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-rw-r--r--src/mfm/parser.ts1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/mfm/parser.ts b/src/mfm/parser.ts
index b86e1d5559..5572e26f88 100644
--- a/src/mfm/parser.ts
+++ b/src/mfm/parser.ts
@@ -361,6 +361,7 @@ const mfm = P.createLanguage({
const match = text.match(/^((【|\[)(.+?)(】|]))(\n|$)/);
if (!match) return P.makeFailure(i, 'not a title');
const q = match[1].trim().substring(1, match[1].length - 1);
+ if (q.includes('】')) return P.makeFailure(i, 'not a title');
const contents = P.alt(
r.big,
r.small,