GNU bug report logs - #57102
29.0.50; Peculiar file-name-split edge case

Previous Next

Full log

Message #17 received at 57102 <at> debbugs.gnu.org (full text, mbox):

From: Philip Kaludercic <philipk <at> posteo.net>
To: Lars Ingebrigtsen <larsi <at> gnus.org>
Cc: 57102 <at> debbugs.gnu.org
Subject: Re: bug#57102: 29.0.50; Peculiar file-name-split edge case
Date: Fri, 12 Aug 2022 16:29:15 +0000

Lars Ingebrigtsen <larsi <at> gnus.org> writes:

> Philip Kaludercic <philipk <at> posteo.net> writes:
>
>> How sensible is this in the first place?  Shouldn't it rather be
>> something like
>>
>> (file-equal-p (apply #'file-name-concat (file-name-split filename)) filename)
>>
>> [ which is currently likewise not given ]
>>
>> Or to put it differently, who does the preceding empty string benefit if
>> we ignore the condition mentioned in the docstring?  Are there any
>> real-world use-cases?
>
> You need to be able to tell (file-name-split "a/b") => ("a" "b") and
> (file-name-split "/a/b") => ("" "a" "b") apart.

Could one instead prefix the list with a symbol (either `absolute' or
`relative') to distinguish the two cases.  Or do you think that would
just make it more complicated.

Previous Next

GNU bug tracking system
Copyright (C) 1999 Darren O. Benham, 1997,2003 nCipher Corporation Ltd, 1994-97 Ian Jackson.