Imported nx-X11-3.1.0-1.tar.gznx-X11/3.1.0-1

Summary: Imported nx-X11-3.1.0-1.tar.gz
Keywords:

Imported nx-X11-3.1.0-1.tar.gz
into Git repository

1 files changed, 2951 insertions, 0 deletions

diff --git a/nx-X11/programs/xterm/util.c b/nx-X11/programs/xterm/util.c
new file mode 100644
index 000000000..84feac48f
--- /dev/null
+++ b/nx-X11/programs/xterm/util.c
@@ -0,0 +1,2951 @@
+/* $XTermId: util.c,v 1.255 2005/09/18 23:48:13 tom Exp $ */
+
+/*
+ *	$Xorg: util.c,v 1.3 2000/08/17 19:55:10 cpqbld Exp $
+ */
+
+/* $XFree86: xc/programs/xterm/util.c,v 3.93 2005/09/18 23:48:13 dickey Exp $ */
+
+/*
+ * Copyright 1999-2004,2005 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.
+ */
+
+/* util.c */
+
+#include <xterm.h>
+
+#include <data.h>
+#include <error.h>
+#include <menu.h>
+#include <fontutils.h>
+#include <xstrings.h>
+
+#if OPT_WIDE_CHARS
+#if defined(HAVE_WCHAR_H) && defined(HAVE_WCWIDTH)
+#include <wchar.h>
+#endif
+#include <wcwidth.h>
+#endif
+
+#include <stdio.h>
+#include <ctype.h>
+#include <assert.h>
+
+static int ClearInLine(TScreen * screen, int row, int col, unsigned len);
+static int handle_translated_exposure(TScreen * screen,
+				      int rect_x,
+				      int rect_y,
+				      int rect_width,
+				      int rect_height);
+static void ClearLeft(TScreen * screen);
+static void CopyWait(TScreen * screen);
+static void horizontal_copy_area(TScreen * screen,
+				 int firstchar,
+				 int nchars,
+				 int amount);
+static void vertical_copy_area(TScreen * screen,
+			       int firstline,
+			       int nlines,
+			       int amount);
+
+#if OPT_WIDE_CHARS
+int (*my_wcwidth) (wchar_t);
+#endif
+
+/*
+ * These routines are used for the jump scroll feature
+ */
+void
+FlushScroll(TScreen * screen)
+{
+    int i;
+    int shift = -screen->topline;
+    int bot = screen->max_row - shift;
+    int refreshtop;
+    int refreshheight;
+    int scrolltop;
+    int scrollheight;
+
+    if (screen->cursor_state)
+	HideCursor();
+    if (screen->scroll_amt > 0) {
+	refreshheight = screen->refresh_amt;
+	scrollheight = screen->bot_marg - screen->top_marg -
+	    refreshheight + 1;
+	if ((refreshtop = screen->bot_marg - refreshheight + 1 + shift) >
+	    (i = screen->max_row - screen->scroll_amt + 1))
+	    refreshtop = i;
+	if (screen->scrollWidget && !screen->alternate
+	    && screen->top_marg == 0) {
+	    scrolltop = 0;
+	    if ((scrollheight += shift) > i)
+		scrollheight = i;
+	    if ((i = screen->bot_marg - bot) > 0 &&
+		(refreshheight -= i) < screen->scroll_amt)
+		refreshheight = screen->scroll_amt;
+	    if ((i = screen->savedlines) < screen->savelines) {
+		if ((i += screen->scroll_amt) >
+		    screen->savelines)
+		    i = screen->savelines;
+		screen->savedlines = i;
+		ScrollBarDrawThumb(screen->scrollWidget);
+	    }
+	} else {
+	    scrolltop = screen->top_marg + shift;
+	    if ((i = bot - (screen->bot_marg - screen->refresh_amt +
+			    screen->scroll_amt)) > 0) {
+		if (bot < screen->bot_marg)
+		    refreshheight = screen->scroll_amt + i;
+	    } else {
+		scrollheight += i;
+		refreshheight = screen->scroll_amt;
+		if ((i = screen->top_marg + screen->scroll_amt -
+		     1 - bot) > 0) {
+		    refreshtop += i;
+		    refreshheight -= i;
+		}
+	    }
+	}
+    } else {
+	refreshheight = -screen->refresh_amt;
+	scrollheight = screen->bot_marg - screen->top_marg -
+	    refreshheight + 1;
+	refreshtop = screen->top_marg + shift;
+	scrolltop = refreshtop + refreshheight;
+	if ((i = screen->bot_marg - bot) > 0)
+	    scrollheight -= i;
+	if ((i = screen->top_marg + refreshheight - 1 - bot) > 0)
+	    refreshheight -= i;
+    }
+    scrolling_copy_area(screen, scrolltop + screen->scroll_amt,
+			scrollheight, screen->scroll_amt);
+    ScrollSelection(screen, -(screen->scroll_amt), False);
+    screen->scroll_amt = 0;
+    screen->refresh_amt = 0;
+    if (refreshheight > 0) {
+	ClearCurBackground(screen,
+			   (int) refreshtop * FontHeight(screen) + screen->border,
+			   (int) OriginX(screen),
+			   (unsigned) refreshheight * FontHeight(screen),
+			   (unsigned) Width(screen));
+	ScrnRefresh(screen, refreshtop, 0, refreshheight,
+		    MaxCols(screen), False);
+    }
+    return;
+}
+
+int
+AddToRefresh(TScreen * screen)
+{
+    int amount = screen->refresh_amt;
+    int row = screen->cur_row;
+
+    if (amount == 0) {
+	return (0);
+    } else if (amount > 0) {
+	int bottom;
+
+	if (row == (bottom = screen->bot_marg) - amount) {
+	    screen->refresh_amt++;
+	    return (1);
+	}
+	return (row >= bottom - amount + 1 && row <= bottom);
+    } else {
+	int top;
+
+	amount = -amount;
+	if (row == (top = screen->top_marg) + amount) {
+	    screen->refresh_amt--;
+	    return (1);
+	}
+	return (row <= top + amount - 1 && row >= top);
+    }
+}
+
+/*
+ * If we're scrolling, leave the selection intact if possible.
+ * If it will bump into one of the extremes of the saved-lines, truncate that.
+ * If the selection is not contained within the scrolled region, clear it.
+ */
+static void
+adjustHiliteOnFwdScroll(TScreen * screen, int amount, Boolean all_lines)
+{
+    int lo_row = (all_lines
+		  ? (screen->bot_marg - screen->savelines)
+		  : screen->top_marg);
+    int hi_row = screen->bot_marg;
+
+    TRACE2(("adjustSelection FWD %s by %d (%s)\n",
+	    screen->alternate ? "alternate" : "normal",
+	    amount,
+	    all_lines ? "all" : "visible"));
+    TRACE2(("  before highlite %d.%d .. %d.%d\n",
+	    screen->startHRow,
+	    screen->startHCol,
+	    screen->endHRow,
+	    screen->endHCol));
+    TRACE2(("  margins %d..%d\n", screen->top_marg, screen->bot_marg));
+    TRACE2(("  limits  %d..%d\n", lo_row, hi_row));
+
+    if (screen->startHRow >= lo_row
+	&& screen->startHRow - amount < lo_row) {
+	/* truncate the selection because its start would move out of region */
+	if (lo_row + amount <= screen->endHRow) {
+	    TRACE2(("truncate selection by changing start %d.%d to %d.%d\n",
+		    screen->startHRow,
+		    screen->startHCol,
+		    lo_row + amount,
+		    0));
+	    screen->startHRow = lo_row + amount;
+	    screen->startHCol = 0;
+	} else {
+	    TRACE2(("deselect because %d.%d .. %d.%d shifted %d is outside margins %d..%d\n",
+		    screen->startHRow,
+		    screen->startHCol,
+		    screen->endHRow,
+		    screen->endHCol,
+		    -amount,
+		    lo_row,
+		    hi_row));
+	    ScrnDisownSelection(screen);
+	}
+    } else if (screen->startHRow <= hi_row && screen->endHRow > hi_row) {
+	ScrnDisownSelection(screen);
+    } else if (screen->startHRow < lo_row && screen->endHRow > lo_row) {
+	ScrnDisownSelection(screen);
+    }
+
+    TRACE2(("  after highlite %d.%d .. %d.%d\n",
+	    screen->startHRow,
+	    screen->startHCol,
+	    screen->endHRow,
+	    screen->endHCol));
+}
+
+/*
+ * This is the same as adjustHiliteOnFwdScroll(), but reversed.  In this case,
+ * only the visible lines are affected.
+ */
+static void
+adjustHiliteOnBakScroll(TScreen * screen, int amount)
+{
+    int lo_row = screen->top_marg;
+    int hi_row = screen->bot_marg;
+
+    TRACE2(("adjustSelection BAK %s by %d (%s)\n",
+	    screen->alternate ? "alternate" : "normal",
+	    amount,
+	    "visible"));
+    TRACE2(("  before highlite %d.%d .. %d.%d\n",
+	    screen->startHRow,
+	    screen->startHCol,
+	    screen->endHRow,
+	    screen->endHCol));
+    TRACE2(("  margins %d..%d\n", screen->top_marg, screen->bot_marg));
+
+    if (screen->endHRow >= hi_row
+	&& screen->endHRow + amount > hi_row) {
+	/* truncate the selection because its start would move out of region */
+	if (hi_row - amount >= screen->startHRow) {
+	    TRACE2(("truncate selection by changing start %d.%d to %d.%d\n",
+		    screen->startHRow,
+		    screen->startHCol,
+		    hi_row - amount,
+		    0));
+	    screen->endHRow = hi_row - amount;
+	    screen->endHCol = 0;
+	} else {
+	    TRACE2(("deselect because %d.%d .. %d.%d shifted %d is outside margins %d..%d\n",
+		    screen->startHRow,
+		    screen->startHCol,
+		    screen->endHRow,
+		    screen->endHCol,
+		    amount,
+		    lo_row,
+		    hi_row));
+	    ScrnDisownSelection(screen);
+	}
+    } else if (screen->endHRow >= lo_row && screen->startHRow < lo_row) {
+	ScrnDisownSelection(screen);
+    } else if (screen->endHRow > hi_row && screen->startHRow > hi_row) {
+	ScrnDisownSelection(screen);
+    }
+
+    TRACE2(("  after highlite %d.%d .. %d.%d\n",
+	    screen->startHRow,
+	    screen->startHCol,
+	    screen->endHRow,
+	    screen->endHCol));
+}
+
+/*
+ * scrolls the screen by amount lines, erases bottom, doesn't alter
+ * cursor position (i.e. cursor moves down amount relative to text).
+ * All done within the scrolling region, of course.
+ * requires: amount > 0
+ */
+void
+xtermScroll(TScreen * screen, int amount)
+{
+    int i = screen->bot_marg - screen->top_marg + 1;
+    int shift;
+    int bot;
+    int refreshtop = 0;
+    int refreshheight;
+    int scrolltop;
+    int scrollheight;
+    Boolean scroll_all_lines = (screen->scrollWidget
+				&& !screen->alternate
+				&& screen->top_marg == 0);
+
+    TRACE(("xtermScroll count=%d\n", amount));
+
+    screen->cursor_busy += 1;
+    screen->cursor_moved = True;
+
+    if (screen->cursor_state)
+	HideCursor();
+
+    if (amount > i)
+	amount = i;
+
+    if (ScrnHaveSelection(screen))
+	adjustHiliteOnFwdScroll(screen, amount, scroll_all_lines);
+
+    if (screen->jumpscroll) {
+	if (screen->scroll_amt > 0) {
+	    if (screen->refresh_amt + amount > i)
+		FlushScroll(screen);
+	    screen->scroll_amt += amount;
+	    screen->refresh_amt += amount;
+	} else {
+	    if (screen->scroll_amt < 0)
+		FlushScroll(screen);
+	    screen->scroll_amt = amount;
+	    screen->refresh_amt = amount;
+	}
+	refreshheight = 0;
+    } else {
+	ScrollSelection(screen, -(amount), False);
+	if (amount == i) {
+	    ClearScreen(screen);
+	    screen->cursor_busy -= 1;
+	    return;
+	}
+
+	shift = -screen->topline;
+	bot = screen->max_row - shift;
+	scrollheight = i - amount;
+	refreshheight = amount;
+
+	if ((refreshtop = screen->bot_marg - refreshheight + 1 + shift) >
+	    (i = screen->max_row - refreshheight + 1))
+	    refreshtop = i;
+
+	if (scroll_all_lines) {
+	    scrolltop = 0;
+	    if ((scrollheight += shift) > i)
+		scrollheight = i;
+	    if ((i = screen->savedlines) < screen->savelines) {
+		if ((i += amount) > screen->savelines)
+		    i = screen->savelines;
+		screen->savedlines = i;
+		ScrollBarDrawThumb(screen->scrollWidget);
+	    }
+	} else {
+	    scrolltop = screen->top_marg + shift;
+	    if ((i = screen->bot_marg - bot) > 0) {
+		scrollheight -= i;
+		if ((i = screen->top_marg + amount - 1 - bot) >= 0) {
+		    refreshtop += i;
+		    refreshheight -= i;
+		}
+	    }
+	}
+
+	if (screen->multiscroll && amount == 1 &&
+	    screen->topline == 0 && screen->top_marg == 0 &&
+	    screen->bot_marg == screen->max_row) {
+	    if (screen->incopy < 0 && screen->scrolls == 0)
+		CopyWait(screen);
+	    screen->scrolls++;
+	}
+
+	scrolling_copy_area(screen, scrolltop + amount, scrollheight, amount);
+
+	if (refreshheight > 0) {
+	    ClearCurBackground(screen,
+			       (int) refreshtop * FontHeight(screen) + screen->border,
+			       (int) OriginX(screen),
+			       (unsigned) refreshheight * FontHeight(screen),
+			       (unsigned) Width(screen));
+	    if (refreshheight > shift)
+		refreshheight = shift;
+	}
+    }
+
+    if (amount > 0) {
+	if (scroll_all_lines) {
+	    ScrnDeleteLine(screen,
+			   screen->allbuf,
+			   screen->bot_marg + screen->savelines,
+			   0,
+			   (unsigned) amount,
+			   (unsigned) MaxCols(screen));
+	} else {
+	    ScrnDeleteLine(screen,
+			   screen->visbuf,
+			   screen->bot_marg,
+			   screen->top_marg,
+			   (unsigned) amount,
+			   (unsigned) MaxCols(screen));
+	}
+    }
+
+    if (refreshheight > 0) {
+	ScrnRefresh(screen, refreshtop, 0, refreshheight,
+		    MaxCols(screen), False);
+    }
+
+    screen->cursor_busy -= 1;
+    return;
+}
+
+/*
+ * Reverse scrolls the screen by amount lines, erases top, doesn't alter
+ * cursor position (i.e. cursor moves up amount relative to text).
