D21379: [UDev Backend] Narrow device queried for

[Stefan Brüns]

bruns added a comment.


  In D21379#472418 <https://phabricator.kde.org/D21379#472418>, @broulik wrote:
  
  > For some reason here my `udev_enumerate_add_match_property("ID_MEDIA_PLAYER", null)` doesn't work. If I check for "1" it works but `null` doesn't find any devices. Since the systemd code uses `fnmatch`, we can probably just pass `*` to it to match anything.
  
  
  `nullptr` only matches when the udev property also has no value (`if (!value && !value_dev) return true;`). `"*"` should work, yes.
  
  The question now is, should we also differnentiate here, i.e. map `QVariant()` to `nullptr`, and  use `"*"` for wildcards?

REPOSITORY
  R245 Solid

REVISION DETAIL
  https://phabricator.kde.org/D21379

To: broulik, #frameworks, davidedmundson, bruns
Cc: apol, kde-frameworks-devel, michaelh, ngraham, bruns
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