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// 14 february 2017
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#import "uipriv_darwin.h"
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#import "attrstr.h"
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// TODO explain the purpose of this file
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static void boolspec(uint32_t value, uint16_t type, uint16_t ifTrue, uint16_t ifFalse, uiprivAATBlock f)
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{
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// TODO are values other than 1 accepted for true by OpenType itself? (same for the rest of the file)
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if (value != 0) {
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f(type, ifTrue);
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return;
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}
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f(type, ifFalse);
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}
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// TODO remove the need for this
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// TODO remove x8tox32()
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#define x8tox32(x) ((uint32_t) (((uint8_t) (x)) & 0xFF))
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#define mkTag(a, b, c, d) \
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((x8tox32(a) << 24) | \
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(x8tox32(b) << 16) | \
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(x8tox32(c) << 8) | \
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x8tox32(d))
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// TODO double-check drawtext example to make sure all of these are used properly (I already screwed dlig up by putting clig twice instead)
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void uiprivOpenTypeToAAT(char a, char b, char c, char d, uint32_t value, uiprivAATBlock f)
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{
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switch (mkTag(a, b, c, d)) {
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case mkTag('l', 'i', 'g', 'a'):
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boolspec(value, kLigaturesType,
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kCommonLigaturesOnSelector,
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kCommonLigaturesOffSelector,
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f);
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break;
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case mkTag('r', 'l', 'i', 'g'):
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boolspec(value, kLigaturesType,
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kRequiredLigaturesOnSelector,
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kRequiredLigaturesOffSelector,
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f);
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break;
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case mkTag('d', 'l', 'i', 'g'):
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boolspec(value, kLigaturesType,
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kRareLigaturesOnSelector,
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kRareLigaturesOffSelector,
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f);
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break;
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case mkTag('c', 'l', 'i', 'g'):
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boolspec(value, kLigaturesType,
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kContextualLigaturesOnSelector,
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kContextualLigaturesOffSelector,
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f);
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break;
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case mkTag('h', 'l', 'i', 'g'):
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// This technically isn't what is meant by "historical ligatures", but Core Text's internal AAT-to-OpenType mapping says to include it, so we include it too
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case mkTag('h', 'i', 's', 't'):
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boolspec(value, kLigaturesType,
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kHistoricalLigaturesOnSelector,
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kHistoricalLigaturesOffSelector,
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f);
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break;
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case mkTag('u', 'n', 'i', 'c'):
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// TODO is this correct, or should we provide an else case?
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if (value != 0)
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// this is undocumented; it comes from Core Text's internal AAT-to-OpenType conversion table
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f(kLetterCaseType, 14);
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break;
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// TODO will the following handle all cases properly, or are elses going to be needed?
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case mkTag('p', 'n', 'u', 'm'):
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if (value != 0)
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f(kNumberSpacingType, kProportionalNumbersSelector);
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break;
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case mkTag('t', 'n', 'u', 'm'):
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if (value != 0)
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f(kNumberSpacingType, kMonospacedNumbersSelector);
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break;
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// TODO will the following handle all cases properly, or are elses going to be needed?
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case mkTag('s', 'u', 'p', 's'):
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if (value != 0)
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f(kVerticalPositionType, kSuperiorsSelector);
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break;
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case mkTag('s', 'u', 'b', 's'):
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if (value != 0)
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f(kVerticalPositionType, kInferiorsSelector);
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break;
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case mkTag('o', 'r', 'd', 'n'):
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if (value != 0)
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f(kVerticalPositionType, kOrdinalsSelector);
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break;
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case mkTag('s', 'i', 'n', 'f'):
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if (value != 0)
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f(kVerticalPositionType, kScientificInferiorsSelector);
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break;
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// TODO will the following handle all cases properly, or are elses going to be needed?
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case mkTag('a', 'f', 'r', 'c'):
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if (value != 0)
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f(kFractionsType, kVerticalFractionsSelector);
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break;
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case mkTag('f', 'r', 'a', 'c'):
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if (value != 0)
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f(kFractionsType, kDiagonalFractionsSelector);
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break;
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case mkTag('z', 'e', 'r', 'o'):
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boolspec(value, kTypographicExtrasType,
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kSlashedZeroOnSelector,
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kSlashedZeroOffSelector,
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f);
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break;
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case mkTag('m', 'g', 'r', 'k'):
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boolspec(value, kMathematicalExtrasType,
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kMathematicalGreekOnSelector,
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kMathematicalGreekOffSelector,
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f);
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break;
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case mkTag('o', 'r', 'n', 'm'):
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f(kOrnamentSetsType, (uint16_t) value);
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break;
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case mkTag('a', 'a', 'l', 't'):
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f(kCharacterAlternativesType, (uint16_t) value);
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break;
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case mkTag('t', 'i', 't', 'l'):
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// TODO is this correct, or should we provide an else case?
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if (value != 0)
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f(kStyleOptionsType, kTitlingCapsSelector);
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break;
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// TODO will the following handle all cases properly, or are elses going to be needed?
