massive reduction of unneeded files

1 files changed, 0 insertions, 1853 deletions

diff --git a/nx-X11/programs/xterm/screen.c b/nx-X11/programs/xterm/screen.c
deleted file mode 100644
index 09712218f..000000000
--- a/nx-X11/programs/xterm/screen.c
+++ /dev/null
@@ -1,1853 +0,0 @@
-/* $XTermId: screen.c,v 1.184 2005/11/03 13:17:28 tom Exp $ */
-
-/*
- *	$Xorg: screen.c,v 1.3 2000/08/17 19:55:09 cpqbld 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.
- */
-
-/* $XFree86: xc/programs/xterm/screen.c,v 3.73 2005/11/03 13:17:28 dickey Exp $ */
-
-/* screen.c */
-
-#include <stdio.h>
-#include <xterm.h>
-#include <error.h>
-#include <data.h>
-#include <xcharmouse.h>
-#include <xterm_io.h>
-
-#if OPT_WIDE_CHARS
-#include <fontutils.h>
-#include <menu.h>
-#endif
-
-#include <assert.h>
-#include <signal.h>
-
-#define getMinRow(screen) ((term->flags & ORIGIN) ? (screen)->top_marg : 0)
-#define getMaxRow(screen) ((term->flags & ORIGIN) ? (screen)->bot_marg : (screen)->max_row)
-#define getMinCol(screen) 0
-#define getMaxCol(screen) ((screen)->max_col)
-
-/*
- * Allocates memory for a 2-dimensional array of chars and returns a pointer
- * thereto.  Each line is formed from a set of char arrays, with an index
- * (i.e., the ScrnBuf type).  The first pointer in the index is reserved for
- * per-line flags, and does not point to data.
- *
- * After the per-line flags, we have a series of pointers to char arrays:  The
- * first one is the actual character array, the second one is the attributes,
- * the third is the foreground and background colors, and the fourth denotes
- * the character set.
- *
- * We store it all as pointers, because of alignment considerations, together
- * with the intention of being able to change the total number of pointers per
- * row according to whether the user wants color or not.
- */
-ScrnBuf
-Allocate(int nrow, int ncol, Char ** addr)
-{
-    ScrnBuf base;
-    Char *tmp;
-    int i, j, k;
-    size_t entries = MAX_PTRS * nrow;
-    size_t length = BUF_PTRS * nrow * ncol;
-
-    if ((base = TypeCallocN(ScrnPtr, entries)) == 0)
-	SysError(ERROR_SCALLOC);
-
-    if ((tmp = TypeCallocN(Char, length)) == 0)
-	SysError(ERROR_SCALLOC2);
-
-    *addr = tmp;
-    for (i = k = 0; i < nrow; i++) {
-	base[k] = 0;		/* per-line flags */
-	k += BUF_HEAD;
-	for (j = BUF_HEAD; j < MAX_PTRS; j++) {
-	    base[k++] = tmp;
-	    tmp += ncol;
-	}
-    }
-
-    return (base);
-}
-
-/*
- *  This is called when the screen is resized.
- *  Returns the number of lines the text was moved down (neg for up).
- *  (Return value only necessary with SouthWestGravity.)
- */
-static int
-Reallocate(ScrnBuf * sbuf,
-	   Char ** sbufaddr,
-	   int nrow,
-	   int ncol,
-	   int oldrow,
-	   int oldcol)
-{
-    ScrnBuf base;
-    Char *tmp;
-    int i, j, k, minrows;
-    size_t mincols;
-    Char *oldbuf;
-    int move_down = 0, move_up = 0;
-    size_t entries = MAX_PTRS * nrow;
-    size_t length = BUF_PTRS * nrow * ncol;
-
-    if (sbuf == NULL || *sbuf == NULL) {
-	return 0;
-    }
-
-    oldbuf = *sbufaddr;
-
-    /*
-     * Special case if oldcol == ncol - straight forward realloc and
-     * update of the additional lines in sbuf
-     *
-     * FIXME: this is a good idea, but doesn't seem to be implemented.
-     * -gildea
-     */
-
-    /*
-     * realloc sbuf, the pointers to all the lines.
-     * If the screen shrinks, remove lines off the top of the buffer
-     * if resizeGravity resource says to do so.
-     */
-    if (nrow < oldrow
-	&& term->misc.resizeGravity == SouthWestGravity) {
-	/* Remove lines off the top of the buffer if necessary. */
-	move_up = (oldrow - nrow)
-	    - (term->screen.max_row - term->screen.cur_row);
-	if (move_up < 0)
-	    move_up = 0;
-	/* Overlapping memmove here! */
-	memmove(*sbuf, *sbuf + (move_up * MAX_PTRS),
-		MAX_PTRS * (oldrow - move_up) * sizeof((*sbuf)[0]));
-    }
-    *sbuf = TypeRealloc(ScrnPtr, entries, *sbuf);
-    if (*sbuf == 0)
-	SysError(ERROR_RESIZE);
-    base = *sbuf;
-
-    /*
-     *  create the new buffer space and copy old buffer contents there
-     *  line by line.
-     */
-    if ((tmp = TypeCallocN(Char, length)) == 0)
-	SysError(ERROR_SREALLOC);
-    *sbufaddr = tmp;
-    minrows = (oldrow < nrow) ? oldrow : nrow;
-    mincols = (oldcol < ncol) ? oldcol : ncol;
-    if (nrow > oldrow
-	&& term->misc.resizeGravity == SouthWestGravity) {
-	/* move data down to bottom of expanded screen */
-	move_down = Min(nrow - oldrow, term->screen.savedlines);
-	tmp += (ncol * move_down * BUF_PTRS);
-    }
-
-    for (i = k = 0; i < minrows; i++) {
-	k += BUF_HEAD;
-	for (j = BUF_HEAD; j < MAX_PTRS; j++) {
-	    memcpy(tmp, base[k++], mincols);
-	    tmp += ncol;
-	}
-    }
-
-    /*
-     * update the pointers in sbuf
-     */
-    for (i = k = 0, tmp = *sbufaddr; i < nrow; i++) {
-	for (j = 0; j < BUF_HEAD; j++)
-	    base[k++] = 0;
-	for (j = BUF_HEAD; j < MAX_PTRS; j++) {
-	    base[k++] = tmp;
-	    tmp += ncol;
-	}
-    }
-
-    /* Now free the old buffer */
-    free(oldbuf);
-
-    return move_down ? move_down : -move_up;	/* convert to rows */
-}
-
-#if OPT_WIDE_CHARS
-#if 0
-static void
-dump_screen(const char *tag,
-	    ScrnBuf sbuf,
-	    Char * sbufaddr,
-	    unsigned nrow,
-	    unsigned ncol)
-{
-    unsigned y, x;
-
-    TRACE(("DUMP %s, ptrs %d\n", tag, term->num_ptrs));
-    TRACE(("  sbuf      %p\n", sbuf));
-    TRACE(("  sbufaddr  %p\n", sbufaddr));
-    TRACE(("  nrow      %d\n", nrow));
-    TRACE(("  ncol      %d\n", ncol));
-
-    for (y = 0; y < nrow; ++y) {
-	ScrnPtr ptr = BUF_CHARS(sbuf, y);
-	TRACE(("%3d:%p:", y, ptr));
-	for (x = 0; x < ncol; ++x) {
-	    Char c = ptr[x];
-	    if (c == 0)
-		c = '~';
-	    TRACE(("%c", c));
-	}
-	TRACE(("\n"));
-    }
-}
-#else
-#define dump_screen(tag, sbuf, sbufaddr, nrow, ncol)	/* nothing */
-#endif
-
-/*
- * This function reallocates memory if changing the number of Buf offsets.
- * The code is based on Reallocate().
- */
-static void
-ReallocateBufOffsets(ScrnBuf * sbuf,
-		     Char ** sbufaddr,
-		     unsigned nrow,
-		     unsigned ncol,
-		     size_t new_max_offsets)
-{
-    unsigned i;
-    int j, k;
-    ScrnBuf base;
-    Char *oldbuf, *tmp;
-    size_t entries, length;
-    /*
-     * As there are 2 buffers (allbuf, altbuf), we cannot change num_ptrs in
-     * this function.  However MAX_PTRS and BUF_PTRS depend on num_ptrs so
-     * change it now and restore the value when done.
