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diff --git a/nx-X11/programs/xterm/cursor.c b/nx-X11/programs/xterm/cursor.c
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+/* $XTermId: cursor.c,v 1.36 2005/08/05 01:25:39 tom Exp $ */
+
+/*
+ * $Xorg: cursor.c,v 1.3 2000/08/17 19:55:08 cpqbld Exp $
+ */
+
+/* $XFree86: xc/programs/xterm/cursor.c,v 3.18 2005/08/05 01:25:39 dickey Exp $ */
+
+/*
+ * Copyright 2002-2004,2005 by Thomas E. Dickey
+ *
+ * All Rights Reserved
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ * IN NO EVENT SHALL THE ABOVE LISTED COPYRIGHT HOLDER(S) BE LIABLE FOR ANY
+ * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Except as contained in this notice, the name(s) of the above copyright
+ * holders shall not be used in advertising or otherwise to promote the
+ * sale, use or other dealings in this Software without prior written
+ * authorization.
+ *
+ * Copyright 1987 by Digital Equipment Corporation, Maynard, Massachusetts.
+ *
+ * All Rights Reserved
+ *
+ * Permission to use, copy, modify, and distribute this software and its
+ * documentation for any purpose and without fee is hereby granted,
+ * provided that the above copyright notice appear in all copies and that
+ * both that copyright notice and this permission notice appear in
+ * supporting documentation, and that the name of Digital Equipment
+ * Corporation not be used in advertising or publicity pertaining to
+ * distribution of the software without specific, written prior permission.
+ *
+ *
+ * DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
+ * ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
+ * DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
+ * ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+ * WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
+ * ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
+ * SOFTWARE.
+ */
+
+/* cursor.c */
+
+#include <xterm.h>
+#include <data.h>
+
+#include <assert.h>
+
+/*
+ * Moves the cursor to the specified position, checking for bounds.
+ * (this includes scrolling regions)
+ * The origin is considered to be 0, 0 for this procedure.
+ */
+void
+CursorSet(TScreen * screen, int row, int col, unsigned flags)
+{
+ int use_row = row;
+ int max_row;
+
+ col = (col < 0 ? 0 : col);
+ set_cur_col(screen, (col <= screen->max_col ? col : screen->max_col));
+ max_row = screen->max_row;
+ if (flags & ORIGIN) {
+ use_row += screen->top_marg;
+ max_row = screen->bot_marg;
+ }
+ use_row = (use_row < 0 ? 0 : use_row);
+ set_cur_row(screen, (use_row <= max_row ? use_row : max_row));
+ screen->do_wrap = 0;
+
+ TRACE(("CursorSet(%d,%d) margins [%d..%d] -> %d,%d %s\n",
+ row, col,
+ screen->top_marg,
+ screen->bot_marg,
+ screen->cur_row,
+ screen->cur_col,
+ (flags & ORIGIN ? "origin" : "normal")));
+}
+
+/*
+ * moves the cursor left n, no wrap around
+ */
+void
+CursorBack(TScreen * screen, int n)
+{
+ int i, j, k, rev;
+
+ if ((rev = (term->flags & (REVERSEWRAP | WRAPAROUND)) ==
+ (REVERSEWRAP | WRAPAROUND)) != 0
+ && screen->do_wrap)
+ n--;
+ if ((screen->cur_col -= n) < 0) {
+ if (rev) {
+ if ((i = ((j = MaxCols(screen))
+ * screen->cur_row) + screen->cur_col) < 0) {
+ k = j * MaxRows(screen);
+ i += ((-i) / k + 1) * k;
+ }
+ set_cur_row(screen, i / j);
+ set_cur_col(screen, i % j);
+ } else
+ set_cur_col(screen, 0);
+ }
+ screen->do_wrap = 0;
+}
+
+/*
+ * moves the cursor forward n, no wraparound
+ */
+void
+CursorForward(TScreen * screen, int n)
+{
+ int next = screen->cur_col + n;
+ int max = CurMaxCol(screen, screen->cur_row);
+
+ if (next > max)
+ next = max;
+
+ set_cur_col(screen, next);
+ screen->do_wrap = 0;
+}
+
+/*
+ * moves the cursor down n, no scrolling.
+ * Won't pass bottom margin or bottom of screen.
+ */
+void
+CursorDown(TScreen * screen, int n)
+{
+ int max;
+ int next = screen->cur_row + n;
+
+ max = (screen->cur_row > screen->bot_marg ?
+ screen->max_row : screen->bot_marg);
+ if (next > max)
+ next = max;
+ if (next > screen->max_row)
+ next = screen->max_row;
+
+ set_cur_row(screen, next);
+ screen->do_wrap = 0;
+}
+
+/*
+ * moves the cursor up n, no linestarving.
+ * Won't pass top margin or top of screen.
+ */
+void
+CursorUp(TScreen * screen, int n)
+{
+ int min;
+ int next = screen->cur_row - n;
+
+ min = ((screen->cur_row < screen->top_marg)
+ ? 0
+ : screen->top_marg);
+ if (next < min)
+ next = min;
+ if (next < 0)
+ next = 0;
+
+ set_cur_row(screen, next);
+ screen->do_wrap = 0;
+}
+
+/*
+ * Moves cursor down amount lines, scrolls if necessary.
