shadowfacts/fonttools
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Fix OS/2.usMaxContext for reverse GSUB rules

Browse Source
This commit is contained in:
David Corbett 2024-06-16 18:43:13 -04:00 committed by Behdad Esfahbod
parent 4b030d2db8
commit aa390ec98b
2 changed files with 2 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
Lib/fontTools/otlLib/maxContextCalc.py
View File

@ -92,5 +92,5 @@ def maxCtxContextualRule(maxCtx, st, chain):
if not chain: if not chain:
return max(maxCtx, st.GlyphCount) return max(maxCtx, st.GlyphCount)
elif chain == "Reverse": elif chain == "Reverse":
return max(maxCtx, st.GlyphCount + st.LookAheadGlyphCount) return max(maxCtx, 1 + st.LookAheadGlyphCount)
return max(maxCtx, st.InputGlyphCount + st.LookAheadGlyphCount) return max(maxCtx, st.InputGlyphCount + st.LookAheadGlyphCount)

2
Tests/otlLib/maxContextCalc_test.py
View File

@ -39,8 +39,8 @@ def test_max_ctx_calc_features():
rsub a' by b; rsub a' by b;
rsub a b' by c; rsub a b' by c;
rsub a b' c by A; rsub a b' c by A;
rsub [a b] [a b c]' [a b] by B;
rsub [a b] c' by A; rsub [a b] c' by A;
rsub [a b] c' [a b] by B;
lookup GSUB_EXT; lookup GSUB_EXT;
} sub1; } sub1;