[Rachana] Add contextual chaining rule and glyph decomposition to suppress dotted circle before ാം and ാമത്തെHEADmaster

Add a 'ccmp' Glyph Decomposition lookup to map dotted circle to NULL (empty glyph)
Add a 'calt' Contextual Chaining Substitution lookup to apply 'ccmp' on pattern "(digit|hyphen)ാ(ം|മ)"
Test case: 1-ാം, 1-ാമത്തെ, 1ാം, 1ാമത്തെ

Signed-off-by: Rajeesh K Nambiar <rajeeshknambiar@gmail.com>

1 files changed, 126 insertions, 100 deletions

diff --git a/Rachana.sfd b/Rachana.sfd
index 2a19d64..2fa397d 100644
--- a/Rachana.sfd
+++ b/Rachana.sfd
@@ -21,7 +21,7 @@ OS2Version: 1
 OS2_WeightWidthSlopeOnly: 0
 OS2_UseTypoMetrics: 1
 CreationTime: 1201144321
-ModificationTime: 1416127763
+ModificationTime: 1417548800
 PfmFamily: 17
 TTFWeight: 400
 TTFWidth: 5
@@ -70,10 +70,35 @@ Lookup: 4 256 0 "'psts' Post Base Substitutions in Malay+AQEA-lam/Malay+AQEA-lam
 Lookup: 4 0 0 "'haln' Halant Forms in Malay+AQEA-lam lookup 7" { "'haln' Halant Forms in Malay+AQEA-lam lookup 7 subtable"  } ['haln' ('mlym' <'dflt' > ) ]
 Lookup: 4 0 0 "'pstf' Post Base Forms in Malay+AQEA-lam lookup 8" { "'pstf' Post Base Forms in Malay+AQEA-lam lookup 8 subtable"  } ['pstf' ('mlym' <'dflt' > ) ]
 Lookup: 4 0 0 "'pstf' Post Base Forms in Malay+AQEA-lam2 lookup 8" { "'pstf' Post Base Forms in Malay+AQEA-lam2 lookup 8 subtable"  } ['pstf' ('mlm2' <'dflt' > ) ]
+Lookup: 6 0 0 "'calt' Contextual Alternates lookup 9" { "'calt' Contextual Alternates lookup 9 subtable 1"  } ['calt' ('mlm2' <'dflt' > 'mlym' <'dflt' > ) ]
+Lookup: 2 0 0 "'ccmp' Glyph Composition/Decomposition lookup 10" { "'ccmp' Glyph Composition/Decomposition lookup 10 subtable 1"  } ['ccmp' ('mlm2' <'dflt' > 'mlym' <'dflt' > ) ]
 Lookup: 260 0 0 "'abvm' Above Base Mark in Malay+AQEA-lam/Malay+AQEA-lam2 lookup 0" { "'abvm' Above Base Mark in Malay+AQEA-lam/Malay+AQEA-lam2 lookup 0 subtable"  } ['abvm' ('mlm2' <'dflt' > 'mlym' <'dflt' > ) ]
 MarkAttachClasses: 2
 "nomark" 0 
 DEI: 91125
+ChainSub2: class "'calt' Contextual Alternates lookup 9 subtable 1" 5 5 5 1
+  Class: 56 hyphen zero one two three four five six seven eight nine
+  Class: 11 anusvara m1
+  Class: 2 a2
+  Class: 7 uni25CC
+  BClass: 56 hyphen zero one two three four five six seven eight nine
+  BClass: 11 anusvara m1
+  BClass: 2 a2
+  BClass: 7 uni25CC
+  FClass: 56 hyphen zero one two three four five six seven eight nine
+  FClass: 11 anusvara m1
+  FClass: 2 a2
+  FClass: 7 uni25CC
+ 1 1 2
+  ClsList: 4
+  BClsList: 1
+  FClsList: 3 2
+ 1
+  SeqLookup: 0 "'ccmp' Glyph Composition/Decomposition lookup 10"
+  ClassNames: "All_Others" "digits" "am_ma" "aa" "dotted_c"
+  BClassNames: "All_Others" "digits" "am_ma" "aa" "dotted_c"
