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Support Unicode Symbols (#950)
* Support Unicode Symbols This is the third in a series of PRs to give KaTeX the ability to recognize Unicode character input. This one supports some but not all letter-like symbols and some other symbols. All the characters in this PR will produce `textord` atoms in `math` mode. The list is not comprehensive. It’s a bit eclectic. Some of these characters are important. Others were just easy to include. A few important characters are omitted because it wasn’t clear to me which is the best way to implement them. I’ll address those characters in future PRs. * Add comments. Remove RegEx. * Fix omitted parens
This commit is contained in:
Ron Kok
Kevin Barabash
@@ -48,6 +48,15 @@ defineMacro("\\egroup", "}");
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defineMacro("\\begingroup", "{");
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defineMacro("\\endgroup", "}");
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// Unicode double-struck letters
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defineMacro("\u2102", "\\mathbb{C}");
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defineMacro("\u210D", "\\mathbb{H}");
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defineMacro("\u2115", "\\mathbb{N}");
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defineMacro("\u2119", "\\mathbb{P}");
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defineMacro("\u211A", "\\mathbb{Q}");
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defineMacro("\u211D", "\\mathbb{R}");
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defineMacro("\u2124", "\\mathbb{Z}");
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// We don't distinguish between math and nonmath kerns.
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// (In TeX, the mu unit works only with \mkern.)
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defineMacro("\\mkern", "\\kern");
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@@ -108,22 +108,22 @@ defineSymbol(math, main, textord, "\u0023", "\\#");
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defineSymbol(text, main, textord, "\u0023", "\\#");
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defineSymbol(math, main, textord, "\u0026", "\\&");
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defineSymbol(text, main, textord, "\u0026", "\\&");
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defineSymbol(math, main, textord, "\u2135", "\\aleph");
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defineSymbol(math, main, textord, "\u2200", "\\forall");
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defineSymbol(math, main, textord, "\u2135", "\\aleph", true);
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defineSymbol(math, main, textord, "\u2200", "\\forall", true);
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defineSymbol(math, main, textord, "\u210f", "\\hbar");
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defineSymbol(math, main, textord, "\u2203", "\\exists");
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defineSymbol(math, main, textord, "\u2207", "\\nabla");
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defineSymbol(math, main, textord, "\u266d", "\\flat");
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defineSymbol(math, main, textord, "\u2113", "\\ell");
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defineSymbol(math, main, textord, "\u266e", "\\natural");
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defineSymbol(math, main, textord, "\u2663", "\\clubsuit");
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defineSymbol(math, main, textord, "\u2118", "\\wp");
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defineSymbol(math, main, textord, "\u266f", "\\sharp");
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defineSymbol(math, main, textord, "\u2662", "\\diamondsuit");
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defineSymbol(math, main, textord, "\u211c", "\\Re");
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defineSymbol(math, main, textord, "\u2661", "\\heartsuit");
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defineSymbol(math, main, textord, "\u2111", "\\Im");
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defineSymbol(math, main, textord, "\u2660", "\\spadesuit");
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defineSymbol(math, main, textord, "\u2203", "\\exists", true);
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defineSymbol(math, main, textord, "\u2207", "\\nabla", true);
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defineSymbol(math, main, textord, "\u266d", "\\flat", true);
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defineSymbol(math, main, textord, "\u2113", "\\ell", true);
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defineSymbol(math, main, textord, "\u266e", "\\natural", true);
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defineSymbol(math, main, textord, "\u2663", "\\clubsuit", true);
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defineSymbol(math, main, textord, "\u2118", "\\wp", true);
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defineSymbol(math, main, textord, "\u266f", "\\sharp", true);
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defineSymbol(math, main, textord, "\u2662", "\\diamondsuit", true);
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defineSymbol(math, main, textord, "\u211c", "\\Re", true);
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defineSymbol(math, main, textord, "\u2661", "\\heartsuit", true);
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defineSymbol(math, main, textord, "\u2111", "\\Im", true);
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defineSymbol(math, main, textord, "\u2660", "\\spadesuit", true);
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// Math and Text
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defineSymbol(math, main, textord, "\u2020", "\\dag");
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@@ -251,11 +251,11 @@ defineSymbol(math, ams, textord, "\u25ca", "\\lozenge");
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defineSymbol(math, ams, textord, "\u24c8", "\\circledS");
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defineSymbol(math, ams, textord, "\u00ae", "\\circledR");
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defineSymbol(text, ams, textord, "\u00ae", "\\circledR");
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defineSymbol(math, ams, textord, "\u2221", "\\measuredangle");
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defineSymbol(math, ams, textord, "\u2221", "\\measuredangle", true);
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defineSymbol(math, ams, textord, "\u2204", "\\nexists");
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defineSymbol(math, ams, textord, "\u2127", "\\mho");
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defineSymbol(math, ams, textord, "\u2132", "\\Finv");
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defineSymbol(math, ams, textord, "\u2141", "\\Game");
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defineSymbol(math, ams, textord, "\u2132", "\\Finv", true);
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defineSymbol(math, ams, textord, "\u2141", "\\Game", true);
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defineSymbol(math, ams, textord, "\u006b", "\\Bbbk");
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defineSymbol(math, ams, textord, "\u2035", "\\backprime");
