minor, provide range specifications a la CHAR-CHAR

Signed-off-by: Sebastian Freundt <freundt@ga-group.nl>
fix, PEBKAC, actually survive unnamed classifier arguments, e.g. 'a-g'

Signed-off-by: Sebastian Freundt <freundt@ga-group.nl>
Merge branch 'tool/terms'

* tool/terms:
  fix, PEBKAC, actually survive unnamed classifier arguments, e.g. 'a-g'
  minor, provide range specifications a la CHAR-CHAR