diff --git a/Tests/varLib/data/master_ttx_interpolatable_otf/TestFamily2-Master0.ttx b/Tests/varLib/data/master_ttx_interpolatable_otf/TestFamily2-Master0.ttx
new file mode 100644
index 000000000..a6a8e003a
--- /dev/null
+++ b/Tests/varLib/data/master_ttx_interpolatable_otf/TestFamily2-Master0.ttx
@@ -0,0 +1,855 @@
+
+
+
+
+
+
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+
+
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+
+
+
+
+
+
+
+
+
+
+
+
+
+ Paul D. Hunt
+
+
+ Alternate a
+
+
+ Test Family 2
+
+
+ Regular
+
+
+ Version 2.020;ADBO;Test Family 2 Regular
+
+
+ Test Family 2
+
+
+ Version 2.020
+
+
+ TestFamily2-Master0
+
+
+ Paul D. Hunt
+
+
+ Master 0
+
+
+ Alternate a
+
+
+
+
+
+
+
+
+
+
+
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+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+ rmoveto
+ 18 0 14 14 0 18 rrcurveto
+ 0 18 -14 14 -18 0 rrcurveto
+ -18 0 -14 -14 0 -18 rrcurveto
+ 0 -18 14 -14 18 0 rrcurveto
+ return
+
+
+ rmoveto
+ 64 0 60 36 50 40 rrcurveto
+ 2 0 rlineto
+ 4 -64 rlineto
+ 26 0 rlineto
+ 0 310 rlineto
+ 0 96 -34 84 -112 0 rrcurveto
+ -78 0 -66 -40 -30 -22 rrcurveto
+ 16 -24 rlineto
+ 30 24 58 34 68 0 rrcurveto
+ 100 0 20 -86 -2 -78 rrcurveto
+ -216 -24 -98 -50 0 -107 rrcurveto
+ 0 -91 64 -38 74 0 rrcurveto
+ 2 28 rmoveto
+ -58 0 -50 28 0 74 rrcurveto
+ 0 82 72 48 210 24 rrcurveto
+ 0 -174 rlineto
+ -64 -54 -52 -28 -58 0 rrcurveto
+ endchar
+
+
+ -40 22 -58 0 rrcurveto
+ -116 0 -98 -98 0 -154 rrcurveto
+ 0 -162 78 -88 120 0 rrcurveto
+ 2 28 rmoveto
+ -108 0 -60 90 0 132 rrcurveto
+ 0 124 78 100 102 0 rrcurveto
+ 50 0 44 -18 54 -48 rrcurveto
+ 0 -296 rlineto
+ -54 -54 -50 -30 -56 0 rrcurveto
+ endchar
+
+
+ 0 rlineto
+ 0 114 rlineto
+ 0 72 24 42 54 0 rrcurveto
+ 18 0 20 -4 20 -10 rrcurveto
+ 10 26 rlineto
+ -22 10 -24 6 -20 0 rrcurveto
+ -68 0 -42 -44 0 -94 rrcurveto
+ 0 -118 rlineto
+ -66 -4 rlineto
+ 0 -24 rlineto
+ 66 0 rlineto
+ 0 -450 rlineto
+ 30 0 rlineto
+ 0 450 rlineto
+ return
+
+
+ 580 rmoveto
+ 63 0 16 66 4 56 rrcurveto
+ -26 2 rlineto
+ -2 -52 -16 -46 -37 0 rrcurveto
+ -59 0 -20 100 -76 0 rrcurveto
+ -64 0 -16 -65 -4 -57 rrcurveto
+ 26 -2 rlineto
+ 2 54 16 44 38 0 rrcurveto
+ 58 0 20 -100 77 0 rrcurveto
