(debug): Make *Backtrace* buffer writable.

diff --git a/lisp/emacs-lisp/debug.el b/lisp/emacs-lisp/debug.el
index 0e6e0ef97654b37c3e61c1a84caff0ce1ea46e80..5fce9e44abcbaf41591f7623b6b8252cbdbeb4c5 100644 (file)
--- a/lisp/emacs-lisp/debug.el
+++ b/lisp/emacs-lisp/debug.el
@@ -138,6 +138,7 @@ first will be printed into the backtrace buffer."
          (save-excursion
            (save-window-excursion
              (pop-to-buffer debugger-buffer)
+             (setq buffer-read-only nil)
              (erase-buffer)
              (set-buffer-multibyte nil)
              (let ((standard-output (current-buffer))