GNU bug report logs - #18632
24.3.94; image-dired fail when `image-dired-dir' doesn't exist

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Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Thierry Volpiatto <thierry.volpiatto <at> gmail.com>
To: bug-gnu-emacs <at> gnu.org
Subject: 24.3.94; image-dired fail when `image-dired-dir' doesn't exist
Date: Sun, 05 Oct 2014 15:31:42 +0200

If `image-dired-dir' doesn't exists, image-dired fail with 
something like "could not resize image" with no indications on what is happening.
IOW image-dired should create its directory when this one doesn't
exists, or at least send a helpful message to notify user he have first
to create manually this directory.




In GNU Emacs 24.3.94.1 (x86_64-unknown-linux-gnu, X toolkit)
 of 2014-10-03 on dell-14z
Windowing system distributor `The X.Org Foundation', version 11.0.11501000
System Description:	Ubuntu 14.04.1 LTS

Configured using:
 `configure --with-x-toolkit=lucid --without-toolkit-scroll-bars
 --without-gconf --without-gsettings'

Important settings:
  value of $LANG: fr_FR.UTF-8
  locale-coding-system: utf-8-unix

Major mode: Emacs-Lisp

Minor modes in effect:
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  eldoc-in-minibuffer-mode: t
  show-paren-mode: t
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Recent messages:
image-dired-display-image-mode enabled [9 times]
Loading package list...
Loading package list done
Starting Firefox...
[mu4e] Retrieving mail...done
[mu4e] Indexing... processed 14000, updated 0
[mu4e] Indexing completed; processed 14853, updated 0, cleaned-up 6
[mu4e] mu4e-main-mode
Quit
Mark set

Load-path shadows:
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Memory information:
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-- 
Thierry
Get my Gnupg key:
gpg --keyserver pgp.mit.edu --recv-keys 59F29997 

Message #8 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Thierry Volpiatto <thierry.volpiatto <at> gmail.com>
To: bug-gnu-emacs <at> gnu.org
Subject: Re: bug#18632: 24.3.94;
 image-dired fail when `image-dired-dir' doesn't exist
Date: Sun, 05 Oct 2014 16:12:30 +0200

Thierry Volpiatto <thierry.volpiatto <at> gmail.com> writes:

> If `image-dired-dir' doesn't exists, image-dired fail with 
> something like "could not resize image" with no indications on what is happening.
> IOW image-dired should create its directory when this one doesn't
> exists, or at least send a helpful message to notify user he have first
> to create manually this directory.

diff --git a/lisp/image-dired.el b/lisp/image-dired.el
index 114deab..01f88c2 100644
--- a/lisp/image-dired.el
+++ b/lisp/image-dired.el
@@ -1800,7 +1800,8 @@ should feel snappy enough.
 
 If optional argument ORIGINAL-SIZE is non-nil, display image in its
 original size."
-  (let ((new-file (expand-file-name image-dired-temp-image-file))
+  (let ((new-file (expand-file-name image-dired-temp-image-file
+                                    (image-dired-dir)))
         width height command ret
         (image-type 'jpeg))
     (setq file (expand-file-name file))

-- 
Thierry
Get my Gnupg key:
gpg --keyserver pgp.mit.edu --recv-keys 59F29997 

Message #11 received at 18632 <at> debbugs.gnu.org (full text, mbox):

From: Stefan Kangas <stefan <at> marxist.se>
To: Thierry Volpiatto <thierry.volpiatto <at> gmail.com>
Cc: 18632 <at> debbugs.gnu.org
Subject: Re: bug#18632: 24.3.94; image-dired fail when `image-dired-dir'
 doesn't exist
Date: Fri, 30 Aug 2019 00:32:52 +0200

Thierry Volpiatto <thierry.volpiatto <at> gmail.com> writes:

>> If `image-dired-dir' doesn't exists, image-dired fail with
>> something like "could not resize image" with no indications on what is happening.
>> IOW image-dired should create its directory when this one doesn't
>> exists, or at least send a helpful message to notify user he have first
>> to create manually this directory.
>
> diff --git a/lisp/image-dired.el b/lisp/image-dired.el
> index 114deab..01f88c2 100644
> --- a/lisp/image-dired.el
> +++ b/lisp/image-dired.el
> @@ -1800,7 +1800,8 @@ should feel snappy enough.
>
>  If optional argument ORIGINAL-SIZE is non-nil, display image in its
>  original size."
> -  (let ((new-file (expand-file-name image-dired-temp-image-file))
> +  (let ((new-file (expand-file-name image-dired-temp-image-file
> +                                    (image-dired-dir)))
>          width height command ret
>          (image-type 'jpeg))
>      (setq file (expand-file-name file))

I can reproduce this on current master.  The problem happens when the
user removes the image-dired-dir directory (normally
~/.emacs.d/image-dired).

