Update src/mixins/richEditor/index.js

Co-authored-by: Maksim Sukharev <antreesy.web@gmail.com>
Signed-off-by: Ferdinand Thiessen <opensource@fthiessen.de>

src/mixins/richEditor/index.js

@@ -11,8 +11,7 @@ import stripTags from 'striptags'
 import Vue from 'vue'
 
 // Referenced from public function getMentions(): https://github.com/nextcloud/server/blob/master/lib/private/Comments/Comment.php
-// Modified to work on MobileSafari <16.4 (see issue #5589: https://github.com/nextcloud-libraries/nextcloud-vue/issues/5589)
-// Beginning or whitespace.
+// Beginning or whitespace. Uses positive lookahead (to work on MobileSafari <16.4)
 const MENTION_START = /(?=[a-z0-9_\-@.'])\B/.source
 // Capturing groups like: @user-id, @"guest/abc16def", @"federated_user/user-id", @"user-id with space"
 const MENTION_SIMPLE = /(@[a-z0-9_\-@.']+)/.source