+2014-05-27 Stefan Monnier <monnier@iro.umontreal.ca>
+
+ * emacs-lisp/byte-opt.el (byte-optimize-binary-predicate): Don't assume
+ there can't be more than 2 arguments (bug#17584).
+
2014-05-27 Glenn Morris <rgm@gnu.org>
* simple.el (filter-buffer-substring-functions)
(defun byte-optimize-binary-predicate (form)
- (if (macroexp-const-p (nth 1 form))
- (if (macroexp-const-p (nth 2 form))
- (condition-case ()
- (list 'quote (eval form))
- (error form))
- ;; This can enable some lapcode optimizations.
- (list (car form) (nth 2 form) (nth 1 form)))
- form))
+ (cond
+ ((or (not (macroexp-const-p (nth 1 form)))
+ (nthcdr 3 form)) ;; In case there are more than 2 args.
+ form)
+ ((macroexp-const-p (nth 2 form))
+ (condition-case ()
+ (list 'quote (eval form))
+ (error form)))
+ (t ;; This can enable some lapcode optimizations.
+ (list (car form) (nth 2 form) (nth 1 form)))))
(defun byte-optimize-predicate (form)
(let ((ok t)