Disable combining diacritics on some keys

Disable combining diacritics on digit, latin punctuations and currency
symbols

srcs/compose/accent_aigu.json

@@ -11,15 +11,5 @@
   "u": "ú",
   "y": "ý",
   "z": "ź",
-  "ü": "ǘ",
-  "j": "j\u0301",
-  "у": "у\u0301",
-  "е": "е\u0301",
-  "а": "а\u0301",
-  "о": "о\u0301",
-  "и": "и\u0301",
-  "ы": "ы\u0301",
-  "э": "э\u0301",
-  "ю": "ю\u0301",
-  "я": "я\u0301"
+  "ü": "ǘ"
 }

srcs/compose/accent_double_aigu.json

@@ -1,10 +1,5 @@
 {
   "o": "ő",
   "u": "ű",
-  " ": "˝",
-  "a": "a\u030b",
-  "e": "e\u030b",
-  "i": "i\u030b",
-  "m": "m\u030b",
-  "y": "y\u030b"
+  " ": "˝"
 }

srcs/juloo.keyboard2/KeyModifier.java

@@ -2,6 +2,7 @@ package juloo.keyboard2;
 
 import android.view.KeyCharacterMap;
 import android.view.KeyEvent;
+import java.util.Arrays;
 import java.util.HashMap;
 
 public final class KeyModifier
@@ -58,7 +59,7 @@ public final class KeyModifier
       case GESTURE: return apply_gesture(k);
       case SHIFT: return apply_shift(k);
       case GRAVE: return apply_compose_or_dead_char(k, ComposeKeyData.accent_grave, '\u02CB');
-      case AIGU: return apply_compose_or_dead_char(k, ComposeKeyData.accent_aigu, '\u00B4');
+      case AIGU: return apply_diacritics(k, ComposeKeyData.accent_aigu, '\u00B4', '\u0301');
       case CIRCONFLEXE: return apply_compose_or_dead_char(k, ComposeKeyData.accent_circonflexe, '\u02C6');
       case TILDE: return apply_compose_or_dead_char(k, ComposeKeyData.accent_tilde, '\u02DC');
       case CEDILLE: return apply_compose_or_dead_char(k, ComposeKeyData.accent_cedille, '\u00B8');
@@ -69,7 +70,7 @@ public final class KeyModifier
       case OGONEK: return apply_compose_or_dead_char(k, ComposeKeyData.accent_ogonek, '\u02DB');
       case DOT_ABOVE: return apply_compose_or_dead_char(k, ComposeKeyData.accent_dot_above, '\u02D9');
       case BREVE: return apply_dead_char(k, '\u02D8');
-      case DOUBLE_AIGU: return apply_compose(k, ComposeKeyData.accent_double_aigu);
+      case DOUBLE_AIGU: return apply_diacritics(k, ComposeKeyData.accent_double_aigu, '\0', '\u030b');
       case ORDINAL: return apply_compose(k, ComposeKeyData.accent_ordinal);
       case SUPERSCRIPT: return apply_compose(k, ComposeKeyData.accent_superscript);
       case SUBSCRIPT: return apply_compose(k, ComposeKeyData.accent_subscript);
@@ -131,45 +132,53 @@ public final class KeyModifier
     return k;
   }
 
-  /** Apply the given compose state or fallback to the dead_char. */
-  private static KeyValue apply_compose_or_dead_char(KeyValue k, int state, char dead_char)
+  /** Apply the following mapping, in this order, and stop at the first that
+      changes the key.
+
+      - The compose state, unless it is [0].
+      - The dead char, unless it is ['\0'].
+      - The combining diacritic, unless it is ['\0'].
+        This is not done if the initial key matches [combining_disabled]. */
+  private static KeyValue apply_diacritics(KeyValue k, int state, char dead_char, char combining)
   {
     switch (k.getKind())
     {
       case Char:
         char c = k.getChar();
+        if (state != 0)
+        {
           KeyValue r = ComposeKey.apply(state, c);
           if (r != null)
             return r;
         }
-    return apply_dead_char(k, dead_char);
-  }
-
-  private static KeyValue apply_compose(KeyValue k, int state)
+        if (dead_char != '\0')
         {
-    switch (k.getKind())
-    {
-      case Char:
-        KeyValue r = ComposeKey.apply(state, k.getChar());
-        if (r != null)
-          return r;
-    }
-    return k;
-  }
-
-  private static KeyValue apply_dead_char(KeyValue k, char dead_char)
-  {
-    switch (k.getKind())
-    {
-      case Char:
-        char c = k.getChar();
           char modified = (char)KeyCharacterMap.getDeadChar(dead_char, c);
           if (modified != 0 && modified != c)
             return KeyValue.makeStringKey(String.valueOf(modified));
         }
+        if (combining != '\0' && !combining_disabled(c))
+          return KeyValue.makeStringKey(new String(new char[]{ c, combining }));
+        break;
+    }
     return k;
   }
 
+  private static KeyValue apply_compose(KeyValue k, int state)
+  {
+    return apply_diacritics(k, state, '\0', '\0');
+  }
+
+  private static KeyValue apply_dead_char(KeyValue k, char dead_char)
+  {
+    return apply_diacritics(k, 0, dead_char, '\0');
+  }
+
+  private static KeyValue apply_compose_or_dead_char(KeyValue k, int state, char dead_char)
+  {
+    return apply_diacritics(k, state, dead_char, '\0');
+  }
+
   private static KeyValue apply_shift(KeyValue k)
   {
     if (_modmap != null)
@@ -806,4 +815,18 @@ public final class KeyModifier
     }
     return KeyValue.makeHangulFinal(precomposed, final_idx);
   }
+
+  /** Characters for which combining diacritics should not be appeneded. */
+  private static final char[] combining_disabled_chars =
+    "0123456789@`!\"#$%&'()*:+;[{,<\\|-=]}.>^~/?_ \t\n¡¿«»‹›‘’“”‚„–—¬‰≈°…·¦¶‡∙€£₹¥¢₽₱₴₿".toCharArray();
+
+  static
+  {
+    Arrays.sort(combining_disabled_chars);
+  }
+
+  private static boolean combining_disabled(char c)
+  {
+    return (Arrays.binarySearch(combining_disabled_chars, c) >= 0);
+  }
 }