+  FClassNames: "All_Others" "digits" "am_ma" "aa" "dotted_c"
+EndFPST
 TtTable: prep
 PUSHW_1
  511
@@ -771,7 +796,7 @@ NameList: Adobe Glyph List
 DisplaySize: -36
 AntiAlias: 1
 FitToEm: 1
-WinInfo: 408 34 12
+WinInfo: 714 34 12
 BeginPrivate: 0
 EndPrivate
 AnchorClass2: "dotreph" "'abvm' Above Base Mark in Malay+AQEA-lam/Malay+AQEA-lam2 lookup 0 subtable" 
@@ -8860,6 +8885,7 @@ SplineSet
  250 204 250 204 294 176 c 1,73,-1
 EndSplineSet
 Validated: 33
+MultipleSubs2: "'ccmp' Glyph Composition/Decomposition lookup 10 subtable 1" NULL
 EndChar
 
 StartChar: NULL
@@ -40824,24 +40850,24 @@ LayerCount: 2
 Back
 Fore
 SplineSet
-1576 -352 m 0
- 1576 -452 1576 -452 1522 -538 c 0
- 1468 -624 1468 -624 1370 -664 c 1
- 1328 -604 l 1
- 1462 -538 1462 -538 1462 -380 c 0
- 1462 -276 1462 -276 1402 -220 c 1
- 1344 -162 1344 -162 1262 -162 c 0
- 1176 -162 1176 -162 1116 -220 c 1
- 1054 -278 1054 -278 1054 -386 c 0
- 1054 -462 1054 -462 1092 -528 c 0
- 1128 -592 1128 -592 1202 -622 c 1
- 1176 -664 l 1
- 1086 -620 1086 -620 1036 -538 c 1
- 988 -456 988 -456 988 -364 c 0
- 988 -218 988 -218 1080 -132 c 1
- 1174 -46 1174 -46 1294 -46 c 0
- 1412 -46 1412 -46 1494 -124 c 1
- 1576 -204 1576 -204 1576 -352 c 0
+1576 -352 m 0,0,1
+ 1576 -452 1576 -452 1522 -538 c 0,2,3
+ 1468 -624 1468 -624 1370 -664 c 1,4,-1
+ 1328 -604 l 1,5,6
+ 1462 -538 1462 -538 1462 -380 c 0,7,8
+ 1462 -276 1462 -276 1402 -220 c 1,9,10
+ 1344 -162 1344 -162 1262 -162 c 0,11,12
+ 1176 -162 1176 -162 1116 -220 c 1,13,14
+ 1054 -278 1054 -278 1054 -386 c 0,15,16
+ 1054 -462 1054 -462 1092 -528 c 0,17,18
+ 1128 -592 1128 -592 1202 -622 c 1,19,-1
+ 1176 -664 l 1,20,21
+ 1086 -620 1086 -620 1036 -538 c 1,22,23
+ 988 -456 988 -456 988 -364 c 0,24,25
+ 988 -218 988 -218 1080 -132 c 1,26,27
+ 1174 -46 1174 -46 1294 -46 c 0,28,29
+ 1412 -46 1412 -46 1494 -124 c 1,30,31
+ 1576 -204 1576 -204 1576 -352 c 0,0,1
 EndSplineSet
 Refer: 188 3451 N 1 0 0 1 0 0 2
 LCarets2: 2 0 0 
@@ -40858,40 +40884,40 @@ LayerCount: 2
 Back
 Fore
 SplineSet
-1696 -830 m 0
- 1696 -918 1696 -918 1634 -978 c 1
- 1572 -1040 1572 -1040 1484 -1040 c 0
- 1396 -1040 1396 -1040 1334 -978 c 1
- 1270 -918 1270 -918 1270 -830 c 0
- 1270 -712 1270 -712 1372 -650 c 1
- 1340 -604 l 1
- 1474 -538 1474 -538 1474 -380 c 0
- 1474 -276 1474 -276 1414 -220 c 1
- 1356 -162 1356 -162 1274 -162 c 0
- 1188 -162 1188 -162 1128 -220 c 1
- 1066 -278 1066 -278 1066 -386 c 0
- 1066 -462 1066 -462 1104 -528 c 0
- 1140 -592 1140 -592 1214 -622 c 1
- 1188 -664 l 1
- 1098 -620 1098 -620 1048 -538 c 1
- 1000 -456 1000 -456 1000 -364 c 0
- 1000 -218 1000 -218 1092 -132 c 1
- 1186 -46 1186 -46 1306 -46 c 0
