i18n: keep 並 before 道路, 道歉 and 道理 in zh-Hant

The 並道 → 併道 correction replaced the substring anywhere, so a zh-CN
string where 并 means "and" and 道 starts the next word would turn into
併道路 or 併道歉. It now skips 道路, 道歉 and 道理. The three current
entries (lane merging) convert as before; zh-Hant.json does not change.

docs/translations/zh-Hant.md

@@ -10,7 +10,7 @@ npm run i18n -- --zh-hant        # rewrite zh-Hant.json from zh-CN.json
 
 `npm test` fails when `zh-Hant.json` differs from the conversion of `zh-CN.json`, naming the entry, and `npm run i18n -- --missing zh-Hant` points to this command instead of printing a template.
 
-The command converts with OpenCC `s2tw` ([opencc-js](https://github.com/nk2028/opencc-js), `cn` → `tw`), which changes characters only. Never `s2twp`: it also swaps in Taiwan vocabulary (影片, 伺服器, 載入, 圖示), which this catalog does not use. After the conversion it fixes the characters OpenCC picks wrongly here: 年曆史 → 年歷史, 下遊 → 下游, 並道 → 併道, 發佈 → 發布, 公佈 → 公布, 控制檯 → 控制台, and 周 → 週 where it means a week (1 週/秒). The list is `ZH_HANT_CORRECTIONS` in `scripts/i18n.mjs`; when the conversion picks another wrong character, add the pair there and run the command.
+The command converts with OpenCC `s2tw` ([opencc-js](https://github.com/nk2028/opencc-js), `cn` → `tw`), which changes characters only. Never `s2twp`: it also swaps in Taiwan vocabulary (影片, 伺服器, 載入, 圖示), which this catalog does not use. After the conversion it fixes the characters OpenCC picks wrongly here: 年曆史 → 年歷史, 下遊 → 下游, 並道 → 併道 (not in 並道路, 並道歉, 並道理), 發佈 → 發布, 公佈 → 公布, 控制檯 → 控制台, and 周 → 週 where it means a week (1 週/秒). The list is `ZH_HANT_CORRECTIONS` in `scripts/i18n.mjs`; when the conversion picks another wrong character, add the pair there and run the command.
 
 An entry `zh-CN` keeps in English on purpose needs the same line under `zh-Hant` in `src/i18n/same-as-english.json`.
 

scripts/i18n.mjs

@@ -634,7 +634,8 @@ const ZH_HANT_COMMAND = 'npm run i18n -- --zh-hant';
 const ZH_HANT_CORRECTIONS = [
   ['年曆史', '年歷史'],
   ['下遊', '下游'],
-  ['並道', '併道'],
+  // 併道 is merging lanes; 並 stays when 道 starts 道路, 道歉 or 道理.
+  [/並道(?![路歉理])/g, '併道'],
   ['發佈', '發布'],
   ['公佈', '公布'],
   ['控制檯', '控制台'],

src/i18n/catalog.test.mjs

@@ -54,6 +54,12 @@ test('toZhHant converts characters, not vocabulary, and fixes what s2tw picks wr
   assert.equal(toZhHant('50 年历史'), '50 年歷史');
   assert.equal(toZhHant('发布于 {date}'), '發布於 {date}');
   assert.equal(toZhHant('1 周/秒'), '1 週/秒');
+  assert.equal(
+    toZhHant('{direction}并道，进入 {road}'),
+    '{direction}併道，進入 {road}',
+  );
+  assert.equal(toZhHant('事故并道路封闭'), '事故並道路封閉');
+  assert.equal(toZhHant('已关闭并道歉'), '已關閉並道歉');
 });
 
 test('checkZhHant names each entry that is not the conversion of zh-CN', () => {