diff --git a/ncurses/tty/MKexpanded.sh b/ncurses/tty/MKexpanded.sh
index bf9acf2..7a5f599 100755
--- a/ncurses/tty/MKexpanded.sh
+++ b/ncurses/tty/MKexpanded.sh
@@ -1,6 +1,6 @@
 #! /bin/sh
 ##############################################################################
-# Copyright (c) 1998-2000,2005 Free Software Foundation, Inc.                #
+# Copyright (c) 1998-2009,2010 Free Software Foundation, Inc.                #
 #                                                                            #
 # Permission is hereby granted, free of charge, to any person obtaining a    #
 # copy of this software and associated documentation files (the "Software"), #
@@ -27,9 +27,9 @@
 # authorization.                                                             #
 ##############################################################################
 #
-# Author: Thomas E. Dickey <dickey@clark.net> 1997
+# Author: Thomas E. Dickey, 1997-on
 #
-# $Id: MKexpanded.sh,v 1.11 2005/01/02 01:06:40 tom Exp $
+# $Id: MKexpanded.sh,v 1.17 2010/01/23 17:57:43 tom Exp $
 #
 # Script to generate 'expanded.c', a dummy source that contains functions
 # corresponding to complex macros used in this library.  By making functions,
@@ -52,8 +52,13 @@
 
 cat <<EOF
 /* generated by MKexpanded.sh */
+#define NEED_NCURSES_CH_T 1
 #include <curses.priv.h>
-#include <term.h>
+
+#ifndef CUR
+#define CUR SP_TERMTYPE
+#endif
+
 #if NCURSES_EXPANDED
 EOF
 
@@ -68,29 +73,59 @@
 #undef FALSE
 /* this is a marker */
 IGNORE
-NCURSES_EXPORT(void) _nc_toggle_attr_on (attr_t *S, attr_t at)
+NCURSES_EXPORT(void)
+_nc_toggle_attr_on (attr_t *S, attr_t at)
 {
 	toggle_attr_on(*S,at);
 }
-NCURSES_EXPORT(void) _nc_toggle_attr_off (attr_t *S, attr_t at) 
+
+NCURSES_EXPORT(void)
+_nc_toggle_attr_off (attr_t *S, attr_t at) 
 {
 	toggle_attr_off(*S,at);
 }
-NCURSES_EXPORT(int) _nc_DelCharCost (int count)
+
+NCURSES_EXPORT(int)
+NCURSES_SP_NAME(_nc_DelCharCost) (NCURSES_SP_DCLx int count)
 {
-	return DelCharCost(count);
+	return DelCharCost(SP_PARM, count);
 }
-NCURSES_EXPORT(int) _nc_InsCharCost (int count)
+
+NCURSES_EXPORT(int)
+NCURSES_SP_NAME(_nc_InsCharCost) (NCURSES_SP_DCLx int count)
 {
-	return InsCharCost(count);
+	return InsCharCost(SP_PARM, count);
 }
-NCURSES_EXPORT(void) _nc_UpdateAttrs (NCURSES_CH_T c)
+
+NCURSES_EXPORT(void)
+NCURSES_SP_NAME(_nc_UpdateAttrs) (NCURSES_SP_DCLx CARG_CH_T c)
 {
-	UpdateAttrs(c);
+	UpdateAttrs(SP_PARM, CHDEREF(c));
 }
+
+@if_NCURSES_SP_FUNCS
+NCURSES_EXPORT(int)
+_nc_DelCharCost (int count)
+{
+	return NCURSES_SP_NAME(_nc_DelCharCost) (CURRENT_SCREEN, count);
+}
+
+NCURSES_EXPORT(int)
+_nc_InsCharCost (int count)
+{
+	return NCURSES_SP_NAME(_nc_InsCharCost)(CURRENT_SCREEN, count);
+}
+
+NCURSES_EXPORT(void)
+_nc_UpdateAttrs (CARG_CH_T c)
+{
+	NCURSES_SP_NAME(_nc_UpdateAttrs)(CURRENT_SCREEN,c);
+}
+@endif
 EOF
 
-$preprocessor $TMP 2>/dev/null | sed -e '1,/^IGNORE$/d'
+$preprocessor $TMP 2>/dev/null | \
+	sed -e '1,/^IGNORE$/d' -e 's/^@/#/' -e 's/^#if_/#if /'
 
 cat <<EOF
 #else /* ! NCURSES_EXPANDED */
diff --git a/ncurses/tty/hardscroll.c b/ncurses/tty/hardscroll.c
index 2c40997..d6f28d6 100644
--- a/ncurses/tty/hardscroll.c
+++ b/ncurses/tty/hardscroll.c
@@ -1,5 +1,5 @@
 /****************************************************************************
- * Copyright (c) 1998-2007,2008 Free Software Foundation, Inc.              *
+ * Copyright (c) 1998-2012,2015 Free Software Foundation, Inc.              *
  *                                                                          *
  * Permission is hereby granted, free of charge, to any person obtaining a  *
  * copy of this software and associated documentation files (the            *
@@ -147,90 +147,104 @@
 
 #include <curses.priv.h>
 
-MODULE_ID("$Id: hardscroll.c,v 1.42 2008/08/03 23:49:30 tom Exp $")
+MODULE_ID("$Id: hardscroll.c,v 1.52 2015/07/25 20:13:07 tom Exp $")
 
 #if defined(SCROLLDEBUG) || defined(HASHDEBUG)
 
 # undef screen_lines
-# define screen_lines MAXLINES
-NCURSES_EXPORT_VAR(int)
-oldnums[MAXLINES];
-# define OLDNUM(n)	oldnums[n]
+# define screen_lines(sp) MAXLINES
+NCURSES_EXPORT_VAR (int)
+  oldnums[MAXLINES];
+# define OLDNUM(sp,n)	oldnums[n]
 # define _tracef	printf
 # undef TR
 # define TR(n, a)	if (_nc_tracing & (n)) { _tracef a ; putchar('\n'); }
 
-extern NCURSES_EXPORT_VAR(unsigned) _nc_tracing;
+extern				NCURSES_EXPORT_VAR(unsigned) _nc_tracing;
 
 #else /* no debug */
 
 /* OLDNUM(n) indicates which line will be shifted to the position n.
    if OLDNUM(n) == _NEWINDEX, then the line n in new, not shifted from
    somewhere. */
-NCURSES_EXPORT_VAR(int *)
-_nc_oldnums = 0;		/* obsolete: keep for ABI compat */
+NCURSES_EXPORT_VAR (int *)
+  _nc_oldnums = 0;		/* obsolete: keep for ABI compat */
 
 # if USE_HASHMAP
-#  define oldnums       SP->_oldnum_list
-#  define OLDNUM(n)	oldnums[n]
-# else				/* !USE_HASHMAP */
-#  define OLDNUM(n)	newscr->_line[n].oldindex
-# endif				/* !USE_HASHMAP */
+#  define oldnums(sp)   (sp)->_oldnum_list
+#  define OLDNUM(sp,n)	oldnums(sp)[n]
+# else /* !USE_HASHMAP */
+#  define OLDNUM(sp,n)	NewScreen(sp)->_line[n].oldindex
+# endif	/* !USE_HASHMAP */
 
-#define OLDNUM_SIZE     SP->_oldnum_size
+#define OLDNUM_SIZE(sp) (sp)->_oldnum_size
 
 #endif /* defined(SCROLLDEBUG) || defined(HASHDEBUG) */
 
 NCURSES_EXPORT(void)
-_nc_scroll_optimize(void)
+NCURSES_SP_NAME(_nc_scroll_optimize) (NCURSES_SP_DCL0)
 /* scroll optimization to transform curscr to newscr */
 {
     int i;
     int start, end, shift;
 
-    TR(TRACE_ICALLS, (T_CALLED("_nc_scroll_optimize")));
+    TR(TRACE_ICALLS, (T_CALLED("_nc_scroll_optimize(%p)"), (void *) SP_PARM));
 
 #if !defined(SCROLLDEBUG) && !defined(HASHDEBUG)
 #if USE_HASHMAP
     /* get enough storage */
-    if (OLDNUM_SIZE < screen_lines) {
-	int *new_oldnums = typeRealloc(int, screen_lines, oldnums);
+    assert(OLDNUM_SIZE(SP_PARM) >= 0);
+    assert(screen_lines(SP_PARM) > 0);
+    if ((oldnums(SP_PARM) == 0)
+	|| (OLDNUM_SIZE(SP_PARM) < screen_lines(SP_PARM))) {
+	int need_lines = ((OLDNUM_SIZE(SP_PARM) < screen_lines(SP_PARM))
+			  ? screen_lines(SP_PARM)
+			  : OLDNUM_SIZE(SP_PARM));
+	int *new_oldnums = typeRealloc(int,
+				       (size_t) need_lines,
+				       oldnums(SP_PARM));
 	if (!new_oldnums)
 	    return;
-	oldnums = new_oldnums;
-	OLDNUM_SIZE = screen_lines;
+	oldnums(SP_PARM) = new_oldnums;
+	OLDNUM_SIZE(SP_PARM) = need_lines;
     }
     /* calculate the indices */
-    _nc_hash_map();
+    NCURSES_SP_NAME(_nc_hash_map) (NCURSES_SP_ARG);
 #endif
 #endif /* !defined(SCROLLDEBUG) && !defined(HASHDEBUG) */
 
 #ifdef TRACE
     if (USE_TRACEF(TRACE_UPDATE | TRACE_MOVE)) {
-	_nc_linedump();
+	NCURSES_SP_NAME(_nc_linedump) (NCURSES_SP_ARG);
 	_nc_unlock_global(tracef);
     }
 #endif /* TRACE */
 
     /* pass 1 - from top to bottom scrolling up */
-    for (i = 0; i < screen_lines;) {
-	while (i < screen_lines && (OLDNUM(i) == _NEWINDEX || OLDNUM(i) <= i))
+    for (i = 0; i < screen_lines(SP_PARM);) {
+	while (i < screen_lines(SP_PARM)
+	       && (OLDNUM(SP_PARM, i) == _NEWINDEX || OLDNUM(SP_PARM, i) <= i))
 	    i++;
-	if (i >= screen_lines)
+	if (i >= screen_lines(SP_PARM))
 	    break;
 
-	shift = OLDNUM(i) - i;	/* shift > 0 */
+	shift = OLDNUM(SP_PARM, i) - i;		/* shift > 0 */
 	start = i;
 
 	i++;
-	while (i < screen_lines && OLDNUM(i) != _NEWINDEX && OLDNUM(i) - i
-	       == shift)
+	while (i < screen_lines(SP_PARM)
+	       && OLDNUM(SP_PARM, i) != _NEWINDEX
+	       && OLDNUM(SP_PARM, i) - i == shift)
 	    i++;
 	end = i - 1 + shift;
 
 	TR(TRACE_UPDATE | TRACE_MOVE, ("scroll [%d, %d] by %d", start, end, shift));
 #if !defined(SCROLLDEBUG) && !defined(HASHDEBUG)
-	if (_nc_scrolln(shift, start, end, screen_lines - 1) == ERR) {
+	if (NCURSES_SP_NAME(_nc_scrolln) (NCURSES_SP_ARGx
+					  shift,
+					  start,
+					  end,
+					  screen_lines(SP_PARM) - 1) == ERR) {
 	    TR(TRACE_UPDATE | TRACE_MOVE, ("unable to scroll"));
 	    continue;
 	}
@@ -238,23 +252,33 @@
     }
 
     /* pass 2 - from bottom to top scrolling down */
-    for (i = screen_lines - 1; i >= 0;) {
-	while (i >= 0 && (OLDNUM(i) == _NEWINDEX || OLDNUM(i) >= i))
+    for (i = screen_lines(SP_PARM) - 1; i >= 0;) {
+	while (i >= 0
+	       && (OLDNUM(SP_PARM, i) == _NEWINDEX
+		   || OLDNUM(SP_PARM, i) >= i)) {
 	    i--;
+	}
 	if (i < 0)
 	    break;
 
-	shift = OLDNUM(i) - i;	/* shift < 0 */
+	shift = OLDNUM(SP_PARM, i) - i;		/* shift < 0 */
 	end = i;
 
 	i--;
-	while (i >= 0 && OLDNUM(i) != _NEWINDEX && OLDNUM(i) - i == shift)
+	while (i >= 0
+	       && OLDNUM(SP_PARM, i) != _NEWINDEX
+	       && OLDNUM(SP_PARM, i) - i == shift) {
 	    i--;
+	}
 	start = i + 1 - (-shift);
 
 	TR(TRACE_UPDATE | TRACE_MOVE, ("scroll [%d, %d] by %d", start, end, shift));
 #if !defined(SCROLLDEBUG) && !defined(HASHDEBUG)
-	if (_nc_scrolln(shift, start, end, screen_lines - 1) == ERR) {
+	if (NCURSES_SP_NAME(_nc_scrolln) (NCURSES_SP_ARGx
+					  shift,
+					  start,
+					  end,
+					  screen_lines(SP_PARM) - 1) == ERR) {
 	    TR(TRACE_UPDATE | TRACE_MOVE, ("unable to scroll"));
 	    continue;
 	}
@@ -263,24 +287,44 @@
     TR(TRACE_ICALLS, (T_RETURN("")));
 }
 
+#if NCURSES_SP_FUNCS
+NCURSES_EXPORT(void)
+_nc_scroll_optimize(void)
+{
+    NCURSES_SP_NAME(_nc_scroll_optimize) (CURRENT_SCREEN);
+}
+#endif
+
 #if defined(TRACE) || defined(SCROLLDEBUG) || defined(HASHDEBUG)
 NCURSES_EXPORT(void)
-_nc_linedump(void)
+NCURSES_SP_NAME(_nc_linedump) (NCURSES_SP_DCL0)
 /* dump the state of the real and virtual oldnum fields */
 {
     int n;
     char *buf = 0;
-    size_t want = (screen_lines + 1) * 4;
+    size_t want = ((size_t) screen_lines(SP_PARM) + 1) * 4;
+    (void) SP_PARM;
 
     if ((buf = typeMalloc(char, want)) != 0) {
 
-	(void) strcpy(buf, "virt");
-	for (n = 0; n < screen_lines; n++)
-	    (void) sprintf(buf + strlen(buf), " %02d", OLDNUM(n));
-	TR(TRACE_UPDATE | TRACE_MOVE, (buf));
+	*buf = '\0';
+	for (n = 0; n < screen_lines(SP_PARM); n++)
+	    _nc_SPRINTF(buf + strlen(buf),
+			_nc_SLIMIT(want - strlen(buf))
+			" %02d", OLDNUM(SP_PARM, n));
+	TR(TRACE_UPDATE | TRACE_MOVE, ("virt %s", buf));
 	free(buf);
     }
 }
+
+#if NCURSES_SP_FUNCS
+NCURSES_EXPORT(void)
+_nc_linedump(void)
+{
+    NCURSES_SP_NAME(_nc_linedump) (CURRENT_SCREEN);
+}
+#endif
+
 #endif /* defined(TRACE) || defined(SCROLLDEBUG) */
 
 #ifdef SCROLLDEBUG
@@ -296,7 +340,7 @@
     for (;;) {
 	int n;
 
-	for (n = 0; n < screen_lines; n++)
+	for (n = 0; n < screen_lines(sp); n++)
 	    oldnums[n] = _NEWINDEX;
 
 	/* grab the test vector */
diff --git a/ncurses/tty/hashmap.c b/ncurses/tty/hashmap.c
index 9b60df6..8c0fdfd 100644
--- a/ncurses/tty/hashmap.c
+++ b/ncurses/tty/hashmap.c
@@ -1,5 +1,5 @@
 /****************************************************************************
- * Copyright (c) 1998-2006,2007 Free Software Foundation, Inc.                   *
+ * Copyright (c) 1998-2014,2015 Free Software Foundation, Inc.              *
  *                                                                          *
  * Permission is hereby granted, free of charge, to any person obtaining a  *
  * copy of this software and associated documentation files (the            *
@@ -68,40 +68,47 @@
 *****************************************************************************/
 
 #include <curses.priv.h>
-#include <term.h>		/* for back_color_erase */
 
-MODULE_ID("$Id: hashmap.c,v 1.56 2007/10/13 18:47:25 Miroslav.Lichvar Exp $")
+#ifndef CUR
+#define CUR SP_TERMTYPE
+#endif
+
+MODULE_ID("$Id: hashmap.c,v 1.65 2015/07/25 20:13:56 tom Exp $")
 
 #ifdef HASHDEBUG
 
 # define _tracef	printf
 # undef TR
+# ifdef TRACE
 # define TR(n, a)	if (_nc_tracing & (n)) { _tracef a ; putchar('\n'); }
+# else
+# define TR(n, a)	{ _tracef a ; putchar('\n'); }
+# endif
 # undef screen_lines
-# define screen_lines MAXLINES
-# define TEXTWIDTH	1
+# define screen_lines(sp) MAXLINES
+# define TEXTWIDTH(sp)	1
 int oldnums[MAXLINES], reallines[MAXLINES];
-static NCURSES_CH_T oldtext[MAXLINES][TEXTWIDTH];
-static NCURSES_CH_T newtext[MAXLINES][TEXTWIDTH];
-# define OLDNUM(n)	oldnums[n]
-# define OLDTEXT(n)	oldtext[n]
-# define NEWTEXT(m)	newtext[m]
-# define PENDING(n)     1
+static NCURSES_CH_T oldtext[MAXLINES][TEXTWIDTH(sp)];
+static NCURSES_CH_T newtext[MAXLINES][TEXTWIDTH(sp)];
+# define OLDNUM(sp,n)	oldnums[n]
+# define OLDTEXT(sp,n)	oldtext[n]
+# define NEWTEXT(sp,m)	newtext[m]
+# define PENDING(sp,n)  1
 
 #else /* !HASHDEBUG */
 
-# define OLDNUM(n)	SP->_oldnum_list[n]
-# define OLDTEXT(n)	curscr->_line[n].text
-# define NEWTEXT(m)	newscr->_line[m].text
-# define TEXTWIDTH	(curscr->_maxx+1)
-# define PENDING(n)     (newscr->_line[n].firstchar != _NOCHANGE)
+# define OLDNUM(sp,n)	(sp)->_oldnum_list[n]
+# define OLDTEXT(sp,n)	CurScreen(sp)->_line[n].text
+# define NEWTEXT(sp,m)	NewScreen(sp)->_line[m].text
+# define TEXTWIDTH(sp)	(CurScreen(sp)->_maxx + 1)
+# define PENDING(sp,n)  (NewScreen(sp)->_line[n].firstchar != _NOCHANGE)
 
 #endif /* !HASHDEBUG */
 
-#define oldhash		(SP->oldhash)
-#define newhash		(SP->newhash)
-#define hashtab		(SP->hashtab)
-#define lines_alloc	(SP->hashtab_len)
+#define oldhash(sp)	((sp)->oldhash)
+#define newhash(sp)	((sp)->newhash)
+#define hashtab(sp)	((sp)->hashtab)
+#define lines_alloc(sp)	((sp)->hashtab_len)
 
