Newsgroups: comp.lang.c
Path: utzoo!henry
From: henry@zoo.toronto.edu (Henry Spencer)
Subject: Re: Why is tolower behave different???
Message-ID: <1990Jul24.151116.20575@zoo.toronto.edu>
Organization: U of Toronto Zoology
References: <2841@elrond.CalComp.COM> <1863@tkou02.enet.dec.com> <1990Jul23.040004.12292@laguna.ccsf.caltech.edu>
Date: Tue, 24 Jul 90 15:11:16 GMT

In article <1990Jul23.040004.12292@laguna.ccsf.caltech.edu> bruce@seismo.gps.caltech.edu (Bruce Worden) writes:
>... in the pre-ANSI standard version of K&R, it is not
>quite clear what behavior tolower() should have when the argument
>is already lower case...

The only explicit statement you will find about tolower()'s behavior in
the early days was that given an uppercase letter, it produced the
corresponding lowercase letter.  Its behavior on any other input was
in fact undefined.
-- 
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