-     */
-    int old_max_ptrs = MAX_PTRS;
-
-    assert(nrow != 0);
-    assert(ncol != 0);
-    assert(new_max_offsets != 0);
-
-    dump_screen("before", *sbuf, *sbufaddr, nrow, ncol);
-
-    term->num_ptrs = new_max_offsets;
-
-    entries = MAX_PTRS * nrow;
-    length = BUF_PTRS * nrow * ncol;
-    oldbuf = *sbufaddr;
-
-    *sbuf = TypeRealloc(ScrnPtr, entries, *sbuf);
-    if (*sbuf == 0)
-	SysError(ERROR_RESIZE);
-    base = *sbuf;
-
-    if ((tmp = TypeCallocN(Char, length)) == 0)
-	SysError(ERROR_SREALLOC);
-    *sbufaddr = tmp;
-
-    for (i = k = 0; i < nrow; i++) {
-	k += BUF_HEAD;
-	for (j = BUF_HEAD; j < old_max_ptrs; j++) {
-	    memcpy(tmp, base[k++], ncol);
-	    tmp += ncol;
-	}
-	tmp += ncol * (new_max_offsets - old_max_ptrs);
-    }
-
-    /*
-     * update the pointers in sbuf
-     */
-    for (i = k = 0, tmp = *sbufaddr; i < nrow; i++) {
-	for (j = 0; j < BUF_HEAD; j++)
-	    base[k++] = 0;
-	for (j = BUF_HEAD; j < MAX_PTRS; j++) {
-	    base[k++] = tmp;
-	    tmp += ncol;
-	}
-    }
-
-    /* Now free the old buffer and restore num_ptrs */
-    free(oldbuf);
-    dump_screen("after", *sbuf, *sbufaddr, nrow, ncol);
-
-    term->num_ptrs = old_max_ptrs;
-}
-
-/*
- * This function dynamically adds support for wide-characters.
- */
-void
-ChangeToWide(TScreen * screen)
-{
-    unsigned new_bufoffset = (OFF_COM2H + 1);
-    int savelines = screen->scrollWidget ? screen->savelines : 0;
-
-    if (screen->wide_chars)
-	return;
-
-    TRACE(("ChangeToWide\n"));
-    if (xtermLoadWideFonts(term, True)) {
-	if (savelines < 0)
-	    savelines = 0;
-	ReallocateBufOffsets(&screen->allbuf, &screen->sbuf_address,
-			     (unsigned) (MaxRows(screen) + savelines),
-			     (unsigned) MaxCols(screen),
-			     new_bufoffset);
-	if (screen->altbuf)
-	    ReallocateBufOffsets(&screen->altbuf, &screen->abuf_address,
-				 (unsigned) MaxRows(screen),
-				 (unsigned) MaxCols(screen),
-				 new_bufoffset);
-	screen->wide_chars = True;
-	term->num_ptrs = new_bufoffset;
-	screen->visbuf = &screen->allbuf[MAX_PTRS * savelines];
-	update_font_utf8_mode();
-	SetVTFont(term, screen->menu_font_number, TRUE, NULL);
-    }
-    TRACE(("...ChangeToWide\n"));
-}
-#endif
-
-/*
- * Disown the selection and repaint the area that is highlighted so it is no
- * longer highlighted.
- */
-void
-ScrnDisownSelection(TScreen * screen)
-{
-    if (ScrnHaveSelection(screen)) {
-	DisownSelection(term);
-    }
-}
-
-/*
- * Writes str into buf at screen's current row and column.  Characters are set
- * to match flags.
- */
-void
-ScreenWrite(TScreen * screen,
-	    PAIRED_CHARS(Char * str, Char * str2),
-	    unsigned flags,
-	    unsigned cur_fg_bg,
-	    unsigned length)
-{
-#if OPT_ISO_COLORS
-#if OPT_EXT_COLORS
-    Char *fbf = 0;
-    Char *fbb = 0;
-#else
-    Char *fb = 0;
-#endif
-#endif
-#if OPT_DEC_CHRSET
-    Char *cb = 0;
-#endif
-    Char *attrs;
-    int avail = MaxCols(screen) - screen->cur_col;
-    Char *chars;
-    int wrappedbit;
-#if OPT_WIDE_CHARS
-    Char starcol1, starcol2;
-    Char *comb1l = 0, *comb1h = 0, *comb2l = 0, *comb2h = 0;
-#endif
-    unsigned real_width = visual_width(PAIRED_CHARS(str, str2), length);
-
-    if (avail <= 0)
-	return;
-    if (length > (unsigned) avail)
-	length = avail;
-    if (length == 0 || real_width == 0)
-	return;
-
-    chars = SCRN_BUF_CHARS(screen, screen->cur_row) + screen->cur_col;
-    attrs = SCRN_BUF_ATTRS(screen, screen->cur_row) + screen->cur_col;
-
-    if_OPT_WIDE_CHARS(screen, {
-	comb1l = SCRN_BUF_COM1L(screen, screen->cur_row) + screen->cur_col;
-	comb1h = SCRN_BUF_COM1H(screen, screen->cur_row) + screen->cur_col;
-	comb2l = SCRN_BUF_COM2L(screen, screen->cur_row) + screen->cur_col;
-	comb2h = SCRN_BUF_COM2H(screen, screen->cur_row) + screen->cur_col;
-    });
-
-    if_OPT_EXT_COLORS(screen, {
-	fbf = SCRN_BUF_FGRND(screen, screen->cur_row) + screen->cur_col;
-	fbb = SCRN_BUF_BGRND(screen, screen->cur_row) + screen->cur_col;
-    });
-    if_OPT_ISO_TRADITIONAL_COLORS(screen, {
-	fb = SCRN_BUF_COLOR(screen, screen->cur_row) + screen->cur_col;
-    });
-    if_OPT_DEC_CHRSET({
-	cb = SCRN_BUF_CSETS(screen, screen->cur_row) + screen->cur_col;
-    });
-
-    wrappedbit = ScrnTstWrapped(screen, screen->cur_row);
-
-#if OPT_WIDE_CHARS
-    starcol1 = *chars;
-    starcol2 = chars[length - 1];
-#endif
-
-    /* write blanks if we're writing invisible text */
-    if (flags & INVISIBLE) {
-	memset(chars, ' ', length);
-    } else {
-	memcpy(chars, str, length);	/* This can stand for the present. If it
-					   is wrong, we will scribble over it */
-    }
-
-#if OPT_BLINK_TEXT
-    if ((flags & BLINK) && !(screen->blink_as_bold)) {
-	ScrnSetBlinked(screen, screen->cur_row);
-    }
-#endif
-
-#define ERROR_1 0x20
-#define ERROR_2 0x00
-    if_OPT_WIDE_CHARS(screen, {
-
-	Char *char2;
-
-	if (real_width != length) {
-	    Char *char1 = chars;
-	    char2 = SCRN_BUF_WIDEC(screen, screen->cur_row);
-	    char2 += screen->cur_col;
-	    if (screen->cur_col && starcol1 == HIDDEN_LO && *char2 == HIDDEN_HI
-		&& iswide(char1[-1] | (char2[-1] << 8))) {
-		char1[-1] = ERROR_1;
-		char2[-1] = ERROR_2;
-	    }
-	    /* if we are overwriting the right hand half of a
-	       wide character, make the other half vanish */
-	    while (length) {
-		int ch = *str;
-		if (str2)
-		    ch |= *str2 << 8;
-
-		*char1 = *str;
-		char1++;
-		str++;
-
-		if (str2) {
-		    *char2 = *str2;
-		    str2++;
-		} else
-		    *char2 = 0;
-		char2++;
-		length--;
-
-		if (iswide(ch)) {
-		    *char1 = HIDDEN_LO;
-		    *char2 = HIDDEN_HI;
-		    char1++;
-		    char2++;
-		}
-	    }
-
-	    if (*char1 == HIDDEN_LO
-		&& *char2 == HIDDEN_HI
-		&& char1[-1] == HIDDEN_LO
-		&& char2[-1] == HIDDEN_HI) {
-		*char1 = ERROR_1;