 #if USE_WIDEC_SUPPORT
 #define HASH_VAL(ch) (ch.chars[0])
@@ -112,26 +119,29 @@
 static const NCURSES_CH_T blankchar = NewChar(BLANK_TEXT);
 
 static NCURSES_INLINE unsigned long
-hash(NCURSES_CH_T * text)
+hash(SCREEN *sp, NCURSES_CH_T * text)
 {
     int i;
     NCURSES_CH_T ch;
     unsigned long result = 0;
-    for (i = TEXTWIDTH; i > 0; i--) {
+    (void) sp;
+
+    for (i = TEXTWIDTH(sp); i > 0; i--) {
 	ch = *text++;
-	result += (result << 5) + HASH_VAL(ch);
+	result += (result << 5) + (unsigned long) HASH_VAL(ch);
     }
     return result;
 }
 
 /* approximate update cost */
 static int
-update_cost(NCURSES_CH_T * from, NCURSES_CH_T * to)
+update_cost(SCREEN *sp, NCURSES_CH_T * from, NCURSES_CH_T * to)
 {
     int cost = 0;
     int i;
+    (void) sp;
 
-    for (i = TEXTWIDTH; i > 0; i--, from++, to++)
+    for (i = TEXTWIDTH(sp); i > 0; i--, from++, to++)
 	if (!(CharEq(*from, *to)))
 	    cost++;
 
@@ -139,16 +149,17 @@
 }
 
 static int
-update_cost_from_blank(NCURSES_CH_T * to)
+update_cost_from_blank(SCREEN *sp, NCURSES_CH_T * to)
 {
     int cost = 0;
     int i;
     NCURSES_CH_T blank = blankchar;
+    (void) sp;
 
     if (back_color_erase)
 	SetPair(blank, GetPair(stdscr->_nc_bkgd));
 
-    for (i = TEXTWIDTH; i > 0; i--, to++)
+    for (i = TEXTWIDTH(sp); i > 0; i--, to++)
 	if (!(CharEq(blank, *to)))
 	    cost++;
 
@@ -160,14 +171,14 @@
  * effective. 'blank' indicates whether the line 'to' would become blank.
  */
 static NCURSES_INLINE bool
-cost_effective(const int from, const int to, const bool blank)
+cost_effective(SCREEN *sp, const int from, const int to, const int blank)
 {
     int new_from;
 
     if (from == to)
 	return FALSE;
 
-    new_from = OLDNUM(from);
+    new_from = OLDNUM(sp, from);
     if (new_from == _NEWINDEX)
 	new_from = from;
 
@@ -175,16 +186,17 @@
      * On the left side of >= is the cost before moving;
      * on the right side -- cost after moving.
      */
-    return (((blank ? update_cost_from_blank(NEWTEXT(to))
-	      : update_cost(OLDTEXT(to), NEWTEXT(to)))
-	     + update_cost(OLDTEXT(new_from), NEWTEXT(from)))
-	    >= ((new_from == from ? update_cost_from_blank(NEWTEXT(from))
-		 : update_cost(OLDTEXT(new_from), NEWTEXT(from)))
-		+ update_cost(OLDTEXT(from), NEWTEXT(to)))) ? TRUE : FALSE;
+    return (((blank ? update_cost_from_blank(sp, NEWTEXT(sp, to))
+	      : update_cost(sp, OLDTEXT(sp, to), NEWTEXT(sp, to)))
+	     + update_cost(sp, OLDTEXT(sp, new_from), NEWTEXT(sp, from)))
+	    >= ((new_from == from ? update_cost_from_blank(sp, NEWTEXT(sp, from))
+		 : update_cost(sp, OLDTEXT(sp, new_from), NEWTEXT(sp, from)))
+		+ update_cost(sp, OLDTEXT(sp, from), NEWTEXT(sp, to))))
+	? TRUE : FALSE;
 }
 
 static void
-grow_hunks(void)
+grow_hunks(SCREEN *sp)
 {
     int start, end, shift;
     int back_limit, forward_limit;	/* limits for cells to fill */
@@ -200,35 +212,36 @@
     back_ref_limit = 0;
 
     i = 0;
-    while (i < screen_lines && OLDNUM(i) == _NEWINDEX)
+    while (i < screen_lines(sp) && OLDNUM(sp, i) == _NEWINDEX)
 	i++;
-    for (; i < screen_lines; i = next_hunk) {
+    for (; i < screen_lines(sp); i = next_hunk) {
 	start = i;
-	shift = OLDNUM(i) - i;
+	shift = OLDNUM(sp, i) - i;
 
 	/* get forward limit */
 	i = start + 1;
-	while (i < screen_lines && OLDNUM(i) != _NEWINDEX && OLDNUM(i) - i
-	       == shift)
+	while (i < screen_lines(sp)
+	       && OLDNUM(sp, i) != _NEWINDEX
+	       && OLDNUM(sp, i) - i == shift)
 	    i++;
 	end = i;
-	while (i < screen_lines && OLDNUM(i) == _NEWINDEX)
+	while (i < screen_lines(sp) && OLDNUM(sp, i) == _NEWINDEX)
 	    i++;
 	next_hunk = i;
 	forward_limit = i;
-	if (i >= screen_lines || OLDNUM(i) >= i)
+	if (i >= screen_lines(sp) || OLDNUM(sp, i) >= i)
 	    forward_ref_limit = i;
 	else
-	    forward_ref_limit = OLDNUM(i);
+	    forward_ref_limit = OLDNUM(sp, i);
 
 	i = start - 1;
 	/* grow back */
 	if (shift < 0)
 	    back_limit = back_ref_limit + (-shift);
 	while (i >= back_limit) {
-	    if (newhash[i] == oldhash[i + shift]
-		|| cost_effective(i + shift, i, shift < 0)) {
-		OLDNUM(i) = i + shift;
+	    if (newhash(sp)[i] == oldhash(sp)[i + shift]
+		|| cost_effective(sp, i + shift, i, shift < 0)) {
+		OLDNUM(sp, i) = i + shift;
 		TR(TRACE_UPDATE | TRACE_MOVE,
 		   ("connected new line %d to old line %d (backward continuation)",
 		    i, i + shift));
@@ -246,9 +259,9 @@
 	if (shift > 0)
 	    forward_limit = forward_ref_limit - shift;
 	while (i < forward_limit) {
-	    if (newhash[i] == oldhash[i + shift]
-		|| cost_effective(i + shift, i, shift > 0)) {
-		OLDNUM(i) = i + shift;
+	    if (newhash(sp)[i] == oldhash(sp)[i + shift]
+		|| cost_effective(sp, i + shift, i, shift > 0)) {
+		OLDNUM(sp, i) = i + shift;
 		TR(TRACE_UPDATE | TRACE_MOVE,
 		   ("connected new line %d to old line %d (forward continuation)",
 		    i, i + shift));
@@ -268,51 +281,54 @@
 }
 
 NCURSES_EXPORT(void)
-_nc_hash_map(void)
+NCURSES_SP_NAME(_nc_hash_map) (NCURSES_SP_DCL0)
 {
-    HASHMAP *sp;
+    HASHMAP *hsp;
     register int i;
     int start, shift, size;
 
-    if (screen_lines > lines_alloc) {
-	if (hashtab)
-	    free(hashtab);
-	hashtab = typeMalloc(HASHMAP, (screen_lines + 1) * 2);
-	if (!hashtab) {
-	    if (oldhash) {
-		FreeAndNull(oldhash);
+    if (screen_lines(SP_PARM) > lines_alloc(SP_PARM)) {
+	if (hashtab(SP_PARM))
+	    free(hashtab(SP_PARM));
+	hashtab(SP_PARM) = typeMalloc(HASHMAP,
+				      ((size_t) screen_lines(SP_PARM) + 1) * 2);
+	if (!hashtab(SP_PARM)) {
+	    if (oldhash(SP_PARM)) {
+		FreeAndNull(oldhash(SP_PARM));
 	    }
-	    lines_alloc = 0;
+	    lines_alloc(SP_PARM) = 0;
 	    return;
 	}
-	lines_alloc = screen_lines;
+	lines_alloc(SP_PARM) = screen_lines(SP_PARM);
     }
 
-    if (oldhash && newhash) {
+    if (oldhash(SP_PARM) && newhash(SP_PARM)) {
 	/* re-hash only changed lines */
-	for (i = 0; i < screen_lines; i++) {
-	    if (PENDING(i))
-		newhash[i] = hash(NEWTEXT(i));
+	for (i = 0; i < screen_lines(SP_PARM); i++) {
+	    if (PENDING(SP_PARM, i))
+		newhash(SP_PARM)[i] = hash(SP_PARM, NEWTEXT(SP_PARM, i));
 	}
     } else {
 	/* re-hash all */
-	if (oldhash == 0)
-	    oldhash = typeCalloc(unsigned long, (unsigned) screen_lines);
-	if (newhash == 0)
-	    newhash = typeCalloc(unsigned long, (unsigned) screen_lines);
-	if (!oldhash || !newhash)
+	if (oldhash(SP_PARM) == 0)
+	    oldhash(SP_PARM) = typeCalloc(unsigned long,
+					    (size_t) screen_lines(SP_PARM));
+	if (newhash(SP_PARM) == 0)
+	    newhash(SP_PARM) = typeCalloc(unsigned long,
+					    (size_t) screen_lines(SP_PARM));
+	if (!oldhash(SP_PARM) || !newhash(SP_PARM))
 	    return;		/* malloc failure */
-	for (i = 0; i < screen_lines; i++) {
-	    newhash[i] = hash(NEWTEXT(i));
-	    oldhash[i] = hash(OLDTEXT(i));
+	for (i = 0; i < screen_lines(SP_PARM); i++) {
+	    newhash(SP_PARM)[i] = hash(SP_PARM, NEWTEXT(SP_PARM, i));
+	    oldhash(SP_PARM)[i] = hash(SP_PARM, OLDTEXT(SP_PARM, i));
 	}
     }
 
 #ifdef HASH_VERIFY
-    for (i = 0; i < screen_lines; i++) {
-	if (newhash[i] != hash(NEWTEXT(i)))
+    for (i = 0; i < screen_lines(SP_PARM); i++) {
+	if (newhash(SP_PARM)[i] != hash(SP_PARM, NEWTEXT(SP_PARM, i)))
 	    fprintf(stderr, "error in newhash[%d]\n", i);
-	if (oldhash[i] != hash(OLDTEXT(i)))
+	if (oldhash(SP_PARM)[i] != hash(SP_PARM, OLDTEXT(SP_PARM, i)))
 	    fprintf(stderr, "error in oldhash[%d]\n", i);
     }
 #endif
@@ -320,28 +336,30 @@
     /*
      * Set up and count line-hash values.
      */
-    memset(hashtab, '\0', sizeof(*hashtab) * (screen_lines + 1) * 2);
-    for (i = 0; i < screen_lines; i++) {
-	unsigned long hashval = oldhash[i];
+    memset(hashtab(SP_PARM), '\0',
+	   sizeof(*(hashtab(SP_PARM)))
+	   * ((size_t) screen_lines(SP_PARM) + 1) * 2);
+    for (i = 0; i < screen_lines(SP_PARM); i++) {
+	unsigned long hashval = oldhash(SP_PARM)[i];
 
-	for (sp = hashtab; sp->hashval; sp++)
-	    if (sp->hashval == hashval)
+	for (hsp = hashtab(SP_PARM); hsp->hashval; hsp++)
+	    if (hsp->hashval == hashval)
 		break;
-	sp->hashval = hashval;	/* in case this is a new entry */
-	sp->oldcount++;
-	sp->oldindex = i;
+	hsp->hashval = hashval;	/* in case this is a new entry */
+	hsp->oldcount++;
+	hsp->oldindex = i;
     }
-    for (i = 0; i < screen_lines; i++) {
-	unsigned long hashval = newhash[i];
+    for (i = 0; i < screen_lines(SP_PARM); i++) {
+	unsigned long hashval = newhash(SP_PARM)[i];
 
-	for (sp = hashtab; sp->hashval; sp++)
-	    if (sp->hashval == hashval)
+	for (hsp = hashtab(SP_PARM); hsp->hashval; hsp++)
+	    if (hsp->hashval == hashval)
 		break;
-	sp->hashval = hashval;	/* in case this is a new entry */
-	sp->newcount++;
-	sp->newindex = i;
+	hsp->hashval = hashval;	/* in case this is a new entry */
+	hsp->newcount++;
+	hsp->newindex = i;
 
-	OLDNUM(i) = _NEWINDEX;	/* initialize old indices array */
+	OLDNUM(SP_PARM, i) = _NEWINDEX;		/* initialize old indices array */
     }
 
     /*
@@ -351,16 +369,16 @@
      * extending hunks by cost_effective. Otherwise, it does not
      * have any side effects.
      */
-    for (sp = hashtab; sp->hashval; sp++)
-	if (sp->oldcount == 1 && sp->newcount == 1
-	    && sp->oldindex != sp->newindex) {
+    for (hsp = hashtab(SP_PARM); hsp->hashval; hsp++)
+	if (hsp->oldcount == 1 && hsp->newcount == 1
+	    && hsp->oldindex != hsp->newindex) {
 	    TR(TRACE_UPDATE | TRACE_MOVE,
 	       ("new line %d is hash-identical to old line %d (unique)",
-		sp->newindex, sp->oldindex));
-	    OLDNUM(sp->newindex) = sp->oldindex;
+		hsp->newindex, hsp->oldindex));
+	    OLDNUM(SP_PARM, hsp->newindex) = hsp->oldindex;
 	}
 
-    grow_hunks();
+    grow_hunks(SP_PARM);
 
     /*
      * Eliminate bad or impossible shifts -- this includes removing
@@ -368,58 +386,83 @@
      * those which are to be moved too far, they are likely to destroy
      * more than carry.
      */
-    for (i = 0; i < screen_lines;) {
-	while (i < screen_lines && OLDNUM(i) == _NEWINDEX)
+    for (i = 0; i < screen_lines(SP_PARM);) {
+	while (i < screen_lines(SP_PARM) && OLDNUM(SP_PARM, i) == _NEWINDEX)
 	    i++;
-	if (i >= screen_lines)
+	if (i >= screen_lines(SP_PARM))
 	    break;
 	start = i;
-	shift = OLDNUM(i) - i;
+	shift = OLDNUM(SP_PARM, i) - i;
 	i++;
-	while (i < screen_lines && OLDNUM(i) != _NEWINDEX && OLDNUM(i) - i
-	       == shift)
+	while (i < screen_lines(SP_PARM)
+	       && OLDNUM(SP_PARM, i) != _NEWINDEX
+	       && OLDNUM(SP_PARM, i) - i == shift)
 	    i++;
 	size = i - start;
 	if (size < 3 || size + min(size / 8, 2) < abs(shift)) {
 	    while (start < i) {
-		OLDNUM(start) = _NEWINDEX;
+		OLDNUM(SP_PARM, start) = _NEWINDEX;
 		start++;
 	    }
 	}
     }
 
     /* After clearing invalid hunks, try grow the rest. */
-    grow_hunks();
+    grow_hunks(SP_PARM);
 }
 
+#if NCURSES_SP_FUNCS
+NCURSES_EXPORT(void)
+_nc_hash_map(void)
+{
+    NCURSES_SP_NAME(_nc_hash_map) (CURRENT_SCREEN);
+}
+#endif
+
+NCURSES_EXPORT(void)
+NCURSES_SP_NAME(_nc_make_oldhash) (NCURSES_SP_DCLx int i)
+{
+    if (oldhash(SP_PARM))
+	oldhash(SP_PARM)[i] = hash(SP_PARM, OLDTEXT(SP_PARM, i));
+}
+
+#if NCURSES_SP_FUNCS
 NCURSES_EXPORT(void)
 _nc_make_oldhash(int i)
 {
-    if (oldhash)
-	oldhash[i] = hash(OLDTEXT(i));
+    NCURSES_SP_NAME(_nc_make_oldhash) (CURRENT_SCREEN, i);
 }
+#endif
 
 NCURSES_EXPORT(void)
-_nc_scroll_oldhash(int n, int top, int bot)
+NCURSES_SP_NAME(_nc_scroll_oldhash) (NCURSES_SP_DCLx int n, int top, int bot)
 {
     size_t size;
     int i;
 
-    if (!oldhash)
+    if (!oldhash(SP_PARM))
 	return;
 
-    size = sizeof(*oldhash) * (bot - top + 1 - abs(n));
+    size = sizeof(*(oldhash(SP_PARM))) * (size_t) (bot - top + 1 - abs(n));
     if (n > 0) {
-	memmove(oldhash + top, oldhash + top + n, size);
+	memmove(oldhash(SP_PARM) + top, oldhash(SP_PARM) + top + n, size);
 	for (i = bot; i > bot - n; i--)
-	    oldhash[i] = hash(OLDTEXT(i));
+	    oldhash(SP_PARM)[i] = hash(SP_PARM, OLDTEXT(SP_PARM, i));
     } else {
-	memmove(oldhash + top - n, oldhash + top, size);
+	memmove(oldhash(SP_PARM) + top - n, oldhash(SP_PARM) + top, size);
 	for (i = top; i < top - n; i++)
-	    oldhash[i] = hash(OLDTEXT(i));
+	    oldhash(SP_PARM)[i] = hash(SP_PARM, OLDTEXT(SP_PARM, i));
     }
 }
 
+#if NCURSES_SP_FUNCS
+NCURSES_EXPORT(void)
+_nc_scroll_oldhash(int n, int top, int bot)
+{
+    NCURSES_SP_NAME(_nc_scroll_oldhash) (CURRENT_SCREEN, n, top, bot);
+}
+#endif
+
 #ifdef HASHDEBUG
 static void
 usage(void)
@@ -451,13 +494,13 @@
 	return EXIT_FAILURE;
     (void) _nc_alloc_screen();
 
-    for (n = 0; n < screen_lines; n++) {
+    for (n = 0; n < screen_lines(sp); n++) {
 	reallines[n] = n;
 	oldnums[n] = _NEWINDEX;
 	CharOf(oldtext[n][0]) = CharOf(newtext[n][0]) = '.';
     }
 
-    if (isatty(fileno(stdin)))
+    if (NC_ISATTY(fileno(stdin)))
 	usage();
 
