GNU bug report logs - #57129
29.0.50; Improve behavior of conditionals in Eshell

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From: Paul Eggert <eggert <at> cs.ucla.edu>
To: Eli Zaretskii <eliz <at> gnu.org>, Bruno Haible <bruno <at> clisp.org>
Cc: jporterbugs <at> gmail.com, larsi <at> gnus.org, bug-gnulib <at> gnu.org, 57129 <at> debbugs.gnu.org
Subject: bug#57129: 29.0.50; Improve behavior of conditionals in Eshell
Date: Tue, 16 Aug 2022 10:25:57 -0700

[Message part 1 (text/plain, inline)]

On 8/16/22 09:25, Eli Zaretskii wrote:
> why does this work differently on
> different platforms?

Platforms that lack clock_gettime and CLOCK_MONOTONIC fall back on a 
deterministic algorithm. Presumably MS-DOS one of the few such 
platforms, which is why the problem is observed only on MS-DOS.

How about something like the attached patch to Gnulib's lib/tempname.c? 
If I understand things correctly this should make the names random 
enough on MS-DOS, though Emacs itself still needs a patch as I mentioned 
a few minutes ago.

If this patch isn't good enough for MS-DOS, what sort of random bits are 
easily available on that platform? We don't need anything 
cryptographically secure; a higher-res clock should suffice.

[rand.diff (text/x-patch, attachment)]

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