-		*char2 = ERROR_2;
-	    }
-	    /* if we are overwriting the left hand half of a
-	       wide character, make the other half vanish */
-	}
-
-	else {
-
-	    if ((char2 = SCRN_BUF_WIDEC(screen, screen->cur_row)) != 0) {
-		char2 += screen->cur_col;
-		if (screen->cur_col && starcol1 == HIDDEN_LO && *char2 == HIDDEN_HI
-		    && iswide(chars[-1] | (char2[-1] << 8))) {
-		    chars[-1] = ERROR_1;
-		    char2[-1] = ERROR_2;
-		}
-		/* if we are overwriting the right hand half of a
-		   wide character, make the other half vanish */
-		if (chars[length] == HIDDEN_LO && char2[length] == HIDDEN_HI &&
-		    iswide(starcol2 | (char2[length - 1] << 8))) {
-		    chars[length] = ERROR_1;
-		    char2[length] = ERROR_2;
-		}
-		/* if we are overwriting the left hand half of a
-		   wide character, make the other half vanish */
-		if ((flags & INVISIBLE) || (str2 == 0))
-		    memset(char2, 0, length);
-		else
-		    memcpy(char2, str2, length);
-	    }
-	}
-    });
-
-    flags &= ATTRIBUTES;
-    flags |= CHARDRAWN;
-    memset(attrs, (Char) flags, real_width);
-
-    if_OPT_WIDE_CHARS(screen, {
-	memset(comb1l, 0, real_width);
-	memset(comb2l, 0, real_width);
-	memset(comb1h, 0, real_width);
-	memset(comb2h, 0, real_width);
-    });
-    if_OPT_EXT_COLORS(screen, {
-	memset(fbf, (Char) (cur_fg_bg >> 8), real_width);
-	memset(fbb, (Char) (cur_fg_bg & 0xff), real_width);
-    });
-    if_OPT_ISO_TRADITIONAL_COLORS(screen, {
-	memset(fb, cur_fg_bg, real_width);
-    });
-    if_OPT_DEC_CHRSET({
-	memset(cb, curXtermChrSet(screen->cur_row), real_width);
-    });
-
-    if (wrappedbit)
-	ScrnSetWrapped(screen, screen->cur_row);
-    else
-	ScrnClrWrapped(screen, screen->cur_row);
-
-    if_OPT_WIDE_CHARS(screen, {
-	screen->last_written_col = screen->cur_col + real_width - 1;
-	screen->last_written_row = screen->cur_row;
-    });
-
-    if_OPT_XMC_GLITCH(screen, {
-	Resolve_XMC(screen);
-    });
-}
-
-/*
- * Saves pointers to the n lines beginning at sb + where, and clears the lines
- */
-static void
-ScrnClearLines(TScreen * screen, ScrnBuf sb, int where, unsigned n, unsigned size)
-{
-    int i, j;
-    size_t len = ScrnPointers(screen, n);
-    int last = (n * MAX_PTRS);
-
-    TRACE(("ScrnClearLines(where %d, n %d, size %d)\n", where, n, size));
-
-    assert(n != 0);
-    assert(size != 0);
-
-    /* save n lines at where */
-    memcpy((char *) screen->save_ptr,
-	   (char *) &sb[MAX_PTRS * where],
-	   len);
-
-    /* clear contents of old rows */
-    if (TERM_COLOR_FLAGS(term)) {
-	int flags = TERM_COLOR_FLAGS(term);
-	for (i = 0; i < last; i += MAX_PTRS) {
-	    for (j = 0; j < MAX_PTRS; j++) {
-		if (j < BUF_HEAD)
-		    screen->save_ptr[i + j] = 0;
-		else if (j == OFF_ATTRS)
-		    memset(screen->save_ptr[i + j], flags, size);
-#if OPT_ISO_COLORS
-#if OPT_EXT_COLORS
-		else if (j == OFF_FGRND)
-		    memset(screen->save_ptr[i + j], term->sgr_foreground, size);
-		else if (j == OFF_BGRND)
-		    memset(screen->save_ptr[i + j], term->cur_background, size);
-#else
-		else if (j == OFF_COLOR)
-		    memset(screen->save_ptr[i + j], xtermColorPair(), size);
-#endif
-#endif
-		else
-		    bzero(screen->save_ptr[i + j], size);
-	    }
-	}
-    } else {
-	for (i = 0; i < last; i += MAX_PTRS) {
-	    for (j = 0; j < BUF_HEAD; j++)
-		screen->save_ptr[i + j] = 0;
-	    for (j = BUF_HEAD; j < MAX_PTRS; j++)
-		bzero(screen->save_ptr[i + j], size);
-	}
-    }
-}
-
-size_t
-ScrnPointers(TScreen * screen, size_t len)
-{
-    len *= MAX_PTRS;
-
-    if (len > screen->save_len) {
-	if (screen->save_len)
-	    screen->save_ptr = TypeRealloc(ScrnPtr, len, screen->save_ptr);
-	else
-	    screen->save_ptr = TypeMallocN(ScrnPtr, len);
-	screen->save_len = len;
-	if (screen->save_ptr == 0)
-	    SysError(ERROR_SAVE_PTR);
-    }
-    return len * sizeof(ScrnPtr);
-}
-
-/*
- * Inserts n blank lines at sb + where, treating last as a bottom margin.
- * size is the size of each entry in sb.
- */
-void
-ScrnInsertLine(TScreen * screen, ScrnBuf sb, int last, int where,
-	       unsigned n, unsigned size)
-{
-    size_t len = ScrnPointers(screen, n);
-
-    assert(where >= 0);
-    assert(last >= (int) n);
-    assert(last >= where);
-
-    assert(n != 0);
-    assert(size != 0);
-    assert(MAX_PTRS > 0);
-
-    /* save n lines at bottom */
-    ScrnClearLines(screen, sb, (last -= n - 1), n, size);
-
-    /*
-     * WARNING, overlapping copy operation.  Move down lines (pointers).
-     *
-     *   +----|---------|--------+
-     *
-     * is copied in the array to:
-     *
-     *   +--------|---------|----+
-     */
-    assert(last >= where);
-    memmove((char *) &sb[MAX_PTRS * (where + n)],
-	    (char *) &sb[MAX_PTRS * where],
-	    MAX_PTRS * sizeof(char *) * (last - where));
-
-    /* reuse storage for new lines at where */
-    memcpy((char *) &sb[MAX_PTRS * where],
-	   (char *) screen->save_ptr,
-	   len);
-}
-
-/*
- * Deletes n lines at sb + where, treating last as a bottom margin.
- * size is the size of each entry in sb.
- */
-void
-ScrnDeleteLine(TScreen * screen, ScrnBuf sb, int last, int where,
-	       unsigned n, unsigned size)
-{
-    assert(where >= 0);
-    assert(last >= where + (int) n - 1);
-
-    assert(n != 0);
-    assert(size != 0);
-    assert(MAX_PTRS > 0);
-
-    ScrnClearLines(screen, sb, where, n, size);
-
-    /* move up lines */
-    memmove((char *) &sb[MAX_PTRS * where],
-	    (char *) &sb[MAX_PTRS * (where + n)],
-	    MAX_PTRS * sizeof(char *) * ((last -= n - 1) - where));
-
-    /* reuse storage for new bottom lines */
-    memcpy((char *) &sb[MAX_PTRS * last],
-	   (char *) screen->save_ptr,
-	   MAX_PTRS * sizeof(char *) * n);
-}
-
-/*
- * Inserts n blanks in screen at current row, col.  Size is the size of each
- * row.
