From: Michael Albinus <michael.albinus@gmx.de>
To: emacs-devel@gnu.org
Subject: Re: file-exists-p on empty string
Date: Wed, 27 Feb 2019 17:01:29 +0100 [thread overview]
Message-ID: <87wolldxuu.fsf@gmx.de> (raw)
In-Reply-To: <m2a7ihfd9a.fsf@gmail.com> (Robert Pluim's message of "Wed, 27 Feb 2019 16:43:29 +0100")
Robert Pluim <rpluim@gmail.com> writes:
>> I believe the current behavior is correct. file-exists-p calls
>> expand-file-name, and (expand-file-name "") returns always
>> default-directory.
>
> Thatʼs not described in the doc-string though, so itʼs surprising
> behaviour.
Agreed, shall be documented at least. But I'm pretty sure there's code
in the wild which depends on this behavior. Maybe not explicitly, but
via calling file-exists-p with an empty string, which has been computed somehow.
I would expect this for example for Tramp. Do we want to change such
basic behavior?
Btw, several other basic file name operations behave similar. Try
(file-attributes "") or (file-readable-p "") or (file-directory-p "") .
> Robert
Best regards, Michael.
next prev parent reply other threads:[~2019-02-27 16:01 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-02-27 12:29 file-exists-p on empty string Evgeny Zajcev
2019-02-27 14:15 ` Michael Albinus
2019-02-27 15:29 ` Troy Hinckley
2019-02-27 15:43 ` Robert Pluim
2019-02-27 16:01 ` Michael Albinus [this message]
2019-02-27 16:55 ` Eli Zaretskii
2019-02-27 18:09 ` Michael Albinus
2019-02-27 16:11 ` Eli Zaretskii
2019-02-27 16:16 ` Robert Pluim
2019-02-27 16:30 ` Andreas Schwab
2019-02-27 19:40 ` lg.zevlg
2019-02-27 15:53 ` Stefan Monnier
2019-02-27 16:00 ` Robert Pluim
2019-02-27 16:15 ` Stefan Monnier
2019-02-27 16:09 ` Eli Zaretskii
2019-02-27 18:42 ` lg.zevlg
2019-02-27 18:46 ` Eli Zaretskii
2019-02-27 19:04 ` lg.zevlg
2019-02-27 19:16 ` Eli Zaretskii
2019-02-27 19:29 ` lg.zevlg
2019-02-27 19:30 ` Stefan Monnier
-- strict thread matches above, loose matches on Subject: below --
2019-02-27 20:07 lg.zevlg
2019-02-27 21:18 ` Stefan Monnier
2019-02-27 22:01 ` Drew Adams
2019-02-28 3:24 ` Stefan Monnier
2019-03-06 9:51 ` Michael Albinus
2019-03-08 6:11 ` Stefan Monnier
2019-03-09 8:48 ` Michael Albinus
2019-02-27 22:09 lg.zevlg
2019-02-27 22:23 ` Drew Adams
2019-02-27 22:41 ` Evgeny Zajcev
2019-02-27 23:23 ` Drew Adams
2019-02-28 0:08 ` Evgeny Zajcev
2019-02-28 1:16 ` Stefan Monnier
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
List information: https://www.gnu.org/software/emacs/
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=87wolldxuu.fsf@gmx.de \
--to=michael.albinus@gmx.de \
--cc=emacs-devel@gnu.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
Code repositories for project(s) associated with this public inbox
https://git.savannah.gnu.org/cgit/emacs.git
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).