Re: run emacs in batch mode without a tty

[Barry Margolin <barmar@alum.mit.edu>]

In article <mailman.6240.1435931463.904.help-gnu-emacs@gnu.org>,
 Eli Zaretskii <eliz@gnu.org> wrote:

> > Date: Fri, 3 Jul 2015 06:26:37 -0700 (PDT)
> > From: Sam Halliday <sam.halliday@gmail.com>
> > 
> > Emacs won't run without one. It just crashes.
> 
> It does?  It doesn't for me:
> 
>   emacs -batch --eval "(princ \"Hello, world\!\n\")" < /dev/null > foo
> 
> I get no crash and the expected message in the file 'foo'.
> 
> Anyway, if you see crashes due to lack of a TTY, please report that as
> a bug using "M-x report-emacs-bug".

That process still has a TTY, it's just not connected to stdin or 
stdout. But it's accessible as /dev/tty and also connected to stderr 
(you forgot to do 2>&1 to disconnect stderr).

I don't know offhand if this makes a difference to emacs, though.

-- 
Barry Margolin, barmar@alum.mit.edu
Arlington, MA
*** PLEASE post questions in newsgroups, not directly to me ***