bug#24409: 25.1.1; dired-jump: Interactive call w/ prefix arg move to wrong file line

[Tino Calancha]

On Mon, 12 Sep 2016, Eli Zaretskii wrote:

> > From: Tino Calancha <tino.calancha@gmail.com>
> > Date: Mon, 12 Sep 2016 13:37:14 +0900 (JST)
> > cc: Tino Calancha <tino.calancha@gmail.com>, 24409@debbugs.gnu.org
> >
> > > I think a better comment would be to say that dired-goto-file requires
> > > its argument to be an absolute file name, and the result of
> > > read-file-name could be an abbreviated file name.
> > Thank you.  I rewrote the comment/log message with your suggestion.
> > I included the word canonical: an abbreviated file name could be
> > an absolute file name, for instance ~/foo, but dired-goto-file,
> > in addition to absolute file name, requires the substitution of '~/'.
>
> We don't have a notion of a "canonical" file name in Emacs, so I'm not
> sure this helps.  OTOH, "absolute file name" is quite clear, and I
> don't think people will be confused by the fact that ~/foo returns
> non-nil from file-name-absolute-p.
Ok, i will not use the word canonical.
> > +When FILE-NAME is non-nil, move to FILE-NAME line in Dired.
>
>  "When FILE-NAME is non-nil, jump to its line in Dired."
> (Try to avoid saying the same thing twice too close to one another.)
Added.  Thank you very much.

Once you give me the LGTM i will apply the following corrected patch:

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> From e1541dd78cb5bf81247bd4025a603cef81f3a3cb Mon Sep 17 00:00:00 2001
From: Tino Calancha <tino.calancha@gmail.com>
Date: Tue, 13 Sep 2016 15:59:45 +0900
Subject: [PATCH] dired-jump: Expand file-name before dired-goto-file call

Command dired-goto-file requires its argument to be an absolute
file name.  Interactively FILE-NAME is read with read-file-name,
which could return an abbreviated file name (Bug#24409).
* lisp/dired-x.el (dired-jump): Use expand-file-name on FILE-NAME.
Clarify in doc string the meaning of arg FILE-NAME.
---
 lisp/dired-x.el | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/lisp/dired-x.el b/lisp/dired-x.el
index be762e6..41c2256 100644
--- a/lisp/dired-x.el
+++ b/lisp/dired-x.el
@@ -413,14 +413,19 @@ dired-jump
 In case the proper Dired file line cannot be found, refresh the dired
 buffer and try again.
 When OTHER-WINDOW is non-nil, jump to Dired buffer in other window.
-Interactively with prefix argument, read FILE-NAME and
-move to its line in dired."
+When FILE-NAME is non-nil, jump to its line in Dired.
+Interactively with prefix argument, read FILE-NAME."
   (interactive
    (list nil (and current-prefix-arg
                   (read-file-name "Jump to Dired file: "))))
   (if (bound-and-true-p tar-subfile-mode)
       (switch-to-buffer tar-superior-buffer)
-    (let* ((file (or file-name buffer-file-name))
+    ;; Expand file-name before `dired-goto-file' call:
+    ;; `dired-goto-file' requires its argument to be an absolute
+    ;; file name; the result of `read-file-name' could be
+    ;; an abbreviated file name (Bug#24409).
+    (let* ((file (or (and file-name (expand-file-name file-name))
+                     buffer-file-name))
            (dir (if file (file-name-directory file) default-directory)))
       (if (and (eq major-mode 'dired-mode) (null file-name))
           (progn
--
2.9.3

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In GNU Emacs 25.1.50.1 (x86_64-pc-linux-gnu, GTK+ Version 3.21.5)
 of 2016-09-13
Repository revision: 367f8568bc9e759ebdfb423648891efa0346456b