[mc] Arch upgrade breaks some MC associations/actions

[Paul Marwick]

I'm running Midnight Commander under Arch linux, using the XFCE desktop 
environment. Mc is  currently version 4.8.30. A recent upgrade (I'm 
reasonably sure that it was something upgraded yesterday evening) has 
broken some associations in MC. They were working fine yesterday, but 
when I started the laptop this morning, they failed.

As an example, pressing enter with MC highlighting a .mp4 file would 
normally start Vlc. Now it does nothing at all. In the same way, MC 
would normally open a .tar.gz file, or a tar.zst file, neither of those 
get any response from MC. Attempting to open .docx or .odt file also 
fails completely. But MC is still opening .zip files, will still load 
.pdf files, will still open .png or .jpg files.

The update that I think must be responsible upgraded the following items:

alsa-card-profiles (1:0.3.78-1 -> 1:0.3.79-1)
aom (3.6.1-1 -> 3.7.0-1)
glib2 (2.76.4-1 -> 2.76.5-1)
freetype2 (2.13.1-1 -> 2.13.2-1)
openexr (3.1.11-1 -> 3.2.0-2)
gegl (0.4.46-1 -> 0.4.46-2)
libjxl (0.8.2-1 -> 0.8.2-2)
gimp (2.10.34-2 -> 2.10.34-3)
glib2-docs (2.76.4-1 -> 2.76.5-1)
gstreamer (1.22.5-1 -> 1.22.5-2)
gst-plugins-base-libs (1.22.5-1 -> 1.22.5-2)
gst-plugins-bad-libs (1.22.5-1 -> 1.22.5-2)
libpipewire (1:0.3.78-1 -> 1:0.3.79-1)
imagemagick (7.1.1.15-2 -> 7.1.1.15-3)
gst-plugins-bad (1.22.5-1 -> 1.22.5-2)
gst-plugins-base (1.22.5-1 -> 1.22.5-2)
gst-plugins-good (1.22.5-1 -> 1.22.5-2)
gst-plugins-ugly (1.22.5-1 -> 1.22.5-2)
pipewire (1:0.3.78-1 -> 1:0.3.79-1)
pipewire-audio (1:0.3.78-1 -> 1:0.3.79-1)
pipewire-alsa (1:0.3.78-1 -> 1:0.3.79-1)
pipewire-pulse (1:0.3.78-1 -> 1:0.3.79-1)
re2 (1:20230801-1 -> 1:20230901-1)

I'm not sure what to check to try and fix the problem. I'd be grateful 
for any suggestions - I use MC pretty well constantly and would hate to 
have its functionallity reduced...