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From: Keith Thompson <kst-u@mib.org>
Newsgroups: comp.lang.c
Subject: Re: "C's Biggest Mistake"
Date: Sat, 07 Apr 2018 19:21:31 -0700
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bartc <bc@freeuk.com> writes:
> On 08/04/2018 00:03, Keith Thompson wrote:
>> The advantage of writing isupper(c) is even greater if you care about
>> letters outside the English alphabet.  Imagine having accented letters
>> in your name and having to deal with software written by people with
>> your attitude.  "Sorry, your name is not valid."
>
> If I was involved in that these days I would make sure it worked properly.

And yet you don't seem to mind assuming that all upper case letters have
values in the range 'A' ... 'Z'.

> This code doesn't work on Windows:
[...]
>    strupr(s);
[...]

strupr() is non-standard, Microsoft-specific, and deprecated.
(Microsoft's documentation incorrectly claims that it's defined by
POSIX.)

-- 
Keith Thompson (The_Other_Keith) kst-u@mib.org  <http://www.ghoti.net/~kst>
Working, but not speaking, for JetHead Development, Inc.
"We must do something.  This is something.  Therefore, we must do this."
    -- Antony Jay and Jonathan Lynn, "Yes Minister"