More long-press accents; number-row letters stay choices in full mode

- Template alternates cover Central/Eastern European, Turkish, Romanian,
  Baltic, Nordic and Esperanto letters, at most 11 per key
- Only letters on the letter rows are skipped as choices, so sk ť, ľ, š…
  are offered on their base letter in full mode too

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

layouts/template.json

@@ -2,18 +2,24 @@
     "id": "template",
     "name": "Template",
     "alternates": {
-        "a": ["á", "à", "â", "ä", "æ", "ã", "å", "ā"],
-        "c": ["ç", "ć", "č"],
-        "d": ["ð"],
-        "e": ["é", "è", "ê", "ë", "ē", "ė", "ę"],
-        "i": ["í", "ì", "î", "ï", "ī", "į"],
-        "l": ["ł"],
-        "n": ["ñ", "ń"],
-        "o": ["ó", "ò", "ô", "ö", "õ", "ø", "œ", "ō"],
-        "s": ["ß", "ś", "š"],
-        "t": ["þ"],
-        "u": ["ú", "ù", "û", "ü", "ū"],
-        "y": ["ý", "ÿ"],
+        "a": ["á", "à", "â", "ä", "æ", "ã", "å", "ā", "ą", "ă", "ǎ"],
+        "c": ["ç", "ć", "č", "ĉ", "ċ"],
+        "d": ["ď", "đ", "ð"],
+        "e": ["é", "è", "ê", "ë", "ē", "ė", "ę", "ě", "ẽ"],
+        "g": ["ğ", "ĝ", "ģ", "ġ"],
+        "h": ["ĥ", "ħ"],
+        "i": ["í", "ì", "î", "ï", "ī", "į", "ı", "ǐ"],
+        "j": ["ĵ"],
+        "k": ["ķ"],
+        "l": ["ł", "ľ", "ĺ", "ļ", "ŀ"],
+        "n": ["ñ", "ń", "ň", "ņ", "ŋ"],
+        "o": ["ó", "ò", "ô", "ö", "õ", "ø", "œ", "ō", "ő", "ǒ"],
+        "r": ["ŕ", "ř"],
+        "s": ["ß", "ś", "š", "ş", "ș", "ŝ"],
+        "t": ["ť", "ţ", "ț", "þ"],
+        "u": ["ú", "ù", "û", "ü", "ū", "ů", "ű", "ų", "ŭ", "ǔ"],
+        "w": ["ŵ"],
+        "y": ["ý", "ÿ", "ŷ"],
         "z": ["ž", "ź", "ż"]
     },
     "sections": [

src/layout/LayoutBuilder.cpp

@@ -101,14 +101,15 @@ Row expandPlaceholders(const Row &row, const KeymapKeys &keymap)
     return result;
 }
 
-// Long-press choices per letter: the keymap's letters that have no key here
-// first (they're what this language types), then the template's.
+// Long-press choices per letter: the keymap's letters that have no letter key
+// first (they're what this language types), then the template's. Letters on the
+// number row (sk: ť) stay choices in full mode too: they're out of the way there.
 void addAlternates(Layer &layer, const Layout &tmpl, const KeymapKeys &keymap)
 {
     QSet<QString> onKeys;
-    for (const Row &row : layer.rows) {
-        for (const KeyDef &key : row)
-            onKeys << key.label << key.shifted.toLower();
+    for (int row = 0; row < 3; ++row) {
+        for (const KeyDef &key : letterKeys(keymap, row, {}))
+            onKeys << key.label;
     }
 
     QHash<QString, QStringList> choices;

tests/tst_layoutbuilder.cpp

@@ -132,8 +132,9 @@ private Q_SLOTS:
         QCOMPARE(acute.deadShifted, quint32(XKB_KEY_dead_caron));
         QCOMPARE(letterKey(sk, u"ô"_s).shifted, u"\""); // as the physical key
         QCOMPARE(letterKey(sk, u"ľ"_s).shifted, u"2");
-        // ľ has its own key now, so it's not a long-press choice on l.
-        QVERIFY(!letterKey(sk, u"l"_s).alternates.contains(u"ľ"_s));
+        // Number-row letters are still long-press choices on their base letter.
+        QCOMPARE(letterKey(sk, u"t"_s).alternates.first(), u"ť");
+        QCOMPARE(letterKey(sk, u"l"_s).alternates.first(), u"ľ");
     }
 
     void noPlaceholdersRemain()