Use native unicode emojis

 - gl_emoji for falling back to image/css-sprite when the browser
   doesn't support an emoji
 - Markdown rendering (Banzai filter)
 - Autocomplete
 - Award emoji menu
    - Perceived perf
    - Immediate response because we now build client-side
 - Update `digests.json` generation in gemojione rake task to be more
   useful and  include `unicodeVersion`

MR: !9437

See issues

 - #26371
 - #27250
 - #22474

app/assets/javascripts/behaviors/gl_emoji.js

+const installCustomElements = require('document-register-element');
+const emojiMap = require('emoji-map');
+const emojiAliases = require('emoji-aliases');
+const generatedUnicodeSupportMap = require('./gl_emoji/unicode_support_map');
+const spreadString = require('./gl_emoji/spread_string');
+
+installCustomElements(window);
+
+function emojiImageTag(name, src) {
+  return `<img class="emoji" title=":${name}:" alt=":${name}:" src="${src}" width="20" height="20" align="absmiddle" />`;
+}
+
+const glEmojiTagDefaults = {
+  sprite: false,
+  forceFallback: false,
+};
+function glEmojiTag(inputName, options) {
+  const opts = Object.assign({}, glEmojiTagDefaults, options);
+  const name = emojiAliases[inputName] || inputName;
+  const emojiInfo = emojiMap[name];
+  const fallbackImageSrc = `${gon.relative_url_root || ''}/assets/emoji/${name}-${emojiInfo.digest}.png`;
+  const fallbackSpriteClass = `emoji-${name}`;
+
+  const classList = [];
+  if (opts.forceFallback && opts.sprite) {
+    classList.push('emoji-icon');
+    classList.push(fallbackSpriteClass);
+  }
+  const classAttribute = classList.length > 0 ? `class="${classList.join(' ')}"` : '';
+  const fallbackSpriteAttribute = opts.sprite ? `data-fallback-sprite-class="${fallbackSpriteClass}"` : '';
+  let contents = emojiInfo.moji;
+  if (opts.forceFallback && !opts.sprite) {
+    contents = emojiImageTag(name, fallbackImageSrc);
+  }
+
+  return `
+  <gl-emoji
+    ${classAttribute}
+    data-name="${name}"
+    data-fallback-src="${fallbackImageSrc}"
+    ${fallbackSpriteAttribute}
+    data-unicode-version="${emojiInfo.unicodeVersion}"
+  >
+    ${contents}
+  </gl-emoji>
+  `;
+}
+
+// On Windows, flags render as two-letter country codes, see http://emojipedia.org/flags/
+const flagACodePoint = 127462; // parseInt('1F1E6', 16)
+const flagZCodePoint = 127487; // parseInt('1F1FF', 16)
+function isFlagEmoji(emojiUnicode) {
+  const cp = emojiUnicode.codePointAt(0);
+  // Length 4 because flags are made of 2 characters which are surrogate pairs
+  return emojiUnicode.length === 4 && cp >= flagACodePoint && cp <= flagZCodePoint;
+}
+
+// Chrome <57 renders keycaps oddly
+// See https://bugs.chromium.org/p/chromium/issues/detail?id=632294
+// Same issue on Windows also fixed in Chrome 57, http://i.imgur.com/rQF7woO.png
+function isKeycapEmoji(emojiUnicode) {
+  return emojiUnicode.length === 3 && emojiUnicode[2] === '\u20E3';
+}
+
+// Check for a skin tone variation emoji which aren't always supported
+const tone1 = 127995;// parseInt('1F3FB', 16)
+const tone5 = 127999;// parseInt('1F3FF', 16)
+function isSkinToneComboEmoji(emojiUnicode) {
+  return emojiUnicode.length > 2 && spreadString(emojiUnicode).some((char) => {
+    const cp = char.codePointAt(0);
+    return cp >= tone1 && cp <= tone5;
+  });
+}
+
+// macOS supports most skin tone emoji's but
+// doesn't support the skin tone versions of horse racing
+const horseRacingCodePoint = 127943;// parseInt('1F3C7', 16)
+function isHorceRacingSkinToneComboEmoji(emojiUnicode) {
+  return spreadString(emojiUnicode)[0].codePointAt(0) === horseRacingCodePoint &&
+    isSkinToneComboEmoji(emojiUnicode);
+}
+
+// Check for `family_*`, `kiss_*`, `couple_*`
+// For ex. Windows 8.1 Firefox 51.0.1, doesn't support these
+const zwj = 8205; // parseInt('200D', 16)
+const personStartCodePoint = 128102; // parseInt('1F466', 16)
+const personEndCodePoint = 128105; // parseInt('1F469', 16)
+function isPersonZwjEmoji(emojiUnicode) {
+  let hasPersonEmoji = false;
+  let hasZwj = false;
+  spreadString(emojiUnicode).forEach((character) => {
+    const cp = character.codePointAt(0);
+    if (cp === zwj) {
+      hasZwj = true;
+    } else if (cp >= personStartCodePoint && cp <= personEndCodePoint) {
+      hasPersonEmoji = true;
+    }
+  });
+
+  return hasPersonEmoji && hasZwj;
+}
+
+// Helper so we don't have to run `isFlagEmoji` twice
+// in `isEmojiUnicodeSupported` logic
+function checkFlagEmojiSupport(unicodeSupportMap, emojiUnicode) {
+  const isFlagResult = isFlagEmoji(emojiUnicode);
+  return (
+    (unicodeSupportMap.flag && isFlagResult) ||
+    !isFlagResult
+  );
+}
+
+// Helper so we don't have to run `isSkinToneComboEmoji` twice
+// in `isEmojiUnicodeSupported` logic
+function checkSkinToneModifierSupport(unicodeSupportMap, emojiUnicode) {
+  const isSkinToneResult = isSkinToneComboEmoji(emojiUnicode);
+  return (
+    (unicodeSupportMap.skinToneModifier && isSkinToneResult) ||
+    !isSkinToneResult
+  );
+}
+
+// Helper func so we don't have to run `isHorceRacingSkinToneComboEmoji` twice
+// in `isEmojiUnicodeSupported` logic
+function checkHorseRacingSkinToneComboEmojiSupport(unicodeSupportMap, emojiUnicode) {
+  const isHorseRacingSkinToneResult = isHorceRacingSkinToneComboEmoji(emojiUnicode);
+  return (
+    (unicodeSupportMap.horseRacing && isHorseRacingSkinToneResult) ||
+    !isHorseRacingSkinToneResult
+  );
+}
+
+// Helper so we don't have to run `isPersonZwjEmoji` twice
+// in `isEmojiUnicodeSupported` logic
+function checkPersonEmojiSupport(unicodeSupportMap, emojiUnicode) {
+  const isPersonZwjResult = isPersonZwjEmoji(emojiUnicode);
+  return (
+    (unicodeSupportMap.personZwj && isPersonZwjResult) ||
+    !isPersonZwjResult
+  );
+}
+
+// Takes in a support map and determines whether
+// the given unicode emoji is supported on the platform.
+//
+// Combines all the edge case tests into a one-stop shop method
+function isEmojiUnicodeSupported(unicodeSupportMap = {}, emojiUnicode, unicodeVersion) {
+  const isOlderThanChrome57 = unicodeSupportMap.meta && unicodeSupportMap.meta.isChrome &&
+    unicodeSupportMap.meta.chromeVersion < 57;
+
+  // For comments about each scenario, see the comments above each individual respective function
+  return unicodeSupportMap[unicodeVersion] &&
+    !(isOlderThanChrome57 && isKeycapEmoji(emojiUnicode)) &&
+    checkFlagEmojiSupport(unicodeSupportMap, emojiUnicode) &&
+    checkSkinToneModifierSupport(unicodeSupportMap, emojiUnicode) &&
+    checkHorseRacingSkinToneComboEmojiSupport(unicodeSupportMap, emojiUnicode) &&
+    checkPersonEmojiSupport(unicodeSupportMap, emojiUnicode);
+}
+
+const GlEmojiElementProto = Object.create(HTMLElement.prototype);
+GlEmojiElementProto.createdCallback = function createdCallback() {
+  const emojiUnicode = this.textContent.trim();
+  const {
+    unicodeVersion,
+    fallbackSrc,
+    fallbackSpriteClass,
+  } = this.dataset;
+
+  const isEmojiUnicode = this.childNodes && Array.prototype.every.call(
+    this.childNodes,
+    childNode => childNode.nodeType === 3,
+  );
+  const hasImageFallback = fallbackSrc && fallbackSrc.length > 0;
+  const hasCssSpriteFalback = fallbackSpriteClass && fallbackSpriteClass.length > 0;
+
+  if (
+    isEmojiUnicode &&
+    !isEmojiUnicodeSupported(generatedUnicodeSupportMap, emojiUnicode, unicodeVersion)
+  ) {
+    // CSS sprite fallback takes precedence over image fallback
+    if (hasCssSpriteFalback) {
+      // IE 11 doesn't like adding multiple at once :(
+      this.classList.add('emoji-icon');
+      this.classList.add(fallbackSpriteClass);
+    } else if (hasImageFallback) {
+      const emojiName = this.dataset.name;
+      this.innerHTML = emojiImageTag(emojiName, fallbackSrc);
+    }
+  }
+};
+
+document.registerElement('gl-emoji', {
+  prototype: GlEmojiElementProto,
+});
+
+module.exports = {
+  emojiImageTag,
+  glEmojiTag,
+  isEmojiUnicodeSupported,
+  isFlagEmoji,
+  isKeycapEmoji,
+  isSkinToneComboEmoji,
+  isHorceRacingSkinToneComboEmoji,
+  isPersonZwjEmoji,
+};

