From: Andreas Grau <redmine@...>
Date: 2009-03-19T00:43:04+09:00
Subject: [ruby-core:22929] [Bug #1301] Poor RegExp Matching Performance

Issue #1301 has been updated by Andreas Grau.


Using this regexp
regexp = /^(\d*\s+){8,8}+\d+$/

This matches on any line starting with up to 8 number separated by by blanks and a final number

if the string is now in the wrong format, e.g. 
str="                                  #"

the matching takes a very long time
regexp.match(str)



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http://redmine.ruby-lang.org/issues/show/1301

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