- */
-void
-ScrnInsertChar(TScreen * screen, unsigned n)
-{
-    ScrnBuf sb = screen->visbuf;
-    unsigned last = MaxCols(screen);
-    int row = screen->cur_row;
-    unsigned col = screen->cur_col;
-    unsigned i;
-    Char *ptr = BUF_CHARS(sb, row);
-    Char *attrs = BUF_ATTRS(sb, row);
-    int wrappedbit = ScrnTstWrapped(screen, row);
-    int flags = CHARDRAWN | TERM_COLOR_FLAGS(term);
-    size_t nbytes;
-
-    if (last <= (col + n)) {
-	if (last <= col)
-	    return;
-	n = last - col;
-    }
-    nbytes = (last - (col + n));
-
-    assert(screen->cur_col >= 0);
-    assert(screen->cur_row >= 0);
-    assert(n > 0);
-    assert(last > n);
-
-    ScrnClrWrapped(screen, row);	/* make sure the bit isn't moved */
-    for (i = last - 1; i >= col + n; i--) {
-	unsigned j = i - n;
-	assert(i >= n);
-	ptr[i] = ptr[j];
-	attrs[i] = attrs[j];
-    }
-
-    for (i = col; i < col + n; i++)
-	ptr[i] = ' ';
-    for (i = col; i < col + n; i++)
-	attrs[i] = flags;
-    if_OPT_EXT_COLORS(screen, {
-	ptr = BUF_FGRND(sb, row);
-	memmove(ptr + col + n, ptr + col, nbytes);
-	memset(ptr + col, term->sgr_foreground, n);
-	ptr = BUF_BGRND(sb, row);
-	memmove(ptr + col + n, ptr + col, nbytes);
-	memset(ptr + col, term->cur_background, n);
-    });
-    if_OPT_ISO_TRADITIONAL_COLORS(screen, {
-	ptr = BUF_COLOR(sb, row);
-	memmove(ptr + col + n, ptr + col, nbytes);
-	memset(ptr + col, xtermColorPair(), n);
-    });
-    if_OPT_DEC_CHRSET({
-	ptr = BUF_CSETS(sb, row);
-	memmove(ptr + col + n, ptr + col, nbytes);
-	memset(ptr + col, curXtermChrSet(row), n);
-    });
-    if_OPT_WIDE_CHARS(screen, {
-	ptr = BUF_WIDEC(sb, row);
-	memmove(ptr + col + n, ptr + col, nbytes);
-	memset(ptr + col, 0, n);
-
-	ptr = BUF_COM1L(sb, row);
-	memmove(ptr + col + n, ptr + col, nbytes);
-	memset(ptr + col, 0, n);
-
-	ptr = BUF_COM1H(sb, row);
-	memmove(ptr + col + n, ptr + col, nbytes);
-	memset(ptr + col, 0, n);
-
-	ptr = BUF_COM2L(sb, row);
-	memmove(ptr + col + n, ptr + col, nbytes);
-	memset(ptr + col, 0, n);
-
-	ptr = BUF_COM2H(sb, row);
-	memmove(ptr + col + n, ptr + col, nbytes);
-	memset(ptr + col, 0, n);
-    });
-
-    if (wrappedbit)
-	ScrnSetWrapped(screen, row);
-    else
-	ScrnClrWrapped(screen, row);
-}
-
-/*
- * Deletes n characters at current row, col.
- */
-void
-ScrnDeleteChar(TScreen * screen, unsigned n)
-{
-    ScrnBuf sb = screen->visbuf;
-    unsigned last = MaxCols(screen);
-    unsigned row = screen->cur_row;
-    unsigned col = screen->cur_col;
-    Char *ptr = BUF_CHARS(sb, row);
-    Char *attrs = BUF_ATTRS(sb, row);
-    size_t nbytes;
-
-    if (last <= (col + n)) {
-	if (last <= col)
-	    return;
-	n = last - col;
-    }
-    nbytes = (last - (col + n));
-
-    assert(screen->cur_col >= 0);
-    assert(screen->cur_row >= 0);
-    assert(n > 0);
-    assert(last > n);
-
-    memmove(ptr + col, ptr + col + n, nbytes);
-    memmove(attrs + col, attrs + col + n, nbytes);
-    bzero(ptr + last - n, n);
-    memset(attrs + last - n, (Char) (TERM_COLOR_FLAGS(term)), n);
-
-    if_OPT_EXT_COLORS(screen, {
-	ptr = BUF_FGRND(sb, row);
-	memmove(ptr + col, ptr + col + n, nbytes);
-	memset(ptr + last - n, term->sgr_foreground, n);
-	ptr = BUF_BGRND(sb, row);
-	memmove(ptr + col, ptr + col + n, nbytes);
-	memset(ptr + last - n, term->cur_background, n);
-    });
-    if_OPT_ISO_TRADITIONAL_COLORS(screen, {
-	ptr = BUF_COLOR(sb, row);
-	memmove(ptr + col, ptr + col + n, nbytes);
-	memset(ptr + last - n, xtermColorPair(), n);
-    });
-    if_OPT_DEC_CHRSET({
-	ptr = BUF_CSETS(sb, row);
-	memmove(ptr + col, ptr + col + n, nbytes);
-	memset(ptr + last - n, curXtermChrSet(row), n);
-    });
-    if_OPT_WIDE_CHARS(screen, {
-	ptr = BUF_WIDEC(sb, row);
-	memmove(ptr + col, ptr + col + n, nbytes);
-	memset(ptr + last - n, 0, n);
-
-	ptr = BUF_COM1L(sb, row);
-	memmove(ptr + col, ptr + col + n, nbytes);
-	memset(ptr + last - n, 0, n);
-
-	ptr = BUF_COM1H(sb, row);
-	memmove(ptr + col, ptr + col + n, nbytes);
-	memset(ptr + last - n, 0, n);
-
-	ptr = BUF_COM2L(sb, row);
-	memmove(ptr + col, ptr + col + n, nbytes);
-	memset(ptr + last - n, 0, n);
-
-	ptr = BUF_COM2H(sb, row);
-	memmove(ptr + col, ptr + col + n, nbytes);
-	memset(ptr + last - n, 0, n);
-    });
-    ScrnClrWrapped(screen, row);
-}
-
-/*
- * Repaints the area enclosed by the parameters.
- * Requires: (toprow, leftcol), (toprow + nrows, leftcol + ncols) are
- * 	     coordinates of characters in screen;
- *	     nrows and ncols positive.
- *	     all dimensions are based on single-characters.
- */
-void
-ScrnRefresh(TScreen * screen,
-	    int toprow,
-	    int leftcol,
-	    int nrows,
-	    int ncols,
-	    Bool force)		/* ... leading/trailing spaces */
-{
-    int y = toprow * FontHeight(screen) + screen->border;
-    int row;
-    int topline = screen->topline;
-    int maxrow = toprow + nrows - 1;
-    int scrollamt = screen->scroll_amt;
-    int max = screen->max_row;
-    int gc_changes = 0;
-#ifdef __CYGWIN__
-    static char first_time = 1;
-#endif
-    static int recurse = 0;
-
-    TRACE(("ScrnRefresh (%d,%d) - (%d,%d)%s\n",
-	   toprow, leftcol,
-	   nrows, ncols,
-	   force ? " force" : ""));
-
-    if (screen->cursor_col >= leftcol
-	&& screen->cursor_col <= (leftcol + ncols - 1)
-	&& screen->cursor_row >= toprow + topline
-	&& screen->cursor_row <= maxrow + topline)
-	screen->cursor_state = OFF;
-
-    for (row = toprow; row <= maxrow; y += FontHeight(screen), row++) {
-#if OPT_ISO_COLORS
-#if OPT_EXT_COLORS
-	Char *fbf = 0;
-	Char *fbb = 0;
-#define ColorOf(col) (unsigned) ((fbf[col] << 8) | fbb[col])
-#else
-	Char *fb = 0;
-#define ColorOf(col) (unsigned) (fb[col])
-#endif
-#endif
-#if OPT_DEC_CHRSET
-	Char *cb = 0;
-#endif
-#if OPT_WIDE_CHARS
-	int wideness = 0;
-	Char *widec = 0;
-#define WIDEC_PTR(cell) widec ? &widec[cell] : 0
-#define BLANK_CEL(cell) ((chars[cell] == ' ') && (widec == 0 || widec[cell] == 0))
-#else
-#define BLANK_CEL(cell) (chars[cell] == ' ')
-#endif
-	Char cs = 0;
-	Char *chars;
-	Char *attrs;
-	int col = leftcol;
-	int maxcol = leftcol + ncols - 1;
-	int hi_col = maxcol;
-	int lastind;
-	unsigned flags;
-	unsigned test;
-	unsigned fg_bg = 0, fg = 0, bg = 0;
-	int x;
-	GC gc;
-	Bool hilite;
-
-	if (row < screen->top_marg || row > screen->bot_marg)
-	    lastind = row;
-	else
-	    lastind = row - scrollamt;
-
-	TRACE(("ScrnRefresh row=%d lastind=%d/%d\n", row, lastind, max));
-	if (lastind < 0 || lastind > max)
-	    continue;
-
-	chars = SCRN_BUF_CHARS(screen, lastind + topline);
-	attrs = SCRN_BUF_ATTRS(screen, lastind + topline);
-
-	if_OPT_DEC_CHRSET({
-	    cb = SCRN_BUF_CSETS(screen, lastind + topline);
-	});
-
-	if_OPT_WIDE_CHARS(screen, {
-	    widec = SCRN_BUF_WIDEC(screen, lastind + topline);
-	});
-
-	if_OPT_WIDE_CHARS(screen, {
-	    /* This fixes an infinite recursion bug, that leads
-	       to display anomalies. It seems to be related to
-	       problems with the selection. */
-	    if (recurse < 3) {
-		/* adjust to redraw all of a widechar if we just wanted
-		   to draw the right hand half */
-		if (leftcol > 0 &&
-		    (chars[leftcol] | (widec[leftcol] << 8)) == HIDDEN_CHAR &&
-		    iswide(chars[leftcol - 1] | (widec[leftcol - 1] << 8))) {
-		    leftcol--;
-		    ncols++;
-		    col = leftcol;
-		}
-	    } else {
-		fprintf(stderr, "This should not happen. Why is it so?\n");
-	    }
-	});
-
-	if (row < screen->startHRow || row > screen->endHRow ||
-	    (row == screen->startHRow && maxcol < screen->startHCol) ||
-	    (row == screen->endHRow && col >= screen->endHCol)) {
-#if OPT_DEC_CHRSET
-	    /*
-	     * Temporarily change dimensions to double-sized characters so
-	     * we can reuse the recursion on this function.
