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feat: Support {CD} (#2396)

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* Support {CD}

* Edit screenshotter test to fit on one page

* Update screenshots

* Remove bogus Safari screenshot

* Edit documentation to avoid tag conflicts and explain delimiters

* Add type annotations

* Add bogus safari screenshot

* Update with real Safari screenshot

* Set label vertical alignment

* Revise call to parseExpression() per PR 2085 changes to macro parsing

* Update Firefox screenshot

* Pick up review comments

* Add unit tests and snapshot.

* Tighten up label collection.

* Better loop index

* remove extra space

* Picked up comments. Added a parse check. Added a test.

Co-authored-by: ylemkimon <y@ylem.kim>
Co-authored-by: Kevin Barabash <kevinb@khanacademy.org>
Co-authored-by: Kevin Barabash <kevinb7@gmail.com>
This commit is contained in:
Ron Kok
2020-12-27 10:45:31 -08:00
committed by GitHub
parent b34175bd92
commit 75a3af9725
17 changed files with 652 additions and 14 deletions
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25
test/katex-spec.js
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@@ -2778,6 +2778,7 @@ describe("AMS environments", function() {
expect`\begin{alignat*}{2}10&x+ &3&y = 2\\3&x+&13&y = 4\end{alignat*}`.not.toParse(nonstrictSettings);
expect`\begin{equation}a=b+c\end{equation}`.not.toParse(nonstrictSettings);
expect`\begin{split}a &=b+c\\&=e+f\end{split}`.not.toParse(nonstrictSettings);
expect`\begin{CD}A @>a>> B \\@VbVV @AAcA\\C @= D\end{CD}`.not.toParse(nonstrictSettings);
});
const nonStrictDisplay = new Settings({displayMode: true, strict: false});
@@ -2791,6 +2792,7 @@ describe("AMS environments", function() {
expect`\begin{equation}a=b+c\end{equation}`.toBuild(nonStrictDisplay);
expect`\begin{equation}\begin{split}a &=b+c\\&=e+f\end{split}\end{equation}`.toBuild(nonStrictDisplay);
expect`\begin{split}a &=b+c\\&=e+f\end{split}`.toBuild(nonStrictDisplay);
expect`\begin{CD}A @<a<< B @>>b> C @>>> D\\@. @| @AcAA @VVdV \\@. E @= F @>>> G\end{CD}`.toBuild(nonStrictDisplay);
});
it("{equation} should fail if argument contains two rows.", () => {
@@ -2807,6 +2809,29 @@ describe("AMS environments", function() {
});
});
describe("The CD environment", function() {
it("should fail if not is display mode", function() {
expect(`\\begin{CD}A @<a<< B @>>b> C @>>> D\\\\@. @| @AcAA @VVdV \\\\@. E @= F @>>> G\\end{CD}`).not.toParse(
new Settings({displayMode: false, strict: false})
);
});
const displaySettings = new Settings({displayMode: true, strict: false});
it("should fail if the character after '@' is not in <>AV=|.", function() {
expect(`\\begin{CD}A @X<a<< B @>>b> C @>>> D\\\\@. @| @AcAA @VVdV \\\\@. E @= F @>>> G\\end{CD}`).not.toParse(displaySettings);
});
it("should fail if an arrow does not have its final character.", function() {
expect(`\\begin{CD}A @<a< B @>>b> C @>>> D\\\\@. @| @AcAA @VVdV \\\\@. E @= F @>>> G\\end{CD}`).not.toParse(displaySettings);
expect(`\\begin{CD}A @<a<< B @>>b C @>>> D\\\\@. @| @AcAA @VVdV \\\\@. E @= F @>>> G\\end{CD}`).not.toParse(displaySettings);
});
it("should fail without an \\\\end.", function() {
expect(`\\begin{CD}A @<a<< B @>>b> C @>>> D\\\\@. @| @AcAA @VVdV \\\\@. E @= F @>>> G`).not.toParse(displaySettings);
});
it("should succeed without the flaws noted above.", function() {
expect(`\\begin{CD}A @<a<< B @>>b> C @>>> D\\\\@. @| @AcAA @VVdV \\\\@. E @= F @>>> G\\end{CD}`).toBuild(displaySettings);
});
});
describe("operatorname support", function() {
it("should not fail", function() {
expect("\\operatorname{x*Π∑\\Pi\\sum\\frac a b}").toBuild();