[matplotlib-devel] Question about ft2font.get_charmap

[Nicolas G. <nic...@ga...>]

In module ft2font, the method FT2Font.get_charmap returns a dict that
maps glyph indices to char codes.

I don't understand the purpose of this mapping, and why the method
doesn't return the reverse mapping, i.e. char codes mapped to glyph
indices.

For example, in backend_ps.py, line 754, the charmap is immediately
reversed, just after being loaded:

        cmap = font.get_charmap()
        glyphd = reverse_dict(cmap)

Thanks,

Nicolas Grilly