From: Brian Candler <b.candler@...>
Date: 2009-09-02T23:50:52+09:00
Subject: Re: regex issue confusing

You may find \b useful: it means "match a word boundary" without 
actually consuming any characters. Your example starts with \s (match 
one space), so it wouldn't match #include right at the beginning of the 
file.

But if I remember my C right, the #include has to be at the start of a 
line anyway. So perhaps you want:

>> line = "#include <stdio.h>"
=> "#include <stdio.h>"
>> line[/^\s*#include\s*["<]([^">]+)/, 1]
=> "stdio.h"

HTH,

Brian.
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