From 2b0716397cb06c95f5861b616a59a68420a742ca Mon Sep 17 00:00:00 2001
From: setop <setop@zoocoop.com>
Date: Sun, 12 Apr 2020 17:42:30 +0200
Subject: [PATCH] fix pattern validation in event deletion

---
 js/src/mixins/event.ts | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/js/src/mixins/event.ts b/js/src/mixins/event.ts
index 2092b5d45..d3dc4c38d 100644
--- a/js/src/mixins/event.ts
+++ b/js/src/mixins/event.ts
@@ -77,6 +77,9 @@ export default class EventMixin extends mixins(Vue) {
   }
 
   protected async openDeleteEventModal(event: IEvent, currentActor: IPerson) {
+    function escapeRegExp(string) {
+      return string.replace(/[.*+?^${}()|[\]\\]/g, '\\$&'); // $& means the whole matched string
+    }  	  
     const participantsLength = event.participantStats.participant;
     const prefix = participantsLength
             ? this.$tc('There are {participants} participants.', event.participantStats.participant, {
@@ -97,7 +100,7 @@ export default class EventMixin extends mixins(Vue) {
             ) as string,
       inputAttrs: {
         placeholder: event.title,
-        pattern: event.title,
+        pattern: escapeRegExp(event.title),
       },
       onConfirm: () => this.deleteEvent(event, currentActor),
     });