GNU bug report logs - #67541
diff -r reporting two fifos as somehow different

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Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: kevin dankwardt <kevin.dankwardt <at> gmail.com>
To: bug-diffutils <at> gnu.org
Subject: diff -r reporting two fifos as somehow different
Date: Wed, 29 Nov 2023 18:56:16 -0800

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

Reproduce:

$ mkdir /tmp/a.dir

$ mkdir /tmp/b.dir

$ mkfifo /tmp/a.dir/afifo

$ mkfifo /tmp/b.dir/afifo

$ diff -r /tmp/a.dir /tmp/b.dir

*File /tmp/a.dir/afifo is a fifo while file /tmp/b.dir/afifo is a fifo*

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Message #8 received at 67541 <at> debbugs.gnu.org (full text, mbox):

From: Paul Eggert <eggert <at> cs.ucla.edu>
To: kevin dankwardt <kevin.dankwardt <at> gmail.com>, 67541 <at> debbugs.gnu.org
Subject: Re: [bug-diffutils] bug#67541: diff -r reporting two fifos as somehow
 different
Date: Wed, 29 Nov 2023 20:32:36 -0800

On 11/29/23 18:56, kevin dankwardt wrote:
> Reproduce:
> 
> $ mkdir /tmp/a.dir
> 
> $ mkdir /tmp/b.dir
> 
> $ mkfifo /tmp/a.dir/afifo
> 
> $ mkfifo /tmp/b.dir/afifo
> 
> $ diff -r /tmp/a.dir /tmp/b.dir
> 
> *File /tmp/a.dir/afifo is a fifo while file /tmp/b.dir/afifo is a fifo*

I'm not sure I see this as a bug, as they are different fifos. If they 
were opened and read they'd likely have different contents, though it 
wouldn't be a good idea for diff -r to open fifos.

Perhaps the diagnostic message could be improved, though I'm not sure 
what the improved wording would be.

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