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case mkTag('t', 'r', 'a', 'd'):
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if (value != 0)
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f(kCharacterShapeType, kTraditionalCharactersSelector);
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break;
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case mkTag('s', 'm', 'p', 'l'):
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if (value != 0)
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f(kCharacterShapeType, kSimplifiedCharactersSelector);
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break;
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case mkTag('j', 'p', '7', '8'):
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if (value != 0)
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f(kCharacterShapeType, kJIS1978CharactersSelector);
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break;
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case mkTag('j', 'p', '8', '3'):
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if (value != 0)
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f(kCharacterShapeType, kJIS1983CharactersSelector);
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break;
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case mkTag('j', 'p', '9', '0'):
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if (value != 0)
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f(kCharacterShapeType, kJIS1990CharactersSelector);
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break;
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case mkTag('e', 'x', 'p', 't'):
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if (value != 0)
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f(kCharacterShapeType, kExpertCharactersSelector);
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break;
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case mkTag('j', 'p', '0', '4'):
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if (value != 0)
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f(kCharacterShapeType, kJIS2004CharactersSelector);
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break;
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case mkTag('h', 'o', 'j', 'o'):
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if (value != 0)
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f(kCharacterShapeType, kHojoCharactersSelector);
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break;
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case mkTag('n', 'l', 'c', 'k'):
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if (value != 0)
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f(kCharacterShapeType, kNLCCharactersSelector);
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break;
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case mkTag('t', 'n', 'a', 'm'):
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if (value != 0)
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f(kCharacterShapeType, kTraditionalNamesCharactersSelector);
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break;
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case mkTag('o', 'n', 'u', 'm'):
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// Core Text's internal AAT-to-OpenType mapping says to include this, so we include it too
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// TODO is it always set?
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case mkTag('l', 'n', 'u', 'm'):
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// TODO is this correct, or should we provide an else case?
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if (value != 0)
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f(kNumberCaseType, kLowerCaseNumbersSelector);
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break;
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case mkTag('h', 'n', 'g', 'l'):
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// TODO is this correct, or should we provide an else case?
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if (value != 0)
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f(kTransliterationType, kHanjaToHangulSelector);
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break;
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case mkTag('n', 'a', 'l', 't'):
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f(kAnnotationType, (uint16_t) value);
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break;
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case mkTag('r', 'u', 'b', 'y'):
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// include this for completeness
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boolspec(value, kRubyKanaType,
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kRubyKanaSelector,
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kNoRubyKanaSelector,
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f);
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// this is the current one
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boolspec(value, kRubyKanaType,
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kRubyKanaOnSelector,
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kRubyKanaOffSelector,
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f);
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break;
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case mkTag('i', 't', 'a', 'l'):
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// include this for completeness
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boolspec(value, kItalicCJKRomanType,
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kCJKItalicRomanSelector,
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kNoCJKItalicRomanSelector,
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f);
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// this is the current one
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boolspec(value, kItalicCJKRomanType,
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kCJKItalicRomanOnSelector,
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kCJKItalicRomanOffSelector,
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f);
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break;
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case mkTag('c', 'a', 's', 'e'):
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boolspec(value, kCaseSensitiveLayoutType,
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kCaseSensitiveLayoutOnSelector,
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kCaseSensitiveLayoutOffSelector,
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f);
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break;
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case mkTag('c', 'p', 's', 'p'):
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boolspec(value, kCaseSensitiveLayoutType,
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kCaseSensitiveSpacingOnSelector,
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kCaseSensitiveSpacingOffSelector,
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f);
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break;
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case mkTag('h', 'k', 'n', 'a'):
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boolspec(value, kAlternateKanaType,
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kAlternateHorizKanaOnSelector,
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kAlternateHorizKanaOffSelector,
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f);
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break;
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case mkTag('v', 'k', 'n', 'a'):
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boolspec(value, kAlternateKanaType,
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kAlternateVertKanaOnSelector,
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kAlternateVertKanaOffSelector,
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f);
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break;
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case mkTag('s', 's', '0', '1'):
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boolspec(value, kStylisticAlternativesType,
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kStylisticAltOneOnSelector,
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kStylisticAltOneOffSelector,
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f);
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break;
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case mkTag('s', 's', '0', '2'):
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boolspec(value, kStylisticAlternativesType,
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kStylisticAltTwoOnSelector,
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kStylisticAltTwoOffSelector,
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f);
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break;
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case mkTag('s', 's', '0', '3'):
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boolspec(value, kStylisticAlternativesType,
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kStylisticAltThreeOnSelector,
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kStylisticAltThreeOffSelector,
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f);
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break;
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case mkTag('s', 's', '0', '4'):
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boolspec(value, kStylisticAlternativesType,
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kStylisticAltFourOnSelector,
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kStylisticAltFourOffSelector,
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f);
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break;
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case mkTag('s', 's', '0', '5'):
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boolspec(value, kStylisticAlternativesType,
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kStylisticAltFiveOnSelector,
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kStylisticAltFiveOffSelector,
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f);
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break;
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case mkTag('s', 's', '0', '6'):
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boolspec(value, kStylisticAlternativesType,