+ return
+
+
+ -10 26 rlineto
+ -18 -8 -26 -8 -18 0 rrcurveto
+ -70 0 -14 44 0 62 rrcurveto
+ 0 328 rlineto
+ 142 0 rlineto
+ 0 28 rlineto
+ -142 0 rlineto
+ 0 140 rlineto
+ -26 0 rlineto
+ -4 -140 rlineto
+ return
+
+
+ 540 252 -12 rmoveto
+ 66 0 54 36 40 40 rrcurveto
+ 2 0 rlineto
+ 4 -64 rlineto
+ 26 0 rlineto
+ 0 return
+
+
+ 0 21 rrcurveto
+ 0 20 -13 11 -18 0 rrcurveto
+ -16 0 -13 -11 0 -20 rrcurveto
+ 0 -21 13 return
+
+
+
+
+
+ 624 96 0 rmoveto
+ 432 0 rlineto
+ 0 660 rlineto
+ -432 0 rlineto
+ 214 -294 rmoveto
+ -56 92 rlineto
+ -94 168 rlineto
+ 302 0 rlineto
+ -94 -168 rlineto
+ -54 -92 rlineto
+ -180 -292 rmoveto
+ 0 536 rlineto
+ 154 -270 rlineto
+ 200 -266 rmoveto
+ -152 266 rlineto
+ 152 270 rlineto
+ -344 -578 rmoveto
+ 102 176 rlineto
+ 64 106 rlineto
+ 4 0 rlineto
+ 62 -106 rlineto
+ 100 -176 rlineto
+ endchar
+
+
+ 520 476 0 rmoveto
+ 34 0 rlineto
+ -236 660 rlineto
+ -28 0 rlineto
+ -236 -660 rlineto
+ 32 0 rlineto
+ 83 236 rlineto
+ 269 0 rlineto
+ -212 160 rmoveto
+ 28 80 24 68 24 82 rrcurveto
+ 4 0 rlineto
+ 24 -82 24 -68 28 -80 rrcurveto
+ 46 -132 rlineto
+ -249 0 rlineto
+ endchar
+
+
+ 444 400 0 rmoveto
+ 34 0 rlineto
+ -198 510 rlineto
+ -29 0 rlineto
+ -197 -510 rlineto
+ 32 0 rlineto
+ 67 176 rlineto
+ 225 0 rlineto
+ -176 128 rmoveto
+ 23 62 18 48 21 61 rrcurveto
+ 4 0 rlineto
+ 21 -60 18 -48 23 -63 rrcurveto
+ 38 -100 rlineto
+ -204 0 rlineto
+ endchar
+
+
+ 486 198 -12 -106 callsubr
+
+
+ -101 callsubr
+ 478 rlineto
+ -28 0 rlineto
+ -2 -46 rlineto
+ -2 0 rlineto
+ -46 36 -105 callsubr
+
+
+ 562 550 16 rmoveto
+ -39 15 -44 27 -47 39 rrcurveto
+ 53 67 39 86 26 92 rrcurveto
+ -30 0 rlineto
+ -24 -88 -35 -77 -50 -62 rrcurveto
+ -70 64 -72 88 -47 90 rrcurveto
+ 76 58 78 57 0 84 rrcurveto
+ 0 66 -36 50 -68 0 rrcurveto
+ -76 0 -54 -60 0 -84 rrcurveto
+ 0 -52 17 -57 28 -57 rrcurveto
+ -70 -53 -67 -58 0 -85 rrcurveto
+ 0 -110 86 -68 100 0 rrcurveto
+ 73 0 56 35 48 51 rrcurveto
+ 51 -43 46 -28 40 -15 rrcurveto
+ -378 542 rmoveto
+ 0 62 36 52 62 0 rrcurveto
+ 56 0 20 -46 0 -44 rrcurveto
+ 0 -72 -66 -50 -69 -52 rrcurveto
+ -24 52 -15 51 0 47 rrcurveto
+ -90 -362 rmoveto
+ 0 71 54 51 63 49 rrcurveto
+ 48 -91 73 -88 72 -67 rrcurveto
