(mail-mode): Let all-white lines separate paragraphs.

diff --git a/lisp/mail/sendmail.el b/lisp/mail/sendmail.el
index b278e0cff54bae04f419f3ba00f862e762f4d98f..5432797eb2cb0c0911639939217429630346b2e9 100644 (file)
--- a/lisp/mail/sendmail.el
+++ b/lisp/mail/sendmail.el
@@ -347,7 +347,7 @@ C-c C-v  mail-sent-via (add a Sent-via field for each To or CC)."
   ;; Lines containing just >= 3 dashes, perhaps after whitespace,
   ;; are also sometimes used and should be separators.
   (setq paragraph-start (concat (regexp-quote mail-header-separator)
-                               "\\|$\\|" page-delimiter))
+                               "\\|[ \t]*$\\|" page-delimiter))
   (setq paragraph-separate paragraph-start)
   (run-hooks 'text-mode-hook 'mail-mode-hook))