From: Rob Biedenharn <Rob@...>
Date: 2009-07-18T01:15:24+09:00
Subject: Re: regexp exclusion search - find matches NOT ending with a string?


On Jul 17, 2009, at 11:30 AM, Glenn Jackman wrote:

> At 2009-07-16 08:59PM, "David A. Black" wrote:
>> On Fri, 17 Jul 2009, BrendanC wrote:
>>> $(?<!\.html)   # <---- this seems to work with other engines
>>
>> I would probably do:
>>
>>    lines.reject {|line| line =~ /html$/ }
>
> Is the Ruby regular expression syntax documented anywhere?
>
> I was attempting to use a look-behind, but it's not supported.
>
> The syntax is not documented in the RegExp rdocs, and I haven't seen a
> site that spells out all the nitty-gritty details and pokes into the
> dark corners.
>
> I'm looking for the Ruby equivalent of:
>    http://www.tcl.tk/man/tcl8.5/TclCmd/re_syntax.htm
>    http://docs.python.org/library/re.html#regular-expression-syntax
>    http://perldoc.perl.org/perlre.html
>
> Does it exist?
>
>
> --  
> Glenn Jackman
>    Write a wise saying and your name will live forever. -- Anonymous
>


You could try the Regular Expressions section of the Standard Types  
chapter of Programming Ruby. Be advised that this is the online  
version of the 1st edition that is now 8 years old.  Since you seem to  
be using a version 1.8.x of Ruby, the Regexp parts are going to be  
mostly the same.

http://www.ruby-doc.org/docs/ProgrammingRuby/

-Rob

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