GUI: Choosing "Same file extension" results in "ERROR: Unknown option --match-with-extension."

[combs]

When I run rmlint --gui:

• If I choose "Path limitations": "Same file extension"
• The scan returns immediately with no results
• An underlying error is returned in the calling terminal:

ERROR: Unknown option --match-with-extension.

version 2.9.0 compiled: Apr 15 2021 at [21:03:37] "Odd Olm" (rev 2.3)
compiled with: +mounts +nonstripped +fiemap +sha512 +bigfiles +intl +replay +xattr +btrfs-support

rmlint was written by Christopher <sahib> Pahl and Daniel <SeeSpotRun> Thomas.
The code at https://github.com/sahib/rmlint is licensed under the terms of the GPLv3.

[combs]

I believe this may have been caused by 89dc901.

I'll try to get my environment set up to file a PR for the GUI.

[combs]

OK, #578 ought to patch this up.