From: Lars Ingebrigtsen <larsi@gnus.org>
To: Stefan Monnier <monnier@iro.umontreal.ca>
Cc: Eli Zaretskii <eliz@gnu.org>,
emacs-devel@gnu.org, Juri Linkov <juri@linkov.net>
Subject: Re: Image-conversion shims
Date: Wed, 09 Oct 2019 21:26:04 +0200 [thread overview]
Message-ID: <87r23l67qr.fsf@gnus.org> (raw)
In-Reply-To: <jwvv9szxhej.fsf-monnier+emacs@gnu.org> (Stefan Monnier's message of "Tue, 08 Oct 2019 13:47:58 -0400")
Stefan Monnier <monnier@iro.umontreal.ca> writes:
> I still can't see why we should care about our ability to display an
> image before preferring image-mode over fundamental-mode.
It just feels odd to be mapping file extensions to a mode when we don't
know whether that mode can display the file meaningfully or not. We
don't do that with other file types, so why with images?
But in practice I guess it doesn't make much difference. It's more of a
cleanliness thing.
> IOW, I think the auto-mode-alist entries should be added statically not
> based on what we can do with them, but based on what the extension means
> in practice.
>
> Typically, there are various cases:
> - things like .svg and .xpm which can be meaningfully viewed as "an
> image" or as "a text file". There, we should make sure the user can
> switch between those two views (and default to text if we can't
> display the image, e.g. via image-mode-maybe).
> - extensions which are sometimes used for images and sometimes for
> completely unrelated purposes. We should decide based on
> which is most likely to the case.
Since we don't default to using the external converters for exotic image
formats, when the user has switched it on, that's a signal that the user
does want those to be mapped to images, perhaps, which is a practical
argument for having the mappings be dynamic.
> - extensions which are always images and can't meaningfully be edited
> within Emacs, so only image-mode makes sense.
In that case we should change image-mode to not display stuff like this
for formats it doesn't understand:
Type C-c C-c or C-c C-x to view the image as an image or hex.
Cannot display image: (Cannot determine image type)
--
(domestic pets only, the antidote for overdose, milk.)
bloggy blog: http://lars.ingebrigtsen.no
next prev parent reply other threads:[~2019-10-09 19:26 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-09-28 20:06 Image-conversion shims Lars Ingebrigtsen
2019-09-28 20:37 ` Clément Pit-Claudel
2019-09-28 21:20 ` Lars Ingebrigtsen
2019-09-29 6:24 ` Eli Zaretskii
2019-09-28 21:05 ` Stefan Monnier
2019-09-28 21:21 ` Lars Ingebrigtsen
2019-09-28 23:29 ` Lars Ingebrigtsen
2019-09-29 0:01 ` Lars Ingebrigtsen
2019-09-29 7:11 ` Eli Zaretskii
2019-09-29 11:44 ` Lars Ingebrigtsen
2019-09-29 11:56 ` Eli Zaretskii
2019-09-30 4:12 ` Lars Ingebrigtsen
2019-09-30 7:06 ` Eli Zaretskii
2019-09-30 13:42 ` Lars Ingebrigtsen
2019-09-30 14:01 ` Eli Zaretskii
2019-10-01 12:06 ` Lars Ingebrigtsen
2019-10-01 12:36 ` Eli Zaretskii
2019-09-30 17:27 ` Stefan Monnier
2019-10-01 12:08 ` Lars Ingebrigtsen
2019-10-01 13:09 ` Stefan Monnier
2019-10-06 20:58 ` Juri Linkov
2019-10-07 1:41 ` Lars Ingebrigtsen
2019-10-07 18:48 ` Juri Linkov
2019-10-08 16:06 ` Lars Ingebrigtsen
2019-10-08 17:47 ` Stefan Monnier
2019-10-09 19:26 ` Lars Ingebrigtsen [this message]
2019-10-09 19:53 ` Stefan Monnier
2019-10-14 4:53 ` Lars Ingebrigtsen
2019-10-14 19:27 ` Juri Linkov
2019-10-14 19:41 ` Lars Ingebrigtsen
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