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Support \tag, \tag*, and \gdef (#1309)

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* Tag sketch

* Drop objectAssign; already using Object.assign elsewhere

* Basic \gdef support

* Bug fix

* Finish \tag

* MathML numbers equations with <mlabeledtr>

* Fix flow bugs

* \gdef tests

* Add basic \tag tests

* Screenshot test for \tag

* \tag* test

* Add missing file

* Bug fix screenshot

* Major refactor

* Represent tag at top level of parse tree, requiring less hackery
  * No more \@tag function; it was essentially just doing \text
* Wrap tag in group so e.g. ( and ) are formatted the same
* Add `feed` method to MacroExpander for multiple inputs (for tag)
* Bug fixes in buildHTML, makeTextRow, _getBuilt (for display mode)
* Remove excess <mrow> wrapper when unnecessary

* Update screenshot from tag being wrapped in group

* Add maxExpand limit
This commit is contained in:
Erik Demaine
2018-05-19 16:19:21 -04:00
committed by Kevin Barabash
parent 99b2afa935
commit a0ddad338e
19 changed files with 370 additions and 107 deletions
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162
test/__snapshots__/mathml-spec.js.snap
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@@ -209,32 +209,30 @@ exports[`A MathML builder should render boldsymbol with the correct mathvariants
<math>
<semantics>
<mrow>
<mrow>
<mi mathvariant="bold-italic">
A
</mi>
<mi mathvariant="bold-italic">
x
</mi>
<mn mathvariant="bold-italic">
2
</mn>
<mi mathvariant="bold-italic">
k
</mi>
<mi mathvariant="bold-italic">
ω
</mi>
<mi mathvariant="bold-italic">
Ω
</mi>
<mi mathvariant="bold-italic">
ı
</mi>
<mo mathvariant="bold-italic">
+
</mo>
</mrow>
<mi mathvariant="bold-italic">
A
</mi>
<mi mathvariant="bold-italic">
x
</mi>
<mn mathvariant="bold-italic">
2
</mn>
<mi mathvariant="bold-italic">
k
</mi>
<mi mathvariant="bold-italic">
ω
</mi>
<mi mathvariant="bold-italic">
Ω
</mi>
<mi mathvariant="bold-italic">
ı
</mi>
<mo mathvariant="bold-italic">
+
</mo>
</mrow>
<annotation encoding="application/x-tex">
\\boldsymbol{Ax2k\\omega\\Omega\\imath+}
@@ -296,35 +294,33 @@ exports[`A MathML builder should render mathchoice as if there was nothing 2`] =
<math>
<semantics>
<mrow>
<mrow>
<msubsup>
<mo>
∑
</mo>
<mrow>
<mi>
k
</mi>
<mo>
=
</mo>
<mn>
0
</mn>
</mrow>
<mi mathvariant="normal">
∞
</mi>
</msubsup>
<msup>
<mi>
x
</mi>
<msubsup>
<mo>
∑
</mo>
<mrow>
<mi>
k
</mi>
</msup>
</mrow>
<mo>
=
</mo>
<mn>
0
</mn>
</mrow>
<mi mathvariant="normal">
∞
</mi>
</msubsup>
<msup>
<mi>
x
</mi>
<mi>
k
</mi>
</msup>
</mrow>
<annotation encoding="application/x-tex">
\\mathchoice{D}{\\sum_{k = 0}^{\\infty} x^k}{S}{SS}
@@ -391,12 +387,10 @@ exports[`A MathML builder should set href attribute for href appropriately 1`] =
<math>
<semantics>
<mrow>
<mrow href="http://example.org">
<mi>
α
</mi>
</mrow>
<mrow href="http://example.org">
<mi>
α
</mi>
</mrow>
<annotation encoding="application/x-tex">
\\href{http://example.org}{\\alpha}
@@ -505,3 +499,55 @@ exports[`A MathML builder should use <munderover> for large operators 1`] = `
</math>
`;
exports[`A MathML builder tags use <mlabeledtr> 1`] = `
<math>
<semantics>
<mtable side="right">
<mlabeledtr>
<mtd>
<mrow>
<mtext>
(
</mtext>
<mrow>
<mtext>
h
</mtext>
<mtext>
i
</mtext>
</mrow>
<mtext>
)
</mtext>
</mrow>
</mtd>
<mtd>
<mrow>
<mi>
x
</mi>
<mo>
+
</mo>
<msup>
<mi>
y
</mi>
<mn>
2
</mn>
</msup>
</mrow>
</mtd>
</mlabeledtr>
</mtable>
<annotation encoding="application/x-tex">
\\tag{hi} x+y^2
</annotation>
</semantics>
</math>
`;