fix pipewire-microphone

[allddd]

The --list-targets option was removed from pw-cat in ecff225b, which broke the script (#436).
In my opinion it's not really necessary, since it can be done with pactl.
Other changes mainly concern style/efficiency.

[x70b1]

Thanks for the update!
Why is a trailing underscore required in the function names?

[allddd]

@x70b1

Why is a trailing underscore required in the function names?

It's just a naming convention commonly used when writing shell/bash.
It helps distinguish internal functions from external functions/tools, but one could argue that it's hardly necessary in a 40-line script.

If you do not like it, I can remove it, it will not affect functionality.

[x70b1]

Its a bid odd at this place. I would also remove the vim config line.
Everything else is fine. I would pull it after these 2 small changes.

[x70b1]

Thanks!

[skjnldsv]

Why not pactl get-default-source ? :)