From: mike@... (Mike Stok)
Date: 2003-06-27T23:27:26+09:00
Subject: Re: \s in regex

In article <eec52c7a.0306270536.6178a985@posting.google.com>,
s moon <internetletter@yahoo.com> wrote:
>what I want is to remove beginning and trailing spaces from lines.
>
>this is a failed try.
>
>ifile.each { | line |
>  ofile.print line.sub(/^\s+/,"").sub(/\s+$/,"")
>}
>
>this removes spaces from begin and end of lines
>but it also removes blank lines.
>it seems \s matches \r or \n also.

One approach might be to use String#strip as suggested by another
poster, and to use IO#puts to supply the line ending e.g.

  ifile.each { |line|
    ofile.puts line.strip
  }

This is "quick and dirty" and will add a \n to the last line from the
input even if there wasn't a final \n in the inpyt stream.

Hope this helps,

Mike

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