user);
     req.logout();
     res.redirect('/');
 });
@@ -256,7 +258,7 @@ app.get('/history', function (req, res) {
     if (req.isAuthenticated()) {
         User.model.findById(req.session.passport.user, function (err, user) {
             if (err) {
-                console.log('read history failed: ' + err);
+                logger.error('read history failed: ' + err);
             } else {
                 var history = [];
                 if (user.history)
@@ -274,18 +276,18 @@ app.get('/history', function (req, res) {
 app.post('/history', urlencodedParser, function (req, res) {
     if (req.isAuthenticated()) {
         if (config.debug)
-            console.log('SERVER received history from [' + req.session.passport.user + ']: ' + req.body.history);
+            logger.info('SERVER received history from [' + req.session.passport.user + ']: ' + req.body.history);
         User.model.findById(req.session.passport.user, function (err, user) {
             if (err) {
-                console.log('write history failed: ' + err);
+                logger.error('write history failed: ' + err);
             } else {
                 user.history = req.body.history;
                 user.save(function (err) {
                     if (err) {
-                        console.log('write user history failed: ' + err);
+                        logger.error('write user history failed: ' + err);
                     } else {
                         if (config.debug)
-                            console.log("write user history success: " + user._id);
+                            logger.info("write user history success: " + user._id);
                     };
                 });
             }
@@ -300,7 +302,7 @@ app.get('/me', function (req, res) {
     if (req.isAuthenticated()) {
         User.model.findById(req.session.passport.user, function (err, user) {
             if (err) {
-                console.log('read me failed: ' + err);
+                logger.error('read me failed: ' + err);
             } else {
                 var profile = JSON.parse(user.profile);
                 res.send({
@@ -324,20 +326,25 @@ app.post('/uploadimage', function (req, res) {
             response.errorForbidden(res);
         } else {
             if (config.debug)
-                console.log('SERVER received uploadimage: ' + JSON.stringify(files.image));
+                logger.info('SERVER received uploadimage: ' + JSON.stringify(files.image));
             imgur.setClientId(config.imgur.clientID);
-            imgur.uploadFile(files.image.path)
-                .then(function (json) {
-                    if (config.debug)
-                        console.log('SERVER uploadimage success: ' + JSON.stringify(json));
-                    res.send({
-                        link: json.data.link
+            try {
+                imgur.uploadFile(files.image.path)
+                    .then(function (json) {
+                        if (config.debug)
+                            logger.info('SERVER uploadimage success: ' + JSON.stringify(json));
+                        res.send({
+                            link: json.data.link
+                        });
+                    })
+                    .catch(function (err) {
+                        logger.error(err);
+                        res.send('upload image error');
                     });
-                })
-                .catch(function (err) {
-                    console.error(err);
-                    res.send(err.message);
-                });
+            } catch (err) {
+                logger.error(err);
+                res.send('upload image error');
+            }
         }
     });
 });
@@ -345,6 +352,10 @@ app.post('/uploadimage', function (req, res) {
 app.get("/new", response.newNote);
 //get features
 app.get("/features", response.showFeatures);
+//get share note
+app.get("/s/:shortid", response.showShareNote);
+//share note actions
+app.get("/s/:shortid/:action", response.shareNoteActions);
 //get note by id
 app.get("/:noteId", response.showNote);
 //note actions
@@ -370,10 +381,10 @@ io.sockets.on('connection', realtime.connection);
 //listen
 if (config.usessl) {
     server.listen(config.sslport, function () {
-        console.log('HTTPS Server listening at sslport %d', config.sslport);
+        logger.info('HTTPS Server listening at sslport %d', config.sslport);
     });
 } else {
     server.listen(config.port, function () {
-        console.log('HTTP Server listening at port %d', config.port);
+        logger.info('HTTP Server listening at port %d', config.port);
     });
 }
\ No newline at end of file
diff --git a/backups/.keep b/backups/.keep
new file mode 100644
index 00000000..e69de29b
--- /dev/null
+++ b/backups/.keep
diff --git a/config.js b/config.js
index 03764fef..bf335068 100644
--- a/config.js
+++ b/config.js
@@ -11,7 +11,7 @@ var urladdport = true; //add port on getserverurl
 
 var config = {
     debug: true,
-    version: '0.2.8',
+    version: '0.3.1',
     domain: domain,
     alloworigin: ['add here to allow origin to cross'],
     testport: testport,
diff --git a/hackmd b/hackmd
new file mode 100644
index 00000000..9005e2aa
--- /dev/null
+++ b/hackmd
@@ -0,0 +1,11 @@
+/home/hackmd/logs/*.log {
+  daily
+  rotate 365
+  missingok
+  notifempty
+  compress
+  sharedscripts
+  copytruncate
+  dateext
+  dateformat %Y-%m-%d
+}
\ No newline at end of file
diff --git a/lib/auth.js b/lib/auth.js
index 456c9dff..dc8b94ca 100644
--- a/lib/auth.js
+++ b/lib/auth.js
@@ -7,17 +7,18 @@ var GithubStrategy = require('passport-github').Strategy;
 var DropboxStrategy = require('passport-dropbox-oauth2').Strategy;
 
 //core
-var User = require('./user.js')
-var config = require('../config.js')
+var User = require('./user.js');
+var config = require('../config.js');
+var logger = require("./logger.js");
 
 function callback(accessToken, refreshToken, profile, done) {
-    //console.log(profile.displayName || profile.username);
+    //logger.info(profile.displayName || profile.username);
     User.findOrNewUser(profile.id, profile, function (err, user) {
         if (err || user == null) {
-            console.log('auth callback failed: ' + err);
+            logger.error('auth callback failed: ' + err);
         } else {
-            if(config.debug && user)
-                console.log('user login: ' + user._id);
+            if (config.debug && user)
+                logger.info('user login: ' + user._id);
             done(null, user);
         }
     });
diff --git a/lib/db.js b/lib/db.js
index d924cdf8..e0f873e5 100644
--- a/lib/db.js
+++ b/lib/db.js
@@ -6,6 +6,7 @@ var util = require('util');
 
 //core
 var config = require("../config.js");
+var logger = require("./logger.js");
 
 //public
 var db = {
@@ -48,18 +49,18 @@ function newToDB(id, owner, body, callback) {
         if (err) {
             client.end();
             callback(err, null);
-            return console.error('could not connect to postgres', err);
+            return logger.error('could not connect to postgres', err);
         }
         var newnotequery = util.format(insertquery, id, owner, body);
-        //console.log(newnotequery);
+        //logger.info(newnotequery);
         client.query(newnotequery, function (err, result) {
             client.end();
             if (err) {
                 callback(err, null);
-                return console.error("new note to db failed: " + err);
+                return logger.error("new note to db failed: " + err);
             } else {
                 if (config.debug)
-                    console.log("new note to db success");
+                    logger.info("new note to db success");
                 callback(null, result);
             }
         });
@@ -72,22 +73,22 @@ function readFromDB(id, callback) {
         if (err) {
             client.end();
             callback(err, null);
-            return console.error('could not connect to postgres', err);
+            return logger.error('could not connect to postgres', err);
         }
         var readquery = util.format(selectquery, id);
-        //console.log(readquery);
+        //logger.info(readquery);
         client.query(readquery, function (err, result) {
             client.end();
             if (err) {
                 callback(err, null);
-                return console.error("read from db failed: " + err);
+                return logger.error("read from db failed: " + err);
             } else {
-                //console.log(result.rows);
+                //logger.info(result.rows);
                 if (result.rows.length <= 0) {
                     callback("not found note in db: " + id, null);
                 } else {
                     if(config.debug)
-                        console.log("read from db success");
+                        logger.info("read from db success");
                     callback(null, result);
                 }
             }
@@ -101,18 +102,18 @@ function saveToDB(id, title, data, callback) {
         if (err) {
             client.end();
             callback(err, null);
-            return console.error('could not connect to postgres', err);
+            return logger.error('could not connect to postgres', err);
         }
         var savequery = util.format(updatequery, title, data, id);
-        //console.log(savequery);
+        //logger.info(savequery);
         client.query(savequery, function (err, result) {
             client.end();
             if (err) {
                 callback(err, null);
-                return console.error("save to db failed: " + err);
+                return logger.error("save to db failed: " + err);
             } else {
                 if (config.debug)
-                    console.log("save to db success");
+                    logger.info("save to db success");
                 callback(null, result);
             }
         });
@@ -125,20 +126,20 @@ function countFromDB(callback) {
         if (err) {
             client.end();
             callback(err, null);
-            return console.error('could not connect to postgres', err);
+            return logger.error('could not connect to postgres', err);
         }
         client.query(countquery, function (err, result) {
             client.end();
             if (err) {
                 callback(err, null);
-                return console.error("count from db failed: " + err);
+                return logger.error("count from db failed: " + err);
             } else {
-                //console.log(result.rows);
+                //logger.info(result.rows);
                 if (result.rows.length <= 0) {
                     callback("not found note in db", null);
                 } else {
                     if(config.debug)
-                        console.log("count from db success");
+                        logger.info("count from db success");
                     callback(null, result);
                 }
             }
diff --git a/lib/logger.js b/lib/logger.js
index c843330b..61299c10 100644
--- a/lib/logger.js
+++ b/lib/logger.js
@@ -7,7 +7,8 @@ var logger = new winston.Logger({
             level: 'debug',
             handleExceptions: true,
             json: false,
-            colorize: true
+            colorize: true,
+            timestamp: true
         })
     ],
     exitOnError: false
diff --git a/lib/note.js b/lib/note.js
index 1212e1a6..dc384b7f 100644
--- a/lib/note.js
+++ b/lib/note.js
@@ -1,22 +1,56 @@
 //note
 //external modules
+var mongoose = require('mongoose');
+var Schema = mongoose.Schema;
 var LZString = require('lz-string');
 var marked = require('marked');
 var cheerio = require('cheerio');
+var shortId = require('shortid');
 
 //others
 var db = require("./db.js");
+var logger = require("./logger.js");
+
+//permission types
+permissionTypes = ["freely", "editable", "locked"];
+
+// create a note model
+var model = mongoose.model('note', {
+    id: String,
+    shortid: {
+        type: String,
+        unique: true,
+        default: shortId.generate
+    },
+    permission: {
+        type: String,
+        enum: permissionTypes
+    },
+    viewcount: {
+        type: Number,
+        default: 0
+    },
+    updated: Date,
+    created: Date
+});
 
 //public
 var note = {
+    model: model,
+    findNote: findNote,
+    newNote: newNote,
+    findOrNewNote: findOrNewNote,
     checkNoteIdValid: checkNoteIdValid,
     checkNoteExist: checkNoteExist,
-    getNoteTitle: getNoteTitle
+    getNoteTitle: getNoteTitle,
+    generateWebTitle: generateWebTitle,
+    increaseViewCount: increaseViewCount,
+    updatePermission: updatePermission
 };
 
 function checkNoteIdValid(noteId) {
     try {
-        //console.log(noteId);
+        //logger.info(noteId);
         var id = LZString.decompressFromBase64(noteId);
         if (!id) return false;
         var uuidRegex = /^[0-9a-f]{8}-[0-9a-f]{4}-[1-5][0-9a-f]{3}-[89ab][0-9a-f]{3}-[0-9a-f]{12}$/i;
@@ -26,21 +60,21 @@ function checkNoteIdValid(noteId) {
         else
             return false;
     } catch (err) {
-        console.error(err);
+        logger.error(err);
         return false;
     }
 }
 
 function checkNoteExist(noteId) {
     try {
-        //console.log(noteId);
+        //logger.info(noteId);
         var id = LZString.decompressFromBase64(noteId);
         db.readFromDB(id, function (err, result) {
             if (err) return false;
             return true;
         });
     } catch (err) {
-        console.error(err);
+        logger.error(err);
         return false;
     }
 }
@@ -50,11 +84,118 @@ function getNoteTitle(body) {
     var $ = cheerio.load(marked(body));
     var h1s = $("h1");
     var title = "";
-    if (h1s.length > 0)
+    if (h1s.length > 0 && h1s.first().text().split('\n').length == 1)
         title = h1s.first().text();
     else
         title = "Untitled";
     return title;
 }
 
+//generate note web page title
+function generateWebTitle(title) {
+    title = !title || title == "Untitled" ? "HackMD - Collaborative notes" : title + " - HackMD";
+    return title;
+}
+
+function findNote(id, callback) {
+    model.findOne({
+        $or: [
+            {
+                id: id
+            },
+            {
+                shortid: id
+            }
+        ]
+    }, function (err, note) {
+        if (err) {
+            logger.error('find note failed: ' + err);
+            callback(err, null);
+        }
+        if (!err && note) {
+            callback(null, note);
+        } else {
+            logger.error('find note failed: ' + err);
+            callback(err, null);
+        };
+    });
+}
+
+function newNote(id, permission, callback) {
+    var note = new model({
+        id: id,
+        permission: permission,
+        updated: Date.now(),
+        created: Date.now()
+    });
+    note.save(function (err) {
+        if (err) {
+            logger.error('new note failed: ' + err);
+            callback(err, null);
+        } else {
+            logger.info("new note success: " + note.id);
+            callback(null, note);
+        };
+    });
+}
+
+function findOrNewNote(id, permission, callback) {
+    findNote(id, function (err, note) {
+        if (err || !note) {
+            newNote(id, permission, function (err, note) {
+                if (err) {
+                    logger.error('find or new note failed: ' + err);
+                    callback(err, null);
+                } else {
+                    callback(null, note);
+                }
+            });
+        } else {
+            if (!note.permission) {
+                note.permission = permission;
+                note.updated = Date.now();
+                note.save(function (err) {
+                    if (err) {
+                        logger.error('add note permission failed: ' + err);
+                        callback(err, null);
+                    } else {
+                        logger.info("add note permission success: " + note.id);
+                        callback(null, note);
+                    };
+                });
+            } else {
+                callback(null, note);
+            }
+        }
+    });
+}
+
+function increaseViewCount(note, callback) {
+    note.viewcount++;
+    note.updated = Date.now();
+    note.save(function (err) {
+        if (err) {
+            logger.error('increase note viewcount failed: ' + err);
+            callback(err, null);
+        } else {
+            logger.info("increase note viewcount success: " + note.id);
+            callback(null, note);
+        };
+    });
+}
+
+function updatePermission(note, permission, callback) {
+    note.permission = permission;
+    note.updated = Date.now();
+    note.save(function (err) {
+        if (err) {
+            logger.error('update note permission failed: ' + err);
+            callback(err, null);
+        } else {
+            logger.info("update note permission success: " + note.id);
+            callback(null, note);
+        };
+    });
+}
+
 module.exports = note;
\ No newline at end of file
diff --git a/lib/realtime.js b/lib/realtime.js
index 1a57c77e..57038b72 100644
--- a/lib/realtime.js
+++ b/lib/realtime.js
@@ -9,9 +9,12 @@ var shortId = require('shortid');
 var randomcolor = require("randomcolor");
 var Chance = require('chance'),
     chance = new Chance();
+var md5 = require("blueimp-md5").md5;
+var moment = require('moment');
 
 //core
 var config = require("../config.js");
+var logger = require("./logger.js");
 
 //others
 var db = require("./db.js");
@@ -49,7 +52,7 @@ function secure(socket, next) {
             next(new Error('AUTH failed: No cookie transmitted.'));
         }
         if (config.debug)
-            console.log("AUTH success cookie: " + handshakeData.sessionID);
+            logger.info("AUTH success cookie: " + handshakeData.sessionID);
 
         next();
     } catch (ex) {
@@ -65,9 +68,10 @@ var updater = setInterval(function () {
         var note = notes[key];
         if (note.isDirty) {
             if (config.debug)
-                console.log("updater found dirty note: " + key);
+                logger.info("updater found dirty note: " + key);
             var body = LZString.decompressFromUTF16(note.body);
             var title = Note.getNoteTitle(body);
+            title = LZString.compressToBase64(title);
             body = LZString.compressToBase64(body);
             db.saveToDB(key, title, body,
                 function (err, result) {});
@@ -75,36 +79,45 @@ var updater = setInterval(function () {
         }
         callback();
     }, function (err) {
-        if (err) return console.error('updater error', err);
+        if (err) return logger.error('updater error', err);
     });
 }, 5000);
 
 function getStatus(callback) {
     db.countFromDB(function (err, data) {
-        if (err) return console.log(err);
-        var regusers = 0;
-        var distinctregusers = 0;
+        if (err) return logger.info(err);
         var distinctaddresses = [];
+        var regaddresses = [];
+        var distinctregaddresses = [];
         Object.keys(users).forEach(function (key) {
-            var value = users[key];
-            if (value.login)
-                regusers++;
+            var user = users[key];
             var found = false;
             for (var i = 0; i < distinctaddresses.length; i++) {
-                if (value.address == distinctaddresses[i]) {
+                if (user.address == distinctaddresses[i]) {
                     found = true;
                     break;
                 }
             }
             if (!found) {
-                distinctaddresses.push(value.address);
-                if (value.login)
-                    distinctregusers++;
+                distinctaddresses.push(user.address);
+            }
+            if (user.login) {
+                regaddresses.push(user.address);
+                var found = false;
+                for (var i = 0; i < distinctregaddresses.length; i++) {
+                    if (user.address == distinctregaddresses[i]) {
+                        found = true;
+                        break;
+                    }
+                }
+                if (!found) {
+                    distinctregaddresses.push(user.address);
+                }
             }
         });
         User.getUserCount(function (err, regcount) {
             if (err) {
-                console.log('get status failed: ' + err);
+                logger.error('get status failed: ' + err);
                 return;
             }
             if (callback)
@@ -114,8 +127,8 @@ function getStatus(callback) {
                     distinctOnlineUsers: distinctaddresses.length,
                     notesCount: data.rows[0].count,
                     registeredUsers: regcount,
-                    onlineRegisteredUsers: regusers,
-                    distinctOnlineRegisteredUsers: distinctregusers
+                    onlineRegisteredUsers: regaddresses.length,
+                    distinctOnlineRegisteredUsers: distinctregaddresses.length
                 });
         });
     });
@@ -146,23 +159,40 @@ function emitOnlineUsers(socket) {
         if (user)
             users.push(buildUserOutData(user));
     });
-    notes[notename].socks.forEach(function (sock) {
-        var out = {
-            users: users
-        };
-        out = LZString.compressToUTF16(JSON.stringify(out));
-        sock.emit('online users', out);
-    });
+    var out = {
+        users: users
+    };
+    out = LZString.compressToUTF16(JSON.stringify(out));
+    for (var i = 0, l = notes[notename].socks.length; i < l; i++) {
+        var sock = notes[notename].socks[i];
+        if (sock && out)
+            sock.emit('online users', out);
+    };
 }
 
 function emitUserStatus(socket) {
     var notename = getNotenameFromSocket(socket);
     if (!notename || !notes[notename]) return;
-    notes[notename].socks.forEach(function (sock) {
+    var out = buildUserOutData(users[socket.id]);
+    for (var i = 0, l = notes[notename].socks.length; i < l; i++) {
+        var sock = notes[notename].socks[i];
         if (sock != socket) {
-            var out = buildUserOutData(users[socket.id]);
             sock.emit('user status', out);
         }
+    };
+}
+
+function emitRefresh(socket) {
+    var notename = getNotenameFromSocket(socket);
+    if (!notename || !notes[notename]) return;
+    var note = notes[notename];
+    socket.emit('refresh', {
+        owner: note.owner,
+        permission: note.permission,
+        body: note.body,
+        otk: note.otk,
+        hash: note.hash,
+        updatetime: note.updatetime
     });
 }
 
@@ -175,9 +205,7 @@ function finishConnection(socket, notename) {
     notes[notename].users[socket.id] = users[socket.id];
     notes[notename].socks.push(socket);
     emitOnlineUsers(socket);
-    socket.emit('refresh', {
-        body: notes[notename].body
-    });
+    emitRefresh(socket);
 
     //clear finished socket in queue
     for (var i = 0; i < connectionSocketQueue.length; i++) {
@@ -190,11 +218,11 @@ function finishConnection(socket, notename) {
         startConnection(connectionSocketQueue[0]);
 
     if (config.debug) {
-        console.log('SERVER connected a client to [' + notename + ']:');
-        console.log(JSON.stringify(users[socket.id]));
-        //console.log(notes);
+        logger.info('SERVER connected a client to [' + notename + ']:');
+        logger.info(JSON.stringify(users[socket.id]));
+        //logger.info(notes);
         getStatus(function (data) {
-            console.log(JSON.stringify(data));
+            logger.info(JSON.stringify(data));
         });
     }
 }
@@ -219,17 +247,34 @@ function startConnection(socket) {
                         connectionSocketQueue.splice(i, 1);
                 }
                 isConnectionBusy = false;
-                return console.error(err);
+                return logger.error(err);
             }
-            var body = LZString.decompressFromBase64(data.rows[0].content);
-            body = LZString.compressToUTF16(body);
-            notes[notename] = {
-                socks: [],
-                body: body,
-                isDirty: false,
-                users: {}
-            };
-            finishConnection(socket, notename);
+            var owner = data.rows[0].owner;
+            var permission = "freely";
+            if (owner && owner != "null") {
+                permission = "editable";
+            }
+            Note.findOrNewNote(notename, permission, function (err, note) {
+                if (err) {
+                    responseError(res, "404", "Not Found", "oops.");
+                    return;
+                }
+                var body = LZString.decompressFromBase64(data.rows[0].content);
+                body = LZString.compressToUTF16(body);
+                var updatetime = data.rows[0].update_time;
+                notes[notename] = {
+                    owner: owner,
+                    permission: note.permission,
+                    socks: [],
+                    body: body,
+                    isDirty: false,
+                    users: {},
+                    otk: shortId.generate(),
+                    hash: md5(body),
+                    updatetime: moment(updatetime).valueOf()
+                };
+                finishConnection(socket, notename);
+            });
         });
     } else {
         finishConnection(socket, notename);
@@ -241,8 +286,8 @@ function disconnect(socket) {
     isDisconnectBusy = true;
 
     if (config.debug) {
-        console.log("SERVER disconnected a client");
-        console.log(JSON.stringify(users[socket.id]));
+        logger.info("SERVER disconnected a client");
+        logger.info(JSON.stringify(users[socket.id]));
     }
     var notename = getNotenameFromSocket(socket);
     if (!notename) return;
@@ -251,24 +296,31 @@ function disconnect(socket) {
     }
     if (notes[notename]) {
         delete notes[notename].users[socket.id];
-        var index = notes[notename].socks.indexOf(socket);
-        if (index > -1) {
-            notes[notename].socks.splice(index, 1);
-        }
+        do {
+            var index = notes[notename].socks.indexOf(socket);
+            if (index != -1) {
+                notes[notename].socks.splice(index, 1);
+            }
+        } while (index != -1);
         if (Object.keys(notes[notename].users).length <= 0) {
-            var body = LZString.decompressFromUTF16(notes[notename].body);
-            var title = Note.getNoteTitle(body);
-            body = LZString.compressToBase64(body);
-            db.saveToDB(notename, title, body,
-                function (err, result) {
-                    delete notes[notename];
-                    if (config.debug) {
-                        //console.log(notes);
-                        getStatus(function (data) {
-                            console.log(JSON.stringify(data));
-                        });
-                    }
-                });
+            if (notes[notename].isDirty) {
+                var body = LZString.decompressFromUTF16(notes[notename].body);
+                var title = Note.getNoteTitle(body);
+                title = LZString.compressToBase64(title);
+                body = LZString.compressToBase64(body);
+                db.saveToDB(notename, title, body,
+                    function (err, result) {
+                        delete notes[notename];
+                        if (config.debug) {
+                            //logger.info(notes);
+                            getStatus(function (data) {
+                                logger.info(JSON.stringify(data));
+                            });
+                        }
+                    });
+            } else {
+                delete notes[notename];
+            }
         }
     }
     emitOnlineUsers(socket);
@@ -284,9 +336,9 @@ function disconnect(socket) {
         disconnect(disconnectSocketQueue[0]);
 
     if (config.debug) {
-        //console.log(notes);
+        //logger.info(notes);
         getStatus(function (data) {
-            console.log(JSON.stringify(data));
+            logger.info(JSON.stringify(data));
         });
     }
 }
@@ -309,6 +361,24 @@ function updateUserData(socket, user) {
     //retrieve user data from passport
     if (socket.request.user && socket.request.user.logged_in) {
         var profile = JSON.parse(socket.request.user.profile);
+        /*
+        var photo = null;
+        switch(profile.provider) {
+            case "facebook":
+                console.log(profile);
+                break;
+            case "twitter":
+                photo = profile.photos[0];
+                break;
+            case "github":
+                photo = profile.avatar_url;
+                break;
+            case "dropbox":
+                //not image api provided
+                break;
+        }
+        user.photo = photo;
+        */
         user.name = profile.displayName || profile.username;
         user.userid = socket.request.user._id;
         user.login = true;
@@ -353,7 +423,6 @@ function connection(socket) {
         id: socket.id,
         address: socket.handshake.address,
         'user-agent': socket.handshake.headers['user-agent'],
-        otk: shortId.generate(),
         color: color,
         cursor: null,
         login: false,
@@ -368,24 +437,41 @@ function connection(socket) {
     connectionSocketQueue.push(socket);
     startConnection(socket);
 
-    //when a new client coming or received a client refresh request
-    socket.on('refresh', function (body_) {
+    //received client refresh request
+    socket.on('refresh', function () {
+        emitRefresh(socket);
+    });
+
+    //received client data updated
+    socket.on('update', function (body_) {
         var notename = getNotenameFromSocket(socket);
-        if (!notename) return;
+        if (!notename || !notes[notename]) return;
         if (config.debug)
-            console.log('SERVER received [' + notename + '] data updated: ' + socket.id);
-        if (notes[notename].body != body_) {
-            notes[notename].body = body_;
-            notes[notename].isDirty = true;
+            logger.info('SERVER received [' + notename + '] data updated: ' + socket.id);
+        var note = notes[notename];
+        if (note.body != body_) {
+            note.body = body_;
+            note.hash = md5(body_);
+            note.updatetime = Date.now();
+            note.isDirty = true;
         }
+        var out = {
+            id: socket.id,
+            hash: note.hash,
+            updatetime: note.updatetime
+        };
+        for (var i = 0, l = note.socks.length; i < l; i++) {
+            var sock = note.socks[i];
+            sock.emit('check', out);
+        };
     });
 
     //received user status
     socket.on('user status', function (data) {
         var notename = getNotenameFromSocket(socket);
-        if (!notename) return;
+        if (!notename || !notes[notename]) return;
         if (config.debug)
-            console.log('SERVER received [' + notename + '] user status from [' + socket.id + ']: ' + JSON.stringify(data));
+            logger.info('SERVER received [' + notename + '] user status from [' + socket.id + ']: ' + JSON.stringify(data));
         if (data) {
             var user = users[socket.id];
             user.idle = data.idle;
@@ -394,9 +480,40 @@ function connection(socket) {
         emitUserStatus(socket);
     });
 
+    //received note permission change request
+    socket.on('permission', function (permission) {
+        //need login to do more actions
+        if (socket.request.user && socket.request.user.logged_in) {
+            var notename = getNotenameFromSocket(socket);
+            if (!notename || !notes[notename]) return;
+            var note = notes[notename];
+            //Only owner can change permission
+            if (note.owner == socket.request.user._id) {
+                note.permission = permission;
+                Note.findNote(notename, function (err, _note) {
+                    if (err || !_note) {
+                        return;
+                    }
+                    Note.updatePermission(_note, permission, function (err, _note) {
+                        if (err || !_note) {
+                            return;
+                        }
+                        var out = {
+                            permission: permission
+                        };
+                        for (var i = 0, l = note.socks.length; i < l; i++) {
+                            var sock = note.socks[i];
+                            sock.emit('permission', out);
+                        };
+                    });
+                });
+            }
+        }
+    });
+
     //reveiced when user logout or changed
     socket.on('user changed', function () {
-        console.log('user changed');
+        logger.info('user changed');
         var notename = getNotenameFromSocket(socket);
         if (!notename || !notes[notename]) return;
         updateUserData(socket, notes[notename].users[socket.id]);
@@ -431,11 +548,12 @@ function connection(socket) {
         if (!notename || !notes[notename]) return;
         users[socket.id].cursor = data;
         var out = buildUserOutData(users[socket.id]);
-        notes[notename].socks.forEach(function (sock) {
+        for (var i = 0, l = notes[notename].socks.length; i < l; i++) {
+            var sock = notes[notename].socks[i];
             if (sock != socket) {
                 sock.emit('cursor focus', out);
             }
-        });
+        };
     });
 
     //received cursor activity
@@ -444,11 +562,12 @@ function connection(socket) {
         if (!notename || !notes[notename]) return;
         users[socket.id].cursor = data;
         var out = buildUserOutData(users[socket.id]);
-        notes[notename].socks.forEach(function (sock) {
+        for (var i = 0, l = notes[notename].socks.length; i < l; i++) {
+            var sock = notes[notename].socks[i];
             if (sock != socket) {
                 sock.emit('cursor activity', out);
             }
-        });
+        };
     });
 
     //received cursor blur
@@ -459,13 +578,12 @@ function connection(socket) {
         var out = {
             id: socket.id
         };
-        notes[notename].socks.forEach(function (sock) {
+        for (var i = 0, l = notes[notename].socks.length; i < l; i++) {
+            var sock = notes[notename].socks[i];
             if (sock != socket) {
-                if (sock != socket) {
-                    sock.emit('cursor blur', out);
-                }
+                sock.emit('cursor blur', out);
             }
-        });
+        };
     });
 
     //when a new client disconnect
@@ -477,12 +595,30 @@ function connection(socket) {
     //when received client change data request
     socket.on('change', function (op) {
         var notename = getNotenameFromSocket(socket);
-        if (!notename) return;
+        if (!notename || !notes[notename]) return;
+        var note = notes[notename];
+        switch (note.permission) {
+        case "freely":
+            //not blocking anyone
+            break;
+        case "editable":
+            //only login user can change
+            if (!socket.request.user || !socket.request.user.logged_in)
+                return;
+            break;
+        case "locked":
+            //only owner can change
+            if (note.owner != socket.request.user._id)
+                return;
+            break;
+        }
         op = LZString.decompressFromUTF16(op);
         if (op)
             op = JSON.parse(op);
+        else
+            return;
         if (config.debug)
-            console.log('SERVER received [' + notename + '] data changed: ' + socket.id + ', op:' + JSON.stringify(op));
+            logger.info('SERVER received [' + notename + '] data changed: ' + socket.id + ', op:' + JSON.stringify(op));
         switch (op.origin) {
         case '+input':
         case '+delete':
@@ -499,16 +635,20 @@ function connection(socket) {
         case '+joinLines':
         case '+duplicateLine':
         case '+sortLines':
-            notes[notename].socks.forEach(function (sock) {
-                if (sock != socket) {
-                    if (config.debug)
-                        console.log('SERVER emit sync data out [' + notename + ']: ' + sock.id + ', op:' + JSON.stringify(op));
-                    sock.emit('change', LZString.compressToUTF16(JSON.stringify(op)));
-                }
-            });
+            op.id = socket.id;
+            op.otk = note.otk;
+            op.nextotk = note.otk = shortId.generate();
+            var stringop = JSON.stringify(op);
+            var compressstringop = LZString.compressToUTF16(stringop);
+            for (var i = 0, l = note.socks.length; i < l; i++) {
+                var sock = note.socks[i];
+                if (config.debug)
+                    logger.info('SERVER emit sync data out [' + notename + ']: ' + sock.id + ', op:' + stringop);
+                sock.emit('change', compressstringop);
+            };
             break;
-        default: 
-            console.log('SERVER received uncaught [' + notename + '] data changed: ' + socket.id + ', op:' + JSON.stringify(op));
+        default:
+            logger.info('SERVER received uncaught [' + notename + '] data changed: ' + socket.id + ', op:' + JSON.stringify(op));
         }
     });
 }
diff --git a/lib/response.js b/lib/response.js
index a7dcc023..d3b011bf 100644
--- a/lib/response.js
+++ b/lib/response.js
@@ -6,6 +6,8 @@ var path = require('path');
 var uuid = require('node-uuid');
 var markdownpdf = require("markdown-pdf");
 var LZString = require('lz-string');
+var S = require('string');
+var shortId = require('shortid');
 
 //core
 var config = require("../config.js");
@@ -31,16 +33,20 @@ var response = {
     newNote: newNote,
     showFeatures: showFeatures,
     showNote: showNote,
-    noteActions: noteActions
+    showShareNote: showShareNote,
+    noteActions: noteActions,
+    shareNoteActions: shareNoteActions
 };
 
 function responseError(res, code, detail, msg) {
     res.writeHead(code, {
         'Content-Type': 'text/html'
     });
-    var content = ejs.render(fs.readFileSync(config.errorpath, 'utf8'), {
+    var template = config.errorpath;
+    var content = ejs.render(fs.readFileSync(template, 'utf8'), {
+        title: code + ' ' + detail + ' ' + msg,
         cache: !config.debug,
-        filename: config.errorpath,
+        filename: template,
         code: code,
         detail: detail,
         msg: msg
@@ -49,16 +55,44 @@ function responseError(res, code, detail, msg) {
     res.end();
 }
 
-function responseHackMD(res) {
-    res.writeHead(200, {
-        'Content-Type': 'text/html'
-    });
-    var content = ejs.render(fs.readFileSync(config.hackmdpath, 'utf8'), {
-        cache: !config.debug,
-        filename: config.hackmdpath
+function responseHackMD(res, noteId) {
+    if (noteId != config.featuresnotename) {
+        if (!Note.checkNoteIdValid(noteId)) {
+            responseError(res, "404", "Not Found", "oops.");
+            return;
+        }
+        noteId = LZString.decompressFromBase64(noteId);
+        if (!noteId) {
+            responseError(res, "404", "Not Found", "oops.");
+            return;
+        }
+    }
+    db.readFromDB(noteId, function (err, data) {
+        if (err) {
+            responseError(res, "404", "Not Found", "oops.");
+            return;
+        }
+        var title = data.rows[0].title;
+        var decodedTitle = LZString.decompressFromBase64(title);
+        if (decodedTitle) title = decodedTitle;
+        title = Note.generateWebTitle(title);
+        var template = config.hackmdpath;
+        var options = {
+            cache: !config.debug,
+            filename: template
+        };
+        var compiled = ejs.compile(fs.readFileSync(template, 'utf8'), options);
+        var html = compiled({
+            title: title
+        });
+        var buf = html;
+        res.writeHead(200, {
+            'Content-Type': 'text/html; charset=UTF-8',
+            'Cache-Control': 'private',
+            'Content-Length': buf.length
+        });
+        res.end(buf);
     });
-    res.write(content);
-    res.end();
 }
 
 function newNote(req, res, next) {
@@ -88,10 +122,10 @@ function showFeatures(req, res, next) {
                     responseError(res, "500", "Internal Error", "wtf.");
                     return;
                 }
-                responseHackMD(res);
+                responseHackMD(res, config.featuresnotename);
             });
         } else {
-            responseHackMD(res);
+            responseHackMD(res, config.featuresnotename);
         }
     });
 }
@@ -102,22 +136,105 @@ function showNote(req, res, next) {
         responseError(res, "404", "Not Found", "oops.");
         return;
     }
-    responseHackMD(res);
+    responseHackMD(res, noteId);
 }
 