 #ifdef TRACE
@@ -474,7 +517,7 @@
 	    break;
 
 	case 'l':		/* get initial line number vector */
-	    for (n = 0; n < screen_lines; n++) {
+	    for (n = 0; n < screen_lines(sp); n++) {
 		reallines[n] = n;
 		oldnums[n] = _NEWINDEX;
 	    }
@@ -487,9 +530,9 @@
 	    break;
 
 	case 'n':		/* use following letters as text of new lines */
-	    for (n = 0; n < screen_lines; n++)
+	    for (n = 0; n < screen_lines(sp); n++)
 		CharOf(newtext[n][0]) = '.';
-	    for (n = 0; n < screen_lines; n++)
+	    for (n = 0; n < screen_lines(sp); n++)
 		if (line[n + 1] == '\n')
 		    break;
 		else
@@ -497,9 +540,9 @@
 	    break;
 
 	case 'o':		/* use following letters as text of old lines */
-	    for (n = 0; n < screen_lines; n++)
+	    for (n = 0; n < screen_lines(sp); n++)
 		CharOf(oldtext[n][0]) = '.';
-	    for (n = 0; n < screen_lines; n++)
+	    for (n = 0; n < screen_lines(sp); n++)
 		if (line[n + 1] == '\n')
 		    break;
 		else
@@ -511,12 +554,12 @@
 	    _nc_linedump();
 #endif
 	    (void) fputs("Old lines: [", stdout);
-	    for (n = 0; n < screen_lines; n++)
+	    for (n = 0; n < screen_lines(sp); n++)
 		putchar(CharOf(oldtext[n][0]));
 	    putchar(']');
 	    putchar('\n');
 	    (void) fputs("New lines: [", stdout);
-	    for (n = 0; n < screen_lines; n++)
+	    for (n = 0; n < screen_lines(sp); n++)
 		putchar(CharOf(newtext[n][0]));
 	    putchar(']');
 	    putchar('\n');
diff --git a/ncurses/tty/lib_mvcur.c b/ncurses/tty/lib_mvcur.c
index 8e66fa3..0b3300b 100644
--- a/ncurses/tty/lib_mvcur.c
+++ b/ncurses/tty/lib_mvcur.c
@@ -1,5 +1,5 @@
 /****************************************************************************
- * Copyright (c) 1998-2007,2008 Free Software Foundation, Inc.              *
+ * Copyright (c) 1998-2014,2015 Free Software Foundation, Inc.              *
  *                                                                          *
  * Permission is hereby granted, free of charge, to any person obtaining a  *
  * copy of this software and associated documentation files (the            *
@@ -30,6 +30,7 @@
  *  Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995               *
  *     and: Eric S. Raymond <esr@snark.thyrsus.com>                         *
  *     and: Thomas E. Dickey                        1996-on                 *
+ *     and: Juergen Pfeifer                         2009                    *
  ****************************************************************************/
 
 /*
@@ -109,8 +110,8 @@
  * LONG_DIST and (b) further inward from the right or left edge than LONG_DIST,
  * we'll consider nonlocal.
  */
-#define NOT_LOCAL(fy, fx, ty, tx)	((tx > LONG_DIST) \
- 		 && (tx < screen_columns - 1 - LONG_DIST) \
+#define NOT_LOCAL(sp, fy, fx, ty, tx)	((tx > LONG_DIST) \
+		 && (tx < screen_columns(sp) - 1 - LONG_DIST) \
 		 && (abs(ty-fy) + abs(tx-fx) > LONG_DIST))
 
 /****************************************************************************
@@ -152,13 +153,21 @@
  */
 
 #include <curses.priv.h>
-#include <term.h>
 #include <ctype.h>
 
-MODULE_ID("$Id: lib_mvcur.c,v 1.113 2008/08/16 19:30:58 tom Exp $")
+#ifndef CUR
+#define CUR SP_TERMTYPE
+#endif
 
-#define WANT_CHAR(y, x)	SP->_newscr->_line[y].text[x]	/* desired state */
-#define BAUDRATE	cur_term->_baudrate	/* bits per second */
+MODULE_ID("$Id: lib_mvcur.c,v 1.136 2015/07/25 20:14:57 tom Exp $")
+
+#define WANT_CHAR(sp, y, x) NewScreen(sp)->_line[y].text[x]	/* desired state */
+
+#if NCURSES_SP_FUNCS
+#define BAUDRATE(sp)	sp->_term->_baudrate	/* bits per second */
+#else
+#define BAUDRATE(sp)	cur_term->_baudrate	/* bits per second */
+#endif
 
 #if defined(MAIN) || defined(NCURSES_TEST)
 #include <sys/time.h>
@@ -167,9 +176,12 @@
 static float diff;
 #endif /* MAIN */
 
+#undef NCURSES_OUTC_FUNC
+#define NCURSES_OUTC_FUNC myOutCh
+
 #define OPT_SIZE 512
 
-static int normalized_cost(const char *const cap, int affcnt);
+static int normalized_cost(NCURSES_SP_DCLx const char *const cap, int affcnt);
 
 /****************************************************************************
  *
@@ -179,34 +191,34 @@
 
 #ifdef TRACE
 static int
-trace_cost_of(const char *capname, const char *cap, int affcnt)
+trace_cost_of(NCURSES_SP_DCLx const char *capname, const char *cap, int affcnt)
 {
-    int result = _nc_msec_cost(cap, affcnt);
+    int result = NCURSES_SP_NAME(_nc_msec_cost) (NCURSES_SP_ARGx cap, affcnt);
     TR(TRACE_CHARPUT | TRACE_MOVE,
        ("CostOf %s %d %s", capname, result, _nc_visbuf(cap)));
     return result;
 }
-#define CostOf(cap,affcnt) trace_cost_of(#cap,cap,affcnt);
+#define CostOf(cap,affcnt) trace_cost_of(NCURSES_SP_ARGx #cap, cap, affcnt)
 
 static int
-trace_normalized_cost(const char *capname, const char *cap, int affcnt)
+trace_normalized_cost(NCURSES_SP_DCLx const char *capname, const char *cap, int affcnt)
 {
-    int result = normalized_cost(cap, affcnt);
+    int result = normalized_cost(NCURSES_SP_ARGx cap, affcnt);
     TR(TRACE_CHARPUT | TRACE_MOVE,
        ("NormalizedCost %s %d %s", capname, result, _nc_visbuf(cap)));
     return result;
 }
-#define NormalizedCost(cap,affcnt) trace_normalized_cost(#cap,cap,affcnt);
+#define NormalizedCost(cap,affcnt) trace_normalized_cost(NCURSES_SP_ARGx #cap, cap, affcnt)
 
 #else
 
-#define CostOf(cap,affcnt) _nc_msec_cost(cap,affcnt);
-#define NormalizedCost(cap,affcnt) normalized_cost(cap,affcnt);
+#define CostOf(cap,affcnt) NCURSES_SP_NAME(_nc_msec_cost)(NCURSES_SP_ARGx cap, affcnt)
+#define NormalizedCost(cap,affcnt) normalized_cost(NCURSES_SP_ARGx cap, affcnt)
 
 #endif
 
 NCURSES_EXPORT(int)
-_nc_msec_cost(const char *const cap, int affcnt)
+NCURSES_SP_NAME(_nc_msec_cost) (NCURSES_SP_DCLx const char *const cap, int affcnt)
 /* compute the cost of a given operation */
 {
     if (cap == 0)
@@ -222,53 +234,65 @@
 
 		for (cp += 2; *cp != '>'; cp++) {
 		    if (isdigit(UChar(*cp)))
-			number = number * 10 + (*cp - '0');
+			number = number * 10 + (float) (*cp - '0');
 		    else if (*cp == '*')
-			number *= affcnt;
+			number *= (float) affcnt;
 		    else if (*cp == '.' && (*++cp != '>') && isdigit(UChar(*cp)))
-			number += (*cp - '0') / 10.0;
+			number += (float) ((*cp - '0') / 10.0);
 		}
 
 #if NCURSES_NO_PADDING
-		if (!GetNoPadding(SP))
+		if (!GetNoPadding(SP_PARM))
 #endif
 		    cum_cost += number * 10;
-	    } else
-		cum_cost += SP->_char_padding;
+	    } else if (SP_PARM) {
+		cum_cost += (float) SP_PARM->_char_padding;
+	    }
 	}
 
 	return ((int) cum_cost);
     }
 }
 
+#if NCURSES_SP_FUNCS
+NCURSES_EXPORT(int)
+_nc_msec_cost(const char *const cap, int affcnt)
+{
+    return NCURSES_SP_NAME(_nc_msec_cost) (CURRENT_SCREEN, cap, affcnt);
+}
+#endif
+
 static int
-normalized_cost(const char *const cap, int affcnt)
+normalized_cost(NCURSES_SP_DCLx const char *const cap, int affcnt)
 /* compute the effective character-count for an operation (round up) */
 {
-    int cost = _nc_msec_cost(cap, affcnt);
+    int cost = NCURSES_SP_NAME(_nc_msec_cost) (NCURSES_SP_ARGx cap, affcnt);
     if (cost != INFINITY)
-	cost = (cost + SP->_char_padding - 1) / SP->_char_padding;
+	cost = (cost + SP_PARM->_char_padding - 1) / SP_PARM->_char_padding;
     return cost;
 }
 
 static void
-reset_scroll_region(void)
+reset_scroll_region(NCURSES_SP_DCL0)
 /* Set the scroll-region to a known state (the default) */
 {
     if (change_scroll_region) {
-	TPUTS_TRACE("change_scroll_region");
-	putp(TPARM_2(change_scroll_region, 0, screen_lines - 1));
+	NCURSES_PUTP2("change_scroll_region",
+		      TPARM_2(change_scroll_region,
+			      0, screen_lines(SP_PARM) - 1));
     }
 }
 
 NCURSES_EXPORT(void)
-_nc_mvcur_resume(void)
+NCURSES_SP_NAME(_nc_mvcur_resume) (NCURSES_SP_DCL0)
 /* what to do at initialization time and after each shellout */
 {
+    if (!SP_PARM || !IsTermInfo(SP_PARM))
+	return;
+
     /* initialize screen for cursor access */
     if (enter_ca_mode) {
-	TPUTS_TRACE("enter_ca_mode");
-	putp(enter_ca_mode);
+	NCURSES_PUTP2("enter_ca_mode", enter_ca_mode);
     }
 
     /*
@@ -280,53 +304,64 @@
      * they know the screen size.  This is useful when you're running
      * a vt100 emulation through xterm.
      */
-    reset_scroll_region();
-    SP->_cursrow = SP->_curscol = -1;
+    reset_scroll_region(NCURSES_SP_ARG);
+    SP_PARM->_cursrow = SP_PARM->_curscol = -1;
 
     /* restore cursor shape */
-    if (SP->_cursor != -1) {
-	int cursor = SP->_cursor;
-	SP->_cursor = -1;
-	curs_set(cursor);
+    if (SP_PARM->_cursor != -1) {
+	int cursor = SP_PARM->_cursor;
+	SP_PARM->_cursor = -1;
+	NCURSES_SP_NAME(curs_set) (NCURSES_SP_ARGx cursor);
     }
 }
 
+#if NCURSES_SP_FUNCS
 NCURSES_EXPORT(void)
-_nc_mvcur_init(void)
+_nc_mvcur_resume(void)
+{
+    NCURSES_SP_NAME(_nc_mvcur_resume) (CURRENT_SCREEN);
+}
+#endif
+
+NCURSES_EXPORT(void)
+NCURSES_SP_NAME(_nc_mvcur_init) (NCURSES_SP_DCL0)
 /* initialize the cost structure */
 {
-    if (isatty(fileno(SP->_ofp)))
-	SP->_char_padding = ((BAUDBYTE * 1000 * 10)
-			     / (BAUDRATE > 0 ? BAUDRATE : 9600));
-    else
-	SP->_char_padding = 1;	/* must be nonzero */
-    if (SP->_char_padding <= 0)
-	SP->_char_padding = 1;	/* must be nonzero */
-    TR(TRACE_CHARPUT | TRACE_MOVE, ("char_padding %d msecs", SP->_char_padding));
+    if (SP_PARM->_ofp && NC_ISATTY(fileno(SP_PARM->_ofp))) {
+	SP_PARM->_char_padding = ((BAUDBYTE * 1000 * 10)
+				  / (BAUDRATE(SP_PARM) > 0
+				     ? BAUDRATE(SP_PARM)
+				     : 9600));
+    } else {
+	SP_PARM->_char_padding = 1;	/* must be nonzero */
+    }
+    if (SP_PARM->_char_padding <= 0)
+	SP_PARM->_char_padding = 1;	/* must be nonzero */
+    TR(TRACE_CHARPUT | TRACE_MOVE, ("char_padding %d msecs", SP_PARM->_char_padding));
 
     /* non-parameterized local-motion strings */
-    SP->_cr_cost = CostOf(carriage_return, 0);
-    SP->_home_cost = CostOf(cursor_home, 0);
-    SP->_ll_cost = CostOf(cursor_to_ll, 0);
+    SP_PARM->_cr_cost = CostOf(carriage_return, 0);
+    SP_PARM->_home_cost = CostOf(cursor_home, 0);
+    SP_PARM->_ll_cost = CostOf(cursor_to_ll, 0);
 #if USE_HARD_TABS
     if (getenv("NCURSES_NO_HARD_TABS") == 0) {
-	SP->_ht_cost = CostOf(tab, 0);
-	SP->_cbt_cost = CostOf(back_tab, 0);
+	SP_PARM->_ht_cost = CostOf(tab, 0);
+	SP_PARM->_cbt_cost = CostOf(back_tab, 0);
     } else {
-	SP->_ht_cost = INFINITY;
-	SP->_cbt_cost = INFINITY;
+	SP_PARM->_ht_cost = INFINITY;
+	SP_PARM->_cbt_cost = INFINITY;
     }
 #endif /* USE_HARD_TABS */
-    SP->_cub1_cost = CostOf(cursor_left, 0);
-    SP->_cuf1_cost = CostOf(cursor_right, 0);
-    SP->_cud1_cost = CostOf(cursor_down, 0);
-    SP->_cuu1_cost = CostOf(cursor_up, 0);
+    SP_PARM->_cub1_cost = CostOf(cursor_left, 0);
+    SP_PARM->_cuf1_cost = CostOf(cursor_right, 0);
+    SP_PARM->_cud1_cost = CostOf(cursor_down, 0);
+    SP_PARM->_cuu1_cost = CostOf(cursor_up, 0);
 
-    SP->_smir_cost = CostOf(enter_insert_mode, 0);
-    SP->_rmir_cost = CostOf(exit_insert_mode, 0);
-    SP->_ip_cost = 0;
+    SP_PARM->_smir_cost = CostOf(enter_insert_mode, 0);
+    SP_PARM->_rmir_cost = CostOf(exit_insert_mode, 0);
+    SP_PARM->_ip_cost = 0;
     if (insert_padding) {
-	SP->_ip_cost = CostOf(insert_padding, 0);
+	SP_PARM->_ip_cost = CostOf(insert_padding, 0);
     }
 
     /*
@@ -335,7 +370,7 @@
      * can treat it like absolute screen addressing.  This seems to be true
      * for all cursor_mem_address terminal types in the terminfo database.
      */
-    SP->_address_cursor = cursor_address ? cursor_address : cursor_mem_address;
+    SP_PARM->_address_cursor = cursor_address ? cursor_address : cursor_mem_address;
 
     /*
      * Parametrized local-motion strings.  This static cost computation
@@ -361,40 +396,43 @@
      * All these averages depend on the assumption that all parameter values
      * are equally probable.
      */
-    SP->_cup_cost = CostOf(TPARM_2(SP->_address_cursor, 23, 23), 1);
-    SP->_cub_cost = CostOf(TPARM_1(parm_left_cursor, 23), 1);
-    SP->_cuf_cost = CostOf(TPARM_1(parm_right_cursor, 23), 1);
-    SP->_cud_cost = CostOf(TPARM_1(parm_down_cursor, 23), 1);
-    SP->_cuu_cost = CostOf(TPARM_1(parm_up_cursor, 23), 1);
-    SP->_hpa_cost = CostOf(TPARM_1(column_address, 23), 1);
-    SP->_vpa_cost = CostOf(TPARM_1(row_address, 23), 1);
+    SP_PARM->_cup_cost = CostOf(TPARM_2(SP_PARM->_address_cursor, 23, 23), 1);
+    SP_PARM->_cub_cost = CostOf(TPARM_1(parm_left_cursor, 23), 1);
+    SP_PARM->_cuf_cost = CostOf(TPARM_1(parm_right_cursor, 23), 1);
+    SP_PARM->_cud_cost = CostOf(TPARM_1(parm_down_cursor, 23), 1);
+    SP_PARM->_cuu_cost = CostOf(TPARM_1(parm_up_cursor, 23), 1);
+    SP_PARM->_hpa_cost = CostOf(TPARM_1(column_address, 23), 1);
+    SP_PARM->_vpa_cost = CostOf(TPARM_1(row_address, 23), 1);
 
     /* non-parameterized screen-update strings */
-    SP->_ed_cost = NormalizedCost(clr_eos, 1);
-    SP->_el_cost = NormalizedCost(clr_eol, 1);
-    SP->_el1_cost = NormalizedCost(clr_bol, 1);
-    SP->_dch1_cost = NormalizedCost(delete_character, 1);
-    SP->_ich1_cost = NormalizedCost(insert_character, 1);
+    SP_PARM->_ed_cost = NormalizedCost(clr_eos, 1);
+    SP_PARM->_el_cost = NormalizedCost(clr_eol, 1);
+    SP_PARM->_el1_cost = NormalizedCost(clr_bol, 1);
+    SP_PARM->_dch1_cost = NormalizedCost(delete_character, 1);
+    SP_PARM->_ich1_cost = NormalizedCost(insert_character, 1);
 
     /*
      * If this is a bce-terminal, we want to bias the choice so we use clr_eol
      * rather than spaces at the end of a line.
      */
     if (back_color_erase)
-	SP->_el_cost = 0;
+	SP_PARM->_el_cost = 0;
 
     /* parameterized screen-update strings */
-    SP->_dch_cost = NormalizedCost(TPARM_1(parm_dch, 23), 1);
-    SP->_ich_cost = NormalizedCost(TPARM_1(parm_ich, 23), 1);
-    SP->_ech_cost = NormalizedCost(TPARM_1(erase_chars, 23), 1);
-    SP->_rep_cost = NormalizedCost(TPARM_2(repeat_char, ' ', 23), 1);
+    SP_PARM->_dch_cost = NormalizedCost(TPARM_1(parm_dch, 23), 1);
+    SP_PARM->_ich_cost = NormalizedCost(TPARM_1(parm_ich, 23), 1);
+    SP_PARM->_ech_cost = NormalizedCost(TPARM_1(erase_chars, 23), 1);
+    SP_PARM->_rep_cost = NormalizedCost(TPARM_2(repeat_char, ' ', 23), 1);
 
-    SP->_cup_ch_cost = NormalizedCost(TPARM_2(SP->_address_cursor, 23, 23), 1);
-    SP->_hpa_ch_cost = NormalizedCost(TPARM_1(column_address, 23), 1);
-    SP->_cuf_ch_cost = NormalizedCost(TPARM_1(parm_right_cursor, 23), 1);
-    SP->_inline_cost = min(SP->_cup_ch_cost,
-			   min(SP->_hpa_ch_cost,
-			       SP->_cuf_ch_cost));
+    SP_PARM->_cup_ch_cost = NormalizedCost(
+					      TPARM_2(SP_PARM->_address_cursor,
+						      23, 23),
+					      1);
+    SP_PARM->_hpa_ch_cost = NormalizedCost(TPARM_1(column_address, 23), 1);
+    SP_PARM->_cuf_ch_cost = NormalizedCost(TPARM_1(parm_right_cursor, 23), 1);
+    SP_PARM->_inline_cost = min(SP_PARM->_cup_ch_cost,
+				min(SP_PARM->_hpa_ch_cost,
+				    SP_PARM->_cuf_ch_cost));
 
     /*
      * If save_cursor is used within enter_ca_mode, we should not use it for
@@ -411,30 +449,40 @@
     }
 
