Modifying an existing desktop file's MimeTypes

Jerome Leclanche adys.wh at
Mon Jan 13 01:41:28 PST 2014

I'd say anything that breaks the "one app per desktop file" idiom is a
bad idea. It breaks the entire declarative way behind desktop file and
can cause all sorts of problems; what you just mentioned is one
instance of it. Seeing duplicates in launchers, menus etc can be
another (nevermind NoDisplay).
J. Leclanche

On Mon, Jan 13, 2014 at 8:50 AM, Bastien Nocera <hadess at> wrote:
> On Sat, 2014-01-11 at 13:36 +0100, Albert Astals Cid wrote:
>> El Dissabte, 11 de gener de 2014, a les 02:28:18, Jerome Leclanche va
>> escriure:
>> > Consider the following use case:
>> >
>> > "gimp" supports image/png. "gimp-webp-plugin" makes gimp support image/webp.
>> >
>> > How would gimp-webp-plugin declare that it makes another app support
>> > additional mime types? I don't think it's possible currently.
>> > Suggestions?
>> In Okular we just install another .desktop with the same main keys (Name,
>> exec, type, etc) except it has a different mimetype and NoDisplay=true
>> That works fine under KDE but I've been told not so good under
>> gnome/glib/gtk/whatever does the .desktop parsing.
>> IMHO it's quite a clean an easy way to do it, but I do not have much in depth
>> knowledge of how this works/is supposed to work.
> It works fine under GNOME, but it will break some other functionality
> like "Default applications" because there's no way to back link to the
> original desktop file (the one without NoDisplay=true).
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