+ -43 -45 -53 -32 -58 0 rrcurveto
+ -84 0 -72 60 0 92 rrcurveto
+ endchar
+
+
+ 486 319 -103 callsubr
+ -121 -592 -106 callsubr
+
+
+ -101 callsubr
+ 722 rlineto
+ -30 0 rlineto
+ 0 -202 rlineto
+ 2 -90 rlineto
+ -50 38 -105 callsubr
+
+
+ 252 244 450 rmoveto
+ 0 28 rlineto
+ -114 -104 callsubr
+ endchar
+
+
+ 518 508 6 rmoveto
+ -102 callsubr
+ -192 -104 callsubr
+ 192 0 rlineto
+ 0 -324 rlineto
+ 0 -82 24 -56 88 0 rrcurveto
+ 16 0 30 8 28 10 rrcurveto
+ endchar
+
+
+ 526 96 0 rmoveto
+ 30 0 rlineto
+ 0 366 rlineto
+ 62 64 44 32 60 0 rrcurveto
+ 82 0 34 -52 0 -106 rrcurveto
+ 0 -304 rlineto
+ 30 0 rlineto
+ 0 308 rlineto
+ 0 124 -46 58 -98 0 rrcurveto
+ -66 0 -50 -38 -50 -50 rrcurveto
+ -2 0 rlineto
+ -4 76 rlineto
+ -26 0 rlineto
+ endchar
+
+
+ 200 endchar
+
+
+ 302 218 -12 rmoveto
+ 16 0 30 8 28 10 rrcurveto
+ -102 callsubr
+ -76 -4 rlineto
+ 0 -24 rlineto
+ 76 0 rlineto
+ 0 -324 rlineto
+ 0 -82 24 -56 88 0 rrcurveto
+ endchar
+
+
+ 0 77 -103 callsubr
+ endchar
+
+
+ 0 -86 602 -107 callsubr
+ 172 0 -107 callsubr
+ endchar
+
+
+ 0 -86 -188 -107 callsubr
+ 172 0 -107 callsubr
+ endchar
+
+
+ 0 77 -220 rmoveto
+ 63 0 16 66 4 56 rrcurveto
+ -26 2 rlineto
+ -2 -52 -16 -46 -37 0 rrcurveto
+ -59 0 -20 100 -76 0 rrcurveto
+ -64 0 -16 -65 -4 -57 rrcurveto
+ 26 -2 rlineto
+ 2 54 16 44 38 0 rrcurveto
+ 58 0 20 -100 77 0 rrcurveto
+ endchar
+
+
+ 592 295 426 rmoveto
+ 18 0 13 12 0 20 rrcurveto
+ 0 20 -13 12 -18 0 rrcurveto
+ -16 0 -13 -12 0 -20 rrcurveto
+ 0 -20 13 -12 16 0 rrcurveto
+ -106 -26 rmoveto
+ 18 0 12 12 0 19 rrcurveto
+ 0 22 -13 10 -17 0 rrcurveto
+ -16 0 -13 -10 0 -22 rrcurveto
+ 0 -19 13 -12 16 0 rrcurveto
+ 212 -1 rmoveto
+ 19 0 11 13 0 19 rrcurveto
+ 0 21 -13 10 -17 0 rrcurveto
+ -15 0 -13 -10 0 -21 rrcurveto
+ 0 -19 13 -13 15 0 rrcurveto
+ -291 -81 rmoveto
+ 19 0 12 12 -100 callsubr
+ -12 16 0 rrcurveto
+ 370 -1 rmoveto
+ 19 0 11 12 0 20 rrcurveto
+ 0 20 -13 11 -17 0 rrcurveto
+ -15 0 -14 -11 0 -20 rrcurveto
+ 0 -20 14 -12 15 0 rrcurveto
+ -398 -110 rmoveto
+ 19 0 13 12 0 20 rrcurveto
+ 0 21 -13 10 -19 0 rrcurveto
+ -15 0 -13 -10 0 -21 rrcurveto
+ 0 -20 13 -12 15 0 rrcurveto
+ 426 0 rmoveto
+ 18 0 12 12 0 20 rrcurveto
+ 0 21 -15 10 -15 0 rrcurveto