     /*
-     * A different, possibly better way to arrange this would be to set
-     * SP->_endwin = TRUE at window initialization time and let this be
+     * A different, possibly better way to arrange this would be to set the
+     * SCREEN's _endwin to TRUE at window initialization time and let this be
      * called by doupdate's return-from-shellout code.
      */
-    _nc_mvcur_resume();
+    NCURSES_SP_NAME(_nc_mvcur_resume) (NCURSES_SP_ARG);
 }
 
+#if NCURSES_SP_FUNCS
 NCURSES_EXPORT(void)
-_nc_mvcur_wrap(void)
+_nc_mvcur_init(void)
+{
+    NCURSES_SP_NAME(_nc_mvcur_init) (CURRENT_SCREEN);
+}
+#endif
+
+NCURSES_EXPORT(void)
+NCURSES_SP_NAME(_nc_mvcur_wrap) (NCURSES_SP_DCL0)
 /* wrap up cursor-addressing mode */
 {
     /* leave cursor at screen bottom */
-    mvcur(-1, -1, screen_lines - 1, 0);
+    TINFO_MVCUR(NCURSES_SP_ARGx -1, -1, screen_lines(SP_PARM) - 1, 0);
+
+    if (!SP_PARM || !IsTermInfo(SP_PARM))
+	return;
 
     /* set cursor to normal mode */
-    if (SP->_cursor != -1) {
-	int cursor = SP->_cursor;
-	curs_set(1);
-	SP->_cursor = cursor;
+    if (SP_PARM->_cursor != -1) {
+	int cursor = SP_PARM->_cursor;
+	NCURSES_SP_NAME(curs_set) (NCURSES_SP_ARGx 1);
+	SP_PARM->_cursor = cursor;
     }
 
     if (exit_ca_mode) {
-	TPUTS_TRACE("exit_ca_mode");
-	putp(exit_ca_mode);
+	NCURSES_PUTP2("exit_ca_mode", exit_ca_mode);
     }
     /*
      * Reset terminal's tab counter.  There's a long-time bug that
@@ -444,9 +492,17 @@
      * escape sequences that reset things as column positions.
      * Utter a \r to reset this invisibly.
      */
-    _nc_outch('\r');
+    NCURSES_SP_NAME(_nc_outch) (NCURSES_SP_ARGx '\r');
 }
 
+#if NCURSES_SP_FUNCS
+NCURSES_EXPORT(void)
+_nc_mvcur_wrap(void)
+{
+    NCURSES_SP_NAME(_nc_mvcur_wrap) (CURRENT_SCREEN);
+}
+#endif
+
 /****************************************************************************
  *
  * Optimized cursor movement
@@ -459,7 +515,7 @@
 static NCURSES_INLINE int
 repeated_append(string_desc * target, int total, int num, int repeat, const char *src)
 {
-    size_t need = repeat * strlen(src);
+    size_t need = (size_t) repeat * strlen(src);
 
     if (need < target->s_size) {
 	while (repeat-- > 0) {
@@ -486,8 +542,13 @@
 #define LASTTAB(fr)	((fr > 0) ? ((fr - 1) / init_tabs) * init_tabs : -1)
 
 static int
-relative_move(string_desc * target, int from_y, int from_x, int to_y, int
-	      to_x, bool ovw)
+relative_move(NCURSES_SP_DCLx
+	      string_desc * target,
+	      int from_y,
+	      int from_x,
+	      int to_y,
+	      int to_x,
+	      int ovw)
 /* move via local motions (cuu/cuu1/cud/cud1/cub1/cub/cuf1/cuf/vpa/hpa) */
 {
     string_desc save;
@@ -500,38 +561,38 @@
 
 	if (row_address != 0
 	    && _nc_safe_strcat(target, TPARM_1(row_address, to_y))) {
-	    vcost = SP->_vpa_cost;
+	    vcost = SP_PARM->_vpa_cost;
 	}
 
 	if (to_y > from_y) {
 	    n = (to_y - from_y);
 
 	    if (parm_down_cursor
-		&& SP->_cud_cost < vcost
+		&& SP_PARM->_cud_cost < vcost
 		&& _nc_safe_strcat(_nc_str_copy(target, &save),
 				   TPARM_1(parm_down_cursor, n))) {
-		vcost = SP->_cud_cost;
+		vcost = SP_PARM->_cud_cost;
 	    }
 
 	    if (cursor_down
-		&& (*cursor_down != '\n' || SP->_nl)
-		&& (n * SP->_cud1_cost < vcost)) {
+		&& (*cursor_down != '\n' || SP_PARM->_nl)
+		&& (n * SP_PARM->_cud1_cost < vcost)) {
 		vcost = repeated_append(_nc_str_copy(target, &save), 0,
-					SP->_cud1_cost, n, cursor_down);
+					SP_PARM->_cud1_cost, n, cursor_down);
 	    }
 	} else {		/* (to_y < from_y) */
 	    n = (from_y - to_y);
 
 	    if (parm_up_cursor
-		&& SP->_cuu_cost < vcost
+		&& SP_PARM->_cuu_cost < vcost
 		&& _nc_safe_strcat(_nc_str_copy(target, &save),
 				   TPARM_1(parm_up_cursor, n))) {
-		vcost = SP->_cuu_cost;
+		vcost = SP_PARM->_cuu_cost;
 	    }
 
-	    if (cursor_up && (n * SP->_cuu1_cost < vcost)) {
+	    if (cursor_up && (n * SP_PARM->_cuu1_cost < vcost)) {
 		vcost = repeated_append(_nc_str_copy(target, &save), 0,
-					SP->_cuu1_cost, n, cursor_up);
+					SP_PARM->_cuu1_cost, n, cursor_up);
 	    }
 	}
 
@@ -550,17 +611,17 @@
 	if (column_address
 	    && _nc_safe_strcat(_nc_str_copy(target, &save),
 			       TPARM_1(column_address, to_x))) {
-	    hcost = SP->_hpa_cost;
+	    hcost = SP_PARM->_hpa_cost;
 	}
 
 	if (to_x > from_x) {
 	    n = to_x - from_x;
 
 	    if (parm_right_cursor
-		&& SP->_cuf_cost < hcost
+		&& SP_PARM->_cuf_cost < hcost
 		&& _nc_safe_strcat(_nc_str_copy(target, &save),
 				   TPARM_1(parm_right_cursor, n))) {
-		hcost = SP->_cuf_cost;
+		hcost = SP_PARM->_cuf_cost;
 	    }
 
 	    if (cursor_right) {
@@ -575,7 +636,7 @@
 
 		    for (fr = from_x; (nxt = NEXTTAB(fr)) <= to_x; fr = nxt) {
 			lhcost = repeated_append(&check, lhcost,
-						 SP->_ht_cost, 1, tab);
+						 SP_PARM->_ht_cost, 1, tab);
 			if (lhcost == INFINITY)
 			    break;
 		    }
@@ -599,7 +660,7 @@
 		    && n < (int) check.s_size
 		    && vcost == 0
 		    && str[0] == '\0') {
-		    int wanted = CharOf(WANT_CHAR(to_y, from_x));
+		    int wanted = CharOf(WANT_CHAR(SP_PARM, to_y, from_x));
 		    if (is8bits(wanted) && isdigit(wanted))
 			ovw = FALSE;
 		}
@@ -616,8 +677,8 @@
 		    int i;
 
 		    for (i = 0; i < n; i++) {
-			NCURSES_CH_T ch = WANT_CHAR(to_y, from_x + i);
-			if (!SameAttrOf(ch, SCREEN_ATTRS(SP))
+			NCURSES_CH_T ch = WANT_CHAR(SP_PARM, to_y, from_x + i);
+			if (!SameAttrOf(ch, SCREEN_ATTRS(SP_PARM))
 #if USE_WIDEC_SUPPORT
 			    || !Charable(ch)
 #endif
@@ -631,13 +692,13 @@
 		    int i;
 
 		    for (i = 0; i < n; i++)
-			*check.s_tail++ = (char) CharOf(WANT_CHAR(to_y,
+			*check.s_tail++ = (char) CharOf(WANT_CHAR(SP_PARM, to_y,
 								  from_x + i));
 		    *check.s_tail = '\0';
-		    check.s_size -= n;
-		    lhcost += n * SP->_char_padding;
+		    check.s_size -= (size_t) n;
+		    lhcost += n * SP_PARM->_char_padding;
 		} else {
-		    lhcost = repeated_append(&check, lhcost, SP->_cuf1_cost,
+		    lhcost = repeated_append(&check, lhcost, SP_PARM->_cuf1_cost,
 					     n, cursor_right);
 		}
 
@@ -650,10 +711,10 @@
 	    n = from_x - to_x;
 
 	    if (parm_left_cursor
-		&& SP->_cub_cost < hcost
+		&& SP_PARM->_cub_cost < hcost
 		&& _nc_safe_strcat(_nc_str_copy(target, &save),
 				   TPARM_1(parm_left_cursor, n))) {
-		hcost = SP->_cub_cost;
+		hcost = SP_PARM->_cub_cost;
 	    }
 
 	    if (cursor_left) {
@@ -667,7 +728,8 @@
 
 		    for (fr = from_x; (nxt = LASTTAB(fr)) >= to_x; fr = nxt) {
 			lhcost = repeated_append(&check, lhcost,
-						 SP->_cbt_cost, 1, back_tab);
+						 SP_PARM->_cbt_cost,
+						 1, back_tab);
 			if (lhcost == INFINITY)
 			    break;
 		    }
@@ -676,7 +738,9 @@
 		}
 #endif /* USE_HARD_TABS */
 
-		lhcost = repeated_append(&check, lhcost, SP->_cub1_cost, n, cursor_left);
+		lhcost = repeated_append(&check, lhcost,
+					 SP_PARM->_cub1_cost,
+					 n, cursor_left);
 
 		if (lhcost < hcost
 		    && _nc_safe_strcat(_nc_str_copy(target, &save), str)) {
@@ -705,7 +769,10 @@
  */
 
 static NCURSES_INLINE int
-onscreen_mvcur(int yold, int xold, int ynew, int xnew, bool ovw)
+onscreen_mvcur(NCURSES_SP_DCLx
+	       int yold, int xold,
+	       int ynew, int xnew, int ovw,
+	       NCURSES_SP_OUTC myOutCh)
 /* onscreen move from (yold, xold) to (ynew, xnew) */
 {
     string_desc result;
@@ -723,9 +790,9 @@
 #define InitResult _nc_str_init(&result, buffer, sizeof(buffer))
 
     /* tactic #0: use direct cursor addressing */
-    if (_nc_safe_strcpy(InitResult, TPARM_2(SP->_address_cursor, ynew, xnew))) {
+    if (_nc_safe_strcpy(InitResult, TPARM_2(SP_PARM->_address_cursor, ynew, xnew))) {
 	tactic = 0;
-	usecost = SP->_cup_cost;
+	usecost = SP_PARM->_cup_cost;
 
 #if defined(TRACE) || defined(NCURSES_TEST)
 	if (!(_nc_optimize_enable & OPTIMIZE_MVCUR))
@@ -740,7 +807,7 @@
 	 * (like, say, local-movement \n getting mapped to some obscure
 	 * character because A_ALTCHARSET is on).
 	 */
-	if (yold == -1 || xold == -1 || NOT_LOCAL(yold, xold, ynew, xnew)) {
+	if (yold == -1 || xold == -1 || NOT_LOCAL(SP_PARM, yold, xold, ynew, xnew)) {
 #if defined(MAIN) || defined(NCURSES_TEST)
 	    if (!profiling) {
 		(void) fputs("nonlocal\n", stderr);
@@ -754,8 +821,10 @@
 #ifndef NO_OPTIMIZE
     /* tactic #1: use local movement */
     if (yold != -1 && xold != -1
-	&& ((newcost = relative_move(NullResult, yold, xold, ynew, xnew,
-				     ovw)) != INFINITY)
+	&& ((newcost = relative_move(NCURSES_SP_ARGx
+				     NullResult,
+				     yold, xold,
+				     ynew, xnew, ovw)) != INFINITY)
 	&& newcost < usecost) {
 	tactic = 1;
 	usecost = newcost;
@@ -763,42 +832,51 @@
 
     /* tactic #2: use carriage-return + local movement */
     if (yold != -1 && carriage_return
-	&& ((newcost = relative_move(NullResult, yold, 0, ynew, xnew, ovw))
-	    != INFINITY)
-	&& SP->_cr_cost + newcost < usecost) {
+	&& ((newcost = relative_move(NCURSES_SP_ARGx
+				     NullResult,
+				     yold, 0,
+				     ynew, xnew, ovw)) != INFINITY)
+	&& SP_PARM->_cr_cost + newcost < usecost) {
 	tactic = 2;
-	usecost = SP->_cr_cost + newcost;
+	usecost = SP_PARM->_cr_cost + newcost;
     }
 
     /* tactic #3: use home-cursor + local movement */
     if (cursor_home
-	&& ((newcost = relative_move(NullResult, 0, 0, ynew, xnew, ovw)) != INFINITY)
-	&& SP->_home_cost + newcost < usecost) {
+	&& ((newcost = relative_move(NCURSES_SP_ARGx
+				     NullResult,
+				     0, 0,
+				     ynew, xnew, ovw)) != INFINITY)
+	&& SP_PARM->_home_cost + newcost < usecost) {
 	tactic = 3;
-	usecost = SP->_home_cost + newcost;
+	usecost = SP_PARM->_home_cost + newcost;
     }
 
     /* tactic #4: use home-down + local movement */
     if (cursor_to_ll
-	&& ((newcost = relative_move(NullResult, screen_lines - 1, 0, ynew,
-				     xnew, ovw)) != INFINITY)
-	&& SP->_ll_cost + newcost < usecost) {
+	&& ((newcost = relative_move(NCURSES_SP_ARGx
+				     NullResult,
+				     screen_lines(SP_PARM) - 1, 0,
+				     ynew, xnew, ovw)) != INFINITY)
+	&& SP_PARM->_ll_cost + newcost < usecost) {
 	tactic = 4;
-	usecost = SP->_ll_cost + newcost;
+	usecost = SP_PARM->_ll_cost + newcost;
     }
 
     /*
      * tactic #5: use left margin for wrap to right-hand side,
      * unless strange wrap behavior indicated by xenl might hose us.
      */
-    t5_cr_cost = (xold > 0 ? SP->_cr_cost : 0);
+    t5_cr_cost = (xold > 0 ? SP_PARM->_cr_cost : 0);
     if (auto_left_margin && !eat_newline_glitch
 	&& yold > 0 && cursor_left
-	&& ((newcost = relative_move(NullResult, yold - 1, screen_columns -
-				     1, ynew, xnew, ovw)) != INFINITY)
-	&& t5_cr_cost + SP->_cub1_cost + newcost < usecost) {
+	&& ((newcost = relative_move(NCURSES_SP_ARGx
+				     NullResult,
+				     yold - 1, screen_columns(SP_PARM) - 1,
+				     ynew, xnew, ovw)) != INFINITY)
+	&& t5_cr_cost + SP_PARM->_cub1_cost + newcost < usecost) {
 	tactic = 5;
-	usecost = t5_cr_cost + SP->_cub1_cost + newcost;
+	usecost = t5_cr_cost + SP_PARM->_cub1_cost + newcost;
     }
 
     /*
@@ -808,26 +886,39 @@
 	InitResult;
     switch (tactic) {
     case 1:
-	(void) relative_move(&result, yold, xold, ynew, xnew, ovw);
+	(void) relative_move(NCURSES_SP_ARGx
+			     &result,
+			     yold, xold,
+			     ynew, xnew, ovw);
 	break;
     case 2:
 	(void) _nc_safe_strcpy(&result, carriage_return);
-	(void) relative_move(&result, yold, 0, ynew, xnew, ovw);
+	(void) relative_move(NCURSES_SP_ARGx
+			     &result,
+			     yold, 0,
+			     ynew, xnew, ovw);
 	break;
     case 3:
 	(void) _nc_safe_strcpy(&result, cursor_home);
-	(void) relative_move(&result, 0, 0, ynew, xnew, ovw);
+	(void) relative_move(NCURSES_SP_ARGx
+			     &result, 0, 0,
+			     ynew, xnew, ovw);
 	break;
     case 4:
 	(void) _nc_safe_strcpy(&result, cursor_to_ll);
-	(void) relative_move(&result, screen_lines - 1, 0, ynew, xnew, ovw);
+	(void) relative_move(NCURSES_SP_ARGx
+			     &result,
+			     screen_lines(SP_PARM) - 1, 0,
+			     ynew, xnew, ovw);
 	break;
     case 5:
 	if (xold > 0)
 	    (void) _nc_safe_strcat(&result, carriage_return);
 	(void) _nc_safe_strcat(&result, cursor_left);
-	(void) relative_move(&result, yold - 1, screen_columns - 1, ynew,
-			     xnew, ovw);
+	(void) relative_move(NCURSES_SP_ARGx
+			     &result,
+			     yold - 1, screen_columns(SP_PARM) - 1,
+			     ynew, xnew, ovw);
 	break;
     }
 #endif /* !NO_OPTIMIZE */
@@ -845,25 +936,32 @@
 
     if (usecost != INFINITY) {
 	TPUTS_TRACE("mvcur");
-	tputs(buffer, 1, _nc_outch);
-	SP->_cursrow = ynew;
-	SP->_curscol = xnew;
+	NCURSES_SP_NAME(tputs) (NCURSES_SP_ARGx
+				buffer, 1, myOutCh);
+	SP_PARM->_cursrow = ynew;
+	SP_PARM->_curscol = xnew;
 	return (OK);
     } else
 	return (ERR);
 }
 
-NCURSES_EXPORT(int)
-mvcur(int yold, int xold, int ynew, int xnew)
-/* optimized cursor move from (yold, xold) to (ynew, xnew) */
+/*
+ * optimized cursor move from (yold, xold) to (ynew, xnew)
+ */
+static int
+_nc_real_mvcur(NCURSES_SP_DCLx
+	       int yold, int xold,
+	       int ynew, int xnew,
+	       NCURSES_SP_OUTC myOutCh,
+	       int ovw)
 {
     NCURSES_CH_T oldattr;
     int code;
 
-    TR(TRACE_CALLS | TRACE_MOVE, (T_CALLED("mvcur(%d,%d,%d,%d)"),
-				  yold, xold, ynew, xnew));
+    TR(TRACE_CALLS | TRACE_MOVE, (T_CALLED("_nc_tinfo_mvcur(%p,%d,%d,%d,%d)"),
+				  (void *) SP_PARM, yold, xold, ynew, xnew));
 
-    if (SP == 0) {
+    if (SP_PARM == 0) {
 	code = ERR;
     } else if (yold == ynew && xold == xnew) {
 	code = OK;
@@ -874,9 +972,9 @@
 	 * column position implied by wraparound or the lack thereof and
 	 * rolling up the screen to get ynew on the screen.
 	 */
-	if (xnew >= screen_columns) {
-	    ynew += xnew / screen_columns;
-	    xnew %= screen_columns;
+	if (xnew >= screen_columns(SP_PARM)) {
+	    ynew += xnew / screen_columns(SP_PARM);
+	    xnew %= screen_columns(SP_PARM);
 	}
 
