Finding out what characters a given font supports

Question

How do I extract the list of supported Unicode characters from a TrueType or embedded OpenType font on Linux?

Is there a tool or a library I can use to process a .tt

Answer 1

The character code points for a ttf/otf font are stored in the CMAP table.

You can use ttx to generate a XML representation of the CMAP table. see here.

You can run the command ttx.exe -t cmap MyFont.ttf and it should output a file MyFont.ttx. Open it in a text editor and it should show you all the character code it found in the font.