bug#1298: allow 'emacsclient -a "emacs --daemon && emacsclient -c"'

[Stefan Monnier]

>> It would be nice if some equivalent of: 
>> 'emacsclient -a "emacs --daemon && emacsclient -c"
>> would work.
>> That would allow one to ALWAYS use emacsclient. 

> Here's a quick hack that allows:
> emacsclient -a "emacs --daemon && emacsclient -c" FILENAME
> to work.  It is not complete yet, FILENAME does not get passed to the
> "&& emacsclient"

Here's an alternative:

   [ "$(emacsclient -e "'up" 2>/dev/null)" = "up" ] || emacs --daemon
   emacsclient -c FILENAME


-- Stefan