 	/*
@@ -884,38 +982,38 @@
 	 * character set -- these have a strong tendency to screw up the CR &
 	 * LF used for local character motions!
 	 */
-	oldattr = SCREEN_ATTRS(SP);
+	oldattr = SCREEN_ATTRS(SP_PARM);
 	if ((AttrOf(oldattr) & A_ALTCHARSET)
 	    || (AttrOf(oldattr) && !move_standout_mode)) {
 	    TR(TRACE_CHARPUT, ("turning off (%#lx) %s before move",
 			       (unsigned long) AttrOf(oldattr),
 			       _traceattr(AttrOf(oldattr))));
-	    (void) VIDATTR(A_NORMAL, 0);
+	    (void) VIDATTR(SP_PARM, A_NORMAL, 0);
 	}
 
-	if (xold >= screen_columns) {
+	if (xold >= screen_columns(SP_PARM)) {
 	    int l;
 
-	    if (SP->_nl) {
-		l = (xold + 1) / screen_columns;
+	    if (SP_PARM->_nl) {
+		l = (xold + 1) / screen_columns(SP_PARM);
 		yold += l;
-		if (yold >= screen_lines)
-		    l -= (yold - screen_lines - 1);
+		if (yold >= screen_lines(SP_PARM))
+		    l -= (yold - screen_lines(SP_PARM) - 1);
 
 		if (l > 0) {
 		    if (carriage_return) {
-			TPUTS_TRACE("carriage_return");
-			putp(carriage_return);
-		    } else
-			_nc_outch('\r');
+			NCURSES_PUTP2("carriage_return", carriage_return);
+		    } else {
+			myOutCh(NCURSES_SP_ARGx '\r');
+		    }
 		    xold = 0;
 
 		    while (l > 0) {
 			if (newline) {
-			    TPUTS_TRACE("newline");
-			    putp(newline);
-			} else
-			    _nc_outch('\n');
+			    NCURSES_PUTP2("newline", newline);
+			} else {
+			    myOutCh(NCURSES_SP_ARGx '\n');
+			}
 			l--;
 		    }
 		}
@@ -929,27 +1027,88 @@
 	    }
 	}
 
-	if (yold > screen_lines - 1)
-	    yold = screen_lines - 1;
-	if (ynew > screen_lines - 1)
-	    ynew = screen_lines - 1;
+	if (yold > screen_lines(SP_PARM) - 1)
+	    yold = screen_lines(SP_PARM) - 1;
+	if (ynew > screen_lines(SP_PARM) - 1)
+	    ynew = screen_lines(SP_PARM) - 1;
 
 	/* destination location is on screen now */
-	code = onscreen_mvcur(yold, xold, ynew, xnew, TRUE);
+	code = onscreen_mvcur(NCURSES_SP_ARGx yold, xold, ynew, xnew, ovw, myOutCh);
 
 	/*
 	 * Restore attributes if we disabled them before moving.
 	 */
-	if (!SameAttrOf(oldattr, SCREEN_ATTRS(SP))) {
+	if (!SameAttrOf(oldattr, SCREEN_ATTRS(SP_PARM))) {
 	    TR(TRACE_CHARPUT, ("turning on (%#lx) %s after move",
 			       (unsigned long) AttrOf(oldattr),
 			       _traceattr(AttrOf(oldattr))));
-	    (void) VIDATTR(AttrOf(oldattr), GetPair(oldattr));
+	    (void) VIDATTR(SP_PARM, AttrOf(oldattr), GetPair(oldattr));
 	}
     }
     returnCode(code);
 }
 
+/*
+ * These entrypoints are used within the library.
+ */
+NCURSES_EXPORT(int)
+NCURSES_SP_NAME(_nc_mvcur) (NCURSES_SP_DCLx
+			    int yold, int xold,
+			    int ynew, int xnew)
+{
+    return _nc_real_mvcur(NCURSES_SP_ARGx yold, xold, ynew, xnew,
+			  NCURSES_SP_NAME(_nc_outch),
+			  TRUE);
+}
+
+#if NCURSES_SP_FUNCS
+NCURSES_EXPORT(int)
+_nc_mvcur(int yold, int xold,
+	  int ynew, int xnew)
+{
+    return NCURSES_SP_NAME(_nc_mvcur) (CURRENT_SCREEN, yold, xold, ynew, xnew);
+}
+#endif
+
+#if defined(USE_TERM_DRIVER)
+/*
+ * The terminal driver does not support the external "mvcur()".
+ */
+NCURSES_EXPORT(int)
+TINFO_MVCUR(NCURSES_SP_DCLx int yold, int xold, int ynew, int xnew)
+{
+    return _nc_real_mvcur(NCURSES_SP_ARGx
+			  yold, xold,
+			  ynew, xnew,
+			  NCURSES_SP_NAME(_nc_outch),
+			  TRUE);
+}
+
+#else /* !USE_TERM_DRIVER */
+
+/*
+ * These entrypoints support users of the library.
+ */
+NCURSES_EXPORT(int)
+NCURSES_SP_NAME(mvcur) (NCURSES_SP_DCLx int yold, int xold, int ynew,
+			int xnew)
+{
+    return _nc_real_mvcur(NCURSES_SP_ARGx
+			  yold, xold,
+			  ynew, xnew,
+			  NCURSES_SP_NAME(_nc_putchar),
+			  FALSE);
+}
+
+#if NCURSES_SP_FUNCS
+NCURSES_EXPORT(int)
+mvcur(int yold, int xold, int ynew, int xnew)
+{
+    return NCURSES_SP_NAME(mvcur) (CURRENT_SCREEN, yold, xold, ynew, xnew);
+}
+#endif
+#endif /* USE_TERM_DRIVER */
+
 #if defined(TRACE) || defined(NCURSES_TEST)
 NCURSES_EXPORT_VAR(int) _nc_optimize_enable = OPTIMIZE_ALL;
 #endif
@@ -1028,7 +1187,6 @@
     baudrate();
 
     _nc_mvcur_init();
-    NC_BUFFERED(FALSE);
 
     (void) puts("The mvcur tester.  Type ? for help");
 
@@ -1120,7 +1278,7 @@
 		}
 	    }
 	} else if (buf[0] == 'i') {
-	    dump_init((char *) NULL, F_TERMINFO, S_TERMINFO, 70, 0, FALSE);
+	    dump_init(NULL, F_TERMINFO, S_TERMINFO, 70, 0, 0, FALSE, FALSE);
 	    dump_entry(&cur_term->type, FALSE, TRUE, 0, 0);
 	    putchar('\n');
 	} else if (buf[0] == 'o') {
@@ -1212,25 +1370,25 @@
 			   speeds[i], overhead, totalest);
 	    }
 	} else if (buf[0] == 'c') {
-	    (void) printf("char padding: %d\n", SP->_char_padding);
-	    (void) printf("cr cost: %d\n", SP->_cr_cost);
-	    (void) printf("cup cost: %d\n", SP->_cup_cost);
-	    (void) printf("home cost: %d\n", SP->_home_cost);
-	    (void) printf("ll cost: %d\n", SP->_ll_cost);
+	    (void) printf("char padding: %d\n", CURRENT_SCREEN->_char_padding);
+	    (void) printf("cr cost: %d\n", CURRENT_SCREEN->_cr_cost);
+	    (void) printf("cup cost: %d\n", CURRENT_SCREEN->_cup_cost);
+	    (void) printf("home cost: %d\n", CURRENT_SCREEN->_home_cost);
+	    (void) printf("ll cost: %d\n", CURRENT_SCREEN->_ll_cost);
 #if USE_HARD_TABS
-	    (void) printf("ht cost: %d\n", SP->_ht_cost);
-	    (void) printf("cbt cost: %d\n", SP->_cbt_cost);
+	    (void) printf("ht cost: %d\n", CURRENT_SCREEN->_ht_cost);
+	    (void) printf("cbt cost: %d\n", CURRENT_SCREEN->_cbt_cost);
 #endif /* USE_HARD_TABS */
-	    (void) printf("cub1 cost: %d\n", SP->_cub1_cost);
-	    (void) printf("cuf1 cost: %d\n", SP->_cuf1_cost);
-	    (void) printf("cud1 cost: %d\n", SP->_cud1_cost);
-	    (void) printf("cuu1 cost: %d\n", SP->_cuu1_cost);
-	    (void) printf("cub cost: %d\n", SP->_cub_cost);
-	    (void) printf("cuf cost: %d\n", SP->_cuf_cost);
-	    (void) printf("cud cost: %d\n", SP->_cud_cost);
-	    (void) printf("cuu cost: %d\n", SP->_cuu_cost);
-	    (void) printf("hpa cost: %d\n", SP->_hpa_cost);
-	    (void) printf("vpa cost: %d\n", SP->_vpa_cost);
+	    (void) printf("cub1 cost: %d\n", CURRENT_SCREEN->_cub1_cost);
+	    (void) printf("cuf1 cost: %d\n", CURRENT_SCREEN->_cuf1_cost);
+	    (void) printf("cud1 cost: %d\n", CURRENT_SCREEN->_cud1_cost);
+	    (void) printf("cuu1 cost: %d\n", CURRENT_SCREEN->_cuu1_cost);
+	    (void) printf("cub cost: %d\n", CURRENT_SCREEN->_cub_cost);
+	    (void) printf("cuf cost: %d\n", CURRENT_SCREEN->_cuf_cost);
+	    (void) printf("cud cost: %d\n", CURRENT_SCREEN->_cud_cost);
+	    (void) printf("cuu cost: %d\n", CURRENT_SCREEN->_cuu_cost);
+	    (void) printf("hpa cost: %d\n", CURRENT_SCREEN->_hpa_cost);
+	    (void) printf("vpa cost: %d\n", CURRENT_SCREEN->_vpa_cost);
 	} else if (buf[0] == 'x' || buf[0] == 'q')
 	    break;
 	else
diff --git a/ncurses/tty/lib_tstp.c b/ncurses/tty/lib_tstp.c
index 06c8411..8624b76 100644
--- a/ncurses/tty/lib_tstp.c
+++ b/ncurses/tty/lib_tstp.c
@@ -1,5 +1,5 @@
 /****************************************************************************
- * Copyright (c) 1998-2007,2008 Free Software Foundation, Inc.              *
+ * Copyright (c) 1998-2013,2014 Free Software Foundation, Inc.              *
  *                                                                          *
  * Permission is hereby granted, free of charge, to any person obtaining a  *
  * copy of this software and associated documentation files (the            *
@@ -42,11 +42,7 @@
 
 #include <SigAction.h>
 
-#if SVR4_ACTION && !defined(_POSIX_SOURCE)
-#define _POSIX_SOURCE
-#endif
-
-MODULE_ID("$Id: lib_tstp.c,v 1.37 2008/05/03 16:24:56 tom Exp $")
+MODULE_ID("$Id: lib_tstp.c,v 1.48 2014/04/26 18:47:35 juergen Exp $")
 
 #if defined(SIGTSTP) && (HAVE_SIGACTION || HAVE_SIGVEC)
 #define USE_SIGTSTP 1
@@ -59,16 +55,20 @@
 signal_name(int sig)
 {
     switch (sig) {
+#ifdef SIGALRM
     case SIGALRM:
 	return "SIGALRM";
+#endif
 #ifdef SIGCONT
     case SIGCONT:
 	return "SIGCONT";
 #endif
     case SIGINT:
 	return "SIGINT";
+#ifdef SIGQUIT
     case SIGQUIT:
 	return "SIGQUIT";
+#endif
     case SIGTERM:
 	return "SIGTERM";
 #ifdef SIGTSTP
@@ -134,8 +134,9 @@
 
 #if USE_SIGTSTP
 static void
-tstp(int dummy GCC_UNUSED)
+handle_SIGTSTP(int dummy GCC_UNUSED)
 {
+    SCREEN *sp = CURRENT_SCREEN;
     sigset_t mask, omask;
     sigaction_t act, oact;
 
@@ -143,7 +144,8 @@
     int sigttou_blocked;
 #endif
 
-    T(("tstp() called"));
+    _nc_globals.have_sigtstp = 1;
+    T(("handle_SIGTSTP() called"));
 
     /*
      * The user may have changed the prog_mode tty bits, so save them.
@@ -154,11 +156,11 @@
      * parent was stopped before us, and we would likely pick up the
      * settings already modified by the shell.
      */
-    if (SP != 0 && !SP->_endwin)	/* don't do this if we're not in curses */
+    if (sp != 0 && !sp->_endwin)	/* don't do this if we're not in curses */
 #if HAVE_TCGETPGRP
 	if (tcgetpgrp(STDIN_FILENO) == getpgrp())
 #endif
-	    def_prog_mode();
+	    NCURSES_SP_NAME(def_prog_mode) (NCURSES_SP_ARG);
 
     /*
      * Block window change and timer signals.  The latter
@@ -166,7 +168,9 @@
      * to repaint the screen.
      */
     (void) sigemptyset(&mask);
+#ifdef SIGALRM
     (void) sigaddset(&mask, SIGALRM);
+#endif
 #if USE_SIGWINCH
     (void) sigaddset(&mask, SIGWINCH);
 #endif
@@ -185,7 +189,7 @@
      * End window mode, which also resets the terminal state to the
      * original (pre-curses) modes.
      */
-    endwin();
+    NCURSES_SP_NAME(endwin) (NCURSES_SP_ARG);
 
     /* Unblock SIGTSTP. */
     (void) sigemptyset(&mask);
@@ -212,19 +216,19 @@
 
     T(("SIGCONT received"));
     sigaction(SIGTSTP, &oact, NULL);
-    flushinp();
+    NCURSES_SP_NAME(flushinp) (NCURSES_SP_ARG);
 
     /*
      * If the user modified the tty state while suspended, he wants
      * those changes to stick.  So save the new "default" terminal state.
      */
-    def_shell_mode();
+    NCURSES_SP_NAME(def_shell_mode) (NCURSES_SP_ARG);
 
     /*
      * This relies on the fact that doupdate() will restore the
      * program-mode tty state, and issue enter_ca_mode if need be.
      */
-    doupdate();
+    NCURSES_SP_NAME(doupdate) (NCURSES_SP_ARG);
 
     /* Reset the signals. */
     (void) sigprocmask(SIG_SETMASK, &omask, NULL);
@@ -232,16 +236,24 @@
 #endif /* USE_SIGTSTP */
 
 static void
-cleanup(int sig)
+handle_SIGINT(int sig)
 {
+    SCREEN *sp = CURRENT_SCREEN;
+
     /*
-     * Actually, doing any sort of I/O from within an signal handler is
-     * "unsafe".  But we'll _try_ to clean up the screen and terminal
-     * settings on the way out.
+     * Much of this is unsafe from a signal handler.  But we'll _try_ to clean
+     * up the screen and terminal settings on the way out.
+     *
+     * There are at least the following problems:
+     * 1) Walking the SCREEN list is unsafe, since all list management
+     *    is done without any signal blocking.
+     * 2) On systems which have REENTRANT turned on, set_term() uses
+     *    _nc_lock_global() which could deadlock or misbehave in other ways.
+     * 3) endwin() calls all sorts of stuff, many of which use stdio or
+     *    other library functions which are clearly unsafe.
      */
     if (!_nc_globals.cleanup_nested++
-	&& (sig == SIGINT
-	    || sig == SIGQUIT)) {
+	&& (sig == SIGINT || sig == SIGTERM)) {
 #if HAVE_SIGACTION || HAVE_SIGVEC
 	sigaction_t act;
 	sigemptyset(&act.sa_mask);
@@ -255,25 +267,31 @@
 	    SCREEN *scan;
 	    for (each_screen(scan)) {
 		if (scan->_ofp != 0
-		    && isatty(fileno(scan->_ofp))) {
-		    scan->_cleanup = TRUE;
-		    scan->_outch = _nc_outch;
+		    && NC_ISATTY(fileno(scan->_ofp))) {
+		    scan->_outch = NCURSES_SP_NAME(_nc_outch);
 		}
 		set_term(scan);
-		endwin();
-		if (SP)
-		    SP->_endwin = FALSE;	/* in case we have an atexit! */
+		NCURSES_SP_NAME(endwin) (NCURSES_SP_ARG);
+		if (sp)
+		    sp->_endwin = FALSE;	/* in case of reuse */
 	    }
 	}
     }
-    exit(EXIT_FAILURE);
+    _exit(EXIT_FAILURE);
 }
 
 #if USE_SIGWINCH
 static void
-sigwinch(int sig GCC_UNUSED)
+handle_SIGWINCH(int sig GCC_UNUSED)
 {
     _nc_globals.have_sigwinch = 1;
+# if USE_PTHREADS_EINTR
+    if (_nc_globals.read_thread) {
+	if (!pthread_equal(pthread_self(), _nc_globals.read_thread))
+	    pthread_kill(_nc_globals.read_thread, SIGWINCH);
+	_nc_globals.read_thread = 0;
+    }
+# endif
 }
 #endif /* USE_SIGWINCH */
 
@@ -282,7 +300,7 @@
  * handler.
  */
 static int
-CatchIfDefault(int sig, RETSIGTYPE (*handler) (int))
+CatchIfDefault(int sig, void (*handler) (int))
 {
     int result;
 #if HAVE_SIGACTION || HAVE_SIGVEC
@@ -312,7 +330,7 @@
 	result = FALSE;
     }
 #else /* !HAVE_SIGACTION */
-    RETSIGTYPE (*ohandler) (int);
+    void (*ohandler) (int);
 
     ohandler = signal(sig, SIG_IGN);
     if (ohandler == SIG_DFL
@@ -345,7 +363,7 @@
  * the caller later changes its mind, but that doesn't seem correct.
  */
 NCURSES_EXPORT(void)
-_nc_signal_handler(bool enable)
+_nc_signal_handler(int enable)
 {
     T((T_CALLED("_nc_signal_handler(%d)"), enable));
 #if USE_SIGTSTP			/* Xenix 2.x doesn't have SIGTSTP, for example */
@@ -366,7 +384,7 @@
 #ifdef SA_RESTART
 		new_sigaction.sa_flags |= SA_RESTART;
 #endif /* SA_RESTART */
-		new_sigaction.sa_handler = tstp;
+		new_sigaction.sa_handler = handle_SIGTSTP;
 		(void) sigaction(SIGTSTP, &new_sigaction, NULL);
 	    } else {
 		ignore_tstp = TRUE;
@@ -377,10 +395,10 @@
 
     if (!_nc_globals.init_signals) {
 	if (enable) {
-	    CatchIfDefault(SIGINT, cleanup);
-	    CatchIfDefault(SIGTERM, cleanup);
+	    CatchIfDefault(SIGINT, handle_SIGINT);
+	    CatchIfDefault(SIGTERM, handle_SIGINT);
 #if USE_SIGWINCH
-	    CatchIfDefault(SIGWINCH, sigwinch);
+	    CatchIfDefault(SIGWINCH, handle_SIGWINCH);
 #endif
 	    _nc_globals.init_signals = TRUE;
 	}
diff --git a/ncurses/tty/lib_twait.c b/ncurses/tty/lib_twait.c
index 16d12ed..15d07c3 100644
--- a/ncurses/tty/lib_twait.c
+++ b/ncurses/tty/lib_twait.c
@@ -1,5 +1,5 @@
 /****************************************************************************
- * Copyright (c) 1998-2007,2008 Free Software Foundation, Inc.              *
+ * Copyright (c) 1998-2014,2015 Free Software Foundation, Inc.              *
  *                                                                          *
  * Permission is hereby granted, free of charge, to any person obtaining a  *
  * copy of this software and associated documentation files (the            *
@@ -53,6 +53,11 @@
 #include <OS.h>
 #endif
 
