Issue #8133 has been updated by nagachika (Tomoyuki Chikanaga). mame (Yusuke Endoh) wrote: > Just for information: r39858 introduces the behavior change. > Whether %r{n{3\}}} matches with: > > | "nnn}" | "n{3}}" > ----------+--------+--------- > 1.9.3p392 | YES | NO > 2.0.0p0 | NO | YES > trunk | YES | NO > On my environment the result was exactly opposite. $ cat regexp_test.rb re = %r{n{3\}}} p re p [re =~ "nnn}", re =~ "n{3}}"] ruby 1.9.3dev (2011-09-24 revision 33322) [x86_64-darwin10.8.0] /n{3\}}/ [nil, 0] ruby 2.0.0p96 (2013-03-25 revision 39918) [x86_64-darwin10.8.0] /n{3}}/ [0, nil] ruby 2.1.0dev (2013-03-24 trunk 39908) [x86_64-darwin10.8.0] /n{3\}}/ [nil, 0] ---------------------------------------- Bug #8133: Regexp macro %r{} is loosing backslash on "\}" https://bugs.ruby-lang.org/issues/8133#change-37900 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. -- http://bugs.ruby-lang.org/