+function showShareNote(req, res, next) {
+    var shortid = req.params.shortid;
+    if (shortId.isValid(shortid)) {
+        Note.findNote(shortid, function (err, note) {
+            if (err || !note) {
+                responseError(res, "404", "Not Found", "oops.");
+                return;
+            }
+            //increase note viewcount
+            Note.increaseViewCount(note, function (err, note) {
+                if (err || !note) {
+                    responseError(res, "404", "Not Found", "oops.");
+                    return;
+                }
+                db.readFromDB(note.id, function (err, data) {
+                    if (err) {
+                        responseError(res, "404", "Not Found", "oops.");
+                        return;
+                    }
+                    var body = LZString.decompressFromBase64(data.rows[0].content);
+                    var updatetime = data.rows[0].update_time;
+                    var text = S(body).escapeHTML().s;
+                    var title = data.rows[0].title;
+                    var decodedTitle = LZString.decompressFromBase64(title);
+                    if (decodedTitle) title = decodedTitle;
+                    title = Note.generateWebTitle(title);
+                    var template = config.prettypath;
+                    var options = {
+                        cache: !config.debug,
+                        filename: template
+                    };
+                    var compiled = ejs.compile(fs.readFileSync(template, 'utf8'), options);
+                    var origin = "//" + req.headers.host;
+                    var html = compiled({
+                        title: title,
+                        viewcount: note.viewcount,
+                        updatetime: updatetime,
+                        url: origin,
+                        body: text
+                    });
+                    var buf = html;
+                    res.writeHead(200, {
+                        'Content-Type': 'text/html; charset=UTF-8',
+                        'Cache-Control': 'private',
+                        'Content-Length': buf.length
+                    });
+                    res.end(buf);
+                });
+            });
+        });
+    } else {
+        responseError(res, "404", "Not Found", "oops.");
+    }
+}
+
+function actionShare(req, res, noteId) {
+    db.readFromDB(noteId, function (err, data) {
+        if (err) {
+            responseError(res, "404", "Not Found", "oops.");
+            return;
+        }
+        var owner = data.rows[0].owner;
+        var permission = "freely";
+        if (owner && owner != "null") {
+            permission = "editable";
+        }
+        Note.findOrNewNote(noteId, permission, function (err, note) {
+            if (err) {
+                responseError(res, "404", "Not Found", "oops.");
+                return;
+            }
+            res.redirect("/s/" + note.shortid);
+        });
+    });
+}
+
+//pretty api is deprecated
 function actionPretty(req, res, noteId) {
     db.readFromDB(noteId, function (err, data) {
         if (err) {
             responseError(res, "404", "Not Found", "oops.");
             return;
         }
-        var body = data.rows[0].content;
+        var body = LZString.decompressFromBase64(data.rows[0].content);
+        var text = S(body).escapeHTML().s;
+        var title = data.rows[0].title;
+        var decodedTitle = LZString.decompressFromBase64(title);
+        if (decodedTitle) title = decodedTitle;
+        title = Note.generateWebTitle(title);
         var template = config.prettypath;
         var compiled = ejs.compile(fs.readFileSync(template, 'utf8'));
         var origin = "//" + req.headers.host;
         var html = compiled({
+            title: title,
             url: origin,
-            body: body
+            body: text
         });
         var buf = html;
         res.writeHead(200, {
@@ -190,8 +307,9 @@ function noteActions(req, res, next) {
     }
     var action = req.params.action;
     switch (action) {
-    case "pretty":
-        actionPretty(req, res, noteId);
+    case "share":
+    case "pretty": //pretty deprecated
+        actionShare(req, res, noteId);
         break;
     case "download":
         actionDownload(req, res, noteId);
@@ -208,4 +326,25 @@ function noteActions(req, res, next) {
     }
 }
 
+function shareNoteActions(req, res, next) {
+    var action = req.params.action;
+    switch (action) {
+    case "edit":
+        var shortid = req.params.shortid;
+        if (shortId.isValid(shortid)) {
+            Note.findNote(shortid, function (err, note) {
+                if (err || !note) {
+                    responseError(res, "404", "Not Found", "oops.");
+                    return;
+                }
+                if (note.id != config.featuresnotename)
+                    res.redirect('/' + LZString.compressToBase64(note.id));
+                else
+                    res.redirect('/' + note.id);
+            });
+        }
+        break;
+    }
+}
+
 module.exports = response;
\ No newline at end of file
diff --git a/lib/temp.js b/lib/temp.js
index 90d9343f..b635644d 100644
--- a/lib/temp.js
+++ b/lib/temp.js
@@ -4,6 +4,7 @@ var mongoose = require('mongoose');
 
 //core
 var config = require("../config.js");
+var logger = require("./logger.js");
 
 // create a temp model
 var model = mongoose.model('temp', {
@@ -33,13 +34,13 @@ function findTemp(id, callback) {
         id: id
     }, function (err, temp) {
         if (err) {
-            console.log('find temp failed: ' + err);
+            logger.error('find temp failed: ' + err);
             callback(err, null);
         }
         if (!err && temp) {
             callback(null, temp);
         } else {
-            console.log('find temp failed: ' + err);
+            logger.error('find temp failed: ' + err);
             callback(err, null);
         };
     });
@@ -53,10 +54,10 @@ function newTemp(id, data, callback) {
     });
     temp.save(function (err) {
         if (err) {
-            console.log('new temp failed: ' + err);
+            logger.error('new temp failed: ' + err);
             callback(err, null);
         } else {
-            console.log("new temp success: " + temp.id);
+            logger.info("new temp success: " + temp.id);
             callback(null, temp);
         };
     });
@@ -67,14 +68,14 @@ function removeTemp(id, callback) {
         if(!err && temp) {
             temp.remove(function(err) {
                 if(err) {
-                    console.log('remove temp failed: ' + err);
+                    logger.error('remove temp failed: ' + err);
                     callback(err, null);
                 } else {
                     callback(null, null);
                 }
             });
         } else {
-            console.log('remove temp failed: ' + err);
+            logger.error('remove temp failed: ' + err);
             callback(err, null);
         }
     });
diff --git a/lib/user.js b/lib/user.js
index 11064506..f89f7def 100644
--- a/lib/user.js
+++ b/lib/user.js
@@ -4,6 +4,7 @@ var mongoose = require('mongoose');
 
 //core
 var config = require("../config.js");
+var logger = require("./logger.js");
 
 // create a user model
 var model = mongoose.model('user', {
@@ -34,13 +35,13 @@ function findUser(id, callback) {
         id: id
     }, function (err, user) {
         if (err) {
-            console.log('find user failed: ' + err);
+            logger.error('find user failed: ' + err);
             callback(err, null);
         }
         if (!err && user) {
             callback(null, user);
         } else {
-            console.log('find user failed: ' + err);
+            logger.error('find user failed: ' + err);
             callback(err, null);
         };
     });
@@ -54,10 +55,10 @@ function newUser(id, profile, callback) {
     });
     user.save(function (err) {
         if (err) {
-            console.log('new user failed: ' + err);
+            logger.error('new user failed: ' + err);
             callback(err, null);
         } else {
-            console.log("new user success: " + user.id);
+            logger.info("new user success: " + user.id);
             callback(null, user);
         };
     });
@@ -68,7 +69,7 @@ function findOrNewUser(id, profile, callback) {
         if(err || !user) {
             newUser(id, profile, function(err, user) {
                 if(err) {
-                    console.log('find or new user failed: ' + err);
+                    logger.error('find or new user failed: ' + err);
                     callback(err, null);
                 } else {
                     callback(null, user);
diff --git a/logs/.keep b/logs/.keep
new file mode 100644
index 00000000..e69de29b
--- /dev/null
+++ b/logs/.keep
diff --git a/package.json b/package.json
index a0f80b59..0b9fe41e 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "hackmd",
-  "version": "0.2.9",
+  "version": "0.3.1",
   "description": "Realtime collaborative markdown notes on all platforms.",
   "main": "app.js",
   "author": "jackycute",
@@ -8,6 +8,7 @@
   "license": "MIT",
   "dependencies": {
     "async": "^0.9.0",
+    "blueimp-md5": "^1.1.0",
     "body-parser": "^1.12.3",
     "chance": "^0.7.5",
     "cheerio": "^0.19.0",
@@ -27,6 +28,7 @@
     "markdown-pdf": "^5.2.0",
     "marked": "^0.3.3",
     "method-override": "^2.3.2",
+    "moment": "^2.10.3",
     "mongoose": "^4.0.2",
     "morgan": "^1.5.3",
     "node-uuid": "^1.4.3",
@@ -38,8 +40,9 @@
     "passport.socketio": "^3.5.1",
     "pg": "4.x",
     "randomcolor": "^0.2.0",
-    "shortid": "2.1.3",
+    "shortid": "2.2.2",
     "socket.io": "1.3.5",
+    "string": "^3.2.0",
     "toobusy-js": "^0.4.1",
     "winston": "^1.0.0"
   },
diff --git a/processes.json b/processes.json
new file mode 100644
index 00000000..7f874049
--- /dev/null
+++ b/processes.json
@@ -0,0 +1,19 @@
+{
+    "apps": [{
+        "name": "hackmd",
+        "script": "app.js",
+        "exec_mode": "fork",
+        "instances": 1,
+        "error_file": "./logs/hackmd-err.log",
+        "out_file": "./logs/hackmd-out.log",
+        "pid_file": "./hackmd.pid",
+        "env": {
+            "NODE_ENV": "production",
+            "DATABASE_URL": "change this",
+            "MONGOLAB_URI": "change this",
+            "PORT": "80",
+            "SSLPORT": "443",
+            "DOMAIN": "change this"
+        }
+    }]
+}
\ No newline at end of file
diff --git a/public/css/cover.css b/public/css/cover.css
index 30d54d34..b5d82e01 100644
--- a/public/css/cover.css
+++ b/public/css/cover.css
@@ -223,10 +223,21 @@ input {
     border-radius: 5px;
     color: black;
     text-shadow: none;
+    min-height: 134px;
+    display: table;
+    min-width: 100%;
+}
+.list li .item .content {
+    display: table-cell;
+    vertical-align: middle;
 }
-.list li .item .tags {
+.list li .item .content .tags {
     line-height: 25px;
 }
+.list li .item .content .tags span {
+    display: inline-block;
+    line-height: 15px;
+}
 .form-inline {
     padding: 0 10px;
 }
@@ -246,6 +257,10 @@ input {
 .ui-history-close:hover {
     opacity: 1;
 }
+.ui-or {
+    margin-top: 5px;
+    margin-bottom: 5px;
+}
 
 .modal-title {
     text-align: left;
diff --git a/public/css/extra.css b/public/css/extra.css
index 8b7eb884..6d9d137f 100644
--- a/public/css/extra.css
+++ b/public/css/extra.css
@@ -13,15 +13,21 @@
 }
 .vimeo .icon,
 .youtube .icon {
-    opacity: 0.5;
+    opacity: 0.3;
     display: table-cell;
     vertical-align: middle;
     height: inherit;
     margin: 0 auto;
+    color: white;
+    -webkit-transition: opacity 0.2s; /* Safari */
+    transition: opacity 0.2s;
+    
 }
 .vimeo:hover .icon,
 .youtube:hover .icon {
     opacity: 0.6;
+    -webkit-transition: opacity 0.2s; /* Safari */
+    transition: opacity 0.2s;
 }
 h1:hover .header-link,
 h2:hover .header-link,
@@ -44,4 +50,168 @@ h6:hover .header-link {
     -moz-transition: opacity 0.2s ease-in-out 0.1s;
     -o-transition: opacity 0.2s ease-in-out 0.1s;
     transition: opacity 0.2s ease-in-out 0.1s;
+}
+
+.ui-infobar {
+    max-width: 758px;
+    margin-top: 25px;
+    margin-bottom: -25px;
+    color: #777;
+}
+
+.ui-toc {
+    position: fixed;
+    bottom: 20px;
+    z-index: 10000;
+}
+
+.ui-toc-label {
+    opacity: 0.3;
+    background-color: #ccc;
+    border: none;
+    -webkit-transition: opacity 0.2s; /* Safari */
+    transition: opacity 0.2s;
+}
+
+.ui-toc .open .ui-toc-label {
+    opacity: 1;
+    color: white;
+    -webkit-transition: opacity 0.2s; /* Safari */
+    transition: opacity 0.2s;
+}
+
+.ui-toc-label:focus {
+    opacity: 0.3;
+    background-color: #ccc;
+    color: black;
+}
+
+.ui-toc-label:hover {
+    opacity: 1;
+    background-color: #ccc;
+    -webkit-transition: opacity 0.2s; /* Safari */
+    transition: opacity 0.2s;
+}
+
+.ui-toc-dropdown {
+    margin-top: 20px;
+    margin-bottom: 20px;
+    padding-left: 10px;
+    padding-right: 10px;
+    max-width: 45vw;
+    width: 25vw;
+    max-height: 65vh;
+    overflow: auto;
+}
+
+.ui-toc-dropdown a {
+    overflow: hidden;
+    text-overflow: ellipsis;
+    white-space: pre;
+}
+
+.ui-toc-dropdown .nav>li>a {
+    display: block;
+    padding: 4px 20px;
+    font-size: 13px;
+    font-weight: 500;
+    color: #767676;
+}
+
+.ui-toc-dropdown .nav>li>a:focus,.ui-toc-dropdown .nav>li>a:hover {
+    padding-left: 19px;
+    color: black;
+    text-decoration: none;
+    background-color: transparent;
+    border-left: 1px solid black;
+}
+
+.ui-toc-dropdown .nav>.active:focus>a,.ui-toc-dropdown .nav>.active:hover>a,.ui-toc-dropdown .nav>.active>a {
+    padding-left: 18px;
+    font-weight: 700;
+    color: black;
+    background-color: transparent;
+    border-left: 2px solid black;
+}
+
+.ui-toc-dropdown .nav .nav {
+    display: none;
+    padding-bottom: 10px;
+}
+
+.ui-toc-dropdown .nav>.active>ul {
+    display: block;
+}
+
+.ui-toc-dropdown .nav .nav>li>a {
+    padding-top: 1px;
+    padding-bottom: 1px;
+    padding-left: 30px;
+    font-size: 12px;
+    font-weight: 400;
+}
+
+.ui-toc-dropdown .nav .nav>li>ul>li>a {
+    padding-top: 1px;
+    padding-bottom: 1px;
+    padding-left: 40px;
+    font-size: 12px;
+    font-weight: 400;
+}
+
+.ui-toc-dropdown .nav .nav>li>a:focus,.ui-toc-dropdown .nav .nav>li>a:hover {
+    padding-left: 29px;
+}
+
+.ui-toc-dropdown .nav .nav>li>ul>li>a:focus,.ui-toc-dropdown .nav .nav>li>ul>li>a:hover {
+    padding-left: 39px;
+}
+
+.ui-toc-dropdown .nav .nav>.active:focus>a,.ui-toc-dropdown .nav .nav>.active:hover>a,.ui-toc-dropdown .nav .nav>.active>a {
+    padding-left: 28px;
+    font-weight: 500;
+}
+
+.ui-toc-dropdown .nav .nav>.active>.nav>.active:focus>a,.ui-toc-dropdown .nav .nav>.active>.nav>.active:hover>a,.ui-toc-dropdown .nav .nav>.active>.nav>.active>a {
+    padding-left: 38px;
+    font-weight: 500;
+}
+
+.ui-affix-toc {
+    position: fixed;
+    top: 0;
+    max-width: 15vw;
+    max-height: 70vh;
+    overflow: auto;
+}
+
+.back-to-top, .go-to-bottom {
+    display: block;
+    padding: 4px 10px;
+    margin-top: 10px;
+    margin-left: 10px;
+    font-size: 12px;
+    font-weight: 500;
+    color: #999;
+}
+
+.back-to-top:hover, .back-to-top:focus, .go-to-bottom:hover, .go-to-bottom:focus {
+    color: #563d7c;
+    text-decoration: none;
+}
+
+.go-to-bottom {
+    margin-top: 0;
+}
+
+small span {
+    line-height: 22px;
+}
+
+small .dropdown {
+    display: inline-block;
+}
+
+small .dropdown a:focus, small .dropdown a:hover {
+    text-decoration: none;
 }
\ No newline at end of file
diff --git a/public/css/index.css b/public/css/index.css
index f1f303ed..e1d5745f 100644
--- a/public/css/index.css
+++ b/public/css/index.css
@@ -177,11 +177,11 @@ div[contenteditable]:empty:not(:focus):before{
     content:attr(data-ph);
     color: gray;
 }
-.dropdown-menu {
+.dropdown-menu.list {
     max-height: 80vh;
     overflow: auto;
 }
-.dropdown-menu::-webkit-scrollbar { 
+.dropdown-menu.list::-webkit-scrollbar { 
     display: none; 
 }
 .dropdown-menu .emoji {
@@ -201,6 +201,26 @@ div[contenteditable]:empty:not(:focus):before{
     user-select: none;
 }
 
+.btn-file {
+    position: relative;
+    overflow: hidden;
+}
+.btn-file input[type=file] {
+    position: absolute;
+    top: 0;
+    right: 0;
+    min-width: 100%;
+    min-height: 100%;
+    font-size: 100px;
+    text-align: right;
+    filter: alpha(opacity=0);
+    opacity: 0;
+    outline: none;
+    background: white;
+    cursor: inherit;
+    display: block;
+}
+
 .cm-trailing-space-a:before,
 .cm-trailing-space-b:before,
 .cm-trailing-space-new-line:before {
diff --git a/public/css/site.css b/public/css/site.css
index eed8b950..29426b15 100644
--- a/public/css/site.css
+++ b/public/css/site.css
@@ -13,4 +13,10 @@ body {
 }
 ::-moz-focus-inner {
     border: 0 !important;
+}
+
+/* manual fix for bootstrap issue 14040, there is an unnecessary padding-right on modal open */
+body.modal-open {
+    overflow-y: auto;
+    padding-right: 0 !important;
 }
\ No newline at end of file
diff --git a/public/index.html b/public/index.html
index 2eb76ddc..c314ebd9 100644
--- a/public/index.html
+++ b/public/index.html
@@ -52,7 +52,7 @@
                         <p class="lead">
                             Realtime collaborative markdown notes on all platforms.
                         </p>
-                        <a type="button" class="btn btn-lg btn-success ui-signin" data-toggle="modal" data-target=".bs-example-modal-sm" style="display:none;">Sign In</a>
+                        <a type="button" class="btn btn-lg btn-success ui-signin" data-toggle="modal" data-target=".signin-modal" style="display:none;">Sign In</a>
                         <div class="ui-or" style="display:none;">Or</div>
                         <p class="lead">
                             <a href="/new" class="btn btn-lg btn-default">Start new note</a>
@@ -66,7 +66,7 @@
                 <div id="history" class="section" style="display:none;">
                     <div class="ui-signin">
                         <h4>
-                            <a type="button" class="btn btn-success" data-toggle="modal" data-target=".bs-example-modal-sm">Sign In</a> to get own history!
+                            <a type="button" class="btn btn-success" data-toggle="modal" data-target=".signin-modal">Sign In</a> to get own history!
                         </h4>
                         <p>Below are history from browser</p>
                     </div>
@@ -98,7 +98,7 @@
                             <span class="btn btn-default btn-file ui-open-history" title="Import history">
                                 <i class="fa fa-folder-open-o"></i><input type="file" />
                             </span>
-                        <a href="#" class="btn btn-default ui-clear-history" title="Clear history"><i class="fa fa-trash-o"></i></a>
+                        <a href="#" class="btn btn-default ui-clear-history" title="Clear history" data-toggle="modal" data-target=".delete-modal"><i class="fa fa-trash-o"></i></a>
                         </span>
                         <a href="#" class="btn btn-default ui-refresh-history" title="Refresh history"><i class="fa fa-refresh"></i></a>
                     </form>
@@ -143,9 +143,7 @@
                 <div class="mastfoot">
                     <div class="inner">
                         <h6>
-                            <div class="fb-like" data-href="https://www.facebook.com/TakeHackMD" data-width="80" data-layout="button_count" data-action="like" data-show-faces="true" data-share="false" style="vertical-align:middle;"></div>
-                            &nbsp;
-                            <iframe src="//ghbtns.com/github-btn.html?user=jackycute&repo=hackmd&type=star&count=true" frameborder="0" scrolling="0" width="80px" height="20px" style="vertical-align:middle;"></iframe>
+                            <iframe src="//ghbtns.com/github-btn.html?user=jackycute&repo=hackmd&type=star&count=true" frameborder="0" scrolling="0" width="85px" height="20px" style="vertical-align:middle;"></iframe>
                         </h6>
                         <p>&copy; 2015 <a href="https://www.facebook.com/TakeHackMD" target="_blank"><i class="fa fa-facebook-square"></i> HackMD</a> by <a href="https://github.com/jackycute" target="_blank"><i class="fa fa-github-square"></i> jackycute</a>
                         </p>
@@ -156,7 +154,7 @@
     </div>
 
     <!-- signin modal -->
-    <div class="modal fade bs-example-modal-sm" tabindex="-1" role="dialog" aria-labelledby="mySmallModalLabel" aria-hidden="true">
+    <div class="modal fade signin-modal" tabindex="-1" role="dialog" aria-labelledby="mySmallModalLabel" aria-hidden="true">
         <div class="modal-dialog modal-sm">
             <div class="modal-content">
                 <div class="modal-header">
@@ -181,12 +179,30 @@
             </div>
         </div>
     </div>
-    <div id="fb-root"></div>
+    <!-- delete modal -->
+    <div class="modal fade delete-modal" tabindex="-1" role="dialog" aria-labelledby="myModalLabel" aria-hidden="true">
+        <div class="modal-dialog modal-sm">
+            <div class="modal-content">
+                <div class="modal-header">
+                    <button type="button" class="close" data-dismiss="modal" aria-label="Close"><span aria-hidden="true">&times;</span>
+                    </button>
+                    <h4 class="modal-title" id="myModalLabel">Are you sure?</h4>
+                </div>
+                <div class="modal-body" style="color:black;">
+                    <h5 class="ui-delete-modal-msg"></h5>
+                    <strong class="ui-delete-modal-item"></strong>
+                </div>
+                <div class="modal-footer">
+                    <button type="button" class="btn btn-default" data-dismiss="modal">Cancel</button>
+                    <button type="button" class="btn btn-danger ui-delete-modal-confirm">Yes, do it!</button>
+                </div>
+            </div>
+        </div>
+    </div>
 
     <!-- Bootstrap core JavaScript
     ================================================== -->
     <!-- Placed at the end of the document so the pages load faster -->
-    <script src="/js/fb.js" async defer></script>
     <script src="//code.jquery.com/jquery-1.11.3.min.js" defer></script>
     <script src="/vendor/greensock-js/TweenMax.min.js" defer></script>
     <script src="/vendor/greensock-js/jquery.gsap.min.js" defer></script>
diff --git a/public/js/cover.js b/public/js/cover.js
index 322768bf..49fcddeb 100644
--- a/public/js/cover.js
+++ b/public/js/cover.js
@@ -4,12 +4,17 @@ var options = {
             <span class="id" style="display:none;"></span>\
             <a href="#">\
                 <div class="item">\
-                    <div class="ui-history-close fa fa-close fa-fw"></div>\
-                    <h4 class="text"></h4>\
-                    <p><i class="fromNow"><i class="fa fa-clock-o"></i></i>\
-                    <br>\
-                    <i class="timestamp" style="display:none;"></i><i class="time"></i></p>\
-                    <p class="tags"></p>\
+                    <div class="ui-history-close fa fa-close fa-fw" data-toggle="modal" data-target=".delete-modal"></div>\
+                    <div class="content">\
+                        <h4 class="text"></h4>\
+                        <p>\
+                            <i><i class="fa fa-clock-o"></i> visit </i><i class="fromNow"></i>\
+                            <br>\
+                            <i class="timestamp" style="display:none;"></i>\
+                            <i class="time"></i>\
+                        </p>\
+                        <p class="tags"></p>\
+                    </div>\
                 </div>\
             </a>\
            </li>'
@@ -114,16 +119,53 @@ function parseHistoryCallback(list, notehistory) {
     $(".ui-history-close").click(function (e) {
         e.preventDefault();
         var id = $(this).closest("a").siblings("span").html();
+        var value = list.get('id', id)[0].values();
+        $('.ui-delete-modal-msg').text('Do you really want to delete below history?');
+        $('.ui-delete-modal-item').html('<i class="fa fa-file-text"></i> ' + value.text + '<br><i class="fa fa-clock-o"></i> ' + value.time);
+        clearHistory = false;
+        deleteId = id;
+    });
+    buildTagsFilter(filtertags);
+}
+
+//auto update item fromNow every minutes
+setInterval(updateItemFromNow, 60000);
+
+function updateItemFromNow() {
+    var items = $('.item').toArray();
+    for (var i = 0; i < items.length; i++) {
+        var item = $(items[i]);
+        var timestamp = parseInt(item.find('.timestamp').text());
+        item.find('.fromNow').text(moment(timestamp).fromNow());
+    }
+}
+
+var clearHistory = false;
+var deleteId = null;
+
+function deleteHistory() {
+    if (clearHistory) {
+        saveHistory([]);
+        historyList.clear();
+        checkHistoryList();
+    } else {
+        if (!deleteId) return;
         getHistory(function (notehistory) {
-            var newnotehistory = removeHistory(id, notehistory);
+            var newnotehistory = removeHistory(deleteId, notehistory);
             saveHistory(newnotehistory);
         });
-        list.remove('id', id);
+        historyList.remove('id', deleteId);
         checkHistoryList();
-    });
-    buildTagsFilter(filtertags);
+    }
+    $('.delete-modal').modal('hide');
+    clearHistory = false;
+    deleteId = null;
 }
 
+$(".ui-delete-modal-confirm").click(function () {
+    deleteHistory();
+});
+
 $(".ui-import-from-browser").click(function () {
     saveStorageHistoryToServer(function () {
         parseStorageToHistory(historyList, parseHistoryCallback);
@@ -160,9 +202,10 @@ $(".ui-open-history").bind("change", function (e) {
 });
 
 $(".ui-clear-history").click(function () {
-    saveHistory([]);
-    historyList.clear();
-    checkHistoryList();
+    $('.ui-delete-modal-msg').text('Do you really want to clear all history?');
+    $('.ui-delete-modal-item').html('There is no turning back.');
+    clearHistory = true;
+    deleteId = null;
 });
 
 $(".ui-refresh-history").click(function () {
@@ -230,6 +273,67 @@ var template = Handlebars.compile(source);
 var context = {
     release: [
         {
+            version: "0.3.1",
+            tag: "clearsky",
+            date: moment("201506301600", 'YYYYMMDDhhmm').fromNow(),
+            detail: [
+                {
+                    title: "Features",
+                    item: [
+                            "+ Added auto table of content",
+                            "+ Added basic permission control",
+                            "+ Added view count in share note"
+                        ]
+                    },
+                {
+                    title: "Enhancements",
+                    item: [
+                            "* Toolbar now will hide in single view",
+                            "* History time now will auto update",
+                            "* Smooth scroll on anchor changed",
+                            "* Updated video style"
+                        ]
+                    },
+                {
+                    title: "Fixes",
+                    item: [
+                            "* Note might not clear when all users disconnect",
+                            "* Blockquote tag not parsed properly",
+                            "* History style not correct"
+                        ]
+                    }
+                ]
+            },
+        {
+            version: "0.3.0",
+            tag: "sunrise",
+            date: moment("201506152400", 'YYYYMMDDhhmm').fromNow(),
+            detail: [
+                {
+                    title: "Enhancements",
+                    item: [
+                            "* Used short url in share notes",
+                            "* Added upload image button on toolbar",
+                            "* Share notes are now SEO and mobile friendly",
+                            "* Updated code block style",
+                            "* Newline now will cause line breaks",
+                            "* Image now will link out",
+                            "* Used otk to avoid race condition",
+                            "* Used hash to avoid data inconsistency",
+                            "* Optimized server realtime script"
+                        ]
+                    },
+                {
+                    title: "Fixes",
+                    item: [
+                            "* Composition input might lost or duplicated when other input involved",
+                            "* Note title might not save properly",
+                            "* Todo list not render properly"
+                        ]
+                    }
+                ]
+            },
+        {
             version: "0.2.9",
             tag: "wildfire",
             date: moment("201505301400", 'YYYYMMDDhhmm').fromNow(),
diff --git a/public/js/extra.js b/public/js/extra.js
index 495c5677..f6d47647 100644
--- a/public/js/extra.js
+++ b/public/js/extra.js
@@ -1,43 +1,75 @@
+//auto update last change
+var lastchangetime = null;
+var lastchangeui = null;
+
+function updateLastChange() {
+    if (lastchangetime && lastchangeui) {
+        lastchangeui.html('&nbsp;<i class="fa fa-clock-o"></i> change ' + moment(lastchangetime).fromNow());
+        lastchangeui.attr('title', moment(lastchangetime).format('llll'));
+    }
+}
+setInterval(updateLastChange, 60000);
+
 //get title
 function getTitle(view) {
     var h1s = view.find("h1");
     var title = "";
-    if (h1s.length > 0)  {
+    if (h1s.length > 0) {
         title = h1s.first().text();
     } else {
         title = null;
     }
     return title;
 }
+
 //render title
 function renderTitle(view) {
     var title = getTitle(view);
-    if (title)  {
+    if (title) {
         title += ' - HackMD';
     } else {
         title = 'HackMD - Collaborative notes';
     }
     return title;
 }
+
 //render filename
 function renderFilename(view) {
     var filename = getTitle(view);
-    if (!filename)  {
+    if (!filename) {
         filename = 'Untitled';
     }
     return filename;
 }
 
+function slugifyWithUTF8(text) {
+    var newText = S(text.toLowerCase()).trim().stripTags().dasherize().s;
+    newText = newText.replace(/([\!\"\#\$\%\&\'\(\)\*\+\,\.\/\:\;\<\=\>\?\@\[\\\]\^\`\{\|\}\~])/g, '');
+    return newText;
+}
+
 var viewAjaxCallback = null;
 
+//regex for blockquote
+var spaceregex = /\s*/;
+var notinhtmltagregex = /(?![^<]*>|[^<>]*<\/)/;
+var coloregex = /\[color=([#|\(|\)|\s|\,|\w]*?)\]/;
+coloregex = new RegExp(coloregex.source + notinhtmltagregex.source, "g");
+var nameregex = /\[name=(.*?)\]/;
+var timeregex = /\[time=([:|,|+|-|\(|\)|\s|\w]*?)\]/;
+var nameandtimeregex = new RegExp(nameregex.source + spaceregex.source + timeregex.source + notinhtmltagregex.source, "g");
+nameregex = new RegExp(nameregex.source + notinhtmltagregex.source, "g");
+timeregex = new RegExp(timeregex.source + notinhtmltagregex.source, "g");
+
 //dynamic event or object binding here
 function finishView(view) {
     //youtube
-    view.find(".youtube").click(function () {
-        imgPlayiframe(this, '//www.youtube.com/embed/');
-    });
+    view.find(".youtube.raw").removeClass("raw")
+        .click(function () {
+            imgPlayiframe(this, '//www.youtube.com/embed/');
+        });
     //vimeo
-    view.find(".vimeo")
+    view.find(".vimeo.raw").removeClass("raw")
         .click(function () {
             imgPlayiframe(this, '//player.vimeo.com/video/');
         })
@@ -54,35 +86,32 @@ function finishView(view) {
             });
         });
     //gist
-    view.find("code[data-gist-id]").each(function(key, value) {
-        if($(value).children().length == 0)
+    view.find("code[data-gist-id]").each(function (key, value) {
+        if ($(value).children().length == 0)
             $(value).gist(viewAjaxCallback);
     });
     //emojify
     emojify.run(view[0]);
     //mathjax
-    var mathjaxdivs = view.find('.mathjax').toArray();
+    var mathjaxdivs = view.find('.mathjax.raw').removeClass("raw").toArray();
     try {
         for (var i = 0; i < mathjaxdivs.length; i++) {
             MathJax.Hub.Queue(["Typeset", MathJax.Hub, mathjaxdivs[i].innerHTML]);
             MathJax.Hub.Queue(viewAjaxCallback);
-            $(mathjaxdivs[i]).removeClass("mathjax");
         }
-    } catch(err) {
-    }
+    } catch (err) {}
     //sequence diagram
-    var sequence = view.find(".sequence-diagram");
+    var sequence = view.find(".sequence-diagram.raw").removeClass("raw");
     try {
         sequence.sequenceDiagram({
             theme: 'simple'
         });
         sequence.parent().parent().replaceWith(sequence);
-        sequence.removeClass("sequence-diagram");
-    } catch(err) {
+    } catch (err) {
         console.error(err);
     }
     //flowchart
-    var flow = view.find(".flow-chart");
+    var flow = view.find(".flow-chart.raw").removeClass("raw");
     flow.each(function (key, value) {
         try {
             var chart = flowchart.parse($(value).text());
@@ -94,26 +123,41 @@ function finishView(view) {
                 'font-family': "'Andale Mono', monospace"
             });
             $(value).parent().parent().replaceWith(value);
-            $(value).removeClass("flow-chart");
-        } catch(err) {
+        } catch (err) {
             console.error(err);
         }
     });
+    //image href new window(emoji not included)
+    var images = view.find("p > img[src]:not([class])");
+    images.each(function (key, value) {
+        var src = $(value).attr('src');
+        var a = $('<a>');
+        if (src) {
+            a.attr('href', src);
+            a.attr('target', "_blank");
+        }
+        a.html($(value).clone());
+        $(value).replaceWith(a);
+    });
+    //blockquote
+    var blockquote = view.find("blockquote.raw").removeClass("raw");
+    var blockquote_p = blockquote.find("p");
+    blockquote_p.each(function (key, value) {
+        var html = $(value).html();
+        html = html.replace(coloregex, '<span class="color" data-color="$1"></span>');
+        html = html.replace(nameandtimeregex, '<small><i class="fa fa-user"></i> $1 <i class="fa fa-clock-o"></i> $2</small>');
+        html = html.replace(nameregex, '<small><i class="fa fa-user"></i> $1</small>');
+        html = html.replace(timeregex, '<small><i class="fa fa-clock-o"></i> $1</small>');
+        $(value).html(html);
+    });
+    var blockquote_color = blockquote.find(".color");
+    blockquote_color.each(function (key, value) {
+        $(value).closest("blockquote").css('border-left-color', $(value).attr('data-color'));
+    });
     //render title
     document.title = renderTitle(view);
 }
 
-//regex for blockquote
-var spaceregex = /\s*/;
-var notinhtmltagregex = /(?![^<]*>|[^<>]*<\/)/;
-var coloregex = /\[color=([#|\(|\)|\s|\,|\w]*)\]/;
-coloregex = new RegExp(coloregex.source + notinhtmltagregex.source, "g");
-var nameregex = /\[name=([-|_|\s|\w]*)\]/;
-var timeregex = /\[time=([:|,|+|-|\(|\)|\s|\w]*)\]/;
-var nameandtimeregex = new RegExp(nameregex.source + spaceregex.source + timeregex.source + notinhtmltagregex.source, "g");
-nameregex = new RegExp(nameregex.source + notinhtmltagregex.source, "g");
-timeregex = new RegExp(timeregex.source + notinhtmltagregex.source, "g");
-
 //only static transform should be here
 function postProcess(code) {
     var result = $('<div>' + code + '</div>');
@@ -125,30 +169,105 @@ function postProcess(code) {
         return "<noiframe>" + $(this).html() + "</noiframe>"
     });
     //todo list
-    var lis = result[0].getElementsByTagName('li');
+    var lis = result.find('li.raw').removeClass("raw").sortByDepth().toArray();
     for (var i = 0; i < lis.length; i++) {
-        var html = lis[i].innerHTML;
-        if (/^\s*\[[x ]\]\s+/.test(html)) {
-            lis[i].innerHTML = html.replace(/^\s*\[ \]\s*/, '<input type="checkbox" class="task-list-item-checkbox" disabled>')
-                .replace(/^\s*\[x\]\s*/, '<input type="checkbox" class="task-list-item-checkbox" checked disabled>');
+        var li = lis[i];
+        var html = $(li).clone()[0].innerHTML;
+        var p = $(li).children('p');
+        if (p.length == 1) {
+            html = p.html();
+            li = p[0];
+        }
+        if (/^\s*\[[x ]\]\s*/.test(html)) {
+            li.innerHTML = html.replace(/^\s*\[ \]\s*/, '<input type="checkbox" class="task-list-item-checkbox" disabled><label></label>')
+                .replace(/^\s*\[x\]\s*/, '<input type="checkbox" class="task-list-item-checkbox" checked disabled><label></label>');
             lis[i].setAttribute('class', 'task-list-item');
         }
     }
-    //blockquote
-    var blockquote = result.find("blockquote");
-    blockquote.each(function (key, value) {
-        var html = $(value).html();
-        html = html.replace(coloregex, '<span class="color" data-color="$1"></span>');
-        html = html.replace(nameandtimeregex, '<small><i class="fa fa-user"></i> $1 <i class="fa fa-clock-o"></i> $2</small>');
-        html = html.replace(nameregex, '<small><i class="fa fa-user"></i> $1</small>');
-        html = html.replace(timeregex, '<small><i class="fa fa-clock-o"></i> $1</small>');
-        $(value).html(html);
+    return result;
+}
+
+//jQuery sortByDepth
+$.fn.sortByDepth = function () {
+    var ar = this.map(function () {
+            return {
+                length: $(this).parents().length,
+                elt: this
+            }
+        }).get(),
+        result = [],
+        i = ar.length;
+    ar.sort(function (a, b) {
+        return a.length - b.length;
     });
-    var blockquotecolor = result.find("blockquote .color");
-    blockquotecolor.each(function (key, value) {
-        $(value).closest("blockquote").css('border-left-color', $(value).attr('data-color'));
+    while (i--) {
+        result.push(ar[i].elt);
+    }
+    return $(result);
+};
+
+//remove hash
+function removeHash() {
+    history.pushState("", document.title, window.location.pathname + window.location.search);
+}
+
+//toc
+function generateToc(id) {
+    var target = $('#' + id);
+    target.html('');
+    new Toc('doc', {
+        'level': 3,
+        'top': -1,
+        'class': 'toc',
+        'targetId': id
     });
-    return result;
+    if(target.text() == 'undefined')
+        target.html('');
+    var backtotop = $('<a class="back-to-top" href="#">Back to top</a>');
+    var gotobottom = $('<a class="go-to-bottom" href="#">Go to bottom</a>');
+    backtotop.click(function (e) {
+        e.preventDefault();
+        e.stopPropagation();
+        if (scrollToTop)
+            scrollToTop();
+        removeHash();
+    });
+    gotobottom.click(function (e) {
+        e.preventDefault();
+        e.stopPropagation();
+        if (scrollToBottom)
+            scrollToBottom();
+        removeHash();
+    });
+    target.append(backtotop).append(gotobottom);
+}
+
+//smooth all hash trigger scrolling
+function smoothHashScroll() {
+    var hashElements = $("a[href^='#']:not([smoothhashscroll])").toArray();
+    for (var i = 0; i < hashElements.length; i++) {
+        var element = hashElements[i];
+        var $element = $(element);
+        var hash = element.hash;
+        if (hash) {
+            $element.on('click', function (e) {
+                // store hash
+                var hash = this.hash;
+                if ($(hash).length <= 0) return;
+                // prevent default anchor click behavior
+                e.preventDefault();
+                // animate
+                $('html, body').animate({
+                    scrollTop: $(hash).offset().top
+                }, 100, "linear", function () {
+                    // when done, add hash to url
+                    // (default click behaviour)
+                    window.location.hash = hash;
+                });
+            });
+            $element.attr('smoothhashscroll', '');
+        }
+    }
 }
 
 function setSizebyAttr(element, target) {
@@ -168,10 +287,10 @@ function imgPlayiframe(element, src) {
 
 var anchorForId = function (id) {
     var anchor = document.createElement("a");
-    anchor.className = "header-link";
+    anchor.className = "header-link hidden-xs";
     anchor.href = "#" + id;
-    anchor.innerHTML = "<span class=\"sr-only\">Permalink</span><i class=\"fa fa-link\"></i>";
-    anchor.title = "Permalink";
+    anchor.innerHTML = "<span class=\"sr-only\"></span><i class=\"fa fa-link\"></i>";
+    anchor.title = id;
     return anchor;
 };
 
