From d5a7c319ac2c9068f847c7d05fd392b9cc42824a Mon Sep 17 00:00:00 2001
From: Alex Dilley <alex.dilley@gmail.com>
Date: Mon, 20 Jun 2016 16:30:28 +0100
Subject: [PATCH] iCal spec defines UNTIL as either a date or date-time.

Support for rules with UNTIL part set as a date, avoiding coercion into
a Time in the system time zone.

https://tools.ietf.org/html/rfc5545#section-3.3.10
---
 lib/ice_cube/parsers/ical_parser.rb | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/lib/ice_cube/parsers/ical_parser.rb b/lib/ice_cube/parsers/ical_parser.rb
index 2e1e2f05..7387a9ca 100644
--- a/lib/ice_cube/parsers/ical_parser.rb
+++ b/lib/ice_cube/parsers/ical_parser.rb
@@ -37,7 +37,11 @@ def self.rule_from_ical(ical)
         when 'COUNT'
           params[:count] = value.to_i
         when 'UNTIL'
-          params[:until] = Time.parse(value).utc
+          params[:until] = if value =~ /^\d{8}$/
+                             Date.parse(value).to_datetime.to_time
+                           else
+                             Time.parse(value)
+                           end.utc
         when 'WKST'
           params[:wkst] = TimeUtil.ical_day_to_symbol(value)
         when 'BYSECOND'