- 1424 -46 1424 -46 1506 -124 c 0
- 1590 -204 1590 -204 1590 -352 c 0
- 1590 -520 1590 -520 1464 -618 c 1
- 1484 -618 l 2
- 1572 -618 1572 -618 1634 -680 c 0
- 1696 -742 1696 -742 1696 -830 c 0
-1598 -806 m 0
- 1598 -758 1598 -758 1564 -722 c 0
- 1532 -688 1532 -688 1482 -688 c 0
- 1434 -688 1434 -688 1400 -722 c 1
- 1366 -758 1366 -758 1366 -806 c 0
- 1366 -856 1366 -856 1400 -890 c 0
- 1434 -924 1434 -924 1482 -924 c 0
- 1532 -924 1532 -924 1564 -890 c 1
- 1598 -856 1598 -856 1598 -806 c 0
+1696 -830 m 0,0,1
+ 1696 -918 1696 -918 1634 -978 c 1,2,3
+ 1572 -1040 1572 -1040 1484 -1040 c 0,4,5
+ 1396 -1040 1396 -1040 1334 -978 c 1,6,7
+ 1270 -918 1270 -918 1270 -830 c 0,8,9
+ 1270 -712 1270 -712 1372 -650 c 1,10,-1
+ 1340 -604 l 1,11,12
+ 1474 -538 1474 -538 1474 -380 c 0,13,14
+ 1474 -276 1474 -276 1414 -220 c 1,15,16
+ 1356 -162 1356 -162 1274 -162 c 0,17,18
+ 1188 -162 1188 -162 1128 -220 c 1,19,20
+ 1066 -278 1066 -278 1066 -386 c 0,21,22
+ 1066 -462 1066 -462 1104 -528 c 0,23,24
+ 1140 -592 1140 -592 1214 -622 c 1,25,-1
+ 1188 -664 l 1,26,27
+ 1098 -620 1098 -620 1048 -538 c 1,28,29
+ 1000 -456 1000 -456 1000 -364 c 0,30,31
+ 1000 -218 1000 -218 1092 -132 c 1,32,33
+ 1186 -46 1186 -46 1306 -46 c 0,34,35
+ 1424 -46 1424 -46 1506 -124 c 0,36,37
+ 1590 -204 1590 -204 1590 -352 c 0,38,39
+ 1590 -520 1590 -520 1464 -618 c 1,40,-1
+ 1484 -618 l 2,41,42
+ 1572 -618 1572 -618 1634 -680 c 0,43,44
+ 1696 -742 1696 -742 1696 -830 c 0,0,1
+1598 -806 m 0,45,46
+ 1598 -758 1598 -758 1564 -722 c 0,47,48
+ 1532 -688 1532 -688 1482 -688 c 0,49,50
+ 1434 -688 1434 -688 1400 -722 c 1,51,52
+ 1366 -758 1366 -758 1366 -806 c 0,53,54
+ 1366 -856 1366 -856 1400 -890 c 0,55,56
+ 1434 -924 1434 -924 1482 -924 c 0,57,58
+ 1532 -924 1532 -924 1564 -890 c 1,59,60
+ 1598 -856 1598 -856 1598 -806 c 0,45,46
 EndSplineSet
 Refer: 188 3451 N 1 0 0 1 0 0 2
 LCarets2: 1 0 
@@ -40907,52 +40933,52 @@ LayerCount: 2
 Back
 Fore
 SplineSet
-1784 -802 m 0
- 1784 -912 1784 -912 1706 -990 c 1
- 1626 -1068 1626 -1068 1516 -1068 c 0
- 1408 -1068 1408 -1068 1328 -990 c 1
- 1250 -912 1250 -912 1250 -802 c 0
- 1250 -678 1250 -678 1344 -598 c 1
- 1332 -584 l 1
- 1466 -522 1466 -522 1466 -360 c 0
- 1466 -256 1466 -256 1408 -198 c 1
- 1348 -142 1348 -142 1266 -142 c 0
- 1180 -142 1180 -142 1120 -200 c 1
- 1058 -258 1058 -258 1058 -364 c 0
- 1058 -442 1058 -442 1096 -506 c 1
- 1132 -572 1132 -572 1206 -602 c 1
- 1180 -644 l 1
- 1090 -600 1090 -600 1040 -518 c 1
- 992 -436 992 -436 992 -342 c 0
- 992 -194 992 -194 1084 -110 c 0
- 1178 -24 1178 -24 1298 -24 c 0
- 1416 -24 1416 -24 1498 -104 c 1
- 1582 -184 1582 -184 1582 -332 c 0
- 1582 -446 1582 -446 1516 -536 c 1
