beep when we get an unhandled shortcut or toggle, as Pico does

git-svn-id: svn://svn.savannah.gnu.org/nano/trunk/nano@3616 35c25a1d-7b9e-4130-9fde-d3aeb78583b8

ChangeLog

@@ -98,8 +98,8 @@ CVS code -
 	  do_scroll_down(), do_input(), do_search(), do_research(), and
 	  do_delete(). (DLR)
 	- Ignore unhandled meta key sequences, function keys, and escape
-	  sequences, and indicate it on the statusbar when we get an
-	  unhandled shortcut or toggle, as Pico does.  To get this to
+	  sequences, indicate it on the statusbar, and beep when we get
+	  an unhandled shortcut or toggle, as Pico does.  To get this to
 	  work properly, add a shortcut for moving to the next
 	  search/replace string.  New function is_ascii_cntrl_char();
 	  changes to shortcut_init(), do_input(), do_statusbar_input(),

src/nano.c

@@ -1311,6 +1311,7 @@ int do_input(bool *meta_key, bool *func_key, bool *s_or_t, bool
 	if (is_ascii_cntrl_char(input) || *meta_key == TRUE ||
 		*func_key == TRUE) {
 	    statusbar(_("Unknown Command"));
+	    beep();
 	    *meta_key = FALSE;
 	    *func_key = FALSE;
 	    input = ERR;

src/prompt.c

@@ -111,6 +111,7 @@ int do_statusbar_input(bool *meta_key, bool *func_key, bool *s_or_t,
     if (*s_or_t == FALSE) {
 	if (is_ascii_cntrl_char(input) || *meta_key == TRUE ||
 		*func_key == TRUE) {
+	    beep();
 	    *meta_key = FALSE;
 	    *func_key = FALSE;
 	    input = ERR;

src/winio.c

@@ -1158,8 +1158,10 @@ int parse_escape_seq_kbinput(int kbinput)
 
     /* If the escape sequence is unrecognized and not ignored, throw it
      * out, and indicate this on the statusbar. */
-    if (retval == ERR && !ignore_seq)
+    if (retval == ERR && !ignore_seq) {
 	statusbar(_("Unknown Command"));
+	beep();
+    }
 
     free(seq);