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fix: unescape markdown-escaped characters in math formulas to fix #608 (#637)

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When editing reports, tiptap-markdown escapes special characters (*, _, [, ])
which corrupts LaTeX formulas. This fix:

1. Adds unescapeLatexInMath() function to reverse markdown escaping within
   math delimiters ($...$ and 94410...94410)
2. Applies the unescape function in the editor's onChange callback to clean
   the markdown before storing it
3. Adds comprehensive tests covering edge cases and round-trip scenarios

The fix ensures formulas like $(f * g)[n]$ remain unescaped when editing,
preventing display errors after save/reload.
This commit is contained in:
Willem Jiang
2025-10-21 10:06:31 +08:00
committed by GitHub
parent cb5c477371
commit 1a16677d1a
3 changed files with 127 additions and 3 deletions
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5
web/src/components/editor/index.tsx
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@@ -31,7 +31,7 @@ import GenerativeMenuSwitch from "./generative/generative-menu-switch";
import { uploadFn } from "./image-upload";
import { TextButtons } from "./selectors/text-buttons";
import { slashCommand, suggestionItems } from "./slash-command";
import { normalizeMathForEditor } from "~/core/utils/markdown";
import { normalizeMathForEditor, unescapeLatexInMath } from "~/core/utils/markdown";
// import { defaultEditorContent } from "./content";
import "~/styles/prosemirror.css";
@@ -74,7 +74,8 @@ const ReportEditor = ({ content, onMarkdownChange }: ReportEditorProps) => {
const debouncedUpdates = useDebouncedCallback(
async (editor: EditorInstance) => {
if (onMarkdownChange) {
const markdown = editor.storage.markdown.getMarkdown();
let markdown = editor.storage.markdown.getMarkdown();
markdown = unescapeLatexInMath(markdown);
onMarkdownChange(markdown);
}
setSaveStatus("Saved");