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Fix \\ and \newline after operator (#1796)

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* Fix \\ and \newline after operator

Fix #1790.  `\\` and `\newline` render as a span with classes
`mspace` and `newline`.  We need to check for `newline` when bringing
spaces into the same `base` group.

* Add tests and comment
This commit is contained in:
Erik Demaine
2018-12-26 18:17:30 -05:00
committed by Kevin Barabash
parent 1a7ce6cf15
commit 8346294bf3
3 changed files with 124 additions and 2 deletions
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9
test/katex-spec.js
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@@ -3405,6 +3405,15 @@ describe("Newlines via \\\\ and \\newline", function() {
expect`a\\b\begin{matrix}x&y\\z&w\end{matrix}\\c`
.toParseLike`a\newline b\begin{matrix}x&y\cr z&w\end{matrix}\newline c`;
});
it("\\\\ causes newline, even after mrel and mop", () => {
const markup = katex.renderToString(r`M = \\ a + \\ b \\ c`);
// Ensure newlines appear outside base spans (because, in this regexp,
// base span occurs immediately after each newline span).
expect(markup).toMatch(
/(<span class="base">.*?<\/span><span class="mspace newline"><\/span>){3}<span class="base">/);
expect(markup).toMatchSnapshot();
});
});
describe("Symbols", function() {