app/assets/javascripts/behaviors/gl_emoji/spread_string.js

+// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/charCodeAt#Fixing_charCodeAt()_to_handle_non-Basic-Multilingual-Plane_characters_if_their_presence_earlier_in_the_string_is_known
+function knownCharCodeAt(givenString, index) {
+  const str = `${givenString}`;
+  const end = str.length;
+
+  const surrogatePairs = /[\uD800-\uDBFF][\uDC00-\uDFFF]/g;
+  let idx = index;
+  while ((surrogatePairs.exec(str)) != null) {
+    const li = surrogatePairs.lastIndex;
+    if (li - 2 < idx) {
+      idx += 1;
+    } else {
+      break;
+    }
+  }
+
+  if (idx >= end || idx < 0) {
+    return NaN;
+  }
+
+  const code = str.charCodeAt(idx);
+
+  let high;
+  let low;
+  if (code >= 0xD800 && code <= 0xDBFF) {
+    high = code;
+    low = str.charCodeAt(idx + 1);
+    // Go one further, since one of the "characters" is part of a surrogate pair
+    return ((high - 0xD800) * 0x400) + (low - 0xDC00) + 0x10000;
+  }
+  return code;
+}
+
+// See http://stackoverflow.com/a/38901550/796832
+// ES5/PhantomJS compatible version of spreading a string
+//
+// [...'foo'] -> ['f', 'o', 'o']
+// [...'🖐🏿'] -> ['🖐', '🏿']
+function spreadString(str) {
+  const arr = [];
+  let i = 0;
+  while (!isNaN(knownCharCodeAt(str, i))) {
+    const codePoint = knownCharCodeAt(str, i);
+    arr.push(String.fromCodePoint(codePoint));
+    i += 1;
+  }
+  return arr;
+}
+
+module.exports = spreadString;

app/assets/javascripts/behaviors/gl_emoji/unicode_support_map.js

+const unicodeSupportTestMap = {
+  // man, student (emojione does not have any of these yet), http://emojipedia.org/emoji-zwj-sequences/
+  // occupationZwj: '\u{1F468}\u{200D}\u{1F393}',
+  // woman, biking (emojione does not have any of these yet), http://emojipedia.org/emoji-zwj-sequences/
+  // sexZwj: '\u{1F6B4}\u{200D}\u{2640}',
+  // family_mwgb
+  // Windows 8.1, Firefox 51.0.1 does not support `family_`, `kiss_`, `couple_`
+  personZwj: '\u{1F468}\u{200D}\u{1F469}\u{200D}\u{1F467}\u{200D}\u{1F466}',
+  // horse_racing_tone5
+  // Special case that is not supported on macOS 10.12 even though `skinToneModifier` succeeds
+  horseRacing: '\u{1F3C7}\u{1F3FF}',
+  // US flag, http://emojipedia.org/flags/
+  flag: '\u{1F1FA}\u{1F1F8}',
+  // http://emojipedia.org/modifiers/
+  skinToneModifier: [
+    // spy_tone5
+    '\u{1F575}\u{1F3FF}',
+    // person_with_ball_tone5
+    '\u{26F9}\u{1F3FF}',
+    // angel_tone5
+    '\u{1F47C}\u{1F3FF}',
+  ],
+  // rofl, http://emojipedia.org/unicode-9.0/
+  '9.0': '\u{1F923}',
+  // metal, http://emojipedia.org/unicode-8.0/
+  '8.0': '\u{1F918}',
+  // spy, http://emojipedia.org/unicode-7.0/
+  '7.0': '\u{1F575}',
+  // expressionless, http://emojipedia.org/unicode-6.1/
+  6.1: '\u{1F611}',
+  // japanese_goblin, http://emojipedia.org/unicode-6.0/
+  '6.0': '\u{1F47A}',
+  // sailboat, http://emojipedia.org/unicode-5.2/
+  5.2: '\u{26F5}',
+  // mahjong, http://emojipedia.org/unicode-5.1/
+  5.1: '\u{1F004}',
+  // gear, http://emojipedia.org/unicode-4.1/
+  4.1: '\u{2699}',
+  // zap, http://emojipedia.org/unicode-4.0/
+  '4.0': '\u{26A1}',
+  // recycle, http://emojipedia.org/unicode-3.2/
+  3.2: '\u{267B}',
+  // information_source, http://emojipedia.org/unicode-3.0/
+  '3.0': '\u{2139}',
+  // heart, http://emojipedia.org/unicode-1.1/
+  1.1: '\u{2764}',
+};
+
+function checkPixelInImageDataArray(pixelOffset, imageDataArray) {
+  // `4 *` because RGBA
+  const indexOffset = 4 * pixelOffset;
+  const hasColor = imageDataArray[indexOffset + 0] ||
+    imageDataArray[indexOffset + 1] ||
+    imageDataArray[indexOffset + 2];
+  const isVisible = imageDataArray[indexOffset + 3];
+  // Check for some sort of color other than black
+  if (hasColor && isVisible) {
+    return true;
+  }
+  return false;
+}
+
+const chromeMatches = navigator.userAgent.match(/Chrom(?:e|ium)\/([0-9]+)\./);
+const isChrome = chromeMatches && chromeMatches.length > 0;
+const chromeVersion = chromeMatches && chromeMatches[1] && parseInt(chromeMatches[1], 10);
+
+// We use 16px because mobile Safari (iOS 9.3) doesn't properly scale emojis :/
+// See 32px, https://i.imgur.com/htY6Zym.png
+// See 16px, https://i.imgur.com/FPPsIF8.png
+const fontSize = 16;
+function testUnicodeSupportMap(testMap) {
+  const testMapKeys = Object.keys(testMap);
+  const numTestEntries = testMapKeys
+    .reduce((list, testKey) => list.concat(testMap[testKey]), []).length;
+
+  const canvas = document.createElement('canvas');
+  const ctx = canvas.getContext('2d');
+  canvas.width = (2 * fontSize);
+  canvas.height = (numTestEntries * fontSize);
+  ctx.fillStyle = '#000000';
+  ctx.textBaseline = 'middle';
+  ctx.font = `${fontSize}px "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol"`;
+  // Write each emoji to the canvas vertically
+  let writeIndex = 0;
+  testMapKeys.forEach((testKey) => {
+    const testEntry = testMap[testKey];
+    [].concat(testEntry).forEach((emojiUnicode) => {
+      ctx.fillText(emojiUnicode, 0, (writeIndex * fontSize) + (fontSize / 2));
+      writeIndex += 1;
+    });
+  });
+
+  // Read from the canvas
+  const resultMap = {};
+  let readIndex = 0;
+  testMapKeys.forEach((testKey) => {
+    const testEntry = testMap[testKey];
+    const isTestSatisfied = [].concat(testEntry).every(() => {
+      // Sample along the vertical-middle for a couple of characters
+      const imageData = ctx.getImageData(
+          0,
+          (readIndex * fontSize) + (fontSize / 2),
+          2 * fontSize,
+          1,
+        ).data;
+
+      let isValidEmoji = false;
+      for (let currentPixel = 0; currentPixel < 64; currentPixel += 1) {
+        const isLookingAtFirstChar = currentPixel < fontSize;
+        const isLookingAtSecondChar = currentPixel >= (fontSize + (fontSize / 2));
+        // Check for the emoji somewhere along the row
+        if (isLookingAtFirstChar && checkPixelInImageDataArray(currentPixel, imageData)) {
+          isValidEmoji = true;
+
+        // Check to see that nothing is rendered next to the first character
+        // to ensure that the ZWJ sequence rendered as one piece
+        } else if (isLookingAtSecondChar && checkPixelInImageDataArray(currentPixel, imageData)) {
+          isValidEmoji = false;
+          break;
+        }
+      }
+
+      readIndex += 1;
+      return isValidEmoji;
+    });
+
+    resultMap[testKey] = isTestSatisfied;
+  });
+
+  resultMap.meta = {
+    isChrome,
+    chromeVersion,
+  };
+
+  return resultMap;
+}
+
+let unicodeSupportMap;
+const userAgentFromCache = window.localStorage.getItem('gl-emoji-user-agent');
+try {
+  unicodeSupportMap = JSON.parse(window.localStorage.getItem('gl-emoji-unicode-support-map'));
+} catch (err) {
+  // swallow
+}
+if (!unicodeSupportMap || userAgentFromCache !== navigator.userAgent) {
+  unicodeSupportMap = testUnicodeSupportMap(unicodeSupportTestMap);
+  window.localStorage.setItem('gl-emoji-user-agent', navigator.userAgent);
+  window.localStorage.setItem('gl-emoji-unicode-support-map', JSON.stringify(unicodeSupportMap));
+}
+
+module.exports = unicodeSupportMap;

