Re: Q: prevent Emacs from sending mail with no subject

[Kin Cho]

Try this bit of elisp:

(defadvice mail-send (before check-for-null-subject activate)
  (or (mail-subject) (error "No subject!"))
  (or (string-match "^.+?:[ \t]*[^ \t]+"
                    (buffer-substring-no-properties
                     (progn (beginning-of-line) (point))
                     (progn (end-of-line) (point))))
      (error "No subject!")))

-kin

pemente@northpark.edu (Eric Pement) writes:

> I would like to know how to prevent Emacs from sending email with no
> subject (or with a subject line that contains only whitespace). I've
> accidentally sent a couple of messages this way, and I think Emacs
> converted the subject line to "(unknown)" for me, but I'm not sure. At
> any rate, I want Emacs to not send the message if the subject line is
> empty, but to prompt me to enter the missing subject.
> 
> I've already checked the FAQ, the Customization menu, "Learning GNU
> Emacs" and searched the Google archives for this issue, but I can't
> seem to find the answer. Any help would be appreciated.
> 
> -- 
> Eric Pement