+#if USE_KLIBC_KBD
+#define INCL_KBD
+#include <os2.h>
+#endif
+
 #if USE_FUNC_POLL
 # if HAVE_SYS_TIME_H
 #  include <sys/time.h>
@@ -65,13 +70,15 @@
 #  include <sys/select.h>
 # endif
 #endif
-
+#ifdef __MINGW32__
+#  include <sys/time.h>
+#endif
 #undef CUR
 
-MODULE_ID("$Id: lib_twait.c,v 1.59 2008/08/30 20:08:19 tom Exp $")
+MODULE_ID("$Id: lib_twait.c,v 1.70 2015/07/04 21:01:02 tom Exp $")
 
 static long
-_nc_gettime(TimeType * t0, bool first)
+_nc_gettime(TimeType * t0, int first)
 {
     long res;
 
@@ -95,7 +102,7 @@
     if (first) {
 	*t0 = t1;
     }
-    res = (t1 - *t0) * 1000;
+    res = (long) ((t1 - *t0) * 1000);
 #endif
     TR(TRACE_IEVENT, ("%s time: %ld msec", first ? "get" : "elapsed", res));
     return res;
@@ -114,7 +121,7 @@
 	    _nc_event *ev = evl->events[n];
 
 	    if (ev->type == _NC_EVENT_TIMEOUT_MSEC) {
-		event_delay = ev->data.timeout_msec;
+		event_delay = (int) ev->data.timeout_msec;
 		if (event_delay < 0)
 		    event_delay = INT_MAX;	/* FIXME Is this defined? */
 	    }
@@ -124,15 +131,27 @@
 }
 #endif /* NCURSES_WGETCH_EVENTS */
 
+#if (USE_FUNC_POLL || HAVE_SELECT)
+#  define MAYBE_UNUSED
+#else
+#  define MAYBE_UNUSED GCC_UNUSED
+#endif
+
+#if (USE_FUNC_POLL || HAVE_SELECT)
+#  define MAYBE_UNUSED
+#else
+#  define MAYBE_UNUSED GCC_UNUSED
+#endif
+
 /*
  * Wait a specified number of milliseconds, returning nonzero if the timer
  * didn't expire before there is activity on the specified file descriptors.
  * The file-descriptors are specified by the mode:
- *	0 - none (absolute time)
- *	1 - ncurses' normal input-descriptor
- *	2 - mouse descriptor, if any
- *	3 - either input or mouse.
- *
+ *	TW_NONE    0 - none (absolute time)
+ *	TW_INPUT   1 - ncurses' normal input-descriptor
+ *	TW_MOUSE   2 - mouse descriptor, if any
+ *	TW_ANY     3 - either input or mouse.
+ *      TW_EVENT   4 -
  * Experimental:  if NCURSES_WGETCH_EVENTS is defined, (mode & 4) determines
  * whether to pay attention to evl argument.  If set, the smallest of
  * millisecond and of timeout of evl is taken.
@@ -143,16 +162,18 @@
  * descriptors.
  */
 NCURSES_EXPORT(int)
-_nc_timed_wait(SCREEN *sp,
-	       int mode,
+_nc_timed_wait(SCREEN *sp MAYBE_UNUSED,
+	       int mode MAYBE_UNUSED,
 	       int milliseconds,
 	       int *timeleft
 	       EVENTLIST_2nd(_nc_eventlist * evl))
 {
-    int fd;
     int count;
-    int result = 0;
+    int result = TW_NONE;
     TimeType t0;
+#if (USE_FUNC_POLL || HAVE_SELECT)
+    int fd;
+#endif
 
 #ifdef NCURSES_WGETCH_EVENTS
     int timeout_is_event = 0;
@@ -168,13 +189,19 @@
     fd_set set;
 #endif
 
+#if USE_KLIBC_KBD
+    fd_set saved_set;
+    KBDKEYINFO ki;
+    struct timeval tv;
+#endif
+
     long starttime, returntime;
 
     TR(TRACE_IEVENT, ("start twait: %d milliseconds, mode: %d",
 		      milliseconds, mode));
 
 #ifdef NCURSES_WGETCH_EVENTS
-    if (mode & 4) {
+    if (mode & TW_EVENT) {
 	int event_delay = _nc_eventlist_timeout(evl);
 
 	if (event_delay >= 0
@@ -191,9 +218,10 @@
     starttime = _nc_gettime(&t0, TRUE);
 
     count = 0;
+    (void) count;
 
 #ifdef NCURSES_WGETCH_EVENTS
-    if ((mode & 4) && evl)
+    if ((mode & TW_EVENT) && evl)
 	evl->result_flags = 0;
 #endif
 
@@ -201,23 +229,27 @@
     memset(fd_list, 0, sizeof(fd_list));
 
 #ifdef NCURSES_WGETCH_EVENTS
-    if ((mode & 4) && evl)
-	fds = typeMalloc(struct pollfd, MIN_FDS + evl->count);
+    if ((mode & TW_EVENT) && evl) {
+	if (fds == fd_list)
+	    fds = typeMalloc(struct pollfd, MIN_FDS + evl->count);
+	if (fds == 0)
+	    return TW_NONE;
+    }
 #endif
 
-    if (mode & 1) {
+    if (mode & TW_INPUT) {
 	fds[count].fd = sp->_ifd;
 	fds[count].events = POLLIN;
 	count++;
     }
-    if ((mode & 2)
+    if ((mode & TW_MOUSE)
 	&& (fd = sp->_mouse_fd) >= 0) {
 	fds[count].fd = fd;
 	fds[count].events = POLLIN;
 	count++;
     }
 #ifdef NCURSES_WGETCH_EVENTS
-    if ((mode & 4) && evl) {
+    if ((mode & TW_EVENT) && evl) {
 	for (n = 0; n < evl->count; ++n) {
 	    _nc_event *ev = evl->events[n];
 
@@ -231,10 +263,10 @@
     }
 #endif
 
-    result = poll(fds, (unsigned) count, milliseconds);
+    result = poll(fds, (size_t) count, milliseconds);
 
 #ifdef NCURSES_WGETCH_EVENTS
-    if ((mode & 4) && evl) {
+    if ((mode & TW_EVENT) && evl) {
 	int c;
 
 	if (!result)
@@ -258,10 +290,6 @@
 	    }
 	}
     }
-
-    if (fds != fd_list)
-	free((char *) fds);
-
 #endif
 
 #elif defined(__BEOS__)
@@ -276,8 +304,8 @@
      *
      * FIXME: this assumes mode&1 if milliseconds < 0 (see lib_getch.c).
      */
-    result = 0;
-    if (mode & 1) {
+    result = TW_NONE;
+    if (mode & TW_INPUT) {
 	int step = (milliseconds < 0) ? 0 : 5000;
 	bigtime_t d;
 	bigtime_t useconds = milliseconds * 1000;
@@ -313,17 +341,19 @@
      */
     FD_ZERO(&set);
 
-    if (mode & 1) {
+#if !USE_KLIBC_KBD
+    if (mode & TW_INPUT) {
 	FD_SET(sp->_ifd, &set);
 	count = sp->_ifd + 1;
     }
-    if ((mode & 2)
+#endif
+    if ((mode & TW_MOUSE)
 	&& (fd = sp->_mouse_fd) >= 0) {
 	FD_SET(fd, &set);
 	count = max(fd, count) + 1;
     }
 #ifdef NCURSES_WGETCH_EVENTS
-    if ((mode & 4) && evl) {
+    if ((mode & TW_EVENT) && evl) {
 	for (n = 0; n < evl->count; ++n) {
 	    _nc_event *ev = evl->events[n];
 
@@ -336,6 +366,31 @@
     }
 #endif
 
+#if USE_KLIBC_KBD
+    for (saved_set = set;; set = saved_set) {
+	if ((mode & TW_INPUT)
+	    && (sp->_extended_key
+		|| (KbdPeek(&ki, 0) == 0
+		    && (ki.fbStatus & KBDTRF_FINAL_CHAR_IN)))) {
+	    FD_ZERO(&set);
+	    FD_SET(sp->_ifd, &set);
+	    result = 1;
+	    break;
+	}
+
+	tv.tv_sec = 0;
+	tv.tv_usec = (milliseconds == 0) ? 0 : (10 * 1000);
+
+	if ((result = select(count, &set, NULL, NULL, &tv)) != 0)
+	    break;
+
+	/* Time out ? */
+	if (milliseconds >= 0 && _nc_gettime(&t0, FALSE) >= milliseconds) {
+	    result = 0;
+	    break;
+	}
+    }
+#else
     if (milliseconds >= 0) {
 	struct timeval ntimeout;
 	ntimeout.tv_sec = milliseconds / 1000;
@@ -344,9 +399,10 @@
     } else {
 	result = select(count, &set, NULL, NULL, NULL);
     }
+#endif
 
 #ifdef NCURSES_WGETCH_EVENTS
-    if ((mode & 4) && evl) {
+    if ((mode & TW_EVENT) && evl) {
 	evl->result_flags = 0;
 	for (n = 0; n < evl->count; ++n) {
 	    _nc_event *ev = evl->events[n];
@@ -370,7 +426,7 @@
     returntime = _nc_gettime(&t0, FALSE);
 
     if (milliseconds >= 0)
-	milliseconds -= (returntime - starttime);
+	milliseconds -= (int) (returntime - starttime);
 
 #ifdef NCURSES_WGETCH_EVENTS
     if (evl) {
@@ -428,22 +484,29 @@
 		}
 	    }
 #elif defined(__BEOS__)
-	    result = 1;		/* redundant, but simple */
+	    result = TW_INPUT;	/* redundant, but simple */
 #elif HAVE_SELECT
-	    if ((mode & 2)
+	    if ((mode & TW_MOUSE)
 		&& (fd = sp->_mouse_fd) >= 0
 		&& FD_ISSET(fd, &set))
-		result |= 2;
-	    if ((mode & 1)
+		result |= TW_MOUSE;
+	    if ((mode & TW_INPUT)
 		&& FD_ISSET(sp->_ifd, &set))
-		result |= 1;
+		result |= TW_INPUT;
 #endif
 	} else
 	    result = 0;
     }
 #ifdef NCURSES_WGETCH_EVENTS
-    if ((mode & 4) && evl && evl->result_flags)
-	result |= 4;
+    if ((mode & TW_EVENT) && evl && evl->result_flags)
+	result |= TW_EVENT;
+#endif
+
+#if USE_FUNC_POLL
+#ifdef NCURSES_WGETCH_EVENTS
+    if (fds != fd_list)
+	free((char *) fds);
+#endif
 #endif
 
     return (result);
diff --git a/ncurses/tty/lib_vidattr.c b/ncurses/tty/lib_vidattr.c
index ac2a74f..184d9b9 100644
--- a/ncurses/tty/lib_vidattr.c
+++ b/ncurses/tty/lib_vidattr.c
@@ -1,5 +1,5 @@
 /****************************************************************************
- * Copyright (c) 1998-2006,2007 Free Software Foundation, Inc.              *
+ * Copyright (c) 1998-2013,2014 Free Software Foundation, Inc.              *
  *                                                                          *
  * Permission is hereby granted, free of charge, to any person obtaining a  *
  * copy of this software and associated documentation files (the            *
@@ -29,7 +29,8 @@
 /****************************************************************************
  *  Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995               *
  *     and: Eric S. Raymond <esr@snark.thyrsus.com>                         *
- *     and: Thomas E. Dickey                        1996 on                 *
+ *     and: Thomas E. Dickey                        1996-on                 *
+ *     and: Juergen Pfeifer                         2009                    *
  ****************************************************************************/
 
 /*
@@ -63,55 +64,69 @@
  */
 
 #include <curses.priv.h>
-#include <term.h>
 
-MODULE_ID("$Id: lib_vidattr.c,v 1.49 2007/06/30 21:58:04 tom Exp $")
+#ifndef CUR
+#define CUR SP_TERMTYPE
+#endif
 
-#define doPut(mode) TPUTS_TRACE(#mode); tputs(mode, 1, outc)
+MODULE_ID("$Id: lib_vidattr.c,v 1.71 2014/09/04 22:01:27 tom Exp $")
 
-#define TurnOn(mask,mode) \
+#define doPut(mode) \
+	TPUTS_TRACE(#mode); \
+	NCURSES_SP_NAME(tputs) (NCURSES_SP_ARGx mode, 1, outc)
+
+#define TurnOn(mask, mode) \
 	if ((turn_on & mask) && mode) { doPut(mode); }
 
-#define TurnOff(mask,mode) \
+#define TurnOff(mask, mode) \
 	if ((turn_off & mask) && mode) { doPut(mode); turn_off &= ~mask; }
 
 	/* if there is no current screen, assume we *can* do color */
-#define SetColorsIf(why,old_attr) \
+#define SetColorsIf(why, old_attr) \
 	if (can_color && (why)) { \
-		int old_pair = PAIR_NUMBER(old_attr); \
+		int old_pair = PairNumber(old_attr); \
 		TR(TRACE_ATTRS, ("old pair = %d -- new pair = %d", old_pair, pair)); \
 		if ((pair != old_pair) \
 		 || (fix_pair0 && (pair == 0)) \
 		 || (reverse ^ ((old_attr & A_REVERSE) != 0))) { \
-			_nc_do_color(old_pair, pair, reverse, outc); \
+		     NCURSES_SP_NAME(_nc_do_color) (NCURSES_SP_ARGx \
+				     (short) old_pair, \
+				     (short) pair, \
+				     reverse, outc); \
 		} \
 	}
 
 #define PreviousAttr _nc_prescreen.previous_attr
 
 NCURSES_EXPORT(int)
-vidputs(chtype newmode, int (*outc) (int))
+NCURSES_SP_NAME(vidputs) (NCURSES_SP_DCLx
+			  chtype newmode,
+			  NCURSES_SP_OUTC outc)
 {
     attr_t turn_on, turn_off;
     int pair;
     bool reverse = FALSE;
-    bool can_color = (SP == 0 || SP->_coloron);
+    bool can_color = (SP_PARM == 0 || SP_PARM->_coloron);
 #if NCURSES_EXT_FUNCS
-    bool fix_pair0 = (SP != 0 && SP->_coloron && !SP->_default_color);
+    bool fix_pair0 = (SP_PARM != 0 && SP_PARM->_coloron && !SP_PARM->_default_color);
 #else
 #define fix_pair0 FALSE
 #endif
 
     newmode &= A_ATTRIBUTES;
-    T((T_CALLED("vidputs(%s)"), _traceattr(newmode)));
+
+    T((T_CALLED("vidputs(%p,%s)"), (void *) SP_PARM, _traceattr(newmode)));
+
+    if (!IsTermInfo(SP_PARM))
+	returnCode(ERR);
 
     /* this allows us to go on whether or not newterm() has been called */
-    if (SP)
-	PreviousAttr = AttrOf(SCREEN_ATTRS(SP));
+    if (SP_PARM)
+	PreviousAttr = AttrOf(SCREEN_ATTRS(SP_PARM));
 
     TR(TRACE_ATTRS, ("previous attribute was %s", _traceattr(PreviousAttr)));
 
-    if ((SP != 0)
+    if ((SP_PARM != 0)
 	&& (magic_cookie_glitch > 0)) {
 #if USE_XMC_SUPPORT
 	static const chtype table[] =
@@ -124,6 +139,9 @@
 	    A_BOLD,
 	    A_INVIS,
 	    A_PROTECT,
+#if USE_ITALIC
+	    A_ITALIC,
+#endif
 	};
 	unsigned n;
 	int used = 0;
@@ -135,7 +153,7 @@
 	 * the terminfo max_attributes value.
 	 */
 	for (n = 0; n < SIZEOF(table); ++n) {
-	    if ((table[n] & SP->_ok_attributes) == 0) {
+	    if ((table[n] & SP_PARM->_ok_attributes) == 0) {
 		newmode &= ~table[n];
 	    } else if ((table[n] & newmode) != 0) {
 		if (used++ >= limit) {
@@ -148,7 +166,7 @@
 	    }
 	}
 #else
-	newmode &= ~(SP->_xmc_suppress);
+	newmode &= ~(SP_PARM->_xmc_suppress);
 #endif
 	TR(TRACE_ATTRS, ("suppressed attribute is %s", _traceattr(newmode)));
     }
@@ -172,7 +190,7 @@
 	 * A_ALTCHARSET (256) down 2 to line up.  We use the NCURSES_BITS
 	 * macro so this will work properly for the wide-character layout.
 	 */
-	unsigned value = no_color_video;
+	unsigned value = (unsigned) no_color_video;
 	attr_t mask = NCURSES_BITS((value & 63)
 				   | ((value & 192) << 1)
 				   | ((value & 256) >> 2), 8);
@@ -188,14 +206,14 @@
     if (newmode == PreviousAttr)
 	returnCode(OK);
 
-    pair = PAIR_NUMBER(newmode);
+    pair = PairNumber(newmode);
 
     if (reverse) {
 	newmode &= ~A_REVERSE;
     }
 
     turn_off = (~newmode & PreviousAttr) & ALL_BUT_COLOR;
-    turn_on = (newmode & ~PreviousAttr) & ALL_BUT_COLOR;
+    turn_on = (newmode & ~(PreviousAttr & TPARM_ATTR)) & ALL_BUT_COLOR;
 
     SetColorsIf(((pair == 0) && !fix_pair0), PreviousAttr);
 
@@ -208,12 +226,17 @@
 	    if (exit_attribute_mode) {
 		doPut(exit_attribute_mode);
 	    } else {
-		if (!SP || SP->_use_rmul) {
+		if (!SP_PARM || SP_PARM->_use_rmul) {
 		    TurnOff(A_UNDERLINE, exit_underline_mode);
 		}
-		if (!SP || SP->_use_rmso) {
+		if (!SP_PARM || SP_PARM->_use_rmso) {
 		    TurnOff(A_STANDOUT, exit_standout_mode);
 		}
+#if USE_ITALIC
+		if (!SP_PARM || SP_PARM->_use_ritm) {
+		    TurnOff(A_ITALIC, exit_italics_mode);
+		}
+#endif
 	    }
 	    PreviousAttr &= ALL_BUT_COLOR;
 	}
@@ -222,18 +245,29 @@
     } else if (set_attributes) {
 	if (turn_on || turn_off) {
 	    TPUTS_TRACE("set_attributes");
-	    tputs(tparm(set_attributes,
-			(newmode & A_STANDOUT) != 0,
-			(newmode & A_UNDERLINE) != 0,
-			(newmode & A_REVERSE) != 0,
-			(newmode & A_BLINK) != 0,
-			(newmode & A_DIM) != 0,
-			(newmode & A_BOLD) != 0,
-			(newmode & A_INVIS) != 0,
-			(newmode & A_PROTECT) != 0,
-			(newmode & A_ALTCHARSET) != 0), 1, outc);
+	    NCURSES_SP_NAME(tputs) (NCURSES_SP_ARGx
+				    tparm(set_attributes,
+					  (newmode & A_STANDOUT) != 0,
+					  (newmode & A_UNDERLINE) != 0,
+					  (newmode & A_REVERSE) != 0,
+					  (newmode & A_BLINK) != 0,
+					  (newmode & A_DIM) != 0,
+					  (newmode & A_BOLD) != 0,
+					  (newmode & A_INVIS) != 0,
+					  (newmode & A_PROTECT) != 0,
+					  (newmode & A_ALTCHARSET) != 0),
+				    1, outc);
 	    PreviousAttr &= ALL_BUT_COLOR;
 	}
+#if USE_ITALIC
+	if (!SP_PARM || SP_PARM->_use_ritm) {
+	    if (turn_on & A_ITALIC) {
+		TurnOn(A_ITALIC, enter_italics_mode);
+	    } else if (turn_off & A_ITALIC) {
+		TurnOff(A_ITALIC, exit_italics_mode);
+	    }
+	}
+#endif
 	SetColorsIf((pair != 0) || fix_pair0, PreviousAttr);
     } else {
 
