From f0b4f2ee6bbef2ea4596568703e1f267eb4a46aa Mon Sep 17 00:00:00 2001 From: Lars Ingebrigtsen Date: Sun, 20 Feb 2022 13:41:57 +0100 Subject: [PATCH] Ensure that `mail-send' breaks too-long lines * lisp/mail/sendmail.el (mail-send): Ensure that we fold too-long lines when using `sendmail-user-agent' (bug#53412). --- lisp/mail/sendmail.el | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/lisp/mail/sendmail.el b/lisp/mail/sendmail.el index 76c3baf4727..0d3eeecd8c8 100644 --- a/lisp/mail/sendmail.el +++ b/lisp/mail/sendmail.el @@ -955,7 +955,10 @@ the user from the mailer." (error "Invalid header line (maybe a continuation line lacks initial whitespace)")) (forward-line 1))) (goto-char opoint) - (when mail-encode-mml + (when (or mail-encode-mml + ;; When we have long lines, we have to MIME encode + ;; to get line folding. + (mm-long-lines-p 1000)) (mml-to-mime) (setq mail-encode-mml nil)) (run-hooks 'mail-send-hook) -- 2.39.5