fix(web/blog): unescape quoted announcement values in the Discussion announcer

web/scripts/blog-announce-discussion.mjs

@@ -53,6 +53,22 @@ export function splitFrontmatter(content) {
 	return { fm: m[1], rest: content.slice(m[0].length) };
 }
 
+/**
+ * Strip one layer of YAML quoting from a scalar and unescape that style.
+ * Single quotes double an apostrophe (`''` -> `'`); double quotes use `\"`
+ * and `\\`. The style is decided once, so a value like `'"x"'` is stripped
+ * exactly one layer rather than twice.
+ */
+function unquoteScalar(raw) {
+	if (raw.length >= 2 && raw.startsWith("'") && raw.endsWith("'")) {
+		return raw.slice(1, -1).replace(/''/g, "'");
+	}
+	if (raw.length >= 2 && raw.startsWith('"') && raw.endsWith('"')) {
+		return raw.slice(1, -1).replace(/\\(["\\])/g, '$1');
+	}
+	return raw;
+}
+
 /**
  * Extract { title, body, category, discussionUrl } from an `announcement:`
  * block, or return null when the post has none.
@@ -99,7 +115,7 @@ export function extractAnnouncement(fm) {
 		}
 
 		if (raw !== '') {
-			out[key] = raw.replace(/^'(.*)'$/, '$1').replace(/^"(.*)"$/, '$1');
+			out[key] = unquoteScalar(raw);
 		}
 		i++;
 	}

web/scripts/blog-announce-discussion.test.mjs

@@ -40,6 +40,26 @@ test('extractAnnouncement returns null when the block is missing', () => {
 	assert.equal(extractAnnouncement('title: hello\n'), null);
 });
 
+test("extractAnnouncement unescapes doubled single quotes inside a single-quoted scalar", () => {
+	const fm = `announcement:\n  title: 'the upgrade doesn''t touch'\n  body: |\n    body text\n`;
+	assert.equal(extractAnnouncement(fm).title, "the upgrade doesn't touch");
+});
+
+test('extractAnnouncement unescapes backslash escapes in a double-quoted scalar', () => {
+	const fm = `announcement:\n  title: "say \\"hi\\" and back\\\\slash"\n  body: |\n    body text\n`;
+	assert.equal(extractAnnouncement(fm).title, 'say "hi" and back\\slash');
+});
+
+test('extractAnnouncement strips a single-quoted scalar only once', () => {
+	const fm = `announcement:\n  title: '"x"'\n  body: |\n    body text\n`;
+	assert.equal(extractAnnouncement(fm).title, '"x"');
+});
+
+test('extractAnnouncement leaves a plain unquoted scalar unchanged', () => {
+	const fm = `announcement:\n  title: Plain title\n  body: |\n    body text\n`;
+	assert.equal(extractAnnouncement(fm).title, 'Plain title');
+});
+
 test('extractSlug reads an unquoted slug', () => {
 	assert.equal(extractSlug(SAMPLE_FM), 'pretty-urls-with-route-bindby');
 });