Re: rmail and quoted-printable

[Kaloian Doganov <kaloian@doganov.org>]

Xavier Maillard <zedek@gnu.org> writes:

    I can't find an elegant solution to deal with all these mails sent
    with QP encoded body.

This doesn't qualify as 'elegant', but I've used this function, which
detects and handles both base64 and quoted-printable:

(defun mime-decode ()
  (interactive)
  (save-excursion
	(re-search-forward "^--[^\n]+")
	(beginning-of-line)
	(let ((string (buffer-substring-no-properties
				   (point) (save-excursion (end-of-line) (point))))
		  (buf (current-buffer))
		  start end meta-start)
	  (setq meta-start (point))
	  (search-forward "\n\n")
	  (setq start (point))
	  (search-forward string)
	  (beginning-of-line)
	  (setq end (point))
	  (let ((source-buffer (current-buffer))
			(target-buffer (get-buffer-create "*foo*")))
		(save-excursion
		  (set-buffer target-buffer)
		  (erase-buffer))
		(append-to-buffer target-buffer start end)
		(save-excursion
		  (goto-char meta-start)
		  (search-forward "\n\n" nil t)
		  (let ((mime-charset
				 (if (and rmail-decode-mime-charset
						  (save-excursion
							(let ((case-fold-search t))
							  (re-search-backward
							   rmail-mime-charset-pattern
							   meta-start t))))
					 (intern (downcase (match-string 1)))))
				(mime-encoding
				 (save-excursion
				   (if (let ((case-fold-search t))
						 (re-search-backward
						  "^content-transfer-encoding:\\(\n?[\t ]\\)*\\([-a-z0-9]+\\)\\(\n?[\t ]\\)*"
						  meta-start t))
					   (intern (downcase (match-string 2)))
					 nil))))					 
			(message "Detected charset: %s, encoding: %s" mime-charset mime-encoding)
			(save-excursion
			  (set-buffer target-buffer)
			  (cond ((string= mime-encoding "base64")
					 (base64-decode-region (point-min) (point-max)))
					((string= mime-encoding "quoted-printable")
					 (quoted-printable-decode-region (point-min) (point-max))))
			  (rmail-decode-region (point-min) (point-max) mime-charset)
			  (goto-char (point-min))))
		  (switch-to-buffer target-buffer))))))