Steps to reproduce:

0. emacs -Q
1. C-x C-f ~/my-image-dir
2. (in shell) rm -rf ~/.emacs.d/image-dired/  # value of (image-dired-dir)
3. (in emacs): RET

Now I see the error message "Unable to resize".

However, I think the above patch is only part of the solution.  After
applying it, I can indeed open an image successfully.  But I'm now
seeing a different problem: After opening an image (step 3 above), all
the thumbnails are suddenly missing from the *image-dired* buffer.

I subjectively think that the original error is less severe than the
new one.  Without the fix, at least the images stay as they are in the
*image-dired* buffer.

If anyone disagrees, they could easily install the above patch on
master and we would arguably be no worse off than we are now.  But we
would still need to fix the second problem.

Thanks,
Stefan Kangas

Message #20 received at 18632 <at> debbugs.gnu.org (full text, mbox):

From: Thierry Volpiatto <thierry.volpiatto <at> gmail.com>
To: Stefan Kangas <stefan <at> marxist.se>
Cc: 18632 <at> debbugs.gnu.org
Subject: Re: bug#18632: 24.3.94;
 image-dired fail when `image-dired-dir' doesn't exist
Date: Fri, 30 Aug 2019 07:34:19 +0200

Stefan Kangas <stefan <at> marxist.se> writes:

> However, I think the above patch is only part of the solution.  After
> applying it, I can indeed open an image successfully.  But I'm now
> seeing a different problem: After opening an image (step 3 above), all
> the thumbnails are suddenly missing from the *image-dired* buffer.

Of course you removed the image-dired directory that was containing the
thumbnails, now you have to create again all your thumbnails.

-- 
Thierry

Get my Gnupg key:
gpg --keyserver pgp.mit.edu --recv-keys 59F29997

Message #23 received at 18632 <at> debbugs.gnu.org (full text, mbox):

From: Eli Zaretskii <eliz <at> gnu.org>
To: Stefan Kangas <stefan <at> marxist.se>
Cc: 18632 <at> debbugs.gnu.org, thierry.volpiatto <at> gmail.com
Subject: Re: bug#18632: 24.3.94;
 image-dired fail when `image-dired-dir' doesn't exist
Date: Fri, 30 Aug 2019 09:31:08 +0300

> From: Stefan Kangas <stefan <at> marxist.se>
> Date: Fri, 30 Aug 2019 00:32:52 +0200
> Cc: 18632 <at> debbugs.gnu.org
> 
> I can reproduce this on current master.  The problem happens when the
> user removes the image-dired-dir directory (normally
> ~/.emacs.d/image-dired).
> 
> Steps to reproduce:
> 
> 0. emacs -Q
> 1. C-x C-f ~/my-image-dir
> 2. (in shell) rm -rf ~/.emacs.d/image-dired/  # value of (image-dired-dir)
> 3. (in emacs): RET
> 
> Now I see the error message "Unable to resize".

How about recreating the missing directory in this case, after asking
for user's permission?

Message #26 received at 18632 <at> debbugs.gnu.org (full text, mbox):

From: Stefan Kangas <stefan <at> marxist.se>
To: Thierry Volpiatto <thierry.volpiatto <at> gmail.com>
Cc: 18632 <at> debbugs.gnu.org
Subject: Re: bug#18632: 24.3.94; image-dired fail when `image-dired-dir'
 doesn't exist
Date: Fri, 30 Aug 2019 12:39:39 +0200

Thierry Volpiatto <thierry.volpiatto <at> gmail.com> writes:

> Stefan Kangas <stefan <at> marxist.se> writes:
>
> > However, I think the above patch is only part of the solution.  After
> > applying it, I can indeed open an image successfully.  But I'm now
> > seeing a different problem: After opening an image (step 3 above), all
> > the thumbnails are suddenly missing from the *image-dired* buffer.
>
> Of course you removed the image-dired directory that was containing the
> thumbnails, now you have to create again all your thumbnails.

