From mboxrd@z Thu Jan  1 00:00:00 1970
Path: main.gmane.org!not-for-mail
From: Pascal Bourguignon <pjb@informatimago.com>
Newsgroups: gmane.emacs.help
Subject: Re: Pre-processor commands in c-mode
Date: 21 Mar 2003 23:33:53 +0100
Organization: informatimago.com
Sender: help-gnu-emacs-bounces+gnu-help-gnu-emacs=m.gmane.org@gnu.org
Message-ID: <874r5wic32.fsf@thalassa.informatimago.com>
References: <mailman.3490.1048277110.21513.help-gnu-emacs@gnu.org>
NNTP-Posting-Host: main.gmane.org
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
X-Trace: main.gmane.org 1048286259 23836 80.91.224.249 (21 Mar 2003 22:37:39 GMT)
X-Complaints-To: usenet@main.gmane.org
NNTP-Posting-Date: Fri, 21 Mar 2003 22:37:39 +0000 (UTC)
Original-X-From: help-gnu-emacs-bounces+gnu-help-gnu-emacs=m.gmane.org@gnu.org Fri Mar 21 23:37:38 2003
Return-path: <help-gnu-emacs-bounces+gnu-help-gnu-emacs=m.gmane.org@gnu.org>
Original-Received: from monty-python.gnu.org ([199.232.76.173])
	by main.gmane.org with esmtp (Exim 3.35 #1 (Debian))
	id 18wV8s-0006CH-00
	for <gnu-help-gnu-emacs@m.gmane.org>; Fri, 21 Mar 2003 23:37:38 +0100
Original-Received: from localhost ([127.0.0.1] helo=monty-python.gnu.org)
	by monty-python.gnu.org with esmtp (Exim 4.10.13)
	id 18wV6l-0007j9-09
	for gnu-help-gnu-emacs@m.gmane.org; Fri, 21 Mar 2003 17:35:27 -0500
Original-Path: shelby.stanford.edu!newsfeed.stanford.edu!headwall.stanford.edu!fu-berlin.de!uni-berlin.de!213.220.35.225!not-for-mail
Original-Newsgroups: gnu.emacs.help
Original-Lines: 57
Original-NNTP-Posting-Host: 213.220.35.225
Original-X-Trace: fu-berlin.de 1048286039 75965711 213.220.35.225 (16 [41911])
User-Agent: Gnus/5.09 (Gnus v5.9.0) Emacs/21.3.50
Original-Xref: shelby.stanford.edu gnu.emacs.help:111304
Original-To: help-gnu-emacs@gnu.org
X-BeenThere: help-gnu-emacs@gnu.org
X-Mailman-Version: 2.1b5
Precedence: list
List-Id: Users list for the GNU Emacs text editor <help-gnu-emacs.gnu.org>
List-Help: <mailto:help-gnu-emacs-request@gnu.org?subject=help>
List-Post: <mailto:help-gnu-emacs@gnu.org>
List-Subscribe: <http://mail.gnu.org/mailman/listinfo/help-gnu-emacs>,
	<mailto:help-gnu-emacs-request@gnu.org?subject=subscribe>
List-Archive: <http://mail.gnu.org/pipermail/help-gnu-emacs>
List-Unsubscribe: <http://mail.gnu.org/mailman/listinfo/help-gnu-emacs>,
	<mailto:help-gnu-emacs-request@gnu.org?subject=unsubscribe>
Errors-To: help-gnu-emacs-bounces+gnu-help-gnu-emacs=m.gmane.org@gnu.org
Xref: main.gmane.org gmane.emacs.help:7803
X-Report-Spam: http://spam.gmane.org/gmane.emacs.help:7803


Kevin Dziulko <dziulko@klaatu.canisius.edu> writes:

> Hello
> 
> Does any one know of a good method / setting / package for better
> handling of pre-processor commands in c-mode, specificly spacing
> and auto-indentation?
> 
> For example, if I enter the folloeing code, the #endif moves to
> the beginning of the line when I press enter after it.
> 
> int main ()
> {
>     if (x)
>     {
>         #ifdef DEBUG
>         printf("null");
> #endif
>     }
> }
> 
> Thanks for any help.
> Kevin

Of course. The normal indentation for cpp directive is column 0:

int main ()
{
    if (x)
        {
#ifdef DEBUG
            printf("null");
#endif
        }
}


Normally, cpp takes into account only directive whose '#' is in column 0.
That's why you sometimes see directives indented this way:

#ifdef COND1
#  ifdef COND2
#     ifdef COND3
#     else
#     endif
#  endif
#else
#  ifdef COND2
#  endif
#endif


-- 
__Pascal_Bourguignon__                   http://www.informatimago.com/
----------------------------------------------------------------------
Do not adjust your mind, there is a fault in reality.