- 1626 -536 1626 -536 1706 -614 c 1
- 1784 -692 1784 -692 1784 -802 c 0
-1594 -696 m 0
- 1594 -636 1594 -636 1542 -612 c 0
- 1488 -588 1488 -588 1444 -618 c 1
- 1398 -644 1398 -644 1398 -696 c 0
- 1398 -738 1398 -738 1424 -764 c 0
- 1450 -790 1450 -790 1492 -790 c 0
- 1532 -790 1532 -790 1562 -762 c 1
- 1594 -736 1594 -736 1594 -696 c 0
-1708 -768 m 0
- 1708 -698 1708 -698 1658 -634 c 1
- 1672 -662 1672 -662 1672 -692 c 0
- 1672 -758 1672 -758 1624 -802 c 1
- 1578 -848 1578 -848 1512 -848 c 0
- 1446 -848 1446 -848 1400 -802 c 1
- 1354 -758 1354 -758 1354 -692 c 0
- 1354 -658 1354 -658 1366 -630 c 1
- 1358 -622 l 1
- 1294 -680 1294 -680 1294 -768 c 0
- 1294 -856 1294 -856 1354 -916 c 1
- 1414 -974 1414 -974 1500 -974 c 0
- 1588 -974 1588 -974 1648 -916 c 1
- 1708 -856 1708 -856 1708 -768 c 0
+1784 -802 m 0,0,1
+ 1784 -912 1784 -912 1706 -990 c 1,2,3
+ 1626 -1068 1626 -1068 1516 -1068 c 0,4,5
+ 1408 -1068 1408 -1068 1328 -990 c 1,6,7
+ 1250 -912 1250 -912 1250 -802 c 0,8,9
+ 1250 -678 1250 -678 1344 -598 c 1,10,-1
+ 1332 -584 l 1,11,12
+ 1466 -522 1466 -522 1466 -360 c 0,13,14
+ 1466 -256 1466 -256 1408 -198 c 1,15,16
+ 1348 -142 1348 -142 1266 -142 c 0,17,18
+ 1180 -142 1180 -142 1120 -200 c 1,19,20
+ 1058 -258 1058 -258 1058 -364 c 0,21,22
+ 1058 -442 1058 -442 1096 -506 c 1,23,24
+ 1132 -572 1132 -572 1206 -602 c 1,25,-1
+ 1180 -644 l 1,26,27
+ 1090 -600 1090 -600 1040 -518 c 1,28,29
+ 992 -436 992 -436 992 -342 c 0,30,31
+ 992 -194 992 -194 1084 -110 c 0,32,33
+ 1178 -24 1178 -24 1298 -24 c 0,34,35
+ 1416 -24 1416 -24 1498 -104 c 1,36,37
+ 1582 -184 1582 -184 1582 -332 c 0,38,39
+ 1582 -446 1582 -446 1516 -536 c 1,40,41
+ 1626 -536 1626 -536 1706 -614 c 1,42,43
+ 1784 -692 1784 -692 1784 -802 c 0,0,1
+1594 -696 m 0,44,45
+ 1594 -636 1594 -636 1542 -612 c 0,46,47
+ 1488 -588 1488 -588 1444 -618 c 1,48,49
+ 1398 -644 1398 -644 1398 -696 c 0,50,51
+ 1398 -738 1398 -738 1424 -764 c 0,52,53
+ 1450 -790 1450 -790 1492 -790 c 0,54,55
+ 1532 -790 1532 -790 1562 -762 c 1,56,57
+ 1594 -736 1594 -736 1594 -696 c 0,44,45
+1708 -768 m 0,58,59
+ 1708 -698 1708 -698 1658 -634 c 1,60,61
+ 1672 -662 1672 -662 1672 -692 c 0,62,63
+ 1672 -758 1672 -758 1624 -802 c 1,64,65
+ 1578 -848 1578 -848 1512 -848 c 0,66,67
+ 1446 -848 1446 -848 1400 -802 c 1,68,69
+ 1354 -758 1354 -758 1354 -692 c 0,70,71
+ 1354 -658 1354 -658 1366 -630 c 1,72,-1
+ 1358 -622 l 1,73,74
+ 1294 -680 1294 -680 1294 -768 c 0,75,76
+ 1294 -856 1294 -856 1354 -916 c 1,77,78
+ 1414 -974 1414 -974 1500 -974 c 0,79,80
+ 1588 -974 1588 -974 1648 -916 c 1,81,82
+ 1708 -856 1708 -856 1708 -768 c 0,58,59
 EndSplineSet
 Refer: 188 3451 N 1 0 0 1 0 0 2
 LCarets2: 1 0