771a8f5028
[Indic] exclude ligatures when matching on Indic category
...
If, say, a H,ZWJ,C ligature was formed, we don't want the code to detec
that as a Halant. So, ignore ligatures when matching category in
final_reordering.
Sinhala failures down from 514 to 455 (0.167374%).
2012-07-23 20:09:30 -04:00
baacd090df
[Indic] Minor refactoring
2012-07-23 19:51:48 -04:00
c7c4de2fb9
[Indic] Remove syllable length check before sorting
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We now limit syllable lengths in the machine. No need to match here.
2012-07-23 18:25:02 -04:00
2cc933aff9
[Indic] Fix cluster formation with left-matras and conjunct forms
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Test case was: <U+0D15,U+0D4D,U+0D15,U+0D4A>.
2012-07-23 08:23:44 -04:00
e6b01a878c
[Indic] Further streamline cluster formation
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This should address all possible cluster misformations that I had in
mind.
2012-07-23 00:11:26 -04:00
7b2a7dadd6
[Indic] Merge clusters before sorting
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This should fix any instabilities in cluster formation that we were
speculating may happen with surrounding syllables. Or most of it
perhaps.
2012-07-22 23:58:55 -04:00
abb3239ef9
[Indic] Update clusters for left-matra even if matra didn't move
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Fixes crashes reported with left matra under
non-uniscribe-bug-compatibilty mode.
2012-07-22 23:55:19 -04:00
92a1ad7bef
[Indic] Stop searching for base if a post form is found before below form
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Improves Bengali and Gurmukhi. Malayalam regressed a bit. We will deal
with that later.
2012-07-20 18:55:15 -04:00
4c450c703f
[Indic] Recompose Bengali Ya,Nukta
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This is a bunch of hacks for now.
Improves Bengali a bit.
2012-07-20 18:13:04 -04:00
34ae336f3f
[Indic] Improve Reph AfterMain positioning
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Fixes 20 out of 48 failing Oriya tests. Failure rate down to 0.066% now.
2012-07-20 16:17:28 -04:00
bdd080431a
[Indic] Reposition Oriya Candrabindu
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Oriya failures down from 0.65% to 0.20%.
2012-07-20 16:03:09 -04:00
5f0eaaad12
[Indic] Fix base search in final_reordering
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Fixes most Malayalam failures. Down from 1.6% to 0.38% now. Fixes a
few more in other scripts too.
2012-07-20 15:47:24 -04:00
81202bd860
[Indic] Don't attach SM/VD to other characters
2012-07-20 15:14:51 -04:00
f31d97e44e
[Indic] Form Telugu Reph out of Ra,Virama,ZWJ
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Apparently this was approved in Feb 2012. No font yet.
2012-07-20 14:13:35 -04:00
30c3d5e9fc
[Indic] Simplify Uniscribe cluster emulation
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Now that we break syllables on Halant,ZWNJ, this code can be simplified.
2012-07-20 13:56:32 -04:00
decf6ffca4
[Indic] Minor!
2012-07-20 13:51:31 -04:00
9e4f94a72c
[Indic] Break syllables at Halant,ZWNJ
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That's really what Uniscribe does, and explains a lot of pecularities of
Halant,ZWNJ before the base.
Sent Telugu from 1% failures to 0.03%. Improved Kannada and Malayalam
slightly. Fixed half of Bengali, and did NOT break anything!
2012-07-20 13:48:03 -04:00
2c372b80f6
[Indic] Better check for applying 'init'
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Specifically, don't apply 'init' if previous char is a joiner.
Fixes some more of Bengali.
2012-07-20 13:37:48 -04:00
8ed248de77
[Indic] Minor
2012-07-20 11:42:24 -04:00
d0e68dbd0b
[Indic] Implement reph positioning step 5
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Not tuned, just copied from step 2. Fixes another 0.5% of Kannada
failures. 1% to go.
2012-07-20 11:25:41 -04:00
a9e45c32e4
[Indic] Don't let ZWNJ at the end of syllable affect base search
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Fixes a few Devanagari, half of remaining Kannada failures, quarter for
Telugu, and others slightly improved or unchanged.
2012-07-20 11:04:15 -04:00
20b68e699f
[Indic] Apply 'cjct' globally
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Fixes 5 Devanagari failures, and no regressions.
2012-07-20 10:47:46 -04:00
51e764de44
[Indic] Unbreak old scriptures
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Brings down failures with Lohit-Telugu from 57% to 1.40%.
2012-07-20 10:30:24 -04:00
900cf3d449
Minor
2012-07-20 10:18:23 -04:00
87cd63266e
[Indic] Recategorize some Kannada right matras
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Kannada failures down from 3.5% to 2.93%.
2012-07-19 21:25:46 -04:00
3604d64ced
[Indic] Recategorize GURMUKHI ADDAK
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It's not in IndicSyllabicCategory.txt. Fixes most of Gurmukhi failures.
