From: Todd Holloway <todd@...>
Date: 2002-06-20T03:54:38+09:00
Subject: Re: in-place editing part two

what if one needed to make several changes through out the file?

 ARGV.replace(['Makefile'])
 ARGF.each_line do |line|
   print line.sub(/blah1/, "blah2")
   print line.sub(/blah3/, "blah4")
 end

this seems to give me the correct substitutions...but twice as
many lines :)

todd


On Wed, Jun 19, 2002 at 08:22:09AM +0900, nobu.nokada@softhome.net wrote:
> Hi,
> 
> At Wed, 19 Jun 2002 07:31:53 +0900,
> Ian Macdonald wrote:
> > I'm trying to figure out why the following code chunk fails to edit my
> > file in-place:
> > 
> > $-i = '.foo'                   # set in-place edit mode
> > mf = File.open('Makefile', 'r+')
> > mf.each_line do |line|
> >   line.sub!(/-l\$\(RUBY_INSTALL_NAME\) /, "")
> > end
> > mf.close
> 
> Inplace edit works for ARGF.
> 
> ARGV.replace(['Makefile'])
> ARGF.each_line do |line|
>   print line.sub(/-l\$\(RUBY_INSTALL_NAME\) /, "")
> end
> 
> -- 
> Nobu Nakada

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