On Mon, Mar 15, 2010 at 4:47 PM, Faré <fahree@gmail.com> wrote:

(defmethod output-files :around ((op operation) (c component))
"Translate output files, unless asked not to"
(multiple-value-bind (files fixedp) (call-next-method)
(if fixedp
files
(mapcar #'apply-output-translations files))))

What about this:

(defmethod output-files :around ((op operation) (c component))
"Translate output files, unless asked not to"
(values
   (multiple-value-bind (files fixedp) (call-next-method)
   (if fixedp
   files
   (mapcar #'apply-output-translations files)))
   t))

It has the advantage that the :AROUND method also follows the API and other functions calling OUTPUT-FILES get to know that the paths are now fixed.

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