Merge pull request #1177 from matrix-org/luke/fix-rte-prefix-matching

Only match users by matchgin displayname or user ID prefixes

src/autocomplete/UserProvider.js

@@ -37,10 +37,11 @@ export default class UserProvider extends AutocompleteProvider {
 
     constructor() {
         super(USER_REGEX, {
-            keys: ['name', 'userId'],
+            keys: ['name'],
         });
         this.matcher = new FuzzyMatcher([], {
-            keys: ['name', 'userId'],
+            keys: ['name'],
+            shouldMatchPrefix: true,
         });
     }