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Date: Fri, 05 Aug 2011 01:32:41 +0200
From: magnum <>
Subject: ?z character class vs. "valid character" class

What is the ?z (any character) class used for? Is it used anywhere, by 
anyone? It's current meaning is indeed *any* character, valid or not.

Reason I ask is that we are contemplating a "valid" class, that can be 
used to reject candidates containing characters not valid for the chosen 
codepage. The ?v name came to mind but it's already taken. Now I noticed 
the ?z and I can't really think of any use for it - but if we modify it 
to mean "match any *valid* character" I see many uses.

Maybe it was meant for PP stuff, much like the ':'. Failing to hijack 
?z, any other suggestion for a better letter?


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