@@ -179,12 +298,14 @@ var linkifyAnchors = function (level, containingElement) {
     var headers = containingElement.getElementsByTagName("h" + level);
     for (var h = 0; h < headers.length; h++) {
         var header = headers[h];
-
-        if (typeof header.id == "undefined" || header.id == "") {
-            var id = S(header.innerHTML.toLowerCase()).trim().stripTags().dasherize().s;
-            header.id = encodeURIComponent(id);
+        if (header.getElementsByClassName("header-link").length == 0) {
+            if (typeof header.id == "undefined" || header.id == "") {
+                //to escape characters not allow in css and humanize
+                var id = slugifyWithUTF8(header.innerHTML);
+                header.id = id;
+            }
+            header.appendChild(anchorForId(header.id));
         }
-        header.appendChild(anchorForId(header.id));
     }
 };
 
@@ -207,10 +328,10 @@ function scrollToHash() {
 function highlightRender(code, lang) {
     if (!lang || /no(-?)highlight|plain|text/.test(lang))
         return;
-    if(lang == 'sequence') {
-        return '<div class="sequence-diagram">' + code + '</div>';
-    } else if(lang == 'flow') {
-        return '<div class="flow-chart">' + code + '</div>';
+    if (lang == 'sequence') {
+        return '<div class="sequence-diagram raw">' + code + '</div>';
+    } else if (lang == 'flow') {
+        return '<div class="flow-chart raw">' + code + '</div>';
     }
     var reallang = lang.replace('=', '');
     var languages = hljs.listLanguages();
@@ -238,10 +359,56 @@ emojify.setConfig({
 
 var md = new Remarkable('full', {
     html: true,
+    breaks: true,
+    langPrefix: "",
     linkify: true,
     typographer: true,
     highlight: highlightRender
 });
+md.renderer.rules.list_item_open = function (/* tokens, idx, options, env */) {
+  return '<li class="raw">';
+};
+md.renderer.rules.blockquote_open = function (tokens, idx /*, options, env */ ) {
+    return '<blockquote class="raw">\n';
+};
+md.renderer.rules.hardbreak = function (tokens, idx, options /*, env */ ) {
+    return md.options.xhtmlOut ? '<br /><br />' : '<br><br>';
+};
+md.renderer.rules.fence = function (tokens, idx, options, env, self) {
+    var token = tokens[idx];
+    var langClass = '';
+    var langPrefix = options.langPrefix;
+    var langName = '',
+        fenceName;
+    var highlighted;
+
+    if (token.params) {
+
+        //
+        // ```foo bar
+        //
+        // Try custom renderer "foo" first. That will simplify overwrite
+        // for diagrams, latex, and any other fenced block with custom look
+        //
+
+        fenceName = token.params.split(/\s+/g)[0];
+
+        if (Remarkable.utils.has(self.rules.fence_custom, fenceName)) {
+            return self.rules.fence_custom[fenceName](tokens, idx, options, env, self);
+        }
+
+        langName = Remarkable.utils.escapeHtml(Remarkable.utils.replaceEntities(Remarkable.utils.unescapeMd(fenceName)));
+        langClass = ' class="' + langPrefix + langName.replace('=', '') + ' hljs"';
+    }
+
+    if (options.highlight) {
+        highlighted = options.highlight(token.content, langName) || Remarkable.utils.escapeHtml(token.content);
+    } else {
+        highlighted = Remarkable.utils.escapeHtml(token.content);
+    }
+
+    return '<pre><code' + langClass + '>' + highlighted + '</code></pre>' + md.renderer.getBreak(tokens, idx);
+};
 //youtube
 var youtubePlugin = new Plugin(
     // regexp to match
@@ -251,7 +418,7 @@ var youtubePlugin = new Plugin(
     function (match, utils) {
         var videoid = match[1];
         if (!videoid) return;
-        var div = $('<div class="youtube"></div>');
+        var div = $('<div class="youtube raw"></div>');
         setSizebyAttr(div, div);
         div.attr('videoid', videoid);
         var icon = '<i class="icon fa fa-youtube-play fa-5x"></i>';
@@ -270,7 +437,7 @@ var vimeoPlugin = new Plugin(
     function (match, utils) {
         var videoid = match[1];
         if (!videoid) return;
-        var div = $('<div class="vimeo"></div>');
+        var div = $('<div class="vimeo raw"></div>');
         setSizebyAttr(div, div);
         div.attr('videoid', videoid);
         var icon = '<i class="icon fa fa-vimeo-square fa-5x"></i>';
@@ -298,7 +465,7 @@ var mathjaxPlugin = new Plugin(
     // this function will be called when something matches
     function (match, utils) {
         //var code = $(match).text();
-        return '<span class="mathjax">' + match[0] + '</span>';
+        return '<span class="mathjax raw">' + match[0] + '</span>';
     }
 );
 md.use(youtubePlugin);
diff --git a/public/js/fb.js b/public/js/fb.js
deleted file mode 100644
index 0bb7a466..00000000
--- a/public/js/fb.js
+++ /dev/null
@@ -1,8 +0,0 @@
-(function (d, s, id) {
-    var js, fjs = d.getElementsByTagName(s)[0];
-    if (d.getElementById(id)) return;
-    js = d.createElement(s);
-    js.id = id;
-    js.src = "//connect.facebook.net/en_US/sdk.js#xfbml=1&version=v2.3&appId=1436904003272070";
-    fjs.parentNode.insertBefore(js, fjs);
-}(document, 'script', 'facebook-jssdk'));
\ No newline at end of file
diff --git a/public/js/history.js b/public/js/history.js
index c5db94c5..15e46cc6 100644
--- a/public/js/history.js
+++ b/public/js/history.js
@@ -319,8 +319,9 @@ function parseToHistory(list, notehistory, callback) {
     else if (notehistory && notehistory.length > 0) {
         for (var i = 0; i < notehistory.length; i++) {
             //parse time to timestamp and fromNow
-            notehistory[i].timestamp = moment(notehistory[i].time, 'MMMM Do YYYY, h:mm:ss a').unix();
+            notehistory[i].timestamp = moment(notehistory[i].time, 'MMMM Do YYYY, h:mm:ss a').valueOf();
             notehistory[i].fromNow = moment(notehistory[i].time, 'MMMM Do YYYY, h:mm:ss a').fromNow();
+            notehistory[i].time = moment(notehistory[i].time, 'MMMM Do YYYY, h:mm:ss a').format('llll');
             if (list.get('id', notehistory[i].id).length == 0)
                 list.add(notehistory[i]);
         }
diff --git a/public/js/index.js b/public/js/index.js
index 24b38f75..5f7e6992 100644
--- a/public/js/index.js
+++ b/public/js/index.js
@@ -1,16 +1,21 @@
 //constant vars
 //settings
 var debug = false;
-var version = '0.2.9';
+var version = '0.3.1';
 
 var defaultTextHeight = 18;
 var viewportMargin = 20;
 var defaultExtraKeys = {
+    "Cmd-S": function () {
+        return CodeMirror.PASS
+    },
+    "Ctrl-S": function () {
+        return CodeMirror.PASS
+    },
     "Enter": "newlineAndIndentContinueMarkdownList"
 };
 
 var idleTime = 300000; //5 mins
-var doneTypingDelay = 400;
 var finishChangeDelay = 400;
 var cursorActivityDelay = 50;
 var cursorAnimatePeriod = 100;
@@ -97,12 +102,27 @@ var supportExternals = [
         search: 'gist'
     }
 ];
-var supportGenerals = [
+var supportBlockquoteTags = [
+    {
+        text: '[name tag]',
+        search: '[]',
+        command: function () {
+            return '[name=' + personalInfo.name + ']';
+        },
+    },
     {
+        text: '[time tag]',
+        search: '[]',
         command: function () {
-            return moment().format('llll');
+            return '[time=' + moment().format('llll') + ']';
         },
-        search: 'time'
+    },
+    {
+        text: '[color tag]',
+        search: '[]',
+        command: function () {
+            return '[color=' + personalInfo.color + ']';
+        }
     }
 ];
 var modeType = {
@@ -131,6 +151,7 @@ var defaultMode = modeType.both;
 
 //global vars
 var loaded = false;
+var needRefresh = false;
 var isDirty = false;
 var editShown = false;
 var visibleXS = false;
@@ -192,7 +213,7 @@ var editor = CodeMirror.fromTextArea(textit, {
     extraKeys: defaultExtraKeys,
     readOnly: true
 });
-inlineAttachment.editors.codemirror4.attach(editor);
+var inlineAttach = inlineAttachment.editors.codemirror4.attach(editor);
 defaultTextHeight = parseInt($(".CodeMirror").css('line-height'));
 
 //ui vars
@@ -203,7 +224,7 @@ var ui = {
         shortStatus: $(".ui-short-status"),
         status: $(".ui-status"),
         new: $(".ui-new"),
-        pretty: $(".ui-pretty"),
+        share: $(".ui-share"),
         download: {
             markdown: $(".ui-download-markdown")
         },
@@ -217,7 +238,24 @@ var ui = {
         mode: $(".ui-mode"),
         edit: $(".ui-edit"),
         view: $(".ui-view"),
-        both: $(".ui-both")
+        both: $(".ui-both"),
+        uploadImage: $(".ui-upload-image")
+    },
+    infobar: {
+        lastchange: $(".ui-lastchange"),
+        permission: {
+            permission: $(".ui-permission"),
+            label: $(".ui-permission-label"),
+            freely: $(".ui-permission-freely"),
+            editable: $(".ui-permission-editable"),
+            locked: $(".ui-permission-locked")
+        }
+    },
+    toc: {
+        toc: $('.ui-toc'),
+        affix: $('.ui-affix-toc'),
+        label: $('.ui-toc-label'),
+        dropdown: $('.ui-toc-dropdown')
     },
     area: {
         edit: $(".ui-edit-area"),
@@ -263,10 +301,16 @@ function idleStateChange() {
     updateOnlineStatus();
 }
 
-loginStateChangeEvent = function () {
-    location.reload(true);
+function setNeedRefresh() {
+    $('#refreshModal').modal('show');
+    needRefresh = true;
+    editor.setOption('readOnly', true);
+    socket.disconnect();
+    showStatus(statusType.offline);
 }
 
+loginStateChangeEvent = setNeedRefresh;
+
 //visibility
 var wasFocus = false;
 Visibility.change(function (e, state) {
@@ -315,6 +359,11 @@ $(document).ready(function () {
                 $body.removeClass('fixfixed');
             });
     }
+    //showup
+    $().showUp('.navbar', {
+        upClass: 'navbar-hide',
+        downClass: 'navbar-show'
+    });
 });
 //when page resize
 var windowResizeDelay = 200;
@@ -327,12 +376,38 @@ $(window).resize(function () {
 });
 //when page unload
 $(window).unload(function () {
-    emitRefresh();
+    emitUpdate();
 });
 
+//when page hash change
+window.onhashchange = locationHashChanged;
+
+function locationHashChanged(e) {
+    e.stopPropagation();
+    e.preventDefault();
+    if (currentMode != modeType.both) {
+        return;
+    }
+    var hashtarget = $("[id$='" + location.hash.substr(1) + "']");
+    if (hashtarget.length > 0) {
+        var linenumber = hashtarget.attr('data-startline');
+        if (linenumber) {
+            editor.setOption('viewportMargin', Infinity);
+            editor.setOption('viewportMargin', viewportMargin);
+            var t = editor.charCoords({
+                line: linenumber,
+                ch: 0
+            }, "local").top;
+            editor.scrollTo(null, t - defaultTextHeight * 1.2);
+        }
+    }
+}
+
 function windowResize() {
     checkResponsive();
     checkEditorStyle();
+    checkTocStyle();
+    //refresh editor
     if (loaded) {
         editor.setOption('viewportMargin', Infinity);
         setTimeout(function () {
@@ -373,6 +448,39 @@ function checkEditorStyle() {
     }
 }
 
+function checkTocStyle() {
+    //toc right
+    var paddingRight = parseFloat(ui.area.markdown.css('padding-right'));
+    var right = ($(window).width() - (ui.area.markdown.offset().left + ui.area.markdown.outerWidth() - paddingRight));
+    ui.toc.toc.css('right', right + 'px');
+    //affix toc left
+    var newbool;
+    var rightMargin = (ui.area.markdown.parent().outerWidth() - ui.area.markdown.outerWidth()) / 2;
+    //for ipad or wider device
+    if (rightMargin >= 133) {
+        newbool = true;
+        var affixLeftMargin = (ui.toc.affix.outerWidth() - ui.toc.affix.width()) / 2;
+        var left = ui.area.markdown.offset().left + ui.area.markdown.outerWidth() - affixLeftMargin;
+        ui.toc.affix.css('left', left + 'px');
+    } else {
+        newbool = false;
+    }
+    //toc scrollspy
+    ui.toc.toc.removeClass('scrollspy-body, scrollspy-view');
+    ui.toc.affix.removeClass('scrollspy-body, scrollspy-view');
+    if (currentMode != modeType.both && !newbool) {
+        ui.toc.toc.addClass('scrollspy-body');
+        ui.toc.affix.addClass('scrollspy-body');
+    } else {
+        ui.toc.toc.addClass('scrollspy-view');
+        ui.toc.affix.addClass('scrollspy-body');
+    }
+    if (newbool != enoughForAffixToc) {
+        enoughForAffixToc = newbool;
+        generateScrollspy();
+    }
+}
+
 function showStatus(type, num) {
     currentStatus = type;
     var shortStatus = ui.toolbar.shortStatus;
@@ -461,12 +569,21 @@ function changeMode(type) {
     }
     if (currentMode != modeType.view && visibleLG) {
         //editor.focus();
-        editor.refresh();
+        //editor.refresh();
     } else {
         editor.getInputField().blur();
     }
-    if (changeMode != modeType.edit)
+    if (currentMode == modeType.edit || currentMode == modeType.both) {
+        ui.toolbar.uploadImage.fadeIn();
+    } else {
+        ui.toolbar.uploadImage.fadeOut();
+    }
+    if (currentMode != modeType.edit) {
+        $(document.body).css('background-color', 'white');
         updateView();
+    } else {
+        $(document.body).css('background-color', ui.area.codemirror.css('background-color'));
+    }
     restoreInfo();
 
     windowResize();
@@ -489,10 +606,9 @@ function changeMode(type) {
 }
 
 //button actions
-var noteId = window.location.pathname.split('/')[1];
-var url = window.location.origin + '/' + noteId;
-//pretty
-ui.toolbar.pretty.attr("href", url + "/pretty");
+var url = window.location.pathname;
+//share
+ui.toolbar.share.attr("href", url + "/share");
 //download
 //markdown
 ui.toolbar.download.markdown.click(function () {
@@ -534,6 +650,73 @@ ui.toolbar.import.dropbox.click(function () {
 ui.toolbar.import.clipboard.click(function () {
     //na
 });
+//upload image
+ui.toolbar.uploadImage.bind('change', function (e) {
+    var files = e.target.files || e.dataTransfer.files;
+    e.dataTransfer = {};
+    e.dataTransfer.files = files;
+    inlineAttach.onDrop(e);
+});
+//toc
+ui.toc.dropdown.click(function (e) {
+    e.stopPropagation();
+});
+
+function scrollToTop() {
+    if (currentMode == modeType.both) {
+        if (editor.getScrollInfo().top != 0)
+            editor.scrollTo(0, 0);
+        else
+            ui.area.view.animate({
+                scrollTop: 0
+            }, 100, "linear");
+    } else {
+        $(document.body).animate({
+            scrollTop: 0
+        }, 100, "linear");
+    }
+}
+
+function scrollToBottom() {
+    if (currentMode == modeType.both) {
+        var scrollInfo = editor.getScrollInfo();
+        var scrollHeight = scrollInfo.height;
+        if (scrollInfo.top != scrollHeight)
+            editor.scrollTo(0, scrollHeight * 2);
+        else
+            ui.area.view.animate({
+                scrollTop: ui.area.view[0].scrollHeight
+            }, 100, "linear");
+    } else {
+        $(document.body).animate({
+            scrollTop: $(document.body)[0].scrollHeight
+        }, 100, "linear");
+    }
+}
+
+var enoughForAffixToc = true;
+
+//scrollspy
+function generateScrollspy() {
+    $(document.body).scrollspy({
+        target: '.scrollspy-body'
+    });
+    ui.area.view.scrollspy({
+        target: '.scrollspy-view'
+    });
+    $(document.body).scrollspy('refresh');
+    ui.area.view.scrollspy('refresh');
+    if (enoughForAffixToc) {
+        ui.toc.toc.hide();
+        ui.toc.affix.show();
+    } else {
+        ui.toc.affix.hide();
+        ui.toc.toc.show();
+    }
+    $(document.body).scroll();
+    ui.area.view.scroll();
+}
+
 //fix for wrong autofocus
 $('#clipboardModal').on('shown.bs.modal', function () {
     $('#clipboardModal').blur();
@@ -549,6 +732,9 @@ $("#clipboardModalConfirm").click(function () {
         $("#clipboardModalContent").html('');
     }
 });
+$('#refreshModalRefresh').click(function () {
+    location.reload(true);
+});
 
 function parseToEditor(data) {
     var parsed = toMarkdown(data);
@@ -585,19 +771,20 @@ function importFromUrl(url) {
 }
 
 function isValidURL(str) {
-        var pattern = new RegExp('^(https?:\\/\\/)?' + // protocol
-            '((([a-z\\d]([a-z\\d-]*[a-z\\d])*)\\.)+[a-z]{2,}|' + // domain name
-            '((\\d{1,3}\\.){3}\\d{1,3}))' + // OR ip (v4) address
-            '(\\:\\d+)?(\\/[-a-z\\d%_.~+]*)*' + // port and path
-            '(\\?[;&a-z\\d%_.~+=-]*)?' + // query string
-            '(\\#[-a-z\\d_]*)?$', 'i'); // fragment locator
-        if (!pattern.test(str)) {
-            return false;
-        } else {
-            return true;
-        }
+    var pattern = new RegExp('^(https?:\\/\\/)?' + // protocol
+        '((([a-z\\d]([a-z\\d-]*[a-z\\d])*)\\.)+[a-z]{2,}|' + // domain name
+        '((\\d{1,3}\\.){3}\\d{1,3}))' + // OR ip (v4) address
+        '(\\:\\d+)?(\\/[-a-z\\d%_.~+]*)*' + // port and path
+        '(\\?[;&a-z\\d%_.~+=-]*)?' + // query string
+        '(\\#[-a-z\\d_]*)?$', 'i'); // fragment locator
+    if (!pattern.test(str)) {
+        return false;
+    } else {
+        return true;
     }
-    //mode
+}
+
+//mode
 ui.toolbar.mode.click(function () {
     toggleMode();
 });
@@ -613,18 +800,63 @@ ui.toolbar.view.click(function () {
 ui.toolbar.both.click(function () {
     changeMode(modeType.both);
 });
+//permission
+//freely
+ui.infobar.permission.freely.click(function () {
+    updatePermission("freely");
+});
+//editable
+ui.infobar.permission.editable.click(function () {
+    updatePermission("editable");
+});
+//locked
+ui.infobar.permission.locked.click(function () {
+    updatePermission("locked");
+});
+
+function updatePermission(_permission) {
+    if (_permission != permission) {
+        socket.emit('permission', _permission);
+    }
+}
+
+function checkPermission() {
+    var label = null;
+    var title = null;
+    switch (permission) {
+    case "freely":
+        label = '<i class="fa fa-leaf"></i> Freely';
+        title = "Anyone can edit";
+        break;
+    case "editable":
+        label = '<i class="fa fa-pencil"></i> Editable';
+        title = "Signed people can edit";
+        break;
+    case "locked":
+        label = '<i class="fa fa-lock"></i> Locked';
+        title = "Only owner can edit";
+        break;
+    }
+    if (personalInfo.userid == owner) {
+        label += ' <i class="fa fa-caret-down"></i>';
+        ui.infobar.permission.label.removeClass('disabled');
+    } else {
+        ui.infobar.permission.label.addClass('disabled');
+    }
+    ui.infobar.permission.label.html(label).attr('title', title);
+}
 
 //socket.io actions
 var socket = io.connect();
 //overwrite original event for checking login state
 var on = socket.on;
 socket.on = function () {
-    if (!checkLoginStateChanged())
+    if (!checkLoginStateChanged() && !needRefresh)
         on.apply(socket, arguments);
 };
 var emit = socket.emit;
 socket.emit = function () {
-    if (!checkLoginStateChanged())
+    if (!checkLoginStateChanged() && !needRefresh)
         emit.apply(socket, arguments);
 };
 socket.on('info', function (data) {
@@ -653,17 +885,53 @@ socket.on('connect', function (data) {
 });
 socket.on('version', function (data) {
     if (data != version)
-        location.reload(true);
+        setNeedRefresh();
+});
+socket.on('check', function (data) {
+    if (data.id == socket.id) {
+        lastchangetime = data.updatetime;
+        lastchangeui = ui.infobar.lastchange;
+        updateLastChange();
+        return;
+    }
+    var currentHash = md5(LZString.compressToUTF16(editor.getValue()));
+    var hashMismatch = (currentHash != data.hash);
+    if (hashMismatch)
+        socket.emit('refresh');
+    else {
+        lastchangetime = data.updatetime;
+        lastchangeui = ui.infobar.lastchange;
+        updateLastChange();
+    }
 });
+socket.on('permission', function (data) {
+    permission = data.permission;
+    checkPermission();
+});
+var otk = null;
+var owner = null;
+var permission = null;
 socket.on('refresh', function (data) {
+    var currentHash = md5(LZString.compressToUTF16(editor.getValue()));
+    var hashMismatch = (currentHash != data.hash);
     saveInfo();
 
-    var body = data.body;
-    body = LZString.decompressFromUTF16(body);
-    if (body)
-        editor.setValue(body);
-    else
-        editor.setValue("");
+    otk = data.otk;
+    owner = data.owner;
+    permission = data.permission;
+
+    if (hashMismatch) {
+        var body = data.body;
+        body = LZString.decompressFromUTF16(body);
+        if (body)
+            editor.setValue(body);
+        else
+            editor.setValue("");
+    }
+
+    lastchangetime = data.updatetime;
+    lastchangeui = ui.infobar.lastchange;
+    updateLastChange();
 
     if (!loaded) {
         editor.clearHistory();
@@ -673,9 +941,19 @@ socket.on('refresh', function (data) {
         loaded = true;
         emitUserStatus(); //send first user status
         updateOnlineStatus(); //update first online status
+        setTimeout(function () {
+            //work around editor not refresh
+            editor.refresh();
+            //work around cursor not refresh
+            for (var i = 0; i < onlineUsers.length; i++) {
+                buildCursor(onlineUsers[i]);
+            }
+            //work around might not scroll to hash
+            scrollToHash();
+        }, 1);
     } else {
         //if current doc is equal to the doc before disconnect
-        if (LZString.compressToUTF16(editor.getValue()) !== data.body)
+        if (hashMismatch)
             editor.clearHistory();
         else {
             if (lastInfo.history)
@@ -684,21 +962,58 @@ socket.on('refresh', function (data) {
         lastInfo.history = null;
     }
 
-    updateView();
+    if (hashMismatch)
+        updateView();
 
     if (editor.getOption('readOnly'))
         editor.setOption('readOnly', false);
 
     restoreInfo();
+    checkPermission();
 });
+
+var changeStack = [];
+var changeBusy = false;
+
 socket.on('change', function (data) {
     data = LZString.decompressFromUTF16(data);
     data = JSON.parse(data);
-    editor.replaceRange(data.text, data.from, data.to, "ignoreHistory");
-    isDirty = true;
-    clearTimeout(finishChangeTimer);
-    finishChangeTimer = setTimeout(finishChange, finishChangeDelay);
+    changeStack.push(data);
+    if (!changeBusy)
+        executeChange();
 });
+
+function executeChange() {
+    if (changeStack.length > 0) {
+        changeBusy = true;
+        var data = changeStack.shift();
+        if (data.otk != otk) {
+            var found = false;
+            for (var i = 0, l = changeStack.length; i < l; i++) {
+                if (changeStack[i].otk == otk) {
+                    changeStack.unshift(data);
+                    data = changeStack[i];
+                    found = true;
+                    break;
+                }
+            }
+            if (!found) {
+                socket.emit('refresh');
+                changeBusy = false;
+                return;
+            }
+        }
+        otk = data.nextotk;
+        if (data.id == personalInfo.id)
+            editor.replaceRange(data.text, data.from, data.to, 'self::' + data.origin);
+        else
+            editor.replaceRange(data.text, data.from, data.to, "ignoreHistory");
+        executeChange();
+    } else {
+        changeBusy = false;
+    }
+}
+
 socket.on('online users', function (data) {
     data = LZString.decompressFromUTF16(data);
     data = JSON.parse(data);
@@ -795,7 +1110,7 @@ var onlineUserList = new List('online-user-list', options);
 var shortOnlineUserList = new List('short-online-user-list', options);
 
 function updateOnlineStatus() {
-    if (!loaded) return;
+    if (!loaded || !socket.connected) return;
     var _onlineUsers = deduplicateOnlineUsers(onlineUsers);
     showStatus(statusType.online, _onlineUsers.length);
     var items = onlineUserList.items;
@@ -851,7 +1166,7 @@ function sortOnlineUserList(list) {
             var userbIsSelf = (userb.id == personalInfo.id || (userb.login && userb.userid == personalInfo.userid));
             if (useraIsSelf && !userbIsSelf) {
                 return -1;
-            } else if(!useraIsSelf && userbIsSelf) {
+            } else if (!useraIsSelf && userbIsSelf) {
                 return 1;
             } else {
                 if (usera.login && !userb.login)
@@ -975,7 +1290,7 @@ function checkCursorTag(coord, ele) {
     var offsetTop = defaultTextHeight;
     if (width > 0 && height > 0) {
         if (left + width + offsetLeft > editorWidth - curosrtagMargin) {
-            offsetLeft = -(width + 4);
+            offsetLeft = -(width + 10);
         }
         if (top + height + offsetTop > Math.max(viewportHeight, editorHeight) + curosrtagMargin && top - height > curosrtagMargin) {
             offsetTop = -(height);
@@ -1124,16 +1439,61 @@ function buildCursor(user) {
 editor.on('beforeChange', function (cm, change) {
     if (debug)
         console.debug(change);
+    var self = change.origin.split('self::');
+    if (self.length == 2) {
+        change.origin = self[1];
+        self = true;
+    } else {
+        self = false;
+    }
+    if (self) {
+        change.canceled = true;
+    } else {
+        var isIgnoreEmitEvent = (ignoreEmitEvents.indexOf(change.origin) != -1);
+        if (!isIgnoreEmitEvent) {
+            switch (permission) {
+            case "freely":
+                //na
+                break;
+            case "editable":
+                if (!personalInfo.login) {
+                    change.canceled = true;
+                    $('.signin-modal').modal('show');
+                }
+                break;
+            case "locked":
+                if (personalInfo.userid != owner) {
+                    change.canceled = true;
+                    $('.locked-modal').modal('show');
+                }
+                break;
+            }
+        }
+    }
 });
+
+var ignoreEmitEvents = ['setValue', 'ignoreHistory'];
 editor.on('change', function (i, op) {
     if (debug)
         console.debug(op);
-    if (op.origin != 'setValue' && op.origin != 'ignoreHistory') {
-        socket.emit('change', LZString.compressToUTF16(JSON.stringify(op)));
+    var isIgnoreEmitEvent = (ignoreEmitEvents.indexOf(op.origin) != -1);
+    if (!isIgnoreEmitEvent) {
+        var out = {
+            text: op.text,
+            from: op.from,
+            to: op.to,
+            origin: op.origin
+        };
+        socket.emit('change', LZString.compressToUTF16(JSON.stringify(out)));
     }
     isDirty = true;
-    clearTimeout(doneTypingTimer);
-    doneTypingTimer = setTimeout(doneTyping, doneTypingDelay);
+    clearTimeout(finishChangeTimer);
+    finishChangeTimer = setTimeout(function () {
+        if (!isIgnoreEmitEvent)
+            finishChange(true);
+        else
+            finishChange(false);
+    }, finishChangeDelay);
 });
 editor.on('focus', function (cm) {
     for (var i = 0; i < onlineUsers.length; i++) {
@@ -1236,22 +1596,17 @@ function restoreInfo() {
 }
 
 //view actions
-var doneTypingTimer = null;
 var finishChangeTimer = null;
-var input = editor.getInputField();
-//user is "finished typing," do something
-function doneTyping() {
-    emitRefresh();
-    updateView();
-}
 
-function finishChange() {
+function finishChange(emit) {
+    if (emit)
+        emitUpdate();
     updateView();
 }
 