+ * All done within the scrolling region, of course.
+ * Requires: amount > 0
+ */
+void
+RevScroll(TScreen * screen, int amount)
+{
+    int i = screen->bot_marg - screen->top_marg + 1;
+    int shift;
+    int bot;
+    int refreshtop;
+    int refreshheight;
+    int scrolltop;
+    int scrollheight;
+
+    TRACE(("RevScroll count=%d\n", amount));
+
+    screen->cursor_busy += 1;
+    screen->cursor_moved = True;
+
+    if (screen->cursor_state)
+	HideCursor();
+
+    if (amount > i)
+	amount = i;
+
+    if (ScrnHaveSelection(screen))
+	adjustHiliteOnBakScroll(screen, amount);
+
+    if (screen->jumpscroll) {
+	if (screen->scroll_amt < 0) {
+	    if (-screen->refresh_amt + amount > i)
+		FlushScroll(screen);
+	    screen->scroll_amt -= amount;
+	    screen->refresh_amt -= amount;
+	} else {
+	    if (screen->scroll_amt > 0)
+		FlushScroll(screen);
+	    screen->scroll_amt = -amount;
+	    screen->refresh_amt = -amount;
+	}
+    } else {
+	shift = -screen->topline;
+	bot = screen->max_row - shift;
+	refreshheight = amount;
+	scrollheight = screen->bot_marg - screen->top_marg -
+	    refreshheight + 1;
+	refreshtop = screen->top_marg + shift;
+	scrolltop = refreshtop + refreshheight;
+	if ((i = screen->bot_marg - bot) > 0)
+	    scrollheight -= i;
+	if ((i = screen->top_marg + refreshheight - 1 - bot) > 0)
+	    refreshheight -= i;
+
+	if (screen->multiscroll && amount == 1 &&
+	    screen->topline == 0 && screen->top_marg == 0 &&
+	    screen->bot_marg == screen->max_row) {
+	    if (screen->incopy < 0 && screen->scrolls == 0)
+		CopyWait(screen);
+	    screen->scrolls++;
+	}
+
+	scrolling_copy_area(screen, scrolltop - amount, scrollheight, -amount);
+
+	if (refreshheight > 0) {
+	    ClearCurBackground(screen,
+			       (int) refreshtop * FontHeight(screen) + screen->border,
+			       (int) OriginX(screen),
+			       (unsigned) refreshheight * FontHeight(screen),
+			       (unsigned) Width(screen));
+	}
+    }
+    if (amount > 0) {
+	ScrnInsertLine(screen,
+		       screen->visbuf,
+		       screen->bot_marg,
+		       screen->top_marg,
+		       (unsigned) amount,
+		       (unsigned) MaxCols(screen));
+    }
+    screen->cursor_busy -= 1;
+    return;
+}
+
+/*
+ * If cursor not in scrolling region, returns.  Else,
+ * inserts n blank lines at the cursor's position.  Lines above the
+ * bottom margin are lost.
+ */
+void
+InsertLine(TScreen * screen, int n)
+{
+    int i;
+    int shift;
+    int bot;
+    int refreshtop;
+    int refreshheight;
+    int scrolltop;
+    int scrollheight;
+
+    if (!ScrnIsLineInMargins(screen, screen->cur_row - screen->topline))
+	return;
+
+    TRACE(("InsertLine count=%d\n", n));
+
+    if (screen->cursor_state)
+	HideCursor();
+
+    if (ScrnHaveSelection(screen)
+	&& ScrnAreLinesInSelection(screen, screen->top_marg, screen->bot_marg)) {
+	ScrnDisownSelection(screen);
+    }
+
+    screen->do_wrap = 0;
+    if (n > (i = screen->bot_marg - screen->cur_row + 1))
+	n = i;
+    if (screen->jumpscroll) {
+	if (screen->scroll_amt <= 0 &&
+	    screen->cur_row <= -screen->refresh_amt) {
+	    if (-screen->refresh_amt + n > MaxRows(screen))
+		FlushScroll(screen);
+	    screen->scroll_amt -= n;
+	    screen->refresh_amt -= n;
+	} else if (screen->scroll_amt)
+	    FlushScroll(screen);
+    }
+    if (!screen->scroll_amt) {
+	shift = -screen->topline;
+	bot = screen->max_row - shift;
+	refreshheight = n;
+	scrollheight = screen->bot_marg - screen->cur_row - refreshheight + 1;
+	refreshtop = screen->cur_row + shift;
+	scrolltop = refreshtop + refreshheight;
+	if ((i = screen->bot_marg - bot) > 0)
+	    scrollheight -= i;
+	if ((i = screen->cur_row + refreshheight - 1 - bot) > 0)
+	    refreshheight -= i;
+	vertical_copy_area(screen, scrolltop - n, scrollheight, -n);
+	if (refreshheight > 0) {
+	    ClearCurBackground(screen,
+			       (int) refreshtop * FontHeight(screen) + screen->border,
+			       (int) OriginX(screen),
+			       (unsigned) refreshheight * FontHeight(screen),
+			       (unsigned) Width(screen));
+	}
+    }
+    if (n > 0) {
+	ScrnInsertLine(screen,
+		       screen->visbuf,
+		       screen->bot_marg,
+		       screen->cur_row,
+		       (unsigned) n,
+		       (unsigned) MaxCols(screen));
+    }
+}
+
+/*
+ * If cursor not in scrolling region, returns.  Else, deletes n lines
+ * at the cursor's position, lines added at bottom margin are blank.
+ */
+void
+DeleteLine(TScreen * screen, int n)
+{
+    int i;
+    int shift;
+    int bot;
+    int refreshtop;
+    int refreshheight;
+    int scrolltop;
+    int scrollheight;
+
+    if (!ScrnIsLineInMargins(screen, screen->cur_row - screen->topline))
+	return;
+
+    TRACE(("DeleteLine count=%d\n", n));
+
+    if (screen->cursor_state)
+	HideCursor();
+
+    if (ScrnHaveSelection(screen)
+	&& ScrnAreLinesInSelection(screen, screen->top_marg, screen->bot_marg)) {
+	ScrnDisownSelection(screen);
+    }
+
+    screen->do_wrap = 0;
+    if (n > (i = screen->bot_marg - screen->cur_row + 1))
+	n = i;
+    if (screen->jumpscroll) {
+	if (screen->scroll_amt >= 0 && screen->cur_row == screen->top_marg) {
+	    if (screen->refresh_amt + n > MaxRows(screen))
+		FlushScroll(screen);
+	    screen->scroll_amt += n;
+	    screen->refresh_amt += n;
+	} else if (screen->scroll_amt)
+	    FlushScroll(screen);
+    }
+    if (!screen->scroll_amt) {
+
+	shift = -screen->topline;
+	bot = screen->max_row - shift;
+	scrollheight = i - n;
+	refreshheight = n;
+	if ((refreshtop = screen->bot_marg - refreshheight + 1 + shift) >
+	    (i = screen->max_row - refreshheight + 1))
+	    refreshtop = i;
+	if (screen->scrollWidget && !screen->alternate && screen->cur_row == 0) {
+	    scrolltop = 0;
+	    if ((scrollheight += shift) > i)
+		scrollheight = i;
+	    if ((i = screen->savedlines) < screen->savelines) {
+		if ((i += n) > screen->savelines)
+		    i = screen->savelines;
+		screen->savedlines = i;
+		ScrollBarDrawThumb(screen->scrollWidget);
+	    }
+	} else {
+	    scrolltop = screen->cur_row + shift;
+	    if ((i = screen->bot_marg - bot) > 0) {
+		scrollheight -= i;
+		if ((i = screen->cur_row + n - 1 - bot) >= 0) {
+		    refreshheight -= i;
+		}
+	    }
+	}
+	vertical_copy_area(screen, scrolltop + n, scrollheight, n);
+	if (refreshheight > 0) {
+	    ClearCurBackground(screen,
+			       (int) refreshtop * FontHeight(screen) + screen->border,
+			       (int) OriginX(screen),
+			       (unsigned) refreshheight * FontHeight(screen),
+			       (unsigned) Width(screen));
+	}
+    }
+    /* adjust screen->buf */
+    if (n > 0) {
+	if (screen->scrollWidget
+	    && !screen->alternate
+	    && screen->cur_row == 0)
+	    ScrnDeleteLine(screen,
+			   screen->allbuf,
+			   screen->bot_marg + screen->savelines,
+			   0,
+			   (unsigned) n,
+			   (unsigned) MaxCols(screen));
+	else
+	    ScrnDeleteLine(screen,
+			   screen->visbuf,
+			   screen->bot_marg,
+			   screen->cur_row,
+			   (unsigned) n,
+			   (unsigned) MaxCols(screen));
+    }
+}
+
+/*
+ * Insert n blanks at the cursor's position, no wraparound
+ */
+void
+InsertChar(TScreen * screen, unsigned n)
+{
+    unsigned limit;
+    int row = screen->cur_row - screen->topline;
+
+    if (screen->cursor_state)
+	HideCursor();
+
+    TRACE(("InsertChar count=%d\n", n));
+
+    if (ScrnHaveSelection(screen)
+	&& ScrnIsLineInSelection(screen, row)) {
+	ScrnDisownSelection(screen);
+    }
+    screen->do_wrap = 0;
+
+    assert(screen->cur_col <= screen->max_col);
+    limit = MaxCols(screen) - screen->cur_col;
+
+    if (n > limit)
+	n = limit;
+
+    assert(n != 0);
+    if (row <= screen->max_row) {
+	if (!AddToRefresh(screen)) {
+	    int col = MaxCols(screen) - n;
+	    if (screen->scroll_amt)
+		FlushScroll(screen);
+
+#if OPT_DEC_CHRSET
+	    if (CSET_DOUBLE(SCRN_BUF_CSETS(screen, screen->cur_row)[0])) {
+		col = MaxCols(screen) / 2 - n;
+	    }
+#endif
+	    /*
+	     * prevent InsertChar from shifting the end of a line over
+	     * if it is being appended to
+	     */
+	    if (non_blank_line(screen->visbuf, screen->cur_row,
+			       screen->cur_col, MaxCols(screen)))
+		horizontal_copy_area(screen, screen->cur_col,
+				     col - screen->cur_col,
+				     (int) n);
+
+	    ClearCurBackground(screen,
+			       CursorY(screen, screen->cur_row),
+			       CurCursorX(screen, screen->cur_row, screen->cur_col),
+			       (unsigned) FontHeight(screen),
+			       n * CurFontWidth(screen, screen->cur_row));
+	}
+    }
+    /* adjust screen->buf */
+    ScrnInsertChar(screen, n);
+}
+
+/*
+ * Deletes n chars at the cursor's position, no wraparound.
