Opentype Per-Table Support

[archaephyrryx]

(As #226 will be merged imminently, moving the check-list of tables to extend support to (and verify the proper support of) to a standalone issue)

Missing Tables in Extant Implementation

Implemented (not counting tables implemented before #226)

• prep
• gasp
• BASE
• GDEF
• GPOS
• GSUB
• `vhea'
• vmtx
• kern
• STAT
• fvar

Partly Implemented (but without API support or sanity-checking correctness)

• gvar

Deliberately Deferred

• CFF
• CFF2
• VORG

Low Priority

• SVG
• EBDT
• EBLC
• EBSC
• CBDT
• CBLC
• sbix
• JSTF
• MATH
• DSIG

Metrics (out of 659 fonts)

    239 CFF20: [MISSING IMPL]
    137 DSIG: [MISSING IMPL]
     86 FFTM: [MISSING IMPL]
     77 hdmx: [MISSING IMPL]
     72 VDMX: [MISSING IMPL]
     66 LTSH: [MISSING IMPL]
     29 PCLT: [MISSING IMPL]
     27 TSIa9: [MISSING IMPL]
     19 TSI0: [MISSING IMPL]
     19 gvar: [MISSING IMPL]
     18 TSI1: [MISSING IMPL]
     17 TTFA: [MISSING IMPL]
     15 SVG20: [MISSING IMPL]
     15 HVAR: [MISSING IMPL]
     15 EBLC: [MISSING IMPL]
     15 EBDT: [MISSING IMPL]
     13 VORG: [MISSING IMPL]
     10 TSI4: [MISSING IMPL]
     10 TSI2: [MISSING IMPL]
      9 TSI5: [MISSING IMPL]
      8 MVAR: [MISSING IMPL]
      8 meta: [MISSING IMPL]
      6 mort: [MISSING IMPL]
      6 CFF2: [MISSING IMPL]
      6 avar: [MISSING IMPL]
      5 Sill: [MISSING IMPL]
      5 Silf: [MISSING IMPL]
      5 Gloc: [MISSING IMPL]
      5 Glat: [MISSING IMPL]
      5 Feat: [MISSING IMPL]
      5 BDF20: [MISSING IMPL]
      4 JSTF: [MISSING IMPL]
      3 TSIV: [MISSING IMPL]
      3 MTfn: [MISSING IMPL]
      2 morx: [MISSING IMPL]
      2 MATH: [MISSING IMPL]
      2 feat: [MISSING IMPL]
      2 CBLC: [MISSING IMPL]
      2 CBDT: [MISSING IMPL]
      1 TSIS: [MISSING IMPL]
      1 TSIP: [MISSING IMPL]
      1 TSID: [MISSING IMPL]
      1 Silt: [MISSING IMPL]
      1 sbix: [MISSING IMPL]
      1 PfEd: [MISSING IMPL]
      1 MERG: [MISSING IMPL]
      1 cvar: [MISSING IMPL]
      1 CPAL: [MISSING IMPL]
      1 COLR: [MISSING IMPL]
      1 bloc: [MISSING IMPL]
      1 bdat: [MISSING IMPL]