On 15/02/2025 06:22, Paul Eggert wrote:
> On 2025-02-12 22:45, lilydjwg wrote:
>> cat: -: input file is output file
> 
> Thanks for the bug report. The symptoms you observe are a bug in 'cat'.
> I also see a bug in Gawk which I reported to the Gawk maintainer
> <https://lists.gnu.org/r/bug-gawk/2025-02/msg00003.html>. I don't see a
> bug in zsh or fish but perhaps I'm missing something.
> 
> To fix the 'cat' bug I installed the attached patch into bleeding-edge
> Coreutils on Savannah, and something like this patch should appear in
> the next release.

 From my TODO list, attached is a test case for this issue.
I'll push this tomorrow some time.

cheers,
Pádraig