From: "David A. Black" <dblack@...>
Date: 2004-09-23T21:32:22+09:00
Subject: Re: whitespace string only

Hi --

On Thu, 23 Sep 2004, ts wrote:

> >>>>> "D" == David A Black <dblack@wobblini.net> writes:
> 
> >> |     self !~ /[^\s]/
> 
> svg% ruby -rjj -e '/[^\s]/.dump'
> Regexp /[^\s]/
>   0     charset_not \011-\015   (0) 
>   1     end
> svg% 
> 
> D>   self !~ /\S/
> 
> svg% ruby -rjj -e '/\S/.dump'
> Regexp /\S/
>   0     charset_not \011-\012\014-\015   (0) 
>   1     end

Ugh.  So \013 (vertical tab) is defined as whitespace:

  irb(main):008:0> /[\s]/.match("\013")
  => #<MatchData:0x401d75a0>

and non-whitespace:

  irb(main):007:0> /\S/.match("\013")
  => #<MatchData:0x401d9c38>

Rather hard to deduce....


David

-- 
David A. Black
dblack@wobblini.net