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defineSymbol(math, ams, textord, "\u25b2", "\\blacktriangle");
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@@ -263,22 +263,24 @@ defineSymbol(math, ams, textord, "\u25bc", "\\blacktriangledown");
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defineSymbol(math, ams, textord, "\u25a0", "\\blacksquare");
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defineSymbol(math, ams, textord, "\u29eb", "\\blacklozenge");
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defineSymbol(math, ams, textord, "\u2605", "\\bigstar");
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defineSymbol(math, ams, textord, "\u2222", "\\sphericalangle");
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defineSymbol(math, ams, textord, "\u2201", "\\complement");
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defineSymbol(math, ams, textord, "\u00f0", "\\eth");
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defineSymbol(math, ams, textord, "\u2222", "\\sphericalangle", true);
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defineSymbol(math, ams, textord, "\u2201", "\\complement", true);
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// unicode-math maps U+F0 to \matheth. We map to AMS function \eth
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defineSymbol(math, ams, textord, "\u00f0", "\\eth", true);
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defineSymbol(math, ams, textord, "\u2571", "\\diagup");
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defineSymbol(math, ams, textord, "\u2572", "\\diagdown");
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defineSymbol(math, ams, textord, "\u25a1", "\\square");
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defineSymbol(math, ams, textord, "\u25a1", "\\Box");
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defineSymbol(math, ams, textord, "\u25ca", "\\Diamond");
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defineSymbol(math, ams, textord, "\u00a5", "\\yen");
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defineSymbol(math, ams, textord, "\u2713", "\\checkmark");
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// unicode-math maps U+A5 to \mathyen. We map to AMS function \yen
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defineSymbol(math, ams, textord, "\u00a5", "\\yen", true);
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defineSymbol(math, ams, textord, "\u2713", "\\checkmark", true);
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defineSymbol(text, ams, textord, "\u2713", "\\checkmark");
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// AMS Hebrew
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defineSymbol(math, ams, textord, "\u2136", "\\beth");
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defineSymbol(math, ams, textord, "\u2138", "\\daleth");
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defineSymbol(math, ams, textord, "\u2137", "\\gimel");
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defineSymbol(math, ams, textord, "\u2136", "\\beth", true);
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defineSymbol(math, ams, textord, "\u2138", "\\daleth", true);
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defineSymbol(math, ams, textord, "\u2137", "\\gimel", true);
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// AMS Greek
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defineSymbol(math, ams, textord, "\u03dd", "\\digamma");
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@@ -436,8 +438,8 @@ defineSymbol(text, main, textord, "%", "\\%");
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defineSymbol(math, main, textord, "_", "\\_");
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defineSymbol(text, main, textord, "_", "\\_");
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defineSymbol(text, main, textord, "_", "\\textunderscore");
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defineSymbol(math, main, textord, "\u2220", "\\angle");
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defineSymbol(math, main, textord, "\u221e", "\\infty");
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defineSymbol(math, main, textord, "\u2220", "\\angle", true);
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defineSymbol(math, main, textord, "\u221e", "\\infty", true);
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defineSymbol(math, main, textord, "\u2032", "\\prime");
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defineSymbol(math, main, textord, "\u25b3", "\\triangle");
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defineSymbol(math, main, textord, "\u0393", "\\Gamma", true);
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@@ -563,7 +565,7 @@ defineSymbol(math, ams, bin, "\u22bb", "\\veebar", true);
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defineSymbol(math, main, bin, "\u2299", "\\odot", true);
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defineSymbol(math, main, bin, "\u2295", "\\oplus", true);
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defineSymbol(math, main, bin, "\u2297", "\\otimes", true);
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defineSymbol(math, main, textord, "\u2202", "\\partial");
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defineSymbol(math, main, textord, "\u2202", "\\partial", true);
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defineSymbol(math, main, bin, "\u2298", "\\oslash", true);
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defineSymbol(math, ams, bin, "\u229a", "\\circledcirc", true);
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defineSymbol(math, ams, bin, "\u22a1", "\\boxdot", true);
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@@ -669,7 +671,7 @@ defineSymbol(text, main, textord, "\u00b0", "\\degree");
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// TODO: In LaTeX, \pounds can generate a different character in text and math
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// mode, but among our fonts, only Main-Italic defines this character "163".
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defineSymbol(math, main, mathord, "\u00a3", "\\pounds");
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defineSymbol(math, main, mathord, "\u00a3", "\\mathsterling");
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defineSymbol(math, main, mathord, "\u00a3", "\\mathsterling", true);
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defineSymbol(text, main, mathord, "\u00a3", "\\pounds");
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defineSymbol(text, main, mathord, "\u00a3", "\\textsterling");
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defineSymbol(math, ams, textord, "\u2720", "\\maltese");
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@@ -2678,6 +2678,10 @@ describe("Unicode", function() {
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expect("⊂⊃⊆⊇⊏⊐⊑⊒⊢⊣⊩⊪⊸⋈⋍⋐⋑⋔⋙⋛⋞⋟⌢⌣⩾⪆⪌⪕⪖⪯⪰⪷⪸⫅⫆").toParse();
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});
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it("should parse symbols", function() {
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expect("£¥ðℂℍℑℓℕ℘ℙℚℜℝℤℲℵℶℷℸ⅁∀∁∂∃∇∞∠∡∢♠♡♢♣♭♮♯✓").toParse();
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});
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it("should parse arrows", function() {
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expect("←↑→↓↔↕↖↗↘↙↚↛↞↠↢↣↦↩↪↫↬↭↮↰↱↶↷↼↽↾↾↿⇀⇁⇂⇃⇄⇆⇇⇈⇉").toParse();
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});
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