[Fontconfig] Available glyphs?

[Dave Pawson]

Is there a utility based access (ideally from a linux cmd line app) to
query what
sequence of glyphs (perhaps by unicode code point) are available
within an otf or ttf font file please?

  I'm currently 'guessing' and although it's working mostly it falls
flat on it's face on occasion
for those fonts which are non-Western, or are ligatures etc.

TIA

-- 
Dave Pawson
XSLT XSL-FO FAQ.
Docbook FAQ.
http://www.dpawson.co.uk