Variable: mail-mailer-swallows-blank-line
mail-mailer-swallows-blank-line is a variable defined in
sendmail.el.gz.
This variable is obsolete since 24.1; no need to set this on any modern system.
Value
nil
Documentation
Set this non-nil if the system's mailer runs the header and body together.
The actual value should be an expression to evaluate that returns
non-nil if the problem will actually occur.
(As far as we know, this is not an issue on any system still supported
by Emacs.)
Source Code
;; Defined in /usr/src/emacs/lisp/mail/sendmail.el.gz
;; Note: could use /usr/ucb/mail instead of sendmail;
;; options -t, and -v if not interactive.
(defvar mail-mailer-swallows-blank-line nil
"Set this non-nil if the system's mailer runs the header and body together.
The actual value should be an expression to evaluate that returns
non-nil if the problem will actually occur.
\(As far as we know, this is not an issue on any system still supported
by Emacs.)")