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* bug#58101: 28.2; image-size nonsensical
@ 2022-09-26 18:41 Thomas Hühn
  2022-09-27  6:05 ` Eli Zaretskii
  0 siblings, 1 reply; 17+ messages in thread
From: Thomas Hühn @ 2022-09-26 18:41 UTC (permalink / raw)
  To: 58101



* Download image https://imgs.xkcd.com/comics/two_key_system_2x.png to
   disk

* Run (create-image "two_key_system_2x.png") --> (image :type png :file
   "two_key_system_2x.png" :scale 1.2038461538461538 :transform-smoothing
   t)

* Run (image-size (create-image "two_key_system_2x.png") :pixels) -->
   (30 . 30)

Expected result: (1291 . 632)


In GNU Emacs 28.2 (build 2, x86_64-w64-mingw32)
  of 2022-09-13 built on fv-az448-195
Repository revision: ea87108e99fb3243a44af1a09a1a0c8f29a2ab37
Repository branch: master
Windowing system distributor 'Microsoft Corp.', version 10.0.22621
System Description: Microsoft Windows 10 Pro (v10.0.2009.22621.521)

Configured using:
  'configure --prefix=/mingw64 --build=x86_64-w64-mingw32 --with-modules
  --without-dbus --without-compress-install --with-native-compilation
  'CFLAGS=-march=x86-64 -mtune=generic -O2 -pipe'
  CPPFLAGS=-D__USE_MINGW_ANSI_STDIO=1 LDFLAGS=-pipe'

Configured features:
ACL GIF GMP GNUTLS HARFBUZZ JPEG JSON LIBXML2 MODULES NATIVE_COMP NOTIFY
W32NOTIFY PDUMPER PNG RSVG SOUND THREADS TIFF TOOLKIT_SCROLL_BARS XPM
ZLIB

Important settings:
   value of $LC_ALL: C.UTF8
   value of $LANG: en
   locale-coding-system: cp1252

Major mode: Lisp Interaction

Minor modes in effect:
   rainbow-delimiters-mode: t
   recentf-mode: t
   savehist-mode: t
   save-place-mode: t
   electric-pair-mode: t
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   eldoc-mode: t
   show-paren-mode: t
   electric-indent-mode: t
   mouse-wheel-mode: t
   tool-bar-mode: t
   menu-bar-mode: t
   file-name-shadow-mode: t
   global-font-lock-mode: t
   font-lock-mode: t
   blink-cursor-mode: t
   auto-composition-mode: t
   auto-encryption-mode: t
   auto-compression-mode: t
   column-number-mode: t
   line-number-mode: t
   indent-tabs-mode: t
   transient-mark-mode: t

Load-path shadows:
c:/Users/redacted/AppData/Roaming/.emacs.d/elpa/transient-20220918.2101/transient 
hides c:/msys64/mingw64/share/emacs/28.2/lisp/transient
c:/redacted/Emacs/prolog hides 
c:/msys64/mingw64/share/emacs/28.2/lisp/progmodes/prolog