-	     */
-	    if (CSET_DOUBLE(*cb)) {
-		col /= 2;
-		maxcol /= 2;
-	    }
-#endif
-	    /*
-	     * If row does not intersect selection; don't hilite blanks.
-	     */
-	    if (!force) {
-		while (col <= maxcol && (attrs[col] & ~BOLD) == 0 &&
-		       BLANK_CEL(col))
-		    col++;
-
-		while (col <= maxcol && (attrs[maxcol] & ~BOLD) == 0 &&
-		       BLANK_CEL(maxcol))
-		    maxcol--;
-	    }
-#if OPT_DEC_CHRSET
-	    if (CSET_DOUBLE(*cb)) {
-		col *= 2;
-		maxcol *= 2;
-	    }
-#endif
-	    hilite = False;
-	} else {
-	    /* row intersects selection; split into pieces of single type */
-	    if (row == screen->startHRow && col < screen->startHCol) {
-		recurse++;
-		ScrnRefresh(screen, row, col, 1, screen->startHCol - col,
-			    force);
-		col = screen->startHCol;
-	    }
-	    if (row == screen->endHRow && maxcol >= screen->endHCol) {
-		recurse++;
-		ScrnRefresh(screen, row, screen->endHCol, 1,
-			    maxcol - screen->endHCol + 1, force);
-		maxcol = screen->endHCol - 1;
-	    }
-
-	    /*
-	     * If we're highlighting because the user is doing cut/paste,
-	     * trim the trailing blanks from the highlighted region so we're
-	     * showing the actual extent of the text that'll be cut.  If
-	     * we're selecting a blank line, we'll highlight one column
-	     * anyway.
-	     *
-	     * We don't do this if the mouse-hilite mode is set because that
-	     * would be too confusing.
-	     *
-	     * The default if the highlightSelection resource isn't set will
-	     * highlight the whole width of the terminal, which is easy to
-	     * see, but harder to use (because trailing blanks aren't as
-	     * apparent).
-	     */
-	    if (screen->highlight_selection
-		&& screen->send_mouse_pos != VT200_HIGHLIGHT_MOUSE) {
-		hi_col = screen->max_col;
-		while (hi_col > 0 && !(attrs[hi_col] & CHARDRAWN))
-		    hi_col--;
-	    }
-
-	    /* remaining piece should be hilited */
-	    hilite = True;
-	}
-
-	if (col > maxcol)
-	    continue;
-
-	/*
-	 * Go back to double-sized character dimensions if the line has
-	 * double-width characters.  Note that 'hi_col' is already in the
-	 * right units.
-	 */
-	if_OPT_DEC_CHRSET({
-	    if (CSET_DOUBLE(*cb)) {
-		col /= 2;
-		maxcol /= 2;
-	    }
-	    cs = cb[col];
-	});
-
-	flags = attrs[col];
-#if OPT_WIDE_CHARS
-	if (widec)
-	    wideness = iswide(chars[col] | (widec[col] << 8));
-	else
-	    wideness = 0;
-#endif
-	if_OPT_EXT_COLORS(screen, {
-	    fbf = SCRN_BUF_FGRND(screen, lastind + topline);
-	    fbb = SCRN_BUF_BGRND(screen, lastind + topline);
-	    fg_bg = ColorOf(col);
-	    /* this combines them, then splits them again.  but
-	       extract_fg does more, so seems reasonable */
-	    fg = extract_fg(fg_bg, flags);
-	    bg = extract_bg(fg_bg, flags);
-	});
-	if_OPT_ISO_TRADITIONAL_COLORS(screen, {
-	    fb = SCRN_BUF_COLOR(screen, lastind + topline);
-	    fg_bg = ColorOf(col);
-	    fg = extract_fg(fg_bg, flags);
-	    bg = extract_bg(fg_bg, flags);
-	});
-
-	gc = updatedXtermGC(screen, flags, fg_bg, hilite);
-	gc_changes |= (flags & (FG_COLOR | BG_COLOR));
-
-	x = CurCursorX(screen, row + topline, col);
-	lastind = col;
-
-	for (; col <= maxcol; col++) {
-	    if ((attrs[col] != flags)
-		|| (hilite && (col > hi_col))
-#if OPT_ISO_COLORS
-		|| ((flags & FG_COLOR)
-		    && (extract_fg(ColorOf(col), attrs[col]) != fg))
-		|| ((flags & BG_COLOR)
-		    && (extract_bg(ColorOf(col), attrs[col]) != bg))
-#endif
-#if OPT_WIDE_CHARS
-		|| (widec
-		    && ((iswide(chars[col] | (widec[col] << 8))) != wideness)
-		    && !((chars[col] | (widec[col] << 8)) == HIDDEN_CHAR))
-#endif
-#if OPT_DEC_CHRSET
-		|| (cb[col] != cs)
-#endif
-		) {
-		assert(col >= lastind);
-		TRACE(("ScrnRefresh looping drawXtermText %d..%d:%s\n",
-		       lastind, col,
-		       visibleChars(PAIRED_CHARS(&chars[lastind],
-						 WIDEC_PTR(lastind)),
-				    (unsigned) (col - lastind))));
-
-		test = flags;
-		checkVeryBoldColors(test, fg);
-
-		x = drawXtermText(screen, test & DRAWX_MASK, gc, x, y,
-				  cs,
-				  PAIRED_CHARS(&chars[lastind], WIDEC_PTR(lastind)),
-				  (unsigned) (col - lastind), 0);
-
-		if_OPT_WIDE_CHARS(screen, {
-		    int i;
-		    Char *comb1l = BUF_COM1L(screen->visbuf, row + topline);
-		    Char *comb2l = BUF_COM2L(screen->visbuf, row + topline);
-		    Char *comb1h = BUF_COM1H(screen->visbuf, row + topline);
-		    Char *comb2h = BUF_COM2H(screen->visbuf, row + topline);
-		    for (i = lastind; i < col; i++) {
-			int my_x = CurCursorX(screen, row + topline, i);
-			int base = chars[i] | (widec[i] << 8);
-			int comb1 = comb1l[i] | (comb1h[i] << 8);
-			int comb2 = comb2l[i] | (comb2h[i] << 8);
-
-			if (iswide(base))
-			    my_x = CurCursorX(screen, row + topline, i - 1);
-
-			if (comb1 != 0) {
-			    drawXtermText(screen, (test & DRAWX_MASK)
-					  | NOBACKGROUND, gc, my_x, y, cs,
-					  PAIRED_CHARS(comb1l + i, comb1h + i),
-					  1, iswide(base));
-			}
-
-			if (comb2 != 0) {
-			    drawXtermText(screen, (test & DRAWX_MASK)
-					  | NOBACKGROUND, gc, my_x, y, cs,
-					  PAIRED_CHARS(comb2l + i, comb2h + i),
-					  1, iswide(base));
-			}
-		    }
-		});
-
-		resetXtermGC(screen, flags, hilite);
-
-		lastind = col;
-
-		if (hilite && (col > hi_col))
-		    hilite = False;
-
-		flags = attrs[col];
-		if_OPT_EXT_COLORS(screen, {