+ -17 0 -13 -10 0 -21 rrcurveto
+ 0 -20 13 -12 17 0 rrcurveto
+ -398 -110 rmoveto
+ 19 0 12 13 0 19 rrcurveto
+ 0 21 -13 11 -18 0 rrcurveto
+ -16 0 -13 -11 0 -21 rrcurveto
+ 0 -19 13 -13 16 0 rrcurveto
+ 370 0 rmoveto
+ 19 0 11 13 0 19 rrcurveto
+ 0 21 -13 11 -17 0 rrcurveto
+ -15 0 -14 -11 0 -21 rrcurveto
+ 0 -19 14 -13 15 0 rrcurveto
+ -291 -82 rmoveto
+ 18 0 12 12 0 22 rrcurveto
+ 0 19 -13 10 -17 0 rrcurveto
+ -16 0 -13 -10 0 -19 rrcurveto
+ 0 -22 13 -12 16 0 rrcurveto
+ 212 0 rmoveto
+ 19 0 11 12 0 22 rrcurveto
+ 0 19 -13 10 -17 0 rrcurveto
+ -15 0 -13 -10 0 -19 rrcurveto
+ 0 -22 13 -12 15 0 rrcurveto
+ -106 -27 rmoveto
+ 18 0 13 11 -100 callsubr
+ -11 16 0 rrcurveto
+ endchar
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
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+
+
+
+
+
+
+
+
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+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
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+
+
+
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+
+
+
+
+
+
+
+
+
+
diff --git a/Tests/varLib/data/master_ttx_interpolatable_otf/TestFamily2-Master1.ttx b/Tests/varLib/data/master_ttx_interpolatable_otf/TestFamily2-Master1.ttx
new file mode 100644
index 000000000..b7ca3a9da
--- /dev/null
+++ b/Tests/varLib/data/master_ttx_interpolatable_otf/TestFamily2-Master1.ttx
@@ -0,0 +1,693 @@
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+ Paul D. Hunt
+
+
+ Test Family 2
+
+
+ Regular
+
+
+ Version 2.020;ADBO;Test Family 2 Regular
+
+
+ Test Family 2
+
+
+ Version 2.020
+
+
+ TestFamily2-Master1
+
+
+ Paul D. Hunt
+
+
+ Master 1
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+ rmoveto
+ 47 0 33 35 0 45 rrcurveto
+ 0 45 -33 35 -47 0 rrcurveto
+ -47 0 -33 -35 0 -45 rrcurveto
+ 0 -45 33 -35 47 0 rrcurveto
+ return
+
+
+ rmoveto
+ 54 0 44 24 40 36 rrcurveto
+ 4 0 rlineto
+ 12 -48 rlineto
+ 140 0 rlineto
+ 0 278 rlineto
+ 0 164 -78 70 -130 0 rrcurveto
+ -78 0 -72 -24 -70 -42 rrcurveto
+ 60 -112 rlineto
+ 52 28 38 14 36 0 rrcurveto
+ 44 0 22 -16 4 -36 rrcurveto
+ -192 -20 -80 -58 0 -104 rrcurveto
+ 0 -82 56 -72 94 0 rrcurveto
+ 60 132 rmoveto
+ -30 0 -16 13 0 23 rrcurveto