-function emitRefresh() {
+function emitUpdate() {
     var value = editor.getValue();
-    socket.emit('refresh', LZString.compressToUTF16(value));
+    socket.emit('update', LZString.compressToUTF16(value));
 }
 
 var lastResult = null;
@@ -1267,6 +1622,11 @@ function updateView() {
         updateDataAttrs(result, ui.area.markdown.children().toArray());
     lastResult = $(result).clone();
     finishView(ui.area.view);
+    autoLinkify(ui.area.view);
+    generateToc('toc');
+    generateToc('toc-affix');
+    generateScrollspy();
+    smoothHashScroll();
     writeHistory(ui.area.markdown);
     isDirty = false;
     clearMap();
@@ -1535,7 +1895,7 @@ $(editor.getInputField())
                 return '$1```' + lang + '=\n\n```';
             },
             done: function () {
-                editor.doc.cm.moveV(-1, "line");
+                editor.doc.cm.execCommand("goLineUp");
             },
             context: function () {
                 return isInCode;
@@ -1556,12 +1916,19 @@ $(editor.getInputField())
                 return !isInCode;
             }
     },
-        { //referral
-            match: /(^|\n|\s)(\!|\!|\[\])(\w*)$/,
+        { //blockquote personal info & general info
+            match: /(?:^|\n|\s)(\>.*)(\[\])(\w*)$/,
             search: function (term, callback) {
-                callback($.map(supportReferrals, function (referral) {
-                    return referral.search.indexOf(term) === 0 ? referral.text : null;
-                }));
+                var list = [];
+                $.map(supportBlockquoteTags, function (blockquotetag) {
+                    if (blockquotetag.search.indexOf(term) === 0)
+                        list.push(blockquotetag.command());
+                });
+                $.map(supportReferrals, function (referral) {
+                    if (referral.search.indexOf(term) === 0)
+                        list.push(referral.text);
+                })
+                callback(list);
                 checkCursorMenu();
             },
             replace: function (value) {
@@ -1571,11 +1938,11 @@ $(editor.getInputField())
                 return !isInCode;
             }
     },
-        { //externals
-            match: /(^|\n|\s)\{\}(\w*)$/,
+        { //referral
+            match: /(^|\n|\s)(\!|\!|\[\])(\w*)$/,
             search: function (term, callback) {
-                callback($.map(supportExternals, function (external) {
-                    return external.search.indexOf(term) === 0 ? external.text : null;
+                callback($.map(supportReferrals, function (referral) {
+                    return referral.search.indexOf(term) === 0 ? referral.text : null;
                 }));
                 checkCursorMenu();
             },
@@ -1586,36 +1953,16 @@ $(editor.getInputField())
                 return !isInCode;
             }
     },
-        { //blockquote personal info & general info
-            match: /(^|\n|\s|\>.*)\[(\w*)=$/,
-            search: function (term, callback) {
-                var list = typeof personalInfo[term] != 'undefined' ? [personalInfo[term]] : [];
-                $.map(supportGenerals, function (general) {
-                    if (general.search.indexOf(term) === 0)
-                        list.push(general.command());
-                });
-                callback(list);
-                checkCursorMenu();
-            },
-            replace: function (value) {
-                return '$1[$2=' + value;
-            },
-            context: function (text) {
-                return !isInCode;
-            }
-    },
-        { //blockquote quick start tag
-            match: /(^.*(?!>)\n|)(\>\s{0,1})$/,
+        { //externals
+            match: /(^|\n|\s)\{\}(\w*)$/,
             search: function (term, callback) {
-                var self = '[name=' + personalInfo.name + '] [time=' + moment().format('llll') + '] [color=' + personalInfo.color + ']';
-                callback([self]);
+                callback($.map(supportExternals, function (external) {
+                    return external.search.indexOf(term) === 0 ? external.text : null;
+                }));
                 checkCursorMenu();
             },
-            template: function (value) {
-                return '[Your name, time, color tags]';
-            },
             replace: function (value) {
-                return '$1$2' + value;
+                return '$1' + value;
             },
             context: function (text) {
                 return !isInCode;
diff --git a/public/js/pretty.js b/public/js/pretty.js
index 33b97803..6fff4d03 100644
--- a/public/js/pretty.js
+++ b/public/js/pretty.js
@@ -1,9 +1,81 @@
-var raw = $(".markdown-body").text();
-var markdown = LZString.decompressFromBase64(raw);
-var result = postProcess(md.render(markdown));
 var markdown = $(".markdown-body");
-markdown.html(result);
-markdown.show();
+var text = $('<textarea/>').html(markdown.html()).text();
+var result = postProcess(md.render(text));
+markdown.html(result.html());
+$(document.body).show();
 finishView(markdown);
 autoLinkify(markdown);
-scrollToHash();
\ No newline at end of file
+generateToc('toc');
+generateToc('toc-affix');
+smoothHashScroll();
+lastchangetime = $('.ui-lastchange').text();
+lastchangeui = $('.ui-lastchange');
+updateLastChange();
+var url = window.location.pathname;
+$('.ui-edit').attr('href', url + '/edit');
+var toc = $('.ui-toc');
+var tocAffix = $('.ui-affix-toc');
+var tocDropdown = $('.ui-toc-dropdown');
+//toc
+tocDropdown.click(function (e) {
+    e.stopPropagation();
+});
+
+var enoughForAffixToc = true;
+
+function generateScrollspy() {
+    $(document.body).scrollspy({
+        target: ''
+    });
+    $(document.body).scrollspy('refresh');
+    if (enoughForAffixToc) {
+        toc.hide();
+        tocAffix.show();
+    } else {
+        tocAffix.hide();
+        toc.show();
+    }
+    $(document.body).scroll();
+}
+
+function windowResize() {
+    //toc right
+    var paddingRight = parseFloat(markdown.css('padding-right'));
+    var right = ($(window).width() - (markdown.offset().left + markdown.outerWidth() - paddingRight));
+    toc.css('right', right + 'px');
+    //affix toc left
+    var newbool;
+    var rightMargin = (markdown.parent().outerWidth() - markdown.outerWidth()) / 2;
+    //for ipad or wider device
+    if (rightMargin >= 133) {
+        newbool = true;
+        var affixLeftMargin = (tocAffix.outerWidth() - tocAffix.width()) / 2;
+        var left = markdown.offset().left + markdown.outerWidth() - affixLeftMargin;
+        tocAffix.css('left', left + 'px');
+    } else {
+        newbool = false;
+    }
+    if (newbool != enoughForAffixToc) {
+        enoughForAffixToc = newbool;
+        generateScrollspy();
+    }
+}
+$(window).resize(function () {
+    windowResize();
+});
+$(document).ready(function () {
+    windowResize();
+    generateScrollspy();
+});
+
+function scrollToTop() {
+    $(document.body).animate({
+        scrollTop: 0
+    }, 100, "linear");
+}
+
+function scrollToBottom() {
+    $(document.body).animate({
+        scrollTop: $(document.body)[0].scrollHeight
+    }, 100, "linear");
+}
\ No newline at end of file
diff --git a/public/js/syncscroll.js b/public/js/syncscroll.js
index 4dee0996..48829a4a 100644
--- a/public/js/syncscroll.js
+++ b/public/js/syncscroll.js
@@ -8,7 +8,7 @@ md.renderer.rules.blockquote_open = function (tokens, idx /*, options, env */ )
     if (tokens[idx].lines && tokens[idx].level === 0) {
         var startline = tokens[idx].lines[0] + 1;
         var endline = tokens[idx].lines[1];
-        return '<blockquote class="part" data-startline="' + startline + '" data-endline="' + endline + '">\n';
+        return '<blockquote class="raw part" data-startline="' + startline + '" data-endline="' + endline + '">\n';
     }
     return '<blockquote>\n';
 };
@@ -55,9 +55,9 @@ md.renderer.rules.paragraph_open = function (tokens, idx) {
     if (tokens[idx].lines && tokens[idx].level === 0) {
         var startline = tokens[idx].lines[0] + 1;
         var endline = tokens[idx].lines[1];
-        return '<p class="part" data-startline="' + startline + '" data-endline="' + endline + '">';
+        return tokens[idx].tight ? '' : '<p class="part" data-startline="' + startline + '" data-endline="' + endline + '">';
     }
-    return '';
+    return tokens[idx].tight ? '' : '<p>';
 };
 
 md.renderer.rules.heading_open = function (tokens, idx) {
@@ -106,7 +106,7 @@ md.renderer.rules.fence = function (tokens, idx, options, env, self) {
         }
 
         langName = Remarkable.utils.escapeHtml(Remarkable.utils.replaceEntities(Remarkable.utils.unescapeMd(fenceName)));
-        langClass = ' class="' + langPrefix + langName + '"';
+        langClass = ' class="' + langPrefix + langName.replace('=', '') + ' hljs"';
     }
 
     if (options.highlight) {
@@ -193,7 +193,8 @@ function buildMapInner(syncBack) {
         'line-height': textarea.css('line-height'),
         'word-wrap': wrap.css('word-wrap'),
         'white-space': wrap.css('white-space'),
-        'word-break': wrap.css('word-break')
+        'word-break': wrap.css('word-break'),
+        'tab-size': '38px'
     }).appendTo('body');
 
     offset = ui.area.view.scrollTop() - ui.area.view.offset().top;
@@ -313,7 +314,7 @@ function syncScrollToView(event, _lineNo) {
         var textHeight = editor.defaultTextHeight();
         lineNo = Math.floor(scrollInfo.top / textHeight);
         //if reach bottom, then scroll to end
-        if (scrollInfo.top + scrollInfo.clientHeight >= scrollInfo.height - defaultTextHeight) {
+        if (scrollInfo.height > scrollInfo.clientHeight && scrollInfo.top + scrollInfo.clientHeight >= scrollInfo.height - defaultTextHeight) {
             posTo = ui.area.view[0].scrollHeight - ui.area.view.height();
         } else {
             topDiffPercent = (scrollInfo.top % textHeight) / textHeight;
diff --git a/public/vendor/codemirror/addon/comment/continuecomment.js b/public/vendor/codemirror/addon/comment/continuecomment.js
index b11d51e6..d0b81d30 100755
--- a/public/vendor/codemirror/addon/comment/continuecomment.js
+++ b/public/vendor/codemirror/addon/comment/continuecomment.js
@@ -57,7 +57,7 @@
 
     cm.operation(function() {
       for (var i = ranges.length - 1; i >= 0; i--)
-        cm.replaceRange(inserts[i], ranges[i].from(), ranges[i].to(), "+insert");
+        cm.replaceRange(inserts[i], ranges[i].from(), ranges[i].to(), "+input");
     });
   }
 
diff --git a/public/vendor/codemirror/codemirror.min.js b/public/vendor/codemirror/codemirror.min.js
index 24a84d1a..020129ff 100644
--- a/public/vendor/codemirror/codemirror.min.js
+++ b/public/vendor/codemirror/codemirror.min.js
@@ -2,12 +2,12 @@
 
 }if(po&&9>ho&&!l&&(!i||!i.left&&!i.right)){var d=a.parentNode.getClientRects()[0];i=d?{left:d.left,right:d.left+vt(e.display),top:d.top,bottom:d.bottom}:Do}for(var p=i.top-t.rect.top,h=i.bottom-t.rect.top,m=(p+h)/2,g=t.view.measure.heights,u=0;u<g.length-1&&!(m<g[u]);u++);var v=u?g[u-1]:0,y=g[u],b={left:("right"==c?i.right:i.left)-t.rect.left,right:("left"==c?i.left:i.right)-t.rect.left,top:v,bottom:y};return i.left||i.right||(b.bogus=!0),e.options.singleCursorHeightPerLine||(b.rtop=p,b.rbottom=h),b}function nt(e,t){if(!window.screen||null==screen.logicalXDPI||screen.logicalXDPI==screen.deviceXDPI||!Xi(e))return t;var n=screen.logicalXDPI/screen.deviceXDPI,r=screen.logicalYDPI/screen.deviceYDPI;return{left:t.left*n,right:t.right*n,top:t.top*r,bottom:t.bottom*r}}function rt(e){if(e.measure&&(e.measure.cache={},e.measure.heights=null,e.rest))for(var t=0;t<e.rest.length;t++)e.measure.caches[t]={}}function it(e){e.display.externalMeasure=null,Ri(e.display.lineMeasure);for(var t=0;t<e.display.view.length;t++)rt(e.display.view[t])}function ot(e){it(e),e.display.cachedCharWidth=e.display.cachedTextHeight=e.display.cachedPaddingH=null,e.options.lineWrapping||(e.display.maxLineChanged=!0),e.display.lineNumChars=null}function at(){return window.pageXOffset||(document.documentElement||document.body).scrollLeft}function lt(){return window.pageYOffset||(document.documentElement||document.body).scrollTop}function st(e,t,n,r){if(t.widgets)for(var i=0;i<t.widgets.length;++i)if(t.widgets[i].above){var o=_r(t.widgets[i]);n.top+=o,n.bottom+=o}if("line"==r)return n;r||(r="local");var a=Jr(t);if("local"==r?a+=Fe(e.display):a-=e.display.viewOffset,"page"==r||"window"==r){var l=e.display.lineSpace.getBoundingClientRect();a+=l.top+("window"==r?0:lt());var s=l.left+("window"==r?0:at());n.left+=s,n.right+=s}return n.top+=a,n.bottom+=a,n}function ct(e,t,n){if("div"==n)return t;var r=t.left,i=t.top;if("page"==n)r-=at(),i-=lt();else if("local"==n||!n){var o=e.display.sizer.getBoundingClientRect();r+=o.left,i+=o.top}var a=e.display.lineSpace.getBoundingClientRect();return{left:r-a.left,top:i-a.top}}function ut(e,t,n,r,i){return r||(r=Gr(e.doc,t.line)),st(e,r,Ze(e,r,t.ch,i),n)}function ft(e,t,n,r,i,o){function a(t,a){var l=Je(e,i,t,a?"right":"left",o);return a?l.left=l.right:l.right=l.left,st(e,r,l,n)}function l(e,t){var n=s[t],r=n.level%2;return e==Yi(n)&&t&&n.level<s[t-1].level?(n=s[--t],e=Qi(n)-(n.level%2?0:1),r=!0):e==Qi(n)&&t<s.length-1&&n.level<s[t+1].level&&(n=s[++t],e=Yi(n)-n.level%2,r=!1),r&&e==n.to&&e>n.from?a(e-1):a(e,r)}r=r||Gr(e.doc,t.line),i||(i=Qe(e,r));var s=ei(r),c=t.ch;if(!s)return a(c);var u=oo(s,c),f=l(c,u);return null!=Ya&&(f.other=l(c,Ya)),f}function dt(e,t){var n=0,t=me(e.doc,t);e.options.lineWrapping||(n=vt(e.display)*t.ch);var r=Gr(e.doc,t.line),i=Jr(r)+Fe(e.display);return{left:n,right:n,top:i,bottom:i+r.height}}function pt(e,t,n,r){var i=Eo(e,t);return i.xRel=r,n&&(i.outside=!0),i}function ht(e,t,n){var r=e.doc;if(n+=e.display.viewOffset,0>n)return pt(r.first,0,!0,-1);var i=Qr(r,n),o=r.first+r.size-1;if(i>o)return pt(r.first+r.size-1,Gr(r,o).text.length,!0,1);0>t&&(t=0);for(var a=Gr(r,i);;){var l=mt(e,a,i,t,n),s=dr(a),c=s&&s.find(0,!0);if(!s||!(l.ch>c.from.ch||l.ch==c.from.ch&&l.xRel>0))return l;i=Yr(a=c.to.line)}}function mt(e,t,n,r,i){function o(r){var i=ft(e,Eo(n,r),"line",t,c);return l=!0,a>i.bottom?i.left-s:a<i.top?i.left+s:(l=!1,i.left)}var a=i-Jr(t),l=!1,s=2*e.display.wrapper.clientWidth,c=Qe(e,t),u=ei(t),f=t.text.length,d=Ji(t),p=eo(t),h=o(d),m=l,g=o(p),v=l;if(r>g)return pt(n,p,v,1);for(;;){if(u?p==d||p==lo(t,d,1):1>=p-d){for(var y=h>r||g-r>=r-h?d:p,b=r-(y==d?h:g);Di(t.text.charAt(y));)++y;var x=pt(n,y,y==d?m:v,-1>b?-1:b>1?1:0);return x}var _=Math.ceil(f/2),k=d+_;if(u){k=d;for(var w=0;_>w;++w)k=lo(t,k,1)}var C=o(k);C>r?(p=k,g=C,(v=l)&&(g+=1e3),f=_):(d=k,h=C,m=l,f-=_)}}function gt(e){if(null!=e.cachedTextHeight)return e.cachedTextHeight;if(null==No){No=ji("pre");for(var t=0;49>t;++t)No.appendChild(document.createTextNode("x")),No.appendChild(ji("br"));No.appendChild(document.createTextNode("x"))}Wi(e.measure,No);var n=No.offsetHeight/50;return n>3&&(e.cachedTextHeight=n),Ri(e.measure),n||1}function vt(e){if(null!=e.cachedCharWidth)return e.cachedCharWidth;var t=ji("span","xxxxxxxxxx"),n=ji("pre",[t]);Wi(e.measure,n);var r=t.getBoundingClientRect(),i=(r.right-r.left)/10;return i>2&&(e.cachedCharWidth=i),i||10}function yt(e){e.curOp={cm:e,viewChanged:!1,startHeight:e.doc.height,forceUpdate:!1,updateInput:null,typing:!1,changeObjs:null,cursorActivityHandlers:null,cursorActivityCalled:0,selectionChanged:!1,updateMaxLine:!1,scrollLeft:null,scrollTop:null,scrollToPos:null,focus:!1,id:++Ro},jo?jo.ops.push(e.curOp):e.curOp.ownsGroup=jo={ops:[e.curOp],delayedCallbacks:[]}}function bt(e){var t=e.delayedCallbacks,n=0;do{for(;n<t.length;n++)t[n]();for(var r=0;r<e.ops.length;r++){var i=e.ops[r];if(i.cursorActivityHandlers)for(;i.cursorActivityCalled<i.cursorActivityHandlers.length;)i.cursorActivityHandlers[i.cursorActivityCalled++](i.cm)}}while(n<t.length)}function xt(e){var t=e.curOp,n=t.ownsGroup;if(n)try{bt(n)}finally{jo=null;for(var r=0;r<n.ops.length;r++)n.ops[r].cm.curOp=null;_t(n)}}function _t(e){for(var t=e.ops,n=0;n<t.length;n++)kt(t[n]);for(var n=0;n<t.length;n++)wt(t[n]);for(var n=0;n<t.length;n++)Ct(t[n]);for(var n=0;n<t.length;n++)St(t[n]);for(var n=0;n<t.length;n++)Mt(t[n])}function kt(e){var t=e.cm,n=t.display;M(t),e.updateMaxLine&&d(t),e.mustUpdate=e.viewChanged||e.forceUpdate||null!=e.scrollTop||e.scrollToPos&&(e.scrollToPos.from.line<n.viewFrom||e.scrollToPos.to.line>=n.viewTo)||n.maxLineChanged&&t.options.lineWrapping,e.update=e.mustUpdate&&new S(t,e.mustUpdate&&{top:e.scrollTop,ensure:e.scrollToPos},e.forceUpdate)}function wt(e){e.updatedDisplay=e.mustUpdate&&L(e.cm,e.update)}function Ct(e){var t=e.cm,n=t.display;e.updatedDisplay&&E(t),e.barMeasure=h(t),n.maxLineChanged&&!t.options.lineWrapping&&(e.adjustWidthTo=Ze(t,n.maxLine,n.maxLine.text.length).left+3,t.display.sizerWidth=e.adjustWidthTo,e.barMeasure.scrollWidth=Math.max(n.scroller.clientWidth,n.sizer.offsetLeft+e.adjustWidthTo+Be(t)+t.display.barWidth),e.maxScrollLeft=Math.max(0,n.sizer.offsetLeft+e.adjustWidthTo-Ue(t))),(e.updatedDisplay||e.selectionChanged)&&(e.preparedSelection=n.input.prepareSelection())}function St(e){var t=e.cm;null!=e.adjustWidthTo&&(t.display.sizer.style.minWidth=e.adjustWidthTo+"px",e.maxScrollLeft<t.doc.scrollLeft&&en(t,Math.min(t.display.scroller.scrollLeft,e.maxScrollLeft),!0),t.display.maxLineChanged=!1),e.preparedSelection&&t.display.input.showSelection(e.preparedSelection),e.updatedDisplay&&z(t,e.barMeasure),(e.updatedDisplay||e.startHeight!=t.doc.height)&&y(t,e.barMeasure),e.selectionChanged&&Pe(t),t.state.focused&&e.updateInput&&t.display.input.reset(e.typing),e.focus&&e.focus==Fi()&&Y(e.cm)}function Mt(e){var t=e.cm,n=t.display,r=t.doc;if(e.updatedDisplay&&T(t,e.update),null==n.wheelStartX||null==e.scrollTop&&null==e.scrollLeft&&!e.scrollToPos||(n.wheelStartX=n.wheelStartY=null),null==e.scrollTop||n.scroller.scrollTop==e.scrollTop&&!e.forceScroll||(r.scrollTop=Math.max(0,Math.min(n.scroller.scrollHeight-n.scroller.clientHeight,e.scrollTop)),n.scrollbars.setScrollTop(r.scrollTop),n.scroller.scrollTop=r.scrollTop),null==e.scrollLeft||n.scroller.scrollLeft==e.scrollLeft&&!e.forceScroll||(r.scrollLeft=Math.max(0,Math.min(n.scroller.scrollWidth-Ue(t),e.scrollLeft)),n.scrollbars.setScrollLeft(r.scrollLeft),n.scroller.scrollLeft=r.scrollLeft,_(t)),e.scrollToPos){var i=zn(t,me(r,e.scrollToPos.from),me(r,e.scrollToPos.to),e.scrollToPos.margin);e.scrollToPos.isCursor&&t.state.focused&&An(t,i)}var o=e.maybeHiddenMarkers,a=e.maybeUnhiddenMarkers;if(o)for(var l=0;l<o.length;++l)o[l].lines.length||Sa(o[l],"hide");if(a)for(var l=0;l<a.length;++l)a[l].lines.length&&Sa(a[l],"unhide");n.wrapper.offsetHeight&&(r.scrollTop=t.display.scroller.scrollTop),e.changeObjs&&Sa(t,"changes",t,e.changeObjs),e.update&&e.update.finish()}function Lt(e,t){if(e.curOp)return t();yt(e);try{return t()}finally{xt(e)}}function Tt(e,t){return function(){if(e.curOp)return t.apply(e,arguments);yt(e);try{return t.apply(e,arguments)}finally{xt(e)}}}function At(e){return function(){if(this.curOp)return e.apply(this,arguments);yt(this);try{return e.apply(this,arguments)}finally{xt(this)}}}function zt(e){return function(){var t=this.cm;if(!t||t.curOp)return e.apply(this,arguments);yt(t);try{return e.apply(this,arguments)}finally{xt(t)}}}function Et(e,t,n){this.line=t,this.rest=mr(t),this.size=this.rest?Yr(Ti(this.rest))-n+1:1,this.node=this.text=null,this.hidden=yr(e,t)}function Ot(e,t,n){for(var r,i=[],o=t;n>o;o=r){var a=new Et(e.doc,Gr(e.doc,o),o);r=o+a.size,i.push(a)}return i}function qt(e,t,n,r){null==t&&(t=e.doc.first),null==n&&(n=e.doc.first+e.doc.size),r||(r=0);var i=e.display;if(r&&n<i.viewTo&&(null==i.updateLineNumbers||i.updateLineNumbers>t)&&(i.updateLineNumbers=t),e.curOp.viewChanged=!0,t>=i.viewTo)zo&&gr(e.doc,t)<i.viewTo&&It(e);else if(n<=i.viewFrom)zo&&vr(e.doc,n+r)>i.viewFrom?It(e):(i.viewFrom+=r,i.viewTo+=r);else if(t<=i.viewFrom&&n>=i.viewTo)It(e);else if(t<=i.viewFrom){var o=Dt(e,n,n+r,1);o?(i.view=i.view.slice(o.index),i.viewFrom=o.lineN,i.viewTo+=r):It(e)}else if(n>=i.viewTo){var o=Dt(e,t,t,-1);o?(i.view=i.view.slice(0,o.index),i.viewTo=o.lineN):It(e)}else{var a=Dt(e,t,t,-1),l=Dt(e,n,n+r,1);a&&l?(i.view=i.view.slice(0,a.index).concat(Ot(e,a.lineN,l.lineN)).concat(i.view.slice(l.index)),i.viewTo+=r):It(e)}var s=i.externalMeasured;s&&(n<s.lineN?s.lineN+=r:t<s.lineN+s.size&&(i.externalMeasured=null))}function Nt(e,t,n){e.curOp.viewChanged=!0;var r=e.display,i=e.display.externalMeasured;if(i&&t>=i.lineN&&t<i.lineN+i.size&&(r.externalMeasured=null),!(t<r.viewFrom||t>=r.viewTo)){var o=r.view[Pt(e,t)];if(null!=o.node){var a=o.changes||(o.changes=[]);-1==Ai(a,n)&&a.push(n)}}}function It(e){e.display.viewFrom=e.display.viewTo=e.doc.first,e.display.view=[],e.display.viewOffset=0}function Pt(e,t){if(t>=e.display.viewTo)return null;if(t-=e.display.viewFrom,0>t)return null;for(var n=e.display.view,r=0;r<n.length;r++)if(t-=n[r].size,0>t)return r}function Dt(e,t,n,r){var i,o=Pt(e,t),a=e.display.view;if(!zo||n==e.doc.first+e.doc.size)return{index:o,lineN:n};for(var l=0,s=e.display.viewFrom;o>l;l++)s+=a[l].size;if(s!=t){if(r>0){if(o==a.length-1)return null;i=s+a[o].size-t,o++}else i=s-t;t+=i,n+=i}for(;gr(e.doc,n)!=n;){if(o==(0>r?0:a.length-1))return null;n+=r*a[o-(0>r?1:0)].size,o+=r}return{index:o,lineN:n}}function jt(e,t,n){var r=e.display,i=r.view;0==i.length||t>=r.viewTo||n<=r.viewFrom?(r.view=Ot(e,t,n),r.viewFrom=t):(r.viewFrom>t?r.view=Ot(e,t,r.viewFrom).concat(r.view):r.viewFrom<t&&(r.view=r.view.slice(Pt(e,t))),r.viewFrom=t,r.viewTo<n?r.view=r.view.concat(Ot(e,r.viewTo,n)):r.viewTo>n&&(r.view=r.view.slice(0,Pt(e,n)))),r.viewTo=n}function Rt(e){for(var t=e.display.view,n=0,r=0;r<t.length;r++){var i=t[r];i.hidden||i.node&&!i.changes||++n}return n}function Wt(e){function t(){i.activeTouch&&(o=setTimeout(function(){i.activeTouch=null},1e3),a=i.activeTouch,a.end=+new Date)}function n(e){if(1!=e.touches.length)return!1;var t=e.touches[0];return t.radiusX<=1&&t.radiusY<=1}function r(e,t){if(null==t.left)return!0;var n=t.left-e.left,r=t.top-e.top;return n*n+r*r>400}var i=e.display;wa(i.scroller,"mousedown",Tt(e,Ut)),po&&11>ho?wa(i.scroller,"dblclick",Tt(e,function(t){if(!_i(e,t)){var n=Bt(e,t);if(n&&!Zt(e,t)&&!$t(e.display,t)){xa(t);var r=e.findWordAt(n);xe(e.doc,r.anchor,r.head)}}})):wa(i.scroller,"dblclick",function(t){_i(e,t)||xa(t)}),To||wa(i.scroller,"contextmenu",function(t){mn(e,t)});var o,a={end:0};wa(i.scroller,"touchstart",function(e){if(!n(e)){clearTimeout(o);var t=+new Date;i.activeTouch={start:t,moved:!1,prev:t-a.end<=300?a:null},1==e.touches.length&&(i.activeTouch.left=e.touches[0].pageX,i.activeTouch.top=e.touches[0].pageY)}}),wa(i.scroller,"touchmove",function(){i.activeTouch&&(i.activeTouch.moved=!0)}),wa(i.scroller,"touchend",function(n){var o=i.activeTouch;if(o&&!$t(i,n)&&null!=o.left&&!o.moved&&new Date-o.start<300){var a,l=e.coordsChar(i.activeTouch,"page");a=!o.prev||r(o,o.prev)?new fe(l,l):!o.prev.prev||r(o,o.prev.prev)?e.findWordAt(l):new fe(Eo(l.line,0),me(e.doc,Eo(l.line+1,0))),e.setSelection(a.anchor,a.head),e.focus(),xa(n)}t()}),wa(i.scroller,"touchcancel",t),wa(i.scroller,"scroll",function(){i.scroller.clientHeight&&(Jt(e,i.scroller.scrollTop),en(e,i.scroller.scrollLeft,!0),Sa(e,"scroll",e))}),wa(i.scroller,"mousewheel",function(t){tn(e,t)}),wa(i.scroller,"DOMMouseScroll",function(t){tn(e,t)}),wa(i.wrapper,"scroll",function(){i.wrapper.scrollTop=i.wrapper.scrollLeft=0}),i.dragFunctions={simple:function(t){_i(e,t)||ka(t)},start:function(t){Qt(e,t)},drop:Tt(e,Yt)};var l=i.input.getField();wa(l,"keyup",function(t){un.call(e,t)}),wa(l,"keydown",Tt(e,sn)),wa(l,"keypress",Tt(e,fn)),wa(l,"focus",Ni(pn,e)),wa(l,"blur",Ni(hn,e))}function Ft(t,n,r){var i=r&&r!=e.Init;if(!n!=!i){var o=t.display.dragFunctions,a=n?wa:Ca;a(t.display.scroller,"dragstart",o.start),a(t.display.scroller,"dragenter",o.simple),a(t.display.scroller,"dragover",o.simple),a(t.display.scroller,"drop",o.drop)}}function Ht(e){var t=e.display;(t.lastWrapHeight!=t.wrapper.clientHeight||t.lastWrapWidth!=t.wrapper.clientWidth)&&(t.cachedCharWidth=t.cachedTextHeight=t.cachedPaddingH=null,t.scrollbarsClipped=!1,e.setSize())}function $t(e,t){for(var n=vi(t);n!=e.wrapper;n=n.parentNode)if(!n||1==n.nodeType&&"true"==n.getAttribute("cm-ignore-events")||n.parentNode==e.sizer&&n!=e.mover)return!0}function Bt(e,t,n,r){var i=e.display;if(!n&&"true"==vi(t).getAttribute("cm-not-content"))return null;var o,a,l=i.lineSpace.getBoundingClientRect();try{o=t.clientX-l.left,a=t.clientY-l.top}catch(t){return null}var s,c=ht(e,o,a);if(r&&1==c.xRel&&(s=Gr(e.doc,c.line).text).length==c.ch){var u=Oa(s,s.length,e.options.tabSize)-s.length;c=Eo(c.line,Math.max(0,Math.round((o-$e(e.display).left)/vt(e.display))-u))}return c}function Ut(e){var t=this,n=t.display;if(!(n.activeTouch&&n.input.supportsTouch()||_i(t,e))){if(n.shift=e.shiftKey,$t(n,e))return void(mo||(n.scroller.draggable=!1,setTimeout(function(){n.scroller.draggable=!0},100)));if(!Zt(t,e)){var r=Bt(t,e);switch(window.focus(),yi(e)){case 1:r?Vt(t,e,r):vi(e)==n.scroller&&xa(e);break;case 2:mo&&(t.state.lastMiddleDown=+new Date),r&&xe(t.doc,r),setTimeout(function(){n.input.focus()},20),xa(e);break;case 3:To?mn(t,e):dn(t)}}}}function Vt(e,t,n){po?setTimeout(Ni(Y,e),0):e.curOp.focus=Fi();var r,i=+new Date;Po&&Po.time>i-400&&0==Oo(Po.pos,n)?r="triple":Io&&Io.time>i-400&&0==Oo(Io.pos,n)?(r="double",Po={time:i,pos:n}):(r="single",Io={time:i,pos:n});var o,a=e.doc.sel,l=Co?t.metaKey:t.ctrlKey;e.options.dragDrop&&Ua&&!Q(e)&&"single"==r&&(o=a.contains(n))>-1&&!a.ranges[o].empty()?Gt(e,t,n,l):Kt(e,t,n,r,l)}function Gt(e,t,n,r){var i=e.display,o=+new Date,a=Tt(e,function(l){mo&&(i.scroller.draggable=!1),e.state.draggingText=!1,Ca(document,"mouseup",a),Ca(i.scroller,"drop",a),Math.abs(t.clientX-l.clientX)+Math.abs(t.clientY-l.clientY)<10&&(xa(l),!r&&+new Date-200<o&&xe(e.doc,n),mo||po&&9==ho?setTimeout(function(){document.body.focus(),i.input.focus()},20):i.input.focus())});mo&&(i.scroller.draggable=!0),e.state.draggingText=a,i.scroller.dragDrop&&i.scroller.dragDrop(),wa(document,"mouseup",a),wa(i.scroller,"drop",a)}function Kt(e,t,n,r,i){function o(t){if(0!=Oo(g,t))if(g=t,"rect"==r){for(var i=[],o=e.options.tabSize,a=Oa(Gr(c,n.line).text,n.ch,o),l=Oa(Gr(c,t.line).text,t.ch,o),s=Math.min(a,l),p=Math.max(a,l),h=Math.min(n.line,t.line),m=Math.min(e.lastLine(),Math.max(n.line,t.line));m>=h;h++){var v=Gr(c,h).text,y=Mi(v,s,o);s==p?i.push(new fe(Eo(h,y),Eo(h,y))):v.length>y&&i.push(new fe(Eo(h,y),Eo(h,Mi(v,p,o))))}i.length||i.push(new fe(n,n)),Me(c,de(d.ranges.slice(0,f).concat(i),f),{origin:"*mouse",scroll:!1}),e.scrollIntoView(t)}else{var b=u,x=b.anchor,_=t;if("single"!=r){if("double"==r)var k=e.findWordAt(t);else var k=new fe(Eo(t.line,0),me(c,Eo(t.line+1,0)));Oo(k.anchor,x)>0?(_=k.head,x=Z(b.from(),k.anchor)):(_=k.anchor,x=X(b.to(),k.head))}var i=d.ranges.slice(0);i[f]=new fe(me(c,x),_),Me(c,de(i,f),za)}}function a(t){var n=++y,i=Bt(e,t,!0,"rect"==r);if(i)if(0!=Oo(i,g)){e.curOp.focus=Fi(),o(i);var l=x(s,c);(i.line>=l.to||i.line<l.from)&&setTimeout(Tt(e,function(){y==n&&a(t)}),150)}else{var u=t.clientY<v.top?-20:t.clientY>v.bottom?20:0;u&&setTimeout(Tt(e,function(){y==n&&(s.scroller.scrollTop+=u,a(t))}),50)}}function l(e){y=1/0,xa(e),s.input.focus(),Ca(document,"mousemove",b),Ca(document,"mouseup",_),c.history.lastSelOrigin=null}var s=e.display,c=e.doc;xa(t);var u,f,d=c.sel,p=d.ranges;if(i&&!t.shiftKey?(f=c.sel.contains(n),u=f>-1?p[f]:new fe(n,n)):(u=c.sel.primary(),f=c.sel.primIndex),t.altKey)r="rect",i||(u=new fe(n,n)),n=Bt(e,t,!0,!0),f=-1;else if("double"==r){var h=e.findWordAt(n);u=e.display.shift||c.extend?be(c,u,h.anchor,h.head):h}else if("triple"==r){var m=new fe(Eo(n.line,0),me(c,Eo(n.line+1,0)));u=e.display.shift||c.extend?be(c,u,m.anchor,m.head):m}else u=be(c,u,n);i?-1==f?(f=p.length,Me(c,de(p.concat([u]),f),{scroll:!1,origin:"*mouse"})):p.length>1&&p[f].empty()&&"single"==r&&!t.shiftKey?(Me(c,de(p.slice(0,f).concat(p.slice(f+1)),0)),d=c.sel):ke(c,f,u,za):(f=0,Me(c,new ue([u],0),za),d=c.sel);var g=n,v=s.wrapper.getBoundingClientRect(),y=0,b=Tt(e,function(e){yi(e)?a(e):l(e)}),_=Tt(e,l);wa(document,"mousemove",b),wa(document,"mouseup",_)}function Xt(e,t,n,r,i){try{var o=t.clientX,a=t.clientY}catch(t){return!1}if(o>=Math.floor(e.display.gutters.getBoundingClientRect().right))return!1;r&&xa(t);var l=e.display,s=l.lineDiv.getBoundingClientRect();if(a>s.bottom||!wi(e,n))return gi(t);a-=s.top-l.viewOffset;for(var c=0;c<e.options.gutters.length;++c){var u=l.gutters.childNodes[c];if(u&&u.getBoundingClientRect().right>=o){var f=Qr(e.doc,a),d=e.options.gutters[c];return i(e,n,e,f,d,t),gi(t)}}}function Zt(e,t){return Xt(e,t,"gutterClick",!0,bi)}function Yt(e){var t=this;if(!_i(t,e)&&!$t(t.display,e)){xa(e),po&&(Wo=+new Date);var n=Bt(t,e,!0),r=e.dataTransfer.files;if(n&&!Q(t))if(r&&r.length&&window.FileReader&&window.File)for(var i=r.length,o=Array(i),a=0,l=function(e,r){var l=new FileReader;l.onload=Tt(t,function(){if(o[r]=l.result,++a==i){n=me(t.doc,n);var e={from:n,to:n,text:Va(o.join("\n")),origin:"paste"};kn(t.doc,e),Se(t.doc,pe(n,Vo(e)))}}),l.readAsText(e)},s=0;i>s;++s)l(r[s],s);else{if(t.state.draggingText&&t.doc.sel.contains(n)>-1)return t.state.draggingText(e),void setTimeout(function(){t.display.input.focus()},20);try{var o=e.dataTransfer.getData("Text");if(o){if(t.state.draggingText&&!(Co?e.altKey:e.ctrlKey))var c=t.listSelections();if(Le(t.doc,pe(n,n)),c)for(var s=0;s<c.length;++s)Tn(t.doc,"",c[s].anchor,c[s].head,"drag");t.replaceSelection(o,"around","paste"),t.display.input.focus()}}catch(e){}}}}function Qt(e,t){if(po&&(!e.state.draggingText||+new Date-Wo<100))return void ka(t);if(!_i(e,t)&&!$t(e.display,t)&&(t.dataTransfer.setData("Text",e.getSelection()),t.dataTransfer.setDragImage&&!bo)){var n=ji("img",null,null,"position: fixed; left: 0; top: 0;");n.src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==",yo&&(n.width=n.height=1,e.display.wrapper.appendChild(n),n._top=n.offsetTop),t.dataTransfer.setDragImage(n,0,0),yo&&n.parentNode.removeChild(n)}}function Jt(e,t){Math.abs(e.doc.scrollTop-t)<2||(e.doc.scrollTop=t,co||A(e,{top:t}),e.display.scroller.scrollTop!=t&&(e.display.scroller.scrollTop=t),e.display.scrollbars.setScrollTop(t),co&&A(e),De(e,100))}function en(e,t,n){(n?t==e.doc.scrollLeft:Math.abs(e.doc.scrollLeft-t)<2)||(t=Math.min(t,e.display.scroller.scrollWidth-e.display.scroller.clientWidth),e.doc.scrollLeft=t,_(e),e.display.scroller.scrollLeft!=t&&(e.display.scroller.scrollLeft=t),e.display.scrollbars.setScrollLeft(t))}function tn(e,t){var n=$o(t),r=n.x,i=n.y,o=e.display,a=o.scroller;if(r&&a.scrollWidth>a.clientWidth||i&&a.scrollHeight>a.clientHeight){if(i&&Co&&mo)e:for(var l=t.target,s=o.view;l!=a;l=l.parentNode)for(var c=0;c<s.length;c++)if(s[c].node==l){e.display.currentWheelTarget=l;break e}if(r&&!co&&!yo&&null!=Ho)return i&&Jt(e,Math.max(0,Math.min(a.scrollTop+i*Ho,a.scrollHeight-a.clientHeight))),en(e,Math.max(0,Math.min(a.scrollLeft+r*Ho,a.scrollWidth-a.clientWidth))),xa(t),void(o.wheelStartX=null);if(i&&null!=Ho){var u=i*Ho,f=e.doc.scrollTop,d=f+o.wrapper.clientHeight;0>u?f=Math.max(0,f+u-50):d=Math.min(e.doc.height,d+u+50),A(e,{top:f,bottom:d})}20>Fo&&(null==o.wheelStartX?(o.wheelStartX=a.scrollLeft,o.wheelStartY=a.scrollTop,o.wheelDX=r,o.wheelDY=i,setTimeout(function(){if(null!=o.wheelStartX){var e=a.scrollLeft-o.wheelStartX,t=a.scrollTop-o.wheelStartY,n=t&&o.wheelDY&&t/o.wheelDY||e&&o.wheelDX&&e/o.wheelDX;o.wheelStartX=o.wheelStartY=null,n&&(Ho=(Ho*Fo+n)/(Fo+1),++Fo)}},200)):(o.wheelDX+=r,o.wheelDY+=i))}}function nn(e,t,n){if("string"==typeof t&&(t=ra[t],!t))return!1;e.display.input.ensurePolled();var r=e.display.shift,i=!1;try{Q(e)&&(e.state.suppressEdits=!0),n&&(e.display.shift=!1),i=t(e)!=Ta}finally{e.display.shift=r,e.state.suppressEdits=!1}return i}function rn(e,t,n){for(var r=0;r<e.state.keyMaps.length;r++){var i=oa(t,e.state.keyMaps[r],n,e);if(i)return i}return e.options.extraKeys&&oa(t,e.options.extraKeys,n,e)||oa(t,e.options.keyMap,n,e)}function on(e,t,n,r){var i=e.state.keySeq;if(i){if(aa(t))return"handled";Bo.set(50,function(){e.state.keySeq==i&&(e.state.keySeq=null,e.display.input.reset())}),t=i+" "+t}var o=rn(e,t,r);return"multi"==o&&(e.state.keySeq=t),"handled"==o&&bi(e,"keyHandled",e,t,n),("handled"==o||"multi"==o)&&(xa(n),Pe(e)),i&&!o&&/\'$/.test(t)?(xa(n),!0):!!o}function an(e,t){var n=la(t,!0);return n?t.shiftKey&&!e.state.keySeq?on(e,"Shift-"+n,t,function(t){return nn(e,t,!0)})||on(e,n,t,function(t){return("string"==typeof t?/^go[A-Z]/.test(t):t.motion)?nn(e,t):void 0}):on(e,n,t,function(t){return nn(e,t)}):!1}function ln(e,t,n){return on(e,"'"+n+"'",t,function(t){return nn(e,t,!0)})}function sn(e){var t=this;if(t.curOp.focus=Fi(),!_i(t,e)){po&&11>ho&&27==e.keyCode&&(e.returnValue=!1);var n=e.keyCode;t.display.shift=16==n||e.shiftKey;var r=an(t,e);yo&&(Uo=r?n:null,!r&&88==n&&!Ka&&(Co?e.metaKey:e.ctrlKey)&&t.replaceSelection("",null,"cut")),18!=n||/\bCodeMirror-crosshair\b/.test(t.display.lineDiv.className)||cn(t)}}function cn(e){function t(e){18!=e.keyCode&&e.altKey||(Ha(n,"CodeMirror-crosshair"),Ca(document,"keyup",t),Ca(document,"mouseover",t))}var n=e.display.lineDiv;$a(n,"CodeMirror-crosshair"),wa(document,"keyup",t),wa(document,"mouseover",t)}function un(e){16==e.keyCode&&(this.doc.sel.shift=!1),_i(this,e)}function fn(e){var t=this;if(!($t(t.display,e)||_i(t,e)||e.ctrlKey&&!e.altKey||Co&&e.metaKey)){var n=e.keyCode,r=e.charCode;if(yo&&n==Uo)return Uo=null,void xa(e);if(!yo||e.which&&!(e.which<10)||!an(t,e)){var i=String.fromCharCode(null==r?n:r);ln(t,e,i)||t.display.input.onKeyPress(e)}}}function dn(e){e.state.delayingBlurEvent=!0,setTimeout(function(){e.state.delayingBlurEvent&&(e.state.delayingBlurEvent=!1,hn(e))},100)}function pn(e){e.state.delayingBlurEvent&&(e.state.delayingBlurEvent=!1),"nocursor"!=e.options.readOnly&&(e.state.focused||(Sa(e,"focus",e),e.state.focused=!0,$a(e.display.wrapper,"CodeMirror-focused"),e.curOp||e.display.selForContextMenu==e.doc.sel||(e.display.input.reset(),mo&&setTimeout(function(){e.display.input.reset(!0)},20)),e.display.input.receivedFocus()),Pe(e))}function hn(e){e.state.delayingBlurEvent||(e.state.focused&&(Sa(e,"blur",e),e.state.focused=!1,Ha(e.display.wrapper,"CodeMirror-focused")),clearInterval(e.display.blinker),setTimeout(function(){e.state.focused||(e.display.shift=!1)},150))}function mn(e,t){$t(e.display,t)||gn(e,t)||e.display.input.onContextMenu(t)}function gn(e,t){return wi(e,"gutterContextMenu")?Xt(e,t,"gutterContextMenu",!1,Sa):!1}function vn(e,t){if(Oo(e,t.from)<0)return e;if(Oo(e,t.to)<=0)return Vo(t);var n=e.line+t.text.length-(t.to.line-t.from.line)-1,r=e.ch;return e.line==t.to.line&&(r+=Vo(t).ch-t.to.ch),Eo(n,r)}function yn(e,t){for(var n=[],r=0;r<e.sel.ranges.length;r++){var i=e.sel.ranges[r];n.push(new fe(vn(i.anchor,t),vn(i.head,t)))}return de(n,e.sel.primIndex)}function bn(e,t,n){return e.line==t.line?Eo(n.line,e.ch-t.ch+n.ch):Eo(n.line+(e.line-t.line),e.ch)}function xn(e,t,n){for(var r=[],i=Eo(e.first,0),o=i,a=0;a<t.length;a++){var l=t[a],s=bn(l.from,i,o),c=bn(Vo(l),i,o);if(i=l.to,o=c,"around"==n){var u=e.sel.ranges[a],f=Oo(u.head,u.anchor)<0;r[a]=new fe(f?c:s,f?s:c)}else r[a]=new fe(s,s)}return new ue(r,e.sel.primIndex)}function _n(e,t,n){var r={canceled:!1,from:t.from,to:t.to,text:t.text,origin:t.origin,cancel:function(){this.canceled=!0}};return n&&(r.update=function(t,n,r,i){t&&(this.from=me(e,t)),n&&(this.to=me(e,n)),r&&(this.text=r),void 0!==i&&(this.origin=i)}),Sa(e,"beforeChange",e,r),e.cm&&Sa(e.cm,"beforeChange",e.cm,r),r.canceled?null:{from:r.from,to:r.to,text:r.text,origin:r.origin}}function kn(e,t,n){if(e.cm){if(!e.cm.curOp)return Tt(e.cm,kn)(e,t,n);if(e.cm.state.suppressEdits)return}if(!(wi(e,"beforeChange")||e.cm&&wi(e.cm,"beforeChange"))||(t=_n(e,t,!0))){var r=Ao&&!n&&ir(e,t.from,t.to);if(r)for(var i=r.length-1;i>=0;--i)wn(e,{from:r[i].from,to:r[i].to,text:i?[""]:t.text});else wn(e,t)}}function wn(e,t){if(1!=t.text.length||""!=t.text[0]||0!=Oo(t.from,t.to)){var n=yn(e,t);oi(e,t,n,e.cm?e.cm.curOp.id:0/0),Mn(e,t,n,tr(e,t));var r=[];Ur(e,function(e,n){n||-1!=Ai(r,e.history)||(mi(e.history,t),r.push(e.history)),Mn(e,t,null,tr(e,t))})}}function Cn(e,t,n){if(!e.cm||!e.cm.state.suppressEdits){for(var r,i=e.history,o=e.sel,a="undo"==t?i.done:i.undone,l="undo"==t?i.undone:i.done,s=0;s<a.length&&(r=a[s],n?!r.ranges||r.equals(e.sel):r.ranges);s++);if(s!=a.length){for(i.lastOrigin=i.lastSelOrigin=null;r=a.pop(),r.ranges;){if(si(r,l),n&&!r.equals(e.sel))return void Me(e,r,{clearRedo:!1});o=r}var c=[];si(o,l),l.push({changes:c,generation:i.generation}),i.generation=r.generation||++i.maxGeneration;for(var u=wi(e,"beforeChange")||e.cm&&wi(e.cm,"beforeChange"),s=r.changes.length-1;s>=0;--s){var f=r.changes[s];if(f.origin=t,u&&!_n(e,f,!1))return void(a.length=0);c.push(ni(e,f));var d=s?yn(e,f):Ti(a);Mn(e,f,d,rr(e,f)),!s&&e.cm&&e.cm.scrollIntoView({from:f.from,to:Vo(f)});var p=[];Ur(e,function(e,t){t||-1!=Ai(p,e.history)||(mi(e.history,f),p.push(e.history)),Mn(e,f,null,rr(e,f))})}}}}function Sn(e,t){if(0!=t&&(e.first+=t,e.sel=new ue(zi(e.sel.ranges,function(e){return new fe(Eo(e.anchor.line+t,e.anchor.ch),Eo(e.head.line+t,e.head.ch))}),e.sel.primIndex),e.cm)){qt(e.cm,e.first,e.first-t,t);for(var n=e.cm.display,r=n.viewFrom;r<n.viewTo;r++)Nt(e.cm,r,"gutter")}}function Mn(e,t,n,r){if(e.cm&&!e.cm.curOp)return Tt(e.cm,Mn)(e,t,n,r);if(t.to.line<e.first)return void Sn(e,t.text.length-1-(t.to.line-t.from.line));if(!(t.from.line>e.lastLine())){if(t.from.line<e.first){var i=t.text.length-1-(e.first-t.from.line);Sn(e,i),t={from:Eo(e.first,0),to:Eo(t.to.line+i,t.to.ch),text:[Ti(t.text)],origin:t.origin}}var o=e.lastLine();t.to.line>o&&(t={from:t.from,to:Eo(o,Gr(e,o).text.length),text:[t.text[0]],origin:t.origin}),t.removed=Kr(e,t.from,t.to),n||(n=yn(e,t)),e.cm?Ln(e.cm,t,r):Hr(e,t,r),Le(e,n,Aa)}}function Ln(e,t,n){var r=e.doc,i=e.display,a=t.from,l=t.to,s=!1,c=a.line;e.options.lineWrapping||(c=Yr(hr(Gr(r,a.line))),r.iter(c,l.line+1,function(e){return e==i.maxLine?(s=!0,!0):void 0})),r.sel.contains(t.from,t.to)>-1&&ki(e),Hr(r,t,n,o(e)),e.options.lineWrapping||(r.iter(c,a.line+t.text.length,function(e){var t=f(e);t>i.maxLineLength&&(i.maxLine=e,i.maxLineLength=t,i.maxLineChanged=!0,s=!1)}),s&&(e.curOp.updateMaxLine=!0)),r.frontier=Math.min(r.frontier,a.line),De(e,400);var u=t.text.length-(l.line-a.line)-1;t.full?qt(e):a.line!=l.line||1!=t.text.length||Fr(e.doc,t)?qt(e,a.line,l.line+1,u):Nt(e,a.line,"text");var d=wi(e,"changes"),p=wi(e,"change");if(p||d){var h={from:a,to:l,text:t.text,removed:t.removed,origin:t.origin};p&&bi(e,"change",e,h),d&&(e.curOp.changeObjs||(e.curOp.changeObjs=[])).push(h)}e.display.selForContextMenu=null}function Tn(e,t,n,r,i){if(r||(r=n),Oo(r,n)<0){var o=r;r=n,n=o}"string"==typeof t&&(t=Va(t)),kn(e,{from:n,to:r,text:t,origin:i})}function An(e,t){if(!_i(e,"scrollCursorIntoView")){var n=e.display,r=n.sizer.getBoundingClientRect(),i=null;if(t.top+r.top<0?i=!0:t.bottom+r.top>(window.innerHeight||document.documentElement.clientHeight)&&(i=!1),null!=i&&!_o){var o=ji("div","​",null,"position: absolute; top: "+(t.top-n.viewOffset-Fe(e.display))+"px; height: "+(t.bottom-t.top+Be(e)+n.barHeight)+"px; left: "+t.left+"px; width: 2px;");e.display.lineSpace.appendChild(o),o.scrollIntoView(i),e.display.lineSpace.removeChild(o)}}}function zn(e,t,n,r){null==r&&(r=0);for(var i=0;5>i;i++){var o=!1,a=ft(e,t),l=n&&n!=t?ft(e,n):a,s=On(e,Math.min(a.left,l.left),Math.min(a.top,l.top)-r,Math.max(a.left,l.left),Math.max(a.bottom,l.bottom)+r),c=e.doc.scrollTop,u=e.doc.scrollLeft;if(null!=s.scrollTop&&(Jt(e,s.scrollTop),Math.abs(e.doc.scrollTop-c)>1&&(o=!0)),null!=s.scrollLeft&&(en(e,s.scrollLeft),Math.abs(e.doc.scrollLeft-u)>1&&(o=!0)),!o)break}return a}function En(e,t,n,r,i){var o=On(e,t,n,r,i);null!=o.scrollTop&&Jt(e,o.scrollTop),null!=o.scrollLeft&&en(e,o.scrollLeft)}function On(e,t,n,r,i){var o=e.display,a=gt(e.display);0>n&&(n=0);var l=e.curOp&&null!=e.curOp.scrollTop?e.curOp.scrollTop:o.scroller.scrollTop,s=Ve(e),c={};i-n>s&&(i=n+s);var u=e.doc.height+He(o),f=a>n,d=i>u-a;if(l>n)c.scrollTop=f?0:n;else if(i>l+s){var p=Math.min(n,(d?u:i)-s);p!=l&&(c.scrollTop=p)}var h=e.curOp&&null!=e.curOp.scrollLeft?e.curOp.scrollLeft:o.scroller.scrollLeft,m=Ue(e)-(e.options.fixedGutter?o.gutters.offsetWidth:0),g=r-t>m;return g&&(r=t+m),10>t?c.scrollLeft=0:h>t?c.scrollLeft=Math.max(0,t-(g?0:10)):r>m+h-3&&(c.scrollLeft=r+(g?0:10)-m),c}function qn(e,t,n){(null!=t||null!=n)&&In(e),null!=t&&(e.curOp.scrollLeft=(null==e.curOp.scrollLeft?e.doc.scrollLeft:e.curOp.scrollLeft)+t),null!=n&&(e.curOp.scrollTop=(null==e.curOp.scrollTop?e.doc.scrollTop:e.curOp.scrollTop)+n)}function Nn(e){In(e);var t=e.getCursor(),n=t,r=t;e.options.lineWrapping||(n=t.ch?Eo(t.line,t.ch-1):t,r=Eo(t.line,t.ch+1)),e.curOp.scrollToPos={from:n,to:r,margin:e.options.cursorScrollMargin,isCursor:!0}}function In(e){var t=e.curOp.scrollToPos;if(t){e.curOp.scrollToPos=null;var n=dt(e,t.from),r=dt(e,t.to),i=On(e,Math.min(n.left,r.left),Math.min(n.top,r.top)-t.margin,Math.max(n.right,r.right),Math.max(n.bottom,r.bottom)+t.margin);e.scrollTo(i.scrollLeft,i.scrollTop)}}function Pn(e,t,n,r){var i,o=e.doc;null==n&&(n="add"),"smart"==n&&(o.mode.indent?i=We(e,t):n="prev");var a=e.options.tabSize,l=Gr(o,t),s=Oa(l.text,null,a);l.stateAfter&&(l.stateAfter=null);var c,u=l.text.match(/^\s*/)[0];if(r||/\S/.test(l.text)){if("smart"==n&&(c=o.mode.indent(i,l.text.slice(u.length),l.text),c==Ta||c>150)){if(!r)return;n="prev"}}else c=0,n="not";"prev"==n?c=t>o.first?Oa(Gr(o,t-1).text,null,a):0:"add"==n?c=s+e.options.indentUnit:"subtract"==n?c=s-e.options.indentUnit:"number"==typeof n&&(c=s+n),c=Math.max(0,c);var f="",d=0;if(e.options.indentWithTabs)for(var p=Math.floor(c/a);p;--p)d+=a,f+="	";if(c>d&&(f+=Li(c-d)),f!=u)return Tn(o,f,Eo(t,0),Eo(t,u.length),"+input"),l.stateAfter=null,!0;for(var p=0;p<o.sel.ranges.length;p++){var h=o.sel.ranges[p];if(h.head.line==t&&h.head.ch<u.length){var d=Eo(t,u.length);ke(o,p,new fe(d,d));break}}}function Dn(e,t,n,r){var i=t,o=t;return"number"==typeof t?o=Gr(e,he(e,t)):i=Yr(t),null==i?null:(r(o,i)&&e.cm&&Nt(e.cm,i,n),o)}function jn(e,t){for(var n=e.doc.sel.ranges,r=[],i=0;i<n.length;i++){for(var o=t(n[i]);r.length&&Oo(o.from,Ti(r).to)<=0;){var a=r.pop();if(Oo(a.from,o.from)<0){o.from=a.from;break}}r.push(o)}Lt(e,function(){for(var t=r.length-1;t>=0;t--)Tn(e.doc,"",r[t].from,r[t].to,"+delete");Nn(e)})}function Rn(e,t,n,r,i){function o(){var t=l+n;return t<e.first||t>=e.first+e.size?f=!1:(l=t,u=Gr(e,t))}function a(e){var t=(i?lo:so)(u,s,n,!0);if(null==t){if(e||!o())return f=!1;s=i?(0>n?eo:Ji)(u):0>n?u.text.length:0}else s=t;return!0}var l=t.line,s=t.ch,c=n,u=Gr(e,l),f=!0;if("char"==r)a();else if("column"==r)a(!0);else if("word"==r||"group"==r)for(var d=null,p="group"==r,h=e.cm&&e.cm.getHelper(t,"wordChars"),m=!0;!(0>n)||a(!m);m=!1){var g=u.text.charAt(s)||"\n",v=Ii(g,h)?"w":p&&"\n"==g?"n":!p||/\s/.test(g)?null:"p";
 