Failures down from 7.7% to 0.222%!
2012-07-19 21:13:04 -04:00
5249f3aee1
[Indic] Unbreak Khmer
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For Khmer, all consonants are subjoining. No need to look in the font.
We were looking in the wrong order anyway.
2012-07-19 20:30:22 -04:00
e0475345d5
[Indic] Apply 'akhn' globally
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Fixes 1.5% more failures for Telugu, 2% for Kannada.
Breaks one test in Devanagari.
2012-07-19 20:24:14 -04:00
fa247ebe52
[Indic] Better position U+0CD5
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Fixes another 5% of Kannada failures.
2012-07-19 19:52:19 -04:00
f055442716
[Indic] Lookup consonant position in the font
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Fixes most failures of Oriya, and improves others a bit.
2012-07-19 16:20:21 -04:00
8c973ebf0f
[Indic] Implement per-script matra positioning
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Following what the spec says.
Brings down Telugu failures from 40% to 3.75%, and Kannada failures from
44% to 10%. Does NOT affect other scripts' test results.
2012-07-19 13:25:08 -04:00
8bb32458f9
[Indic] More refactoring
2012-07-19 13:04:44 -04:00
9ccc6382ba
[Indic] Minor refactoring
2012-07-19 12:45:31 -04:00
be8b9f5f71
[Indic] Start refactoring different matra positions per script
2012-07-19 12:11:12 -04:00
10cdc94eee
[Indic] In final reordering, find base, even if it disappeared
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POS_BASE can disappear if base ligated backward. Define base as last
with position not after base.
Fixes a few hundred of Sinhala failures with Iskoola Pota.
2012-07-18 17:43:23 -04:00
9c4d24a3a6
[Indic] Minor
2012-07-18 17:29:10 -04:00
3285e107c9
[Indic] Implement Sinhala "Al Lakuna" Reph behavior
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In Sinhala, Reph is formed only explicitly, by the presence of a ZWJ.
2012-07-18 17:22:14 -04:00
552d19b7a1
[Indic] Treat Register Shifters like Nukta
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Really this time.
Fixes another 18 Khmer tests.
2012-07-18 16:02:33 -04:00
e8cd81f76d
[Indic] Minor
2012-07-18 16:00:20 -04:00
69f26bf39c
[Indic] Fix Matra reordering when base is at end of syllable
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For example: U+915,U+200c,U+93f
Fixes last Tamil failure!
2012-07-18 15:47:51 -04:00
075d671f10
[Indic] Fix out-of-bounds array access
2012-07-18 15:41:53 -04:00
14dbdd9e39
[Indic] Unbreak Tamil
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Tamil has only about 150 failures now!
2012-07-18 13:13:03 -04:00
db8981f1e0
[Indic] Position Khmer Robat
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It's a visual Repha.
Still not positioning logical Repha as occurs in Malayalam.
Another 200 Khmer failures fixed. 547 to go. That's better than
Devanagari!
2012-07-17 23:42:04 -04:00
25bc489498
[Indic] Better categorize Register Shifters and Khmer Various signs
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Down another 500 or so Khmer failures!
2012-07-17 17:53:03 -04:00
25e302da9a
[Indic] Minor
2012-07-17 14:25:14 -04:00
5d32690a34
[Indic] For scripts without Half forms, always choose first consonant as base
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In such scripts (ie. Khmer), a ZWJ/ZWNJ shouldn't stop the search for
base. So, instead just choose the first consonant as base directly.
Test sequence:
U+1798,200c,U+17C9,U+17D2,U+179B,U+17C1,U+17C7
2012-07-17 14:23:28 -04:00
0201e0a464
[Indic] Apply 'cfar' for Khmer
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Mark stuff after a pre-base reordering Ro 'cfar'. Used in Khmer.
This allows distinguishing the following cases with MS Khmer fonts:
U+1784,U+17D2,U+179A,U+17D2,U+1782
U+1784,U+17D2,U+1782,U+17D2,U+179A
2012-07-17 13:56:24 -04:00
55f70ebfb9
[Indic] Position final subjoined consonants (and vowels) after matras
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In Khmer, a final subjoined consonant or independent vowel can occur
after matras. This final subjoined thing should NOT be reordered to
before the matra even though it's subjoined.
Fixes another 1k of the Khmer failures. Not much left really.
2012-07-17 12:50:13 -04:00
c50ed71e9a
[Indic] Recategorize Khmer coeng sign as a separate category OT_Coeng
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Amend the syllable structure to allow a final subscripted consonant
(Coeng+C) and a final subscripted independent vowel (Coeng+V).
Fixes another 2k of Khmer failures.
2012-07-17 11:54:28 -04:00
deb521dee4
[Indic] Add a separate Coeng class
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No characters recategorized yet. No semantic change.
2012-07-17 11:37:32 -04:00
Behdad Esfahbod