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Describe how to (re)set default file opening application for snap on Linux #474

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Nov 4, 2023
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Describe how to (re)set default file opening application for snap on Linux #474

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749f17a
Describe how to (re)set default file opening application for snap
SECtim Oct 30, 2023
5a036f3
Fix typo, add some more details
SECtim Oct 31, 2023
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8 changes: 8 additions & 0 deletions en/installation.md
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Expand Up @@ -81,6 +81,14 @@ Depending on your use case and needed integrations it is advisable to choose the
| LyX | ❌ | ✅ | ✅ | ✅ |
| Vim/Emacs | ❌ | ❌ | ✅ | ✅ |

#### Change default application to open files for JabRef snap

When JabRef is installed as a snap, it initially asks which application should be used to open PDFs (or other files). However, after selecting the same application three times, that application is set as default and there is no obvious way to select another application ("Preferences" -> "External File Types" does not help here, because the snap sandbox does not "see" any of the user's applications).
This setting is stored in the XDG permission storage, and can be changed with a command like the following (see [this forum thread](https://forum.snapcraft.io/t/xdg-permissions-stores-should-be-configurable-with-snapd/25048) for further information, and have a look at `flatpack permissions` to find the correct "Table": look for a line where the "App" is `snap.jabref` - in the below example, the table is the default `desktop-used-apps`):
`flatpak permission-set --data "{'always-ask':<false>}" desktop-used-apps application/pdf snap.jabref okularApplication_pdf 0 3`
In this example, the default application to open PDF files is set to `okularApplication_pdf`, and the counter for when to stop asking how to open PDF files is set to 0/3.
If you want JabRef to ask you which application to use every time, use `'always-ask':<true>` in the `data` parameter.

#### Include JabRef in the start menu of Ubuntu

See [http://askubuntu.com/a/721387/196423](http://askubuntu.com/a/721387/196423) for details.
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