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From: Tim Rentsch <tr.17687@z991.linuxsc.com>
Newsgroups: comp.lang.c
Subject: Re: _BitInt(N)
Date: Sun, 21 Dec 2025 22:24:40 -0800
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Keith Thompson <Keith.S.Thompson+u@gmail.com> writes:

> Tim Rentsch <tr.17687@z991.linuxsc.com> writes:
>
>> Richard Heathfield <rjh@cpax.org.uk> writes:
>>
>>> On 02/12/2025 23:33, Keith Thompson wrote:
>
> [...]
>
>>>> But trigraphs have been removed in C23.
>>>
>>> Then so, in some mainframe environments, have curly braces.  I suppose
>>> their fix will be to not adopt C23.
>>
>> Curly braces are still available by means of the digraphs <% and %>.
>
> True, and that's probably good enough, but digraphs aren't recognized
> in string literals, character constants, header names, or comments.

Comments are irrelevant because they aren't translated;  if someone
wants to use trigraphs (or digraphs) for curly braces inside a
comment they are perfectly free to do so.

Header names can be handled by copying or linking the file with a
new name, where the new name has <% and %> in place of curly braces.

String literals and character constants are a mild inconvenience,
but nothing more than that - just four #define of symbols with
appropriate values.  Once those values are determined it should be
straightforward to effect the necessary changes programmatically.