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Bn(e,t,n,r,i){if(r&&r.shared)return Un(e,t,n,r,i);if(e.cm&&!e.cm.curOp)return Tt(e.cm,Bn)(e,t,n,r,i);var o=new ua(e,i),a=Oo(t,n);if(r&&qi(r,o,!1),a>0||0==a&&o.clearWhenEmpty!==!1)return o;if(o.replacedWith&&(o.collapsed=!0,o.widgetNode=ji("span",[o.replacedWith],"CodeMirror-widget"),r.handleMouseEvents||o.widgetNode.setAttribute("cm-ignore-events","true"),r.insertLeft&&(o.widgetNode.insertLeft=!0)),o.collapsed){if(pr(e,t.line,t,n,o)||t.line!=n.line&&pr(e,n.line,t,n,o))throw new Error("Inserting collapsed marker partially overlapping an existing one");zo=!0}o.addToHistory&&oi(e,{from:t,to:n,origin:"markText"},e.sel,0/0);var l,s=t.line,c=e.cm;if(e.iter(s,n.line+1,function(e){c&&o.collapsed&&!c.options.lineWrapping&&hr(e)==c.display.maxLine&&(l=!0),o.collapsed&&s!=t.line&&Zr(e,0),Qn(e,new Xn(o,s==t.line?t.ch:null,s==n.line?n.ch:null)),++s}),o.collapsed&&e.iter(t.line,n.line+1,function(t){yr(e,t)&&Zr(t,0)}),o.clearOnEnter&&wa(o,"beforeCursorEnter",function(){o.clear()}),o.readOnly&&(Ao=!0,(e.history.done.length||e.history.undone.length)&&e.clearHistory()),o.collapsed&&(o.id=++ca,o.atomic=!0),c){if(l&&(c.curOp.updateMaxLine=!0),o.collapsed)qt(c,t.line,n.line+1);else if(o.className||o.title||o.startStyle||o.endStyle||o.css)for(var u=t.line;u<=n.line;u++)Nt(c,u,"text");o.atomic&&Ae(c.doc),bi(c,"markerAdded",c,o)}return o}function Un(e,t,n,r,i){r=qi(r),r.shared=!1;var o=[Bn(e,t,n,r,i)],a=o[0],l=r.widgetNode;return Ur(e,function(e){l&&(r.widgetNode=l.cloneNode(!0)),o.push(Bn(e,me(e,t),me(e,n),r,i));for(var s=0;s<e.linked.length;++s)if(e.linked[s].isParent)return;a=Ti(o)}),new fa(o,a)}function Vn(e){return e.findMarks(Eo(e.first,0),e.clipPos(Eo(e.lastLine())),function(e){return e.parent})}function Gn(e,t){for(var n=0;n<t.length;n++){var r=t[n],i=r.find(),o=e.clipPos(i.from),a=e.clipPos(i.to);if(Oo(o,a)){var l=Bn(e,o,a,r.primary,r.primary.type);r.markers.push(l),l.parent=r}}}function Kn(e){for(var t=0;t<e.length;t++){var n=e[t],r=[n.primary.doc];Ur(n.primary.doc,function(e){r.push(e)});for(var i=0;i<n.markers.length;i++){var o=n.markers[i];-1==Ai(r,o.doc)&&(o.parent=null,n.markers.splice(i--,1))}}}function Xn(e,t,n){this.marker=e,this.from=t,this.to=n}function Zn(e,t){if(e)for(var n=0;n<e.length;++n){var r=e[n];if(r.marker==t)return r}}function Yn(e,t){for(var n,r=0;r<e.length;++r)e[r]!=t&&(n||(n=[])).push(e[r]);return n}function Qn(e,t){e.markedSpans=e.markedSpans?e.markedSpans.concat([t]):[t],t.marker.attachLine(e)}function Jn(e,t,n){if(e)for(var r,i=0;i<e.length;++i){var o=e[i],a=o.marker,l=null==o.from||(a.inclusiveLeft?o.from<=t:o.from<t);if(l||o.from==t&&"bookmark"==a.type&&(!n||!o.marker.insertLeft)){var s=null==o.to||(a.inclusiveRight?o.to>=t:o.to>t);(r||(r=[])).push(new Xn(a,o.from,s?null:o.to))}}return r}function er(e,t,n){if(e)for(var r,i=0;i<e.length;++i){var o=e[i],a=o.marker,l=null==o.to||(a.inclusiveRight?o.to>=t:o.to>t);if(l||o.from==t&&"bookmark"==a.type&&(!n||o.marker.insertLeft)){var s=null==o.from||(a.inclusiveLeft?o.from<=t:o.from<t);(r||(r=[])).push(new Xn(a,s?null:o.from-t,null==o.to?null:o.to-t))}}return r}function tr(e,t){if(t.full)return null;var n=ve(e,t.from.line)&&Gr(e,t.from.line).markedSpans,r=ve(e,t.to.line)&&Gr(e,t.to.line).markedSpans;if(!n&&!r)return null;var i=t.from.ch,o=t.to.ch,a=0==Oo(t.from,t.to),l=Jn(n,i,a),s=er(r,o,a),c=1==t.text.length,u=Ti(t.text).length+(c?i:0);if(l)for(var f=0;f<l.length;++f){var d=l[f];if(null==d.to){var p=Zn(s,d.marker);p?c&&(d.to=null==p.to?null:p.to+u):d.to=i}}if(s)for(var f=0;f<s.length;++f){var d=s[f];if(null!=d.to&&(d.to+=u),null==d.from){var p=Zn(l,d.marker);p||(d.from=u,c&&(l||(l=[])).push(d))}else d.from+=u,c&&(l||(l=[])).push(d)}l&&(l=nr(l)),s&&s!=l&&(s=nr(s));var h=[l];if(!c){var m,g=t.text.length-2;if(g>0&&l)for(var f=0;f<l.length;++f)null==l[f].to&&(m||(m=[])).push(new Xn(l[f].marker,null,null));for(var f=0;g>f;++f)h.push(m);h.push(s)}return h}function nr(e){for(var t=0;t<e.length;++t){var n=e[t];null!=n.from&&n.from==n.to&&n.marker.clearWhenEmpty!==!1&&e.splice(t--,1)}return e.length?e:null}function rr(e,t){var n=fi(e,t),r=tr(e,t);if(!n)return r;if(!r)return n;for(var i=0;i<n.length;++i){var o=n[i],a=r[i];if(o&&a)e:for(var l=0;l<a.length;++l){for(var s=a[l],c=0;c<o.length;++c)if(o[c].marker==s.marker)continue e;o.push(s)}else a&&(n[i]=a)}return n}function ir(e,t,n){var r=null;if(e.iter(t.line,n.line+1,function(e){if(e.markedSpans)for(var t=0;t<e.markedSpans.length;++t){var n=e.markedSpans[t].marker;!n.readOnly||r&&-1!=Ai(r,n)||(r||(r=[])).push(n)}}),!r)return null;for(var i=[{from:t,to:n}],o=0;o<r.length;++o)for(var a=r[o],l=a.find(0),s=0;s<i.length;++s){var c=i[s];if(!(Oo(c.to,l.from)<0||Oo(c.from,l.to)>0)){var u=[s,1],f=Oo(c.from,l.from),d=Oo(c.to,l.to);(0>f||!a.inclusiveLeft&&!f)&&u.push({from:c.from,to:l.from}),(d>0||!a.inclusiveRight&&!d)&&u.push({from:l.to,to:c.to}),i.splice.apply(i,u),s+=u.length-1}}return i}function or(e){var t=e.markedSpans;if(t){for(var n=0;n<t.length;++n)t[n].marker.detachLine(e);e.markedSpans=null}}function ar(e,t){if(t){for(var n=0;n<t.length;++n)t[n].marker.attachLine(e);e.markedSpans=t}}function lr(e){return e.inclusiveLeft?-1:0}function sr(e){return e.inclusiveRight?1:0}function cr(e,t){var n=e.lines.length-t.lines.length;if(0!=n)return n;var r=e.find(),i=t.find(),o=Oo(r.from,i.from)||lr(e)-lr(t);if(o)return-o;var a=Oo(r.to,i.to)||sr(e)-sr(t);return a?a:t.id-e.id}function ur(e,t){var n,r=zo&&e.markedSpans;if(r)for(var i,o=0;o<r.length;++o)i=r[o],i.marker.collapsed&&null==(t?i.from:i.to)&&(!n||cr(n,i.marker)<0)&&(n=i.marker);return n}function fr(e){return ur(e,!0)}function dr(e){return ur(e,!1)}function pr(e,t,n,r,i){var o=Gr(e,t),a=zo&&o.markedSpans;if(a)for(var l=0;l<a.length;++l){var s=a[l];if(s.marker.collapsed){var c=s.marker.find(0),u=Oo(c.from,n)||lr(s.marker)-lr(i),f=Oo(c.to,r)||sr(s.marker)-sr(i);if(!(u>=0&&0>=f||0>=u&&f>=0)&&(0>=u&&(Oo(c.to,n)>0||s.marker.inclusiveRight&&i.inclusiveLeft)||u>=0&&(Oo(c.from,r)<0||s.marker.inclusiveLeft&&i.inclusiveRight)))return!0}}}function hr(e){for(var t;t=fr(e);)e=t.find(-1,!0).line;return e}function mr(e){for(var t,n;t=dr(e);)e=t.find(1,!0).line,(n||(n=[])).push(e);return n}function gr(e,t){var n=Gr(e,t),r=hr(n);return n==r?t:Yr(r)}function vr(e,t){if(t>e.lastLine())return t;var n,r=Gr(e,t);if(!yr(e,r))return t;for(;n=dr(r);)r=n.find(1,!0).line;return Yr(r)+1}function yr(e,t){var n=zo&&t.markedSpans;if(n)for(var r,i=0;i<n.length;++i)if(r=n[i],r.marker.collapsed){if(null==r.from)return!0;if(!r.marker.widgetNode&&0==r.from&&r.marker.inclusiveLeft&&br(e,t,r))return!0}}function br(e,t,n){if(null==n.to){var r=n.marker.find(1,!0);return br(e,r.line,Zn(r.line.markedSpans,n.marker))}if(n.marker.inclusiveRight&&n.to==t.text.length)return!0;for(var i,o=0;o<t.markedSpans.length;++o)if(i=t.markedSpans[o],i.marker.collapsed&&!i.marker.widgetNode&&i.from==n.to&&(null==i.to||i.to!=n.from)&&(i.marker.inclusiveLeft||n.marker.inclusiveRight)&&br(e,t,i))return!0}function xr(e,t,n){Jr(t)<(e.curOp&&e.curOp.scrollTop||e.doc.scrollTop)&&qn(e,null,n)}function _r(e){if(null!=e.height)return e.height;var t=e.doc.cm;if(!t)return 0;if(!Ra(document.body,e.node)){var n="position: relative;";e.coverGutter&&(n+="margin-left: -"+t.display.gutters.offsetWidth+"px;"),e.noHScroll&&(n+="width: "+t.display.wrapper.clientWidth+"px;"),Wi(t.display.measure,ji("div",[e.node],null,n))}return e.height=e.node.offsetHeight}function kr(e,t,n,r){var i=new da(e,n,r),o=e.cm;return o&&i.noHScroll&&(o.display.alignWidgets=!0),Dn(e,t,"widget",function(t){var 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e=this.cm,t=this.textarea,n=this.prevInput;if(!e.state.focused||Ga(t)&&!n||Q(e)||e.options.disableInput||e.state.keySeq)return!1;e.state.pasteIncoming&&e.state.fakedLastChar&&(t.value=t.value.substring(0,t.value.length-1),e.state.fakedLastChar=!1);var r=t.value;if(r==n&&!e.somethingSelected())return!1;if(po&&ho>=9&&this.hasSelection===r||Co&&/[\uf700-\uf7ff]/.test(r))return e.display.input.reset(),!1;if(e.doc.sel==e.display.selForContextMenu){var i=r.charCodeAt(0);if(8203!=i||n||(n="​"),8666==i)return this.reset(),this.cm.execCommand("undo")}for(var o=0,a=Math.min(n.length,r.length);a>o&&n.charCodeAt(o)==r.charCodeAt(o);)++o;var l=this;return Lt(e,function(){J(e,r.slice(o),n.length-o,null,l.composing?"*compose":null),r.length>1e3||r.indexOf("\n")>-1?t.value=l.prevInput="":l.prevInput=r,l.composing&&(l.composing.range.clear(),l.composing.range=e.markText(l.composing.start,e.getCursor("to"),{className:"CodeMirror-composing"}))}),!0},ensurePolled:function(){this.pollingFast&&this.poll()&&(this.pollingFast=!1)},onKeyPress:function(){po&&ho>=9&&(this.hasSelection=null),this.fastPoll()},onContextMenu:function(e){function t(){if(null!=a.selectionStart){var e=i.somethingSelected(),t="​"+(e?a.value:"");a.value="⇚",a.value=t,r.prevInput=e?"":"​",a.selectionStart=1,a.selectionEnd=t.length,o.selForContextMenu=i.doc.sel}}function n(){if(r.contextMenuPending=!1,r.wrapper.style.position="relative",a.style.cssText=u,po&&9>ho&&o.scrollbars.setScrollTop(o.scroller.scrollTop=s),null!=a.selectionStart){(!po||po&&9>ho)&&t();var e=0,n=function(){o.selForContextMenu==i.doc.sel&&0==a.selectionStart&&a.selectionEnd>0&&"​"==r.prevInput?Tt(i,ra.selectAll)(i):e++<10?o.detectingSelectAll=setTimeout(n,500):o.input.reset()};o.detectingSelectAll=setTimeout(n,200)}}var r=this,i=r.cm,o=i.display,a=r.textarea,l=Bt(i,e),s=o.scroller.scrollTop;if(l&&!yo){var c=i.options.resetSelectionOnContextMenu;c&&-1==i.doc.sel.contains(l)&&Tt(i,Me)(i.doc,pe(l),Aa);var u=a.style.cssText;if(r.wrapper.style.position="absolute",a.style.cssText="position: fixed; width: 30px; height: 30px; top: "+(e.clientY-5)+"px; left: "+(e.clientX-5)+"px; z-index: 1000; background: "+(po?"rgba(255, 255, 255, .05)":"transparent")+"; outline: none; border-width: 0; outline: none; overflow: hidden; opacity: .05; filter: alpha(opacity=5);",mo)var f=window.scrollY;if(o.input.focus(),mo&&window.scrollTo(null,f),o.input.reset(),i.somethingSelected()||(a.value=r.prevInput=" "),r.contextMenuPending=!0,o.selForContextMenu=i.doc.sel,clearTimeout(o.detectingSelectAll),po&&ho>=9&&t(),To){ka(e);var d=function(){Ca(window,"mouseup",d),setTimeout(n,20)};wa(window,"mouseup",d)}else setTimeout(n,50)}},setUneditable:Ei,needsContentAttribute:!1},ne.prototype),ie.prototype=qi({init:function(e){function t(e){if(r.somethingSelected())qo=r.getSelections(),"cut"==e.type&&r.replaceSelection("",null,"cut");else{if(!r.options.lineWiseCopyCut)return;var t=ee(r);qo=t.text,"cut"==e.type&&r.operation(function(){r.setSelections(t.ranges,0,Aa),r.replaceSelection("",null,"cut")})}if(e.clipboardData&&!ko)e.preventDefault(),e.clipboardData.clearData(),e.clipboardData.setData("text/plain",qo.join("\n"));else{var n=re(),i=n.firstChild;r.display.lineSpace.insertBefore(n,r.display.lineSpace.firstChild),i.value=qo.join("\n");var o=document.activeElement;Na(i),setTimeout(function(){r.display.lineSpace.removeChild(n),o.focus()},50)}}var n=this,r=n.cm,i=n.div=e.lineDiv;i.contentEditable="true",te(i),wa(i,"paste",function(e){var t=e.clipboardData&&e.clipboardData.getData("text/plain");t&&(e.preventDefault(),r.replaceSelection(t,null,"paste"))}),wa(i,"compositionstart",function(e){var t=e.data;if(n.composing={sel:r.doc.sel,data:t,startData:t},t){var i=r.doc.sel.primary(),o=r.getLine(i.head.line),a=o.indexOf(t,Math.max(0,i.head.ch-t.length));a>-1&&a<=i.head.ch&&(n.composing.sel=pe(Eo(i.head.line,a),Eo(i.head.line,a+t.length)))}}),wa(i,"compositionupdate",function(e){n.composing.data=e.data}),wa(i,"compositionend",function(e){var t=n.composing;t&&(e.data==t.startData||/\u200b/.test(e.data)||(t.data=e.data),setTimeout(function(){t.handled||n.applyComposition(t),n.composing==t&&(n.composing=null)},50))}),wa(i,"touchstart",function(){n.forceCompositionEnd()}),wa(i,"input",function(){n.composing||n.pollContent()||Lt(n.cm,function(){qt(r)})}),wa(i,"copy",t),wa(i,"cut",t)},prepareSelection:function(){var e=qe(this.cm,!1);return e.focus=this.cm.state.focused,e},showSelection:function(e){e&&this.cm.display.view.length&&(e.focus&&this.showPrimarySelection(),this.showMultipleSelections(e))},showPrimarySelection:function(){var e=window.getSelection(),t=this.cm.doc.sel.primary(),n=le(this.cm,e.anchorNode,e.anchorOffset),r=le(this.cm,e.focusNode,e.focusOffset);if(!n||n.bad||!r||r.bad||0!=Oo(Z(n,r),t.from())||0!=Oo(X(n,r),t.to())){var i=oe(this.cm,t.from()),o=oe(this.cm,t.to());if(i||o){var a=this.cm.display.view,l=e.rangeCount&&e.getRangeAt(0);if(i){if(!o){var s=a[a.length-1].measure,c=s.maps?s.maps[s.maps.length-1]:s.map;o={node:c[c.length-1],offset:c[c.length-2]-c[c.length-3]}}}else i={node:a[0].measure.map[2],offset:0};try{var u=Ia(i.node,i.offset,o.offset,o.node)}catch(f){}u&&(e.removeAllRanges(),e.addRange(u),l&&null==e.anchorNode?e.addRange(l):co&&this.startGracePeriod()),this.rememberSelection()}}},startGracePeriod:function(){var e=this;clearTimeout(this.gracePeriod),this.gracePeriod=setTimeout(function(){e.gracePeriod=!1,e.selectionChanged()&&e.cm.operation(function(){e.cm.curOp.selectionChanged=!0})},20)},showMultipleSelections:function(e){Wi(this.cm.display.cursorDiv,e.cursors),Wi(this.cm.display.selectionDiv,e.selection)},rememberSelection:function(){var e=window.getSelection();this.lastAnchorNode=e.anchorNode,this.lastAnchorOffset=e.anchorOffset,this.lastFocusNode=e.focusNode,this.lastFocusOffset=e.focusOffset},selectionInEditor:function(){var e=window.getSelection();if(!e.rangeCount)return!1;var t=e.getRangeAt(0).commonAncestorContainer;return Ra(this.div,t)},focus:function(){"nocursor"!=this.cm.options.readOnly&&this.div.focus()},blur:function(){this.div.blur()},getField:function(){return this.div},supportsTouch:function(){return!0},receivedFocus:function(){function e(){t.cm.state.focused&&(t.pollSelection(),t.polling.set(t.cm.options.pollInterval,e))}var t=this;this.selectionInEditor()?this.pollSelection():Lt(this.cm,function(){t.cm.curOp.selectionChanged=!0}),this.polling.set(this.cm.options.pollInterval,e)},selectionChanged:function(){var e=window.getSelection();return e.anchorNode!=this.lastAnchorNode||e.anchorOffset!=this.lastAnchorOffset||e.focusNode!=this.lastFocusNode||e.focusOffset!=this.lastFocusOffset},pollSelection:function(){if(!this.composing&&!this.gracePeriod&&this.selectionChanged()){var e=window.getSelection(),t=this.cm;this.rememberSelection();var n=le(t,e.anchorNode,e.anchorOffset),r=le(t,e.focusNode,e.focusOffset);n&&r&&Lt(t,function(){Me(t.doc,pe(n,r),Aa),(n.bad||r.bad)&&(t.curOp.selectionChanged=!0)})}},pollContent:function(){var e=this.cm,t=e.display,n=e.doc.sel.primary(),r=n.from(),i=n.to();if(r.line<t.viewFrom||i.line>t.viewTo-1)return!1;var o;if(r.line==t.viewFrom||0==(o=Pt(e,r.line)))var a=Yr(t.view[0].line),l=t.view[0].node;else var a=Yr(t.view[o].line),l=t.view[o-1].node.nextSibling;var s=Pt(e,i.line);if(s==t.view.length-1)var c=t.viewTo-1,u=t.view[s].node;else var c=Yr(t.view[s+1].line)-1,u=t.view[s+1].node.previousSibling;for(var f=Va(ce(e,l,u,a,c)),d=Kr(e.doc,Eo(a,0),Eo(c,Gr(e.doc,c).text.length));f.length>1&&d.length>1;)if(Ti(f)==Ti(d))f.pop(),d.pop(),c--;else{if(f[0]!=d[0])break;f.shift(),d.shift(),a++}for(var p=0,h=0,m=f[0],g=d[0],v=Math.min(m.length,g.length);v>p&&m.charCodeAt(p)==g.charCodeAt(p);)++p;for(var y=Ti(f),b=Ti(d),x=Math.min(y.length-(1==f.length?p:0),b.length-(1==d.length?p:0));x>h&&y.charCodeAt(y.length-h-1)==b.charCodeAt(b.length-h-1);)++h;f[f.length-1]=y.slice(0,y.length-h),f[0]=f[0].slice(p);var _=Eo(a,p),k=Eo(c,d.length?Ti(d).length-h:0);return f.length>1||f[0]||Oo(_,k)?(Tn(e.doc,f,_,k,"+input"),!0):void 0},ensurePolled:function(){this.forceCompositionEnd()},reset:function(){this.forceCompositionEnd()},forceCompositionEnd:function(){this.composing&&!this.composing.handled&&(this.applyComposition(this.composing),this.composing.handled=!0,this.div.blur(),this.div.focus())},applyComposition:function(e){e.data&&e.data!=e.startData&&Tt(this.cm,J)(this.cm,e.data,0,e.sel)},setUneditable:function(e){e.setAttribute("contenteditable","false")},onKeyPress:function(e){e.preventDefault(),Tt(this.cm,J)(this.cm,String.fromCharCode(null==e.charCode?e.keyCode:e.charCode),0)},onContextMenu:Ei,resetPosition:Ei,needsContentAttribute:!0},ie.prototype),e.inputStyles={textarea:ne,contenteditable:ie},ue.prototype={primary:function(){return this.ranges[this.primIndex]},equals:function(e){if(e==this)return!0;if(e.primIndex!=this.primIndex||e.ranges.length!=this.ranges.length)return!1;for(var t=0;t<this.ranges.length;t++){var n=this.ranges[t],r=e.ranges[t];if(0!=Oo(n.anchor,r.anchor)||0!=Oo(n.head,r.head))return!1}return!0},deepCopy:function(){for(var e=[],t=0;t<this.ranges.length;t++)e[t]=new fe(K(this.ranges[t].anchor),K(this.ranges[t].head));return new ue(e,this.primIndex)},somethingSelected:function(){for(var e=0;e<this.ranges.length;e++)if(!this.ranges[e].empty())return!0;return!1},contains:function(e,t){t||(t=e);for(var n=0;n<this.ranges.length;n++){var r=this.ranges[n];if(Oo(t,r.from())>=0&&Oo(e,r.to())<=0)return n}return-1}},fe.prototype={from:function(){return Z(this.anchor,this.head)},to:function(){return X(this.anchor,this.head)},empty:function(){return this.head.line==this.anchor.line&&this.head.ch==this.anchor.ch}};var No,Io,Po,Do={left:0,right:0,top:0,bottom:0},jo=null,Ro=0,Wo=0,Fo=0,Ho=null;po?Ho=-.53:co?Ho=15:vo?Ho=-.7:bo&&(Ho=-1/3);var $o=function(e){var t=e.wheelDeltaX,n=e.wheelDeltaY;return null==t&&e.detail&&e.axis==e.HORIZONTAL_AXIS&&(t=e.detail),null==n&&e.detail&&e.axis==e.VERTICAL_AXIS?n=e.detail:null==n&&(n=e.wheelDelta),{x:t,y:n}};e.wheelEventPixels=function(e){var t=$o(e);return t.x*=Ho,t.y*=Ho,t};var Bo=new Si,Uo=null,Vo=e.changeEnd=function(e){return e.text?Eo(e.from.line+e.text.length-1,Ti(e.text).length+(1==e.text.length?e.from.ch:0)):e.to};e.prototype={constructor:e,focus:function(){window.focus(),this.display.input.focus()},setOption:function(e,t){var n=this.options,r=n[e];(n[e]!=t||"mode"==e)&&(n[e]=t,Ko.hasOwnProperty(e)&&Tt(this,Ko[e])(this,t,r))},getOption:function(e){return this.options[e]},getDoc:function(){return this.doc},addKeyMap:function(e,t){this.state.keyMaps[t?"push":"unshift"]($n(e))},removeKeyMap:function(e){for(var t=this.state.keyMaps,n=0;n<t.length;++n)if(t[n]==e||t[n].name==e)return t.splice(n,1),!0},addOverlay:At(function(t,n){var r=t.token?t:e.getMode(this.options,t);if(r.startState)throw new Error("Overlays may not be stateful.");this.state.overlays.push({mode:r,modeSpec:t,opaque:n&&n.opaque}),this.state.modeGen++,qt(this)}),removeOverlay:At(function(e){for(var t=this.state.overlays,n=0;n<t.length;++n){var r=t[n].modeSpec;if(r==e||"string"==typeof e&&r.name==e)return t.splice(n,1),this.state.modeGen++,void qt(this)}}),indentLine:At(function(e,t,n){"string"!=typeof t&&"number"!=typeof t&&(t=null==t?this.options.smartIndent?"smart":"prev":t?"add":"subtract"),ve(this.doc,e)&&Pn(this,e,t,n)}),indentSelection:At(function(e){for(var t=this.doc.sel.ranges,n=-1,r=0;r<t.length;r++){var i=t[r];if(i.empty())i.head.line>n&&(Pn(this,i.head.line,e,!0),n=i.head.line,r==this.doc.sel.primIndex&&Nn(this));else{var o=i.from(),a=i.to(),l=Math.max(n,o.line);n=Math.min(this.lastLine(),a.line-(a.ch?0:1))+1;for(var s=l;n>s;++s)Pn(this,s,e);var c=this.doc.sel.ranges;0==o.ch&&t.length==c.length&&c[r].from().ch>0&&ke(this.doc,r,new fe(o,c[r].to()),Aa)}}}),getTokenAt:function(e,t){return Tr(this,e,t)},getLineTokens:function(e,t){return Tr(this,Eo(e),t,!0)},getTokenTypeAt:function(e){e=me(this.doc,e);var t,n=Er(this,Gr(this.doc,e.line)),r=0,i=(n.length-1)/2,o=e.ch;if(0==o)t=n[2];else for(;;){var a=r+i>>1;if((a?n[2*a-1]:0)>=o)i=a;else{if(!(n[2*a+1]<o)){t=n[2*a+2];break}r=a+1}}var l=t?t.indexOf("cm-overlay "):-1;return 0>l?t:0==l?null:t.slice(0,l-1)},getModeAt:function(t){var n=this.doc.mode;return n.innerMode?e.innerMode(n,this.getTokenAt(t).state).mode:n},getHelper:function(e,t){return this.getHelpers(e,t)[0]},getHelpers:function(e,t){var n=[];if(!ea.hasOwnProperty(t))return n;var r=ea[t],i=this.getModeAt(e);if("string"==typeof i[t])r[i[t]]&&n.push(r[i[t]]);else if(i[t])for(var o=0;o<i[t].length;o++){var a=r[i[t][o]];a&&n.push(a)}else i.helperType&&r[i.helperType]?n.push(r[i.helperType]):r[i.name]&&n.push(r[i.name]);for(var o=0;o<r._global.length;o++){var l=r._global[o];l.pred(i,this)&&-1==Ai(n,l.val)&&n.push(l.val)}return n},getStateAfter:function(e,t){var n=this.doc;return e=he(n,null==e?n.first+n.size-1:e),We(this,e+1,t)},cursorCoords:function(e,t){var n,r=this.doc.sel.primary();return n=null==e?r.head:"object"==typeof e?me(this.doc,e):e?r.from():r.to(),ft(this,n,t||"page")},charCoords:function(e,t){return ut(this,me(this.doc,e),t||"page")},coordsChar:function(e,t){return e=ct(this,e,t||"page"),ht(this,e.left,e.top)},lineAtHeight:function(e,t){return e=ct(this,{top:e,left:0},t||"page").top,Qr(this.doc,e+this.display.viewOffset)},heightAtLine:function(e,t){var n,r=!1;if("number"==typeof e){var i=this.doc.first+this.doc.size-1;e<this.doc.first?e=this.doc.first:e>i&&(e=i,r=!0),n=Gr(this.doc,e)}else n=e;return st(this,n,{top:0,left:0},t||"page").top+(r?this.doc.height-Jr(n):0)},defaultTextHeight:function(){return gt(this.display)},defaultCharWidth:function(){return vt(this.display)},setGutterMarker:At(function(e,t,n){return Dn(this.doc,e,"gutter",function(e){var r=e.gutterMarkers||(e.gutterMarkers={});return r[t]=n,!n&&Pi(r)&&(e.gutterMarkers=null),!0})}),clearGutter:At(function(e){var t=this,n=t.doc,r=n.first;n.iter(function(n){n.gutterMarkers&&n.gutterMarkers[e]&&(n.gutterMarkers[e]=null,Nt(t,r,"gutter"),Pi(n.gutterMarkers)&&(n.gutterMarkers=null)),++r})}),lineInfo:function(e){if("number"==typeof e){if(!ve(this.doc,e))return null;var t=e;if(e=Gr(this.doc,e),!e)return null}else{var t=Yr(e);if(null==t)return null}return{line:t,handle:e,text:e.text,gutterMarkers:e.gutterMarkers,textClass:e.textClass,bgClass:e.bgClass,wrapClass:e.wrapClass,widgets:e.widgets}},getViewport:function(){return{from:this.display.viewFrom,to:this.display.viewTo}},addWidget:function(e,t,n,r,i){var o=this.display;e=ft(this,me(this.doc,e));var a=e.bottom,l=e.left;if(t.style.position="absolute",t.setAttribute("cm-ignore-events","true"),this.display.input.setUneditable(t),o.sizer.appendChild(t),"over"==r)a=e.top;else if("above"==r||"near"==r){var s=Math.max(o.wrapper.clientHeight,this.doc.height),c=Math.max(o.sizer.clientWidth,o.lineSpace.clientWidth);("above"==r||e.bottom+t.offsetHeight>s)&&e.top>t.offsetHeight?a=e.top-t.offsetHeight:e.bottom+t.offsetHeight<=s&&(a=e.bottom),l+t.offsetWidth>c&&(l=c-t.offsetWidth)}t.style.top=a+"px",t.style.left=t.style.right="","right"==i?(l=o.sizer.clientWidth-t.offsetWidth,t.style.right="0px"):("left"==i?l=0:"middle"==i&&(l=(o.sizer.clientWidth-t.offsetWidth)/2),t.style.left=l+"px"),n&&En(this,l,a,l+t.offsetWidth,a+t.offsetHeight)},triggerOnKeyDown:At(sn),triggerOnKeyPress:At(fn),triggerOnKeyUp:un,execCommand:function(e){return ra.hasOwnProperty(e)?ra[e](this):void 0},findPosH:function(e,t,n,r){var i=1;0>t&&(i=-1,t=-t);for(var o=0,a=me(this.doc,e);t>o&&(a=Rn(this.doc,a,i,n,r),!a.hitSide);++o);return a},moveH:At(function(e,t){var n=this;n.extendSelectionsBy(function(r){return n.display.shift||n.doc.extend||r.empty()?Rn(n.doc,r.head,e,t,n.options.rtlMoveVisually):0>e?r.from():r.to()},Ea)}),deleteH:At(function(e,t){var n=this.doc.sel,r=this.doc;n.somethingSelected()?r.replaceSelection("",null,"+delete"):jn(this,function(n){var i=Rn(r,n.head,e,t,!1);return 0>e?{from:i,to:n.head}:{from:n.head,to:i}})}),findPosV:function(e,t,n,r){var i=1,o=r;0>t&&(i=-1,t=-t);for(var a=0,l=me(this.doc,e);t>a;++a){var s=ft(this,l,"div");if(null==o?o=s.left:s.left=o,l=Wn(this,s,i,n),l.hitSide)break}return l},moveV:At(function(e,t){var n=this,r=this.doc,i=[],o=!n.display.shift&&!r.extend&&r.sel.somethingSelected();if(r.extendSelectionsBy(function(a){if(o)return 0>e?a.from():a.to();var l=ft(n,a.head,"div");null!=a.goalColumn&&(l.left=a.goalColumn),i.push(l.left);var s=Wn(n,l,e,t);return"page"==t&&a==r.sel.primary()&&qn(n,null,ut(n,s,"div").top-l.top),s},Ea),i.length)for(var a=0;a<r.sel.ranges.length;a++)r.sel.ranges[a].goalColumn=i[a]}),findWordAt:function(e){var t=this.doc,n=Gr(t,e.line).text,r=e.ch,i=e.ch;if(n){var o=this.getHelper(e,"wordChars");(e.xRel<0||i==n.length)&&r?--r:++i;for(var a=n.charAt(r),l=Ii(a,o)?function(e){return Ii(e,o)}:/\s/.test(a)?function(e){return/\s/.test(e)}:function(e){return!/\s/.test(e)&&!Ii(e)};r>0&&l(n.charAt(r-1));)--r;for(;i<n.length&&l(n.charAt(i));)++i}return new fe(Eo(e.line,r),Eo(e.line,i))},toggleOverwrite:function(e){(null==e||e!=this.state.overwrite)&&((this.state.overwrite=!this.state.overwrite)?$a(this.display.cursorDiv,"CodeMirror-overwrite"):Ha(this.display.cursorDiv,"CodeMirror-overwrite"),Sa(this,"overwriteToggle",this,this.state.overwrite))},hasFocus:function(){return this.display.input.getField()==Fi()},scrollTo:At(function(e,t){(null!=e||null!=t)&&In(this),null!=e&&(this.curOp.scrollLeft=e),null!=t&&(this.curOp.scrollTop=t)}),getScrollInfo:function(){var e=this.display.scroller;return{left:e.scrollLeft,top:e.scrollTop,height:e.scrollHeight-Be(this)-this.display.barHeight,width:e.scrollWidth-Be(this)-this.display.barWidth,clientHeight:Ve(this),clientWidth:Ue(this)}},scrollIntoView:At(function(e,t){if(null==e?(e={from:this.doc.sel.primary().head,to:null},null==t&&(t=this.options.cursorScrollMargin)):"number"==typeof e?e={from:Eo(e,0),to:null}:null==e.from&&(e={from:e,to:null}),e.to||(e.to=e.from),e.margin=t||0,null!=e.from.line)In(this),this.curOp.scrollToPos=e;else{var n=On(this,Math.min(e.from.left,e.to.left),Math.min(e.from.top,e.to.top)-e.margin,Math.max(e.from.right,e.to.right),Math.max(e.from.bottom,e.to.bottom)+e.margin);this.scrollTo(n.scrollLeft,n.scrollTop)}}),setSize:At(function(e,t){function n(e){return"number"==typeof e||/^\d+$/.test(String(e))?e+"px":e}var r=this;null!=e&&(r.display.wrapper.style.width=n(e)),null!=t&&(r.display.wrapper.style.height=n(t)),r.options.lineWrapping&&it(this);var i=r.display.viewFrom;r.doc.iter(i,r.display.viewTo,function(e){if(e.widgets)for(var t=0;t<e.widgets.length;t++)if(e.widgets[t].noHScroll){Nt(r,i,"widget");break}++i}),r.curOp.forceUpdate=!0,Sa(r,"refresh",this)}),operation:function(e){return Lt(this,e)},refresh:At(function(){var e=this.display.cachedTextHeight;qt(this),this.curOp.forceUpdate=!0,ot(this),this.scrollTo(this.doc.scrollLeft,this.doc.scrollTop),u(this),(null==e||Math.abs(e-gt(this.display))>.5)&&a(this),Sa(this,"refresh",this)}),swapDoc:At(function(e){var t=this.doc;return t.cm=null,Vr(this,e),ot(this),this.display.input.reset(),this.scrollTo(e.scrollLeft,e.scrollTop),this.curOp.forceScroll=!0,bi(this,"swapDoc",this,t),t}),getInputField:function(){return this.display.input.getField()},getWrapperElement:function(){return this.display.wrapper},getScrollerElement:function(){return this.display.scroller},getGutterElement:function(){return this.display.gutters}},Ci(e);var Go=e.defaults={},Ko=e.optionHandlers={},Xo=e.Init={toString:function(){return"CodeMirror.Init"}};Fn("value","",function(e,t){e.setValue(t)},!0),Fn("mode",null,function(e,t){e.doc.modeOption=t,n(e)},!0),Fn("indentUnit",2,n,!0),Fn("indentWithTabs",!1),Fn("smartIndent",!0),Fn("tabSize",4,function(e){r(e),ot(e),qt(e)},!0),Fn("specialChars",/[\t\u0000-\u0019\u00ad\u200b-\u200f\u2028\u2029\ufeff]/g,function(t,n,r){t.state.specialChars=new RegExp(n.source+(n.test("	")?"":"|	"),"g"),r!=e.Init&&t.refresh()}),Fn("specialCharPlaceholder",Ir,function(e){e.refresh()},!0),Fn("electricChars",!0),Fn("inputStyle",wo?"contenteditable":"textarea",function(){throw new Error("inputStyle can not (yet) be changed in a running editor")},!0),Fn("rtlMoveVisually",!So),Fn("wholeLineUpdateBefore",!0),Fn("theme","default",function(e){l(e),s(e)},!0),Fn("keyMap","default",function(t,n,r){var 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Zo=e.modes={},Yo=e.mimeModes={};e.defineMode=function(t,n){e.defaults.mode||"null"==t||(e.defaults.mode=t),arguments.length>2&&(n.dependencies=Array.prototype.slice.call(arguments,2)),Zo[t]=n},e.defineMIME=function(e,t){Yo[e]=t},e.resolveMode=function(t){if("string"==typeof t&&Yo.hasOwnProperty(t))t=Yo[t];else if(t&&"string"==typeof t.name&&Yo.hasOwnProperty(t.name)){var n=Yo[t.name];"string"==typeof n&&(n={name:n}),t=Oi(n,t),t.name=n.name}else if("string"==typeof t&&/^[\w\-]+\/[\w\-]+\+xml$/.test(t))return e.resolveMode("application/xml");return"string"==typeof t?{name:t}:t||{name:"null"}},e.getMode=function(t,n){var n=e.resolveMode(n),r=Zo[n.name];if(!r)return e.getMode(t,"text/plain");var i=r(t,n);if(Qo.hasOwnProperty(n.name)){var o=Qo[n.name];for(var a in o)o.hasOwnProperty(a)&&(i.hasOwnProperty(a)&&(i["_"+a]=i[a]),i[a]=o[a])}if(i.name=n.name,n.helperType&&(i.helperType=n.helperType),n.modeProps)for(var a in n.modeProps)i[a]=n.modeProps[a];return i},e.defineMode("null",function(){return{token:function(e){e.skipToEnd()}}}),e.defineMIME("text/plain","null");var Qo=e.modeExtensions={};e.extendMode=function(e,t){var n=Qo.hasOwnProperty(e)?Qo[e]:Qo[e]={};qi(t,n)},e.defineExtension=function(t,n){e.prototype[t]=n},e.defineDocExtension=function(e,t){va.prototype[e]=t},e.defineOption=Fn;var Jo=[];e.defineInitHook=function(e){Jo.push(e)};var ea=e.helpers={};e.registerHelper=function(t,n,r){ea.hasOwnProperty(t)||(ea[t]=e[t]={_global:[]}),ea[t][n]=r},e.registerGlobalHelper=function(t,n,r,i){e.registerHelper(t,n,i),ea[t]._global.push({pred:r,val:i})};var ta=e.copyState=function(e,t){if(t===!0)return t;if(e.copyState)return e.copyState(t);var n={};for(var r in t){var i=t[r];i instanceof Array&&(i=i.concat([])),n[r]=i}return n},na=e.startState=function(e,t,n){return e.startState?e.startState(t,n):!0};e.innerMode=function(e,t){for(;e.innerMode;){var n=e.innerMode(t);if(!n||n.mode==e)break;t=n.state,e=n.mode}return n||{mode:e,state:t}};var ra=e.commands={selectAll:function(e){e.setSelection(Eo(e.firstLine(),0),Eo(e.lastLine()),Aa)},singleSelection:function(e){e.setSelection(e.getCursor("anchor"),e.getCursor("head"),Aa)},killLine:function(e){jn(e,function(t){if(t.empty()){var n=Gr(e.doc,t.head.line).text.length;return t.head.ch==n&&t.head.line<e.lastLine()?