Merge from emacs-24; up to 2012-12-14T15:22:24Z!monnier@iro.umontreal.ca

[bpt/emacs.git] / lisp / subr.el

diff --git a/lisp/subr.el b/lisp/subr.el
index 11e882d..31cbb9a 100644 (file)
--- a/lisp/subr.el
+++ b/lisp/subr.el
@@ -3367,16 +3367,17 @@ If BODY finishes, `while-no-input' returns whatever value BODY produced."
               (progn ,@body)))))))
 
 (defmacro condition-case-unless-debug (var bodyform &rest handlers)
-  "Like `condition-case' except that it does not catch anything when debugging.
-More specifically if `debug-on-error' is set, then it does not catch any signal."
+  "Like `condition-case' except that it does not prevent debugging.
+More specifically if `debug-on-error' is set then the debugger will be invoked
+even if this catches the signal."
   (declare (debug condition-case) (indent 2))
-  (let ((bodysym (make-symbol "body")))
-    `(let ((,bodysym (lambda () ,bodyform)))
-       (if debug-on-error
-           (funcall ,bodysym)
-         (condition-case ,var
-             (funcall ,bodysym)
-           ,@handlers)))))
+  `(condition-case ,var
+       ,bodyform
+     ,@(mapcar (lambda (handler)
+                 `((debug ,@(if (listp (car handler)) (car handler)
+                              (list (car handler))))
+                   ,@(cdr handler)))
+               handlers)))
 
 (define-obsolete-function-alias 'condition-case-no-debug
   'condition-case-unless-debug "24.1")
@@ -3975,12 +3976,13 @@ the number of frames to skip (minus 1).")
   ;; "static" variables.
   (let ((sym (make-symbol "base-index")))
     `(progn
-       (defvar ,sym
+       (defvar ,sym)
+       (unless (boundp ',sym)
          (let ((i 1))
            (while (not (eq (indirect-function (nth 1 (backtrace-frame i)) t)
                            (indirect-function 'called-interactively-p)))
              (setq i (1+ i)))
-           i))
+           (setq ,sym i)))
        ;; (unless (eq (nth 1 (backtrace-frame ,sym)) 'called-interactively-p)
        ;;   (error "called-interactively-p: %s is out-of-sync!" ,sym))
        (backtrace-frame (+ ,sym ,n)))))