app/assets/javascripts/copy_as_gfm.js

@@ -46,8 +46,8 @@ require('./lib/utils/common_utils');
       },
     },
     EmojiFilter: {
-      'img.emoji'(el, text) {
-        return el.getAttribute('alt');
+      'gl-emoji'(el, text) {
+        return `:${el.getAttribute('data-name')}:`;
       },
     },
     ImageLinkFilter: {

app/assets/javascripts/extensions/string.js

+require('string.prototype.codepointat');
+require('string.fromcodepoint');

app/assets/javascripts/gfm_auto_complete.js

 /* eslint-disable func-names, space-before-function-paren, no-template-curly-in-string, comma-dangle, object-shorthand, quotes, dot-notation, no-else-return, one-var, no-var, no-underscore-dangle, one-var-declaration-per-line, no-param-reassign, no-useless-escape, prefer-template, consistent-return, wrap-iife, prefer-arrow-callback, camelcase, no-unused-vars, no-useless-return, vars-on-top, max-len */
 
+const emojiMap = require('emoji-map');
+const emojiAliases = require('emoji-aliases');
+const glEmoji = require('./behaviors/gl_emoji');
+
+const glEmojiTag = glEmoji.glEmojiTag;
+
 // Creates the variables for setting up GFM auto-completion
 (function() {
   if (window.gl == null) {
@@ -26,7 +32,12 @@
     },
     // Emoji
     Emoji: {
-      template: '<li>${name} <img alt="${name}" height="20" src="${path}" width="20" /></li>'
+      templateFunction: function(name) {
+        return `<li>
+          ${name} ${glEmojiTag(name)}
+        </li>
+        `;
+      }
     },
     // Team Members
     Members: {
@@ -113,7 +124,7 @@
       $input.atwho({
         at: ':',
         displayTpl: function(value) {
-          return value.path != null ? this.Emoji.template : this.Loading.template;
+          return value && value.name ? this.Emoji.templateFunction(value.name) : this.Loading.template;
         }.bind(this),
         insertTpl: ':${name}:',
         skipSpecialCharacterTest: true,
@@ -355,6 +366,8 @@
       this.isLoadingData[at] = true;
       if (this.cachedData[at]) {
         this.loadData($input, at, this.cachedData[at]);
+      } else if (this.atTypeMap[at] === 'emojis') {
+        this.loadData($input, at, Object.keys(emojiMap).concat(Object.keys(emojiAliases)));
       } else {
         $.getJSON(this.dataSources[this.atTypeMap[at]], (data) => {
           this.loadData($input, at, data);

app/assets/javascripts/main.js

@@ -3,7 +3,6 @@
 /* global Cookies */
 /* global Flash */
 /* global ConfirmDangerModal */
-/* global AwardsHandler */
 /* global Aside */
 
 import jQuery from 'jquery';
@@ -19,6 +18,15 @@ require('mousetrap/plugins/pause/mousetrap-pause');
 require('vendor/fuzzaldrin-plus');
 require('es6-promise').polyfill();
 
+// extensions
+require('./extensions/string');
+require('./extensions/array');
+require('./extensions/custom_event');
+require('./extensions/element');
+require('./extensions/jquery');
+require('./extensions/object');
+require('es6-promise').polyfill();
+
 // expose common libraries as globals (TODO: remove these)
 window.jQuery = jQuery;
 window.$ = jQuery;
@@ -61,13 +69,6 @@ require('./templates/issuable_template_selectors');
 require('./commit/file.js');
 require('./commit/image_file.js');
 
-// extensions
-require('./extensions/array');
-require('./extensions/custom_event');
-require('./extensions/element');
-require('./extensions/jquery');
-require('./extensions/object');
-
 // lib/utils
 require('./lib/utils/animate');
 require('./lib/utils/bootstrap_linked_tabs');
@@ -99,7 +100,7 @@ require('./ajax_loading_spinner');
 require('./api');
 require('./aside');
 require('./autosave');
-require('./awards_handler');
+const AwardsHandler = require('./awards_handler');
 require('./breakpoints');
 require('./broadcast_message');
 require('./build');

app/assets/stylesheets/framework.scss

@@ -44,5 +44,6 @@
 @import "framework/images.scss";
 @import "framework/broadcast-messages";
 @import "framework/emojis.scss";
+@import "framework/emoji-sprites.scss";
 @import "framework/icons.scss";
 @import "framework/snippets.scss";

app/assets/stylesheets/framework/awards.scss

@@ -7,6 +7,7 @@
 
 .emoji-menu {
   position: absolute;
+  top: 0;
   margin-top: 3px;
   padding: $gl-padding;
   z-index: 9;
@@ -20,7 +21,7 @@
   opacity: 0;
   transform: scale(.2);
   transform-origin: 0 -45px;
-  transition: .3s cubic-bezier(.87,-.41,.19,1.44);
+  transition: .3s cubic-bezier(.67,.06,.19,1.44);
   transition-property: transform, opacity;
 
   &.is-aligned-right {
@@ -47,12 +48,13 @@
 }
 
 .emoji-menu-list {
-  list-style: none;
-  padding-left: 0;
   margin-bottom: 0;
+  padding-left: 0;
+  list-style: none;
 }
 
 .emoji-menu-list-item {
+  float: left;
   padding: 3px;
   margin-left: 1px;
   margin-right: 1px;

app/assets/stylesheets/framework/variables.scss

@@ -248,7 +248,7 @@ $diff-view-modes-border: #c1c1c1;
  * Fonts
  */
 $monospace_font: 'Menlo', 'Liberation Mono', 'Consolas', 'DejaVu Sans Mono', 'Ubuntu Mono', 'Courier New', 'andale mono', 'lucida console', monospace;
-$regular_font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen-Sans, Ubuntu, Cantarell, "Helvetica Neue", sans-serif;
+$regular_font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen-Sans, Ubuntu, Cantarell, "Helvetica Neue", sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol";
 
