1 files changed, 0 insertions, 99 deletions
diff --git a/usr.bin/vi/nex/ex_undo.c b/usr.bin/vi/nex/ex_undo.c
deleted file mode 100644
index c8dedd8d401a..000000000000
--- a/usr.bin/vi/nex/ex_undo.c
+++ /dev/null
@@ -1,99 +0,0 @@
-/*-
- * Copyright (c) 1992, 1993
- *	The Regents of the University of California.  All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- *    must display the following acknowledgement:
- *	This product includes software developed by the University of
- *	California, Berkeley and its contributors.
- * 4. Neither the name of the University nor the names of its contributors
- *    may be used to endorse or promote products derived from this software
- *    without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-#ifndef lint
-static char sccsid[] = "@(#)ex_undo.c	8.4 (Berkeley) 12/29/93";
-#endif /* not lint */
-
-#include <sys/types.h>
-
-#include "vi.h"
-#include "excmd.h"
-
-/*
- * ex_undol -- U
- *	Undo changes to this line.
- */
-int
-ex_undol(sp, ep, cmdp)
-	SCR *sp;
-	EXF *ep;
-	EXCMDARG *cmdp;
-{
-	if (log_setline(sp, ep))
-		return (1);
-
-	sp->cno = 0;
-	return (0);
-}
-
-/*
- * ex_undo -- u
- *	Undo the last change.
- */
-int
-ex_undo(sp, ep, cmdp)
-	SCR *sp;
-	EXF *ep;
-	EXCMDARG *cmdp;
-{
-	MARK m;
-
-	/*
-	 * !!!
-	 * Multiple undo isn't available in ex, as there's no '.' command.
-	 * Whether 'u' is undo or redo is toggled each time, unless there
-	 * was a change since the last undo, in which case it's an undo.
-	 */
-	if (!F_ISSET(ep, F_UNDO)) {
-		F_SET(ep, F_UNDO);
-		ep->lundo = FORWARD;
-	}
-	switch (ep->lundo) {
-	case BACKWARD:
-		if (log_forward(sp, ep, &m))
-			return (1);
-		ep->lundo = FORWARD;
-		break;
-	case FORWARD:
-		if (log_backward(sp, ep, &m))
-			return (1);
-		ep->lundo = BACKWARD;
-		break;
-	case NOTSET:
-		abort();
-	}
-	sp->lno = m.lno;
-	sp->cno = m.cno;
-	return (0);
-}