+ 0 28 26 26 82 12 rrcurveto
+ 0 -68 rlineto
+ -18 -20 -16 -14 -28 0 rrcurveto
+ endchar
+
+
+ 0 rlineto
+ 0 12 rlineto
+ 0 47 20 15 32 0 rrcurveto
+ 16 0 18 -4 16 -6 rrcurveto
+ 30 126 rlineto
+ -22 8 -38 10 -46 0 rrcurveto
+ -148 0 -50 -95 0 -107 rrcurveto
+ 0 -7 rlineto
+ -66 -5 rlineto
+ 0 -128 rlineto
+ 66 0 rlineto
+ 0 -366 rlineto
+ 172 0 rlineto
+ 0 366 rlineto
+ return
+
+
+ -98 0 -164 rrcurveto
+ 0 -162 80 -100 124 0 rrcurveto
+ 46 140 rmoveto
+ -46 0 -28 34 0 90 rrcurveto
+ 0 88 34 32 36 0 rrcurveto
+ 22 0 26 -6 20 -18 rrcurveto
+ 0 -184 rlineto
+ -18 -28 -20 -8 -26 0 rrcurveto
+ endchar
+
+
+ -26 124 rlineto
+ -12 -4 -16 -4 -16 0 rrcurveto
+ -32 0 -28 18 0 55 rrcurveto
+ 0 171 rlineto
+ 114 0 rlineto
+ 0 134 rlineto
+ -114 0 rlineto
+ 0 130 rlineto
+ -142 0 rlineto
+ -20 -130 rlineto
+ return
+
+
+ 113 rrcurveto
+ -106 6 rlineto
+ -4 -36 -10 -10 -16 0 rrcurveto
+ -26 0 -38 56 -60 0 rrcurveto
+ -80 0 -50 -45 -2 -113 rrcurveto
+ 106 -6 rlineto
+ 4 36 10 10 16 0 rrcurveto
+ 26 0 38 -56 60 0 rrcurveto
+ return
+
+
+ 580 240 -12 rmoveto
+ 44 0 48 24 34 34 rrcurveto
+ 4 0 rlineto
+ 12 -46 rlineto
+ 140 0 rlineto
+ 0 return
+
+
+ 0 rrcurveto
+ -23 0 -21 -16 0 -28 rrcurveto
+ 0 -30 21 -17 23 0 rrcurveto
+ return
+
+
+ rrcurveto
+ 0 28 -19 16 -26 0 rrcurveto
+ -23 0 -20 -16 0 -28 rrcurveto
+ 0 return
+
+
+ 0 rlineto
+ 0 -174 rlineto
+ 0 -122 54 -82 130 0 rrcurveto
+ return
+
+
+ rmoveto
+ 26 0 19 17 0 30 rrcurveto
+ 0 28 -21 16 -24 0 rrcurveto
+ return
+
+
+
+
+
+ 704 76 0 rmoveto
+ 552 0 rlineto
+ 0 660 rlineto
+ -552 0 rlineto
+ 274 -236 rmoveto
+ -40 96 rlineto
+ -18 36 rlineto
+ 120 0 rlineto
+ -18 -36 rlineto
+ -40 -96 rlineto
+ -166 -252 rmoveto
+ 0 336 rlineto
+ 82 -168 rlineto
+ 246 -168 rmoveto
+ -82 168 rlineto
+ 82 168 rlineto
+ -228 -404 rmoveto
+ 26 56 rlineto
+ 36 96 rlineto
+ 4 0 rlineto
+ 36 -96 rlineto
+ 26 -56 rlineto
+ endchar
+
+
+ 584 412 0 rmoveto
+ 182 0 rlineto
+ -198 650 rlineto
+ -208 0 rlineto
+ -198 -650 rlineto
+ 176 0 rlineto
+ 32 138 rlineto
+ 182 0 rlineto
+ -140 178 rmoveto
+ 16 62 16 78 14 66 rrcurveto
+ 4 0 rlineto
+ 16 -65 16 -79 16 -62 rrcurveto
+ 11 -45 rlineto
+ -120 0 rlineto
+ endchar
+
+
+ 516 346 0 rmoveto
+ 180 0 rlineto