 /*
 * Dropdowns

app/assets/stylesheets/pages/notes.scss

@@ -188,6 +188,9 @@ ul.notes {
     .note-body {
       overflow-x: auto;
       overflow-y: hidden;
+      // Help with emoji cut-off (most noticable in Safari)
+      // See https://i.imgur.com/0dg87Y9.png
+      padding-top: 1px;
 
       .note-text {
         word-wrap: break-word;

app/controllers/emojis_controller.rb

-class EmojisController < ApplicationController
-  layout false
-
-  def index
-  end
-end

app/controllers/projects/autocomplete_sources_controller.rb

 class Projects::AutocompleteSourcesController < Projects::ApplicationController
-  before_action :load_autocomplete_service, except: [:emojis, :members]
-
-  def emojis
-    render json: Gitlab::AwardEmoji.urls
-  end
+  before_action :load_autocomplete_service, except: [:members]
 
   def members
     render json: ::Projects::ParticipantsService.new(@project, current_user).execute(noteable)

app/helpers/emoji_helper.rb

+module EmojiHelper
+  def emoji_icon(*args)
+    raw Gitlab::Emoji.gl_emoji_tag(*args)
+  end
+end

app/helpers/issues_helper.rb

@@ -87,34 +87,6 @@ module IssuesHelper
     icon('eye-slash') if issue.confidential?
   end
 
-  def emoji_icon(name, unicode = nil, aliases = [], sprite: true)
-    unicode ||= Gitlab::Emoji.emoji_filename(name) rescue ""
-
-    data = {
-      aliases: aliases.join(" "),
-      emoji: name,
-      unicode_name: unicode
-    }
-
-    if sprite
-      # Emoji icons for the emoji menu, these use a spritesheet.
-      content_tag :div, "",
-        class: "icon emoji-icon emoji-#{unicode}",
-        title: name,
-        data: data
-    else
-      # Emoji icons displayed separately, used for the awards already given
-      # to an issue or merge request.
-      content_tag :img, "",
-        class: "icon emoji",
-        title: name,
-        height: "20px",
-        width: "20px",
-        src: url_to_image("#{unicode}.png"),
-        data: data
-    end
-  end
-
   def award_user_list(awards, current_user, limit: 10)
     names = awards.map do |award|
       award.user == current_user ? 'You' : award.user.name

app/views/admin/abuse_reports/index.html.haml

@@ -16,4 +16,4 @@
   - else
     .empty-state
       .text-center
-        %h4 There are no abuse reports! #{emoji_icon 'tada'}
+        %h4 There are no abuse reports! #{emoji_icon('tada')}

app/views/award_emoji/_awards_block.html.haml

@@ -4,7 +4,7 @@
     %button.btn.award-control.js-emoji-btn.has-tooltip{ type: "button",
       class: (award_state_class(awards, current_user)),
       data: { placement: "bottom", title: award_user_list(awards, current_user) } }
-      = emoji_icon(emoji, sprite: false)
+      = emoji_icon(emoji)
       %span.award-control-text.js-counter
         = awards.count
 

app/views/emojis/index.html.haml

-.emoji-menu
-  = text_field_tag :emoji_search, "", class: "emoji-search search-input form-control", placeholder: "Search emoji"
-  .emoji-menu-content
-    - Gitlab::AwardEmoji.emoji_by_category.each do |category, emojis|
-      %h5.emoji-menu-title
-        = Gitlab::AwardEmoji::CATEGORIES[category]
-      %ul.clearfix.emoji-menu-list
-        - emojis.each do |emoji|
-          %li.pull-left.text-center.emoji-menu-list-item
-            %button.emoji-menu-btn.text-center.js-emoji-btn{ type: "button" }
-              = emoji_icon(emoji["name"], emoji["unicode"], emoji["aliases"])

app/views/layouts/_init_auto_complete.html.haml

@@ -4,7 +4,6 @@
 - if project
   :javascript
     gl.GfmAutoComplete.dataSources = {
-      emojis: "#{emojis_namespace_project_autocomplete_sources_path(project.namespace, project)}",
       members: "#{members_namespace_project_autocomplete_sources_path(project.namespace, project, type: noteable_type, type_id: params[:id])}",
       issues: "#{issues_namespace_project_autocomplete_sources_path(project.namespace, project)}",
       mergeRequests: "#{merge_requests_namespace_project_autocomplete_sources_path(project.namespace, project)}",

changelogs/unreleased/26371-native-emojis-v2.yml

+---
+title: Use native unicode emojis
+merge_request:
+author:

config/application.rb

@@ -91,7 +91,6 @@ module Gitlab
 
     # Enable the asset pipeline
     config.assets.enabled = true
-    config.assets.paths << Gemojione.images_path
     config.assets.paths << "vendor/assets/fonts"
     config.assets.precompile << "*.png"
     config.assets.precompile << "print.css"

config/routes.rb

@@ -27,9 +27,6 @@ Rails.application.routes.draw do
   get '/autocomplete/users/:id' => 'autocomplete#user'
   get '/autocomplete/projects' => 'autocomplete#projects'
 
-  # Emojis
-  resources :emojis, only: :index
-
   # Search
   get 'search' => 'search#show'
   get 'search/autocomplete' => 'search#autocomplete', as: :search_autocomplete

config/routes/project.rb

@@ -13,7 +13,6 @@ constraints(ProjectUrlConstrainer.new) do
 
       resources :autocomplete_sources, only: [] do
         collection do
-          get 'emojis'
           get 'members'
           get 'issues'
           get 'merge_requests'

config/webpack.config.js

@@ -132,6 +132,7 @@ var config = {
     extensions: ['.js', '.es6', '.js.es6'],
     alias: {
       '~':              path.join(ROOT_PATH, 'app/assets/javascripts'),
+      'emoji-map$':      path.join(ROOT_PATH, 'fixtures/emojis/digests.json'),
       'emoji-aliases$': path.join(ROOT_PATH, 'fixtures/emojis/aliases.json'),
       'icons':          path.join(ROOT_PATH, 'app/views/shared/icons'),
       'vendor':         path.join(ROOT_PATH, 'vendor/assets/javascripts'),

features/steps/project/issues/award_emoji.rb

@@ -90,7 +90,7 @@ class Spinach::Features::AwardEmoji < Spinach::FeatureSteps
 
   step 'I see search result for "hand"' do
     page.within '.emoji-menu-content' do
-      expect(page).to have_selector '[data-emoji="raised_hand"]'
+      expect(page).to have_selector '[data-name="raised_hand"]'
     end
   end
 

lib/banzai/filter/emoji_filter.rb

@@ -17,8 +17,8 @@ module Banzai
 
           next unless content.include?(':') || node.text.match(emoji_unicode_pattern)
 
-          html = emoji_name_image_filter(content)
-          html = emoji_unicode_image_filter(html)
+          html = emoji_unicode_element_unicode_filter(content)
+          html = emoji_name_element_unicode_filter(html)
 
           next if html == content
 
@@ -27,33 +27,30 @@ module Banzai
         doc
       end
 
-      # Replace :emoji: with corresponding images.
+      # Replace :emoji: with corresponding gl-emoji unicode.
       #
       # text - String text to replace :emoji: in.
       #
-      # Returns a String with :emoji: replaced with images.
-      def emoji_name_image_filter(text)
+      # Returns a String with :emoji: replaced with gl-emoji unicode.
+      def emoji_name_element_unicode_filter(text)
         text.gsub(emoji_pattern) do |match|
           name = $1
-          emoji_image_tag(name, emoji_url(name))
+          Gitlab::Emoji.gl_emoji_tag(name)
         end
       end
 
