Question mark

[Piotr Karocki]

In my humble opinion, only "portable filename character set" should be used
in filenames.
This is the one and only character set that is truly portable between
operating systems, works everywhere and everytime, without any problems or
inconveniences.

Defined in POSIX (IEEE Std 1003.1)
https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/V1_chap03.html#tag_03_282


From: Unicode [mailto:unicode-bounces at corp.unicode.org] On Behalf Of Phil
Smith III via Unicode
Sent: Monday, 10 June 2024 18:24
To: unicode at corp.unicode.org
Subject: RE: Question mark

Ah.  A key detail! I would not think that it would make sense to add this,
as folks will be fatally confused by it. Same as putting slashes
(back/forward) in filenames. Just Don’t Do It.

Besides, any sane normalization would converge them anyway, right? And then
people have a filename they can’t use even if they copy/paste!

From: Unicode <unicode-bounces at corp.unicode.org> On Behalf Of Alex Plantema
via Unicode
Sent: Monday, June 10, 2024 12:20 PM
To: unicode at corp.unicode.org
Subject: Re: Question mark

Op ma 10-06-2024 om 18:05 schreef Phil Smith III via Unicode:
How is a question mark “prohibited” by Windows? ⇐There’s one now, in
Windows!

It isn't allowed in file names because it serves as a wildcard. The same for
the asterisk.

-- 
Alex.