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ruby-changes:71273

From: Nobuyoshi <ko1@a...>
Date: Fri, 25 Feb 2022 19:52:45 +0900 (JST)
Subject: [ruby-changes:71273] c8cddac45c (master): [ruby/date] Use possessive match

https://git.ruby-lang.org/ruby.git/commit/?id=c8cddac45c

From c8cddac45c3786afc737ac9c1075d77d8f752d3d Mon Sep 17 00:00:00 2001
From: Nobuyoshi Nakada <nobu@r...>
Date: Fri, 9 Jul 2021 06:35:58 +0900
Subject: [ruby/date] Use possessive match

Reduce backtracks at the same character classes arounding an
optional pattern.

https://github.com/ruby/date/commit/1fd15f7c49
---
 ext/date/date_parse.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/ext/date/date_parse.c b/ext/date/date_parse.c
index 91e294e4aa..0e7067f4d8 100644
--- a/ext/date/date_parse.c
+++ b/ext/date/date_parse.c
@@ -922,8 +922,8 @@ parse_us(VALUE str, VALUE hash) https://github.com/ruby/ruby/blob/trunk/ext/date/date_parse.c#L922
 		COM_FPT
 #endif
 		 "(?:"
-		   "\\s*,?"
-		   "\\s*"
+		   "\\s*+,?"
+		   "\\s*+"
 #ifndef TIGHT_PARSER
 		   "(c(?:e|\\.e\\.)|b(?:ce|\\.c\\.e\\.)|a(?:d|\\.d\\.)|b(?:c|\\.c\\.))?"
 		   "\\s*"
-- 
cgit v1.2.1


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