+ */
+void
+DeleteChar(TScreen * screen, unsigned n)
+{
+    unsigned limit;
+    int row = screen->cur_row - screen->topline;
+
+    if (screen->cursor_state)
+	HideCursor();
+
+    TRACE(("DeleteChar count=%d\n", n));
+
+    if (ScrnHaveSelection(screen)
+	&& ScrnIsLineInSelection(screen, row)) {
+	ScrnDisownSelection(screen);
+    }
+    screen->do_wrap = 0;
+
+    assert(screen->cur_col <= screen->max_col);
+    limit = MaxCols(screen) - screen->cur_col;
+
+    if (n > limit)
+	n = limit;
+
+    assert(n != 0);
+    if (row <= screen->max_row) {
+	if (!AddToRefresh(screen)) {
+	    int col = MaxCols(screen) - n;
+	    if (screen->scroll_amt)
+		FlushScroll(screen);
+
+#if OPT_DEC_CHRSET
+	    if (CSET_DOUBLE(SCRN_BUF_CSETS(screen, screen->cur_row)[0])) {
+		col = MaxCols(screen) / 2 - n;
+	    }
+#endif
+	    horizontal_copy_area(screen,
+				 (int) (screen->cur_col + n),
+				 col - screen->cur_col,
+				 -((int) n));
+
+	    ClearCurBackground(screen,
+			       CursorY(screen, screen->cur_row),
+			       CurCursorX(screen, screen->cur_row, col),
+			       (unsigned) FontHeight(screen),
+			       n * CurFontWidth(screen, screen->cur_row));
+	}
+    }
+    if (n > 0) {
+	/* adjust screen->buf */
+	ScrnDeleteChar(screen, (unsigned) n);
+    }
+}
+
+/*
+ * Clear from cursor position to beginning of display, inclusive.
+ */
+static void
+ClearAbove(TScreen * screen)
+{
+    if (screen->protected_mode != OFF_PROTECT) {
+	int row;
+	unsigned len = MaxCols(screen);
+
+	assert(screen->max_col >= 0);
+	for (row = 0; row <= screen->max_row; row++)
+	    ClearInLine(screen, row, 0, len);
+    } else {
+	int top, height;
+
+	if (screen->cursor_state)
+	    HideCursor();
+	if ((top = -screen->topline) <= screen->max_row) {
+	    if (screen->scroll_amt)
+		FlushScroll(screen);
+	    if ((height = screen->cur_row + top) > screen->max_row)
+		height = screen->max_row;
+	    if ((height -= top) > 0) {
+		ClearCurBackground(screen,
+				   top * FontHeight(screen) + screen->border,
+				   OriginX(screen),
+				   (unsigned) (height * FontHeight(screen)),
+				   (unsigned) (Width(screen)));
+	    }
+	}
+	ClearBufRows(screen, 0, screen->cur_row - 1);
+    }
+
+    if (screen->cur_row - screen->topline <= screen->max_row)
+	ClearLeft(screen);
+}
+
+/*
+ * Clear from cursor position to end of display, inclusive.
+ */
+static void
+ClearBelow(TScreen * screen)
+{
+    ClearRight(screen, -1);
+
+    if (screen->protected_mode != OFF_PROTECT) {
+	int row;
+	unsigned len = MaxCols(screen);
+
+	assert(screen->max_col >= 0);
+	for (row = screen->cur_row + 1; row <= screen->max_row; row++)
+	    ClearInLine(screen, row, 0, len);
+    } else {
+	int top;
+
+	if ((top = screen->cur_row - screen->topline) <= screen->max_row) {
+	    if (screen->scroll_amt)
+		FlushScroll(screen);
+	    if (++top <= screen->max_row) {
+		ClearCurBackground(screen,
+				   top * FontHeight(screen) + screen->border,
+				   OriginX(screen),
+				   (unsigned) ((screen->max_row - top + 1)
+					       * FontHeight(screen)),
+				   (unsigned) (Width(screen)));
+	    }
+	}
+	ClearBufRows(screen, screen->cur_row + 1, screen->max_row);
+    }
+}
+
+/*
+ * Clear the given row, for the given range of columns, returning 1 if no
+ * protected characters were found, 0 otherwise.
+ */
+static int
+ClearInLine(TScreen * screen, int row, int col, unsigned len)
+{
+    int rc = 1;
+    int flags = TERM_COLOR_FLAGS(term);
+
+    TRACE(("ClearInLine(row=%d, col=%d, len=%d) vs %d..%d\n",
+	   row, col, len,
+	   screen->startHRow,
+	   screen->startHCol));
+
+    if (ScrnHaveSelection(screen)
+	&& ScrnIsLineInSelection(screen, row)) {
+	ScrnDisownSelection(screen);
+    }
+
+    /*
+     * If we're clearing to the end of the line, we won't count this as
+     * "drawn" characters.  We'll only do cut/paste on "drawn" characters,
+     * so this has the effect of suppressing trailing blanks from a
+     * selection.
+     */
+    if (col + (int) len < MaxCols(screen)) {
+	flags |= CHARDRAWN;
+    } else {
+	len = MaxCols(screen) - col;
+    }
+
+    /* If we've marked protected text on the screen, we'll have to
+     * check each time we do an erase.
+     */
+    if (screen->protected_mode != OFF_PROTECT) {
+	unsigned n;
+	Char *attrs = SCRN_BUF_ATTRS(screen, row) + col;
+	int saved_mode = screen->protected_mode;
+	Bool done;
+
+	/* disable this branch during recursion */
+	screen->protected_mode = OFF_PROTECT;
+
+	do {
+	    done = True;
+	    for (n = 0; n < len; n++) {
+		if (attrs[n] & PROTECTED) {
+		    rc = 0;	/* found a protected segment */
+		    if (n != 0)
+			ClearInLine(screen, row, col, n);
+		    while ((n < len)
+			   && (attrs[n] & PROTECTED))
+			n++;
+		    done = False;
+		    break;
+		}
+	    }
+	    /* setup for another segment, past the protected text */
+	    if (!done) {
+		attrs += n;
+		col += n;
+		len -= n;
+	    }
+	} while (!done);
+
+	screen->protected_mode = saved_mode;
+	if (len <= 0)
+	    return 0;
+    }
+    /* fall through to the final non-protected segment */
+
+    if (screen->cursor_state)
+	HideCursor();
+    screen->do_wrap = 0;
+
+    if (row - screen->topline <= screen->max_row) {
+	if (!AddToRefresh(screen)) {
+	    if (screen->scroll_amt)
+		FlushScroll(screen);
+	    ClearCurBackground(screen,
+			       CursorY(screen, row),
+			       CurCursorX(screen, row, col),
+			       (unsigned) FontHeight(screen),
+			       len * CurFontWidth(screen, row));
+	}
+    }
+
+    memset(SCRN_BUF_CHARS(screen, row) + col, ' ', len);
+    memset(SCRN_BUF_ATTRS(screen, row) + col, flags, len);
+
+    if_OPT_EXT_COLORS(screen, {
+	memset(SCRN_BUF_FGRND(screen, row) + col, term->sgr_foreground, len);
+	memset(SCRN_BUF_BGRND(screen, row) + col, term->cur_background, len);
+    });
+    if_OPT_ISO_TRADITIONAL_COLORS(screen, {
+	memset(SCRN_BUF_COLOR(screen, row) + col, xtermColorPair(), len);
+    });
+    if_OPT_DEC_CHRSET({
+	memset(SCRN_BUF_CSETS(screen, row) + col,
+	       curXtermChrSet(screen->cur_row), len);
+    });
+    if_OPT_WIDE_CHARS(screen, {
+	memset(SCRN_BUF_WIDEC(screen, row) + col, 0, len);
+	memset(SCRN_BUF_COM1L(screen, row) + col, 0, len);
+	memset(SCRN_BUF_COM1H(screen, row) + col, 0, len);
+	memset(SCRN_BUF_COM2L(screen, row) + col, 0, len);
+	memset(SCRN_BUF_COM2H(screen, row) + col, 0, len);
+    });
+
+    return rc;
+}
+
+/*
+ * Clear the next n characters on the cursor's line, including the cursor's
+ * position.
+ */
+void
+ClearRight(TScreen * screen, int n)
+{
+    unsigned len = (MaxCols(screen) - screen->cur_col);
+
+    assert(screen->max_col >= 0);
+    assert(screen->max_col >= screen->cur_col);
+
+    if (n < 0)			/* the remainder of the line */
+	n = MaxCols(screen);
+    if (n == 0)			/* default for 'ECH' */
+	n = 1;
+
+    if (len > (unsigned) n)
+	len = n;
+
+    (void) ClearInLine(screen, screen->cur_row, screen->cur_col, len);
+
+    /* with the right part cleared, we can't be wrapping */
+    ScrnClrWrapped(screen, screen->cur_row);
+}
+
+/*
+ * Clear first part of cursor's line, inclusive.
+ */
+static void
+ClearLeft(TScreen * screen)
+{
+    unsigned len = screen->cur_col + 1;
+    assert(screen->cur_col >= 0);
+
+    (void) ClearInLine(screen, screen->cur_row, 0, len);
+}
+
+/*
+ * Erase the cursor's line.
+ */
+static void
+ClearLine(TScreen * screen)
+{
+    unsigned len = MaxCols(screen);
+
+    assert(screen->max_col >= 0);
+    (void) ClearInLine(screen, screen->cur_row, 0, len);
+}
+
+void
+ClearScreen(TScreen * screen)
+{
+    int top;
+
+    if (screen->cursor_state)
+	HideCursor();
+
+    ScrnDisownSelection(screen);
+    screen->do_wrap = 0;
+    if ((top = -screen->topline) <= screen->max_row) {
+	if (screen->scroll_amt)
+	    FlushScroll(screen);
+	ClearCurBackground(screen,
+			   top * FontHeight(screen) + screen->border,
+			   OriginX(screen),
+			   (unsigned) ((screen->max_row - top + 1)
+				       * FontHeight(screen)),
+			   (unsigned) Width(screen));
+    }
+    ClearBufRows(screen, 0, screen->max_row);
+}
+
+/*
+ * If we've written protected text DEC-style, and are issuing a non-DEC
+ * erase, temporarily reset the protected_mode flag so that the erase will
+ * ignore the protected flags.
+ */
+void
+do_erase_line(TScreen * screen, int param, int mode)
+{
+    int saved_mode = screen->protected_mode;
+
+    if (saved_mode == DEC_PROTECT
+	&& saved_mode != mode)
+	screen->protected_mode = OFF_PROTECT;
+
+    switch (param) {
+    case -1:			/* DEFAULT */
+    case 0:
+	ClearRight(screen, -1);
+	break;
+    case 1:
+	ClearLeft(screen);
+	break;
+    case 2:
+	ClearLine(screen);
+	break;
+    }
+    screen->protected_mode = saved_mode;
+}
+
+/*
+ * Just like 'do_erase_line()', except that this intercepts ED controls.  If we
+ * clear the whole screen, we'll get the return-value from ClearInLine, and
+ * find if there were any protected characters left.  If not, reset the
+ * protected mode flag in the screen data (it's slower).
+ */
+void
+do_erase_display(TScreen * screen, int param, int mode)
+{
+    int saved_mode = screen->protected_mode;
+
+    if (saved_mode == DEC_PROTECT
+	&& saved_mode != mode)
+	screen->protected_mode = OFF_PROTECT;
+
+    switch (param) {
+    case -1:			/* DEFAULT */
+    case 0:
+	if (screen->cur_row == 0
+	    && screen->cur_col == 0) {
+	    screen->protected_mode = saved_mode;
+	    do_erase_display(screen, 2, mode);
+	    saved_mode = screen->protected_mode;
+	} else
+	    ClearBelow(screen);
+	break;
+
+    case 1:
+	if (screen->cur_row == screen->max_row
+	    && screen->cur_col == screen->max_col) {
+	    screen->protected_mode = saved_mode;
+	    do_erase_display(screen, 2, mode);
+	    saved_mode = screen->protected_mode;
+	} else
+	    ClearAbove(screen);
+	break;
+
+    case 2:
+	/*
+	 * We use 'ClearScreen()' throughout the remainder of the
+	 * program for places where we don't care if the characters are
+	 * protected or not.  So we modify the logic around this call
+	 * on 'ClearScreen()' to handle protected characters.
