Merge branch '25286-customer-label-doesn-t-autocomplete-correctly' into 'master'

Correct autocomplete for values with special characters

This adds a check for any special chars in any value passed to the `DefaultOptions.beforeInsert` callback function. If special chars are found and `skipSpecialCharTest` option is `false`, it will wrap the value in quotation marks.

This fixed autocompleting `~customer+` instead of `~"customer+"`.

![2016-12-03_10.37.11](/uploads/59159623638939933d23b447692775b8/2016-12-03_10.37.11.gif)

- [ ] [Changelog entry](https://docs.gitlab.com/ce/development/changelog.html) added
- [ ] [Documentation created/updated](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/doc/development/doc_styleguide.md)
- [ ] API support added
- Tests
  - [ ] Added for this feature/bug
  - [ ] All builds are passing
- [ ] Conform by the [merge request performance guides](http://docs.gitlab.com/ce/development/merge_request_performance_guidelines.html)
- [ ] Conform by the [style guides](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CONTRIBUTING.md#style-guides)
- [ ] Branch has no merge conflicts with `master` (if it does - rebase it please)
- [ ] [Squashed related commits together](https://git-scm.com/book/en/Git-Tools-Rewriting-History#Squashing-Commits)

Closes #25286, #24961

See merge request !7910

app/assets/javascripts/gfm_auto_complete.js.es6

@@ -48,6 +48,10 @@
         return $.fn.atwho["default"].callbacks.filter(query, data, searchKey);
       },
       beforeInsert: function(value) {
+        if (value && !this.setting.skipSpecialCharacterTest) {
+          var withoutAt = value.substring(1);
+          if (withoutAt && /[^\w\d]/.test(withoutAt)) value = value.charAt() + '"' + withoutAt + '"';
+        }
         if (!GitLab.GfmAutoComplete.dataLoaded) {
           return this.at;
         } else {
@@ -91,6 +95,7 @@
         })(this),
         insertTpl: ':${name}:',
         data: ['loading'],
+        skipSpecialCharacterTest: true,
         callbacks: {
           sorter: this.DefaultOptions.sorter,
           filter: this.DefaultOptions.filter,
@@ -113,6 +118,7 @@
         searchKey: 'search',
         data: ['loading'],
         alwaysHighlightFirst: true,
+        skipSpecialCharacterTest: true,
         callbacks: {
           sorter: this.DefaultOptions.sorter,
           filter: this.DefaultOptions.filter,
@@ -188,10 +194,11 @@
             }
           };
         })(this),
-        insertTpl: '${atwho-at}"${title}"',
+        insertTpl: '${atwho-at}${title}',
         data: ['loading'],
         callbacks: {
           sorter: this.DefaultOptions.sorter,
+          beforeInsert: this.DefaultOptions.beforeInsert,
           beforeSave: function(milestones) {
             return $.map(milestones, function(m) {
               if (m.title == null) {
@@ -247,18 +254,11 @@
         insertTpl: '${atwho-at}${title}',
         callbacks: {
           sorter: this.DefaultOptions.sorter,
+          beforeInsert: this.DefaultOptions.beforeInsert,
           beforeSave: function(merges) {
-            var sanitizeLabelTitle;
-            sanitizeLabelTitle = function(title) {
-              if (/[\w\?&]+\s+[\w\?&]+/g.test(title)) {
-                return "\"" + (gl.utils.sanitize(title)) + "\"";
-              } else {
-                return gl.utils.sanitize(title);
-              }
-            };
             return $.map(merges, function(m) {
               return {
-                title: sanitizeLabelTitle(m.title),
+                title: sanitize(m.title),
                 color: m.color,
                 search: "" + m.title
               };
@@ -271,6 +271,7 @@
         at: '/',
         alias: 'commands',
         searchKey: 'search',
+        skipSpecialCharacterTest: true,
         displayTpl: function(value) {
           var tpl = '<li>/${name}';
           if (value.aliases.length > 0) {