bug#15285: url-data not working for base64-encoded data

[Glenn Morris]

Version: 24.4

Thanks for the clear report.
(I needed to add a "(require 'mm-view)" to the test-case).

I think this fixes it:

*** lisp/url/url-misc.el        2013-01-02 16:13:04 +0000
--- lisp/url/url-misc.el        2013-09-16 21:28:11 +0000
***************
*** 89,107 ****
      (save-excursion
        (if (not (string-match "\\([^,]*\\)?," desc))
          (error "Malformed data URL: %s" desc)
!       (setq mediatype (match-string 1 desc))
        (if (and mediatype (string-match ";base64\\'" mediatype))
            (setq mediatype (substring mediatype 0 (match-beginning 0))
                  encoding "base64"))
        (if (or (null mediatype)
                (eq ?\; (aref mediatype 0)))
!         (setq mediatype (concat "text/plain" mediatype)))
!       (setq data (url-unhex-string (substring desc (match-end 0)))))
        (set-buffer (generate-new-buffer " *url-data*"))
        (mm-disable-multibyte)
        (insert (format "Content-Length: %d\n" (length data))
              "Content-Type: " mediatype "\n"
!             "Content-Encoding: " encoding "\n"
              "\n")
        (if data (insert data))
        (current-buffer))))
--- 88,106 ----
      (save-excursion
        (if (not (string-match "\\([^,]*\\)?," desc))
          (error "Malformed data URL: %s" desc)
!       (setq mediatype (match-string 1 desc)
!             data (url-unhex-string (substring desc (match-end 0))))
        (if (and mediatype (string-match ";base64\\'" mediatype))
            (setq mediatype (substring mediatype 0 (match-beginning 0))
                  encoding "base64"))
        (if (or (null mediatype)
                (eq ?\; (aref mediatype 0)))
!         (setq mediatype (concat "text/plain" mediatype))))
        (set-buffer (generate-new-buffer " *url-data*"))
        (mm-disable-multibyte)
        (insert (format "Content-Length: %d\n" (length data))
              "Content-Type: " mediatype "\n"
!             "Content-Transfer-Encoding: " encoding "\n"
              "\n")
        (if data (insert data))
        (current-buffer))))