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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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205
test/__snapshots__/mathml-spec.js.snap
View File

@@ -204,6 +204,211 @@ exports[`A MathML builder normal spaces render normally 1`] = `
</math>
`;
exports[`A MathML builder should build the CD environment properly 1`] = `
<math xmlns="http://www.w3.org/1998/Math/MathML"
display="block"
>
<semantics>
<mtable rowspacing="0.2500em"
columnalign="center center center"
columnspacing="0.5em"
>
<mtr>
<mtd>
<mstyle scriptlevel="0"
displaystyle="true"
>
<mi>
A
</mi>
</mstyle>
</mtd>
<mtd>
<mstyle scriptlevel="0"
displaystyle="true"
>
<munderover>
<mo stretchy="true"
minsize="3.0em"
>
→
</mo>
<mpadded width="+0.6em"
lspace="0.3em"
>
<mrow>
</mrow>
</mpadded>
<mpadded width="+0.6em"
lspace="0.3em"
>
<mi>
a
</mi>
</mpadded>
</munderover>
</mstyle>
</mtd>
<mtd>
<mstyle scriptlevel="0"
displaystyle="true"
>
<mi>
B
</mi>
</mstyle>
</mtd>
</mtr>
<mtr>
<mtd>
<mstyle scriptlevel="0"
displaystyle="true"
>
<mrow>
<mrow>
<mstyle displaystyle="false"
scriptlevel="1"
>
<mpadded width="0"
lspace="-1width"
voffset="0.7em"
>
<mrow>
<mrow>
</mrow>
</mrow>
</mpadded>
</mstyle>
<mo fence="false"
stretchy="true"
minsize="1.8em"
maxsize="1.8em"
>
↓
</mo>
<mstyle displaystyle="false"
scriptlevel="1"
>
<mpadded width="0"
voffset="0.7em"
>
<mrow>
<mi>
b
</mi>
</mrow>
</mpadded>
</mstyle>
</mrow>
</mrow>
</mstyle>
</mtd>
<mtd>
<mstyle scriptlevel="0"
displaystyle="true"
>
</mstyle>
</mtd>
<mtd>
<mstyle scriptlevel="0"
displaystyle="true"
>
<mrow>
<mrow>
<mstyle displaystyle="false"
scriptlevel="1"
>
<mpadded width="0"
lspace="-1width"
voffset="0.7em"
>
<mrow>
<mrow>
</mrow>
</mrow>
</mpadded>
</mstyle>
<mo fence="false"
stretchy="true"
minsize="1.8em"
maxsize="1.8em"
>
↓
</mo>
<mstyle displaystyle="false"
scriptlevel="1"
>
<mpadded width="0"
voffset="0.7em"
>
<mrow>
<mi>
c
</mi>
</mrow>
</mpadded>
</mstyle>
</mrow>
</mrow>
</mstyle>
</mtd>
</mtr>
<mtr>
<mtd>
<mstyle scriptlevel="0"
displaystyle="true"
>
<mi>
C
</mi>
</mstyle>
</mtd>
<mtd>
<mstyle scriptlevel="0"
displaystyle="true"
>
<munderover>
<mo stretchy="true"
minsize="3.0em"
>
→
</mo>
<mpadded width="+0.6em"
lspace="0.3em"
>
<mrow>
</mrow>
</mpadded>
<mpadded width="+0.6em"
lspace="0.3em"
>
<mi>
d
</mi>
</mpadded>
</munderover>
</mstyle>
</mtd>
<mtd>
<mstyle scriptlevel="0"
displaystyle="true"
>
<mi>
D
</mi>
</mstyle>
</mtd>
</mtr>
<mtr>
</mtr>
</mtable>
<annotation encoding="application/x-tex">
\\begin{CD} A @&gt;a&gt;&gt; B\\\\ @VVbV @VVcV\\\\ C @&gt;d&gt;&gt; D \\end{CD}
</annotation>
</semantics>
</math>
`;
exports[`A MathML builder should concatenate digits into single <mn> 1`] = `
<math xmlns="http://www.w3.org/1998/Math/MathML">
<semantics>