[Indic] Hopefully minor!
Refactoring Indic machin. No semantic change.
diff --git a/src/hb-ot-shape-complex-indic-machine.rl b/src/hb-ot-shape-complex-indic-machine.rl
index 5f565b6..5609ff3 100644
--- a/src/hb-ot-shape-complex-indic-machine.rl
+++ b/src/hb-ot-shape-complex-indic-machine.rl
@@ -56,19 +56,21 @@
Repha = 15;
Ra = 16;
-c = C | Ra; # is_consonant
+c = (C | Ra); # is_consonant
n = (N.N? | ZWNJ?.RS); # is_consonant_modifier
z = ZWJ|ZWNJ; # is_joiner
h = H | Coeng; # is_halant_or_coeng
reph = (Ra H | Repha); # possible reph
+
+cn = c.n?;
matra_group = M.N?.H?;
-syllable_tail = SM? (Coeng (c|V))? (VD VD?)?;
+syllable_tail = SM? (Coeng (cn|V))? (VD VD?)?;
place_holder = NBSP | DOTTEDCIRCLE;
-consonant_syllable = Repha? (c.n? (h.z?|z.h))* c.n? A? (h.z? | matra_group*)? syllable_tail;
-vowel_syllable = reph? V.n? (z?.h.c | ZWJ.c)* matra_group* syllable_tail;
-standalone_cluster = reph? place_holder.n? (z? h c)* matra_group* syllable_tail;
+consonant_syllable = Repha? (cn (h.z?|z.h))* cn A? (h.z? | matra_group*)? syllable_tail;
+vowel_syllable = reph? V.n? (z?.h.cn | ZWJ.cn)* matra_group* syllable_tail;
+standalone_cluster = reph? place_holder.n? (z? h.cn)* matra_group* syllable_tail;
other = any;
main := |*