@@ -241,14 +275,18 @@
 
 	TurnOff(A_ALTCHARSET, exit_alt_charset_mode);
 
-	if (!SP || SP->_use_rmul) {
+	if (!SP_PARM || SP_PARM->_use_rmul) {
 	    TurnOff(A_UNDERLINE, exit_underline_mode);
 	}
 
-	if (!SP || SP->_use_rmso) {
+	if (!SP_PARM || SP_PARM->_use_rmso) {
 	    TurnOff(A_STANDOUT, exit_standout_mode);
 	}
-
+#if USE_ITALIC
+	if (!SP_PARM || SP_PARM->_use_ritm) {
+	    TurnOff(A_ITALIC, exit_italics_mode);
+	}
+#endif
 	if (turn_off && exit_attribute_mode) {
 	    doPut(exit_attribute_mode);
 	    turn_on |= (newmode & ALL_BUT_COLOR);
@@ -267,6 +305,9 @@
 	TurnOn(A_PROTECT,	enter_protected_mode);
 	TurnOn(A_INVIS,		enter_secure_mode);
 	TurnOn(A_UNDERLINE,	enter_underline_mode);
+#if USE_ITALIC
+	TurnOn(A_ITALIC,	enter_italics_mode);
+#endif
 #if USE_WIDEC_SUPPORT
 	TurnOn(A_HORIZONTAL,	enter_horizontal_hl_mode);
 	TurnOn(A_LEFT,		enter_left_hl_mode);
@@ -282,57 +323,98 @@
     if (reverse)
 	newmode |= A_REVERSE;
 
-    if (SP)
-	SetAttr(SCREEN_ATTRS(SP), newmode);
+    if (SP_PARM)
+	SetAttr(SCREEN_ATTRS(SP_PARM), newmode);
     else
 	PreviousAttr = newmode;
 
     returnCode(OK);
 }
 
+#if NCURSES_SP_FUNCS
+NCURSES_EXPORT(int)
+vidputs(chtype newmode, NCURSES_OUTC outc)
+{
+    SetSafeOutcWrapper(outc);
+    return NCURSES_SP_NAME(vidputs) (CURRENT_SCREEN,
+				     newmode,
+				     _nc_outc_wrapper);
+}
+#endif
+
+NCURSES_EXPORT(int)
+NCURSES_SP_NAME(vidattr) (NCURSES_SP_DCLx chtype newmode)
+{
+    T((T_CALLED("vidattr(%p,%s)"), (void *) SP_PARM, _traceattr(newmode)));
+    returnCode(NCURSES_SP_NAME(vidputs) (NCURSES_SP_ARGx
+					 newmode,
+					 NCURSES_SP_NAME(_nc_putchar)));
+}
+
+#if NCURSES_SP_FUNCS
 NCURSES_EXPORT(int)
 vidattr(chtype newmode)
 {
-    T((T_CALLED("vidattr(%s)"), _traceattr(newmode)));
-
-    returnCode(vidputs(newmode, _nc_outch));
+    return NCURSES_SP_NAME(vidattr) (CURRENT_SCREEN, newmode);
 }
+#endif
 
 NCURSES_EXPORT(chtype)
-termattrs(void)
+NCURSES_SP_NAME(termattrs) (NCURSES_SP_DCL0)
 {
     chtype attrs = A_NORMAL;
 
-    T((T_CALLED("termattrs()")));
-    if (enter_alt_charset_mode)
-	attrs |= A_ALTCHARSET;
+    T((T_CALLED("termattrs(%p)"), (void *) SP_PARM));
 
-    if (enter_blink_mode)
-	attrs |= A_BLINK;
+    if (HasTerminal(SP_PARM)) {
+#ifdef USE_TERM_DRIVER
+	attrs = CallDriver(SP_PARM, td_conattr);
+#else /* ! USE_TERM_DRIVER */
 
-    if (enter_bold_mode)
-	attrs |= A_BOLD;
+	if (enter_alt_charset_mode)
+	    attrs |= A_ALTCHARSET;
 
-    if (enter_dim_mode)
-	attrs |= A_DIM;
+	if (enter_blink_mode)
+	    attrs |= A_BLINK;
 
-    if (enter_reverse_mode)
-	attrs |= A_REVERSE;
+	if (enter_bold_mode)
+	    attrs |= A_BOLD;
 
-    if (enter_standout_mode)
-	attrs |= A_STANDOUT;
+	if (enter_dim_mode)
+	    attrs |= A_DIM;
 
-    if (enter_protected_mode)
-	attrs |= A_PROTECT;
+	if (enter_reverse_mode)
+	    attrs |= A_REVERSE;
 
-    if (enter_secure_mode)
-	attrs |= A_INVIS;
+	if (enter_standout_mode)
+	    attrs |= A_STANDOUT;
 
-    if (enter_underline_mode)
-	attrs |= A_UNDERLINE;
+	if (enter_protected_mode)
+	    attrs |= A_PROTECT;
 
-    if (SP->_coloron)
-	attrs |= A_COLOR;
+	if (enter_secure_mode)
+	    attrs |= A_INVIS;
 
-    returnChar(attrs);
+	if (enter_underline_mode)
+	    attrs |= A_UNDERLINE;
+
+	if (SP_PARM->_coloron)
+	    attrs |= A_COLOR;
+
+#if USE_ITALIC
+	if (enter_italics_mode)
+	    attrs |= A_ITALIC;
+#endif
+
+#endif /* USE_TERM_DRIVER */
+    }
+    returnChtype(attrs);
 }
+
+#if NCURSES_SP_FUNCS
+NCURSES_EXPORT(chtype)
+termattrs(void)
+{
+    return NCURSES_SP_NAME(termattrs) (CURRENT_SCREEN);
+}
+#endif
diff --git a/ncurses/tty/tty_display.h b/ncurses/tty/tty_display.h
deleted file mode 100644
index 4c45a08..0000000
--- a/ncurses/tty/tty_display.h
+++ /dev/null
@@ -1,140 +0,0 @@
-/****************************************************************************
- * Copyright (c) 1998-2003,2004 Free Software Foundation, Inc.              *
- *                                                                          *
- * 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, distribute with modifications, 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 COPYRIGHT HOLDERS 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.                                                           *
- ************************************************************************** */
-
-#ifndef TTY_DISPLAY_H
-#define TTY_DISPLAY_H 1
-
-/*
- * $Id: tty_display.h,v 1.6 2005/01/01 23:41:12 tom Exp $
- */
-extern NCURSES_EXPORT(bool) _nc_tty_beep (void);
-extern NCURSES_EXPORT(bool) _nc_tty_check_resize (void);
-extern NCURSES_EXPORT(bool) _nc_tty_cursor (int);
-extern NCURSES_EXPORT(bool) _nc_tty_flash (void);
-extern NCURSES_EXPORT(bool) _nc_tty_init_color (int,int,int,int);
-extern NCURSES_EXPORT(bool) _nc_tty_init_pair (int,int,int);
-extern NCURSES_EXPORT(bool) _nc_tty_slk_hide (bool);
-extern NCURSES_EXPORT(bool) _nc_tty_slk_update (int,const char *);
-extern NCURSES_EXPORT(bool) _nc_tty_start_color (void);
-extern NCURSES_EXPORT(void) _nc_tty_display_resume (void);
-extern NCURSES_EXPORT(void) _nc_tty_display_suspend (void);
-extern NCURSES_EXPORT(void) _nc_tty_dispose (void);	/* frees SP->_term */
-extern NCURSES_EXPORT(void) _nc_tty_switch_to (void);
-extern NCURSES_EXPORT(void) _nc_tty_update (void);
-
-struct tty_display_data {
-	int             _fifohold;      /* set if breakout marked           */
-	unsigned long   _current_attr;  /* terminal attribute current set   */
-	int             _cursrow;       /* physical cursor row (-1=unknown) */
-	int             _curscol;       /* physical cursor column           */
-
-	/* cursor movement costs; units are 10ths of milliseconds */
-	int             _char_padding;  /* cost of character put            */
-	int             _cr_cost;       /* cost of (carriage_return)        */
-	int             _cup_cost;      /* cost of (cursor_address)         */
-	int             _home_cost;     /* cost of (cursor_home)            */
-	int             _ll_cost;       /* cost of (cursor_to_ll)           */
-#if USE_HARD_TABS
-	int             _ht_cost;       /* cost of (tab)                    */
-	int             _cbt_cost;      /* cost of (backtab)                */
-#endif /* USE_HARD_TABS */
-	int             _cub1_cost;     /* cost of (cursor_left)            */
-	int             _cuf1_cost;     /* cost of (cursor_right)           */
-	int             _cud1_cost;     /* cost of (cursor_down)            */
-	int             _cuu1_cost;     /* cost of (cursor_up)              */
-	int             _cub_cost;      /* cost of (parm_cursor_left)       */
-	int             _cuf_cost;      /* cost of (parm_cursor_right)      */
-	int             _cud_cost;      /* cost of (parm_cursor_down)       */
-	int             _cuu_cost;      /* cost of (parm_cursor_up)         */
-	int             _hpa_cost;      /* cost of (column_address)         */
-	int             _vpa_cost;      /* cost of (row_address)            */
-	/* used in lib_doupdate.c, must be chars */
-	int             _ed_cost;       /* cost of (clr_eos)                */
-	int             _el_cost;       /* cost of (clr_eol)                */
-	int             _el1_cost;      /* cost of (clr_bol)                */
-	int             _dch1_cost;     /* cost of (delete_character)       */
-	int             _ich1_cost;     /* cost of (insert_character)       */
-	int             _dch_cost;      /* cost of (parm_dch)               */
-	int             _ich_cost;      /* cost of (parm_ich)               */
-	int             _ech_cost;      /* cost of (erase_chars)            */
-	int             _rep_cost;      /* cost of (repeat_char)            */
-	int             _hpa_ch_cost;   /* cost of (column_address)         */
-	int             _cup_ch_cost;   /* cost of (cursor_address)         */
-	int             _smir_cost;	/* cost of (enter_insert_mode)      */
-	int             _rmir_cost;	/* cost of (exit_insert_mode)       */
-	int             _ip_cost;       /* cost of (insert_padding)         */
-	/* used in lib_mvcur.c */
-	char *          _address_cursor;
-	int             _carriage_return_length;
-	int             _cursor_home_length;
-	int             _cursor_to_ll_length;
-
-	chtype          _xmc_suppress;  /* attributes to suppress if xmc     */
-	chtype          _xmc_triggers;  /* attributes to process if xmc      */
-
-	bool            _sig_winch;
-};
-
-
-#define DelCharCost(count) \
-		((parm_dch != 0) \
-		? D->_dch_cost \
-		: ((delete_character != 0) \
-			? (D->_dch1_cost * count) \
-			: INFINITY))
-
-#define InsCharCost(count) \
-		((parm_ich != 0) \
-		? D->_ich_cost \
-		: ((enter_insert_mode && exit_insert_mode) \
-		  ? D->_smir_cost + D->_rmir_cost + (D->_ip_cost * count) \
-		  : ((insert_character != 0) \
-		    ? ((D->_ich1_cost + D->_ip_cost) * count) \
-		    : INFINITY)))
-
-#if USE_XMC_SUPPORT
-#define UpdateAttrs(c)	if (!SameAttrOf(D->_current_attr, AttrOf(c))) { \
-				attr_t chg = D->_current_attr; \
-				vidattr(AttrOf(c)); \
-				if (magic_cookie_glitch > 0 \
-				 && XMC_CHANGES((chg ^ D->_current_attr))) { \
-					T(("%s @%d before glitch %d,%d", \
-						__FILE__, __LINE__, \
-						D->_cursrow, \
-						D->_curscol)); \
-					_nc_do_xmc_glitch(chg); \
-				} \
-			}
-#else
-#define UpdateAttrs(c)	if (!SameAttrOf(D->_current_attr, AttrOf(c))) \
-				vidattr(AttrOf(c));
-#endif
-
-#define XMC_CHANGES(c) ((c) & D->_xmc_suppress)
-
-#endif /* TTY_DISPLAY_H */
diff --git a/ncurses/tty/tty_input.h b/ncurses/tty/tty_input.h
deleted file mode 100644
index e520793..0000000
--- a/ncurses/tty/tty_input.h
+++ /dev/null
@@ -1,61 +0,0 @@
-/****************************************************************************
- * Copyright (c) 1998,2000 Free Software Foundation, Inc.                   *
- *                                                                          *
- * 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, distribute with modifications, 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 COPYRIGHT HOLDERS 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.                                                           *
- ****************************************************************************/
-
-/*
- * $Id: tty_input.h,v 1.2 2000/12/10 02:26:51 tom Exp $
- */
-
-#ifndef TTY_INPUT_H
-#define TTY_INPUT_H 1
-
-extern NCURSES_EXPORT(bool) _nc_tty_mouse_mask (mmask_t);
-extern NCURSES_EXPORT(bool) _nc_tty_pending (void);
-extern NCURSES_EXPORT(int)  _nc_tty_next_event (int);
-extern NCURSES_EXPORT(void) _nc_tty_flags_changed (void);
-extern NCURSES_EXPORT(void) _nc_tty_flush (void);
-extern NCURSES_EXPORT(void) _nc_tty_input_resume (void);
-extern NCURSES_EXPORT(void) _nc_tty_input_suspend (void);
-
-struct tty_input_data {
-	int             _ifd;           /* input file ptr for screen        */
-	int             _keypad_xmit;   /* current terminal state           */
-	int             _meta_on;       /* current terminal state           */
-
-	/*
-	 * These are the data that support the mouse interface.
-	 */
-	bool            (*_mouse_event) (SCREEN *);
-	bool            (*_mouse_inline)(SCREEN *);
-	bool            (*_mouse_parse) (int);
-	void            (*_mouse_resume)(SCREEN *);
-	void            (*_mouse_wrap)  (SCREEN *);
-	int             _mouse_fd;      /* file-descriptor, if any */
-	int             mousetype;
-};
-
-#endif /* TTY_INPUT_H */
diff --git a/ncurses/tty/tty_update.c b/ncurses/tty/tty_update.c
index 6a3a0c8..e66f716 100644
--- a/ncurses/tty/tty_update.c
+++ b/ncurses/tty/tty_update.c
@@ -1,5 +1,5 @@
 /****************************************************************************
- * Copyright (c) 1998-2007,2008 Free Software Foundation, Inc.              *
+ * Copyright (c) 1998-2013,2014 Free Software Foundation, Inc.              *
  *                                                                          *
  * Permission is hereby granted, free of charge, to any person obtaining a  *
  * copy of this software and associated documentation files (the            *
@@ -30,6 +30,7 @@
  *  Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995               *
  *     and: Eric S. Raymond <esr@snark.thyrsus.com>                         *
  *     and: Thomas E. Dickey                        1996-on                 *
+ *     and: Juergen Pfeifer                         2009                    *
  ****************************************************************************/
 
 /*-----------------------------------------------------------------
@@ -38,12 +39,16 @@
  *
  * 	The routine doupdate() and its dependents.
  * 	All physical output is concentrated here (except _nc_outch()
-  *	in lib_tputs.c).
+ *	in lib_tputs.c).
  *
  *-----------------------------------------------------------------*/
 
 #include <curses.priv.h>
 
+#ifndef CUR
+#define CUR SP_TERMTYPE
+#endif
+
 #if defined __HAIKU__ && defined __BEOS__
 #undef __BEOS__
 #endif
@@ -76,9 +81,8 @@
 #endif
 
 #include <ctype.h>
-#include <term.h>
 
-MODULE_ID("$Id: tty_update.c,v 1.246 2008/08/30 20:08:19 tom Exp $")
+MODULE_ID("$Id: tty_update.c,v 1.280 2014/08/23 19:25:18 tom Exp $")
 
 /*
  * This define controls the line-breakout optimization.  Every once in a
@@ -91,7 +95,7 @@
  */
 #define CHECK_INTERVAL	5
 
-#define FILL_BCE() (SP->_coloron && !SP->_default_color && !back_color_erase)
+#define FILL_BCE(sp) (sp->_coloron && !sp->_default_color && !back_color_erase)
 
 static const NCURSES_CH_T blankchar = NewChar(BLANK_TEXT);
 static NCURSES_CH_T normal = NewChar(BLANK_TEXT);
@@ -103,13 +107,23 @@
  */
 /* #define POSITION_DEBUG */
 
-static NCURSES_INLINE NCURSES_CH_T ClrBlank(WINDOW *win);
+static NCURSES_INLINE NCURSES_CH_T ClrBlank(NCURSES_SP_DCLx WINDOW *win);
+
+#if NCURSES_SP_FUNCS
+static int ClrBottom(SCREEN *, int total);
+static void ClearScreen(SCREEN *, NCURSES_CH_T blank);
+static void ClrUpdate(SCREEN *);
+static void DelChar(SCREEN *, int count);
+static void InsStr(SCREEN *, NCURSES_CH_T * line, int count);
+static void TransformLine(SCREEN *, int const lineno);
+#else
 static int ClrBottom(int total);
 static void ClearScreen(NCURSES_CH_T blank);
 static void ClrUpdate(void);
 static void DelChar(int count);
 static void InsStr(NCURSES_CH_T * line, int count);
 static void TransformLine(int const lineno);
+#endif
 
 #ifdef POSITION_DEBUG
 /****************************************************************************
@@ -119,7 +133,7 @@
  ****************************************************************************/
 
 static void
-position_check(int expected_y, int expected_x, char *legend)
+position_check(NCURSES_SP_DCLx int expected_y, int expected_x, char *legend)
 /* check to see if the real cursor position matches the virtual */
 {
     char buf[20];
@@ -129,10 +143,9 @@
     if (!_nc_tracing || (expected_y < 0 && expected_x < 0))
 	return;
 
