[autofit] Speed up computation of `af_reverse_character_map_new`. (4/4)
With this commit, the start-up time for creating the reverse character map
gets reduced from more than 300% to about 25% (as tested with `arial.ttf`
version 7.00).
* src/autofit/afadjust.c [FT_CONFIG_OPTION_USE_HARFBUZZ]: Include
`afgsub.h`.
(add_substitute): New auxiliary function to recursively add elements to
the reverse cmap.
(af_reverse_character_map_new): New code that replaces the old code
removed in the previous commit.
1 file changed
