From: "nobu (Nobuyoshi Nakada)" <nobu@...>
Date: 2013-08-28T20:41:13+09:00
Subject: [ruby-core:56846] [ruby-trunk - Bug #8828][Rejected] regex matching	not correct


Issue #8828 has been updated by nobu (Nobuyoshi Nakada).

Status changed from Open to Rejected

Your bug.
Lookbehind matches the preceding part, which matches \s* in your regexp.


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Bug #8828: regex matching not correct
https://bugs.ruby-lang.org/issues/8828#change-41388

Author: jjyr (jy j)
Status: Rejected
Priority: Normal
Assignee: 
Category: 
Target version: 
ruby -v: 2.0.0-p247
Backport: 1.9.3: UNKNOWN, 2.0.0: UNKNOWN


str = "  [1]: http://google.com/        &quot;Google&quot;"

str =~  /\A\s*\[(.+)\]\:\ (\S+)\s*((?<=&quot;).+(?=&quot;))/
#=> nil

#then i replace this part '(?<=&quot;).+(?=&quot;)' with '.+'

str =~  /\A\s*\[(.+)\]\:\ (\S+)\s*(.+)/
#=> 0

$3
#=> "&quot;Google&quot;"

$3 =~ /((?<=&quot;).+(?=&quot;))/
#=> 6

$1
# => "Google"

it can matching now! but i just replace a part of regex with .+, then retry the part, it should not matching? (or it should work at beginning)


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