-      # Replace unicode emoji with corresponding images if they exist.
+      # Replace unicode emoji with corresponding gl-emoji unicode.
       #
       # text - String text to replace unicode emoji in.
       #
-      # Returns a String with unicode emoji replaced with images.
-      def emoji_unicode_image_filter(text)
+      # Returns a String with unicode emoji replaced with gl-emoji unicode.
+      def emoji_unicode_element_unicode_filter(text)
         text.gsub(emoji_unicode_pattern) do |moji|
-          emoji_image_tag(Gitlab::Emoji.emojis_by_moji[moji]['name'], emoji_unicode_url(moji))
+          emoji_info = Gitlab::Emoji.emojis_by_moji[moji]
+          Gitlab::Emoji.gl_emoji_tag(emoji_info['name'])
         end
       end
 
-      def emoji_image_tag(emoji_name, emoji_url)
-        "<img class='emoji' title=':#{emoji_name}:' alt=':#{emoji_name}:' src='#{emoji_url}' height='20' width='20' align='absmiddle' />"
-      end
-
       # Build a regexp that matches all valid :emoji: names.
       def self.emoji_pattern
         @emoji_pattern ||= /:(#{Gitlab::Emoji.emojis_names.map { |name| Regexp.escape(name) }.join('|')}):/
@@ -66,52 +63,13 @@ module Banzai
 
       private
 
-      def emoji_url(name)
-        emoji_path = emoji_filename(name)
-
-        if context[:asset_host]
-          # Asset host is specified.
-          url_to_image(emoji_path)
-        elsif context[:asset_root]
-          # Gitlab url is specified
-          File.join(context[:asset_root], url_to_image(emoji_path))
-        else
-          # All other cases
-          url_to_image(emoji_path)
-        end
-      end
-
-      def emoji_unicode_url(moji)
-        emoji_unicode_path = emoji_unicode_filename(moji)
-
-        if context[:asset_host]
-          url_to_image(emoji_unicode_path)
-        elsif context[:asset_root]
-          File.join(context[:asset_root], url_to_image(emoji_unicode_path))
-        else
-          url_to_image(emoji_unicode_path)
-        end
-      end
-
-      def url_to_image(image)
-        ActionController::Base.helpers.url_to_image(image)
-      end
-
       def emoji_pattern
         self.class.emoji_pattern
       end
 
-      def emoji_filename(name)
-        "#{Gitlab::Emoji.emoji_filename(name)}.png"
-      end
-
       def emoji_unicode_pattern
         self.class.emoji_unicode_pattern
       end
-
-      def emoji_unicode_filename(name)
-        "#{Gitlab::Emoji.emoji_unicode_filename(name)}.png"
-      end
     end
   end
 end

lib/gitlab/award_emoji.rb

 module Gitlab
   class AwardEmoji
-    CATEGORIES = {
-      objects: "Objects",
-      travel: "Travel",
-      symbols: "Symbols",
-      nature: "Nature",
-      people: "People",
-      activity: "Activity",
-      flags: "Flags",
-      food: "Food"
-    }.with_indifferent_access
-
     def self.normalize_emoji_name(name)
       aliases[name] || name
     end
 
-    def self.emoji_by_category
-      unless @emoji_by_category
-        @emoji_by_category = Hash.new { |h, key| h[key] = [] }
-
-        emojis.each do |emoji_name, data|
-          data["name"] = emoji_name
-
-          # Skip Fitzpatrick(tone) modifiers
-          next if data["category"] == "modifier"
-
-          category = data["category"]
-
-          @emoji_by_category[category] << data
-        end
-
-        @emoji_by_category = @emoji_by_category.sort.to_h
-      end
-
-      @emoji_by_category
-    end
-
     def self.emojis
-      @emojis ||=
-        begin
-          json_path = File.join(Rails.root, 'fixtures', 'emojis', 'index.json' )
-          JSON.parse(File.read(json_path))
-        end
+      Gitlab::Emoji.emojis
     end
 
     def self.aliases
-      @aliases ||=
-        begin
-          json_path = File.join(Rails.root, 'fixtures', 'emojis', 'aliases.json')
-          JSON.parse(File.read(json_path))
-        end
-    end
-
-    # Returns an Array of Emoji names and their asset URLs.
-    def self.urls
-      @urls ||= begin
-                  path = File.join(Rails.root, 'fixtures', 'emojis', 'digests.json')
-                  # Construct the full asset path ourselves because
-                  # ActionView::Helpers::AssetUrlHelper.asset_url is slow for hundreds
-                  # of entries since it has to do a lot of extra work (e.g. regexps).
-                  prefix = Gitlab::Application.config.assets.prefix
-                  digest = Gitlab::Application.config.assets.digest
-                  base =
-                    if defined?(Gitlab::Application.config.relative_url_root) && Gitlab::Application.config.relative_url_root
-                      Gitlab::Application.config.relative_url_root
-                    else
-                      ''
-                    end
-
-                  JSON.parse(File.read(path)).map do |hash|
-                    fname =
-                      if digest
-                        "#{hash['unicode']}-#{hash['digest']}"
-                      else
-                        hash['unicode']
-                      end
-
-                    { name: hash['name'], path: File.join(base, prefix, "#{fname}.png") }
-                  end
-                end
+      Gitlab::Emoji.emojis_aliases
     end
   end
 end

lib/gitlab/emoji.rb

 module Gitlab
   module Emoji
     extend self
+    @emoji_unicode_version = JSON.parse(File.read(File.absolute_path(File.dirname(__FILE__) + '/../../node_modules/emoji-unicode-version/emoji-unicode-version-map.json')))
+    @emoji_aliases = JSON.parse(File.read(File.join(Rails.root, 'fixtures', 'emojis', 'aliases.json')))
 
     def emojis
       Gemojione.index.instance_variable_get(:@emoji_by_name)
@@ -18,6 +20,10 @@ module Gitlab
       emojis.keys
     end
 
+    def emojis_aliases
+      @emoji_aliases
+    end
+
     def emoji_filename(name)
       emojis[name]["unicode"]
     end
@@ -25,5 +31,22 @@ module Gitlab
     def emoji_unicode_filename(moji)
       emojis_by_moji[moji]["unicode"]
     end
+
+    def emoji_unicode_version(name)
+      @emoji_unicode_version[name]
+    end
+
+    def emoji_image_tag(name, src)
+      "<img class='emoji' title=':#{name}:' alt=':#{name}:' src='#{src}' height='20' width='20' align='absmiddle' />"
+    end
+
+    # CSS sprite fallback takes precedence over image fallback
+    def gl_emoji_tag(name, sprite: false, force_fallback: false)
+      emoji_name = emojis_aliases[name] || name
+      emoji_info = emojis[emoji_name]
+      emoji_fallback_image_source = ActionController::Base.helpers.asset_url("emoji/#{emoji_info['name']}.png")
+      emoji_fallback_sprite_class = "emoji-#{emoji_name}"
+      "<gl-emoji #{force_fallback && sprite ? "class='emoji-icon #{emoji_fallback_sprite_class}'" : ""} data-name='#{emoji_name}' data-fallback-src='#{emoji_fallback_image_source}' #{sprite ? "data-fallback-sprite-class='#{emoji_fallback_sprite_class}'" : ""} data-unicode-version='#{emoji_unicode_version(emoji_name)}'>#{force_fallback && sprite === false ? emoji_image_tag(emoji_name, emoji_fallback_image_source) : emoji_info['moji']}</gl-emoji>"
+    end
   end
 end

lib/gitlab/gon_helper.rb

@@ -7,7 +7,6 @@ module Gitlab
       gon.relative_url_root      = Gitlab.config.gitlab.relative_url_root
       gon.shortcuts_path         = help_page_path('shortcuts')
       gon.user_color_scheme      = Gitlab::ColorSchemes.for_user(current_user).css_class
-      gon.award_menu_url         = emojis_path
       gon.katex_css_url          = ActionController::Base.helpers.asset_path('katex.css')
       gon.katex_js_url           = ActionController::Base.helpers.asset_path('katex.js')
 

lib/tasks/gemojione.rake

@@ -5,29 +5,29 @@ namespace :gemojione do
     require 'json'
 
     dir = Gemojione.images_path
-    digests = []
-    aliases = Hash.new { |hash, key| hash[key] = [] }
-    aliases_path = File.join(Rails.root, 'fixtures', 'emojis', 'aliases.json')
+    resultant_emoji_map = {}
 