+ * Won't leave scrolling region. No carriage return.
+ */
+void
+xtermIndex(TScreen * screen, int amount)
+{
+ int j;
+
+ /*
+ * indexing when below scrolling region is cursor down.
+ * if cursor high enough, no scrolling necessary.
+ */
+ if (screen->cur_row > screen->bot_marg
+ || screen->cur_row + amount <= screen->bot_marg) {
+ CursorDown(screen, amount);
+ return;
+ }
+
+ CursorDown(screen, j = screen->bot_marg - screen->cur_row);
+ xtermScroll(screen, amount - j);
+}
+
+/*
+ * Moves cursor up amount lines, reverse scrolls if necessary.
+ * Won't leave scrolling region. No carriage return.
+ */
+void
+RevIndex(TScreen * screen, int amount)
+{
+ /*
+ * reverse indexing when above scrolling region is cursor up.
+ * if cursor low enough, no reverse indexing needed
+ */
+ if (screen->cur_row < screen->top_marg
+ || screen->cur_row - amount >= screen->top_marg) {
+ CursorUp(screen, amount);
+ return;
+ }
+
+ RevScroll(screen, amount - (screen->cur_row - screen->top_marg));
+ CursorUp(screen, screen->cur_row - screen->top_marg);
+}
+
+/*
+ * Moves Cursor To First Column In Line
+ * (Note: xterm doesn't implement SLH, SLL which would affect use of this)
+ */
+void
+CarriageReturn(TScreen * screen)
+{
+ set_cur_col(screen, 0);
+ screen->do_wrap = 0;
+}
+
+/*
+ * Save Cursor and Attributes
+ */
+void
+CursorSave(XtermWidget tw)
+{
+ TScreen *screen = &tw->screen;
+ SavedCursor *sc = &screen->sc[screen->alternate != False];
+
+ sc->saved = True;
+ sc->row = screen->cur_row;
+ sc->col = screen->cur_col;
+ sc->flags = tw->flags;
+ sc->curgl = screen->curgl;
+ sc->curgr = screen->curgr;
+#if OPT_ISO_COLORS
+ sc->cur_foreground = tw->cur_foreground;
+ sc->cur_background = tw->cur_background;
+ sc->sgr_foreground = tw->sgr_foreground;
+#endif
+ memmove(sc->gsets, screen->gsets, sizeof(screen->gsets));
+}
+
+/*
+ * We save/restore all visible attributes, plus wrapping, origin mode, and the
+ * selective erase attribute.
+ */
+#define DECSC_FLAGS (ATTRIBUTES|ORIGIN|WRAPAROUND|PROTECTED)
+
+/*
+ * Restore Cursor and Attributes
+ */
+void
+CursorRestore(XtermWidget tw)
+{
+ TScreen *screen = &tw->screen;
+ SavedCursor *sc = &screen->sc[screen->alternate != False];
+
+ /* Restore the character sets, unless we never did a save-cursor op.
+ * In that case, we'll reset the character sets.
+ */
+ if (sc->saved) {
+ memmove(screen->gsets, sc->gsets, sizeof(screen->gsets));
+ screen->curgl = sc->curgl;
+ screen->curgr = sc->curgr;
+ } else {
+ resetCharsets(screen);
+ }
+
+ tw->flags &= ~DECSC_FLAGS;
+ tw->flags |= sc->flags & DECSC_FLAGS;
+ CursorSet(screen,
+ ((tw->flags & ORIGIN)
+ ? sc->row - screen->top_marg
+ : sc->row),
+ sc->col, tw->flags);
+
+#if OPT_ISO_COLORS
+ tw->sgr_foreground = sc->sgr_foreground;
+ SGR_Foreground(tw->flags & FG_COLOR ? sc->cur_foreground : -1);
+ SGR_Background(tw->flags & BG_COLOR ? sc->cur_background : -1);
+#endif
+}
+
+/*
+ * Move the cursor to the first column of the n-th next line.
+ */
+void
+CursorNextLine(TScreen * screen, int count)
+{
+ CursorDown(screen, count < 1 ? 1 : count);
+ CarriageReturn(screen);
+ do_xevents();
+}
+
+/*
+ * Move the cursor to the first column of the n-th previous line.
+ */
+void
+CursorPrevLine(TScreen * screen, int count)
+{
+ CursorUp(screen, count < 1 ? 1 : count);
+ CarriageReturn(screen);
+ do_xevents();
+}
+
+#if OPT_TRACE
+int
+set_cur_row(TScreen * screen, int value)
+{
+ assert(screen != 0);
+ assert(value >= 0);
+ assert(value <= screen->max_row);
+ screen->cur_row = value;
+ return value;
+}
+
+int
+set_cur_col(TScreen * screen, int value)
+{
+ assert(screen != 0);
+ assert(value >= 0);
+ assert(value <= screen->max_col);
+ screen->cur_col = value;
+ return value;
+}
+#endif /* OPT_TRACE */