The "true" format of .mailrc

[Jan Vroonhof <vroonhof@math.ethz.ch>]

mail-abbrevs.el has this

	end)
    (while start
      ;; If we're reading from the mailrc file, then addresses are delimited
      ;; by spaces, and addresses with embedded spaces must be surrounded by
      ;; single or double-quotes.  Otherwise, addresses are separated by
      ;; commas.
      (if from-mailrc-file
	  (cond ((eq ?\" (aref definition start))
		 (setq start (1+ start)
		       end (string-match "\"[ \t,]*" definition start)))
		((eq ?\' (aref definition start))

However my other MUA (mutt) disagrees. It always wants comments in its 
alias file and generates entries like

alias joe Joe User <joe@pobox.net>

mail-abbrevs.el turns this into three aliases: Joe, User,
<joe@pobox.net>.

Unfortunately mutt also doesn't remove the quotes from

alias joe "Joe User <joe@pobox.net>"

A quick glance at other MUA's show that they _all_ want commas

Jan