+	 */
+	if (screen->protected_mode != OFF_PROTECT) {
+	    int row;
+	    int rc = 1;
+	    unsigned len = MaxCols(screen);
+
+	    assert(screen->max_col >= 0);
+	    for (row = 0; row <= screen->max_row; row++)
+		rc &= ClearInLine(screen, row, 0, len);
+	    if (rc != 0)
+		saved_mode = OFF_PROTECT;
+	} else {
+	    ClearScreen(screen);
+	}
+	break;
+
+    case 3:
+	/* xterm addition - erase saved lines. */
+	screen->savedlines = 0;
+	ScrollBarDrawThumb(screen->scrollWidget);
+	break;
+    }
+    screen->protected_mode = saved_mode;
+}
+
+static void
+CopyWait(TScreen * screen)
+{
+    XEvent reply;
+    XEvent *rep = &reply;
+
+    while (1) {
+	XWindowEvent(screen->display, VWindow(screen),
+		     ExposureMask, &reply);
+	switch (reply.type) {
+	case Expose:
+	    HandleExposure(screen, &reply);
+	    break;
+	case NoExpose:
+	case GraphicsExpose:
+	    if (screen->incopy <= 0) {
+		screen->incopy = 1;
+		if (screen->scrolls > 0)
+		    screen->scrolls--;
+	    }
+	    if (reply.type == GraphicsExpose)
+		HandleExposure(screen, &reply);
+
+	    if ((reply.type == NoExpose) ||
+		((XExposeEvent *) rep)->count == 0) {
+		if (screen->incopy <= 0 && screen->scrolls > 0)
+		    screen->scrolls--;
+		if (screen->scrolls == 0) {
+		    screen->incopy = 0;
+		    return;
+		}
+		screen->incopy = -1;
+	    }
+	    break;
+	}
+    }
+}
+
+/*
+ * used by vertical_copy_area and and horizontal_copy_area
+ */
+static void
+copy_area(TScreen * screen,
+	  int src_x,
+	  int src_y,
+	  unsigned width,
+	  unsigned height,
+	  int dest_x,
+	  int dest_y)
+{
+    if (width != 0 && height != 0) {
+	/* wait for previous CopyArea to complete unless
+	   multiscroll is enabled and active */
+	if (screen->incopy && screen->scrolls == 0)
+	    CopyWait(screen);
+	screen->incopy = -1;
+
+	/* save for translating Expose events */
+	screen->copy_src_x = src_x;
+	screen->copy_src_y = src_y;
+	screen->copy_width = width;
+	screen->copy_height = height;
+	screen->copy_dest_x = dest_x;
+	screen->copy_dest_y = dest_y;
+
+	XCopyArea(screen->display,
+		  VWindow(screen), VWindow(screen),
+		  NormalGC(screen),
+		  src_x, src_y, width, height, dest_x, dest_y);
+    }
+}
+
+/*
+ * use when inserting or deleting characters on the current line
+ */
+static void
+horizontal_copy_area(TScreen * screen,
+		     int firstchar,	/* char pos on screen to start copying at */
+		     int nchars,
+		     int amount)	/* number of characters to move right */
+{
+    int src_x = CurCursorX(screen, screen->cur_row, firstchar);
+    int src_y = CursorY(screen, screen->cur_row);
+
+    copy_area(screen, src_x, src_y,
+	      (unsigned) nchars * CurFontWidth(screen, screen->cur_row),
+	      (unsigned) FontHeight(screen),
+	      src_x + amount * CurFontWidth(screen, screen->cur_row), src_y);
+}
+
+/*
+ * use when inserting or deleting lines from the screen
+ */
+static void
+vertical_copy_area(TScreen * screen,
+		   int firstline,	/* line on screen to start copying at */
+		   int nlines,
+		   int amount)	/* number of lines to move up (neg=down) */
+{
+    if (nlines > 0) {
+	int src_x = OriginX(screen);
+	int src_y = firstline * FontHeight(screen) + screen->border;
+
+	copy_area(screen, src_x, src_y,
+		  (unsigned) Width(screen),
+		  (unsigned) (nlines * FontHeight(screen)),
+		  src_x, src_y - amount * FontHeight(screen));
+    }
+}
+
+/*
+ * use when scrolling the entire screen
+ */
+void
+scrolling_copy_area(TScreen * screen,
+		    int firstline,	/* line on screen to start copying at */
+		    int nlines,
+		    int amount)	/* number of lines to move up (neg=down) */
+{
+
+    if (nlines > 0) {
+	vertical_copy_area(screen, firstline, nlines, amount);
+    }
+}
+
+/*
+ * Handler for Expose events on the VT widget.
+ * Returns 1 iff the area where the cursor was got refreshed.
+ */
+int
+HandleExposure(TScreen * screen, XEvent * event)
+{
+    XExposeEvent *reply = (XExposeEvent *) event;
+
+#ifndef NO_ACTIVE_ICON
+    if (reply->window == screen->iconVwin.window) {
+	WhichVWin(screen) = &screen->iconVwin;
+	TRACE(("HandleExposure - icon"));
+    } else {
+	WhichVWin(screen) = &screen->fullVwin;
+	TRACE(("HandleExposure - normal"));
+    }
+    TRACE((" event %d,%d %dx%d\n",
+	   reply->y,
+	   reply->x,
+	   reply->height,
+	   reply->width));
+#endif /* NO_ACTIVE_ICON */
+
+    /* if not doing CopyArea or if this is a GraphicsExpose, don't translate */
+    if (!screen->incopy || event->type != Expose)
+	return handle_translated_exposure(screen, reply->x, reply->y,
+					  reply->width,
+					  reply->height);
+    else {
+	/* compute intersection of area being copied with
+	   area being exposed. */
+	int both_x1 = Max(screen->copy_src_x, reply->x);
+	int both_y1 = Max(screen->copy_src_y, reply->y);
+	int both_x2 = Min(screen->copy_src_x + screen->copy_width,
+			  (unsigned) (reply->x + reply->width));
+	int both_y2 = Min(screen->copy_src_y + screen->copy_height,
+			  (unsigned) (reply->y + reply->height));
+	int value = 0;
+
+	/* was anything copied affected? */
+	if (both_x2 > both_x1 && both_y2 > both_y1) {
+	    /* do the copied area */
+	    value = handle_translated_exposure
+		(screen, reply->x + screen->copy_dest_x - screen->copy_src_x,
+		 reply->y + screen->copy_dest_y - screen->copy_src_y,
+		 reply->width, reply->height);
+	}
+	/* was anything not copied affected? */
+	if (reply->x < both_x1 || reply->y < both_y1
+	    || reply->x + reply->width > both_x2
+	    || reply->y + reply->height > both_y2)
+	    value = handle_translated_exposure(screen, reply->x, reply->y,
+					       reply->width, reply->height);
+
+	return value;
+    }
+}
+
+/*
+ * Called by the ExposeHandler to do the actual repaint after the coordinates
+ * have been translated to allow for any CopyArea in progress.
+ * The rectangle passed in is pixel coordinates.
+ */
+static int
+handle_translated_exposure(TScreen * screen,
+			   int rect_x,
+			   int rect_y,
+			   int rect_width,
+			   int rect_height)
+{
+    int toprow, leftcol, nrows, ncols;
+    int x0, x1;
+    int y0, y1;
+
+    TRACE(("handle_translated_exposure at %d,%d size %dx%d\n",
+	   rect_y, rect_x, rect_height, rect_width));
+
+    x0 = (rect_x - OriginX(screen));
+    x1 = (x0 + rect_width);
+
+    y0 = (rect_y - OriginY(screen));
+    y1 = (y0 + rect_height);
+
+    toprow = y0 / FontHeight(screen);
+    if (toprow < 0)
+	toprow = 0;
+
+    leftcol = x0 / CurFontWidth(screen, screen->cur_row);
+    if (leftcol < 0)
+	leftcol = 0;
+
+    nrows = (y1 - 1) / FontHeight(screen) - toprow + 1;
+    ncols = (x1 - 1) / FontWidth(screen) - leftcol + 1;
+    toprow -= screen->scrolls;
+    if (toprow < 0) {
+	nrows += toprow;
+	toprow = 0;
+    }
+    if (toprow + nrows > MaxRows(screen))
+	nrows = MaxRows(screen) - toprow;
+    if (leftcol + ncols > MaxCols(screen))
+	ncols = MaxCols(screen) - leftcol;
+
+    if (nrows > 0 && ncols > 0) {
+	ScrnRefresh(screen, toprow, leftcol, nrows, ncols, False);
+	if (waiting_for_initial_map) {
+	    first_map_occurred();
+	}
+	if (screen->cur_row >= toprow &&
+	    screen->cur_row < toprow + nrows &&
+	    screen->cur_col >= leftcol &&
+	    screen->cur_col < leftcol + ncols)
+	    return (1);
+
+    }
+    return (0);
+}
+
+/***====================================================================***/
+
+void
+GetColors(XtermWidget tw, ScrnColors * pColors)
+{
+    TScreen *screen = &tw->screen;
+    int n;
+
+    pColors->which = 0;
+    for (n = 0; n < NCOLORS; ++n) {
+	SET_COLOR_VALUE(pColors, n, T_COLOR(screen, n));
+    }
+}
+
+void
+ChangeColors(XtermWidget tw, ScrnColors * pNew)
+{
+    TScreen *screen = &tw->screen;
+#if OPT_TEK4014
+    Window tek = TWindow(screen);
+#endif
+
+    TRACE(("ChangeColors\n"));
+
+    if (COLOR_DEFINED(pNew, TEXT_CURSOR)) {
+	T_COLOR(screen, TEXT_CURSOR) = COLOR_VALUE(pNew, TEXT_CURSOR);
+	TRACE(("... TEXT_CURSOR: %#lx\n", T_COLOR(screen, TEXT_CURSOR)));
+    } else if ((T_COLOR(screen, TEXT_CURSOR) == T_COLOR(screen, TEXT_FG)) &&
+	       (COLOR_DEFINED(pNew, TEXT_FG))) {
+	T_COLOR(screen, TEXT_CURSOR) = COLOR_VALUE(pNew, TEXT_FG);
+	TRACE(("... TEXT_CURSOR: %#lx\n", T_COLOR(screen, TEXT_CURSOR)));
+    }
+
+    if (COLOR_DEFINED(pNew, TEXT_FG)) {
+	Pixel fg = COLOR_VALUE(pNew, TEXT_FG);
+	T_COLOR(screen, TEXT_FG) = fg;
+	TRACE(("... TEXT_FG: %#lx\n", T_COLOR(screen, TEXT_FG)));
+	XSetForeground(screen->display, NormalGC(screen), fg);
+	XSetBackground(screen->display, ReverseGC(screen), fg);
+	XSetForeground(screen->display, NormalBoldGC(screen), fg);
+	XSetBackground(screen->display, ReverseBoldGC(screen), fg);
+    }
+
+    if (COLOR_DEFINED(pNew, TEXT_BG)) {
+	Pixel bg = COLOR_VALUE(pNew, TEXT_BG);
+	T_COLOR(screen, TEXT_BG) = bg;
+	TRACE(("... TEXT_BG: %#lx\n", T_COLOR(screen, TEXT_BG)));
+	XSetBackground(screen->display, NormalGC(screen), bg);
+	XSetForeground(screen->display, ReverseGC(screen), bg);
+	XSetBackground(screen->display, NormalBoldGC(screen), bg);
+	XSetForeground(screen->display, ReverseBoldGC(screen), bg);
+	XSetWindowBackground(screen->display, VWindow(screen),
+			     T_COLOR(screen, TEXT_BG));
+    }
+#if OPT_HIGHLIGHT_COLOR
+    if (COLOR_DEFINED(pNew, HIGHLIGHT_BG)) {
+	T_COLOR(screen, HIGHLIGHT_BG) = COLOR_VALUE(pNew, HIGHLIGHT_BG);
+	TRACE(("... HIGHLIGHT_BG: %#lx\n", T_COLOR(screen, HIGHLIGHT_BG)));
+    }
+#endif
+
+    if (COLOR_DEFINED(pNew, MOUSE_FG) || (COLOR_DEFINED(pNew, MOUSE_BG))) {
+	if (COLOR_DEFINED(pNew, MOUSE_FG)) {
+	    T_COLOR(screen, MOUSE_FG) = COLOR_VALUE(pNew, MOUSE_FG);
+	    TRACE(("... MOUSE_FG: %#lx\n", T_COLOR(screen, MOUSE_FG)));
+	}
+	if (COLOR_DEFINED(pNew, MOUSE_BG)) {
+	    T_COLOR(screen, MOUSE_BG) = COLOR_VALUE(pNew, MOUSE_BG);
+	    TRACE(("... MOUSE_BG: %#lx\n", T_COLOR(screen, MOUSE_BG)));
+	}
+
+	recolor_cursor(screen->pointer_cursor,
+		       T_COLOR(screen, MOUSE_FG),
+		       T_COLOR(screen, MOUSE_BG));
+	recolor_cursor(screen->arrow,
+		       T_COLOR(screen, MOUSE_FG),
+		       T_COLOR(screen, MOUSE_BG));
+	XDefineCursor(screen->display, VWindow(screen),
+		      screen->pointer_cursor);
+
+#if OPT_TEK4014
+	if (tek)
+	    XDefineCursor(screen->display, tek, screen->arrow);
+#endif
+    }
+#if OPT_TEK4014
+    if (COLOR_DEFINED(pNew, TEK_FG) ||
+	COLOR_DEFINED(pNew, TEK_BG) ||
+	COLOR_DEFINED(pNew, TEK_CURSOR)) {
+	ChangeTekColors(screen, pNew);
+    }
+#endif
+    set_cursor_gcs(screen);
+    XClearWindow(screen->display, VWindow(screen));
+    ScrnRefresh(screen, 0, 0, MaxRows(screen),
+		MaxCols(screen), False);
+#if OPT_TEK4014
+    if (screen->Tshow) {
+	XClearWindow(screen->display, tek);
+	TekExpose((Widget) NULL, (XEvent *) NULL, (Region) NULL);
+    }
+#endif
+}
+
+void
+ChangeAnsiColors(XtermWidget tw)
+{
+    TScreen *screen = &tw->screen;
+
+    XClearWindow(screen->display, VWindow(screen));
+    ScrnRefresh(screen, 0, 0,
+		MaxRows(screen),
+		MaxCols(screen), False);
+}
+
+/***====================================================================***/
+
+void
+ReverseVideo(XtermWidget termw)
+{
+    TScreen *screen = &termw->screen;
+    GC tmpGC;
+    Pixel tmp;
+#if OPT_TEK4014
+    Window tek = TWindow(screen);
+#endif
+
+    /*
+     * Swap SGR foreground and background colors.  By convention, these are
+     * the colors assigned to "black" (SGR #0) and "white" (SGR #7).  Also,
+     * SGR #8 and SGR #15 are the bold (or bright) versions of SGR #0 and
+     * #7, respectively.
