 
 (defconst rdebug-traceback-line-re
   "^[ \t]+from \\([^:]+\\):\\([0-9]+\\)\\(in `.*'\\)?"
-  "Regular expression that describes tracebacks.")
+  "Regular expression that describes a Ruby traceback line.")
 
 (defun rdebug-rdebugtrack-overlay-arrow (activation)
   "Activate or de arrow at beginning-of-line in current buffer."

		   (+ fn-start (match-beginning 1)) (+ fn-start (match-end 1))
		   (list 'face font-lock-function-name-face
			 'font-lock-face font-lock-function-name-face))))))
	;; remove initial ###  or -->
	(beginning-of-line)
	(delete-char 3)
        (forward-line)

    (gud-def gud-where   "where"
	     "T" "Show stack trace.")
    (local-set-key "\C-i" 'gud-gdb-complete-command)
    
    ;; Update GUD menu bar
    (define-key gud-menu-map [args]      '("Show arguments of current stack" . 
