http://www.midnight-commander.org/ticket/287
Index: lib/tty/key.c
===================================================================
--- lib/tty/key.c.orig	2010-07-07 17:32:15.521891000 +0200
+++ lib/tty/key.c	2010-07-07 17:32:15.897891000 +0200
@@ -897,10 +897,13 @@ correct_key_code (int code)
         mod = 0;
     }
 
-    /* F0 is the same as F10 for out purposes */
+    /* F0 is the same as F10 for our 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
      * characters, so assume that it was.  When checking for such keys,
@@ -965,6 +968,16 @@ correct_key_code (int code)
         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:
@@ -1613,7 +1626,7 @@ get_key_code (int no_delay)
                 if ((parent != NULL) && (parent->action == MCKEY_ESCAPE)) {
                     /* Convert escape-digits to F-keys */
                     if (g_ascii_isdigit (c))
-                        c = KEY_F (c - '0');
+                        c = KEY_F_IMMUTABLE (c - '0');
                     else if (c == ' ')
                         c = ESC_CHAR;
                     else
Index: lib/tty/tty-slang.h
===================================================================
--- lib/tty/tty-slang.h.orig	2010-07-05 21:12:51.000000000 +0200
+++ lib/tty/tty-slang.h	2010-07-07 17:33:45.962779000 +0200
@@ -16,6 +16,7 @@ enum {
 };
 
 #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