{from:t.head,to:Eo(t.head.line+1,0)}:{from:t.head,to:Eo(t.head.line,n)}}return{from:t.from(),to:t.to()}})},deleteLine:function(e){jn(e,function(t){return{from:Eo(t.from().line,0),to:me(e.doc,Eo(t.to().line+1,0))}})},delLineLeft:function(e){jn(e,function(e){return{from:Eo(e.from().line,0),to:e.from()}})},delWrappedLineLeft:function(e){jn(e,function(t){var n=e.charCoords(t.head,"div").top+5,r=e.coordsChar({left:0,top:n},"div");return{from:r,to:t.from()}})},delWrappedLineRight:function(e){jn(e,function(t){var n=e.charCoords(t.head,"div").top+5,r=e.coordsChar({left:e.display.lineDiv.offsetWidth+100,top:n},"div");return{from:t.from(),to:r}})},undo:function(e){e.undo()},redo:function(e){e.redo()},undoSelection:function(e){e.undoSelection()},redoSelection:function(e){e.redoSelection()},goDocStart:function(e){e.extendSelection(Eo(e.firstLine(),0))},goDocEnd:function(e){e.extendSelection(Eo(e.lastLine()))},goLineStart:function(e){e.extendSelectionsBy(function(t){return to(e,t.head.line)},{origin:"+move",bias:1})},goLineStartSmart:function(e){e.extendSelectionsBy(function(t){return ro(e,t.head)},{origin:"+move",bias:1})},goLineEnd:function(e){e.extendSelectionsBy(function(t){return no(e,t.head.line)},{origin:"+move",bias:-1})},goLineRight:function(e){e.extendSelectionsBy(function(t){var n=e.charCoords(t.head,"div").top+5;return e.coordsChar({left:e.display.lineDiv.offsetWidth+100,top:n},"div")},Ea)},goLineLeft:function(e){e.extendSelectionsBy(function(t){var n=e.charCoords(t.head,"div").top+5;return e.coordsChar({left:0,top:n},"div")},Ea)},goLineLeftSmart:function(e){e.extendSelectionsBy(function(t){var n=e.charCoords(t.head,"div").top+5,r=e.coordsChar({left:0,top:n},"div");return r.ch<e.getLine(r.line).search(/\S/)?ro(e,t.head):r},Ea)},goLineUp:function(e){e.moveV(-1,"line")},goLineDown:function(e){e.moveV(1,"line")},goPageUp:function(e){e.moveV(-1,"page")},goPageDown:function(e){e.moveV(1,"page")},goCharLeft:function(e){e.moveH(-1,"char")},goCharRight:function(e){e.moveH(1,"char")},goColumnLeft:function(e){e.moveH(-1,"column")},goColumnRight:function(e){e.moveH(1,"column")},goWordLeft:function(e){e.moveH(-1,"word")},goGroupRight:function(e){e.moveH(1,"group")},goGroupLeft:function(e){e.moveH(-1,"group")},goWordRight:function(e){e.moveH(1,"word")},delCharBefore:function(e){e.deleteH(-1,"char")},delCharAfter:function(e){e.deleteH(1,"char")},delWordBefore:function(e){e.deleteH(-1,"word")},delWordAfter:function(e){e.deleteH(1,"word")},delGroupBefore:function(e){e.deleteH(-1,"group")},delGroupAfter:function(e){e.deleteH(1,"group")},indentAuto:function(e){e.indentSelection("smart")},indentMore:function(e){e.indentSelection("add")},indentLess:function(e){e.indentSelection("subtract")},insertTab:function(e){e.replaceSelection("	")},insertSoftTab:function(e){for(var t=[],n=e.listSelections(),r=e.options.tabSize,i=0;i<n.length;i++){var o=n[i].from(),a=Oa(e.getLine(o.line),o.ch,r);t.push(new Array(r-a%r+1).join(" "))}e.replaceSelections(t)},defaultTab:function(e){e.somethingSelected()?e.indentSelection("add"):e.execCommand("insertTab")},transposeChars:function(e){Lt(e,function(){for(var t=e.listSelections(),n=[],r=0;r<t.length;r++){var i=t[r].head,o=Gr(e.doc,i.line).text;if(o)if(i.ch==o.length&&(i=new Eo(i.line,i.ch-1)),i.ch>0)i=new Eo(i.line,i.ch+1),e.replaceRange(o.charAt(i.ch-1)+o.charAt(i.ch-2),Eo(i.line,i.ch-2),i,"+transpose");else if(i.line>e.doc.first){var a=Gr(e.doc,i.line-1).text;a&&e.replaceRange(o.charAt(0)+"\n"+a.charAt(a.length-1),Eo(i.line-1,a.length-1),Eo(i.line,1),"+transpose")}n.push(new fe(i,i))}e.setSelections(n)})},newlineAndIndent:function(e){Lt(e,function(){for(var t=e.listSelections().length,n=0;t>n;n++){var r=e.listSelections()[n];e.replaceRange("\n",r.anchor,r.head,"+input"),e.indentLine(r.from().line+1,null,!0),Nn(e)}})},toggleOverwrite:function(e){e.toggleOverwrite()}},ia=e.keyMap={};ia.basic={Left:"goCharLeft",Right:"goCharRight",Up:"goLineUp",Down:"goLineDown",End:"goLineEnd",Home:"goLineStartSmart",PageUp:"goPageUp",PageDown:"goPageDown",Delete:"delCharAfter",Backspace:"delCharBefore","Shift-Backspace":"delCharBefore",Tab:"defaultTab","Shift-Tab":"indentAuto",Enter:"newlineAndIndent",Insert:"toggleOverwrite",Esc:"singleSelection"},ia.pcDefault={"Ctrl-A":"selectAll","Ctrl-D":"deleteLine","Ctrl-Z":"undo","Shift-Ctrl-Z":"redo","Ctrl-Y":"redo","Ctrl-Home":"goDocStart","Ctrl-End":"goDocEnd","Ctrl-Up":"goLineUp","Ctrl-Down":"goLineDown","Ctrl-Left":"goGroupLeft","Ctrl-Right":"goGroupRight","Alt-Left":"goLineStart","Alt-Right":"goLineEnd","Ctrl-Backspace":"delGroupBefore","Ctrl-Delete":"delGroupAfter","Ctrl-S":"save","Ctrl-F":"find","Ctrl-G":"findNext","Shift-Ctrl-G":"findPrev","Shift-Ctrl-F":"replace","Shift-Ctrl-R":"replaceAll","Ctrl-[":"indentLess","Ctrl-]":"indentMore","Ctrl-U":"undoSelection","Shift-Ctrl-U":"redoSelection","Alt-U":"redoSelection",fallthrough:"basic"},ia.emacsy={"Ctrl-F":"goCharRight","Ctrl-B":"goCharLeft","Ctrl-P":"goLineUp","Ctrl-N":"goLineDown","Alt-F":"goWordRight","Alt-B":"goWordLeft","Ctrl-A":"goLineStart","Ctrl-E":"goLineEnd","Ctrl-V":"goPageDown","Shift-Ctrl-V":"goPageUp","Ctrl-D":"delCharAfter","Ctrl-H":"delCharBefore","Alt-D":"delWordAfter","Alt-Backspace":"delWordBefore","Ctrl-K":"killLine","Ctrl-T":"transposeChars"},ia.macDefault={"Cmd-A":"selectAll","Cmd-D":"deleteLine","Cmd-Z":"undo","Shift-Cmd-Z":"redo","Cmd-Y":"redo","Cmd-Home":"goDocStart","Cmd-Up":"goDocStart","Cmd-End":"goDocEnd","Cmd-Down":"goDocEnd","Alt-Left":"goGroupLeft","Alt-Right":"goGroupRight","Cmd-Left":"goLineLeft","Cmd-Right":"goLineRight","Alt-Backspace":"delGroupBefore","Ctrl-Alt-Backspace":"delGroupAfter","Alt-Delete":"delGroupAfter","Cmd-S":"save","Cmd-F":"find","Cmd-G":"findNext","Shift-Cmd-G":"findPrev","Cmd-Alt-F":"replace","Shift-Cmd-Alt-F":"replaceAll","Cmd-[":"indentLess","Cmd-]":"indentMore","Cmd-Backspace":"delWrappedLineLeft","Cmd-Delete":"delWrappedLineRight","Cmd-U":"undoSelection","Shift-Cmd-U":"redoSelection","Ctrl-Up":"goDocStart","Ctrl-Down":"goDocEnd",fallthrough:["basic","emacsy"]},ia["default"]=Co?ia.macDefault:ia.pcDefault,e.normalizeKeyMap=function(e){var t={};for(var n in e)if(e.hasOwnProperty(n)){var r=e[n];if(/^(name|fallthrough|(de|at)tach)$/.test(n))continue;if("..."==r){delete e[n];continue}for(var i=zi(n.split(" "),Hn),o=0;o<i.length;o++){var a,l;o==i.length-1?(l=n,a=r):(l=i.slice(0,o+1).join(" "),a="...");var s=t[l];if(s){if(s!=a)throw new Error("Inconsistent bindings for "+l)}else t[l]=a}delete e[n]}for(var c in t)e[c]=t[c];return e};var oa=e.lookupKey=function(e,t,n,r){t=$n(t);var i=t.call?t.call(e,r):t[e];if(i===!1)return"nothing";if("..."===i)return"multi";if(null!=i&&n(i))return"handled";if(t.fallthrough){if("[object Array]"!=Object.prototype.toString.call(t.fallthrough))return oa(e,t.fallthrough,n,r);for(var o=0;o<t.fallthrough.length;o++){var a=oa(e,t.fallthrough[o],n,r);if(a)return a}}},aa=e.isModifierKey=function(e){var t="string"==typeof e?e:Za[e.keyCode];return"Ctrl"==t||"Alt"==t||"Shift"==t||"Mod"==t},la=e.keyName=function(e,t){if(yo&&34==e.keyCode&&e["char"])return!1;var n=Za[e.keyCode],r=n;return 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this.lastColumnPos<this.start&&(this.lastColumnValue=Oa(this.string,this.start,this.tabSize,this.lastColumnPos,this.lastColumnValue),this.lastColumnPos=this.start),this.lastColumnValue-(this.lineStart?Oa(this.string,this.lineStart,this.tabSize):0)},indentation:function(){return Oa(this.string,null,this.tabSize)-(this.lineStart?Oa(this.string,this.lineStart,this.tabSize):0)},match:function(e,t,n){if("string"!=typeof e){var r=this.string.slice(this.pos).match(e);return r&&r.index>0?null:(r&&t!==!1&&(this.pos+=r[0].length),r)}var i=function(e){return n?e.toLowerCase():e},o=this.string.substr(this.pos,e.length);return i(o)==i(e)?(t!==!1&&(this.pos+=e.length),!0):void 0},current:function(){return this.string.slice(this.start,this.pos)},hideFirstChars:function(e,t){this.lineStart+=e;try{return t()}finally{this.lineStart-=e}}};var ca=0,ua=e.TextMarker=function(e,t){this.lines=[],this.type=t,this.doc=e,this.id=++ca};Ci(ua),ua.prototype.clear=function(){if(!this.explicitlyCleared){var e=this.doc.cm,t=e&&!e.curOp;if(t&&yt(e),wi(this,"clear")){var n=this.find();n&&bi(this,"clear",n.from,n.to)}for(var r=null,i=null,o=0;o<this.lines.length;++o){var a=this.lines[o],l=Zn(a.markedSpans,this);e&&!this.collapsed?Nt(e,Yr(a),"text"):e&&(null!=l.to&&(i=Yr(a)),null!=l.from&&(r=Yr(a))),a.markedSpans=Yn(a.markedSpans,l),null==l.from&&this.collapsed&&!yr(this.doc,a)&&e&&Zr(a,gt(e.display))}if(e&&this.collapsed&&!e.options.lineWrapping)for(var o=0;o<this.lines.length;++o){var s=hr(this.lines[o]),c=f(s);c>e.display.maxLineLength&&(e.display.maxLine=s,e.display.maxLineLength=c,e.display.maxLineChanged=!0)}null!=r&&e&&this.collapsed&&qt(e,r,i+1),this.lines.length=0,this.explicitlyCleared=!0,this.atomic&&this.doc.cantEdit&&(this.doc.cantEdit=!1,e&&Ae(e.doc)),e&&bi(e,"markerCleared",e,this),t&&xt(e),this.parent&&this.parent.clear()}},ua.prototype.find=function(e,t){null==e&&"bookmark"==this.type&&(e=1);for(var n,r,i=0;i<this.lines.length;++i){var o=this.lines[i],a=Zn(o.markedSpans,this);if(null!=a.from&&(n=Eo(t?o:Yr(o),a.from),-1==e))return n;if(null!=a.to&&(r=Eo(t?o:Yr(o),a.to),1==e))return r}return n&&{from:n,to:r}},ua.prototype.changed=function(){var e=this.find(-1,!0),t=this,n=this.doc.cm;e&&n&&Lt(n,function(){var r=e.line,i=Yr(e.line),o=Ye(n,i);if(o&&(rt(o),n.curOp.selectionChanged=n.curOp.forceUpdate=!0),n.curOp.updateMaxLine=!0,!yr(t.doc,r)&&null!=t.height){var a=t.height;t.height=null;var l=_r(t)-a;l&&Zr(r,r.height+l)}})},ua.prototype.attachLine=function(e){if(!this.lines.length&&this.doc.cm){var t=this.doc.cm.curOp;t.maybeHiddenMarkers&&-1!=Ai(t.maybeHiddenMarkers,this)||(t.maybeUnhiddenMarkers||(t.maybeUnhiddenMarkers=[])).push(this)}this.lines.push(e)},ua.prototype.detachLine=function(e){if(this.lines.splice(Ai(this.lines,e),1),!this.lines.length&&this.doc.cm){var t=this.doc.cm.curOp;(t.maybeHiddenMarkers||(t.maybeHiddenMarkers=[])).push(this)}};var ca=0,fa=e.SharedTextMarker=function(e,t){this.markers=e,this.primary=t;for(var n=0;n<e.length;++n)e[n].parent=this};Ci(fa),fa.prototype.clear=function(){if(!this.explicitlyCleared){this.explicitlyCleared=!0;for(var e=0;e<this.markers.length;++e)this.markers[e].clear();bi(this,"clear")}},fa.prototype.find=function(e,t){return this.primary.find(e,t)};var da=e.LineWidget=function(e,t,n){if(n)for(var r in n)n.hasOwnProperty(r)&&(this[r]=n[r]);this.doc=e,this.node=t};Ci(da),da.prototype.clear=function(){var e=this.doc.cm,t=this.line.widgets,n=this.line,r=Yr(n);if(null!=r&&t){for(var i=0;i<t.length;++i)t[i]==this&&t.splice(i--,1);t.length||(n.widgets=null);var o=_r(this);Zr(n,Math.max(0,n.height-o)),e&&Lt(e,function(){xr(e,n,-o),Nt(e,r,"widget")})}},da.prototype.changed=function(){var e=this.height,t=this.doc.cm,n=this.line;this.height=null;var r=_r(this)-e;r&&(Zr(n,n.height+r),t&&Lt(t,function(){t.curOp.forceUpdate=!0,xr(t,n,r)}))};var pa=e.Line=function(e,t,n){this.text=e,ar(this,t),this.height=n?n(this):1};Ci(pa),pa.prototype.lineNo=function(){return Yr(this)};var ha={},ma={};$r.prototype={chunkSize:function(){return this.lines.length},removeInner:function(e,t){for(var n=e,r=e+t;r>n;++n){var i=this.lines[n];this.height-=i.height,Cr(i),bi(i,"delete")}this.lines.splice(e,t)},collapse:function(e){e.push.apply(e,this.lines)},insertInner:function(e,t,n){this.height+=n,this.lines=this.lines.slice(0,e).concat(t).concat(this.lines.slice(e));for(var r=0;r<t.length;++r)t[r].parent=this},iterN:function(e,t,n){for(var r=e+t;r>e;++e)if(n(this.lines[e]))return!0}},Br.prototype={chunkSize:function(){return this.size},removeInner:function(e,t){this.size-=t;for(var n=0;n<this.children.length;++n){var r=this.children[n],i=r.chunkSize();if(i>e){var o=Math.min(t,i-e),a=r.height;if(r.removeInner(e,o),this.height-=a-r.height,i==o&&(this.children.splice(n--,1),r.parent=null),0==(t-=o))break;e=0}else e-=i}if(this.size-t<25&&(this.children.length>1||!(this.children[0]instanceof $r))){var l=[];this.collapse(l),this.children=[new $r(l)],this.children[0].parent=this}},collapse:function(e){for(var t=0;t<this.children.length;++t)this.children[t].collapse(e)},insertInner:function(e,t,n){this.size+=t.length,this.height+=n;for(var r=0;r<this.children.length;++r){var i=this.children[r],o=i.chunkSize();if(o>=e){if(i.insertInner(e,t,n),i.lines&&i.lines.length>50){for(;i.lines.length>50;){var a=i.lines.splice(i.lines.length-25,25),l=new $r(a);i.height-=l.height,this.children.splice(r+1,0,l),l.parent=this}this.maybeSpill()}break}e-=o}},maybeSpill:function(){if(!(this.children.length<=10)){var e=this;do{var t=e.children.splice(e.children.length-5,5),n=new Br(t);if(e.parent){e.size-=n.size,e.height-=n.height;var r=Ai(e.parent.children,e);e.parent.children.splice(r+1,0,n)}else{var i=new Br(e.children);i.parent=e,e.children=[i,n],e=i}n.parent=e.parent}while(e.children.length>10);e.parent.maybeSpill()}},iterN:function(e,t,n){for(var r=0;r<this.children.length;++r){var i=this.children[r],o=i.chunkSize();if(o>e){var a=Math.min(t,o-e);if(i.iterN(e,a,n))return!0;if(0==(t-=a))break;e=0}else e-=o}}};var ga=0,va=e.Doc=function(e,t,n){if(!(this instanceof va))return new va(e,t,n);null==n&&(n=0),Br.call(this,[new $r([new pa("",null)])]),this.first=n,this.scrollTop=this.scrollLeft=0,this.cantEdit=!1,this.cleanGeneration=1,this.frontier=n;var r=Eo(n,0);this.sel=pe(r),this.history=new ti(null),this.id=++ga,this.modeOption=t,"string"==typeof e&&(e=Va(e)),Hr(this,{from:r,to:r,text:e}),Me(this,pe(r),Aa)};va.prototype=Oi(Br.prototype,{constructor:va,iter:function(e,t,n){n?this.iterN(e-this.first,t-e,n):this.iterN(this.first,this.first+this.size,e)},insert:function(e,t){for(var n=0,r=0;r<t.length;++r)n+=t[r].height;this.insertInner(e-this.first,t,n)},remove:function(e,t){this.removeInner(e-this.first,t)},getValue:function(e){var t=Xr(this,this.first,this.first+this.size);return e===!1?t:t.join(e||"\n")},setValue:zt(function(e){var t=Eo(this.first,0),n=this.first+this.size-1;kn(this,{from:t,to:Eo(n,Gr(this,n).text.length),text:Va(e),origin:"setValue",full:!0},!0),Me(this,pe(t))}),replaceRange:function(e,t,n,r){t=me(this,t),n=n?me(this,n):t,Tn(this,e,t,n,r)},getRange:function(e,t,n){var r=Kr(this,me(this,e),me(this,t));return n===!1?r:r.join(n||"\n")},getLine:function(e){var t=this.getLineHandle(e);return t&&t.text},getLineHandle:function(e){return ve(this,e)?Gr(this,e):void 0},getLineNumber:function(e){return Yr(e)},getLineHandleVisualStart:function(e){return"number"==typeof e&&(e=Gr(this,e)),hr(e)},lineCount:function(){return this.size},firstLine:function(){return this.first},lastLine:function(){return this.first+this.size-1},clipPos:function(e){return me(this,e)},getCursor:function(e){var t,n=this.sel.primary();return t=null==e||"head"==e?n.head:"anchor"==e?n.anchor:"end"==e||"to"==e||e===!1?n.to():n.from()},listSelections:function(){return this.sel.ranges},somethingSelected:function(){return this.sel.somethingSelected()},setCursor:zt(function(e,t,n){we(this,me(this,"number"==typeof e?Eo(e,t||0):e),null,n)}),setSelection:zt(function(e,t,n){we(this,me(this,e),me(this,t||e),n)}),extendSelection:zt(function(e,t,n){xe(this,me(this,e),t&&me(this,t),n)}),extendSelections:zt(function(e,t){_e(this,ye(this,e,t))}),extendSelectionsBy:zt(function(e,t){_e(this,zi(this.sel.ranges,e),t)}),setSelections:zt(function(e,t,n){if(e.length){for(var r=0,i=[];r<e.length;r++)i[r]=new fe(me(this,e[r].anchor),me(this,e[r].head));null==t&&(t=Math.min(e.length-1,this.sel.primIndex)),Me(this,de(i,t),n)}}),addSelection:zt(function(e,t,n){var r=this.sel.ranges.slice(0);r.push(new fe(me(this,e),me(this,t||e))),Me(this,de(r,r.length-1),n)}),getSelection:function(e){for(var t,n=this.sel.ranges,r=0;r<n.length;r++){var i=Kr(this,n[r].from(),n[r].to());t=t?t.concat(i):i}return e===!1?t:t.join(e||"\n")},getSelections:function(e){for(var t=[],n=this.sel.ranges,r=0;r<n.length;r++){var i=Kr(this,n[r].from(),n[r].to());e!==!1&&(i=i.join(e||"\n")),t[r]=i}return t},replaceSelection:function(e,t,n){for(var r=[],i=0;i<this.sel.ranges.length;i++)r[i]=e;this.replaceSelections(r,t,n||"+input")},replaceSelections:zt(function(e,t,n){for(var r=[],i=this.sel,o=0;o<i.ranges.length;o++){var a=i.ranges[o];r[o]={from:a.from(),to:a.to(),text:Va(e[o]),origin:n}}for(var l=t&&"end"!=t&&xn(this,r,t),o=r.length-1;o>=0;o--)kn(this,r[o]);l?Se(this,l):this.cm&&Nn(this.cm)}),undo:zt(function(){Cn(this,"undo")}),redo:zt(function(){Cn(this,"redo")}),undoSelection:zt(function(){Cn(this,"undo",!0)}),redoSelection:zt(function(){Cn(this,"redo",!0)}),setExtending:function(e){this.extend=e},getExtending:function(){return this.extend},historySize:function(){for(var e=this.history,t=0,n=0,r=0;r<e.done.length;r++)e.done[r].ranges||++t;for(var r=0;r<e.undone.length;r++)e.undone[r].ranges||++n;return{undo:t,redo:n}},clearHistory:function(){this.history=new ti(this.history.maxGeneration)},markClean:function(){this.cleanGeneration=this.changeGeneration(!0)},changeGeneration:function(e){return e&&(this.history.lastOp=this.history.lastSelOp=this.history.lastOrigin=null),this.history.generation},isClean:function(e){return this.history.generation==(e||this.cleanGeneration)},getHistory:function(){return{done:di(this.history.done),undone:di(this.history.undone)}},setHistory:function(e){var t=this.history=new ti(this.history.maxGeneration);t.done=di(e.done.slice(0),null,!0),t.undone=di(e.undone.slice(0),null,!0)},addLineClass:zt(function(e,t,n){return Dn(this,e,"gutter"==t?"gutter":"class",function(e){var r="text"==t?"textClass":"background"==t?"bgClass":"gutter"==t?"gutterClass":"wrapClass";if(e[r]){if(Hi(n).test(e[r]))return!1;e[r]+=" "+n}else e[r]=n;return!0})}),removeLineClass:zt(function(e,t,n){return Dn(this,e,"gutter"==t?"gutter":"class",function(e){var r="text"==t?"textClass":"background"==t?"bgClass":"gutter"==t?"gutterClass":"wrapClass",i=e[r];if(!i)return!1;if(null==n)e[r]=null;else{var o=i.match(Hi(n));if(!o)return!1;var a=o.index+o[0].length;e[r]=i.slice(0,o.index)+(o.index&&a!=i.length?" 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e=[];return this.iter(function(t){var n=t.markedSpans;if(n)for(var r=0;r<n.length;++r)null!=n[r].from&&e.push(n[r].marker)}),e},posFromIndex:function(e){var t,n=this.first;return this.iter(function(r){var i=r.text.length+1;return i>e?(t=e,!0):(e-=i,void++n)}),me(this,Eo(n,t))},indexFromPos:function(e){e=me(this,e);var t=e.ch;return e.line<this.first||e.ch<0?0:(this.iter(this.first,e.line,function(e){t+=e.text.length+1}),t)},copy:function(e){var t=new va(Xr(this,this.first,this.first+this.size),this.modeOption,this.first);return t.scrollTop=this.scrollTop,t.scrollLeft=this.scrollLeft,t.sel=this.sel,t.extend=!1,e&&(t.history.undoDepth=this.history.undoDepth,t.setHistory(this.getHistory())),t},linkedDoc:function(e){e||(e={});var t=this.first,n=this.first+this.size;null!=e.from&&e.from>t&&(t=e.from),null!=e.to&&e.to<n&&(n=e.to);var r=new va(Xr(this,t,n),e.mode||this.modeOption,t);return e.sharedHist&&(r.history=this.history),(this.linked||(this.linked=[])).push({doc:r,sharedHist:e.sharedHist}),r.linked=[{doc:this,isParent:!0,sharedHist:e.sharedHist}],Gn(r,Vn(this)),r},unlinkDoc:function(t){if(t instanceof e&&(t=t.doc),this.linked)for(var n=0;n<this.linked.length;++n){var r=this.linked[n];if(r.doc==t){this.linked.splice(n,1),t.unlinkDoc(this),Kn(Vn(this));break}}if(t.history==this.history){var i=[t.id];Ur(t,function(e){i.push(e.id)},!0),t.history=new ti(null),t.history.done=di(this.history.done,i),t.history.undone=di(this.history.undone,i)}},iterLinkedDocs:function(e){Ur(this,e)},getMode:function(){return this.mode},getEditor:function(){return this.cm}}),va.prototype.eachLine=va.prototype.iter;var ya="iter insert remove copy getEditor".split(" ");for(var ba in va.prototype)va.prototype.hasOwnProperty(ba)&&Ai(ya,ba)<0&&(e.prototype[ba]=function(e){return function(){return e.apply(this.doc,arguments)}}(va.prototype[ba]));Ci(va);var 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define&&define.amd?define(["../../lib/codemirror"],e):e(CodeMirror)}(function(e){"use strict";function t(e){for(var t=0;t<e.state.activeLines.length;t++)e.removeLineClass(e.state.activeLines[t],"wrap",o),e.removeLineClass(e.state.activeLines[t],"background",a)}function n(e,t){if(e.length!=t.length)return!1;for(var n=0;n<e.length;n++)if(e[n]!=t[n])return!1;return!0}function r(e,r){for(var i=[],l=0;l<r.length;l++){var s=r[l];if(s.empty()){var c=e.getLineHandleVisualStart(s.head.line);i[i.length-1]!=c&&i.push(c)}}n(e.state.activeLines,i)||e.operation(function(){t(e);for(var n=0;n<i.length;n++)e.addLineClass(i[n],"wrap",o),e.addLineClass(i[n],"background",a);e.state.activeLines=i})}function i(e,t){r(e,t.ranges)}var o="CodeMirror-activeline",a="CodeMirror-activeline-background";e.defineOption("styleActiveLine",!1,function(n,o,a){var l=a&&a!=e.Init;o&&!l?(n.state.activeLines=[],
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o&&u?{from:r(i.line,a),to:r(i.line,a+u),match:o}:void 0};else{var a=t;o&&(t=t.toLowerCase());var l=o?function(e){return e.toLowerCase()}:function(e){return e},s=t.split("\n");if(1==s.length)t.length?this.matches=function(i,o){if(i){var s=e.getLine(o.line).slice(0,o.ch),c=l(s),u=c.lastIndexOf(t);if(u>-1)return u=n(s,c,u),{from:r(o.line,u),to:r(o.line,u+a.length)}}else{var s=e.getLine(o.line).slice(o.ch),c=l(s),u=c.indexOf(t);if(u>-1)return u=n(s,c,u)+o.ch,{from:r(o.line,u),to:r(o.line,u+a.length)}}}:this.matches=function(){};else{var c=a.split("\n");this.matches=function(t,n){var i=s.length-1;if(t){if(n.line-(s.length-1)<e.firstLine())return;if(l(e.getLine(n.line).slice(0,c[i].length))!=s[s.length-1])return;for(var o=r(n.line,c[i].length),a=n.line-1,u=i-1;u>=1;--u,--a)if(s[u]!=l(e.getLine(a)))return;var f=e.getLine(a),d=f.length-c[0].length;if(l(f.slice(d))!=s[0])return;return{from:r(a,d),to:o}}if(!(n.line+(s.length-1)>e.lastLine())){var f=e.getLine(n.line),d=f.length-c[0].length;if(l(f.slice(d))==s[0]){for(var p=r(n.line,d),a=n.line+1,u=1;i>u;++u,++a)if(s[u]!=l(e.getLine(a)))return;if(l(e.getLine(a).slice(0,c[i].length))==s[i])return{from:p,to:r(a,c[i].length)}}}}}}}function n(e,t,n){if(e.length==t.length)return n;for(var r=Math.min(n,e.length);;){var i=e.slice(0,r).toLowerCase().length;if(n>i)++r;else{if(!(i>n))return r;--r}}}var r=e.Pos;t.prototype={findNext:function(){return this.find(!1)},findPrevious:function(){return this.find(!0)},find:function(e){function t(e){var t=r(e,0);return n.pos={from:t,to:t},n.atOccurrence=!1,!1}for(var n=this,i=this.doc.clipPos(e?this.pos.from:this.pos.to);;){if(this.pos=this.matches(e,i))return this.atOccurrence=!0,this.pos.match||!0;if(e){if(!i.line)return t(0);i=r(i.line-1,this.doc.getLine(i.line-1).length)}else{var o=this.doc.lineCount();if(i.line==o-1)return t(o);i=r(i.line+1,0)}}},from:function(){return this.atOccurrence?this.pos.from:void 0},to:function(){return this.atOccurrence?this.pos.to:void 0},replace:function(t,n){if(this.atOccurrence){var i=e.splitLines(t);this.doc.replaceRange(i,this.pos.from,this.pos.to,n),this.pos.to=r(this.pos.from.line+i.length-1,i[i.length-1].length+(1==i.length?this.pos.from.ch:0))}}},e.defineExtension("getSearchCursor",function(e,n,r){return new t(this.doc,e,n,r)}),e.defineDocExtension("getSearchCursor",function(e,n,r){return new t(this,e,n,r)}),e.defineExtension("selectMatches",function(t,n){for(var r,i=[],o=this.getSearchCursor(t,this.getCursor("from"),n);(r=o.findNext())&&!(e.cmpPos(o.to(),this.getCursor("to"))>0);)i.push({anchor:o.from(),head:o.to()});i.length&&this.setSelections(i,0)})}),function(e){"object"==typeof exports&&"object"==typeof module?e(require("../../lib/codemirror"),require("./searchcursor"),require("../dialog/dialog")):"function"==typeof define&&define.amd?define(["../../lib/codemirror","./searchcursor","../dialog/dialog"],e):e(CodeMirror)}(function(e){"use strict";function t(e,t){return"string"==typeof e?e=new RegExp(e.replace(/[\-\[\]\/\{\}\(\)\*\+\?\.\\\^\$\|]/g,"\\$&"),t?"gi":"g"):e.global||(e=new RegExp(e.source,e.ignoreCase?"gi":"g")),{token:function(t){e.lastIndex=t.pos;var n=e.exec(t.string);return n&&n.index==t.pos?(t.pos+=n[0].length,"searching"):void(n?t.pos=n.index:t.skipToEnd())}}}function n(){this.posFrom=this.posTo=this.lastQuery=this.query=null,this.overlay=null}function r(e){return e.state.search||(e.state.search=new n)}function i(e){return"string"==typeof e&&e==e.toLowerCase()}function o(e,t,n){return e.getSearchCursor(t,n,i(t))}function a(e,t,n,r,i){e.openDialog?e.openDialog(t,i,{value:r,selectValueOnOpen:!0}):i(prompt(n,r))}function l(e,t,n,r){e.openConfirm?e.openConfirm(t,r):confirm(n)&&r[0]()}function s(e){var t=e.match(/^\/(.*)\/([a-z]*)$/);if(t)try{e=new RegExp(t[1],-1==t[2].indexOf("i")?"":"i")}catch(n){}return("string"==typeof e?""==e:e.test(""))&&(e=/x^/),e}function c(e,n){var o=r(e);if(o.query)return u(e,n);var l=e.getSelection()||o.lastQuery;a(e,p,"Search for:",l,function(r){e.operation(function(){r&&!o.query&&(o.query=s(r),e.removeOverlay(o.overlay,i(o.query)),o.overlay=t(o.query,i(o.query)),e.addOverlay(o.overlay),e.showMatchesOnScrollbar&&(o.annotate&&(o.annotate.clear(),o.annotate=null),o.annotate=e.showMatchesOnScrollbar(o.query,i(o.query))),o.posFrom=o.posTo=e.getCursor(),u(e,n))})})}function u(t,n){t.operation(function(){var i=r(t),a=o(t,i.query,n?i.posFrom:i.posTo);(a.find(n)||(a=o(t,i.query,n?e.Pos(t.lastLine()):e.Pos(t.firstLine(),0)),a.find(n)))&&(t.setSelection(a.from(),a.to()),t.scrollIntoView({from:a.from(),to:a.to()}),i.posFrom=a.from(),i.posTo=a.to())})}function f(e){e.operation(function(){var t=r(e);t.lastQuery=t.query,t.query&&(t.query=null,e.removeOverlay(t.overlay),t.annotate&&(t.annotate.clear(),t.annotate=null))})}function d(e,t){if(!e.getOption("readOnly")){var n=e.getSelection()||r(e).lastQuery;a(e,h,"Replace:",n,function(n){n&&(n=s(n),a(e,m,"Replace 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search)</span>',m='With: <input type="text" style="width: 10em" class="CodeMirror-search-field"/>',g="Replace? <button>Yes</button> <button>No</button> <button>Stop</button>";e.commands.find=function(e){f(e),c(e)},e.commands.findNext=c,e.commands.findPrev=function(e){c(e,!0)},e.commands.clearSearch=f,e.commands.replace=d,e.commands.replaceAll=function(e){d(e,!0)}}),function(e){"object"==typeof exports&&"object"==typeof module?e(require("../../lib/codemirror"),require("./searchcursor"),require("../scroll/annotatescrollbar")):"function"==typeof define&&define.amd?define(["../../lib/codemirror","./searchcursor","../scroll/annotatescrollbar"],e):e(CodeMirror)}(function(e){"use strict";function t(e,t,n,r){this.cm=e,this.options=r;var i={listenForChanges:!1};for(var o in r)i[o]=r[o];i.className||(i.className="CodeMirror-search-match"),this.annotation=e.annotateScrollbar(i),this.query=t,this.caseFold=n,this.gap={from:e.firstLine(),to:e.lastLine()+1},this.matches=[],this.update=null,this.findMatches(),this.annotation.update(this.matches);var a=this;e.on("change",this.changeHandler=function(e,t){a.onChange(t)})}function n(e,t,n){return t>=e?e:Math.max(t,e+n)}e.defineExtension("showMatchesOnScrollbar",function(e,n,r){return"string"==typeof r&&(r={className:r}),r||(r={}),new t(this,e,n,r)});var r=1e3;t.prototype.findMatches=function(){if(this.gap){for(var t=0;t<this.matches.length;t++){var n=this.matches[t];if(n.from.line>=this.gap.to)break;n.to.line>=this.gap.from&&this.matches.splice(t--,1)}for(var i=this.cm.getSearchCursor(this.query,e.Pos(this.gap.from,0),this.caseFold),o=this.options&&this.options.maxMatches||r;i.findNext();){var n={from:i.from(),to:i.to()};if(n.from.line>=this.gap.to)break;if(this.matches.splice(t++,0,n),this.matches.length>o)break}this.gap=null}},t.prototype.onChange=function(t){var r=t.from.line,i=e.changeEnd(t).line,o=i-t.to.line;if(this.gap?(this.gap.from=Math.min(n(this.gap.from,r,o),t.from.line),this.gap.to=Math.max(n(this.gap.to,r,o),t.from.line)):this.gap={from:t.from.line,to:i+1},o)for(var a=0;a<this.matches.length;a++){var l=this.matches[a],s=n(l.from.line,r,o);s!=l.from.line&&(l.from=e.Pos(s,l.from.ch));var c=n(l.to.line,r,o);c!=l.to.line&&(l.to=e.Pos(c,l.to.ch))}clearTimeout(this.update);var u=this;this.update=setTimeout(function(){u.updateAfterChange()},250)},t.prototype.updateAfterChange=function(){this.findMatches(),this.annotation.update(this.matches)},t.prototype.clear=function(){this.cm.off("change",this.changeHandler),this.annotation.clear()}}),function(e){"object"==typeof exports&&"object"==typeof module?e(require("../../lib/codemirror")):"function"==typeof define&&define.amd?define(["../../lib/codemirror"],e):e(CodeMirror)}(function(e){"use strict";function t(t,n,r){function i(t){var n=e.wheelEventPixels(t)["horizontal"==o.orientation?"x":"y"],r=o.pos;o.moveTo(o.pos+n),o.pos!=r&&e.e_preventDefault(t)}this.orientation=n,this.scroll=r,this.screen=this.total=this.size=1,this.pos=0,this.node=document.createElement("div"),this.node.className=t+"-"+n,this.inner=this.node.appendChild(document.createElement("div"));var o=this;e.on(this.inner,"mousedown",function(t){function n(){e.off(document,"mousemove",r),e.off(document,"mouseup",n)}function r(e){return 1!=e.which?n():void o.moveTo(l+(e[i]-a)*(o.total/o.size))}if(1==t.which){e.e_preventDefault(t);var i="horizontal"==o.orientation?"pageX":"pageY",a=t[i],l=o.pos;e.on(document,"mousemove",r),e.on(document,"mouseup",n)}}),e.on(this.node,"click",function(t){e.e_preventDefault(t);var n,r=o.inner.getBoundingClientRect();n="horizontal"==o.orientation?t.clientX<r.left?-1:t.clientX>r.right?1:0:t.clientY<r.top?-1:t.clientY>r.bottom?1:0,o.moveTo(o.pos+n*o.screen)}),e.on(this.node,"mousewheel",i),e.on(this.node,"DOMMouseScroll",i)}function n(e,n,r){this.addClass=e,this.horiz=new t(e,"horizontal",r),n(this.horiz.node),this.vert=new t(e,"vertical",r),n(this.vert.node),this.width=null}t.prototype.moveTo=function(e,t){0>e&&(e=0),e>this.total-this.screen&&(e=this.total-this.screen),e!=this.pos&&(this.pos=e,this.inner.style["horizontal"==this.orientation?"left":"top"]=e*(this.size/this.total)+"px",t!==!1&&this.scroll(e,this.orientation))};var r=10;t.prototype.update=function(e,t,n){this.screen=t,this.total=e,this.size=n;var i=this.screen*(this.size/this.total);r>i&&(this.size-=r-i,i=r),this.inner.style["horizontal"==this.orientation?"width":"height"]=i-4+"px",this.inner.style["horizontal"==this.orientation?"left":"top"]=this.pos*(this.size/this.total)+"px"},n.prototype.update=function(e){if(null==this.width){var t=window.getComputedStyle?window.getComputedStyle(this.horiz.node):this.horiz.node.currentStyle;t&&(this.width=parseInt(t.height))}var n=this.width||0,r=e.scrollWidth>e.clientWidth+1,i=e.scrollHeight>e.clientHeight+1;return this.vert.node.style.display=i?"block":"none",this.horiz.node.style.display=r?"block":"none",i&&(this.vert.update(e.scrollHeight,e.clientHeight,e.viewHeight-(r?n:0)),this.vert.node.style.display="block",this.vert.node.style.bottom=r?n+"px":"0"),r&&(this.horiz.update(e.scrollWidth,e.clientWidth,e.viewWidth-(i?n:0)-e.barLeft),this.horiz.node.style.right=i?n+"px":"0",this.horiz.node.style.left=e.barLeft+"px"),{right:i?n:0,bottom:r?n:0}},n.prototype.setScrollTop=function(e){this.vert.moveTo(e,!1)},n.prototype.setScrollLeft=function(e){this.horiz.moveTo(e,!1)},n.prototype.clear=function(){var e=this.horiz.node.parentNode;e.removeChild(this.horiz.node),e.removeChild(this.vert.node)},e.scrollbarModel.simple=function(e,t){return new n("CodeMirror-simplescroll",e,t)},e.scrollbarModel.overlay=function(e,t){return new n("CodeMirror-overlayscroll",e,t)}}),function(e){"object"==typeof exports&&"object"==typeof module?e(require("../../lib/codemirror")):"function"==typeof define&&define.amd?define(["../../lib/codemirror"],e):e(CodeMirror)}(function(e){"use strict";function t(e,t){function n(e){clearTimeout(r.doRedraw),r.doRedraw=setTimeout(function(){r.redraw()},e)}this.cm=e,this.options=t,this.buttonHeight=t.scrollButtonHeight||e.getOption("scrollButtonHeight"),this.annotations=[],this.doRedraw=this.doUpdate=null,this.div=e.getWrapperElement().appendChild(document.createElement("div")),this.div.style.cssText="position: absolute; right: 0; top: 0; z-index: 7; pointer-events: none",this.computeScale();var r=this;e.on("refresh",this.resizeHandler=function(){clearTimeout(r.doUpdate),r.doUpdate=setTimeout(function(){r.computeScale()&&n(20)},100)}),e.on("markerAdded",this.resizeHandler),e.on("markerCleared",this.resizeHandler),t.listenForChanges!==!1&&e.on("change",this.changeHandler=function(){n(250)})}e.defineExtension("annotateScrollbar",function(e){return"string"==typeof e&&(e={className:e}),new t(this,e)}),e.defineOption("scrollButtonHeight",0),t.prototype.computeScale=function(){var e=this.cm,t=(e.getWrapperElement().clientHeight-e.display.barHeight-2*this.buttonHeight)/e.heightAtLine(e.lastLine()+1,"local");return t!=this.hScale?(this.hScale=t,!0):void 0},t.prototype.update=function(e){this.annotations=e,this.redraw()},t.prototype.redraw=function(e){function t(e,t){if(s!=e.line&&(s=e.line,c=n.getLineHandle(s)),a&&c.height>l)return n.charCoords(e,"local")[t?"top":"bottom"];var r=n.heightAtLine(c,"local");return r+(t?0:c.height)}e!==!1&&this.computeScale();var n=this.cm,r=this.hScale,i=document.createDocumentFragment(),o=this.annotations,a=n.getOption("lineWrapping"),l=a&&1.5*n.defaultTextHeight(),s=null,c=null;if(n.display.barWidth)for(var u,f=0;f<o.length;f++){for(var d=o[f],p=u||t(d.from,!0)*r,h=t(d.to,!1)*r;f<o.length-1&&(u=t(o[f+1].from,!0)*r,!(u>h+.9));)d=o[++f],h=t(d.to,!1)*r;if(h!=p){var m=Math.max(h-p,3),g=i.appendChild(document.createElement("div"));g.style.cssText="position: absolute; right: 0px; width: "+Math.max(2*n.display.barWidth,2)+"px; top: "+(p+this.buttonHeight)+"px; height: "+m+"px",g.className=this.options.className}}this.div.textContent="",this.div.appendChild(i)},t.prototype.clear=function(){this.cm.off("refresh",this.resizeHandler),this.cm.off("markerAdded",this.resizeHandler),this.cm.off("markerCleared",this.resizeHandler),this.changeHandler&&this.cm.off("change",this.changeHandler),this.div.parentNode.removeChild(this.div)}}),function(e){"object"==typeof exports&&"object"==typeof module?e(require("../../lib/codemirror")):"function"==typeof define&&define.amd?define(["../../lib/codemirror"],e):e(CodeMirror)}(function(e){function t(e,t,n){var r,i=e.getWrapperElement();return r=i.appendChild(document.createElement("div")),n?r.className="CodeMirror-dialog CodeMirror-dialog-bottom":r.className="CodeMirror-dialog CodeMirror-dialog-top","string"==typeof 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diff --git a/public/vendor/inlineAttachment/codemirror.inline-attachment.js b/public/vendor/inlineAttachment/codemirror.inline-attachment.js
index 7816d1c8..08bc4924 100755
--- a/public/vendor/inlineAttachment/codemirror.inline-attachment.js
+++ b/public/vendor/inlineAttachment/codemirror.inline-attachment.js
@@ -88,6 +88,8 @@
         return false;
       }
     });
+      
+    return inlineattach;
   };
 