+     *
+     * We don't swap colors that happen to match the screen's foreground
+     * and background because that tends to produce bizarre effects.
+     */
+    if_OPT_ISO_COLORS(screen, {
+	ColorRes tmp2;
+	EXCHANGE(screen->Acolors[0], screen->Acolors[7], tmp2);
+	EXCHANGE(screen->Acolors[8], screen->Acolors[15], tmp2);
+    });
+
+    tmp = T_COLOR(screen, TEXT_BG);
+    if (T_COLOR(screen, TEXT_CURSOR) == T_COLOR(screen, TEXT_FG))
+	T_COLOR(screen, TEXT_CURSOR) = tmp;
+    T_COLOR(screen, TEXT_BG) = T_COLOR(screen, TEXT_FG);
+    T_COLOR(screen, TEXT_FG) = tmp;
+
+    EXCHANGE(T_COLOR(screen, MOUSE_FG), T_COLOR(screen, MOUSE_BG), tmp);
+    EXCHANGE(NormalGC(screen), ReverseGC(screen), tmpGC);
+    EXCHANGE(NormalBoldGC(screen), ReverseBoldGC(screen), tmpGC);
+#ifndef NO_ACTIVE_ICON
+    tmpGC = screen->iconVwin.normalGC;
+    screen->iconVwin.normalGC = screen->iconVwin.reverseGC;
+    screen->iconVwin.reverseGC = tmpGC;
+
+    tmpGC = screen->iconVwin.normalboldGC;
+    screen->iconVwin.normalboldGC = screen->iconVwin.reverseboldGC;
+    screen->iconVwin.reverseboldGC = tmpGC;
+#endif /* NO_ACTIVE_ICON */
+
+    recolor_cursor(screen->pointer_cursor,
+		   T_COLOR(screen, MOUSE_FG),
+		   T_COLOR(screen, MOUSE_BG));
+    recolor_cursor(screen->arrow,
+		   T_COLOR(screen, MOUSE_FG),
+		   T_COLOR(screen, MOUSE_BG));
+
+    termw->misc.re_verse = !termw->misc.re_verse;
+
+    if (XtIsRealized((Widget) termw)) {
+	XDefineCursor(screen->display, VWindow(screen), screen->pointer_cursor);
+    }
+#if OPT_TEK4014
+    if (tek)
+	XDefineCursor(screen->display, tek, screen->arrow);
+#endif
+
+    if (screen->scrollWidget)
+	ScrollBarReverseVideo(screen->scrollWidget);
+
+    if (XtIsRealized((Widget) termw)) {
+	XSetWindowBackground(screen->display, VWindow(screen),
+			     T_COLOR(screen, TEXT_BG));
+
+	/* the shell-window's background will be used in the first repainting
+	 * on resizing
+	 */
+	XSetWindowBackground(screen->display, VShellWindow,
+			     T_COLOR(screen, TEXT_BG));
+    }
+#if OPT_TEK4014
+    TekReverseVideo(screen);
+#endif
+    if (XtIsRealized((Widget) termw)) {
+	XClearWindow(screen->display, VWindow(screen));
+	ScrnRefresh(screen, 0, 0, MaxRows(screen),
+		    MaxCols(screen), False);
+    }
+#if OPT_TEK4014
+    if (screen->Tshow) {
+	XClearWindow(screen->display, tek);
+	TekExpose((Widget) NULL, (XEvent *) NULL, (Region) NULL);
+    }
+#endif
+    ReverseOldColors();
+    update_reversevideo();
+}
+
+void
+recolor_cursor(Cursor cursor,	/* X cursor ID to set */
+	       unsigned long fg,	/* pixel indexes to look up */
+	       unsigned long bg)	/* pixel indexes to look up */
+{
+    TScreen *screen = &term->screen;
+    Display *dpy = screen->display;
+    XColor colordefs[2];	/* 0 is foreground, 1 is background */
+
+    colordefs[0].pixel = fg;
+    colordefs[1].pixel = bg;
+    XQueryColors(dpy, DefaultColormap(dpy, DefaultScreen(dpy)),
+		 colordefs, 2);
+    XRecolorCursor(dpy, cursor, colordefs, colordefs + 1);
+    return;
+}
+
+#if OPT_RENDERFONT
+static XftColor *
+getColor(Pixel pixel)
+{
+#define CACHE_SIZE  4
+    static struct {
+	XftColor color;
+	int use;
+    } cache[CACHE_SIZE];
+    static int use;
+    int i;
+    int oldest, oldestuse;
+    XColor color;
+
+    oldestuse = 0x7fffffff;
+    oldest = 0;
+    for (i = 0; i < CACHE_SIZE; i++) {
+	if (cache[i].use) {
+	    if (cache[i].color.pixel == pixel) {
+		cache[i].use = ++use;
+		return &cache[i].color;
+	    }
+	}
+	if (cache[i].use < oldestuse) {
+	    oldestuse = cache[i].use;
+	    oldest = i;
+	}
+    }
+    i = oldest;
+    color.pixel = pixel;
+    XQueryColor(term->screen.display, term->core.colormap, &color);
+    cache[i].color.color.red = color.red;
+    cache[i].color.color.green = color.green;
+    cache[i].color.color.blue = color.blue;
+    cache[i].color.color.alpha = 0xffff;
+    cache[i].color.pixel = pixel;
+    cache[i].use = ++use;
+    return &cache[i].color;
+}
+
+/*
+ * fontconfig/Xft combination prior to 2.2 has a problem with
+ * CJK truetype 'double-width' (bi-width/monospace) fonts leading
+ * to the 's p a c e d o u t' rendering. Consequently, we can't
+ * rely on XftDrawString8/16  when one of  those fonts is used.
+ * Instead, we need to roll out our own using XftDrawCharSpec.
+ * A patch in the same spirit (but in a rather different form)
+ * was applied to gnome vte and gtk2 port of vim.
+ * See http://bugzilla.mozilla.org/show_bug.cgi?id=196312
+ */
+static void
+xtermXftDrawString(TScreen * screen,
+		   unsigned flags GCC_UNUSED,
+		   XftColor * color,
+		   XftFont * font,
+		   int x,
+		   int y,
+		   PAIRED_CHARS(Char * text, Char * text2),
+		   int len,
+		   int fwidth,
+		   int *deltax)
+{
+#if OPT_RENDERWIDE
+    XftFont *wfont;
+    int n;
+    int ncells = 0;		/* # of 'half-width' charcells */
+    static XftCharSpec *sbuf;
+    static int slen = 0;
+    XftFont *lastFont = 0;
+    XftFont *currFont = 0;
+    int start = 0;
+    int charWidth;
+    FcChar32 wc;
+    int fontnum = screen->menu_font_number;
+
+    if (len == 0 || !(*text || *text2)) {
+	return;
+    }
+#if OPT_ISO_COLORS
+    if ((flags & UNDERLINE)
+	&& screen->italicULMode
+	&& screen->renderWideItal[fontnum]) {
+	wfont = screen->renderWideItal[fontnum];
+    } else
+#endif
+	if ((flags & BOLDATTR(screen))
+	    && screen->renderWideBold[fontnum]) {
+	wfont = screen->renderWideBold[fontnum];
+    } else {
+	wfont = screen->renderWideNorm[fontnum];
+    }
+
+    if ((int) slen < len) {
+	slen = (len + 1) * 2;
+	sbuf = (XftCharSpec *) XtRealloc((char *) sbuf,
+					 slen * sizeof(XftCharSpec));
+    }
+
+    for (n = 0; n < len; n++) {
+	if (text2)
+	    wc = *text++ | (*text2++ << 8);
+	else
+	    wc = *text++;
+	sbuf[n].ucs4 = wc;
+	sbuf[n].x = x + fwidth * ncells;
+	sbuf[n].y = y;
+	charWidth = my_wcwidth((int) wc);
+	currFont = (charWidth == 2 && wfont != 0) ? wfont : font;
+	ncells += charWidth;
+	if (lastFont != currFont) {
+	    if (lastFont != 0) {
+		XftDrawCharSpec(screen->renderDraw,
+				color,
+				lastFont,
+				sbuf + start,
+				n - start);
+	    }
+	    start = n;
+	    lastFont = currFont;
+	}
+    }
+    XftDrawCharSpec(screen->renderDraw,
+		    color,
+		    lastFont,
+		    sbuf + start,
+		    n - start);
+
+    if (deltax)
+	*deltax = ncells * fwidth;
+#else
+
+    XftDrawString8(screen->renderDraw,
+		   color,
+		   font,
+		   x, y, (unsigned char *) text, len);
+    if (deltax)
+	*deltax = len * fwidth;
+#endif
+}
+#endif /* OPT_RENDERFONT */
+
+#define DrawX(col) x + (col * (font_width))
+#define DrawSegment(first,last) (void)drawXtermText(screen, flags|NOTRANSLATION, gc, DrawX(first), y, chrset, PAIRED_CHARS(text+first, text2+first), (unsigned)(last - first), on_wide)
+
+#if OPT_WIDE_CHARS
+/*
+ * Actually this should be called "groff_workaround()" - for the places where
+ * groff stomps on compatibility.  Still, if enough people get used to it,
+ * this might someday become a quasi-standard.
+ */
+static int
+ucs_workaround(TScreen * screen,
+	       unsigned ch,
+	       unsigned flags,
+	       GC gc,
+	       int x,
+	       int y,
+	       int chrset,
+	       int on_wide)
+{
+    int fixed = False;
+
+    if (screen->wide_chars && screen->utf8_mode && ch > 256) {
+	switch (ch) {
+	case 0x2010:		/* groff "-" */
+	case 0x2011:
+	case 0x2012:
+	case 0x2013:
+	case 0x2014:
+	case 0x2015:
+	case 0x2212:		/* groff "\-" */
+	    ch = '-';
+	    fixed = True;
+	    break;
+	case 0x2018:		/* groff "`" */
+	    ch = '`';
+	    fixed = True;
+	    break;
+	case 0x2019:		/* groff ' */
+	    ch = '\'';
+	    fixed = True;
+	    break;
+	case 0x201C:		/* groff lq */
+	case 0x201D:		/* groff rq */
+	    ch = '"';
+	    fixed = True;
+	    break;
+	}
+	if (fixed) {
+	    Char text[2];
+	    Char text2[2];
+
+	    text[0] = ch;
+	    text2[0] = 0;
+	    drawXtermText(screen,
+			  flags,
+			  gc,
+			  x,
+			  y,
+			  chrset,
+			  PAIRED_CHARS(text, text2),
+			  1,
+			  on_wide);
+	}
+    }
+    return fixed;
+}
+#endif
+
+#if OPT_CLIP_BOLD
+/*
+ * This special case is a couple of percent slower, but avoids a lot of pixel
+ * trash in rxcurses' hanoi.cmd demo (e.g., 10x20 font).
