FEATURE: adds emoji search aliases

app/assets/javascripts/pretty-text/emoji.js.es6.erb

@@ -1,4 +1,4 @@
-import { emojis, aliases, translations, tonableEmojis } from 'pretty-text/emoji/data';
+import { emojis, aliases, searchAliases, translations, tonableEmojis } from 'pretty-text/emoji/data';
 
 // bump up this number to expire all emojis
 export const IMAGE_VERSION = "<%= Emoji::EMOJI_VERSION %>";
@@ -94,24 +94,28 @@ export function emojiSearch(term, options) {
     if (results.indexOf(val) === -1) {
       results.push(val);
     }
-    return maxResults > 0 && results.length >= maxResults;
+  }
+
+  // if term matches from beginning
+  for (let i=0; i<toSearch.length; i++) {
+    const item = toSearch[i];
+    if (item.indexOf(term) === 0) addResult(item);
+  }
+
+  if (searchAliases[term]) {
+    results.push.apply(results, searchAliases[term]);
   }
 
   for (let i=0; i<toSearch.length; i++) {
     const item = toSearch[i];
-    if (item.indexOf(term) === 0 && addResult(item)) {
-      return results;
-    }
+    if (item.indexOf(term) > 0) addResult(item);
   }
 
-  for (let i=0; i<toSearch.length; i++) {
-    const item = toSearch[i];
-    if (item.indexOf(term) > 0 && addResult(item)) {
-      return results;
-    }
+  if (maxResults === -1) {
+    return results;
+  } else {
+    return results.slice(0, maxResults);
   }
-
-  return results;
 };
 
 export function isSkinTonableEmoji(term) {

app/assets/javascripts/pretty-text/emoji/data.js.es6.erb

@@ -1,6 +1,7 @@
 export const emojis = <%= Emoji.standard.map(&:name).flatten.inspect %>;
 export const tonableEmojis = <%= Emoji.tonable_emojis.flatten.inspect %>;
 export const aliases = <%= Emoji.aliases.inspect.gsub("=>", ":") %>;
+export const searchAliases = <%= Emoji.searchAliases.inspect.gsub("=>", ":") %>;
 export const translations = {
   ':)'   : 'slight_smile',
   ':-)'  : 'slight_smile',

app/models/emoji.rb

@@ -25,6 +25,10 @@ class Emoji
     Discourse.cache.fetch(cache_key("aliases_emojis")) { db['aliases'] }
   end
 
+  def self.searchAliases
+    Discourse.cache.fetch(cache_key("search_aliases_emojis")) { db['searchAliases'] }
+  end
+
   def self.custom
     Discourse.cache.fetch(cache_key("custom_emojis")) { load_custom }
   end
@@ -59,7 +63,7 @@ class Emoji
   end
 
   def self.clear_cache
-    %w{custom standard aliases all tonable}.each do |key|
+    %w{custom standard aliases search_aliases all tonable}.each do |key|
       Discourse.cache.delete(cache_key("#{key}_emojis"))
     end
   end

lib/emoji/db.json

@@ -6795,5 +6795,17 @@
     "face_vomiting": [
       "puke"
     ]
+  },
+  "searchAliases": {
+    "sad": [
+      "frowning_face",
+      "slightly_frowning_face",
+      "sob",
+      "crying_cat_face",
+      "cry"
+    ],
+    "cry": [
+      "sob"
+    ]
   }
 }

lib/tasks/emoji.rake

@@ -12,6 +12,17 @@ EMOJI_IMAGES_PATH ||= "public/images/emoji"
 
 EMOJI_ORDERING_URL ||= "http://www.unicode.org/emoji/charts/emoji-ordering.html"
 
+# Format is search pattern => associated emojis
+# eg: "cry" => [ "sob" ]
+# for a "cry" query should return: cry and sob
+SEARCH_ALIASES ||= {
+  "sad" => [ "frowning_face", "slightly_frowning_face", "sob", "crying_cat_face", "cry" ],
+  "cry" => [ "sob" ]
+}
+
+# emoji aliases are actually created as images
+# eg: "right_anger_bubble" => [ "anger_right" ]
+# your app will physically have right_anger_bubble.png and anger_right.png
 EMOJI_ALIASES ||= {
   "right_anger_bubble" => [ "anger_right" ],
   "ballot_box" => [ "ballot_box_with_ballot" ],
@@ -508,7 +519,8 @@ def write_db_json(emojis)
   db = {
     "emojis" => emojis_without_tones,
     "tonableEmojis" => emoji_with_tones,
-    "aliases" => EMOJI_ALIASES
+    "aliases" => EMOJI_ALIASES,
+    "searchAliases" => SEARCH_ALIASES
   }
 
   File.write(EMOJI_DB_PATH, JSON.pretty_generate(db))