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[indic] Add support for Grantha marks that may be used in Tamil to th… (#401) 

* [indic] Add support for Grantha marks that may be used in Tamil to the Indic table.

See https://bugzilla.mozilla.org/show_bug.cgi?id=1331339.

Testcase: U+0BA4,U+0BC6,U+1133c,U+0BAA,U+1133c,U+0BC6,U+1133c

* [indic] Add test for Grantha nukta that is allowed in Tamil by ScriptExtensions.txt
This commit is contained in:
jfkthame 2017-02-16 17:40:21 +00:00 committed by Behdad Esfahbod
parent d4bb52b9fd
commit 45766b673f
3 changed files with 8 additions and 0 deletions
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7
src/hb-ot-shape-complex-indic-table.cc
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@ -422,6 +422,13 @@ hb_indic_get_categories (hb_codepoint_t u)
if (hb_in_range (u, 0xAA60u, 0xAA7Fu)) return indic_table[u - 0xAA60u + indic_offset_0xaa60u];
break;
case 0x11u:
// According to ScriptExtensions.txt, these Grantha marks may also be used in Tamil,
// so the Indic shaper needs to know their categories.
if (unlikely (u == 0x11303)) return _(Vs,R);
if (unlikely (u == 0x1133c)) return _(N,B);
break;
default:
break;
}

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test/shaping/fonts/sha1sum/3493e92eaded2661cadde752a39f9d58b11f0326.ttf Normal file
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1
test/shaping/tests/indic-script-extensions.tests Normal file
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@ -0,0 +1 @@
fonts/sha1sum/3493e92eaded2661cadde752a39f9d58b11f0326.ttf::U+0BA4,U+0BC6,U+D804,U+DF3C,U+0BAA,U+D804,U+DF3C,U+0BC6,U+D804,U+DF3C:[u0BC6=0+2093|u1133C=0+0|u0BA4=0+1863|u0BC6=3+2093|u1133C=3+0|u0BAA=3+1706|u1133C=3+0]