From: Jean Louis <bugs@gnu.support>
To: help-gnu-emacs@gnu.org
Subject: Re: Emacs Modular Configuration: the preferable way.
Date: Tue, 22 Jun 2021 03:17:18 +0300 [thread overview]
Message-ID: <YNEsDkm4vTxves05@protected.localdomain> (raw)
In-Reply-To: <87czsewys6.fsf@zoho.eu>
* Emanuel Berg via Users list for the GNU Emacs text editor <help-gnu-emacs@gnu.org> [2021-06-22 03:04]:
> > In some functions it matters if you end filename with
> > a slash or not when you work with directories.
>
> I can imagine the situation but if it should do different
> things depending on if it is a directory or a regular file, it
> is better for these functions themselves to determine what it
> is, and not rely on the user of the function to insert a slash
> to denote a directory...
(setq file "") ⇒ ""
(file-exists-p file) ⇒ t ;; this is funny to me, but I guess both
;; directory and file are files...
(file-exists-p "/") ⇒ t ;; aha, directory is file too...
Then:
(expand-file-name file) ⇒ "/home/data1/protected/tmp" ;; aha, this one is
;; directory,
;; that is why
;; empty string
;; is considered
;; file.
(file-name-as-directory "") ⇒ "./" ;; now it makes more sense
and now we get it as directory with a slash:
(file-name-as-directory (expand-file-name "")) ⇒ "/home/data1/protected/tmp/"
(defun directory (file)
(when (and (stringp file) (file-exists-p file))
(file-name-as-directory (expand-file-name file))))
(directory "") ⇒ "/home/data1/protected/tmp/" ;; because that is my current directory
(directory "/home") ⇒ "/home/"
If directory does not exist, return NIL:
(directory "/home-is-not-here") ⇒ nil
--
Jean
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next prev parent reply other threads:[~2021-06-22 0:17 UTC|newest]
Thread overview: 86+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-21 1:40 Emacs Modular Configuration: the preferable way Hongyi Zhao
2021-06-21 2:56 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-06-21 6:40 ` Jean Louis
2021-06-21 16:31 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-06-21 19:55 ` Jean Louis
2021-06-22 0:06 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-06-21 10:14 ` Arthur Miller
2021-06-21 16:40 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-06-21 18:25 ` [External] : " Drew Adams
2021-06-26 0:17 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-06-26 0:31 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-06-21 18:38 ` Arthur Miller
2021-06-22 0:03 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-06-22 0:17 ` Jean Louis [this message]
2021-06-22 7:52 ` Arthur Miller
2021-06-26 6:58 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-06-21 11:29 ` Eli Zaretskii
2021-06-21 12:45 ` Philip Kaludercic
2021-06-21 12:55 ` Eli Zaretskii
2021-06-21 13:59 ` [External] : " Drew Adams
2021-06-21 16:51 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-06-21 18:08 ` Eli Zaretskii
2021-06-21 18:26 ` FW: " Drew Adams
2021-06-26 0:06 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-06-21 14:11 ` tomas
2021-06-21 16:47 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-06-21 18:06 ` Eli Zaretskii
2021-06-21 21:09 ` Jean Louis
2021-06-22 11:45 ` Eli Zaretskii
2021-06-22 12:29 ` Jean Louis
2021-06-22 13:07 ` Eli Zaretskii
2021-06-21 20:05 ` Stefan Monnier via Users list for the GNU Emacs text editor
2021-06-22 0:16 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-06-21 21:07 ` Jean Louis
2021-06-22 0:33 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-06-22 0:52 ` Printf and quoting in general, SQL injection in particular Jean Louis
2021-06-26 6:50 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-06-26 7:30 ` Yuri Khan
2021-06-26 7:57 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-06-26 9:37 ` tomas
2021-06-28 7:02 ` Jean Louis
2021-07-06 2:12 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-07-06 2:46 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-06-21 20:36 ` Emacs Modular Configuration: the preferable way Jean Louis
2021-06-21 21:15 ` Printf and quoting in general, SQL injection in particular [was: Emacs Modular Configuration: the preferable way] tomas
2021-06-21 21:29 ` Jean Louis
2021-06-22 0:31 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-06-22 0:47 ` Jean Louis
2021-06-26 6:31 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-06-28 6:56 ` Jean Louis
2021-07-06 1:57 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-07-06 20:04 ` Jean Louis
2021-07-06 20:19 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-06-22 0:23 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-06-22 12:12 ` Eli Zaretskii
2021-06-22 12:37 ` Jean Louis
2021-06-22 13:10 ` Eli Zaretskii
2021-06-22 15:45 ` Jean Louis
2021-06-22 16:04 ` Eli Zaretskii
2021-06-22 18:01 ` Jean Louis
2021-06-22 18:25 ` Eli Zaretskii
2021-06-26 6:46 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-06-26 7:15 ` Eli Zaretskii
2021-06-28 7:04 ` Jean Louis
2021-07-06 2:05 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-07-06 20:09 ` Jean Louis
2021-07-06 20:23 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-07-07 0:00 ` Jean Louis
2021-06-28 6:59 ` Jean Louis
2021-07-06 2:02 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-07-06 20:06 ` Jean Louis
2021-07-06 20:20 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-06-26 6:41 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-06-26 6:39 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-06-21 16:42 ` Emacs Modular Configuration: the preferable way Emanuel Berg via Users list for the GNU Emacs text editor
2021-06-22 12:50 ` Lars Ingebrigtsen
2021-06-26 8:05 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-06-21 20:02 ` Jean Louis
2021-06-22 0:11 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-06-22 0:19 ` Jean Louis
2021-06-21 6:37 ` Jean Louis
2021-06-21 7:00 ` Hongyi Zhao
2021-06-21 10:06 ` Arthur Miller
2021-06-21 10:26 ` Hongyi Zhao
2021-06-21 11:10 ` Arthur Miller
2021-06-23 2:17 ` Hongyi Zhao
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