- (save-excursion
- (set-buffer gnus-article-buffer)
- (save-restriction
- (let ((buffer-read-only nil)
- (inhibit-point-motion-hooks t)
- (case-fold-search t)
- (alist gnus-header-button-alist)
- entry beg end)
- (article-narrow-to-head)
- (while alist
- ;; Each alist entry.
- (setq entry (car alist)
- alist (cdr alist))
- (goto-char (point-min))
- (while (re-search-forward (car entry) nil t)
- ;; Each header matching the entry.
- (setq beg (match-beginning 0))
- (setq end (or (and (re-search-forward "^[^ \t]" nil t)
- (match-beginning 0))
- (point-max)))
- (goto-char beg)
- (while (re-search-forward (eval (nth 1 entry)) end t)
- ;; Each match within a header.
- (let* ((entry (cdr entry))
- (start (match-beginning (nth 1 entry)))
- (end (match-end (nth 1 entry)))
- (form (nth 2 entry)))
- (goto-char (match-end 0))
- (when (eval form)
- (gnus-article-add-button
- start end (nth 3 entry)
- (buffer-substring (match-beginning (nth 4 entry))
- (match-end (nth 4 entry)))))))
- (goto-char end)))))))
+ (gnus-with-article-headers
+ (let ((alist gnus-header-button-alist)
+ entry beg end)
+ (while alist
+ ;; Each alist entry.
+ (setq entry (pop alist))
+ (goto-char (point-min))
+ (while (re-search-forward (car entry) nil t)
+ ;; Each header matching the entry.
+ (setq beg (match-beginning 0))
+ (setq end (or (and (re-search-forward "^[^ \t]" nil t)
+ (match-beginning 0))
+ (point-max)))
+ (goto-char beg)
+ (while (re-search-forward (eval (nth 1 entry)) end t)
+ ;; Each match within a header.
+ (let* ((entry (cdr entry))
+ (start (match-beginning (nth 1 entry)))
+ (end (match-end (nth 1 entry)))
+ (form (nth 2 entry)))
+ (goto-char (match-end 0))
+ (when (eval form)
+ (gnus-article-add-button
+ start end (nth 3 entry)
+ (buffer-substring (match-beginning (nth 4 entry))
+ (match-end (nth 4 entry)))))))
+ (goto-char end))))))