Lintian tag information: desktop-entry-uses-reserved-category (type: warning)

Description (from lintian-explain-tags)

This desktop entry uses a Reserved Category as explained below, but does
not include an OnlyShowIn key.

Reserved categories like Screensaver, TrayIcon, Applet or Shell have a
desktop-specific meaning but have not been standardized yet. Desktop entry
files that use such a reserved category must also include an OnlyShowIn
key to limit the entry to environments that support the category.

The desktop-file-validate tool in the desktop-file-utils package may be
useful when checking the syntax of desktop entries.

Please refer to
https://specifications.freedesktop.org/menu-spec/latest/apas03.html for
details.

Visibility: warning
Show-Always: no
Check: menu-format

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