Add the 'accent_slash' modifier

Might be useful for some math characters.

srcs/juloo.keyboard2/KeyModifier.java

@@ -62,6 +62,8 @@ class KeyModifier
         return maybe_modify_char(k, map_char_arrows(k.char_));
       case KeyValue.MOD_BOX:
         return maybe_modify_char(k, map_char_box(k.char_));
+      case KeyValue.MOD_SLASH:
+        return maybe_modify_char(k, map_char_slash(k.char_));
       default: return k;
     }
   }
@@ -329,4 +331,20 @@ class KeyModifier
       default: return c;
     }
   }
+
+  private static char map_char_slash(char c)
+  {
+    switch (c)
+    {
+      case 'a': return 'ⱥ';
+      case 'c': return 'ȼ';
+      case 'e': return 'ɇ';
+      case 'g': return 'ꞡ';
+      case 'l': return 'ł';
+      case 'n': return 'ꞥ';
+      case 'o': return 'ø';
+      case ' ': return '/';
+      default: return c;
+    }
+  }
 }

srcs/juloo.keyboard2/KeyValue.java

@@ -44,6 +44,7 @@ class KeyValue
   public static final int MOD_ARROWS = -214;
   public static final int MOD_BOX = -215;
   public static final int MOD_OGONEK = -216;
+  public static final int MOD_SLASH = -217;
 
   /** Special value for the [char_] field. */
   public static final char CHAR_NONE = '\0';
@@ -185,6 +186,8 @@ class KeyValue
     addModifierKey("accent_ogonek", "\u0059", MOD_OGONEK, FLAG_KEY_FONT);
     addModifierKey("accent_dot_above", "\u005a", MOD_DOT_ABOVE, FLAG_KEY_FONT);
     addModifierKey("accent_double_aigu", "\u005b", MOD_DOUBLE_AIGU, FLAG_KEY_FONT);
+    addModifierKey("accent_slash", "\134", // Can't write u005c
+        MOD_SLASH, FLAG_KEY_FONT);
     addModifierKey("superscript", "Sup", MOD_SUPERSCRIPT, FLAG_SMALLER_FONT);
     addModifierKey("subscript", "Sub", MOD_SUBSCRIPT, FLAG_SMALLER_FONT);
     addModifierKey("ordinal", "Ord", MOD_ORDINAL, FLAG_SMALLER_FONT);

srcs/special_font/5C.svg

@@ -0,0 +1,10 @@
+<?xml version="1.0" standalone="no"?>
+<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd" >
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" version="1.1" viewBox="-20 0 2068 2048">
+   <path fill="currentColor"
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+</svg>