1 files changed, 82 insertions, 0 deletions
diff --git a/contrib/nvi/vi/v_yank.c b/contrib/nvi/vi/v_yank.c
new file mode 100644
index 0000000..4708f19
--- /dev/null
+++ b/contrib/nvi/vi/v_yank.c
@@ -0,0 +1,82 @@
+/*-
+ * Copyright (c) 1992, 1993, 1994
+ *	The Regents of the University of California.  All rights reserved.
+ * Copyright (c) 1992, 1993, 1994, 1995, 1996
+ *	Keith Bostic.  All rights reserved.
+ *
+ * See the LICENSE file for redistribution information.
+ */
+
+#include "config.h"
+
+#ifndef lint
+static const char sccsid[] = "@(#)v_yank.c	10.9 (Berkeley) 5/19/96";
+#endif /* not lint */
+
+#include <sys/types.h>
+#include <sys/queue.h>
+#include <sys/time.h>
+
+#include <bitstring.h>
+#include <limits.h>
+#include <stdio.h>
+
+#include "../common/common.h"
+#include "vi.h"
+
+/*
+ * v_yank -- [buffer][count]y[count][motion]
+ *	     [buffer][count]Y
+ *	Yank text (or lines of text) into a cut buffer.
+ *
+ * !!!
+ * Historic vi moved the cursor to the from MARK if it was before the current
+ * cursor and on a different line, e.g., "yk" moves the cursor but "yj" and
+ * "yl" do not.  Unfortunately, it's too late to change this now.  Matching
+ * the historic semantics isn't easy.  The line number was always changed and
+ * column movement was usually relative.  However, "y'a" moved the cursor to
+ * the first non-blank of the line marked by a, while "y`a" moved the cursor
+ * to the line and column marked by a.  Hopefully, the motion component code
+ * got it right...   Unlike delete, we make no adjustments here.
+ *
+ * PUBLIC: int v_yank __P((SCR *, VICMD *));
+ */
+int
+v_yank(sp, vp)
+	SCR *sp;
+	VICMD *vp;
+{
+	size_t len;
+
+	if (cut(sp,
+	    F_ISSET(vp, VC_BUFFER) ? &vp->buffer : NULL, &vp->m_start,
+	    &vp->m_stop, F_ISSET(vp, VM_LMODE) ? CUT_LINEMODE : 0))
+		return (1);
+	sp->rptlines[L_YANKED] += (vp->m_stop.lno - vp->m_start.lno) + 1;
+
+	/*
+	 * One special correction, in case we've deleted the current line or
+	 * character.  We check it here instead of checking in every command
+	 * that can be a motion component.
+	 */
+	if (db_get(sp, vp->m_final.lno, DBG_FATAL, NULL, &len))
+		return (1);
+
+	/*
+	 * !!!
+	 * Cursor movements, other than those caused by a line mode command
+	 * moving to another line, historically reset the relative position.
+	 *
+	 * This currently matches the check made in v_delete(), I'm hoping
+	 * that they should be consistent...
+	 */  
+	if (!F_ISSET(vp, VM_LMODE)) {
+		F_CLR(vp, VM_RCM_MASK);
+		F_SET(vp, VM_RCM_SET);
+
+		/* Make sure the set cursor position exists. */
+		if (vp->m_final.cno >= len)
+			vp->m_final.cno = len ? len - 1 : 0;
+	}
+	return (0);
+}