From: Xavier Maillard <xma@gnu.org>
Date: Fri, 29 Feb 2008 02:00:18 GMT
Subject: Re: [PATCH 1/2] help: add "man.viewer" config var to use "woman" or "konqueror"
Message-ID: <200802290200.m1T20I7Z018030@localhost.localdomain>
In-Reply-To: <20080228051956.2f36edf0.chriscool@tuxfamily.org>

Hi (again),

   Note that "emacsclient" is used with option "-e" to launch "woman"
   on emacs and this works only on versions >= 22.

Here are more clues concerning emacsclient I found out when
trying to understand why it worked for you with >=22 and not for
me with a 23.x version.

   +
   +	/* emacsclient prints its version number on stderr */

As commented into another post, here the version is displayed on
stdout which is confirmed by reading the source code:

/* Display a normal or error message.
   On Windows, use a message box if compiled as a Windows app.  */

      FILE *f = is_error ? stderr : stdout;
      fputs (msg, f);
      fflush (f);

is_error is a boolean parameter to the function message.

   +	/*
   +	 * Don't bother checking return value, because "emacsclient --version"
   +	 * seems to always exits with code 1.
   +	 */

Almost, in fact, in emacsclient.c, we can read

	case 'V':
	  message (FALSE, "emacsclient %s\n", VERSION);
	  exit (EXIT_SUCCESS);
	  break;

So it always returns 0.

Regards

	Xavier
-- 
http://www.gnu.org
http://www.april.org
http://www.lolica.org