From: "naruse (Yui NARUSE)" <naruse@...>
Date: 2013-03-22T16:26:26+09:00
Subject: [ruby-core:53623] [ruby-trunk - Bug #8133] Regexp macro %r{} is loosing backslash on "\}"


Issue #8133 has been updated by naruse (Yui NARUSE).


nagachika (Tomoyuki Chikanaga) wrote:
> Hmm, is it a bug introduced in 2.0.0?
> I personally feel the behavior of 2.0.0 is natural.

\} in this case doesn't escape a regexp meta character, it escapes closing terminator of %r{...} literal.
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Bug #8133: Regexp macro %r{} is loosing backslash on "\}"
https://bugs.ruby-lang.org/issues/8133#change-37804

Author: jstribny (Josef Stribny)
Status: Closed
Priority: Normal
Assignee: 
Category: core
Target version: current: 2.1.0
ruby -v: 2.0.0


Hello,

Ruby 2.0.0 is loosing the backslash when used on "\}" string (exact match). 

How to reproduce in irb:

2.0.0-p0 :003 > %r{\}}
 => /}/ 
2.0.0-p0 :004 > %r{\{}
 => /\{/ 

Compared to:

1.9.3p392 :001 > %r{\{}
 => /\{/ 
1.9.3p392 :002 > %r{\}}
 => /\}/

This shouldn't probably happen.


-- 
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