+ */
+#define beginClipping(screen,gc,pwidth,plength) \
+	    if (pwidth > 2) { \
+		XRectangle clip; \
+		int clip_x = x; \
+		int clip_y = y - FontHeight(screen) + FontDescent(screen); \
+		clip.x = 0; \
+		clip.y = 0; \
+		clip.height = FontHeight(screen); \
+		clip.width = pwidth * plength; \
+		XSetClipRectangles(screen->display, gc, \
+				   clip_x, clip_y, \
+				   &clip, 1, Unsorted); \
+	    }
+#define endClipping(screen,gc) \
+	    XSetClipMask(screen->display, gc, None)
+#else
+#define beginClipping(screen,gc,pwidth,plength)		/* nothing */
+#define endClipping(screen,gc)	/* nothing */
+#endif /* OPT_CLIP_BOLD */
+
+/*
+ * Draws text with the specified combination of bold/underline.  The return
+ * value is the updated x position.
+ */
+int
+drawXtermText(TScreen * screen,
+	      unsigned flags,
+	      GC gc,
+	      int x,
+	      int y,
+	      int chrset,
+	      PAIRED_CHARS(Char * text, Char * text2),
+	      Cardinal len,
+	      int on_wide)
+{
+    int real_length = len;
+    int underline_len;
+    /* Intended width of the font to draw (as opposed to the actual width of
+       the X font, and the width of the default font) */
+    int font_width = ((flags & DOUBLEWFONT) ? 2 : 1) * screen->fnt_wide;
+    Bool did_ul = False;
+
+#if OPT_WIDE_CHARS
+    /*
+     * It's simpler to pass in a null pointer for text2 in places where
+     * we only use codes through 255.  Fix text2 here so we can increment
+     * it, etc.
+     */
+    if (text2 == 0) {
+	static Char *dbuf;
+	static unsigned dlen;
+	if (dlen <= len) {
+	    dlen = (len + 1) * 2;
+	    dbuf = (Char *) XtRealloc((char *) dbuf, dlen);
+	    memset(dbuf, 0, dlen);
+	}
+	text2 = dbuf;
+    }
+#endif
+#if OPT_DEC_CHRSET
+    if (CSET_DOUBLE(chrset)) {
+	/* We could try drawing double-size characters in the icon, but
+	 * given that the icon font is usually nil or nil2, there
+	 * doesn't seem to be much point.
+	 */
+	GC gc2 = ((!IsIcon(screen) && screen->font_doublesize)
+		  ? xterm_DoubleGC((unsigned) chrset, flags, gc)
+		  : 0);
+
+	TRACE(("DRAWTEXT%c[%4d,%4d] (%d) %d:%.*s\n",
+	       screen->cursor_state == OFF ? ' ' : '*',
+	       y, x, chrset, len, (int) len, text));
+
+	if (gc2 != 0) {		/* draw actual double-sized characters */
+	    /* Update the last-used cache of double-sized fonts */
+	    int inx = xterm_Double_index((unsigned) chrset, flags);
+	    XFontStruct *fs = screen->double_fonts[inx].fs;
+	    XRectangle rect, *rp = &rect;
+	    int nr = 1;
+	    int adjust;
+
+	    font_width *= 2;
+	    flags |= DOUBLEWFONT;
+
+	    rect.x = 0;
+	    rect.y = 0;
+	    rect.width = len * font_width;
+	    rect.height = FontHeight(screen);
+
+	    switch (chrset) {
+	    case CSET_DHL_TOP:
+		rect.y = -(rect.height / 2);
+		y -= rect.y;
+		flags |= DOUBLEHFONT;
+		break;
+	    case CSET_DHL_BOT:
+		rect.y = (rect.height / 2);
+		y -= rect.y;
+		flags |= DOUBLEHFONT;
+		break;
+	    default:
+		nr = 0;
+		break;
+	    }
+
+	    /*
+	     * Though it is the right "size", a given bold font may
+	     * be shifted up by a pixel or two.  Shift it back into
+	     * the clipping rectangle.
+	     */
+	    if (nr != 0) {
+		adjust = fs->ascent
+		    + fs->descent
+		    - (2 * FontHeight(screen));
+		rect.y -= adjust;
+		y += adjust;
+	    }
+
+	    if (nr)
+		XSetClipRectangles(screen->display, gc2,
+				   x, y, rp, nr, YXBanded);
+	    else
+		XSetClipMask(screen->display, gc2, None);
+
+	    /* Call ourselves recursively with the new gc */
+
+	    /*
+	     * If we're trying to use proportional font, or if the
+	     * font server didn't give us what we asked for wrt
+	     * width, position each character independently.
+	     */
+	    if (screen->fnt_prop
+		|| (fs->min_bounds.width != fs->max_bounds.width)
+		|| (fs->min_bounds.width != 2 * FontWidth(screen))) {
+		/* It is hard to fall-through to the main
+		   branch: in a lot of places the check
+		   for the cached font info is for
+		   normal/bold fonts only. */
+		while (len--) {
+		    x = drawXtermText(screen, flags, gc2,
+				      x, y, 0,
+				      PAIRED_CHARS(text++, text2++),
+				      1, on_wide);
+		    x += FontWidth(screen);
+		}
+	    } else {
+		x = drawXtermText(screen, flags, gc2,
+				  x, y, 0,
+				  PAIRED_CHARS(text, text2),
+				  len, on_wide);
+		x += len * FontWidth(screen);
+	    }
+
+	    TRACE(("drawtext [%4d,%4d]\n", y, x));
+	} else {		/* simulate double-sized characters */
+#if OPT_WIDE_CHARS
+	    Char *wide = 0;
+#endif
+	    unsigned need = 2 * len;
+	    Char *temp = TypeMallocN(Char, need);
+	    unsigned n = 0;
+	    if_OPT_WIDE_CHARS(screen, {
+		wide = TypeMallocN(Char, need);
+	    });
+	    while (len--) {
+		if_OPT_WIDE_CHARS(screen, {
+		    wide[n] = *text2++;
+		    wide[n + 1] = 0;
+		});
+		temp[n++] = *text++;
+		temp[n++] = ' ';
+	    }
+	    x = drawXtermText(screen,
+			      flags,
+			      gc,
+			      x, y,
+			      0,
+			      PAIRED_CHARS(temp, wide),
+			      n,
+			      on_wide);
+	    free(temp);
+	    if_OPT_WIDE_CHARS(screen, {
+		free(wide);
+	    });
+	}
+	return x;
+    }
+#endif
+#if OPT_RENDERFONT
+    if (UsingRenderFont(term)) {
+	Display *dpy = screen->display;
+	XftFont *font;
+	XGCValues values;
+	int fontnum = screen->menu_font_number;
+
+	if (!screen->renderDraw) {
+	    int scr;
+	    Drawable draw = VWindow(screen);
+	    Visual *visual;
+
+	    scr = DefaultScreen(dpy);
+	    visual = DefaultVisual(dpy, scr);
+	    screen->renderDraw = XftDrawCreate(dpy, draw, visual,
+					       DefaultColormap(dpy, scr));
+	}
+#if OPT_ISO_COLORS
+	if ((flags & UNDERLINE)
+	    && screen->italicULMode
+	    && screen->renderFontItal[fontnum]) {
+	    font = screen->renderFontItal[fontnum];
+	    did_ul = True;
+	} else
+#endif
+	    if ((flags & BOLDATTR(screen))
+		&& screen->renderFontBold[fontnum]) {
+	    font = screen->renderFontBold[fontnum];
+	} else {
+	    font = screen->renderFontNorm[fontnum];
+	}
+	XGetGCValues(dpy, gc, GCForeground | GCBackground, &values);
+	if (!(flags & NOBACKGROUND))
+	    XftDrawRect(screen->renderDraw,
+			getColor(values.background),
+			x, y,
+			len * FontWidth(screen),
+			(unsigned) FontHeight(screen));
+
+	y += font->ascent;
+#if OPT_BOX_CHARS
+	if (!screen->force_box_chars) {
+	    /* adding code to substitute simulated line-drawing characters */
+	    int last, first = 0;
+	    Dimension old_wide, old_high = 0;
+	    int curX = x;
+
+	    for (last = 0; last < (int) len; last++) {
+		unsigned ch = text[last];
+		int deltax = 0;
+
+		/*
+		 * If we're reading UTF-8 from the client, we may have a
+		 * line-drawing character.  Translate it back to our box-code
+		 * if it is really a line-drawing character (since the
+		 * fonts used by Xft generally do not have correct glyphs),
+		 * or if Xft can tell us that the glyph is really missing.
+		 */
+		if_OPT_WIDE_CHARS(screen, {
+		    unsigned full = (ch | (text2[last] << 8));
+		    unsigned part = ucs2dec(full);
+		    if (xtermIsDecGraphic(part) &&
+			(xtermIsLineDrawing(part)
+			 || xtermXftMissing(term, font, full)))
+			ch = part;
+		    else
+			ch = full;
+		});
+		/*
+		 * If we have one of our box-codes, draw it directly.
+		 */
+		if (xtermIsDecGraphic(ch)) {
+		    /* line drawing character time */
+		    if (last > first) {
+			xtermXftDrawString(screen, flags,
+					   getColor(values.foreground),
+					   font, curX, y,
+					   PAIRED_CHARS(text + first,
+							text2 + first),
+					   last - first,
+					   FontWidth(screen),
+					   &deltax);
+			curX += deltax;
+		    }
+		    old_wide = screen->fnt_wide;
+		    old_high = screen->fnt_high;
+		    screen->fnt_wide = FontWidth(screen);
+		    screen->fnt_high = FontHeight(screen);
+		    xtermDrawBoxChar(term, ch, flags, gc,
+				     curX, y - FontAscent(screen));
+		    curX += FontWidth(screen);
+		    screen->fnt_wide = old_wide;
+		    screen->fnt_high = old_high;
+		    first = last + 1;
+		}
+	    }
+	    if (last > first) {
+		xtermXftDrawString(screen, flags,
+				   getColor(values.foreground),
+				   font, curX, y,
+				   PAIRED_CHARS(text + first, text2 + first),
+				   last - first,
+				   FontWidth(screen),
+				   NULL);
+	    }
+	} else
+#endif /* OPT_BOX_CHARS */
+	{
+	    xtermXftDrawString(screen, flags,
+			       getColor(values.foreground),
+			       font, x, y, PAIRED_CHARS(text, text2),
+			       (int) len, FontWidth(screen), NULL);
+	}
+
+	if ((flags & UNDERLINE) && screen->underline && !did_ul) {
+	    if (FontDescent(screen) > 1)
+		y++;
+	    XDrawLine(screen->display, VWindow(screen), gc,
+		      x, y,
+		      x + (int) len * FontWidth(screen) - 1,
+		      y);
+	}
+	return x + len * FontWidth(screen);
+    }
+#endif /* OPT_RENDERFONT */
+    /*
+     * If we're asked to display a proportional font, do this with a fixed
+     * pitch.  Yes, it's ugly.  But we cannot distinguish the use of xterm
+     * as a dumb terminal vs its use as in fullscreen programs such as vi.
+     * Hint: do not try to use a proportional font in the icon.
+     */
+    if (!IsIcon(screen) && !(flags & CHARBYCHAR) && screen->fnt_prop) {
+	int adj, width;
+	GC fillGC = gc;		/* might be cursorGC */
+	XFontStruct *fs = ((flags & BOLDATTR(screen))
+			   ? BoldFont(screen)
+			   : NormalFont(screen));
+
+#define GC_PAIRS(a,b) \
+	if (gc == a) fillGC = b; \
+	if (gc == b) fillGC = a
+
+	/*
+	 * Fill the area where we'll write the characters, otherwise
+	 * we'll get gaps between them.  The cursor is a special case,
+	 * because the XFillRectangle call only uses the foreground,
+	 * while we've set the cursor color in the background.  So we
+	 * need a special GC for that.
+	 */
+	if (gc == screen->cursorGC
+	    || gc == screen->reversecursorGC)
+	    fillGC = screen->fillCursorGC;
+	GC_PAIRS(NormalGC(screen), ReverseGC(screen));
+	GC_PAIRS(NormalBoldGC(screen), ReverseBoldGC(screen));
+
+	if (!(flags & NOBACKGROUND))
+	    XFillRectangle(screen->display, VWindow(screen), fillGC,
+			   x, y,
+			   len * FontWidth(screen),
+			   (unsigned) FontHeight(screen));
+
+	while (len--) {
+	    width = XTextWidth(fs, (char *) text, 1);
+	    adj = (FontWidth(screen) - width) / 2;
+	    (void) drawXtermText(screen, flags | NOBACKGROUND | CHARBYCHAR,
+				 gc, x + adj, y, chrset,
+				 PAIRED_CHARS(text++, text2++), 1, on_wide);
+	    x += FontWidth(screen);
+	}
+	return x;
+    }
+#if OPT_BOX_CHARS
+    /* If the font is incomplete, draw some substitutions */
+    if (!IsIcon(screen)
+	&& !(flags & NOTRANSLATION)
+	&& (!screen->fnt_boxes || screen->force_box_chars)) {
+	/* Fill in missing box-characters.
