From b21ce6ee5e9aa0073922e7d00e5f5834863dc107 Mon Sep 17 00:00:00 2001
From: Arthur Schiwon <blizzz@arthur-schiwon.de>
Date: Mon, 17 Oct 2016 18:19:51 +0200
Subject: [PATCH] improve regex, fixes replacements of usernames with same
 trunk

Signed-off-by: Arthur Schiwon <blizzz@arthur-schiwon.de>
---
 apps/comments/js/commentstabview.js | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/apps/comments/js/commentstabview.js b/apps/comments/js/commentstabview.js
index 23f2bc489e..9c0e6a6b68 100644
--- a/apps/comments/js/commentstabview.js
+++ b/apps/comments/js/commentstabview.js
@@ -256,9 +256,20 @@
 
 			for(var i in mentions) {
 				var mention = '@' + mentions[i].mentionId;
+
+
+				// escape possible regex characters in the name
 				mention = mention.replace(/[.*+?^${}()|[\]\\]/g, '\\$&');
 				var displayName = '<b>'+ _.escape(mentions[i].mentionDisplayName)+'</b>';
-				message = message.replace(new RegExp(mention, 'g'), displayName);
+
+				// replace every mention either at the start of the input or after a whitespace
+				// followed by a non-word character.
+				message = message.replace(new RegExp("(^|\\s)(" + mention + ")(\\b|?![_-@.])", 'g'),
+					function(match, p1) {
+						// to  get number of whitespaces (0 vs 1) right
+						return p1+displayName;
+					}
+				);
 			}
 
 			return message;