   inlineAttachment.editors.codemirror4 = codeMirrorEditor4;
diff --git a/public/vendor/inlineAttachment/inline-attachment.js b/public/vendor/inlineAttachment/inline-attachment.js
index 9353ebd8..0ffd3f9f 100755
--- a/public/vendor/inlineAttachment/inline-attachment.js
+++ b/public/vendor/inlineAttachment/inline-attachment.js
@@ -352,7 +352,7 @@
   inlineAttachment.prototype.onFileInserted = function(file, id) {
     if (this.settings.onFileReceived.call(this, file) !== false) {
       this.lastValue = this.settings.progressText.replace(this.filenameTag, id);
-      this.editor.insertValue(this.lastValue);
+      this.editor.insertValue(this.lastValue + "\n");
     }
   };
 
diff --git a/public/vendor/jquery-textcomplete/jquery.textcomplete.js b/public/vendor/jquery-textcomplete/jquery.textcomplete.js
index 3f38ba50..145e2413 100755
--- a/public/vendor/jquery-textcomplete/jquery.textcomplete.js
+++ b/public/vendor/jquery-textcomplete/jquery.textcomplete.js
@@ -250,9 +250,13 @@ if (typeof jQuery === 'undefined') {
         if (context || context === '') {
           if (isString(context)) { text = context; }
             var cursor = editor.getCursor();
-            text = editor.getLine(cursor.line).slice(0, cursor.ch);
-          var match = text.match(strategy.match);
-          if (match) { return [strategy, match[strategy.index], match]; }
+            var line = editor.getLine(cursor.line);
+            var linematch = line.match(strategy.match);
+            if(linematch) {
+                text = line.slice(0, cursor.ch);
+                var textmatch = text.match(strategy.match);
+                if (textmatch) { return [strategy, textmatch[strategy.index], textmatch]; }
+            }
         }
       }
       return []
@@ -315,12 +319,14 @@ if (typeof jQuery === 'undefined') {
   };
 
   var dropdownViews = {};
-  $(document).on('click', function (e) {
+    /*
+  $(document).on('mousedown', function (e) {
     var id = e.originalEvent && e.originalEvent.keepTextCompleteDropdown;
     $.each(dropdownViews, function (key, view) {
       if (key !== id) { view.deactivate(); }
     });
   });
+  */
 
   // Dropdown view
   // =============
@@ -335,6 +341,7 @@ if (typeof jQuery === 'undefined') {
     this._data     = []; // zipped data.
     this.$inputEl  = $(element);
     this.option    = option;
+    this.tap       = false;
 
     // Override setPosition method.
     if (option.listPosition) { this.setPosition = option.listPosition; }
@@ -499,7 +506,18 @@ if (typeof jQuery === 'undefined') {
     // ---------------
 
     _bindEvents: function () {
-      this.$el.on('touchstart.' + this.id, '.textcomplete-item', $.proxy(this._onClick, this));
+      this.$inputEl.on('blur', $.proxy(this.deactivate, this));
+      this.$el.on('touchstart.' + this.id, '.textcomplete-item', $.proxy(function(e) {
+          this.tap = true;
+      }, this));
+      this.$el.on('touchmove.' + this.id, '.textcomplete-item', $.proxy(function(e) {
+          this.tap = false;
+      }, this));
+      this.$el.on('touchend.' + this.id, '.textcomplete-item', $.proxy(function(e) {
+          if(e.cancelable && this.tap) {
+              this._onClick(e);
+          }
+      }, this));
       this.$el.on('mousedown.' + this.id, '.textcomplete-item', $.proxy(this._onClick, this));
       this.$el.on('mouseover.' + this.id, '.textcomplete-item', $.proxy(this._onMouseover, this));
       this.$inputEl.on('keydown.' + this.id, $.proxy(this._onKeydown, this));
@@ -819,6 +837,7 @@ if (typeof jQuery === 'undefined') {
       this.id        = completer.id + this.constructor.name;
       this.completer = completer;
       this.option    = option;
+      this.lastCurosr = null;
 
       if (this.option.debounce) {
         this._onKeyup = debounce(this._onKeyup, this.option.debounce);
@@ -866,12 +885,20 @@ if (typeof jQuery === 'undefined') {
     // ---------------
 
     _bindEvents: function () {
+      editor.on('cursorActivity', $.proxy(this._onKeyup, this));
+      $('.CodeMirror').on('touchend.' + this.id, $.proxy(this._onKeyup, this));
+      $('.CodeMirror').on('mouseup.' + this.id, $.proxy(this._onKeyup, this));
+      $(editor.getInputField()).on('focus', $.proxy(this._onKeyup, this));
       this.$el.on('keyup.' + this.id, $.proxy(this._onKeyup, this));
     },
 
     _onKeyup: function (e) {
+      var focus = (e.type == 'focus');
+      var cursor = editor.getCursor();
+      var samePos = (cursor == this.lastCursor);
       if (this._skipSearch(e)) { return; }
-      this.completer.trigger(this.getTextFromHeadToCaret(), true);
+      this.completer.trigger(this.getTextFromHeadToCaret(), focus ? false : samePos);
+      this.lastCursor = cursor;
     },
 