+	   Find regions without missing characters, and draw
+	   them calling ourselves recursively.  Draw missing
+	   characters via xtermDrawBoxChar(). */
+	XFontStruct *font = ((flags & BOLD)
+			     ? BoldFont(screen)
+			     : NormalFont(screen));
+	int last, first = 0;
+	for (last = 0; last < (int) len; last++) {
+	    unsigned ch = text[last];
+	    Bool isMissing;
+#if OPT_WIDE_CHARS
+	    if (text2 != 0)
+		ch |= (text2[last] << 8);
+	    isMissing = (ch != HIDDEN_CHAR)
+		&& (xtermMissingChar(term, ch,
+				     ((on_wide || iswide((int) ch))
+				      && screen->fnt_dwd)
+				     ? screen->fnt_dwd
+				     : font));
+#else
+	    isMissing = xtermMissingChar(term, ch, font);
+#endif
+	    if (isMissing) {
+		if (last > first)
+		    DrawSegment(first, last);
+#if OPT_WIDE_CHARS
+		if (!ucs_workaround(screen, ch, flags, gc, DrawX(last), y,
+				    chrset, on_wide))
+#endif
+		    xtermDrawBoxChar(term, ch, flags, gc, DrawX(last), y);
+		first = last + 1;
+	    }
+	}
+	if (last <= first) {
+	    return x + real_length * FontWidth(screen);
+	}
+	text += first;
+#if OPT_WIDE_CHARS
+	text2 += first;
+#endif
+	len = last - first;
+	flags |= NOTRANSLATION;
+	if (DrawX(first) != x) {
+	    return drawXtermText(screen,
+				 flags,
+				 gc,
+				 DrawX(first),
+				 y,
+				 chrset,
+				 PAIRED_CHARS(text, text2),
+				 len,
+				 on_wide);
+	}
+    }
+#endif /* OPT_BOX_CHARS */
+    /*
+     * Behave as if the font has (maybe Unicode-replacements for) drawing
+     * characters in the range 1-31 (either we were not asked to ignore them,
+     * or the caller made sure that there is none).  The only translation we do
+     * in this branch is the removal of HIDDEN_CHAR (for the wide-char case).
+     */
+    TRACE(("drawtext%c[%4d,%4d] (%d) %d:%s\n",
+	   screen->cursor_state == OFF ? ' ' : '*',
+	   y, x, chrset, len,
+	   visibleChars(PAIRED_CHARS(text, text2), len)));
+    y += FontAscent(screen);
+
+#if OPT_WIDE_CHARS
+    if (screen->wide_chars || screen->unicode_font) {
+	int ascent_adjust = 0;
+	static XChar2b *sbuf;
+	static Cardinal slen;
+	int n;
+	unsigned ch = text[0] | (text2[0] << 8);
+	int wideness = (!IsIcon(screen)
+			&& ((on_wide || iswide((int) ch) != 0)
+			    && (screen->fnt_dwd != NULL)));
+	unsigned char *endtext = text + len;
+	if (slen < len) {
+	    slen = (len + 1) * 2;
+	    sbuf = (XChar2b *) XtRealloc((char *) sbuf, slen * sizeof(*sbuf));
+	}
+	for (n = 0; n < (int) len; n++) {
+	    sbuf[n].byte2 = *text;
+	    sbuf[n].byte1 = *text2;
+#if OPT_MINI_LUIT
+#define UCS2SBUF(n,value)	sbuf[n].byte2 = (value & 0xff);\
+	    			sbuf[n].byte1 = (value >> 8)
+#define Map2Sbuf(n,from,to) (*text == from) { UCS2SBUF(n,to); }
+	    if (screen->latin9_mode && !screen->utf8_mode && *text2 == 0) {
+
+		/* see http://www.cs.tut.fi/~jkorpela/latin9.html */
+		/* *INDENT-OFF* */
+		if Map2Sbuf(n, 0xa4, 0x20ac)
+		else if Map2Sbuf(n, 0xa6, 0x0160)
+		else if Map2Sbuf(n, 0xa8, 0x0161)
+		else if Map2Sbuf(n, 0xb4, 0x017d)
+		else if Map2Sbuf(n, 0xb8, 0x017e)
+		else if Map2Sbuf(n, 0xbc, 0x0152)
+		else if Map2Sbuf(n, 0xbd, 0x0153)
+		else if Map2Sbuf(n, 0xbe, 0x0178)
+		/* *INDENT-ON* */
+
+	    }
+	    if (screen->unicode_font
+		&& *text2 == 0
+		&& (*text == 0x7f || *text < 0x20)) {
+		int ni = dec2ucs(*text == 0x7f ? 0 : *text);
+		UCS2SBUF(n, ni);
+	    }
+#endif /* OPT_MINI_LUIT */
+	    text++;
+	    text2++;
+	    if (wideness) {
+		/* filter out those pesky fake characters. */
+		while (text < endtext
+		       && *text == HIDDEN_HI
+		       && *text2 == HIDDEN_LO) {
+		    text++;
+		    text2++;
+		    len--;
+		}
+	    }
+	}
+	/* This is probably wrong. But it works. */
+	underline_len = len;
+
+	/* Set the drawing font */
+	if (flags & (DOUBLEHFONT | DOUBLEWFONT)) {
+	    ;			/* Do nothing: font is already set */
+	} else if (wideness
+		   && (screen->fnt_dwd->fid || screen->fnt_dwdb->fid)) {
+	    underline_len = real_length = len * 2;
+	    if ((flags & BOLDATTR(screen)) != 0
+		&& screen->fnt_dwdb->fid) {
+		XSetFont(screen->display, gc, screen->fnt_dwdb->fid);
+		ascent_adjust = (screen->fnt_dwdb->ascent
+				 - NormalFont(screen)->ascent);
+	    } else {
+		XSetFont(screen->display, gc, screen->fnt_dwd->fid);
+		ascent_adjust = (screen->fnt_dwd->ascent
+				 - NormalFont(screen)->ascent);
+	    }
+	    /* fix ascent */
+	} else if ((flags & BOLDATTR(screen)) != 0
+		   && BoldFont(screen)->fid) {
+	    XSetFont(screen->display, gc, BoldFont(screen)->fid);
+	} else {
+	    XSetFont(screen->display, gc, NormalFont(screen)->fid);
+	}
+
+	if (flags & NOBACKGROUND)
+	    XDrawString16(screen->display,
+			  VWindow(screen), gc,
+			  x, y + ascent_adjust,
+			  sbuf, n);
+	else
+	    XDrawImageString16(screen->display,
+			       VWindow(screen), gc,
+			       x, y + ascent_adjust,
+			       sbuf, n);
+
+	if ((flags & BOLDATTR(screen)) && screen->enbolden) {
+	    beginClipping(screen, gc, font_width, len);
+	    XDrawString16(screen->display, VWindow(screen), gc,
+			  x + 1, y + ascent_adjust, sbuf, n);
+	    endClipping(screen, gc);
+	}
+
+    } else
+#endif /* OPT_WIDE_CHARS */
+    {
+	int length = len;	/* X should have used unsigned */
+
+	if (flags & NOBACKGROUND)
+	    XDrawString(screen->display, VWindow(screen), gc,
+			x, y, (char *) text, length);
+	else
+	    XDrawImageString(screen->display, VWindow(screen), gc,
+			     x, y, (char *) text, length);
+	underline_len = length;
+	if ((flags & BOLDATTR(screen)) && screen->enbolden) {
+	    beginClipping(screen, gc, font_width, length);
+	    XDrawString(screen->display, VWindow(screen), gc,
+			x + 1, y, (char *) text, length);
+	    endClipping(screen, gc);
+	}
+    }
+
+    if ((flags & UNDERLINE) && screen->underline && !did_ul) {
+	if (FontDescent(screen) > 1)
+	    y++;
+	XDrawLine(screen->display, VWindow(screen), gc,
+		  x, y, x + underline_len * font_width - 1, y);
+    }
+
+    return x + real_length * FontWidth(screen);
+}
+
+/* set up size hints for window manager; min 1 char by 1 char */
+void
+xtermSizeHints(XtermWidget xw, XSizeHints * sizehints, int scrollbarWidth)
+{
+    TScreen *screen = &xw->screen;
+
+    TRACE(("xtermSizeHints\n"));
+    TRACE(("   border    %d\n", xw->core.border_width));
+    TRACE(("   scrollbar %d\n", scrollbarWidth));
+
+    sizehints->base_width = 2 * screen->border + scrollbarWidth;
+    sizehints->base_height = 2 * screen->border;
+
+#if OPT_TOOLBAR
+    TRACE(("   toolbar   %d\n", ToolbarHeight(xw)));
+
+    sizehints->base_height += ToolbarHeight(xw);
+    sizehints->base_height += xw->core.border_width * 2;
+    sizehints->base_width += xw->core.border_width * 2;
+#endif
+
+    sizehints->width_inc = FontWidth(screen);
+    sizehints->height_inc = FontHeight(screen);
+    sizehints->min_width = sizehints->base_width + sizehints->width_inc;
+    sizehints->min_height = sizehints->base_height + sizehints->height_inc;
+
+    sizehints->width = MaxCols(screen) * FontWidth(screen) + sizehints->min_width;
+    sizehints->height = MaxRows(screen) * FontHeight(screen) + sizehints->min_height;
+
+    sizehints->flags |= (PSize | PBaseSize | PMinSize | PResizeInc);
+
+    TRACE_HINTS(sizehints);
+}
+
+/*
+ * Returns a GC, selected according to the font (reverse/bold/normal) that is
+ * required for the current position (implied).  The GC is updated with the
+ * current screen foreground and background colors.
+ */
+GC
+updatedXtermGC(TScreen * screen, unsigned flags, unsigned fg_bg, Bool hilite)
+{
+    int my_fg = extract_fg(fg_bg, flags);
+    int my_bg = extract_bg(fg_bg, flags);
+    Pixel fg_pix = getXtermForeground(flags, my_fg);
+    Pixel bg_pix = getXtermBackground(flags, my_bg);
+    Pixel xx_pix;
+#if OPT_HIGHLIGHT_COLOR
+    Pixel hi_pix = T_COLOR(screen, HIGHLIGHT_BG);
+#endif
+    GC gc;
+
+    checkVeryBoldColors(flags, my_fg);
+
+    if (ReverseOrHilite(screen, flags, hilite)) {
+	if (flags & BOLDATTR(screen))
+	    gc = ReverseBoldGC(screen);
+	else
+	    gc = ReverseGC(screen);
+
+#if OPT_HIGHLIGHT_COLOR
+	if (hi_pix != T_COLOR(screen, TEXT_FG)
+	    && hi_pix != fg_pix
+	    && hi_pix != bg_pix
+	    && hi_pix != term->dft_foreground) {
+	    bg_pix = fg_pix;
+	    fg_pix = hi_pix;
+	}
+#endif
+	xx_pix = bg_pix;
+	bg_pix = fg_pix;
+	fg_pix = xx_pix;
+    } else {
+	if (flags & BOLDATTR(screen))
+	    gc = NormalBoldGC(screen);
+	else
+	    gc = NormalGC(screen);
+
+    }
+
+#if OPT_BLINK_TEXT
+    if ((screen->blink_state == ON) && (!screen->blink_as_bold) && (flags & BLINK)) {
+	fg_pix = bg_pix;
+    }
+#endif
+
+    XSetForeground(screen->display, gc, fg_pix);
+    XSetBackground(screen->display, gc, bg_pix);
+    return gc;
+}
+
+/*
+ * Resets the foreground/background of the GC returned by 'updatedXtermGC()'
+ * to the values that would be set in SGR_Foreground and SGR_Background. This
+ * duplicates some logic, but only modifies 1/4 as many GC's.
+ */
+void
+resetXtermGC(TScreen * screen, unsigned flags, Bool hilite)
+{
+    Pixel fg_pix = getXtermForeground(flags, term->cur_foreground);
+    Pixel bg_pix = getXtermBackground(flags, term->cur_background);
+    GC gc;
+
+    checkVeryBoldColors(flags, term->cur_foreground);
+
+    if (ReverseOrHilite(screen, flags, hilite)) {
+	if (flags & BOLDATTR(screen))
+	    gc = ReverseBoldGC(screen);
+	else
+	    gc = ReverseGC(screen);
+
+	XSetForeground(screen->display, gc, bg_pix);
+	XSetBackground(screen->display, gc, fg_pix);
+
+    } else {
+	if (flags & BOLDATTR(screen))
+	    gc = NormalBoldGC(screen);
+	else
+	    gc = NormalGC(screen);
+
+	XSetForeground(screen->display, gc, fg_pix);
+	XSetBackground(screen->display, gc, bg_pix);
+    }
+}
+
+#if OPT_ISO_COLORS
+/*
+ * Extract the foreground-color index from a one-byte color pair.  If we've got
+ * BOLD or UNDERLINE color-mode active, those will be used.
