input: report keystroke M-[ as being unbindable instead of just unbound

b3fbb7c7 · Benno Schulenberg · 225203d4 · b3fbb7c7
Commit b3fbb7c7 authored 8 years ago by Benno Schulenberg
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with 4 additions and 3 deletions
+4 -3
--- a/src/nano.c
+++ b/src/nano.c
@@ -1555,9 +1555,10 @@ void unbound_key(int code)
    if (func_key)
 	statusline(ALERT, _("Unbound key"));
    else if (meta_key) {
-	if (0x60 < code && code < 0x7B)
-	    code -= 0x20;
-	statusline(ALERT, _("Unbound key: M-%c"), code);
+	if (code == '[')
+	    statusline(ALERT, _("Unbindable key: M-["));
+	else
+	    statusline(ALERT, _("Unbound key: M-%c"), toupper(code));
    } else if (code < 0x20)
 	statusline(ALERT, _("Unbound key: ^%c"), code + 0x40);
    else