-		    fg_bg = ColorOf(col);
-		    fg = extract_fg(fg_bg, flags);
-		    bg = extract_bg(fg_bg, flags);
-		});
-		if_OPT_ISO_TRADITIONAL_COLORS(screen, {
-		    fg_bg = ColorOf(col);
-		    fg = extract_fg(fg_bg, flags);
-		    bg = extract_bg(fg_bg, flags);
-		});
-		if_OPT_DEC_CHRSET({
-		    cs = cb[col];
-		});
-#if OPT_WIDE_CHARS
-		if (widec)
-		    wideness = iswide(chars[col] | (widec[col] << 8));
-#endif
-
-		gc = updatedXtermGC(screen, flags, fg_bg, hilite);
-		gc_changes |= (flags & (FG_COLOR | BG_COLOR));
-	    }
-
-	    if (chars[col] == 0) {
-#if OPT_WIDE_CHARS
-		if (widec == 0 || widec[col] == 0)
-#endif
-		    chars[col] = ' ';
-	    }
-	}
-
-	assert(col >= lastind);
-	TRACE(("ScrnRefresh calling drawXtermText %d..%d:%s\n",
-	       lastind, col,
-	       visibleChars(PAIRED_CHARS(&chars[lastind], WIDEC_PTR(lastind)),
-			    (unsigned) (col - lastind))));
-
-	test = flags;
-	checkVeryBoldColors(test, fg);
-
-	drawXtermText(screen, test & DRAWX_MASK, gc, x, y,
-		      cs,
-		      PAIRED_CHARS(&chars[lastind], WIDEC_PTR(lastind)),
-		      (unsigned) (col - lastind), 0);
-
-	if_OPT_WIDE_CHARS(screen, {
-	    int i;
-	    Char *comb1l = BUF_COM1L(screen->visbuf, row + topline);
-	    Char *comb2l = BUF_COM2L(screen->visbuf, row + topline);
-	    Char *comb1h = BUF_COM1H(screen->visbuf, row + topline);
-	    Char *comb2h = BUF_COM2H(screen->visbuf, row + topline);
-	    for (i = lastind; i < col; i++) {
-		int my_x = CurCursorX(screen, row + topline, i);
-		int base = chars[i] | (widec[i] << 8);
-		int comb1 = comb1l[i] | (comb1h[i] << 8);
-		int comb2 = comb2l[i] | (comb2h[i] << 8);
-
-		if (iswide(base))
-		    my_x = CurCursorX(screen, row + topline, i - 1);
-
-		if (comb1 != 0) {
-		    drawXtermText(screen, (test & DRAWX_MASK) |
-				  NOBACKGROUND, gc, my_x, y, cs,
-				  PAIRED_CHARS(comb1l + i, comb1h + i),
-				  1, iswide(base));
-		}
-
-		if (comb2 != 0) {
-		    drawXtermText(screen, (test & DRAWX_MASK) |
-				  NOBACKGROUND, gc, my_x, y, cs,
-				  PAIRED_CHARS(comb2l + i, comb2h + i),
-				  1, iswide(base));
-		}
-	    }
-	});
-
-	resetXtermGC(screen, flags, hilite);
-    }
-
-    /*
-     * If we're in color mode, reset the various GC's to the current
-     * screen foreground and background so that other functions (e.g.,
-     * ClearRight) will get the correct colors.
-     */
-    if_OPT_ISO_COLORS(screen, {
-	if (gc_changes & FG_COLOR)
-	    SGR_Foreground(term->cur_foreground);
-	if (gc_changes & BG_COLOR)
-	    SGR_Background(term->cur_background);
-    });
-
-#if defined(__CYGWIN__) && defined(TIOCSWINSZ)
-    if (first_time == 1) {
-	TTYSIZE_STRUCT ts;
-
-	first_time = 0;
-	TTYSIZE_ROWS(ts) = nrows;
-	TTYSIZE_COLS(ts) = ncols;
-	ts.ws_xpixel = term->core.width;
-	ts.ws_ypixel = term->core.height;
-	SET_TTYSIZE(screen->respond, ts);
-    }
-#endif
-    recurse--;
-}
-
-/*
- * Call this wrapper to ScrnRefresh() when the data has changed.  If the
- * refresh region overlaps the selection, we will release the primary selection.
- */
-void
-ScrnUpdate(TScreen * screen,
-	   int toprow,
-	   int leftcol,
-	   int nrows,
-	   int ncols,
-	   Bool force)		/* ... leading/trailing spaces */
-{
-    if (ScrnHaveSelection(screen)
-	&& (toprow <= screen->endHRow)
-	&& (toprow + nrows - 1 >= screen->startHRow)) {
-	ScrnDisownSelection(screen);
-    }
-    ScrnRefresh(screen, toprow, leftcol, nrows, ncols, force);
-}
-
-/*
- * Sets the rows first though last of the buffer of screen to spaces.
- * Requires first <= last; first, last are rows of screen->buf.
- */
-void
-ClearBufRows(TScreen * screen,
-	     int first,
-	     int last)
-{
-    ScrnBuf buf = screen->visbuf;
-    unsigned len = MaxCols(screen);
-    int row;
-    int flags = TERM_COLOR_FLAGS(term);
-
-    TRACE(("ClearBufRows %d..%d\n", first, last));
-    for (row = first; row <= last; row++) {
-	ScrnClrWrapped(screen, row);
-	bzero(BUF_CHARS(buf, row), len);
-	memset(BUF_ATTRS(buf, row), flags, len);
-	if_OPT_EXT_COLORS(screen, {
-	    memset(BUF_FGRND(buf, row), term->sgr_foreground, len);
-	    memset(BUF_BGRND(buf, row), term->cur_background, len);
-	});
-	if_OPT_ISO_TRADITIONAL_COLORS(screen, {
-	    memset(BUF_COLOR(buf, row), xtermColorPair(), len);
-	});
-	if_OPT_DEC_CHRSET({
-	    memset(BUF_CSETS(buf, row), 0, len);
-	});
-	if_OPT_WIDE_CHARS(screen, {
-	    memset(BUF_WIDEC(buf, row), 0, len);
-	    memset(BUF_COM1L(buf, row), 0, len);
-	    memset(BUF_COM1H(buf, row), 0, len);
-	    memset(BUF_COM2L(buf, row), 0, len);
-	    memset(BUF_COM2H(buf, row), 0, len);
-	});
-    }
-}
-
-/*
-  Resizes screen:
-  1. If new window would have fractional characters, sets window size so as to
-  discard fractional characters and returns -1.
-  Minimum screen size is 1 X 1.
-  Note that this causes another ExposeWindow event.
-  2. Enlarges screen->buf if necessary.  New space is appended to the bottom
-  and to the right
-  3. Reduces  screen->buf if necessary.  Old space is removed from the bottom
-  and from the right
-  4. Cursor is positioned as closely to its former position as possible
-  5. Sets screen->max_row and screen->max_col to reflect new size
-  6. Maintains the inner border (and clears the border on the screen).
-  7. Clears origin mode and sets scrolling region to be entire screen.
