GDS usability: operation without a mouse

Derek Peschel provided this patch and described it as follows.

"Most of the time I use Terminal in OS X, rather than xterm.  I also don't
bother with the GUI versions of Emacs.  So unfortunately I have no mouse
support in Emacs.  Also the system I'm testing Guile on thinks my terminal
doesn't support color and I haven't fixed it yet.  The attached patch makes
GDS more usable for me.

"With no mouse, the "[click here to show error stack]" design is very
inconvenient.  You added a C-M (return) binding at some point.  I copied
that, but I also changed the message to show it.  And I made the return
work when the cursor is after the right bracket."

* emacs/gds-scheme.el (gds-display-results): Make "click here" message
  more helpful for people without mice.  Also extend text properties
  so that a RET key press works at the end of that line.

THANKS

@@ -85,6 +85,7 @@ For fixes or providing information which led to a fix:
 	  Peter O'Gorman
          Pieter Pareit
            Jack Pavlovsky
+          Derek Peschel
            Arno Peters
 	    Ron Peterson
           David Pirotte

emacs/gds-scheme.el

@@ -424,11 +424,13 @@ through the code."
 		    (map (make-sparse-keymap)))
 		(define-key map [mouse-1] 'gds-show-last-stack)
 		(define-key map "\C-m" 'gds-show-last-stack)
-		(insert "[click here to show error stack]")
+		(insert "[click here (or RET) to show error stack]")
 		(add-text-properties beg (point)
 				     (list 'keymap map
 					   'mouse-face 'highlight))
-		(insert "\n")))
+		(insert "\n")
+		(add-text-properties (1- (point)) (point)
+				     (list 'keymap map))))
 	  (goto-char (point-min))
 	  (gds-associate-buffer client))
 	(pop-to-buffer buf)