From: Rob Biedenharn <Rob@...>
Date: 2008-04-10T03:46:53+09:00
Subject: Re: capitalizing words


On Apr 9, 2008, at 2:13 PM, Jens Wille wrote:
> hi peter!
>
> Peter Bailey [2008-04-09 20:04]:
>> Dir.chdir("C:/users/pb4072/documents") do |d| file =
>> File.read("test1.txt") output =
>> file.gsub(%r{^(<row><entry><text><emph
>> face="b">)(.*)(<\/emph>)}m) do |match|
>> "#{$1}#{$2.gsub(%r{\b\w+\b}){|w|w.capitalize}}#{$3}" end
>> File.open("test1.txt", "w") { |f| f.write output } end
>>
>> Here's what I get. It works great, but, I don't understand why
>> the $3 text is simply blown away.
> because it's reset when you're doing that gsub on $2. the capture
> variables only refer to the *last* match. so you have to capture
> them into local variables first (can't think of a better way right  
> now).
>
> cheers
> jens
>
> -- 
> Jens Wille, Dipl.-Bibl. (FH)
> prometheus - Das verteilte digitale Bildarchiv für Forschung & Lehre
> Kunsthistorisches Institut der Universität zu Köln
> Albertus-Magnus-Platz, D-50923 Köln
> Tel.: +49 (0)221 470-6668, E-Mail: jens.wille@uni-koeln.de
> http://www.prometheus-bildarchiv.de/


Ah yes!  Good catch, Jens.

Peter, you only *need* to capture $3, but it would make sense to get  
them all:

head, content, tail = $1, $2, $3
"#{head}#{content.gsub(%r{\b\w+\b}){|w|w.capitalize}}#{tail}"

-Rob

Rob Biedenharn		http://agileconsultingllc.com
Rob@AgileConsultingLLC.com