Features:
(shadow sort mail-extr emacsbug message rmc puny rfc822 mml mml-sec epa
derived epg rfc6068 epg-config gnus-util rmail rmail-loaddefs mm-decode
mm-bodies mm-encode mail-parse rfc2231 mailabbrev gmm-utils mailheader
sendmail rfc2047 rfc2045 ietf-drums mm-util mail-prsvr mail-utils
face-remap comp comp-cstr warnings cl-extra thingatpt help-fns
radix-tree cl-print debug backtrace help-mode paredit
image-dimensions-minor-mode rainbow-delimiters finder-inf
org-noter-pdftools org-pdftools pdf-occur ibuf-ext ibuffer
ibuffer-loaddefs pdf-isearch let-alist pdf-annot tablist tablist-filter
semantic/wisent/comp semantic/wisent semantic/wisent/wisent
semantic/util-modes semantic/util semantic semantic/tag semantic/lex
semantic/fw mode-local cedet facemenu pdf-misc imenu pdf-tools compile
cus-edit cus-load pdf-view bookmark text-property-search pp jka-compr
pdf-cache pdf-info tq pdf-util image-mode dired dired-loaddefs exif
org-noter org-element avl-tree generator org-id org-refile org ob
ob-tangle ob-ref ob-lob ob-table ob-exp org-macro org-footnote org-src
ob-comint org-pcomplete pcomplete comint ansi-color ring org-list
org-faces org-entities noutline outline easy-mmode org-version
ob-emacs-lisp ob-core ob-eval org-table oc-basic bibtex iso8601
time-date ol rx org-keys oc org-compat advice org-macs org-loaddefs
format-spec find-func cal-menu calendar cal-loaddefs pdf-loader recentf
tree-widget wid-edit savehist saveplace edmacro kmacro elec-pair
slime-autoloads info package browse-url url url-proxy url-privacy
url-expand url-methods url-history url-cookie url-domsuf url-util
mailcap url-handlers url-parse auth-source cl-seq eieio eieio-core
cl-macs eieio-loaddefs password-cache json subr-x map url-vars seq
byte-opt gv bytecomp byte-compile cconv cl-loaddefs cl-lib iso-transl
tooltip eldoc paren electric uniquify ediff-hook vc-hooks
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term/w32-win w32-win w32-vars term/common-win tool-bar dnd fontset image
regexp-opt fringe tabulated-list replace newcomment text-mode lisp-mode
prog-mode register page tab-bar menu-bar rfn-eshadow isearch easymenu
timer select scroll-bar mouse jit-lock font-lock syntax font-core
term/tty-colors frame minibuffer cl-generic cham georgian utf-8-lang
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cp51932 hebrew greek romanian slovak czech european ethiopic indian
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epa-hook jka-cmpr-hook help simple abbrev obarray cl-preloaded nadvice
button loaddefs faces cus-face macroexp files window text-properties
overlay sha1 md5 base64 format env code-pages mule custom widget
hashtable-print-readable backquote threads w32notify w32 multi-tty
make-network-process native-compile emacs)

Memory information:
((conses 16 699091 31870)
  (symbols 48 27290 1)
  (strings 32 129618 5666)
  (string-bytes 1 3868314)
  (vectors 16 62928)
  (vector-slots 8 1171894 47516)
  (floats 8 199 58)
  (intervals 56 520 70)
  (buffers 992 19))

-- 
Wunderschön illustrierte Kinderbücher:
https://www.schoene-kinderbuecher.de
Weblog:
https://www.thomas-huehn.de





^ permalink raw reply	[flat|nested] 17+ messages in thread

* bug#58101: 28.2; image-size nonsensical
  2022-09-26 18:41 bug#58101: 28.2; image-size nonsensical Thomas Hühn
@ 2022-09-27  6:05 ` Eli Zaretskii
  2022-09-27  9:00   ` Thomas Hühn
  0 siblings, 1 reply; 17+ messages in thread
From: Eli Zaretskii @ 2022-09-27  6:05 UTC (permalink / raw)
  To: Thomas Hühn; +Cc: 58101

> Date: Mon, 26 Sep 2022 20:41:45 +0200
> From: Thomas Hühn <t@2uo.de>
> 
> * Download image https://imgs.xkcd.com/comics/two_key_system_2x.png to
>    disk
> 
> * Run (create-image "two_key_system_2x.png") --> (image :type png :file
>    "two_key_system_2x.png" :scale 1.2038461538461538 :transform-smoothing
>    t)
> 
> * Run (image-size (create-image "two_key_system_2x.png") :pixels) -->
>    (30 . 30)
> 
> Expected result: (1291 . 632)

I cannot reproduce this here.  I get the expected result.  I also get
this result from create-image:

 (image :type png :file "two_key_system_2x.png" :scale 1 :transform-smoothing t)


Is this in "emacs -Q"?  If so, what version of libpng do you have
installed there?  And what happens if you start Emacs like this:

  emacs -Q --eval "(setq w32-use-native-image-API t)"

Thanks.