Yes, I agree with that, but I'm saying that it would be best if that
was done automatically.

Thanks,
Stefan Kangas

Message #29 received at 18632 <at> debbugs.gnu.org (full text, mbox):

From: Stefan Kangas <stefan <at> marxist.se>
To: Eli Zaretskii <eliz <at> gnu.org>
Cc: 18632 <at> debbugs.gnu.org, Thierry Volpiatto <thierry.volpiatto <at> gmail.com>
Subject: Re: bug#18632: 24.3.94; image-dired fail when `image-dired-dir'
 doesn't exist
Date: Fri, 30 Aug 2019 12:41:51 +0200

Eli Zaretskii <eliz <at> gnu.org> writes:

> How about recreating the missing directory in this case, after asking
> for user's permission?

Yes, that would be a good solution.  I actually had something like
that in mind when I wrote my original message, but I see now that I
never spelled it out.  Thanks for pointing it out.

Best regards,
Stefan Kangas

Message #32 received at 18632 <at> debbugs.gnu.org (full text, mbox):

From: Lars Ingebrigtsen <larsi <at> gnus.org>
To: Stefan Kangas <stefan <at> marxist.se>
Cc: Eli Zaretskii <eliz <at> gnu.org>,
 Thierry Volpiatto <thierry.volpiatto <at> gmail.com>, 18632 <at> debbugs.gnu.org
Subject: Re: bug#18632: 24.3.94; image-dired fail when `image-dired-dir'
 doesn't exist
Date: Thu, 26 Sep 2019 18:37:45 +0200

Stefan Kangas <stefan <at> marxist.se> writes:

> Eli Zaretskii <eliz <at> gnu.org> writes:
>
>> How about recreating the missing directory in this case, after asking
>> for user's permission?
>
> Yes, that would be a good solution.  I actually had something like
> that in mind when I wrote my original message, but I see now that I
> never spelled it out.  Thanks for pointing it out.

I'm not familiar with image-dired at all, but the original patch did
create the missing directory.  But what it didn't do was recreating the
thumbnails -- but can that be done in a sensible fashion?

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no

Message #35 received at 18632 <at> debbugs.gnu.org (full text, mbox):

From: Stefan Kangas <stefankangas <at> gmail.com>
To: Thierry Volpiatto <thierry.volpiatto <at> gmail.com>
Cc: 18632 <at> debbugs.gnu.org
Subject: Re: bug#18632: 24.3.94; image-dired fail when `image-dired-dir'
 doesn't exist
Date: Thu, 15 Sep 2022 17:39:33 -0700

close 18632 29.1
thanks

Stefan Kangas <stefan <at> marxist.se> writes:

> Thierry Volpiatto <thierry.volpiatto <at> gmail.com> writes:
>
>>> If `image-dired-dir' doesn't exists, image-dired fail with
>>> something like "could not resize image" with no indications on what is happening.
>>> IOW image-dired should create its directory when this one doesn't
>>> exists, or at least send a helpful message to notify user he have first
>>> to create manually this directory.
>>
>> diff --git a/lisp/image-dired.el b/lisp/image-dired.el
>> index 114deab..01f88c2 100644
>> --- a/lisp/image-dired.el
>> +++ b/lisp/image-dired.el
>> @@ -1800,7 +1800,8 @@ should feel snappy enough.
>>
>>  If optional argument ORIGINAL-SIZE is non-nil, display image in its
>>  original size."
>> -  (let ((new-file (expand-file-name image-dired-temp-image-file))
>> +  (let ((new-file (expand-file-name image-dired-temp-image-file
>> +                                    (image-dired-dir)))
>>          width height command ret
>>          (image-type 'jpeg))
>>      (setq file (expand-file-name file))
>
> I can reproduce this on current master.  The problem happens when the
> user removes the image-dired-dir directory (normally
> ~/.emacs.d/image-dired).

I can no longer reproduce this on current master.  I think this was
fixed when we rewrote `image-dired-display-image-mode' to be based on
`image-mode' instead of using external programs to convert the picture.

If you are still seeing this issue, please reply to this email (use
"Reply to all" in your email client) and we can reopen the bug report.

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