-    JSON.parse(File.read(aliases_path)).each do |alias_name, real_name|
-      aliases[real_name] << alias_name
-    end
-
-    Gitlab::AwardEmoji.emojis.map do |name, emoji_hash|
+    Gitlab::Emoji.emojis.map do |name, emoji_hash|
+      # Ignore aliases
+      unless Gitlab::Emoji.emojis_aliases.key?(name)
         fpath = File.join(dir, "#{emoji_hash['unicode']}.png")
-      digest = Digest::SHA256.file(fpath).hexdigest
+        hash_digest = Digest::SHA256.file(fpath).hexdigest
 
-      digests << { name: name, unicode: emoji_hash['unicode'], digest: digest }
+        entry = {
+          category: emoji_hash['category'],
+          moji: emoji_hash['moji'],
+          unicodeVersion: Gitlab::Emoji.emoji_unicode_version(name),
+          digest: hash_digest,
+        }
 
-      aliases[name].each do |alias_name|
-        digests << { name: alias_name, unicode: emoji_hash['unicode'], digest: digest }
+        resultant_emoji_map[name] = entry
       end
     end
 
     out = File.join(Rails.root, 'fixtures', 'emojis', 'digests.json')
 
     File.open(out, 'w') do |handle|
-      handle.write(JSON.pretty_generate(digests))
+      handle.write(JSON.pretty_generate(resultant_emoji_map))
     end
   end
 
@@ -55,21 +55,42 @@ namespace :gemojione do
     SPRITESHEET_WIDTH = 860
     SPRITESHEET_HEIGHT = 840
 
+    # Setup a map to rename image files
+    emoji_uncicode_string_to_name_map = {}
+    Gitlab::Emoji.emojis.map do |name, emoji_hash|
+      # Ignore aliases
+      unless Gitlab::Emoji.emojis_aliases.key?(name)
+        emoji_uncicode_string_to_name_map[emoji_hash['unicode']] = name
+      end
+    end
+
+    # Copy the Gemojione assets to the temporary folder for renaming
+    emoji_dir = "app/assets/images/emoji"
+    FileUtils.rm_rf(emoji_dir)
+    FileUtils.mkdir_p(emoji_dir, mode: 0700)
+    FileUtils.cp_r(File.join(Gemojione.images_path, '.'), emoji_dir)
+    Dir.chdir(emoji_dir) do
+      Dir["**/*.png"].each do |png|
+        image_path = File.join(Dir.pwd, png)
+        rename_to_named_emoji_image!(emoji_uncicode_string_to_name_map, image_path)
+      end
+    end
+
     Dir.mktmpdir do |tmpdir|
-      # Copy the Gemojione assets to the temporary folder for resizing
-      FileUtils.cp_r(Gemojione.images_path, tmpdir)
+      FileUtils.cp_r(File.join(emoji_dir, '.'), tmpdir)
 
       Dir.chdir(tmpdir) do
         Dir["**/*.png"].each do |png|
-          resize!(File.join(tmpdir, png), SIZE)
+          tmp_image_path = File.join(tmpdir, png)
+          resize!(tmp_image_path, SIZE)
         end
       end
 
-      style_path = Rails.root.join(*%w(app assets stylesheets pages emojis.scss))
+      style_path = Rails.root.join(*%w(app assets stylesheets framework emoji-sprites.scss))
 
       # Combine the resized assets into a packed sprite and re-generate the SCSS
       SpriteFactory.cssurl = "image-url('$IMAGE')"
-      SpriteFactory.run!(File.join(tmpdir, 'png'), {
+      SpriteFactory.run!(tmpdir, {
         output_style: style_path,
         output_image: "app/assets/images/emoji.png",
         selector:     '.emoji-',
@@ -83,7 +104,7 @@ namespace :gemojione do
       # let's simplify it
       system(%Q(sed -i '' "s/width: #{SIZE}px; height: #{SIZE}px; background: image-url('emoji.png')/background-position:/" #{style_path}))
       system(%Q(sed -i '' "s/ no-repeat//" #{style_path}))
-      system(%Q(sed -i '' "s/ 0px/ 0/" #{style_path}))
+      system(%Q(sed -i '' "s/ 0px/ 0/g" #{style_path}))
 
       # Append a generic rule that applies to all Emojis
       File.open(style_path, 'a') do |f|
@@ -92,6 +113,8 @@ namespace :gemojione do
         .emoji-icon {
           background-image: image-url('emoji.png');
           background-repeat: no-repeat;
+          color: transparent;
+          text-indent: -99em;
           height: #{SIZE}px;
           width: #{SIZE}px;
 
@@ -112,16 +135,17 @@ namespace :gemojione do
     # Now do it again but for Retina
     Dir.mktmpdir do |tmpdir|
       # Copy the Gemojione assets to the temporary folder for resizing
-      FileUtils.cp_r(Gemojione.images_path, tmpdir)
+      FileUtils.cp_r(File.join(emoji_dir, '.'), tmpdir)
 
       Dir.chdir(tmpdir) do
         Dir["**/*.png"].each do |png|
-          resize!(File.join(tmpdir, png), RETINA)
+          tmp_image_path = File.join(tmpdir, png)
+          resize!(tmp_image_path, RETINA)
         end
       end
 
       # Combine the resized assets into a packed sprite and re-generate the SCSS
-      SpriteFactory.run!(File.join(tmpdir), {
+      SpriteFactory.run!(tmpdir, {
         output_image: "app/assets/images/emoji@2x.png",
         style:        false,
         nocomments:   true,
@@ -155,4 +179,20 @@ namespace :gemojione do
     image.write(image_path) { self.quality = 100 }
     image.destroy!
   end
+
+  EMOJI_IMAGE_PATH_RE = /(.*?)(([0-9a-f]-?)+)\.png$/i
+  def rename_to_named_emoji_image!(emoji_uncicode_string_to_name_map, image_path)
+    # Rename file from unicode to emoji name
+    matches = EMOJI_IMAGE_PATH_RE.match(image_path)
+    preceding_path = matches[1]
+    unicode_string = matches[2]
+    name = emoji_uncicode_string_to_name_map[unicode_string]
+    if name
+      new_png_path = File.join(preceding_path, "#{name}.png")
+      FileUtils.mv(image_path, new_png_path)
+      new_png_path
+    else
+      puts "Warning: emoji_uncicode_string_to_name_map missing entry for #{unicode_string}. Full path: #{image_path}"
+    end
+  end
 end

package.json

@@ -18,7 +18,9 @@
     "bootstrap-sass": "^3.3.6",
     "compression-webpack-plugin": "^0.3.2",
     "d3": "^3.5.11",
+    "document-register-element": "^1.3.0",
     "dropzone": "^4.2.0",
+    "emoji-unicode-version": "^0.2.1",
     "es6-promise": "^4.0.5",
     "jquery": "^2.2.1",
     "jquery-ujs": "^1.2.1",
@@ -29,6 +31,8 @@
     "raw-loader": "^0.5.1",
     "select2": "3.5.2-browserify",
     "stats-webpack-plugin": "^0.4.3",
+    "string.fromcodepoint": "^0.2.1",
+    "string.prototype.codepointat": "^0.2.0",
     "timeago.js": "^2.0.5",
     "underscore": "^1.8.3",
     "vue": "^2.1.10",

spec/features/atom/users_spec.rb

@@ -57,7 +57,7 @@ describe "User Feed", feature: true  do
       end
 
       it 'has XHTML summaries in notes' do
-        expect(body).to match /Bug confirmed <img[^>]*\/>/
+        expect(body).to match /Bug confirmed <gl-emoji[^>]*>/
       end
 
       it 'has XHTML summaries in merge request descriptions' do

spec/features/groups_spec.rb

@@ -105,7 +105,7 @@ feature 'Group', feature: true do
 
       visit path
 
-      expect(page).to have_css('.group-home-desc > p > img')
+      expect(page).to have_css('.group-home-desc > p > gl-emoji')
     end
 
