From 53938f7998e8c1f0e65de4e06e112ce2d8bada42 Mon Sep 17 00:00:00 2001
From: Luke Barnard <lukeb@openmarket.com>
Date: Tue, 31 Oct 2017 10:25:06 +0000
Subject: [PATCH] Change client-side validation of group IDs to match synapse

---
 src/components/views/dialogs/CreateGroupDialog.js | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/components/views/dialogs/CreateGroupDialog.js b/src/components/views/dialogs/CreateGroupDialog.js
index bda298ef0b..f38d92b482 100644
--- a/src/components/views/dialogs/CreateGroupDialog.js
+++ b/src/components/views/dialogs/CreateGroupDialog.js
@@ -55,8 +55,8 @@ export default React.createClass({
 
     _checkGroupId: function(e) {
         let error = null;
-        if (!/^[a-zA-Z0-9]*$/.test(this.state.groupId)) {
-            error = _t("Community IDs may only contain alphanumeric characters");
+        if (!/^[a-z0-9=_-\.\/]*$/.test(this.state.groupId)) {
+            error = _t("Community IDs may only contain characters a-z, 0-9, or '=_-./'");
         }
         this.setState({
             groupIdError: error,