From: Ian Macdonald <ian@...>
Date: 2007-02-15T05:10:00+09:00
Subject: Re: Puzzling regex behaviour

On Thu 15 Feb 2007 at 03:16:27 +0900, Rob Biedenharn wrote:

> Why don't you just find out which characters are in the [:alnum:] and  
> \w sets?
> 
> $ LANG=nl_NL irb
> >> alnums = (0..0377).select {|c| c.chr =~ /[[:alnum:]]/ }.map {|c| 
> c.chr}.join
> => "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz\252 
> \265\272\300\301\302\303\304\305\306\307\310\311\312\313\314\315\316 
> \317\320\321\322\323\324\325\326\330\331\332\333\334\335\336\337\340 
> \341\342\343\344\345\346\347\350\351\352\353\354\355\356\357\360\361 
> \362\363\364\365\366\370\371\372\373\374\375\376\377"
> >> dubyas = (0..0377).select {|c| c.chr =~ /\w/ }.map {|c|c.chr}.join
> => "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ_abcdefghijklmnopqrstuvwxyz"

Yes, but all this really does is indicate that the irb behaviour is
the correct one.

When I run this in a stand-alone script, I get this:

$ LANG=nl_NL ./foo
"0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"

It's almost as if the locale isn't being propagated to the process via
the environment. But...

$ LANG=nl_NL ruby -e "puts ENV['LANG']"
nl_NL

...it _is_ being propagated.

Is is the same for you?

Ian
-- 
Ian Macdonald               | When a man is tired of London, he is tired 
ian@caliban.org             | of life.   -- Samuel Johnson 
http://www.caliban.org/     | 
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