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fix(import/markdown): preserve escaped math expressions

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Elian Doran 2025-04-05 10:46:33 +03:00
parent 721bf455e1
commit 4bb767f8ee
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2 changed files with 15 additions and 2 deletions
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10
src/services/import/markdown.spec.ts
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@ -175,4 +175,14 @@ second line 2</code></pre><ul><li>Hello</li><li>world</li></ul><ol><li>Hello</li
expect(markdownService.renderToHtml(input, "Title")).toStrictEqual(expected);
});
it("preserves escaped math expressions", () => {
const scenarios = [
"\\$\\$\sqrt{x^{2}+1}\\$\\$",
"The equation is \\$e=mc^{2}\\$."
];
for (const scenario of scenarios) {
expect(markdownService.renderToHtml(scenario, "Title")).toStrictEqual(`<p>${scenario}</p>`);
}
});
});

7
src/services/import/markdown.ts
View File

@ -16,11 +16,11 @@ class CustomMarkdownRenderer extends Renderer {
if (text.includes("$")) {
// Display math
text = text.replaceAll(/\$\$(.+)\$\$/g,
text = text.replaceAll(/(?<!\\)\$\$(.+)\$\$/g,
`<span class="math-tex">\\\[$1\\\]</span>`);
// Inline math
text = text.replaceAll(/\$(.+)\$/g,
text = text.replaceAll(/(?<!\\)\$(.+)\$/g,
`<span class="math-tex">\\\($1\\\)</span>`);
}
@ -87,6 +87,9 @@ import { ADMONITION_TYPE_MAPPINGS } from "../export/markdown.js";
import utils from "../utils.js";
function renderToHtml(content: string, title: string) {
// Double-escape slashes in math expression because they are otherwise consumed by the parser somewhere.
content = content.replaceAll("\\$", "\\\\$");
let html = parse(content, {
async: false,
renderer: renderer