tree 4d07177e995d7e5f8eabbf69c60c8034698b418d
parent 9643d77086b1d0896cb4703f48b71743044880bf
author Garret Rieger <grieger@google.com> 1632500890 -0700
committer Garret Rieger <grieger@google.com> 1635877153 -0600

[subset] During LigatureSubstFormat1 subsetting always place Coverage last.

In Windows 7 on Chrome if the coverage table comes before any of the LigatureSet or Ligature subtables the font won't load. This changes the packing order to always place the Coverage table last. Virtual links are used to ensure the repacker maintains the desired ordering.

Coincidentally fontTools also does the same thing (https://github.com/fonttools/fonttools/blob/a3f988fbf621142d7d9b3e68a69725b88f358869/Lib/fontTools/ttLib/tables/otTables.py#L1137) to reduce overflows during packing.