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Fix math parsing in color #910

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Fix math parsing in color #910

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8daf965
fix math inside of color blocks
7w1 May 28, 2026
b706cb9
changeset
7w1 May 28, 2026
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5 changes: 5 additions & 0 deletions .changeset/fix-math-in-color.md
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Original file line number Diff line number Diff line change
@@ -0,0 +1,5 @@
---
default: patch
---

Fix math parsing inside of color blocks not being parsed properly.
8 changes: 7 additions & 1 deletion src/app/plugins/markdown/extensions/matrix-math.ts
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Expand Up @@ -221,12 +221,18 @@ function isIgnorableMathContent(latex: string): boolean {
* - the closing `$` is not preceded by whitespace, and
* - the closing `$` is not immediately followed by an ASCII digit.
*/
/** Opening `$[fg.color=…]` / `$[bg.color=…]` */
const MFM_COLOR_FN_OPEN = /^\$\[(?:fg|bg)\.color=/;

function tryTokenizeInlineMath(
src: string
): { type: 'math'; raw: string; latex: string } | undefined {
if (!src.startsWith('$')) {
return undefined;
}
if (MFM_COLOR_FN_OPEN.test(src)) {
return undefined;
}
if (src.startsWith('$$') && (src.length < 3 || src.charAt(2) !== '$')) {
return undefined;
}
Expand Down Expand Up @@ -256,7 +262,7 @@ export const matrixMathExtension = {
name: 'math',
level: 'inline',
start(src: string) {
if (/^\$\[(?:fg|bg)\.color=/.test(src)) return -1;
if (MFM_COLOR_FN_OPEN.test(src)) return -1;
return src.indexOf('$');
},
tokenizer(src: string) {
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