+(defmacro gnus-summary-iterate (arg &rest forms)
+ "Iterate over the process/prefixed articles and do FORMS.
+ARG is the interactive prefix given to the command. FORMS will be
+executed with point over the summary line of the articles."
+ (let ((articles (make-symbol "gnus-summary-iterate-articles")))
+ `(let ((,articles (gnus-summary-work-articles ,arg)))
+ (while ,articles
+ (gnus-summary-goto-subject (car ,articles))
+ ,@forms))))
+
+(put 'gnus-summary-iterate 'lisp-indent-function 1)
+(put 'gnus-summary-iterate 'edebug-form-spec '(form body))
+