     // Suppress searching if it returns true.
diff --git a/public/vendor/jquery.mousewheel.min.js b/public/vendor/jquery.mousewheel.min.js
new file mode 100755
index 00000000..e21c2787
--- /dev/null
+++ b/public/vendor/jquery.mousewheel.min.js
@@ -0,0 +1,8 @@
+/*! Copyright (c) 2013 Brandon Aaron (http://brandon.aaron.sh)
+ * Licensed under the MIT License (LICENSE.txt).
+ *
+ * Version: 3.1.11
+ *
+ * Requires: jQuery 1.2.2+
+ */
+!function(a){"function"==typeof define&&define.amd?define(["jquery"],a):"object"==typeof exports?module.exports=a:a(jQuery)}(function(a){function b(b){var g=b||window.event,h=i.call(arguments,1),j=0,l=0,m=0,n=0,o=0,p=0;if(b=a.event.fix(g),b.type="mousewheel","detail"in g&&(m=-1*g.detail),"wheelDelta"in g&&(m=g.wheelDelta),"wheelDeltaY"in g&&(m=g.wheelDeltaY),"wheelDeltaX"in g&&(l=-1*g.wheelDeltaX),"axis"in g&&g.axis===g.HORIZONTAL_AXIS&&(l=-1*m,m=0),j=0===m?l:m,"deltaY"in g&&(m=-1*g.deltaY,j=m),"deltaX"in g&&(l=g.deltaX,0===m&&(j=-1*l)),0!==m||0!==l){if(1===g.deltaMode){var q=a.data(this,"mousewheel-line-height");j*=q,m*=q,l*=q}else if(2===g.deltaMode){var r=a.data(this,"mousewheel-page-height");j*=r,m*=r,l*=r}if(n=Math.max(Math.abs(m),Math.abs(l)),(!f||f>n)&&(f=n,d(g,n)&&(f/=40)),d(g,n)&&(j/=40,l/=40,m/=40),j=Math[j>=1?"floor":"ceil"](j/f),l=Math[l>=1?"floor":"ceil"](l/f),m=Math[m>=1?"floor":"ceil"](m/f),k.settings.normalizeOffset&&this.getBoundingClientRect){var s=this.getBoundingClientRect();o=b.clientX-s.left,p=b.clientY-s.top}return b.deltaX=l,b.deltaY=m,b.deltaFactor=f,b.offsetX=o,b.offsetY=p,b.deltaMode=0,h.unshift(b,j,l,m),e&&clearTimeout(e),e=setTimeout(c,200),(a.event.dispatch||a.event.handle).apply(this,h)}}function c(){f=null}function d(a,b){return k.settings.adjustOldDeltas&&"mousewheel"===a.type&&b%120===0}var e,f,g=["wheel","mousewheel","DOMMouseScroll","MozMousePixelScroll"],h="onwheel"in document||document.documentMode>=9?["wheel"]:["mousewheel","DomMouseScroll","MozMousePixelScroll"],i=Array.prototype.slice;if(a.event.fixHooks)for(var j=g.length;j;)a.event.fixHooks[g[--j]]=a.event.mouseHooks;var k=a.event.special.mousewheel={version:"3.1.11",setup:function(){if(this.addEventListener)for(var c=h.length;c;)this.addEventListener(h[--c],b,!1);else this.onmousewheel=b;a.data(this,"mousewheel-line-height",k.getLineHeight(this)),a.data(this,"mousewheel-page-height",k.getPageHeight(this))},teardown:function(){if(this.removeEventListener)for(var c=h.length;c;)this.removeEventListener(h[--c],b,!1);else this.onmousewheel=null;a.removeData(this,"mousewheel-line-height"),a.removeData(this,"mousewheel-page-height")},getLineHeight:function(b){var c=a(b)["offsetParent"in a.fn?"offsetParent":"parent"]();return c.length||(c=a("body")),parseInt(c.css("fontSize"),10)},getPageHeight:function(b){return a(b).height()},settings:{adjustOldDeltas:!0,normalizeOffset:!0}};a.fn.extend({mousewheel:function(a){return a?this.bind("mousewheel",a):this.trigger("mousewheel")},unmousewheel:function(a){return this.unbind("mousewheel",a)}})});
\ No newline at end of file
diff --git a/public/vendor/md-toc.js b/public/vendor/md-toc.js
new file mode 100755
index 00000000..e46afad9
--- /dev/null
+++ b/public/vendor/md-toc.js
@@ -0,0 +1,121 @@
+/**
+ * md-toc.js v1.0.2
+ * https://github.com/yijian166/md-toc.js
+ */
+
+(function (window) {
+    function Toc(id, options) {
+        this.el = document.getElementById(id);
+        if (!this.el) return;
+        this.options = options || {};
+        this.tocLevel = parseInt(options.level) || 0;
+        this.tocClass = options['class'] || 'toc';
+        this.tocTop = parseInt(options.top) || 0;
+        this.elChilds = this.el.children;
+        if (!this.elChilds.length) return;
+        this._init();
+    }
+
+    Toc.prototype._init = function () {
+        this._collectTitleElements();
+        this._createTocContent();
+        this._showToc();
+    };
+
+    Toc.prototype._collectTitleElements = function () {
+        this._elTitlesNames = [],
+            this.elTitleElements = [];
+        for (var i = 1; i < 7; i++) {
+            if (this.el.getElementsByTagName('h' + i).length) {
+                this._elTitlesNames.push('h' + i);
+            }
+        }
+
+        this._elTitlesNames.length = this._elTitlesNames.length > this.tocLevel ? this.tocLevel : this._elTitlesNames.length;
+
+        for (var j = 0; j < this.elChilds.length; j++) {
+            this._elChildName = this.elChilds[j].tagName.toLowerCase();
+            if (this._elTitlesNames.toString().match(this._elChildName)) {
+                this.elTitleElements.push(this.elChilds[j]);
+            }
+        }
+    };
+
+    Toc.prototype._createTocContent = function () {
+        this._elTitleElementsLen = this.elTitleElements.length;
+        if (!this._elTitleElementsLen) return;
+        this.tocContent = '';
+        this._tempLists = [];
+
+        var url = location.origin + location.pathname;
+        for (var i = 0; i < this._elTitleElementsLen; i++) {
+            var j = i + 1;
+            this._elTitleElement = this.elTitleElements[i];
+            this._elTitleElementName = this._elTitleElement.tagName;
+            this._elTitleElementText = this._elTitleElement.innerHTML.replace(/<(?:.|\n)*?>/gm, '');
+            var id = this._elTitleElement.getAttribute('id');
+            if (!id) {
+                this._elTitleElement.setAttribute('id', 'tip' + i);
+                id = '#tip' + i;
+            } else {
+                id = '#' + id;
+            }
+
+            this.tocContent += '<li><a href="' + id + '">' + this._elTitleElementText + '</a>';
+
+            if (j != this._elTitleElementsLen) {
+                this._elNextTitleElementName = this.elTitleElements[j].tagName;
+                if (this._elTitleElementName != this._elNextTitleElementName) {
+                    var checkColse = false,
+                        y = 1;
+                    for (var t = this._tempLists.length - 1; t >= 0; t--) {
+                        if (this._tempLists[t].tagName == this._elNextTitleElementName) {
+                            checkColse = true;
+                            break;
+                        }
+                        y++;
+                    }
+                    if (checkColse) {
+                        this.tocContent += new Array(y + 1).join('</li></ul>');
+                        this._tempLists.length = this._tempLists.length - y;
+                    } else {
+                        this._tempLists.push(this._elTitleElement);
+                        this.tocContent += '<ul class="nav">';
+                    }
+                } else {
+                    this.tocContent += '</li>';
+                }
+            } else {
+                if (this._tempLists.length) {
+                    this.tocContent += new Array(this._tempLists.length + 1).join('</li></ul>');
+                } else {
+                    this.tocContent += '</li>';
+                }
+            }
+        }
+        this.tocContent = '<ul class="nav">' + this.tocContent + '</ul>';
+    };
+
+    Toc.prototype._showToc = function () {
+        this.toc = document.createElement('div');
+        this.toc.innerHTML = this.tocContent;
+        this.toc.setAttribute('class', this.tocClass);
+        if (!this.options.targetId) {
+            this.el.appendChild(this.toc);
+        } else {
+            document.getElementById(this.options.targetId).appendChild(this.toc);
+        }
+        var self = this;
+        if (this.tocTop > -1) {
+            window.onscroll = function () {
+                var t = document.documentElement.scrollTop || document.body.scrollTop;
+                if (t < self.tocTop) {
+                    self.toc.setAttribute('style', 'position:absolute;top:' + self.tocTop + 'px;');
+                } else {
+                    self.toc.setAttribute('style', 'position:fixed;top:10px;');
+                }
+            }
+        }
+    };
+    window.Toc = Toc;
+})(window);
\ No newline at end of file
diff --git a/public/vendor/md5.min.js b/public/vendor/md5.min.js
new file mode 100755
index 00000000..11b15456
--- /dev/null
+++ b/public/vendor/md5.min.js
@@ -0,0 +1 @@
+!function(a){"use strict";function b(a,b){var c=(65535&a)+(65535&b),d=(a>>16)+(b>>16)+(c>>16);return d<<16|65535&c}function c(a,b){return a<<b|a>>>32-b}function d(a,d,e,f,g,h){return b(c(b(b(d,a),b(f,h)),g),e)}function e(a,b,c,e,f,g,h){return d(b&c|~b&e,a,b,f,g,h)}function f(a,b,c,e,f,g,h){return d(b&e|c&~e,a,b,f,g,h)}function g(a,b,c,e,f,g,h){return d(b^c^e,a,b,f,g,h)}function h(a,b,c,e,f,g,h){return d(c^(b|~e),a,b,f,g,h)}function i(a,c){a[c>>5]|=128<<c%32,a[(c+64>>>9<<4)+14]=c;var d,i,j,k,l,m=1732584193,n=-271733879,o=-1732584194,p=271733878;for(d=0;d<a.length;d+=16)i=m,j=n,k=o,l=p,m=e(m,n,o,p,a[d],7,-680876936),p=e(p,m,n,o,a[d+1],12,-389564586),o=e(o,p,m,n,a[d+2],17,606105819),n=e(n,o,p,m,a[d+3],22,-1044525330),m=e(m,n,o,p,a[d+4],7,-176418897),p=e(p,m,n,o,a[d+5],12,1200080426),o=e(o,p,m,n,a[d+6],17,-1473231341),n=e(n,o,p,m,a[d+7],22,-45705983),m=e(m,n,o,p,a[d+8],7,1770035416),p=e(p,m,n,o,a[d+9],12,-1958414417),o=e(o,p,m,n,a[d+10],17,-42063),n=e(n,o,p,m,a[d+11],22,-1990404162),m=e(m,n,o,p,a[d+12],7,1804603682),p=e(p,m,n,o,a[d+13],12,-40341101),o=e(o,p,m,n,a[d+14],17,-1502002290),n=e(n,o,p,m,a[d+15],22,1236535329),m=f(m,n,o,p,a[d+1],5,-165796510),p=f(p,m,n,o,a[d+6],9,-1069501632),o=f(o,p,m,n,a[d+11],14,643717713),n=f(n,o,p,m,a[d],20,-373897302),m=f(m,n,o,p,a[d+5],5,-701558691),p=f(p,m,n,o,a[d+10],9,38016083),o=f(o,p,m,n,a[d+15],14,-660478335),n=f(n,o,p,m,a[d+4],20,-405537848),m=f(m,n,o,p,a[d+9],5,568446438),p=f(p,m,n,o,a[d+14],9,-1019803690),o=f(o,p,m,n,a[d+3],14,-187363961),n=f(n,o,p,m,a[d+8],20,1163531501),m=f(m,n,o,p,a[d+13],5,-1444681467),p=f(p,m,n,o,a[d+2],9,-51403784),o=f(o,p,m,n,a[d+7],14,1735328473),n=f(n,o,p,m,a[d+12],20,-1926607734),m=g(m,n,o,p,a[d+5],4,-378558),p=g(p,m,n,o,a[d+8],11,-2022574463),o=g(o,p,m,n,a[d+11],16,1839030562),n=g(n,o,p,m,a[d+14],23,-35309556),m=g(m,n,o,p,a[d+1],4,-1530992060),p=g(p,m,n,o,a[d+4],11,1272893353),o=g(o,p,m,n,a[d+7],16,-155497632),n=g(n,o,p,m,a[d+10],23,-1094730640),m=g(m,n,o,p,a[d+13],4,681279174),p=g(p,m,n,o,a[d],11,-358537222),o=g(o,p,m,n,a[d+3],16,-722521979),n=g(n,o,p,m,a[d+6],23,76029189),m=g(m,n,o,p,a[d+9],4,-640364487),p=g(p,m,n,o,a[d+12],11,-421815835),o=g(o,p,m,n,a[d+15],16,530742520),n=g(n,o,p,m,a[d+2],23,-995338651),m=h(m,n,o,p,a[d],6,-198630844),p=h(p,m,n,o,a[d+7],10,1126891415),o=h(o,p,m,n,a[d+14],15,-1416354905),n=h(n,o,p,m,a[d+5],21,-57434055),m=h(m,n,o,p,a[d+12],6,1700485571),p=h(p,m,n,o,a[d+3],10,-1894986606),o=h(o,p,m,n,a[d+10],15,-1051523),n=h(n,o,p,m,a[d+1],21,-2054922799),m=h(m,n,o,p,a[d+8],6,1873313359),p=h(p,m,n,o,a[d+15],10,-30611744),o=h(o,p,m,n,a[d+6],15,-1560198380),n=h(n,o,p,m,a[d+13],21,1309151649),m=h(m,n,o,p,a[d+4],6,-145523070),p=h(p,m,n,o,a[d+11],10,-1120210379),o=h(o,p,m,n,a[d+2],15,718787259),n=h(n,o,p,m,a[d+9],21,-343485551),m=b(m,i),n=b(n,j),o=b(o,k),p=b(p,l);return[m,n,o,p]}function j(a){var b,c="";for(b=0;b<32*a.length;b+=8)c+=String.fromCharCode(a[b>>5]>>>b%32&255);return c}function k(a){var b,c=[];for(c[(a.length>>2)-1]=void 0,b=0;b<c.length;b+=1)c[b]=0;for(b=0;b<8*a.length;b+=8)c[b>>5]|=(255&a.charCodeAt(b/8))<<b%32;return c}function l(a){return j(i(k(a),8*a.length))}function m(a,b){var c,d,e=k(a),f=[],g=[];for(f[15]=g[15]=void 0,e.length>16&&(e=i(e,8*a.length)),c=0;16>c;c+=1)f[c]=909522486^e[c],g[c]=1549556828^e[c];return d=i(f.concat(k(b)),512+8*b.length),j(i(g.concat(d),640))}function n(a){var b,c,d="0123456789abcdef",e="";for(c=0;c<a.length;c+=1)b=a.charCodeAt(c),e+=d.charAt(b>>>4&15)+d.charAt(15&b);return e}function o(a){return unescape(encodeURIComponent(a))}function p(a){return l(o(a))}function q(a){return n(p(a))}function r(a,b){return m(o(a),o(b))}function s(a,b){return n(r(a,b))}function t(a,b,c){return b?c?r(b,a):s(b,a):c?p(a):q(a)}"function"==typeof define&&define.amd?define(function(){return t}):a.md5=t}(this);
\ No newline at end of file
diff --git a/public/vendor/showup/showup.css b/public/vendor/showup/showup.css
new file mode 100755
index 00000000..d92523fa
--- /dev/null
+++ b/public/vendor/showup/showup.css
@@ -0,0 +1,125 @@
+/*
+ * Showup.js jQuery Plugin
+ * http://github.com/jonschlinkert/showup
+ *
+ * Copyright (c) 2013 Jon Schlinkert, contributors
+ * Licensed under the MIT License (MIT).
+ */
+
+/**
+ * Docs navbar transitions effects
+ */
+
+.navbar-tall,
+.navbar-show {
+  -webkit-transition: -webkit-transform .3s;
+     -moz-transition:    -moz-transform .3s;
+       -o-transition:      -o-transform .3s;
+          transition:         transform .3s;
+  -webkit-transform: translate(0, 0);
+      -ms-transform: translate(0, 0);
+          transform: translate(0, 0);
+}
+
+.navbar-hide {
+  -webkit-transition: -webkit-transform .2s;
+     -moz-transition:    -moz-transform .2s;
+       -o-transition:      -o-transform .2s;
+          transition:         transform .2s;
+  -webkit-transform: translate(0, -60px);
+      -ms-transform: translate(0, -60px);
+          transform: translate(0, -60px);
+}
+
+
+.navbar-tall,
+.navbar-short,
+.navbar-tall .navbar-brand,
+.navbar-short .navbar-brand,
+.navbar-tall .navbar-nav > li > a,
+.navbar-short .navbar-nav > li > a {
+  -webkit-transition: all 0.2s linear;
+          transition: all 0.2s linear;
+}
+
+.navbar-short {
+  min-height: 40px;
+}
+.navbar-short .navbar-brand {
+  font-size: 16px;
+  padding: 13px 15px 10px;
+}
+.navbar-short .navbar-nav > li > a {
+  padding-top: 12px;
+  padding-bottom: 12px;
+}
+
+
+.navbar-tall {
+  min-height: 70px;
+}
+.navbar-tall .navbar-brand {
+  font-size: 24px;
+  padding: 25px 15px;
+}
+.navbar-tall .navbar-nav > li > a {
+  padding-top: 25px;
+}
+
+
+
+/**
+ * Docs Buttons
+ */
+
+/* Fixed button, bottom right */
+.btn-fixed-bottom {
+  position: fixed;
+  bottom: 30px;
+  display: none;
+  z-index: 5;
+  width: 40px;
+  height: 40px;
+}
+
+/* Toggles navbar classes */
+.btn-hide-show {
+  margin-right: 10px;
+}
+
+/* Light theme */
+.btn-light {
+  color: #555;
+  background-color: rgba(0, 0, 0,.1);
+}
+.btn-light:hover {
+  color: #111;
+  background-color: rgba(0, 0, 0,.25);
+}
+
+/* Dark theme */
+.btn-dark {
+  color: #fff;
+  background-color: rgba(0, 0, 0,.5);
+}
+.btn-dark:hover {
+  color: #fff;
+  background-color: rgba(0, 0, 0,.9);
+}
+
+/* Buttons displayed throughout the content */
+.btn-showup {
+  position: relative;
+  color: #fff;
+  font-weight: normal;
+  background-color: #463265;
+  border-color: #3F2961;
+}
+
+.btn-showup:hover,
+.btn-showup:focus {
+  color: #fff;
+  outline: none;
+  background-color: #39235A;
+  border-color: #39235A;
+}
\ No newline at end of file
diff --git a/public/vendor/showup/showup.js b/public/vendor/showup/showup.js
new file mode 100755
index 00000000..f4f2267e
--- /dev/null
+++ b/public/vendor/showup/showup.js
@@ -0,0 +1,87 @@
+/*
+ * Showup.js jQuery Plugin
+ * http://github.com/jonschlinkert/showup
+ *
+ * Copyright (c) 2013 Jon Schlinkert, contributors
+ * Licensed under the MIT License (MIT).
+ */
+
+
+(function( $ ) {
+  $.fn.showUp = function(ele, options) {
+    options = options || {};
+
+    var target         = $(ele);
+    var down           = options.down        || 'navbar-hide';
+    var up             = options.up          || 'navbar-show';
+    var btnHideShow    = options.btnHideShow || '.btn-hide-show';
+    var hideOffset     = options.offset      || 60;
+    var previousScroll = 0;
+	var isHide		   = false;
+
+    $(window).scroll(function () {
+		checkScrollTop();
+    });
+	
+	$(window).resize(function () {
+		checkScrollTop();
+    });
+	
+	$(window).mousewheel(function () {
+		checkScrollTop();
+    });
+	
+	function checkScrollTop()
+	{
+		target.clearQueue();
+		target.stop();
+	  var currentScroll = $(this).scrollTop();
+      if (currentScroll > hideOffset) {
+          if(Math.abs(previousScroll - currentScroll) < 50) return;
+        if (currentScroll > previousScroll) {
+          // Action on scroll down
+		  target.removeClass(up).addClass(down);
+        } else if (currentScroll < previousScroll) {
+          // Action on scroll up
+		  target.removeClass(down).addClass(up);
+        }
+      } else {
+		target.removeClass(down).addClass(up);
+	  }
+      previousScroll = $(this).scrollTop();
+	}
+
+    // Toggle visibility of target on click
+    $(btnHideShow).click(function () {
+      if (target.hasClass(down)) {
+        target.removeClass(down).addClass(up);
+      } else {
+        target.removeClass(up).addClass(down);
+      }
+    });
+  };
+})( jQuery );
+
+// TODO: make customizable
+$(document).ready(function () {
+  var duration      = 420;
+  var showOffset    = 220;
+  var btnFixed      = '.btn-fixed-bottom';
+  var btnToTopClass = '.back-to-top';
+
+  $(window).scroll(function () {
+    if ($(this).scrollTop() > showOffset) {
+      $(btnFixed).fadeIn(duration);
+    } else {
+      $(btnFixed).fadeOut(duration);
+    }
+  });
+
+  $(btnToTopClass).click(function (event) {
+    event.preventDefault();
+    $('html, body').animate({
+      scrollTop: 0
+    }, duration);
+    return false;
+  });
+});
\ No newline at end of file
diff --git a/public/views/body.ejs b/public/views/body.ejs
index 4237746b..bf713cba 100644
--- a/public/views/body.ejs
+++ b/public/views/body.ejs
@@ -3,7 +3,31 @@
         <textarea id="textit"></textarea>
     </div>
     <div class="ui-view-area">
-        <div class="markdown-body container-fluid"></div>
+        <div class="ui-infobar container-fluid">
+            <small>
+                <span class="ui-lastchange text-uppercase"></span>
+                <span class="ui-permission dropdown pull-right">
+                    <a id="permissionLabel" class="ui-permission-label text-uppercase" data-target="#" data-toggle="dropdown" href="#" role="button" aria-haspopup="true" aria-expanded="false">
+                    </a>
+                    <ul class="dropdown-menu" aria-labelledby="permissionLabel">
+                        <li class="ui-permission-freely"><a><i class="fa fa-leaf fa-fw"></i> Freely - Anyone can edit</a></li>
+                        <li class="ui-permission-editable"><a><i class="fa fa-pencil fa-fw"></i> Editable - Signed people can edit</a></li>
+                        <li class="ui-permission-locked"><a><i class="fa fa-lock fa-fw"></i> Locked - Only owner can edit</a></li>
+                    </ul>
+                </span>
+            </small>
+        </div>
+        <div id="doc" class="markdown-body container-fluid"></div>
+        <div class="ui-toc dropup" style="display:none;">
+            <div class="pull-right dropdown">
+                <a id="tocLabel" class="ui-toc-label btn btn-default" data-target="#" data-toggle="dropdown" href="#" role="button" aria-haspopup="true" aria-expanded="false" title="Table of content">
+                    <i class="fa fa-bars"></i>
+                </a>
+                <ul id="toc" class="ui-toc-dropdown dropdown-menu" aria-labelledby="tocLabel">
+                </ul>
+            </div>
+        </div>
+        <div id="toc-affix" class="ui-affix-toc ui-toc-dropdown" data-spy="affix" style="top:50px;display:none;"></div>
     </div>
 </div>
 <div class="modal fade" id="clipboardModal" tabindex="-1" role="dialog" aria-labelledby="myModalLabel" aria-hidden="true">
@@ -24,4 +48,66 @@
             </div>
         </div>
     </div>
+</div>
+<div class="modal fade" id="refreshModal" tabindex="-1" role="dialog" aria-labelledby="myModalLabel" aria-hidden="true">
+    <div class="modal-dialog modal-sm">
+        <div class="modal-content">
+            <div class="modal-header">
+                <button type="button" class="close" data-dismiss="modal" aria-label="Close"><span aria-hidden="true">&times;</span>
+                </button>
+                <h4 class="modal-title" id="myModalLabel">This page need refresh</h4>
+            </div>
+            <div class="modal-body">
+                <h5>This page have a mismatch client version or incorrect user state.</h5>
+                <strong>Please refresh this page.</strong>
+            </div>
+            <div class="modal-footer">
+                <button type="button" class="btn btn-primary" id="refreshModalRefresh">Refresh</button>
+            </div>
+        </div>
+    </div>
+</div>
+<!-- signin modal -->
+<div class="modal fade signin-modal" tabindex="-1" role="dialog" aria-labelledby="mySmallModalLabel" aria-hidden="true">
+    <div class="modal-dialog modal-sm">
+        <div class="modal-content">
+            <div class="modal-header">
+                <button type="button" class="close" data-dismiss="modal" aria-label="Close"><span aria-hidden="true">&times;</span>
+                </button>
+                <h4 class="modal-title" id="mySmallModalLabel">Please sign in to edit</h4>
+            </div>
+            <div class="modal-body">
+                <a href="/auth/facebook" class="btn btn-lg btn-block btn-social btn-facebook">
+                    <i class="fa fa-facebook"></i> Sign in via Facebook
+                </a>
+                <a href="/auth/twitter" class="btn btn-lg btn-block btn-social btn-twitter">
+                    <i class="fa fa-twitter"></i> Sign in via Twitter
+                </a>
+                <a href="/auth/github" class="btn btn-lg btn-block btn-social btn-github">
+                    <i class="fa fa-github"></i> Sign in via GitHub
+                </a>
+                <a href="/auth/dropbox" class="btn btn-lg btn-block btn-social btn-dropbox">
+                    <i class="fa fa-dropbox"></i> Sign in via Dropbox
+                </a>
+            </div>
+        </div>
+    </div>
+</div>
+<!-- locked modal -->
+<div class="modal fade locked-modal" tabindex="-1" role="dialog" aria-labelledby="myModalLabel" aria-hidden="true">
+    <div class="modal-dialog modal-sm">
+        <div class="modal-content">
+            <div class="modal-header">
+                <button type="button" class="close" data-dismiss="modal" aria-label="Close"><span aria-hidden="true">&times;</span>
+                </button>
+                <h4 class="modal-title" id="myModalLabel"><i class="fa fa-lock"></i> This note is locked</h4>
+            </div>
+            <div class="modal-body" style="color:black;">
+                <h5>Sorry, only owner can edit this note.</h5>
+            </div>
+            <div class="modal-footer">
+                <button type="button" class="btn btn-danger" data-dismiss="modal">OK</button>
+            </div>
+        </div>
+    </div>
 </div>
\ No newline at end of file
diff --git a/public/views/foot.ejs b/public/views/foot.ejs
index 8ef3cc21..0e808e6a 100644
--- a/public/views/foot.ejs
+++ b/public/views/foot.ejs
@@ -1,5 +1,6 @@
 <script src="/vendor/spin.min.js" defer></script>
 <script src="/vendor/jquery-1.11.2.min.js" defer></script>
+<script src="/vendor/jquery.mousewheel.min.js" defer></script>
 <script src="/vendor/bootstrap/js/bootstrap.min.js" defer></script>
 <script src="/vendor/greensock-js/TweenMax.min.js" defer></script>
 <script src="/vendor/greensock-js/jquery.gsap.min.js" defer></script>
@@ -13,6 +14,7 @@
 <script src="/vendor/remarkable-regex.js" defer></script>
 <script src="/vendor/gist-embed.js" defer></script>
 <script src="/vendor/lz-string.min.js" defer></script>
+<script src="/vendor/string.min.js" defer></script>
 <script src="/vendor/highlight-js/highlight.min.js" defer></script>
 <script src="/vendor/js.cookie.js" defer></script>
 <script src="/vendor/moment-with-locales.js" defer></script>
@@ -29,6 +31,9 @@
 <script src="/vendor/idle.js" defer></script>
 <script src="/vendor/visibility-1.2.1.min.js" defer></script>
 <script src="/vendor/list.min.js" defer></script>
+<script src="/vendor/md5.min.js" defer></script>
+<script src="/vendor/md-toc.js" defer></script>
+<script src="/vendor/showup/showup.js" defer></script>
 <script type="text/javascript" src="https://www.dropbox.com/static/api/2/dropins.js" id="dropboxjs" data-app-key="rdoizrlnkuha23r" async defer></script>
 <script type="text/x-mathjax-config">
     MathJax.Hub.Config({ messageStyle: "none", skipStartupTypeset: true ,tex2jax: {inlineMath: [['$','$'], ['\\(','\\)']], processEscapes: true }});
diff --git a/public/views/head.ejs b/public/views/head.ejs
index cb48e291..0518ebc7 100644
--- a/public/views/head.ejs
+++ b/public/views/head.ejs
@@ -4,9 +4,7 @@
 <meta name="apple-mobile-web-app-capable" content="yes">
 <meta name="apple-mobile-web-app-status-bar-style" content="black">
 <meta name="mobile-web-app-capable" content="yes">
-<meta name="description" content="Realtime collaborative markdown notes on all platforms.">
-<meta name="author" content="jackycute">
-<title>HackMD - Collaborative notes</title>
+<title><%- title %></title>
 <link rel="icon" type="image/png" href="/favicon.png">
 <link rel="apple-touch-icon" href="/apple-touch-icon.png">
 <link rel="stylesheet" href="/vendor/bootstrap/css/bootstrap.min.css">
@@ -19,8 +17,10 @@
 <link rel="stylesheet" href="/vendor/codemirror/theme/monokai.css">
 <link rel="stylesheet" href="/css/github-extract.css">
 <link rel="stylesheet" href="/css/gist.css">
-<link rel="stylesheet" href="/vendor/highlight-js/github.min.css">
+<link rel="stylesheet" href="/vendor/highlight-js/github-gist.min.css">
 <link rel="stylesheet" href="/vendor/emojify/css/emojify.min.css">
+<link rel="stylesheet" href="/vendor/showup/showup.css">
+<link rel="stylesheet" href="/css/bootstrap-social.css">
 <link rel="stylesheet" href="/css/markdown.css">
 <link rel="stylesheet" href="/css/index.css">
 <link rel="stylesheet" href="/css/extra.css">
diff --git a/public/views/header.ejs b/public/views/header.ejs
index b8f5074e..7aee5351 100644
--- a/public/views/header.ejs
+++ b/public/views/header.ejs
@@ -13,15 +13,18 @@
             <ul class="dropdown-menu list" role="menu" aria-labelledby="menu">
             </ul>
         </div>
-        <a class="navbar-brand" href="./"><i class="fa fa-file-text"></i> HackMD</a>
+        <a class="navbar-brand" href="/"><i class="fa fa-file-text"></i> HackMD</a>
         <div class="nav-mobile pull-right visible-xs">
+            <span class="btn btn-link btn-file ui-upload-image" title="Upload Image" style="display:none;">
+                <i class="fa fa-camera"></i><input type="file" accept="image/*" name="upload" multiple>
+            </span>
             <a data-target="#" data-toggle="dropdown" class="btn btn-link">
                 <i class="fa fa-caret-down"></i>
             </a>
             <ul class="dropdown-menu" role="menu" aria-labelledby="menu">
                 <li role="presentation"><a role="menuitem" class="ui-new" tabindex="-1" href="./new" target="_blank"><i class="fa fa-plus fa-fw"></i> New</a>
                 </li>
-                <li role="presentation"><a role="menuitem" class="ui-pretty" tabindex="-1" href="#" target="_blank"><i class="fa fa-share-alt fa-fw"></i> Share</a>
+                <li role="presentation"><a role="menuitem" class="ui-share" tabindex="-1" href="#" target="_blank"><i class="fa fa-share-alt fa-fw"></i> Share</a>
                 </li>
                 <li class="divider"></li>
                 <li class="dropdown-header">Save</li>
@@ -62,6 +65,9 @@
             <a href="https://www.facebook.com/messages/866415986748945" class="btn btn-link ui-feedback" title="Feedback" target="_blank">
                 <i class="fa fa-bullhorn"></i>
             </a>
+            <span class="btn btn-link btn-file ui-upload-image" title="Upload Image" style="display:none;">
+                <i class="fa fa-camera"></i><input type="file" accept="image/*" name="upload" multiple>
+            </span>
         </ul>
         <ul class="nav navbar-nav navbar-right">
             <li id="online-user-list">
@@ -79,7 +85,7 @@
                 </a>
             </li>
             <li>
-                <a href="#" target="_blank" class="ui-pretty">
+                <a href="#" target="_blank" class="ui-share">
                     <i class="fa fa-share-alt"></i> Share
                 </a>
             </li>
diff --git a/public/views/pretty.ejs b/public/views/pretty.ejs
index 690c7604..cc4f80d2 100644
--- a/public/views/pretty.ejs
+++ b/public/views/pretty.ejs
@@ -4,43 +4,62 @@
 <head>
     <meta charset="utf-8">
     <meta http-equiv="X-UA-Compatible" content="IE=edge">
-    <title>
-        HackMD - Collaborative notes
-    </title>
+    <meta name="viewport" content="width=device-width, initial-scale=1.0, user-scalable=no">
+    <meta name="apple-mobile-web-app-capable" content="yes">
+    <meta name="apple-mobile-web-app-status-bar-style" content="black">
+    <meta name="mobile-web-app-capable" content="yes">
+    <title><%- title %></title>
     <link rel="icon" type="image/png" href="<%- url %>/favicon.png">
 <link rel="apple-touch-icon" href="<%- url %>/apple-touch-icon.png">
     <link rel="stylesheet" href='<%- url %>/vendor/bootstrap/css/bootstrap.min.css'>
     <link rel="stylesheet" href='<%- url %>/vendor/font-awesome/css/font-awesome.min.css'>
     <link rel="stylesheet" href='<%- url %>/css/github-extract.css'>
     <link rel="stylesheet" href='<%- url %>/css/gist.css'>
-    <link rel="stylesheet" href='<%- url %>/vendor/highlight-js/github.min.css'>
+    <link rel="stylesheet" href='<%- url %>/vendor/highlight-js/github-gist.min.css'>
     <link rel="stylesheet" href='<%- url %>/css/markdown.css'>
     <link rel="stylesheet" href='<%- url %>/vendor/emojify/css/emojify.min.css'>
     <link rel="stylesheet" href='<%- url %>/css/extra.css'>
     <link rel="stylesheet" href='<%- url %>/css/site.css'>
 </head>
 
-<body>
-    <div class="container markdown-body" style="display:none;">
+<body style="display:none;">
+    <div class="ui-infobar container-fluid">
+        <small>
+            <span class="ui-lastchange text-uppercase"><%- updatetime %></span>
+            <span class="pull-right"><%- viewcount %> views <a href="#" class="ui-edit" title="Edit this note"><i class="fa fa-pencil"></i></a></span>
+        </small>
+    </div>
+    <div id="doc" class="container markdown-body">
 <%- body %>
     </div>
+    <div class="ui-toc dropup" style="display:none;">
+        <div class="pull-right dropdown">
+            <a id="tocLabel" class="ui-toc-label btn btn-default" data-target="#" data-toggle="dropdown" href="#" role="button" aria-haspopup="true" aria-expanded="false" title="Table of content">
+                <i class="fa fa-bars"></i>
+            </a>
+            <ul id="toc" class="ui-toc-dropdown dropdown-menu" aria-labelledby="tocLabel">
+            </ul>
+        </div>
+    </div>
+    <div id="toc-affix" class="ui-affix-toc ui-toc-dropdown" data-spy="affix" style="display:none;"></div>
 </body>
 
 </html>
-<!--<script src="<%- url %>/js/ga.js" async defer></script>-->
-<!--<script src="<%- url %>/js/newrelic.js" async defer></script>-->
 <script src="<%- url %>/vendor/jquery-1.11.2.min.js" defer></script>
+<script src="<%- url %>/vendor/bootstrap/js/bootstrap.min.js" defer></script>
 <script src="<%- url %>/vendor/lz-string.min.js" defer></script>
 <script src="<%- url %>/vendor/remarkable.min.js" defer></script>
 <script src="<%- url %>/vendor/remarkable-regex.js" defer></script>
 <script src="<%- url %>/vendor/gist-embed.js" defer></script>
 <script src="<%- url %>/vendor/string.min.js" defer></script>
 <script src="<%- url %>/vendor/highlight-js/highlight.min.js" defer></script>
+<script src="<%- url %>/vendor/moment-with-locales.js" defer></script>
 <script src="<%- url %>/vendor/emojify/js/emojify.min.js" defer></script>
 <script src="<%- url %>/vendor/raphael-min.js" defer></script>
 <script src="<%- url %>/vendor/lodash.min.js" defer></script>
 <script src="<%- url %>/vendor/sequence-diagrams/sequence-diagram-min.js" defer></script>
 <script src="<%- url %>/vendor/flowchart/flowchart-1.4.0.min.js" defer></script>
+<script src="<%- url %>/vendor/md-toc.js" defer></script>
 <script type="text/x-mathjax-config">
     MathJax.Hub.Config({ messageStyle: "none", skipStartupTypeset: true ,tex2jax: {inlineMath: [['$','$'], ['\\(','\\)']], processEscapes: true }});
 </script>
diff --git a/run.sh b/run.sh
index 07c14622..386ce427 100644
--- a/run.sh
+++ b/run.sh
@@ -5,4 +5,4 @@ MONGOLAB_URI='change this' \
 PORT='80' \
 SSLPORT='443' \
 DOMAIN='change this' \
-forever -a --uid hackmd start app.js
\ No newline at end of file
+forever -a --uid hackmd -l ./logs/hackmd_log.log -o ./logs/hackmd_out.log -e ./logs/hackmd_error.log start app.js
\ No newline at end of file
diff --git a/tmp/.keep b/tmp/.keep
new file mode 100644
index 00000000..e69de29b
--- /dev/null
+++ b/tmp/.keep