* gdbtk.tcl (gdb_prompt): Set this early on.

(create_command_window): Use gdb_prompt rather than "(gdb) ".
	(gdbtk_tcl_preloop): Proc executed just prior to Tk main loop.
	(tclsh): If an evaluation window already exists, just bring it
	to the front instead of trying to create another.
	* gdbtk.c (tk_command_loop): New function.
	(gdbtk_init): Call tk_command_loop rather than Tk_MainLoop.

gdb/ChangeLog

@@ -1,4 +1,14 @@
 start-sanitize-gdbtk
+Thu May 16 19:20:29 1996  Fred Fish  <fnf@fishfood.ninemoons.com>
+
+	* gdbtk.tcl (gdb_prompt): Set this early on.
+	(create_command_window): Use gdb_prompt rather than "(gdb) ".
+	(gdbtk_tcl_preloop): Proc executed just prior to Tk main loop.
+	(tclsh): If an evaluation window already exists, just bring it
+	to the front instead of trying to create another.
+	* gdbtk.c (tk_command_loop): New function.
+	(gdbtk_init): Call tk_command_loop rather than Tk_MainLoop.
+
 Thu May 16 16:16:35 1996  Fred Fish  <fnf@cygnus.com>
 
 	* gdbtk.tcl (evaluate_tcl_command, tclsh):  New functions that

gdb/gdbtk.c

@@ -1111,6 +1111,16 @@ gdbtk_call_command (cmdblk, arg, from_tty)
     (*cmdblk->function.cfunc)(arg, from_tty);
 }
 
+/* This function is called instead of gdb's internal command loop.  This is the
+   last chance to do anything before entering the main Tk event loop. */
+
+static void
+tk_command_loop ()
+{
+  Tcl_Eval (interp, "gdbtk_tcl_preloop");
+  Tk_MainLoop ();
+}
+
 static void
 gdbtk_init ()
 {
@@ -1160,7 +1170,7 @@ gdbtk_init ()
   Tcl_CreateCommand (interp, "gdb_get_breakpoint_info", call_wrapper,
 		     gdb_get_breakpoint_info, NULL);
 
-  command_loop_hook = Tk_MainLoop;
+  command_loop_hook = tk_command_loop;
   print_frame_info_listing_hook = null_routine;
   query_hook = gdbtk_query;
   flush_hook = gdbtk_flush;

gdb/gdbtk.tcl

@@ -28,6 +28,7 @@ set line_numbers 1
 set breakpoint_file(-1) {[garbage]}
 set disassemble_with_source nosource
 set expr_update_list(0) 0
+set gdb_prompt "(gdb) "
 
 set debug_interface 0
 
@@ -2291,6 +2292,7 @@ proc find_completion {cmd completions} {
 proc create_command_window {} {
 	global command_line
 	global saw_tab
+	global gdb_prompt
 
 	set saw_tab 0
 	if {[winfo exists .cmd]} {raise .cmd ; return}
@@ -2340,7 +2342,7 @@ proc create_command_window {} {
 	  # %W insert end $result
 	  set command_line {}
 	  # update_ptr
-	  %W insert end "(gdb) "
+	  %W insert end "$gdb_prompt"
 	  %W see end
 	  break
 	}
@@ -2391,7 +2393,7 @@ proc create_command_window {} {
 	    if {[regexp ".* " $command_line prefix]} {
 	      regsub -all $prefix $choices {} choices
 	    }
-	    %W insert end "\n[join $choices { }]\n(gdb) $command_line"
+	    %W insert end "\n[join $choices { }]\n$gdb_prompt$command_line"
 	    %W see end
 	  }
 	  break
@@ -3128,6 +3130,9 @@ proc evaluate_tcl_command { twidget } {
 proc tclsh {} {
     global tcl_prompt
 
+    # If another evaluation window already exists, just bring it to the front.
+    if {[winfo exists .eval]} {raise .eval ; return}
+
     # Create top level frame with scrollbar and text widget.
     toplevel .eval
     wm title .eval "Tcl Evaluation"
@@ -3156,6 +3161,14 @@ proc tclsh {} {
     bindtags .eval.text {.eval.text Text all}
 }
 
+# This proc is executed just prior to falling into the Tk main event loop.
+proc gdbtk_tcl_preloop {} {
+    global gdb_prompt
+    .cmd.text insert end "$gdb_prompt"
+    .cmd.text see end
+    update
+}
+
 # FIXME need to handle mono here.  In Tk4 that is more complicated.
 set highlight "-background red2 -borderwidth 2 -relief sunken"