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Prefer morx table if GSUB is empty (no scripts)

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Fixes https://github.com/harfbuzz/harfbuzz/issues/1348
This commit is contained in:
Behdad Esfahbod 2018-11-16 14:45:56 -08:00
parent aa06574823
commit eafd515639
1 changed files with 5 additions and 1 deletions
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6
src/hb-ot-shape.cc
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@ -62,7 +62,11 @@ _hb_apply_morx (hb_face_t *face)
hb_aat_layout_has_substitution (face))
return true;
return !hb_ot_layout_has_substitution (face) &&
/* Ignore empty GSUB tables. */
return (!hb_ot_layout_has_substitution (face) ||
!hb_ot_layout_table_get_script_tags (face,
HB_OT_TAG_GSUB,
0, nullptr, nullptr)) &&
hb_aat_layout_has_substitution (face);
}