+ */
+unsigned
+extract_fg(unsigned color, unsigned flags)
+{
+    unsigned fg = ExtractForeground(color);
+
+    if (term->screen.colorAttrMode
+	|| (fg == ExtractBackground(color))) {
+	if (term->screen.colorULMode && (flags & UNDERLINE))
+	    fg = COLOR_UL;
+	if (term->screen.colorBDMode && (flags & BOLD))
+	    fg = COLOR_BD;
+	if (term->screen.colorBLMode && (flags & BLINK))
+	    fg = COLOR_BL;
+    }
+    return fg;
+}
+
+/*
+ * Extract the background-color index from a one-byte color pair.
+ * If we've got INVERSE color-mode active, that will be used.
+ */
+unsigned
+extract_bg(unsigned color, unsigned flags)
+{
+    unsigned bg = ExtractBackground(color);
+
+    if (term->screen.colorAttrMode
+	|| (bg == ExtractForeground(color))) {
+	if (term->screen.colorRVMode && (flags & INVERSE))
+	    bg = COLOR_RV;
+    }
+    return bg;
+}
+
+/*
+ * Combine the current foreground and background into a single 8-bit number.
+ * Note that we're storing the SGR foreground, since cur_foreground may be set
+ * to COLOR_UL, COLOR_BD or COLOR_BL, which would make the code larger than 8
+ * bits.
+ *
+ * This assumes that fg/bg are equal when we override with one of the special
+ * attribute colors.
+ */
+unsigned
+makeColorPair(int fg, int bg)
+{
+    unsigned my_bg = (bg >= 0) && (bg < NUM_ANSI_COLORS) ? (unsigned) bg : 0;
+    unsigned my_fg = (fg >= 0) && (fg < NUM_ANSI_COLORS) ? (unsigned) fg : my_bg;
+#if OPT_EXT_COLORS
+    return (my_fg << 8) | my_bg;
+#else
+    return (my_fg << 4) | my_bg;
+#endif
+}
+
+/*
+ * Using the "current" SGR background, clear a rectangle.
+ */
+void
+ClearCurBackground(TScreen * screen,
+		   int top,
+		   int left,
+		   unsigned height,
+		   unsigned width)
+{
+    XSetWindowBackground(screen->display,
+			 VWindow(screen),
+			 getXtermBackground(term->flags, term->cur_background));
+
+    XClearArea(screen->display, VWindow(screen),
+	       left, top, width, height, False);
+
+    XSetWindowBackground(screen->display,
+			 VWindow(screen),
+			 getXtermBackground(term->flags, MAXCOLORS));
+}
+#endif /* OPT_ISO_COLORS */
+
+/*
+ * Returns a single 8/16-bit number for the given cell
+ */
+unsigned
+getXtermCell(TScreen * screen, int row, int col)
+{
+    unsigned ch = SCRN_BUF_CHARS(screen, row)[col];
+    if_OPT_WIDE_CHARS(screen, {
+	ch |= (SCRN_BUF_WIDEC(screen, row)[col] << 8);
+    });
+    return ch;
+}
+
+/*
+ * Sets a single 8/16-bit number for the given cell
+ */
+void
+putXtermCell(TScreen * screen, int row, int col, int ch)
+{
+    SCRN_BUF_CHARS(screen, row)[col] = ch;
+    if_OPT_WIDE_CHARS(screen, {
+	SCRN_BUF_WIDEC(screen, row)[col] = (ch >> 8);
+	SCRN_BUF_COM1L(screen, row)[col] = 0;
+	SCRN_BUF_COM1H(screen, row)[col] = 0;
+	SCRN_BUF_COM2L(screen, row)[col] = 0;
+	SCRN_BUF_COM2H(screen, row)[col] = 0;
+    });
+}
+
+#if OPT_WIDE_CHARS
+unsigned
+getXtermCellComb1(TScreen * screen, int row, int col)
+{
+    unsigned ch = SCRN_BUF_COM1L(screen, row)[col];
+    ch |= (SCRN_BUF_COM1H(screen, row)[col] << 8);
+    return ch;
+}
+
+unsigned
+getXtermCellComb2(TScreen * screen, int row, int col)
+{
+    unsigned ch = SCRN_BUF_COM2L(screen, row)[col];
+    ch |= (SCRN_BUF_COM2H(screen, row)[col] << 8);
+    return ch;
+}
+
+/*
+ * Add a combining character for the given cell
+ */
+void
+addXtermCombining(TScreen * screen, int row, int col, unsigned ch)
+{
+    if (!SCRN_BUF_COM1L(screen, row)[col]
+	&& !SCRN_BUF_COM1H(screen, row)[col]) {
+	SCRN_BUF_COM1L(screen, row)[col] = ch & 0xff;
+	SCRN_BUF_COM1H(screen, row)[col] = ch >> 8;
+    } else if (!SCRN_BUF_COM2H(screen, row)[col]) {
+	SCRN_BUF_COM2L(screen, row)[col] = ch & 0xff;
+	SCRN_BUF_COM2H(screen, row)[col] = ch >> 8;
+    }
+}
+#endif
+
+#ifdef HAVE_CONFIG_H
+#ifdef USE_MY_MEMMOVE
+char *
+my_memmove(char *s1, char *s2, size_t n)
+{
+    if (n != 0) {
+	if ((s1 + n > s2) && (s2 + n > s1)) {
+	    static char *bfr;
+	    static size_t length;
+	    size_t j;
+	    if (length < n) {
+		length = (n * 3) / 2;
+		bfr = ((bfr != 0)
+		       ? TypeRealloc(char, length, bfr)
+		       : TypeMallocN(char, length));
+		if (bfr == NULL)
+		    SysError(ERROR_MMALLOC);
+	    }
+	    for (j = 0; j < n; j++)
+		bfr[j] = s2[j];
+	    s2 = bfr;
+	}
+	while (n-- != 0)
+	    s1[n] = s2[n];
+    }
+    return s1;
+}
+#endif /* USE_MY_MEMMOVE */
+
+#ifndef HAVE_STRERROR
+char *
+my_strerror(int n)
+{
+    extern char *sys_errlist[];
+    extern int sys_nerr;
+    if (n > 0 && n < sys_nerr)
+	return sys_errlist[n];
+    return "?";
+}
+#endif
+#endif
+
+int
+char2lower(int ch)
+{
+    if (isascii(ch) && isupper(ch)) {	/* lowercasify */
+#ifdef _tolower
+	ch = _tolower(ch);
+#else
+	ch = tolower(ch);
+#endif
+    }
+    return ch;
+}
+
+void
+update_keyboard_type(void)
+{
+    update_delete_del();
+    update_old_fkeys();
+    update_hp_fkeys();
+    update_sco_fkeys();
+    update_sun_fkeys();
+    update_sun_kbd();
+}
+
+void
+set_keyboard_type(xtermKeyboardType type, Bool set)
+{
+    xtermKeyboardType save = term->keyboard.type;
+
+    TRACE(("set_keyboard_type(%s, %s) currently %s\n",
+	   visibleKeyboardType(type),
+	   BtoS(set),
+	   visibleKeyboardType(term->keyboard.type)));
+    if (set) {
+	term->keyboard.type = type;
+    } else {
+	term->keyboard.type = keyboardIsDefault;
+    }
+
+    if (save != term->keyboard.type) {
+	update_keyboard_type();
+    }
+}
+
+void
+toggle_keyboard_type(xtermKeyboardType type)
+{
+    xtermKeyboardType save = term->keyboard.type;
+
+    TRACE(("toggle_keyboard_type(%s) currently %s\n",
+	   visibleKeyboardType(type),
+	   visibleKeyboardType(term->keyboard.type)));
+    if (term->keyboard.type == type) {
+	term->keyboard.type = keyboardIsDefault;
+    } else {
+	term->keyboard.type = type;
+    }
+
+    if (save != term->keyboard.type) {
+	update_keyboard_type();
+    }
+}
+
+void
+init_keyboard_type(xtermKeyboardType type, Bool set)
+{
+    static Bool wasSet = False;
+
+    TRACE(("init_keyboard_type(%s, %s) currently %s\n",
+	   visibleKeyboardType(type),
+	   BtoS(set),
+	   visibleKeyboardType(term->keyboard.type)));
+    if (set) {
+	if (wasSet) {
+	    fprintf(stderr, "Conflicting keyboard type option (%u/%u)\n",
+		    term->keyboard.type, type);
+	}
+	term->keyboard.type = type;
+	wasSet = True;
+	update_keyboard_type();
+    }
+}
+
+/*
+ * If the keyboardType resource is set, use that, overriding the individual
+ * boolean resources for different keyboard types.
+ */
+void
+decode_keyboard_type(XTERM_RESOURCE * rp)
+{
+#define DATA(n, t, f) { n, t, XtOffsetOf(XTERM_RESOURCE, f) }
+#define FLAG(n) *(Boolean *)(((char *)rp) + table[n].offset)
+    static struct {
+	const char *name;
+	xtermKeyboardType type;
+	unsigned offset;
+    } table[] = {
+#if OPT_HP_FUNC_KEYS
+	DATA(NAME_HP_KT, keyboardIsHP, hpFunctionKeys),
+#endif
+#if OPT_SCO_FUNC_KEYS
+	    DATA(NAME_SCO_KT, keyboardIsSCO, scoFunctionKeys),
+#endif
+	    DATA(NAME_SUN_KT, keyboardIsSun, sunFunctionKeys),
+#if OPT_SUNPC_KBD
+	    DATA(NAME_VT220_KT, keyboardIsVT220, sunKeyboard),
+#endif
+    };
+    Cardinal n;
+
+    if (x_strcasecmp(rp->keyboardType, "unknown")) {
+	Bool found = False;
+	for (n = 0; n < XtNumber(table); ++n) {
+	    if (!x_strcasecmp(rp->keyboardType, table[n].name + 1)) {
+		FLAG(n) = True;
+		found = True;
+		init_keyboard_type(table[n].type, FLAG(n));
+	    } else {
+		FLAG(n) = False;
+	    }
+	}
+	if (!found) {
+	    fprintf(stderr,
+		    "KeyboardType resource \"%s\" not found\n",
+		    rp->keyboardType);
+	}
+    } else {
+	for (n = 0; n < XtNumber(table); ++n)
+	    init_keyboard_type(table[n].type, FLAG(n));
+    }
+#undef DATA
+#undef FLAG
+}
+
+#if OPT_WIDE_CHARS
+#if defined(HAVE_WCHAR_H) && defined(HAVE_WCWIDTH)
+/*
+ * If xterm is running in a UTF-8 locale, it is still possible to encounter
+ * old runtime configurations which yield incomplete or inaccurate data.
+ */
+static Bool
+systemWcwidthOk(void)
+{
+    wchar_t n;
+    int oops = 0;
+    int last = 1024;
+
+    for (n = 0; n < last; ++n) {
+	int system_code = wcwidth(n);
+	int intern_code = mk_wcwidth(n);
+
+	/*
+	 * Since mk_wcwidth() is designed to check for nonspacing characters,
+	 * and has rough range-checks for double-width characters, it will
+	 * generally not detect cases where a code has not been assigned.
+	 *
+	 * Some experimentation with GNU libc suggests that up to 1/4 of the
+	 * codes would differ, simply because the runtime library would have a
+	 * table listing the unassigned codes, and return -1 for those.  If
+	 * mk_wcwidth() has no information about a code, it returns 1.  On the
+	 * other hand, if the runtime returns a positive number, the two should
+	 * agree.
+	 *
+	 * The "up to" is measured for 4k, 8k, 16k of data.  With only 1k, the
+	 * number of differences was only 77.  However, that is only one
+	 * system, and this is only a sanity check to avoid using broken
+	 * libraries.
+	 */
+	if ((system_code < 0 && intern_code >= 1)
+	    || (system_code >= 0 && intern_code != system_code)) {
+	    ++oops;
+	}
+    }
+    TRACE(("systemWcwidthOk: %d/%d mismatches\n", oops, last));
+    return (oops < (last / 4));
+}
+#endif /* HAVE_WCWIDTH */
+
+void
+decode_wcwidth(int mode)
+{
+    switch (mode) {
+    default:
+#if defined(HAVE_WCHAR_H) && defined(HAVE_WCWIDTH)
+	if (xtermEnvUTF8() && systemWcwidthOk()) {
+	    my_wcwidth = wcwidth;
+	    TRACE(("using system wcwidth() function\n"));
+	    break;
+	}
+	/* FALLTHRU */
+    case 2:
+#endif
+	my_wcwidth = &mk_wcwidth;
+	TRACE(("using MK wcwidth() function\n"));
+	break;
+    case 3:
+    case 4:
+	my_wcwidth = &mk_wcwidth_cjk;
+	TRACE(("using MK-CJK wcwidth() function\n"));
+	break;
+    }
+}
+#endif