+ -165 532 rlineto
+ -206 0 rlineto
+ -165 -532 rlineto
+ 174 0 rlineto
+ 21 94 rlineto
+ 140 0 rlineto
+ -106 150 rmoveto
+ 11 48 11 66 11 51 rrcurveto
+ 4 0 rlineto
+ 13 -50 11 -67 11 -48 rrcurveto
+ 6 -28 rlineto
+ -84 0 rlineto
+ endchar
+
+
+ 536 188 -12 -106 callsubr
+
+
+ -101 callsubr
+ 500 rlineto
+ -134 0 rlineto
+ -14 -50 rlineto
+ -4 0 rlineto
+ -38 44 -40 18 -48 0 rrcurveto
+ -102 0 -106 -104 callsubr
+
+
+ 690 670 126 rmoveto
+ -31 4 -38 12 -39 19 rrcurveto
+ 49 66 34 71 23 76 rrcurveto
+ -156 0 rlineto
+ -15 -56 -25 -48 -30 -40 rrcurveto
+ -41 29 -40 33 -33 35 rrcurveto
+ 66 43 64 53 0 85 rrcurveto
+ 0 94 -68 60 -104 0 rrcurveto
+ -116 0 -72 -82 0 -94 rrcurveto
+ 0 -39 14 -45 25 -45 rrcurveto
+ -62 -38 -53 -52 0 -91 rrcurveto
+ 0 -98 73 -90 151 0 rrcurveto
+ 83 0 70 24 57 39 rrcurveto
+ 58 -31 59 -22 57 -10 rrcurveto
+ -391 498 rmoveto
+ 0 42 24 22 27 0 rrcurveto
+ 25 0 13 -14 0 -28 rrcurveto
+ 0 -38 -30 -25 -41 -24 rrcurveto
+ -12 23 -6 22 0 20 rrcurveto
+ -55 -300 rmoveto
+ 0 23 12 19 18 19 rrcurveto
+ 34 -40 40 -38 44 -35 rrcurveto
+ -22 -10 -21 -6 -21 0 rrcurveto
+ -52 0 -32 28 0 40 rrcurveto
+ endchar
+
+
+ 536 330 572 rmoveto
+ 80 0 50 45 2 -102 callsubr
+ -142 -584 -106 callsubr
+
+
+ -101 callsubr
+ 696 rlineto
+ -172 0 rlineto
+ 0 -162 rlineto
+ 6 -72 rlineto
+ -30 30 -32 20 -54 0 rrcurveto
+ -102 0 -102 -104 callsubr
+
+
+ 360 344 366 rmoveto
+ 0 134 rlineto
+ -84 -105 callsubr
+ endchar
+
+
+ 724 706 6 rmoveto
+ -103 callsubr
+ -154 -105 callsubr
+ 144 -98 callsubr
+ 55 0 37 10 26 8 rrcurveto
+ endchar
+
+
+ 582 58 0 rmoveto
+ 172 0 rlineto
+ 0 328 rlineto
+ 26 24 18 14 32 0 rrcurveto
+ 34 0 16 -16 0 -64 rrcurveto
+ 0 -286 rlineto
+ 172 0 rlineto
+ 0 308 rlineto
+ 0 124 -46 80 -110 0 rrcurveto
+ -68 0 -50 -34 -40 -38 rrcurveto
+ -4 0 rlineto
+ -12 60 rlineto
+ -140 0 rlineto
+ endchar
+
+
+ 200 endchar
+
+
+ 400 264 -12 rmoveto
+ 55 0 37 10 26 8 rrcurveto
+ -103 callsubr
+ -76 -6 rlineto
+ 0 -128 rlineto
+ 66 -98 callsubr
+ endchar
+
+
+ 0 64 572 rmoveto
+ 80 0 50 45 2 -102 callsubr
+ endchar
+
+
+ 0 -114 562 -107 callsubr
+ 228 0 -107 callsubr
+ endchar
+
+
+ 0 -114 -224 -107 callsubr
+ 228 0 -107 callsubr
+ endchar
+
+
