From bf75cd1bef830fa026b2b8b6fc3108d6696df1b3 Mon Sep 17 00:00:00 2001
From: Henrik Levkowetz <henrik@levkowetz.com>
Date: Tue, 29 Oct 2013 22:20:51 +0000
Subject: [PATCH] Added a template filter to do required escaping in iCalendar
 pages.  - Legacy-Id: 6533

---
 ietf/doc/templatetags/ietf_filters.py | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/ietf/doc/templatetags/ietf_filters.py b/ietf/doc/templatetags/ietf_filters.py
index 21f9e4b80..1b9b8b493 100644
--- a/ietf/doc/templatetags/ietf_filters.py
+++ b/ietf/doc/templatetags/ietf_filters.py
@@ -490,4 +490,8 @@ def plural(text, list, arg=u's'):
         return text
     else:
         return text + pluralize(len(list), arg)
-        
\ No newline at end of file
+
+@register.filter
+def ics_esc(text):
+    text = re.sub(r"([\n,;\\])", r"\\\1", text)
+    return text