From: Eli Zaretskii <eliz@gnu.org>
To: help-gnu-emacs@gnu.org
Subject: Re: Why does (file-exists-p "") return t?
Date: Sat, 11 Feb 2023 12:39:04 +0200 [thread overview]
Message-ID: <83fsbcjxkn.fsf@gnu.org> (raw)
In-Reply-To: <Y+XF8TYpT6Qn6Brb@protected.localdomain> (message from Jean Louis on Fri, 10 Feb 2023 07:20:01 +0300)
> Date: Fri, 10 Feb 2023 07:20:01 +0300
> From: Jean Louis <bugs@gnu.support>
> Cc: eliz@gnu.org, help-gnu-emacs@gnu.org
>
> * Edgar Vincent <e-v@posteo.net> [2023-02-10 00:11]:
> > I didn’t know that file-exists-p used expand-file-name, but it does seem obvious.
>
> To avoid the problem maybe you should use `expand-file-name' before
> you check it with `file-exists-p'
But there's no problem here.
All Emacs functions that accept file names use expand-file-name
internally before passing the file name to system APIs, because every
file name in Emacs can be relative to the current buffer's
default-directory. IOW, Emacs pretends to change its current
directory to the buffer's default-directory when you switch buffers.
prev parent reply other threads:[~2023-02-11 10:39 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-02-09 10:41 Why does (file-exists-p "") return t? Edgar Vincent
2023-02-09 10:56 ` Gregory Heytings
2023-02-09 11:10 ` Edgar Vincent
2023-02-09 13:36 ` Eli Zaretskii
2023-02-09 21:05 ` Edgar Vincent
2023-02-10 4:20 ` Jean Louis
2023-02-11 10:10 ` Bruno Barbier
2023-02-11 11:28 ` Jean Louis
2023-02-11 19:34 ` Bruno Barbier
2023-02-11 10:39 ` Eli Zaretskii [this message]
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