-  8. Returns 0
-  */
-int
-ScreenResize(TScreen * screen,
-	     int width,
-	     int height,
-	     unsigned *flags)
-{
-    int code, rows, cols;
-    int border = 2 * screen->border;
-    int move_down_by;
-#ifdef TTYSIZE_STRUCT
-    TTYSIZE_STRUCT ts;
-#endif
-    Window tw = VWindow(screen);
-
-    TRACE(("ScreenResize %dx%d border %d font %dx%d\n",
-	   height, width, border,
-	   FontHeight(screen), FontWidth(screen)));
-
-    assert(width > 0);
-    assert(height > 0);
-
-    /* clear the right and bottom internal border because of NorthWest
-       gravity might have left junk on the right and bottom edges */
-    if (width >= FullWidth(screen)) {
-	XClearArea(screen->display, tw,
-		   FullWidth(screen), 0,	/* right edge */
-		   0, (unsigned) height,	/* from top to bottom */
-		   False);
-    }
-    if (height >= FullHeight(screen)) {
-	XClearArea(screen->display, tw,
-		   0, FullHeight(screen),	/* bottom */
-		   (unsigned) width, 0,		/* all across the bottom */
-		   False);
-    }
-
-    TRACE(("..computing rows/cols: %.2f %.2f\n",
-	   (double) (height - border) / FontHeight(screen),
-	   (double) (width - border - ScrollbarWidth(screen)) / FontWidth(screen)));
-
-    rows = (height - border) / FontHeight(screen);
-    cols = (width - border - ScrollbarWidth(screen)) / FontWidth(screen);
-    if (rows < 1)
-	rows = 1;
-    if (cols < 1)
-	cols = 1;
-
-    /* update buffers if the screen has changed size */
-    if (MaxRows(screen) != rows || MaxCols(screen) != cols) {
-	int savelines = (screen->scrollWidget
-			 ? screen->savelines
-			 : 0);
-	int delta_rows = rows - MaxRows(screen);
-
-	TRACE(("...ScreenResize chars %dx%d\n", rows, cols));
-
-	if (screen->cursor_state)
-	    HideCursor();
-	if (screen->alternate
-	    && term->misc.resizeGravity == SouthWestGravity)
-	    /* swap buffer pointers back to make all this hair work */
-	    SwitchBufPtrs(screen);
-	if (screen->altbuf)
-	    (void) Reallocate(&screen->altbuf,
-			      &screen->abuf_address,
-			      rows,
-			      cols,
-			      MaxRows(screen),
-			      MaxCols(screen));
-	move_down_by = Reallocate(&screen->allbuf,
-				  &screen->sbuf_address,
-				  rows + savelines, cols,
-				  MaxRows(screen) + savelines,
-				  MaxCols(screen));
-	screen->visbuf = &screen->allbuf[MAX_PTRS * savelines];
-
-	set_max_row(screen, screen->max_row + delta_rows);
-	set_max_col(screen, cols - 1);
-
-	if (term->misc.resizeGravity == SouthWestGravity) {
-	    screen->savedlines -= move_down_by;
-	    if (screen->savedlines < 0)
-		screen->savedlines = 0;
-	    if (screen->savedlines > screen->savelines)
-		screen->savedlines = screen->savelines;
-	    if (screen->topline < -screen->savedlines)
-		screen->topline = -screen->savedlines;
-	    set_cur_row(screen, screen->cur_row + move_down_by);
-	    screen->cursor_row += move_down_by;
-	    ScrollSelection(screen, move_down_by, True);
-
-	    if (screen->alternate)
-		SwitchBufPtrs(screen);	/* put the pointers back */
-	}
-
-	/* adjust scrolling region */
-	set_tb_margins(screen, 0, screen->max_row);
-	*flags &= ~ORIGIN;
-
-	if (screen->cur_row > screen->max_row)
-	    set_cur_row(screen, screen->max_row);
-	if (screen->cur_col > screen->max_col)
-	    set_cur_col(screen, screen->max_col);
-
-	screen->fullVwin.height = height - border;
-	screen->fullVwin.width = width - border - screen->fullVwin.sb_info.width;
-
-    } else if (FullHeight(screen) == height && FullWidth(screen) == width)
-	return (0);		/* nothing has changed at all */
-
-    screen->fullVwin.fullheight = height;
-    screen->fullVwin.fullwidth = width;
-
-    if (screen->scrollWidget)
-	ResizeScrollBar(term);
-
-    ResizeSelection(screen, rows, cols);
-
-#ifndef NO_ACTIVE_ICON
-    if (screen->iconVwin.window) {
-	XWindowChanges changes;
-	screen->iconVwin.width =
-	    MaxCols(screen) * screen->iconVwin.f_width;
-
-	screen->iconVwin.height =
-	    MaxRows(screen) * screen->iconVwin.f_height;
-
-	changes.width = screen->iconVwin.fullwidth =
-	    screen->iconVwin.width + 2 * term->misc.icon_border_width;
-	changes.height = screen->iconVwin.fullheight =
-	    screen->iconVwin.height + 2 * term->misc.icon_border_width;
-	changes.border_width = term->misc.icon_border_width;
-
-	TRACE(("resizing icon window %dx%d\n", changes.height, changes.width));
-	XConfigureWindow(XtDisplay(term), screen->iconVwin.window,
-			 CWWidth | CWHeight | CWBorderWidth, &changes);
-    }
-#endif /* NO_ACTIVE_ICON */
-
-#ifdef TTYSIZE_STRUCT
-    /* Set tty's idea of window size */
-    TTYSIZE_ROWS(ts) = rows;
-    TTYSIZE_COLS(ts) = cols;
-#ifdef USE_STRUCT_WINSIZE
-    ts.ws_xpixel = width;
-    ts.ws_ypixel = height;
-#endif
-    code = SET_TTYSIZE(screen->respond, ts);
-    TRACE(("return %d from SET_TTYSIZE %dx%d\n", code, rows, cols));
-    (void) code;
-
-#if defined(SIGWINCH) && defined(USE_STRUCT_TTYSIZE)
-    if (screen->pid > 1) {
-	int pgrp;
-
-	TRACE(("getting process-group\n"));
-	if (ioctl(screen->respond, TIOCGPGRP, &pgrp) != -1) {
-	    TRACE(("sending SIGWINCH to process group %d\n", pgrp));
-	    kill_process_group(pgrp, SIGWINCH);
-	}
-    }
-#endif /* SIGWINCH */
-
-#else
-    TRACE(("ScreenResize cannot do anything to pty\n"));
-#endif /* TTYSIZE_STRUCT */
-    return (0);
-}
-
-/*
- * Return true if any character cell starting at [row,col], for len-cells is
- * nonnull.
- */
-Bool
-non_blank_line(ScrnBuf sb,
-	       int row,
-	       int col,
-	       int len)
-{
-    int i;
-    Char *ptr = BUF_CHARS(sb, row);
-
-    for (i = col; i < len; i++) {
-	if (ptr[i])
-	    return True;
-    }
-
-    if_OPT_WIDE_CHARS((&(term->screen)), {
-	if ((ptr = BUF_WIDEC(sb, row)) != 0) {
-	    for (i = col; i < len; i++) {
-		if (ptr[i])
-		    return True;
-	    }
-	}
-    });
-
-    return False;
-}
-
-/*
- * Copy the rectangle boundaries into a struct, providing default values as
- * needed.
- */
-void
-xtermParseRect(TScreen * screen, int nparams, int *params, XTermRect * target)
-{
-    memset(target, 0, sizeof(*target));
-    target->top = (nparams > 0) ? params[0] : getMinRow(screen) + 1;
-    target->left = (nparams > 1) ? params[1] : getMinCol(screen) + 1;
-    target->bottom = (nparams > 2) ? params[2] : getMaxRow(screen) + 1;
-    target->right = (nparams > 3) ? params[3] : getMaxCol(screen) + 1;
-    TRACE(("parsed rectangle %d,%d %d,%d\n",
-	   target->top,
-	   target->left,
-	   target->bottom,
-	   target->right));
-}
-
-static Bool
-validRect(TScreen * screen, XTermRect * target)
-{
-    TRACE(("comparing against screensize %dx%d\n",
-	   getMaxRow(screen) + 1,
-	   getMaxCol(screen) + 1));
-    return (target != 0
-	    && target->top > getMinRow(screen)
-	    && target->left > getMinCol(screen)
-	    && target->top <= target->bottom
-	    && target->left <= target->right
-	    && target->top <= getMaxRow(screen) + 1
-	    && target->right <= getMaxCol(screen) + 1);
-}
-
-/*
- * Fills a rectangle with the given character and video-attributes.