^ permalink raw reply	[flat|nested] 17+ messages in thread

* bug#58101: 28.2; image-size nonsensical
  2022-09-27  6:05 ` Eli Zaretskii
@ 2022-09-27  9:00   ` Thomas Hühn
  2022-09-27  9:19     ` Eli Zaretskii
  0 siblings, 1 reply; 17+ messages in thread
From: Thomas Hühn @ 2022-09-27  9:00 UTC (permalink / raw)
  To: 58101; +Cc: Eli Zaretskii

Hi,

first of all, I think this bug could be merged with #52931, I found that 
only afterwards.

On 27.09.2022 08:05, Eli Zaretskii wrote:
>> Date: Mon, 26 Sep 2022 20:41:45 +0200
>> From: Thomas Hühn <t@2uo.de>
>>
>> * Download image https://imgs.xkcd.com/comics/two_key_system_2x.png to
>>     disk
>>
>> * Run (create-image "two_key_system_2x.png") --> (image :type png :file
>>     "two_key_system_2x.png" :scale 1.2038461538461538 :transform-smoothing
>>     t)
>>
>> * Run (image-size (create-image "two_key_system_2x.png") :pixels) -->
>>     (30 . 30)
>>
>> Expected result: (1291 . 632)
> 
> I cannot reproduce this here.  I get the expected result.  I also get

Now it seems like it's an intermittent problem.

Until yesterday (for several weaks where I've tried it every now and 
then) it resulted in what I wrote in this bug.

Then I found #52931 and tried Markus' lines.

In my opinion,

(image-size (create-image "two_key_system_2x.png") :pixels)

and

(let ((img (create-image "two_key_system_2x.png")))
   (image-size img t))

should give the same result, but it didn't! Markus' line gave 1554 . 
760, mine gave 30 . 30.

Later yesterday evening both gave 1554 . 760.

After some googling I found image-scaling-factor, and after setting that 
to 1, I always get the expected 1291 . 632 now.

(By the way, I think image-size should ignore that variable – I'm not 
displaying the image anywhere, so any display scaling shouldn't 
interfere – my use case would be inserting width and height attributes 
in HTML where I certainly want the original image dimensions)

> this result from create-image:
> 
>   (image :type png :file "two_key_system_2x.png" :scale 1 :transform-smoothing t)

With emacs -Q:

(image :type png :file "two_key_system_2x.png" :scale 1.2 
:transform-smoothing t)

That scaling factor is different now. I'll continue with emacs -Q from 
now on.

> Is this in "emacs -Q"?  If so, what version of libpng do you have

mingw64/mingw-w64-x86_64-libpng 1.6.38-1 [installed]

> installed there?  And what happens if you start Emacs like this:
> 
>    emacs -Q --eval "(setq w32-use-native-image-API t)"

(image-size (create-image "two_key_system_2x.png") :pixels)
--> (1549 . 758)

(let ((img (create-image "two_key_system_2x.png")))
   (image-size img t))
--> (1549 . 758)

Have a nice day!
Thomas
-- 
Wunderschön illustrierte Kinderbücher:
https://www.schoene-kinderbuecher.de
Weblog:
https://www.thomas-huehn.de





^ permalink raw reply	[flat|nested] 17+ messages in thread

* bug#58101: 28.2; image-size nonsensical
  2022-09-27  9:00   ` Thomas Hühn
@ 2022-09-27  9:19     ` Eli Zaretskii
  2022-09-27  9:21       ` Thomas Hühn
  0 siblings, 1 reply; 17+ messages in thread
From: Eli Zaretskii @ 2022-09-27  9:19 UTC (permalink / raw)
  To: Thomas Hühn; +Cc: 58101

> Date: Tue, 27 Sep 2022 11:00:22 +0200
> From: Thomas Hühn <t@2uo.de>
> Cc: Eli Zaretskii <eliz@gnu.org>
> 
> After some googling I found image-scaling-factor, and after setting that 
> to 1, I always get the expected 1291 . 632 now.

So the issue happens because image-scaling-factor is different from 1?
If so, this doesn't seem to be a bug, does it?





