Ticket #287: multi-press-f-keys.patch

src/key.c

@@ -694 +694 @@
     /* F0 is the same as F10 for out purposes */
     if (c == KEY_F (0))
         c = KEY_F (10);
+    if (c == KEY_F_IMMUTABLE (0))
+        c = KEY_F_IMMUTABLE (10);
 
     /*
      * We are not interested if Ctrl was pressed when entering control
@@ -765 +767 @@
         mod &= ~KEY_M_SHIFT;
     }
 
+    /*
+     * Numerals may require modifilers with some keymaps or on obscure
+     * keyboards (e. g. F4 = Esc Shift+4). We have to ignore all
+     * modifiers while interpreting Esc + Numeral.
+     */
+    if (c >= KEY_F_IMMUTABLE (1) && c <= KEY_F_IMMUTABLE (10)) {
+        c += KEY_F (0) - KEY_F_IMMUTABLE (0);
+        mod &= ~KEY_M_MASK;
+    }
+
     if (!alternate_plus_minus)
         switch (c) {
         case KEY_KP_ADD:
@@ -917 +929 @@
                 this = this->next;
             else {
                 if (parent != NULL && parent->action == MCKEY_ESCAPE) {
-
                     /* Convert escape-digits to F-keys */
                     if (isdigit(c))
-                        c = KEY_F (c - '0');
+                        c = KEY_F_IMMUTABLE (c - '0');
                     else if (c == ' ')
                         c = ESC_CHAR;
                     else

src/myslang.h

@@ -29 +29 @@
 };
 
 #define KEY_F(x) (1000+x)
+#define KEY_F_IMMUTABLE(x) (970+x)
 
 #define ACS_VLINE SLSMG_VLINE_CHAR
 #define ACS_HLINE SLSMG_HLINE_CHAR