splitfx: add --filter option to limit match to comments

This can allow filtering for tracks with a given comment
declared via the ".#{COMMENT}" mechanism or the track title.
If no prefix is given (before the '='), then all comment
values are matched.

1 files changed, 1 insertions, 0 deletions

diff --git a/bin/dtas-splitfx b/bin/dtas-splitfx
index 6ce6521..d0afc7b 100755
--- a/bin/dtas-splitfx
+++ b/bin/dtas-splitfx
@@ -13,6 +13,7 @@ OptionParser.new('', 24, '  ') do |op|
   op.on('-n', '--dry-run') { opts[:dryrun] = true }
   op.on('-j', '--jobs [JOBS]', Integer) { |val| opts[:jobs] = val } # nil==inf
   op.on('-s', '--quiet', '--silent') { opts[:silent] = true }
+  op.on('-f', '--filter FILTER') { |val| (opts[:filter] ||= []) << val }
   op.on('-D', '--no-dither') { opts[:no_dither] = true }
   op.on('-O', '--outdir OUTDIR') { |val| opts[:outdir] = val }
   op.on('-C', '--compression FACTOR') { |val| opts[:compression] = val }