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kStylisticAltSixOnSelector,
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kStylisticAltSixOffSelector,
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f);
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break;
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case mkTag('s', 's', '0', '7'):
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boolspec(value, kStylisticAlternativesType,
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kStylisticAltSevenOnSelector,
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kStylisticAltSevenOffSelector,
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f);
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break;
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case mkTag('s', 's', '0', '8'):
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boolspec(value, kStylisticAlternativesType,
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kStylisticAltEightOnSelector,
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kStylisticAltEightOffSelector,
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f);
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break;
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case mkTag('s', 's', '0', '9'):
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boolspec(value, kStylisticAlternativesType,
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kStylisticAltNineOnSelector,
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kStylisticAltNineOffSelector,
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f);
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break;
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case mkTag('s', 's', '1', '0'):
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boolspec(value, kStylisticAlternativesType,
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kStylisticAltTenOnSelector,
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kStylisticAltTenOffSelector,
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f);
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break;
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case mkTag('s', 's', '1', '1'):
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boolspec(value, kStylisticAlternativesType,
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kStylisticAltElevenOnSelector,
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kStylisticAltElevenOffSelector,
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f);
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break;
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case mkTag('s', 's', '1', '2'):
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boolspec(value, kStylisticAlternativesType,
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kStylisticAltTwelveOnSelector,
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kStylisticAltTwelveOffSelector,
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f);
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break;
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case mkTag('s', 's', '1', '3'):
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boolspec(value, kStylisticAlternativesType,
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kStylisticAltThirteenOnSelector,
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kStylisticAltThirteenOffSelector,
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f);
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break;
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case mkTag('s', 's', '1', '4'):
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boolspec(value, kStylisticAlternativesType,
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kStylisticAltFourteenOnSelector,
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kStylisticAltFourteenOffSelector,
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f);
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break;
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case mkTag('s', 's', '1', '5'):
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boolspec(value, kStylisticAlternativesType,
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kStylisticAltFifteenOnSelector,
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kStylisticAltFifteenOffSelector,
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f);
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break;
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case mkTag('s', 's', '1', '6'):
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boolspec(value, kStylisticAlternativesType,
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kStylisticAltSixteenOnSelector,
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kStylisticAltSixteenOffSelector,
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f);
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break;
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case mkTag('s', 's', '1', '7'):
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boolspec(value, kStylisticAlternativesType,
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kStylisticAltSeventeenOnSelector,
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kStylisticAltSeventeenOffSelector,
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f);
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break;
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case mkTag('s', 's', '1', '8'):
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boolspec(value, kStylisticAlternativesType,
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kStylisticAltEighteenOnSelector,
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kStylisticAltEighteenOffSelector,
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f);
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break;
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case mkTag('s', 's', '1', '9'):
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boolspec(value, kStylisticAlternativesType,
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kStylisticAltNineteenOnSelector,
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kStylisticAltNineteenOffSelector,
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f);
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break;
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case mkTag('s', 's', '2', '0'):
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boolspec(value, kStylisticAlternativesType,
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kStylisticAltTwentyOnSelector,
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kStylisticAltTwentyOffSelector,
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f);
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break;
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case mkTag('c', 'a', 'l', 't'):
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boolspec(value, kContextualAlternatesType,
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kContextualAlternatesOnSelector,
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kContextualAlternatesOffSelector,
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f);
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break;
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case mkTag('s', 'w', 's', 'h'):
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boolspec(value, kContextualAlternatesType,
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kSwashAlternatesOnSelector,
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kSwashAlternatesOffSelector,
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f);
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break;
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case mkTag('c', 's', 'w', 'h'):
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boolspec(value, kContextualAlternatesType,
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kContextualSwashAlternatesOnSelector,
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kContextualSwashAlternatesOffSelector,
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f);
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break;
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// TODO will the following handle all cases properly, or are elses going to be needed?
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case mkTag('s', 'm', 'c', 'p'):
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if (value != 0) {
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// include this for compatibility (some fonts that come with OS X still use this!)
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// TODO make it boolean?
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f(kLetterCaseType, kSmallCapsSelector);
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// this is the current one
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f(kLowerCaseType, kLowerCaseSmallCapsSelector);
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}
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break;
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case mkTag('p', 'c', 'a', 'p'):
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if (value != 0)
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f(kLowerCaseType, kLowerCasePetiteCapsSelector);
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break;
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// TODO will the following handle all cases properly, or are elses going to be needed?
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case mkTag('c', '2', 's', 'c'):
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if (value != 0)
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f(kUpperCaseType, kUpperCaseSmallCapsSelector);
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break;
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case mkTag('c', '2', 'p', 'c'):
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if (value != 0)
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f(kUpperCaseType, kUpperCasePetiteCapsSelector);
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break;
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}
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// TODO handle this properly
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// (it used to return 0 when this still returned the number of selectors produced but IDK what properly is anymore)
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}
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Reference in new issue
Block a user