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[Indic] Limit matras to 4 per syllable 

Also limit joiners.

This limits our syllable length to a constant, and is
closer to what Uniscribe does anyway.

Two Devanagari tests regressed, but who cares about tests with 20
joiners in a row?!  Devanagari at 57 (0.00821766%) now.
This commit is contained in:
Behdad Esfahbod 2012-07-24 02:30:38 -04:00
parent 330b329c89
commit dff0ece11d
1 changed files with 2 additions and 2 deletions
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4
src/hb-ot-shape-complex-indic-machine.rl
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@ -64,12 +64,12 @@ reph = (Ra H | Repha); # possible reph
cn = c.n?;
forced_rakar = ZWJ H ZWJ Ra;
matra_group = z*.M.N?.(H | forced_rakar)?;
matra_group = z{0,3}.M.N?.(H | forced_rakar)?;
syllable_tail = (SM.ZWNJ?)? (Coeng (cn|V))? (VD VD?)?;
place_holder = NBSP | DOTTEDCIRCLE;
halant_group = (z?.h.ZWJ?);
final_halant_group = halant_group | h.ZWNJ;
halant_or_matra_group = (final_halant_group | matra_group*);
halant_or_matra_group = (final_halant_group | matra_group{0,4});
consonant_syllable = Repha? (cn.halant_group){0,4} cn A? halant_or_matra_group? syllable_tail;