^ permalink raw reply	[flat|nested] 17+ messages in thread

* bug#58101: 28.2; image-size nonsensical
  2022-09-27  9:19     ` Eli Zaretskii
@ 2022-09-27  9:21       ` Thomas Hühn
  2022-09-27  9:39         ` Eli Zaretskii
  0 siblings, 1 reply; 17+ messages in thread
From: Thomas Hühn @ 2022-09-27  9:21 UTC (permalink / raw)
  To: Eli Zaretskii; +Cc: 58101

On 27.09.2022 11:19, Eli Zaretskii wrote:
>> Date: Tue, 27 Sep 2022 11:00:22 +0200
>> From: Thomas Hühn <t@2uo.de>
>> Cc: Eli Zaretskii <eliz@gnu.org>
>>
>> After some googling I found image-scaling-factor, and after setting that
>> to 1, I always get the expected 1291 . 632 now.
> 
> So the issue happens because image-scaling-factor is different from 1?
> If so, this doesn't seem to be a bug, does it?

I cannot reproduce the bug today, but the result until yesterday (as 
written in the bug report) was wrong, even taking image-scaling-factor 
into account (30 . 30).
-- 
Wunderschön illustrierte Kinderbücher:
https://www.schoene-kinderbuecher.de
Weblog:
https://www.thomas-huehn.de





^ permalink raw reply	[flat|nested] 17+ messages in thread

* bug#58101: 28.2; image-size nonsensical
  2022-09-27  9:21       ` Thomas Hühn
@ 2022-09-27  9:39         ` Eli Zaretskii
  2022-09-27 11:57           ` Lars Ingebrigtsen
  0 siblings, 1 reply; 17+ messages in thread
From: Eli Zaretskii @ 2022-09-27  9:39 UTC (permalink / raw)
  To: Thomas Hühn; +Cc: 58101

> Date: Tue, 27 Sep 2022 11:21:46 +0200
> Cc: 58101@debbugs.gnu.org
> From: Thomas Hühn <t@2uo.de>
> 
> On 27.09.2022 11:19, Eli Zaretskii wrote:
> >> Date: Tue, 27 Sep 2022 11:00:22 +0200
> >> From: Thomas Hühn <t@2uo.de>
> >> Cc: Eli Zaretskii <eliz@gnu.org>
> >>
> >> After some googling I found image-scaling-factor, and after setting that
> >> to 1, I always get the expected 1291 . 632 now.
> > 
> > So the issue happens because image-scaling-factor is different from 1?
> > If so, this doesn't seem to be a bug, does it?
> 
> I cannot reproduce the bug today, but the result until yesterday (as 
> written in the bug report) was wrong, even taking image-scaling-factor 
> into account (30 . 30).

Well, we need a reproducible recipe to investigate, I think.





^ permalink raw reply	[flat|nested] 17+ messages in thread

* bug#58101: 28.2; image-size nonsensical
  2022-09-27  9:39         ` Eli Zaretskii
@ 2022-09-27 11:57           ` Lars Ingebrigtsen
  2022-09-27 12:14             ` Eli Zaretskii
                               ` (2 more replies)
  0 siblings, 3 replies; 17+ messages in thread
From: Lars Ingebrigtsen @ 2022-09-27 11:57 UTC (permalink / raw)
  To: Eli Zaretskii; +Cc: Thomas Hühn, 58101

Eli Zaretskii <eliz@gnu.org> writes:

>> >> After some googling I found image-scaling-factor, and after setting that
>> >> to 1, I always get the expected 1291 . 632 now.
>> > 
>> > So the issue happens because image-scaling-factor is different from 1?
>> > If so, this doesn't seem to be a bug, does it?
>> 
>> I cannot reproduce the bug today, but the result until yesterday (as 
>> written in the bug report) was wrong, even taking image-scaling-factor 
>> into account (30 . 30).
>
> Well, we need a reproducible recipe to investigate, I think.

Can you try

(image-size (create-image "/tmp/two_key_system_2x.png" nil nil :scale 1.4) :pixels)

It rather sounds like `image-size' on Windows doesn't work when there's
scaling involved and then reports the size in character units instead.






