upstream/mercurial-mirror Files · mercurial/thirdparty/xdiff/xinclude.h

revset: special case commonancestors(none()) to be empty set...

revset: special case commonancestors(none()) to be empty set This matches the behavior of ancestor(none()). From an implementation perspective, ancestor() and commonancestors() are intersection, and ancestors() is union, so it would make some sense that commonancestors(none()) returned all revisions. However, ancestor(none()) isn't implemented as such, which breaks ancestor(x) == max(commonancestors(x)). From a user perspective, ancestors of nothing is nothing whichever type of operation the ancestor predicate does.

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      /*

       *  LibXDiff by Davide Libenzi ( File Differential Library )

       *  Copyright (C) 2003  Davide Libenzi

       *

       *  This library is free software; you can redistribute it and/or

       *  modify it under the terms of the GNU Lesser General Public

       *  License as published by the Free Software Foundation; either

       *  version 2.1 of the License, or (at your option) any later version.

       *

       *  This library is distributed in the hope that it will be useful,

       *  but WITHOUT ANY WARRANTY; without even the implied warranty of

       *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

       *  Lesser General Public License for more details.

       *

       *  You should have received a copy of the GNU Lesser General Public

       *  License along with this library; if not, see

       *  <http://www.gnu.org/licenses/>.

       *

       *  Davide Libenzi <davidel@xmailserver.org>

       *

       */

      #if !defined(XINCLUDE_H)

      #define XINCLUDE_H

      #include <ctype.h>

      #include <stdio.h>

      #include <stdlib.h>

      #include <string.h>

      #include <limits.h>

      #include "xmacros.h"

      #include "xdiff.h"

      #include "xtypes.h"

      #include "xutils.h"

      #include "xprepare.h"

      #include "xdiffi.h"

      #endif /* #if !defined(XINCLUDE_H) */

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				/*
				* LibXDiff by Davide Libenzi ( File Differential Library )
				* Copyright (C) 2003 Davide Libenzi
				*
				* This library is free software; you can redistribute it and/or
				* modify it under the terms of the GNU Lesser General Public
				* License as published by the Free Software Foundation; either
				* version 2.1 of the License, or (at your option) any later version.
				*
				* This library is distributed in the hope that it will be useful,
				* but WITHOUT ANY WARRANTY; without even the implied warranty of
				* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
				* Lesser General Public License for more details.
				*
				* You should have received a copy of the GNU Lesser General Public
				* License along with this library; if not, see
				* <http://www.gnu.org/licenses/>.
				*
				* Davide Libenzi <davidel@xmailserver.org>
				*
				*/

				#if !defined(XINCLUDE_H)
				#define XINCLUDE_H

				#include <ctype.h>
				#include <stdio.h>
				#include <stdlib.h>
				#include <string.h>
				#include <limits.h>

				#include "xmacros.h"
				#include "xdiff.h"
				#include "xtypes.h"
				#include "xutils.h"
				#include "xprepare.h"
				#include "xdiffi.h"


				#endif /* #if !defined(XINCLUDE_H) */