Khaled Hosny 4526e164f1 [feaLib] Check lookup index in chaining lookups
Raise if lookup_index is None, which would happen only of the lookup
referenced belongs to the wrong table. The error message needs to be less
cryptic, though.

Fixes https://github.com/fonttools/fonttools/issues/1896
2020-04-27 02:39:33 +02:00
..
2019-08-09 12:20:13 +01:00
2019-08-09 12:20:13 +01:00