^ permalink raw reply	[flat|nested] 17+ messages in thread

* bug#58101: 28.2; image-size nonsensical
  2022-09-27 11:57           ` Lars Ingebrigtsen
@ 2022-09-27 12:14             ` Eli Zaretskii
  2022-09-27 12:25             ` Thomas Hühn
  2022-09-27 14:28             ` Stefan Kangas
  2 siblings, 0 replies; 17+ messages in thread
From: Eli Zaretskii @ 2022-09-27 12:14 UTC (permalink / raw)
  To: Lars Ingebrigtsen; +Cc: t, 58101

> From: Lars Ingebrigtsen <larsi@gnus.org>
> Cc: Thomas Hühn <t@2uo.de>,  58101@debbugs.gnu.org
> Date: Tue, 27 Sep 2022 13:57:16 +0200
> 
> Can you try
> 
> (image-size (create-image "/tmp/two_key_system_2x.png" nil nil :scale 1.4) :pixels)

I get (1808 . 885).

> It rather sounds like `image-size' on Windows doesn't work when there's
> scaling involved and then reports the size in character units instead.

I don't see it here.





^ permalink raw reply	[flat|nested] 17+ messages in thread

* bug#58101: 28.2; image-size nonsensical
  2022-09-27 11:57           ` Lars Ingebrigtsen
  2022-09-27 12:14             ` Eli Zaretskii
@ 2022-09-27 12:25             ` Thomas Hühn
  2022-09-27 12:28               ` Lars Ingebrigtsen
  2022-09-27 14:28             ` Stefan Kangas
  2 siblings, 1 reply; 17+ messages in thread
From: Thomas Hühn @ 2022-09-27 12:25 UTC (permalink / raw)
  To: Lars Ingebrigtsen, Eli Zaretskii; +Cc: 58101

On 27.09.2022 13:57, Lars Ingebrigtsen wrote:
> Can you try
> 
> (image-size (create-image "/tmp/two_key_system_2x.png" nil nil :scale 1.4) :pixels)
> 
> It rather sounds like `image-size' on Windows doesn't work when there's
> scaling involved and then reports the size in character units instead.


With emacs -Q:

(image-size (create-image "two_key_system_2x.png") :pixels)

--> (1549 . 758)


(let ((img (create-image "two_key_system_2x.png")))
   (image-size img t))

--> (1549 . 758)

(image-size (create-image "/tmp/two_key_system_2x.png" nil nil :scale 
1.4) :pixels)

--> (1807 . 884)

Thanks!
Thomas
-- 
Wunderschön illustrierte Kinderbücher:
https://www.schoene-kinderbuecher.de
Weblog:
https://www.thomas-huehn.de





^ permalink raw reply	[flat|nested] 17+ messages in thread

* bug#58101: 28.2; image-size nonsensical
  2022-09-27 12:25             ` Thomas Hühn
@ 2022-09-27 12:28               ` Lars Ingebrigtsen
  2022-09-27 12:30                 ` Thomas Hühn
  0 siblings, 1 reply; 17+ messages in thread
From: Lars Ingebrigtsen @ 2022-09-27 12:28 UTC (permalink / raw)
  To: Thomas Hühn; +Cc: Eli Zaretskii, 58101

Thomas Hühn <t@2uo.de> writes:

> With emacs -Q:
>
> (image-size (create-image "two_key_system_2x.png") :pixels)
>
> --> (1549 . 758)

You previously said:

* Run (image-size (create-image "two_key_system_2x.png") :pixels) -->
  (30 . 30)

So has this bug gone away?  Or didn't you use "-Q" before?





^ permalink raw reply	[flat|nested] 17+ messages in thread

* bug#58101: 28.2; image-size nonsensical
  2022-09-27 12:28               ` Lars Ingebrigtsen
@ 2022-09-27 12:30                 ` Thomas Hühn
  2022-09-27 12:36                   ` Lars Ingebrigtsen
  0 siblings, 1 reply; 17+ messages in thread
From: Thomas Hühn @ 2022-09-27 12:30 UTC (permalink / raw)
  To: Lars Ingebrigtsen; +Cc: Eli Zaretskii, 58101

Yes, I couldn't reproduce my bug today at all. It occurred until yesterday (and several times in the weeks before that).

Is 30 . 30 a special value? It seems strange that Markus Triska got the same value on Mac years ago.