+ 0 64 -228 rmoveto
+ 80 0 50 45 2 -102 callsubr
+ endchar
+
+
+ 574 287 421 rmoveto
+ 27 0 18 18 0 29 -99 callsubr
+ -29 20 -18 23 0 rrcurveto
+ -105 -26 rmoveto
+ 26 0 19 17 0 28 rrcurveto
+ 0 30 -21 16 -24 0 rrcurveto
+ -24 0 -21 -16 0 -30 rrcurveto
+ 0 -28 21 -17 24 0 rrcurveto
+ 210 -1 rmoveto
+ 28 0 18 17 0 29 rrcurveto
+ 0 29 -21 17 -25 0 rrcurveto
+ -23 0 -21 -17 0 -29 rrcurveto
+ 0 -29 21 -17 23 0 rrcurveto
+ -288 -81 rmoveto
+ 27 0 18 18 0 29 rrcurveto
+ 0 30 -19 15 -26 0 rrcurveto
+ -22 0 -21 -15 0 -30 rrcurveto
+ 0 -29 21 -18 22 0 rrcurveto
+ 368 0 rmoveto
+ 26 0 18 17 0 29 rrcurveto
+ 0 29 -20 16 -24 0 rrcurveto
+ -25 0 -21 -16 0 -29 rrcurveto
+ 0 -29 21 -17 25 0 rrcurveto
+ -396 -109 rmoveto
+ 28 0 18 17 0 30 rrcurveto
+ 0 28 -20 16 -26 -100 callsubr
+ 422 0 -97 callsubr
+ -25 0 -20 -16 0 -28 rrcurveto
+ 0 -30 20 -17 25 0 rrcurveto
+ -394 -108 rmoveto
+ 27 0 18 16 0 29 rrcurveto
+ 0 29 -19 17 -26 0 rrcurveto
+ -22 0 -21 -17 0 -29 rrcurveto
+ 0 -29 21 -16 22 0 rrcurveto
+ 368 0 rmoveto
+ 26 0 18 16 0 29 rrcurveto
+ 0 29 -20 17 -24 0 rrcurveto
+ -25 0 -21 -17 0 -29 rrcurveto
+ 0 -29 21 -16 25 0 rrcurveto
+ -290 -82 -97 callsubr
+ -24 0 -21 -16 0 -28 rrcurveto
+ 0 -30 21 -17 24 0 rrcurveto
+ 210 0 rmoveto
+ 28 0 18 17 0 30 rrcurveto
+ 0 28 -21 16 -25 -100 callsubr
+ -105 -27 rmoveto
+ 27 0 18 17 0 30 -99 callsubr
+ -30 20 -17 23 0 rrcurveto
+ endchar
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
diff --git a/Tests/varLib/interpolatable_test.py b/Tests/varLib/interpolatable_test.py
index 422001b55..4900d5229 100644
--- a/Tests/varLib/interpolatable_test.py
+++ b/Tests/varLib/interpolatable_test.py
@@ -85,5 +85,18 @@ class InterpolatableTest(unittest.TestCase):
self.assertIsNone(interpolatable_main(ttf_paths))
+ def test_interpolatable_otf(self):
+ suffix = '.otf'
+ ttx_dir = self.get_test_input('master_ttx_interpolatable_otf')
+
+ self.temp_dir()
+ ttx_paths = self.get_file_list(ttx_dir, '.ttx', 'TestFamily2-')
+ for path in ttx_paths:
+ self.compile_font(path, suffix, self.tempdir)
+
+ otf_paths = self.get_file_list(self.tempdir, suffix)
+ self.assertIsNone(interpolatable_main(otf_paths))
+
+
if __name__ == "__main__":
sys.exit(unittest.main())