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[GSUB] LigatureSubst >64k expansion #33

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behdad opened this issue Sep 19, 2021 · 1 comment
Closed

[GSUB] LigatureSubst >64k expansion #33

behdad opened this issue Sep 19, 2021 · 1 comment
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Implemented Implemented in HarfBuzz or doesn't need to Layout >64k expansion
Milestone
BE 2.0 ~= HB 5.0 ...

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@behdad
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behdad commented Sep 19, 2021 •
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The Coverage table part is covered in #30.

Add one new format:

struct LigatureSubstFormat2 {
  uint16 format; == 2
  Offset24To<Coverage> coverage;
  Array16Of<Offset24To<LigatureSet24>> ligatureSets;
};

struct LigatureSet24 {
  ArrayOf<OffsetTo<Ligature24>> ligatures;
};

struct Ligature24 {
  GlyphID24 ligatureGlyph;
  uint16 componentCount;
  GlyphID24 componentGlyphIDs[componentCount - 1];
};
@behdad behdad added this to the BE 2.0 ~= OT 2.0 milestone Sep 19, 2021
@behdad behdad mentioned this issue Sep 19, 2021
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@behdad behdad added the Layout label Sep 19, 2021
@behdad behdad changed the title [Layout/GSUB] LigatureSubst >64k expansion [GSUB] LigatureSubst >64k expansion Sep 19, 2021
behdad added a commit to fonttools/fonttools that referenced this issue Jul 4, 2022
@behdad
[>64k:layout:Ligature] Implement and add merger upgrade logic
9f1dfd6 
Implements harfbuzz/boring-expansion-spec#33
behdad added a commit to fonttools/fonttools that referenced this issue Jul 4, 2022
@behdad
[>64k:layout:Ligature] Implement and add merger upgrade logic
00fca48 
Implements harfbuzz/boring-expansion-spec#33
behdad added a commit to harfbuzz/harfbuzz that referenced this issue Jul 7, 2022
@behdad
[>64k:layout:LigatureSubst] Implement format 2
c5447f7 
Implements harfbuzz/boring-expansion-spec#33

Subset does NOT lower format.
behdad added a commit to harfbuzz/harfbuzz that referenced this issue Jul 7, 2022
@behdad
[>64k:layout:LigatureSubst] Implement format 2
727425a 
Implements harfbuzz/boring-expansion-spec#33

Subset does NOT lower format.
behdad added a commit to harfbuzz/harfbuzz that referenced this issue Jul 7, 2022
@behdad
[>64k:layout:LigatureSubst] Implement format 2
71a6d01 
Implements harfbuzz/boring-expansion-spec#33

Subset does NOT lower format.
behdad added a commit to harfbuzz/harfbuzz that referenced this issue Jul 7, 2022
@behdad
[>64k:layout:LigatureSubst] Implement format 2
8bc7f12 
Implements harfbuzz/boring-expansion-spec#33

Subset does NOT lower format.
behdad added a commit to harfbuzz/harfbuzz that referenced this issue Jul 8, 2022
@behdad
[>64k:layout:LigatureSubst] Implement format 2
a796f81 
Implements harfbuzz/boring-expansion-spec#33

Subset does NOT lower format.
behdad added a commit to harfbuzz/harfbuzz that referenced this issue Jul 8, 2022
@behdad
[>64k:layout:LigatureSubst] Implement format 2
399cebf 
Implements harfbuzz/boring-expansion-spec#33

Subset does NOT lower format.
behdad added a commit to fonttools/fonttools that referenced this issue Jul 8, 2022
@behdad
[>64k:layout:Ligature] Implement and add merger upgrade logic
07aa86c 
Implements harfbuzz/boring-expansion-spec#33
behdad added a commit to harfbuzz/harfbuzz that referenced this issue Jul 8, 2022
@behdad
[>64k:layout:LigatureSubst] Implement format 2
de76665 
Implements harfbuzz/boring-expansion-spec#33

Subset does NOT lower format.
behdad added a commit to harfbuzz/harfbuzz that referenced this issue Jul 11, 2022
@behdad
[>64k:layout:LigatureSubst] Implement format 2
e155f22 
Implements harfbuzz/boring-expansion-spec#33

Subset does NOT lower format.
behdad added a commit to harfbuzz/harfbuzz that referenced this issue Jul 12, 2022
@behdad
[>64k:layout:LigatureSubst] Implement format 2
104c421 
Implements harfbuzz/boring-expansion-spec#33

Subset does NOT lower format.
@behdad behdad added the Implemented Implemented in HarfBuzz or doesn't need to label Jul 12, 2022
behdad added a commit to harfbuzz/harfbuzz that referenced this issue Jul 12, 2022
@behdad
[>64k:layout:LigatureSubst] Implement format 2
ecd8bc5 
Implements harfbuzz/boring-expansion-spec#33

Subset does NOT lower format.
behdad added a commit to fonttools/fonttools that referenced this issue Jul 12, 2022
@behdad
[>64k:layout:Ligature] Implement and add merger upgrade logic
f9ba12b 
Implements harfbuzz/boring-expansion-spec#33
@behdad
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behdad commented Mar 6, 2023

Speced: https://github.com/harfbuzz/boring-expansion-spec/blob/main/beyond-64k.md
Implemented in HarfBuzz.

@behdad behdad closed this as completed Mar 6, 2023
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Implemented Implemented in HarfBuzz or doesn't need to Layout >64k expansion
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BE 2.0 ~= HB 5.0 ~= 2022 ~= OT 2.0
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