     it 'sanitizes unwanted tags' do

spec/features/issues/award_emoji_spec.rb

@@ -25,14 +25,14 @@ describe 'Awards Emoji', feature: true do
       end
 
       it 'increments the thumbsdown emoji', js: true do
-        find('[data-emoji="thumbsdown"]').click
+        find('[data-name="thumbsdown"]').click
         wait_for_ajax
         expect(thumbsdown_emoji).to have_text("1")
       end
 
       context 'click the thumbsup emoji' do
         it 'increments the thumbsup emoji', js: true do
-          find('[data-emoji="thumbsup"]').click
+          find('[data-name="thumbsup"]').click
           wait_for_ajax
           expect(thumbsup_emoji).to have_text("1")
         end
@@ -44,7 +44,7 @@ describe 'Awards Emoji', feature: true do
 
       context 'click the thumbsdown emoji' do
         it 'increments the thumbsdown emoji', js: true do
-          find('[data-emoji="thumbsdown"]').click
+          find('[data-name="thumbsdown"]').click
           wait_for_ajax
           expect(thumbsdown_emoji).to have_text("1")
         end
@@ -123,9 +123,9 @@ describe 'Awards Emoji', feature: true do
     end
 
     unless status
-      first('[data-emoji="smiley"]').click
+      first('[data-name="smiley"]').click
     else
-      find('[data-emoji="smiley"]').click
+      find('[data-name="smiley"]').click
     end
 
     wait_for_ajax

spec/features/projects_spec.rb

@@ -18,7 +18,7 @@ feature 'Project', feature: true do
     it 'passes through html-pipeline' do
       project.update_attribute(:description, 'This project is the :poop:')
       visit path
-      expect(page).to have_css('.project-home-desc > p > img')
+      expect(page).to have_css('.project-home-desc > p > gl-emoji')
     end
 
     it 'sanitizes unwanted tags' do

spec/helpers/gitlab_markdown_helper_spec.rb

@@ -113,7 +113,7 @@ describe GitlabMarkdownHelper do
     it 'replaces commit message with emoji to link' do
       actual = link_to_gfm(':book:Book', '/foo')
       expect(actual).
-        to eq %Q(<img class="emoji" title=":book:" alt=":book:" src="http://#{Gitlab.config.gitlab.host}/assets/1F4D6.png" height="20" width="20" align="absmiddle"><a href="/foo">Book</a>)
+        to eq '<gl-emoji data-name="book" data-fallback-src="/assets/emoji/book.png" data-unicode-version="6.0">📖</gl-emoji><a href="/foo">Book</a>'
     end
   end
 

spec/lib/banzai/filter/emoji_filter_spec.rb

@@ -14,12 +14,12 @@ describe Banzai::Filter::EmojiFilter, lib: true do
 
   it 'replaces supported name emoji' do
     doc = filter('<p>:heart:</p>')
-    expect(doc.css('img').first.attr('src')).to eq 'https://foo.com/assets/2764.png'
+    expect(doc.css('gl-emoji').first.text).to eq '❤'
   end
 
   it 'replaces supported unicode emoji' do
     doc = filter('<p>❤️</p>')
-    expect(doc.css('img').first.attr('src')).to eq 'https://foo.com/assets/2764.png'
+    expect(doc.css('gl-emoji').first.text).to eq '❤'
   end
 
   it 'ignores unsupported emoji' do
@@ -30,152 +30,97 @@ describe Banzai::Filter::EmojiFilter, lib: true do
 
   it 'correctly encodes the URL' do
     doc = filter('<p>:+1:</p>')
-    expect(doc.css('img').first.attr('src')).to eq 'https://foo.com/assets/1F44D.png'
+    expect(doc.css('gl-emoji').first.text).to eq '👍'
   end
 
   it 'correctly encodes unicode to the URL' do
     doc = filter('<p>👍</p>')
-    expect(doc.css('img').first.attr('src')).to eq 'https://foo.com/assets/1F44D.png'
+    expect(doc.css('gl-emoji').first.text).to eq '👍'
   end
 
   it 'matches at the start of a string' do
     doc = filter(':+1:')
-    expect(doc.css('img').size).to eq 1
+    expect(doc.css('gl-emoji').size).to eq 1
   end
 
   it 'unicode matches at the start of a string' do
     doc = filter("'👍'")
-    expect(doc.css('img').size).to eq 1
+    expect(doc.css('gl-emoji').size).to eq 1
   end
 
   it 'matches at the end of a string' do
     doc = filter('This gets a :-1:')
-    expect(doc.css('img').size).to eq 1
+    expect(doc.css('gl-emoji').size).to eq 1
   end
 
   it 'unicode matches at the end of a string' do
     doc = filter('This gets a 👍')
-    expect(doc.css('img').size).to eq 1
+    expect(doc.css('gl-emoji').size).to eq 1
   end
 
   it 'matches with adjacent text' do
     doc = filter('+1 (:+1:)')
-    expect(doc.css('img').size).to eq 1
+    expect(doc.css('gl-emoji').size).to eq 1
   end
 
   it 'unicode matches with adjacent text' do
     doc = filter('+1 (👍)')
-    expect(doc.css('img').size).to eq 1
+    expect(doc.css('gl-emoji').size).to eq 1
   end
 
   it 'matches multiple emoji in a row' do
     doc = filter(':see_no_evil::hear_no_evil::speak_no_evil:')
-    expect(doc.css('img').size).to eq 3
+    expect(doc.css('gl-emoji').size).to eq 3
   end
 
   it 'unicode matches multiple emoji in a row' do
     doc = filter("'🙈🙉🙊'")
-    expect(doc.css('img').size).to eq 3
+    expect(doc.css('gl-emoji').size).to eq 3
   end
 
   it 'mixed matches multiple emoji in a row' do
     doc = filter("'🙈:see_no_evil:🙉:hear_no_evil:🙊:speak_no_evil:'")
-    expect(doc.css('img').size).to eq 6
+    expect(doc.css('gl-emoji').size).to eq 6
   end
 
-  it 'has a title attribute' do
+  it 'has a data-name attribute' do
     doc = filter(':-1:')
-    expect(doc.css('img').first.attr('title')).to eq ':-1:'
+    expect(doc.css('gl-emoji').first.attr('data-name')).to eq 'thumbsdown'
   end
 
-  it 'unicode has a title attribute' do
-    doc = filter("'👎'")
-    expect(doc.css('img').first.attr('title')).to eq ':thumbsdown:'
-  end
-
-  it 'has an alt attribute' do
+  it 'has a data-fallback-src attribute' do
     doc = filter(':-1:')
-    expect(doc.css('img').first.attr('alt')).to eq ':-1:'
-  end
-
-  it 'unicode has an alt attribute' do
-    doc = filter("'👎'")
-    expect(doc.css('img').first.attr('alt')).to eq ':thumbsdown:'
-  end
-
-  it 'has an align attribute' do
-    doc = filter(':8ball:')
-    expect(doc.css('img').first.attr('align')).to eq 'absmiddle'
-  end
-
-  it 'unicode has an align attribute' do
-    doc = filter("'🎱'")
-    expect(doc.css('img').first.attr('align')).to eq 'absmiddle'
-  end
-
-  it 'has an emoji class' do
-    doc = filter(':cat:')
-    expect(doc.css('img').first.attr('class')).to eq 'emoji'
-  end
-
-  it 'unicode has an emoji class' do
-    doc = filter("'🐱'")
-    expect(doc.css('img').first.attr('class')).to eq 'emoji'
+    expect(doc.css('gl-emoji').first.attr('data-fallback-src')).to end_with '.png'
   end
 
-  it 'has height and width attributes' do
-    doc = filter(':dog:')
-    img = doc.css('img').first
-
-    expect(img.attr('width')).to eq '20'
-    expect(img.attr('height')).to eq '20'
-  end
-
-  it 'unicode has height and width attributes' do
-    doc = filter("'🐶'")
-    img = doc.css('img').first
-
-    expect(img.attr('width')).to eq '20'
-    expect(img.attr('height')).to eq '20'
+  it 'has a data-unicode-version attribute' do
+    doc = filter(':-1:')
+    expect(doc.css('gl-emoji').first.attr('data-unicode-version')).to eq '6.0'
   end
 
   it 'keeps whitespace intact' do
     doc = filter('This deserves a :+1:, big time.')
 