Thomas
-- 
Wunderschön illustrierte Kinderbücher:
https://www.schoene-kinderbuecher.de
Weblog:
https://www.thomas-huehn.de

> Am 27.09.2022 um 14:28 schrieb Lars Ingebrigtsen <larsi@gnus.org>:
> 
> Thomas Hühn <t@2uo.de> writes:
> 
>> With emacs -Q:
>> 
>> (image-size (create-image "two_key_system_2x.png") :pixels)
>> 
>> --> (1549 . 758)
> 
> You previously said:
> 
> * Run (image-size (create-image "two_key_system_2x.png") :pixels) -->
>  (30 . 30)
> 
> So has this bug gone away?  Or didn't you use "-Q" before?






^ permalink raw reply	[flat|nested] 17+ messages in thread

* bug#58101: 28.2; image-size nonsensical
  2022-09-27 12:30                 ` Thomas Hühn
@ 2022-09-27 12:36                   ` Lars Ingebrigtsen
  2022-09-27 12:50                     ` Thomas Hühn
  0 siblings, 1 reply; 17+ messages in thread
From: Lars Ingebrigtsen @ 2022-09-27 12:36 UTC (permalink / raw)
  To: Thomas Hühn; +Cc: Eli Zaretskii, 58101

Thomas Hühn <t@2uo.de> writes:

> Yes, I couldn't reproduce my bug today at all. It occurred until
> yesterday (and several times in the weeks before that).
>
> Is 30 . 30 a special value? It seems strange that Markus Triska got
> the same value on Mac years ago.

30x30 is the default size for images that can't be displayed.  For
instance, 

(image-size (create-image "/tmp/DOES-NOT-EXIST.png" nil nil :scale 1.0) t)
=> (30 . 30)

So I think perhaps you just didn't have the image in the current
directory when you did the create-image.





^ permalink raw reply	[flat|nested] 17+ messages in thread

* bug#58101: 28.2; image-size nonsensical
  2022-09-27 12:36                   ` Lars Ingebrigtsen
@ 2022-09-27 12:50                     ` Thomas Hühn
  2022-09-27 12:51                       ` Lars Ingebrigtsen
  0 siblings, 1 reply; 17+ messages in thread
From: Thomas Hühn @ 2022-09-27 12:50 UTC (permalink / raw)
  To: Lars Ingebrigtsen; +Cc: Eli Zaretskii, 58101


> 
> 30x30 is the default size for images that can't be displayed.  For
> instance, 
> 
> (image-size (create-image "/tmp/DOES-NOT-EXIST.png" nil nil :scale 1.0) t)
> => (30 . 30)
> 
> So I think perhaps you just didn't have the image in the current
> directory when you did the create-image.

Thanks!

Thomas





^ permalink raw reply	[flat|nested] 17+ messages in thread

* bug#58101: 28.2; image-size nonsensical
  2022-09-27 12:50                     ` Thomas Hühn
@ 2022-09-27 12:51                       ` Lars Ingebrigtsen
  0 siblings, 0 replies; 17+ messages in thread
From: Lars Ingebrigtsen @ 2022-09-27 12:51 UTC (permalink / raw)
  To: Thomas Hühn; +Cc: Eli Zaretskii, 58101

Thomas Hühn <t@2uo.de> writes:

>> 30x30 is the default size for images that can't be displayed.  For
>> instance, 
>> 
>> (image-size (create-image "/tmp/DOES-NOT-EXIST.png" nil nil :scale 1.0) t)
>> => (30 . 30)
>> 
>> So I think perhaps you just didn't have the image in the current
>> directory when you did the create-image.
>
> Thanks!

OK; I'm closing this bug report, then.





