gdb: New 'tui enable' and 'tui disable' commands.

Add new commands to specifically enable and disable tui mode.  This is
in addition to the readline bindings, but might be easier for a user to
discover if they accidentally end up in tui mode.

gdb/ChangeLog:

	* NEWS: Mention 'tui enable' and 'tui disable'.
	* tui/tui.c (tui_enable_command): New function.
	(tui_disable_command): New function.
	(_initialize_tui): New function.

gdb/doc/ChangeLog:

	* gdb.texinfo (TUI): Include 'tui enable' in the introduction.
	(TUI Commands): Add 'tui enable' and 'tui disable' details.

1 files changed, 34 insertions, 0 deletions

diff --git a/gdb/tui/tui.c b/gdb/tui/tui.c
index 308e7ae..838471d 100644
--- a/gdb/tui/tui.c
+++ b/gdb/tui/tui.c
@@ -540,6 +540,22 @@ tui_disable (void)
   tui_update_gdb_sizes ();
 }
 
+/* Command wrapper for enabling tui mode.  */
+
+static void
+tui_enable_command (char *args, int from_tty)
+{
+  tui_enable ();
+}
+
+/* Command wrapper for leaving tui mode.  */
+
+static void
+tui_disable_command (char *args, int from_tty)
+{
+  tui_disable ();
+}
+
 void
 strcat_to_buf (char *buf, int buflen, 
 	       const char *item_to_add)
@@ -652,3 +668,21 @@ tui_get_command_dimension (unsigned int *width,
   *height = TUI_CMD_WIN->generic.height;
   return 1;
 }
+
+/* Provide a prototype to silence -Wmissing-prototypes.  */
+extern initialize_file_ftype _initialize_tui;
+
+void
+_initialize_tui (void)
+{
+  struct cmd_list_element **tuicmd;
+
+  tuicmd = tui_get_cmd_list ();
+
+  add_cmd ("enable", class_tui, tui_enable_command,
+	   _("Enable TUI display mode."),
+	   tuicmd);
+  add_cmd ("disable", class_tui, tui_disable_command,
+	   _("Disable TUI display mode."),
+	   tuicmd);
+}