- */
-void
-ScrnFillRectangle(TScreen * screen, XTermRect * target, int value, unsigned flags)
-{
-    TRACE(("filling rectangle with '%c'\n", value));
-    if (validRect(screen, target)) {
-	unsigned left = target->left - 1;
-	unsigned size = target->right - left;
-	Char attrs = flags;
-	int row;
-
-	attrs &= ATTRIBUTES;
-	attrs |= CHARDRAWN;
-	for (row = target->bottom - 1; row >= (target->top - 1); row--) {
-	    TRACE(("filling %d [%d..%d]\n", row, left + 1, left + size));
-	    memset(SCRN_BUF_ATTRS(screen, row) + left, attrs, size);
-	    memset(SCRN_BUF_CHARS(screen, row) + left, (Char) value, size);
-	    if_OPT_WIDE_CHARS(screen, {
-		bzero(SCRN_BUF_WIDEC(screen, row) + left, size);
-	    });
-	}
-	ScrnUpdate(screen,
-		   target->top - 1,
-		   target->left - 1,
-		   (target->bottom - target->top) + 1,
-		   (target->right - target->left) + 1,
-		   False);
-    }
-}
-
-#if OPT_DEC_RECTOPS
-/*
- * Copies the source rectangle to the target location, including video
- * attributes.
- *
- * This implementation ignores page numbers.
- *
- * The reference manual does not indicate if it handles overlapping copy
- * properly - so we make a local copy of the source rectangle first, then apply
- * the target from that.
- */
-void
-ScrnCopyRectangle(TScreen * screen, XTermRect * source, int nparam, int *params)
-{
-    TRACE(("copying rectangle\n"));
-
-    if (validRect(screen, source)) {
-	XTermRect target;
-	xtermParseRect(screen,
-		       ((nparam > 3) ? 2 : (nparam - 1)),
-		       params + 1,
-		       &target);
-	if (validRect(screen, &target)) {
-	    unsigned high = (source->bottom - source->top) + 1;
-	    unsigned wide = (source->right - source->left) + 1;
-	    unsigned size = (high * wide);
-	    int row, col, n;
-
-	    Char *attrs = TypeMallocN(Char, size);
-	    Char *chars = TypeMallocN(Char, size);
-
-#if OPT_WIDE_CHARS
-	    Char *widec = TypeMallocN(Char, size);
-	    if (widec == 0)
-		return;
-#endif
-	    if (attrs == 0
-		|| chars == 0)
-		return;
-
-	    TRACE(("OK - make copy %dx%d\n", high, wide));
-	    target.bottom = target.top + (high - 1);
-	    target.right = target.left + (wide - 1);
-
-	    for (row = source->top - 1; row < source->bottom; ++row) {
-		for (col = source->left - 1; col < source->right; ++col) {
-		    n = ((1 + row - source->top) * wide) + (1 + col - source->left);
-		    attrs[n] = SCRN_BUF_ATTRS(screen, row)[col] | CHARDRAWN;
-		    chars[n] = SCRN_BUF_CHARS(screen, row)[col];
-		    if_OPT_WIDE_CHARS(screen, {
-			widec[n] = SCRN_BUF_WIDEC(screen, row)[col];
-		    })
-		}
-	    }
-	    for (row = target.top - 1; row < target.bottom; ++row) {
-		for (col = target.left - 1; col < target.right; ++col) {
-		    if (row >= getMinRow(screen)
-			&& row <= getMaxRow(screen)
-			&& col >= getMinCol(screen)
-			&& col <= getMaxCol(screen)) {
-			n = ((1 + row - target.top) * wide) + (1 + col - target.left);
-			SCRN_BUF_ATTRS(screen, row)[col] = attrs[n];
-			SCRN_BUF_CHARS(screen, row)[col] = chars[n];
-			if_OPT_WIDE_CHARS(screen, {
-			    SCRN_BUF_WIDEC(screen, row)[col] = widec[n];
-			})
-		    }
-		}
-	    }
-	    free(attrs);
-	    free(chars);
-#if OPT_WIDE_CHARS
-	    free(widec);
-#endif
-
-	    ScrnUpdate(screen,
-		       (target.top - 1),
-		       (target.left - 1),
-		       (target.bottom - target.top) + 1,
-		       ((target.right - target.left) + 1),
-		       False);
-	}
-    }
-}
-
-/*
- * Modifies the video-attributes only - so selection is unaffected.
- */
-void
-ScrnMarkRectangle(TScreen * screen,
-		  XTermRect * target,
-		  Bool reverse,
-		  int nparam,
-		  int *params)
-{
-    Bool exact = (screen->cur_decsace == 2);
-
-    TRACE(("%s %s\n",
-	   reverse ? "reversing" : "marking",
-	   (exact
-	    ? "rectangle"
-	    : "region")));
-
-    if (validRect(screen, target)) {
-	int top = target->top - 1;
-	int bottom = target->bottom - 1;
-	int row, col;
-	int n;
-
-	for (row = top; row <= bottom; ++row) {
-	    int left = ((exact || (row == top))
-			? (target->left - 1)
-			: getMinCol(screen));
-	    int right = ((exact || (row == bottom))
-			 ? (target->right - 1)
-			 : getMaxCol(screen));
-
-	    TRACE(("marking %d [%d..%d]\n", row, left + 1, right + 1));
-	    for (col = left; col <= right; ++col) {
-		unsigned flags = SCRN_BUF_ATTRS(screen, row)[col];
-
-		for (n = 0; n < nparam; ++n) {
-#if OPT_TRACE
-		    if (row == top && col == left)
-			TRACE(("attr param[%d] %d\n", n + 1, params[n]));
-#endif
-		    if (reverse) {
-			switch (params[n]) {
-			case 1:
-			    flags ^= BOLD;
-			    break;
-			case 4:
-			    flags ^= UNDERLINE;
-			    break;
-			case 5:
-			    flags ^= BLINK;
-			    break;
-			case 7:
-			    flags ^= INVERSE;
-			    break;
-			}
-		    } else {
-			switch (params[n]) {
-			case 0:
-			    flags &= ~SGR_MASK;
-			    break;
-			case 1:
-			    flags |= BOLD;
-			    break;
-			case 4:
-			    flags |= UNDERLINE;
-			    break;
-			case 5:
-			    flags |= BLINK;
-			    break;
-			case 7:
-			    flags |= INVERSE;
-			    break;
-			case 22:
-			    flags &= ~BOLD;
-			    break;
-			case 24:
-			    flags &= ~UNDERLINE;
-			    break;
-			case 25:
-			    flags &= ~BLINK;
-			    break;
-			case 27:
-			    flags &= ~INVERSE;
-			    break;
-			}
-		    }
-		}
-#if OPT_TRACE
-		if (row == top && col == left)
-		    TRACE(("first mask-change is %#x\n",
-			   SCRN_BUF_ATTRS(screen, row)[col] ^ flags));
-#endif
-		SCRN_BUF_ATTRS(screen, row)[col] = flags;
-	    }
-	}
-	ScrnRefresh(screen,
-		    (target->top - 1),
-		    (exact ? (target->left - 1) : getMinCol(screen)),
-		    (target->bottom - target->top) + 1,
-		    (exact
-		     ? ((target->right - target->left) + 1)
-		     : (getMaxCol(screen) - getMinCol(screen) + 1)),
-		    False);
-    }
-}
-
-/*
- * Resets characters to space, except where prohibited by DECSCA.  Video
- * attributes are untouched.
- */
-void
-ScrnWipeRectangle(TScreen * screen,
-		  XTermRect * target)
-{
-    TRACE(("wiping rectangle\n"));
-
-    if (validRect(screen, target)) {
-	int top = target->top - 1;
-	int bottom = target->bottom - 1;
-	int row, col;
-
-	for (row = top; row <= bottom; ++row) {
-	    int left = (target->left - 1);
-	    int right = (target->right - 1);
-
-	    TRACE(("wiping %d [%d..%d]\n", row, left + 1, right + 1));
-	    for (col = left; col <= right; ++col) {
-		if (!((screen->protected_mode == DEC_PROTECT)
-		      && (SCRN_BUF_ATTRS(screen, row)[col] & PROTECTED))) {
-		    SCRN_BUF_ATTRS(screen, row)[col] |= CHARDRAWN;
-		    SCRN_BUF_CHARS(screen, row)[col] = ' ';
-		    if_OPT_WIDE_CHARS(screen, {
-			SCRN_BUF_WIDEC(screen, row)[col] = '\0';
-		    })
-		}
-	    }
-	}
-	ScrnUpdate(screen,
-		   (target->top - 1),
-		   (target->left - 1),
-		   (target->bottom - target->top) + 1,
-		   ((target->right - target->left) + 1),
-		   False);
-    }
-}
-#endif /* OPT_DEC_RECTOPS */