^ permalink raw reply	[flat|nested] 17+ messages in thread

* bug#58101: 28.2; image-size nonsensical
  2022-09-27 11:57           ` Lars Ingebrigtsen
  2022-09-27 12:14             ` Eli Zaretskii
  2022-09-27 12:25             ` Thomas Hühn
@ 2022-09-27 14:28             ` Stefan Kangas
  2022-09-27 15:41               ` Lars Ingebrigtsen
  2022-09-27 15:42               ` Eli Zaretskii
  2 siblings, 2 replies; 17+ messages in thread
From: Stefan Kangas @ 2022-09-27 14:28 UTC (permalink / raw)
  To: Lars Ingebrigtsen, Eli Zaretskii; +Cc: Thomas Hühn, 58101

Lars Ingebrigtsen <larsi@gnus.org> writes:

> (image-size (create-image "/tmp/two_key_system_2x.png" nil nil :scale 1.4) :pixels)

Hmm, that evaluates to "(30 . 30)" here, even though I don't even have a
file named "/tmp/two_key_system_2x.png".

Isn't that a bug?  I'd expect it to signal an error.





^ permalink raw reply	[flat|nested] 17+ messages in thread

* bug#58101: 28.2; image-size nonsensical
  2022-09-27 14:28             ` Stefan Kangas
@ 2022-09-27 15:41               ` Lars Ingebrigtsen
  2022-09-27 15:42               ` Eli Zaretskii
  1 sibling, 0 replies; 17+ messages in thread
From: Lars Ingebrigtsen @ 2022-09-27 15:41 UTC (permalink / raw)
  To: Stefan Kangas; +Cc: Thomas Hühn, Eli Zaretskii, 58101

Stefan Kangas <stefankangas@gmail.com> writes:

> Hmm, that evaluates to "(30 . 30)" here, even though I don't even have a
> file named "/tmp/two_key_system_2x.png".
>
> Isn't that a bug?  I'd expect it to signal an error.

It doesn't check whether the image exists until doing redisplay
normally (and then logs the problem in *Messages*)...  But `image-size'
could certainly signal an error in these cases, I guess.





^ permalink raw reply	[flat|nested] 17+ messages in thread

* bug#58101: 28.2; image-size nonsensical
  2022-09-27 14:28             ` Stefan Kangas
  2022-09-27 15:41               ` Lars Ingebrigtsen
@ 2022-09-27 15:42               ` Eli Zaretskii
  1 sibling, 0 replies; 17+ messages in thread
From: Eli Zaretskii @ 2022-09-27 15:42 UTC (permalink / raw)
  To: Stefan Kangas; +Cc: t, larsi, 58101

> From: Stefan Kangas <stefankangas@gmail.com>
> Date: Tue, 27 Sep 2022 10:28:44 -0400
> Cc: Thomas Hühn <t@2uo.de>, 58101@debbugs.gnu.org
> 
> Lars Ingebrigtsen <larsi@gnus.org> writes:
> 
> > (image-size (create-image "/tmp/two_key_system_2x.png" nil nil :scale 1.4) :pixels)
> 
> Hmm, that evaluates to "(30 . 30)" here, even though I don't even have a
> file named "/tmp/two_key_system_2x.png".
> 
> Isn't that a bug?  I'd expect it to signal an error.

No, that's the normal reaction in case of failure to create an image.
I think it will signal an error if you try to display it or something.





^ permalink raw reply	[flat|nested] 17+ messages in thread

end of thread, other threads:[~2022-09-27 15:42 UTC | newest]

Thread overview: 17+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2022-09-26 18:41 bug#58101: 28.2; image-size nonsensical Thomas Hühn
2022-09-27  6:05 ` Eli Zaretskii
2022-09-27  9:00   ` Thomas Hühn
2022-09-27  9:19     ` Eli Zaretskii
2022-09-27  9:21       ` Thomas Hühn
2022-09-27  9:39         ` Eli Zaretskii
2022-09-27 11:57           ` Lars Ingebrigtsen
2022-09-27 12:14             ` Eli Zaretskii
2022-09-27 12:25             ` Thomas Hühn
2022-09-27 12:28               ` Lars Ingebrigtsen
2022-09-27 12:30                 ` Thomas Hühn
2022-09-27 12:36                   ` Lars Ingebrigtsen
2022-09-27 12:50                     ` Thomas Hühn
2022-09-27 12:51                       ` Lars Ingebrigtsen
2022-09-27 14:28             ` Stefan Kangas
2022-09-27 15:41               ` Lars Ingebrigtsen
2022-09-27 15:42               ` Eli Zaretskii

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