GNU bug report logs - #79236
30.1; file-directory-p in read-file-name prevents TRAMP protocol, user, and host completions

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From: help-debbugs <at> gnu.org (GNU bug Tracking System)
To: "Timothy J. Miller" <tmiller <at> mitre.org>
Subject: bug#79236: closed (Re: bug#79236: 30.1; file-directory-p in
 read-file-name prevents TRAMP protocol, user, and host completions)
Date: Fri, 29 Aug 2025 11:54:03 +0000

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

Your bug report

#79236: 30.1; file-directory-p in read-file-name prevents TRAMP protocol, user, and host completions

which was filed against the emacs package, has been closed.

The explanation is attached below, along with your original report.
If you require more details, please reply to 79236 <at> debbugs.gnu.org.

-- 
79236: https://debbugs.gnu.org/cgi/bugreport.cgi?bug=79236
GNU Bug Tracking System
Contact help-debbugs <at> gnu.org with problems

[Message part 2 (message/rfc822, inline)]

From: Michael Albinus <michael.albinus <at> gmx.de>
To: Eli Zaretskii <eliz <at> gnu.org>
Cc: Dmitry Gutov <dmitry <at> gutov.dev>, 79236-done <at> debbugs.gnu.org,
 tmiller <at> mitre.org, Stefan Monnier <monnier <at> iro.umontreal.ca>
Subject: Re: bug#79236: 30.1; file-directory-p in read-file-name prevents
 TRAMP protocol, user, and host completions
Date: Fri, 29 Aug 2025 13:53:00 +0200

Version: 31.1

Michael Albinus <michael.albinus <at> gmx.de> writes:

Hi,

> The appended patch seems to fix it. But I don't know whether this is the
> way to go. Stefan?

No comment, so I've pushed the patch to master (plus some needed changes
in Tramp). Closing the bug.

Best regards, Michael.

[Message part 3 (message/rfc822, inline)]

From: "Timothy J. Miller" <tmiller <at> mitre.org>
To: bug-gnu-emacs <at> gnu.org
Subject: 30.1; file-directory-p in read-file-name prevents TRAMP protocol,
 user, and host completions
Date: Thu, 14 Aug 2025 08:34:43 -0500

From `emacs -Q`:

(require 'tramp)
(read-file-name "With file-directory-p: " default-directory nil t
nil 'file-directory-p)

- Type "/<TAB>" at the prompt. TRAMP protocols are missing from
 the completions list.

- Type "/ssh:<TAB>" at the prompt. TRAMP username & hostname are
 missing from the completion list.

By way of contrast:

(read-file-name "Without file-directory-p: " default-directory nil
t nil nil)

Repeating the two test cases above, TRAMP suggestions are present.

read-directory-name calls read-file-name with file-directory-p as
the match predicate, and project.el project-prompt-project-dir
loads new projects with read-directory-name. This bug prevents
easy selection of projects on remote servers. Because find-file
works correctly with the same emacs configuration, this breaks
user expectations.


In GNU Emacs 30.1 (build 1, aarch64-apple-darwin21.6.0, NS
appkit-2113.65 Version 12.7.6 (Build 21H1320)) of 2025-02-24
built on armbob.lan
Windowing system distributor 'Apple', version 10.3.2575
System Description:  macOS 15.6

Configured using:
'configure --with-ns
'--enable-locallisppath=/Library/Application
Support/Emacs/${version}/site-lisp:/Library/Application
Support/Emacs/site-lisp' --with-modules
'CFLAGS=-DFD_SETSIZE=10000 -DDARWIN_UNLIMITED_SELECT'
--with-x-toolkit=no'

Configured features:
ACL GLIB GMP GNUTLS JPEG LIBXML2 MODULES NOTIFY KQUEUE NS PDUMPER
PNG RSVG SQLITE3 THREADS TIFF TOOLKIT_SCROLL_BARS TREE_SITTER
WEBP XIM ZLIB

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Load-path shadows:
/Users/tmiller/.emacs.d/elpa/ef-themes-1.10.0/theme-loaddefs hides
/Applications/Emacs.app/Contents/Resources/lisp/theme-loaddefs

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Memory information:
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(vector-slots 8 969100 119219) (floats 8 5747 6798) (intervals 56
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--
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