To see the current value of an option, pass a value of '?' to it, with or without a '='. Examples: $ pyftsubset --glyph-names? Current setting for 'glyph-names' is: False $ ./pyftsubset --name-IDs=? Current setting for 'name-IDs' is: [1, 2] $ ./pyftsubset --hinting? --no-hinting --hinting? Current setting for 'hinting' is: True Current setting for 'hinting' is: False Fixes https://github.com/behdad/fonttools/issues/142