-    expect(doc.to_html).to match(/^This deserves a <img.+>, big time\.\z/)
+    expect(doc.to_html).to match(/^This deserves a <gl-emoji.+>, big time\.\z/)
   end
 
   it 'unicode keeps whitespace intact' do
     doc = filter('This deserves a 🎱, big time.')
 
-    expect(doc.to_html).to match(/^This deserves a <img.+>, big time\.\z/)
-  end
-
-  it 'uses a custom asset_root context' do
-    root = Gitlab.config.gitlab.url + 'gitlab/root'
-
-    doc = filter(':smile:', asset_root: root)
-    expect(doc.css('img').first.attr('src')).to start_with(root)
+    expect(doc.to_html).to match(/^This deserves a <gl-emoji.+>, big time\.\z/)
   end
 
   it 'uses a custom asset_host context' do
     ActionController::Base.asset_host = 'https://cdn.example.com'
 
     doc = filter(':frowning:', asset_host: 'https://this-is-ignored-i-guess?')
-    expect(doc.css('img').first.attr('src')).to start_with('https://cdn.example.com')
-  end
-
-  it 'uses a custom asset_root context' do
-    root = Gitlab.config.gitlab.url + 'gitlab/root'
-
-    doc = filter("'🎱'", asset_root: root)
-    expect(doc.css('img').first.attr('src')).to start_with(root)
+    expect(doc.css('gl-emoji').first.attr('data-fallback-src')).to start_with('https://cdn.example.com')
   end
 
   it 'uses a custom asset_host context' do
     ActionController::Base.asset_host = 'https://cdn.example.com'
 
     doc = filter("'🎱'", asset_host: 'https://this-is-ignored-i-guess?')
-    expect(doc.css('img').first.attr('src')).to start_with('https://cdn.example.com')
+    expect(doc.css('gl-emoji').first.attr('data-fallback-src')).to start_with('https://cdn.example.com')
   end
 end

spec/lib/gitlab/award_emoji_spec.rb

 require 'spec_helper'
 
 describe Gitlab::AwardEmoji do
-  describe '.urls' do
-    after do
-      Gitlab::AwardEmoji.instance_variable_set(:@urls, nil)
-    end
-
-    subject { Gitlab::AwardEmoji.urls }
-
-    it { is_expected.to be_an_instance_of(Array) }
-    it { is_expected.not_to be_empty }
-
-    context 'every Hash in the Array' do
-      it 'has the correct keys and values' do
-        subject.each do |hash|
-          expect(hash[:name]).to be_an_instance_of(String)
-          expect(hash[:path]).to be_an_instance_of(String)
-        end
-      end
-    end
-
-    context 'handles relative root' do
-      it 'includes the full path' do
-        allow(Gitlab::Application.config).to receive(:relative_url_root).and_return('/gitlab')
-
-        subject.each do |hash|
-          expect(hash[:name]).to be_an_instance_of(String)
-          expect(hash[:path]).to start_with('/gitlab')
-        end
-      end
-    end
-  end
-
-  describe '.emoji_by_category' do
-    it "only contains known categories" do
-      undefined_categories = Gitlab::AwardEmoji.emoji_by_category.keys - Gitlab::AwardEmoji::CATEGORIES.keys
-      expect(undefined_categories).to be_empty
-    end
-  end
 end

spec/routing/project_routing_spec.rb

@@ -120,7 +120,6 @@ describe 'project routing' do
     end
   end
 
-  # emojis_namespace_project_autocomplete_sources_path         GET /:project_id/autocomplete_sources/emojis(.:format)         projects/autocomplete_sources#emojis
   # members_namespace_project_autocomplete_sources_path        GET /:project_id/autocomplete_sources/members(.:format)        projects/autocomplete_sources#members
   # issues_namespace_project_autocomplete_sources_path         GET /:project_id/autocomplete_sources/issues(.:format)         projects/autocomplete_sources#issues
   # merge_requests_namespace_project_autocomplete_sources_path GET /:project_id/autocomplete_sources/merge_requests(.:format) projects/autocomplete_sources#merge_requests
@@ -128,7 +127,7 @@ describe 'project routing' do
   # milestones_namespace_project_autocomplete_sources_path     GET /:project_id/autocomplete_sources/milestones(.:format)     projects/autocomplete_sources#milestones
   # commands_namespace_project_autocomplete_sources_path       GET /:project_id/autocomplete_sources/commands(.:format)       projects/autocomplete_sources#commands
   describe Projects::AutocompleteSourcesController, 'routing' do
-    [:emojis, :members, :issues, :merge_requests, :labels, :milestones, :commands].each do |action|
+    [:members, :issues, :merge_requests, :labels, :milestones, :commands].each do |action|
       it "to ##{action}" do
         expect(get("/gitlab/gitlabhq/autocomplete_sources/#{action}")).to route_to("projects/autocomplete_sources##{action}", namespace_id: 'gitlab', project_id: 'gitlabhq')
       end

spec/support/matchers/markdown_matchers.rb

@@ -26,10 +26,10 @@ module MarkdownMatchers
     set_default_markdown_messages
 
     match do |actual|
-      expect(actual).to have_selector('img.emoji', count: 10)
+      expect(actual).to have_selector('gl-emoji', count: 10)
 
-      image = actual.at_css('img.emoji')
-      expect(image['src'].to_s).to start_with(Gitlab.config.gitlab.url + '/assets')
+      emoji_element = actual.at_css('gl-emoji')
+      expect(emoji_element['data-fallback-src'].to_s).to start_with('/assets')
     end
   end
 

yarn.lock

@@ -1395,6 +1395,10 @@ doctrine@1.5.0, doctrine@^1.2.2:
     esutils "^2.0.2"
     isarray "^1.0.0"
 
+document-register-element@^1.3.0:
+  version "1.3.0"
+  resolved "https://registry.yarnpkg.com/document-register-element/-/document-register-element-1.3.0.tgz#fb3babb523c74662be47be19c6bc33e71990d940"
+
 dom-serialize@^2.2.0:
   version "2.2.1"
   resolved "https://registry.yarnpkg.com/dom-serialize/-/dom-serialize-2.2.1.tgz#562ae8999f44be5ea3076f5419dcd59eb43ac95b"
@@ -1439,6 +1443,10 @@ elliptic@^6.0.0:
     hash.js "^1.0.0"
     inherits "^2.0.1"
 
+emoji-unicode-version@^0.2.1:
+  version "0.2.1"
+  resolved "https://registry.yarnpkg.com/emoji-unicode-version/-/emoji-unicode-version-0.2.1.tgz#0ebf3666b5414097971d34994e299fce75cdbafc"
+
 emojis-list@^2.0.0:
   version "2.1.0"
   resolved "https://registry.yarnpkg.com/emojis-list/-/emojis-list-2.1.0.tgz#4daa4d9db00f9819880c79fa457ae5b09a1fd389"
@@ -4115,6 +4123,14 @@ string-width@^2.0.0:
     is-fullwidth-code-point "^2.0.0"
     strip-ansi "^3.0.0"
 
+string.fromcodepoint@^0.2.1:
+  version "0.2.1"
+  resolved "https://registry.yarnpkg.com/string.fromcodepoint/-/string.fromcodepoint-0.2.1.tgz#8d978333c0bc92538f50f383e4888f3e5619d653"
+
+string.prototype.codepointat@^0.2.0:
+  version "0.2.0"
+  resolved "https://registry.yarnpkg.com/string.prototype.codepointat/-/string.prototype.codepointat-0.2.0.tgz#6b26e9bd3afcaa7be3b4269b526de1b82000ac78"
+
 string_decoder@^0.10.25, string_decoder@~0.10.x:
   version "0.10.31"
   resolved "https://registry.yarnpkg.com/string_decoder/-/string_decoder-0.10.31.tgz#62e203bc41766c6c28c9fc84301dab1c5310fa94"