From: Robert Klemme <bob.news@...>
Date: 2003-11-25T01:32:10+09:00
Subject: Re: using variables in regular expressions


"Damphyr" <damphyr@freemail.gr> schrieb im Newsbeitrag
news:3FC2104E.7080607@freemail.gr...
> Being lazy, forgetful and generally very bad with regular expressions
> leads me to post this question:
>
> How can I use the contents of a variable as a pattern in a regular
> expression?
>
> I get a list of files from a set of paths and I want to do the following
>
> repo=list_files paths
> repo.collect!{|entry|
> entry.gsub(/{variable_with_the root_I_want_to_substitute}/,"")
> }

using gsub! is more efficient and better use %r{} because Regexp.quote
does not quote "/":

repo=list_files paths
repo.each {|entry|
  entry.gsub!(%r{#{Regexp.quote(variable_with_the
root_I_want_to_substitute)}},"")
}

Regards

    robert