That’s because of an “oops” in my scripts. I forgot that matching a file to a track will cause the scripts to be re-run.
In any event, these slightly revised scripts should take care of that:
Script 1 - Collect the information
$if($in($left(%_musicbrainz_tracknumber%,1),0123456789),
$noop(Normal numeric track number beginning with a digit)
$noop(Do nothing)
,
$noop(Vinyl track number beginning with a letter)
$noop(Increment the track count for this disc number and side)
$set(_counter,$upper($left(%_musicbrainz_tracknumber%,1))%discnumber%)
$if($get_a(%_counter%%tracknumber%),,
$noop(Only increment in not already processed)
$set_a(%_counter%,$add($if2($get_a(%_counter%),0),1))
$set_a(%_counter%%tracknumber%,1)
)
)
Script 2 - Apply the information
$if($in($left(%_musicbrainz_tracknumber%,1),0123456789),
$noop(Normal numeric track number beginning with a digit)
$noop(Do nothing)
,
$noop(Vinyl track number beginning with a letter)
$noop(Save the total track count for this disc number and side)
$set(_counter,$upper($left(%_musicbrainz_tracknumber%,1))%discnumber%)
$set(tracknumber,%_musicbrainz_tracknumber%/$get_a(%_counter%))
)
Sorry about so many iterations to get this working correctly.