(debugger-setup-buffer): When an eval-buffer frame was reading from a buffer,

insert indication of the buffer position.
(debugger-frame-number): Ignore ;;;-comment lines in backtrace.

1 files changed, 9 insertions, 0 deletions

diff --git a/lisp/emacs-lisp/debug.el b/lisp/emacs-lisp/debug.el
index 028344612e7..aecfb93a3c5 100644
--- a/lisp/emacs-lisp/debug.el
+++ b/lisp/emacs-lisp/debug.el
@@ -272,6 +272,13 @@ That buffer should be current already."
                     (cdr debugger-args) debugger-args)
                 (current-buffer))
          (insert ?\n)))
+  (when (re-search-forward "^  eval-buffer(" nil t)
+    (end-of-line)
+    (insert (format "\n  ;;; Reading at buffer position %d"
+                    (let ((level (+ (debugger-frame-number)
+                                    debugger-frame-offset -4)))
+                      (with-current-buffer (nth 2 (backtrace-frame level))
+                        (point))))))
   (debugger-make-xrefs))
 
 (defun debugger-make-xrefs (&optional buffer)
@@ -423,6 +430,8 @@ will be used, such as in a debug on exit from a frame."
                  (forward-sexp 2))
                (forward-line 1)
                (<= (point) opoint))
+        (if (looking-at " *;;;")
+            (forward-line 1))
         (setq count (1+ count)))
       count)))