-    _nc_flush();
+    NCURSES_SP_NAME(_nc_flush) (NCURSES_SP_ARG);
     memset(buf, '\0', sizeof(buf));
-    putp("\033[6n");		/* only works on ANSI-compatibles */
-    _nc_flush();
+    NCURSES_PUTP2_FLUSH("cpr", "\033[6n");	/* only works on ANSI-compatibles */
     *(s = buf) = 0;
     do {
 	int ask = sizeof(buf) - 1 - (s - buf);
@@ -152,8 +165,12 @@
 	if (expected_y < 0)
 	    expected_y = y - 1;
 	if (y - 1 != expected_y || x - 1 != expected_x) {
-	    beep();
-	    tputs(tparm("\033[%d;%dH", expected_y + 1, expected_x + 1), 1, _nc_outch);
+	    NCURSES_SP_NAME(beep) (NCURSES_SP_ARG);
+	    NCURSES_SP_NAME(tputs) (NCURSES_SP_ARGx
+				    tparm("\033[%d;%dH",
+					  expected_y + 1,
+					  expected_x + 1),
+				    1, NCURSES_SP_NAME(_nc_outch));
 	    _tracef("position seen (%d, %d) doesn't match expected one (%d, %d) in %s",
 		    y - 1, x - 1, expected_y, expected_x, legend);
 	} else {
@@ -172,29 +189,38 @@
  ****************************************************************************/
 
 static NCURSES_INLINE void
-GoTo(int const row, int const col)
+GoTo(NCURSES_SP_DCLx int const row, int const col)
 {
-    TR(TRACE_MOVE, ("GoTo(%d, %d) from (%d, %d)",
-		    row, col, SP->_cursrow, SP->_curscol));
+    TR(TRACE_MOVE, ("GoTo(%p, %d, %d) from (%d, %d)",
+		    (void *) SP_PARM, row, col, SP_PARM->_cursrow, SP_PARM->_curscol));
 
-    position_check(SP->_cursrow, SP->_curscol, "GoTo");
+    position_check(NCURSES_SP_ARGx
+		   SP_PARM->_cursrow,
+		   SP_PARM->_curscol, "GoTo");
 
-    mvcur(SP->_cursrow, SP->_curscol, row, col);
-    position_check(SP->_cursrow, SP->_curscol, "GoTo2");
+    TINFO_MVCUR(NCURSES_SP_ARGx
+		SP_PARM->_cursrow,
+		SP_PARM->_curscol,
+		row, col);
+    position_check(NCURSES_SP_ARGx
+		   SP_PARM->_cursrow,
+		   SP_PARM->_curscol, "GoTo2");
 }
 
 static NCURSES_INLINE void
-PutAttrChar(CARG_CH_T ch)
+PutAttrChar(NCURSES_SP_DCLx CARG_CH_T ch)
 {
     int chlen = 1;
     NCURSES_CH_T my_ch;
+#if USE_WIDEC_SUPPORT
     PUTC_DATA;
+#endif
     NCURSES_CH_T tilde;
     NCURSES_CH_T attr = CHDEREF(ch);
 
     TR(TRACE_CHARPUT, ("PutAttrChar(%s) at (%d, %d)",
 		       _tracech_t(ch),
-		       SP->_cursrow, SP->_curscol));
+		       SP_PARM->_cursrow, SP_PARM->_curscol));
 #if USE_WIDEC_SUPPORT
     /*
      * If this is not a valid character, there is nothing more to do.
@@ -224,12 +250,12 @@
 	 */
 	if (is8bits(CharOf(CHDEREF(ch)))
 	    && (isprint(CharOf(CHDEREF(ch)))
-		|| (SP->_legacy_coding > 0 && CharOf(CHDEREF(ch)) >= 160)
-		|| (SP->_legacy_coding > 1 && CharOf(CHDEREF(ch)) >= 128)
+		|| (SP_PARM->_legacy_coding > 0 && CharOf(CHDEREF(ch)) >= 160)
+		|| (SP_PARM->_legacy_coding > 1 && CharOf(CHDEREF(ch)) >= 128)
 		|| (AttrOf(attr) & A_ALTCHARSET
 		    && ((CharOfD(ch) < ACS_LEN
-			 && SP->_acs_map != 0
-			 && SP->_acs_map[CharOfD(ch)] != 0)
+			 && SP_PARM->_acs_map != 0
+			 && SP_PARM->_acs_map[CharOfD(ch)] != 0)
 			|| (CharOfD(ch) >= 128))))) {
 	    ;
 	} else {
@@ -241,7 +267,7 @@
 #endif
 
     if ((AttrOf(attr) & A_ALTCHARSET)
-	&& SP->_acs_map != 0
+	&& SP_PARM->_acs_map != 0
 	&& CharOfD(ch) < ACS_LEN) {
 	my_ch = CHDEREF(ch);	/* work around const param */
 #if USE_WIDEC_SUPPORT
@@ -251,8 +277,13 @@
 	 * character, and uses the wide-character mapping when we expect the
 	 * normal one to be broken (by mis-design ;-).
 	 */
-	if (SP->_screen_acs_fix
-	    && SP->_screen_acs_map[CharOf(my_ch)]) {
+	if (SP_PARM->_screen_acs_fix
+	    && SP_PARM->_screen_acs_map[CharOf(my_ch)]) {
+	    RemAttr(attr, A_ALTCHARSET);
+	    my_ch = _nc_wacs[CharOf(my_ch)];
+	} else if (SP_PARM->_screen_unicode
+		   && !SP_PARM->_screen_acs_map[CharOf(my_ch)]
+		   && _nc_wacs[CharOf(my_ch)].chars[0]) {
 	    RemAttr(attr, A_ALTCHARSET);
 	    my_ch = _nc_wacs[CharOf(my_ch)];
 	}
@@ -265,15 +296,14 @@
 	 */
 	if (AttrOf(attr) & A_ALTCHARSET) {
 	    int j = CharOfD(ch);
-	    chtype temp = UChar(SP->_acs_map[j]);
+	    chtype temp = UChar(SP_PARM->_acs_map[j]);
 
-	    if (!(SP->_screen_acs_map[j])) {
-		RemAttr(attr, A_ALTCHARSET);
-		if (temp == 0)
-		    temp = ' ';
-	    }
-	    if (temp != 0)
+	    if (temp != 0) {
 		SetChar(my_ch, temp, AttrOf(attr));
+	    } else {
+		my_ch = CHDEREF(ch);
+		RemAttr(attr, A_ALTCHARSET);
+	    }
 	}
 	ch = CHREF(my_ch);
     }
@@ -282,28 +312,19 @@
 	ch = CHREF(tilde);
     }
 
-    UpdateAttrs(attr);
+    UpdateAttrs(SP_PARM, attr);
+    PUTC(CHDEREF(ch));
 #if !USE_WIDEC_SUPPORT
-    /* FIXME - we do this special case for signal handling, should see how to
-     * make it work for wide characters.
-     */
-    if (SP->_outch != 0) {
-	SP->_outch(UChar(ch));
-    } else
+    COUNT_OUTCHARS(1);
 #endif
-    {
-	PUTC(CHDEREF(ch), SP->_ofp);	/* macro's fastest... */
-	COUNT_OUTCHARS(1);
-    }
-    SP->_curscol += chlen;
+    SP_PARM->_curscol += chlen;
     if (char_padding) {
-	TPUTS_TRACE("char_padding");
-	putp(char_padding);
+	NCURSES_PUTP2("char_padding", char_padding);
     }
 }
 
 static bool
-check_pending(void)
+check_pending(NCURSES_SP_DCL0)
 /* check for pending input */
 {
     bool have_pending = FALSE;
@@ -313,15 +334,15 @@
      * have the refreshing slow down drastically (or stop) if there's an
      * unread character available.
      */
-    if (SP->_fifohold != 0)
+    if (SP_PARM->_fifohold != 0)
 	return FALSE;
 
-    if (SP->_checkfd >= 0) {
+    if (SP_PARM->_checkfd >= 0) {
 #if USE_FUNC_POLL
 	struct pollfd fds[1];
-	fds[0].fd = SP->_checkfd;
+	fds[0].fd = SP_PARM->_checkfd;
 	fds[0].events = POLLIN;
-	if (poll(fds, 1, 0) > 0) {
+	if (poll(fds, (size_t) 1, 0) > 0) {
 	    have_pending = TRUE;
 	}
 #elif defined(__BEOS__)
@@ -347,43 +368,50 @@
 	    ktimeout.tv_usec = 0;
 
 	FD_ZERO(&fdset);
-	FD_SET(SP->_checkfd, &fdset);
-	if (select(SP->_checkfd + 1, &fdset, NULL, NULL, &ktimeout) != 0) {
+	FD_SET(SP_PARM->_checkfd, &fdset);
+	if (select(SP_PARM->_checkfd + 1, &fdset, NULL, NULL, &ktimeout) != 0) {
 	    have_pending = TRUE;
 	}
 #endif
     }
     if (have_pending) {
-	SP->_fifohold = 5;
-	_nc_flush();
+	SP_PARM->_fifohold = 5;
+	NCURSES_SP_NAME(_nc_flush) (NCURSES_SP_ARG);
     }
     return FALSE;
 }
 
 /* put char at lower right corner */
 static void
-PutCharLR(const ARG_CH_T ch)
+PutCharLR(NCURSES_SP_DCLx const ARG_CH_T ch)
 {
     if (!auto_right_margin) {
 	/* we can put the char directly */
-	PutAttrChar(ch);
+	PutAttrChar(NCURSES_SP_ARGx ch);
     } else if (enter_am_mode && exit_am_mode) {
 	/* we can suppress automargin */
-	TPUTS_TRACE("exit_am_mode");
-	putp(exit_am_mode);
+	NCURSES_PUTP2("exit_am_mode", exit_am_mode);
 
-	PutAttrChar(ch);
-	SP->_curscol--;
-	position_check(SP->_cursrow, SP->_curscol, "exit_am_mode");
+	PutAttrChar(NCURSES_SP_ARGx ch);
+	SP_PARM->_curscol--;
+	position_check(NCURSES_SP_ARGx
+		       SP_PARM->_cursrow,
+		       SP_PARM->_curscol,
+		       "exit_am_mode");
 
-	TPUTS_TRACE("enter_am_mode");
-	putp(enter_am_mode);
+	NCURSES_PUTP2("enter_am_mode", enter_am_mode);
     } else if ((enter_insert_mode && exit_insert_mode)
 	       || insert_character || parm_ich) {
-	GoTo(screen_lines - 1, screen_columns - 2);
-	PutAttrChar(ch);
-	GoTo(screen_lines - 1, screen_columns - 2);
-	InsStr(newscr->_line[screen_lines - 1].text + screen_columns - 2, 1);
+	GoTo(NCURSES_SP_ARGx
+	     screen_lines(SP_PARM) - 1,
+	     screen_columns(SP_PARM) - 2);
+	PutAttrChar(NCURSES_SP_ARGx ch);
+	GoTo(NCURSES_SP_ARGx
+	     screen_lines(SP_PARM) - 1,
+	     screen_columns(SP_PARM) - 2);
+	InsStr(NCURSES_SP_ARGx
+	       NewScreen(SP_PARM)->_line[screen_lines(SP_PARM) - 1].text +
+	       screen_columns(SP_PARM) - 2, 1);
     }
 }
 
@@ -391,7 +419,7 @@
  * Wrap the cursor position, i.e., advance to the beginning of the next line.
  */
 static void
-wrap_cursor(void)
+wrap_cursor(NCURSES_SP_DCL0)
 {
     if (eat_newline_glitch) {
 	/*
@@ -407,40 +435,47 @@
 	 * it's safe to just tell the code that the cursor is in hyperspace and
 	 * let the next mvcur() call straighten things out.
 	 */
-	SP->_curscol = -1;
-	SP->_cursrow = -1;
+	SP_PARM->_curscol = -1;
+	SP_PARM->_cursrow = -1;
     } else if (auto_right_margin) {
-	SP->_curscol = 0;
-	SP->_cursrow++;
+	SP_PARM->_curscol = 0;
+	SP_PARM->_cursrow++;
 	/*
 	 * We've actually moved - but may have to work around problems with
 	 * video attributes not working.
 	 */
-	if (!move_standout_mode && AttrOf(SCREEN_ATTRS(SP))) {
+	if (!move_standout_mode && AttrOf(SCREEN_ATTRS(SP_PARM))) {
 	    TR(TRACE_CHARPUT, ("turning off (%#lx) %s before wrapping",
-			       (unsigned long) AttrOf(SCREEN_ATTRS(SP)),
-			       _traceattr(AttrOf(SCREEN_ATTRS(SP)))));
-	    (void) VIDATTR(A_NORMAL, 0);
+			       (unsigned long) AttrOf(SCREEN_ATTRS(SP_PARM)),
+			       _traceattr(AttrOf(SCREEN_ATTRS(SP_PARM)))));
+	    (void) VIDATTR(SP_PARM, A_NORMAL, 0);
 	}
     } else {
-	SP->_curscol--;
+	SP_PARM->_curscol--;
     }
-    position_check(SP->_cursrow, SP->_curscol, "wrap_cursor");
+    position_check(NCURSES_SP_ARGx
+		   SP_PARM->_cursrow,
+		   SP_PARM->_curscol,
+		   "wrap_cursor");
 }
 
 static NCURSES_INLINE void
-PutChar(const ARG_CH_T ch)
+PutChar(NCURSES_SP_DCLx const ARG_CH_T ch)
 /* insert character, handling automargin stuff */
 {
-    if (SP->_cursrow == screen_lines - 1 && SP->_curscol == screen_columns - 1)
-	PutCharLR(ch);
-    else
-	PutAttrChar(ch);
+    if (SP_PARM->_cursrow == screen_lines(SP_PARM) - 1 &&
+	SP_PARM->_curscol == screen_columns(SP_PARM) - 1) {
+	PutCharLR(NCURSES_SP_ARGx ch);
+    } else {
+	PutAttrChar(NCURSES_SP_ARGx ch);
+    }
 
-    if (SP->_curscol >= screen_columns)
-	wrap_cursor();
+    if (SP_PARM->_curscol >= screen_columns(SP_PARM))
+	wrap_cursor(NCURSES_SP_ARG);
 
-    position_check(SP->_cursrow, SP->_curscol, "PutChar");
+    position_check(NCURSES_SP_ARGx
+		   SP_PARM->_cursrow,
+		   SP_PARM->_curscol, "PutChar");
 }
 
 /*
@@ -450,21 +485,24 @@
  * or can be output by clearing (A_COLOR in case of bce-terminal) are excluded.
  */
 static NCURSES_INLINE bool
-can_clear_with(ARG_CH_T ch)
+can_clear_with(NCURSES_SP_DCLx ARG_CH_T ch)
 {
-    if (!back_color_erase && SP->_coloron) {
+    if (!back_color_erase && SP_PARM->_coloron) {
 #if NCURSES_EXT_FUNCS
 	int pair;
 
-	if (!SP->_default_color)
+	if (!SP_PARM->_default_color)
 	    return FALSE;
-	if (SP->_default_fg != C_MASK || SP->_default_bg != C_MASK)
+	if (SP_PARM->_default_fg != C_MASK || SP_PARM->_default_bg != C_MASK)
 	    return FALSE;
 	if ((pair = GetPair(CHDEREF(ch))) != 0) {
-	    short fg, bg;
-	    pair_content(pair, &fg, &bg);
-	    if (fg != C_MASK || bg != C_MASK)
+	    NCURSES_COLOR_T fg, bg;
+	    if (NCURSES_SP_NAME(pair_content) (NCURSES_SP_ARGx
+					       (short) pair,
+					       &fg, &bg) == ERR
+		|| (fg != C_MASK || bg != C_MASK)) {
 		return FALSE;
+	    }
 	}
 #else
 	if (AttrOfD(ch) & A_COLOR)
@@ -488,7 +526,7 @@
  * This code is optimized using ech and rep.
  */
 static int
-EmitRange(const NCURSES_CH_T * ntext, int num)
+EmitRange(NCURSES_SP_DCLx const NCURSES_CH_T * ntext, int num)
 {
     int i;
 
@@ -500,13 +538,13 @@
 	    NCURSES_CH_T ntext0;
 
 	    while (num > 1 && !CharEq(ntext[0], ntext[1])) {
-		PutChar(CHREF(ntext[0]));
+		PutChar(NCURSES_SP_ARGx CHREF(ntext[0]));
 		ntext++;
 		num--;
 	    }
 	    ntext0 = ntext[0];
 	    if (num == 1) {
-		PutChar(CHREF(ntext0));
+		PutChar(NCURSES_SP_ARGx CHREF(ntext0));
 		return 0;
 	    }
 	    runcount = 2;
@@ -523,10 +561,10 @@
 	     * which it would be marginally advantageous.
 	     */
 	    if (erase_chars
-		&& runcount > SP->_ech_cost + SP->_cup_ch_cost
-		&& can_clear_with(CHREF(ntext0))) {
-		UpdateAttrs(ntext0);
-		putp(TPARM_1(erase_chars, runcount));
+		&& runcount > SP_PARM->_ech_cost + SP_PARM->_cup_ch_cost
+		&& can_clear_with(NCURSES_SP_ARGx CHREF(ntext0))) {
+		UpdateAttrs(SP_PARM, ntext0);
+		NCURSES_PUTP2("erase_chars", TPARM_1(erase_chars, runcount));
 
 		/*
 		 * If this is the last part of the given interval,
@@ -534,27 +572,34 @@
 		 * last update on the line.
 		 */
 		if (runcount < num) {
-		    GoTo(SP->_cursrow, SP->_curscol + runcount);
+		    GoTo(NCURSES_SP_ARGx
+			 SP_PARM->_cursrow,
+			 SP_PARM->_curscol + runcount);
 		} else {
 		    return 1;	/* cursor stays in the middle */
 		}
-	    } else if (repeat_char && runcount > SP->_rep_cost) {
-		bool wrap_possible = (SP->_curscol + runcount >= screen_columns);
+	    } else if (repeat_char && runcount > SP_PARM->_rep_cost) {
+		bool wrap_possible = (SP_PARM->_curscol + runcount >=
+				      screen_columns(SP_PARM));
 		int rep_count = runcount;
 
 		if (wrap_possible)
 		    rep_count--;
 
-		UpdateAttrs(ntext0);
-		tputs(TPARM_2(repeat_char, CharOf(ntext0), rep_count),
-		      rep_count, _nc_outch);
-		SP->_curscol += rep_count;
+		UpdateAttrs(SP_PARM, ntext0);
+		NCURSES_SP_NAME(tputs) (NCURSES_SP_ARGx
+					TPARM_2(repeat_char,
+						CharOf(ntext0),
+						rep_count),
+					rep_count,
+					NCURSES_SP_NAME(_nc_outch));
+		SP_PARM->_curscol += rep_count;
 
 		if (wrap_possible)
-		    PutChar(CHREF(ntext0));
+		    PutChar(NCURSES_SP_ARGx CHREF(ntext0));
 	    } else {
 		for (i = 0; i < runcount; i++)
-		    PutChar(CHREF(ntext[i]));
+		    PutChar(NCURSES_SP_ARGx CHREF(ntext[i]));
 	    }
 	    ntext += runcount;
 	    num -= runcount;
@@ -563,7 +608,7 @@
     }
 
     for (i = 0; i < num; i++)
-	PutChar(CHREF(ntext[i]));
+	PutChar(NCURSES_SP_ARGx CHREF(ntext[i]));
     return 0;
 }
 
@@ -576,39 +621,46 @@
  * Returns: same as EmitRange
  */
 static int
-PutRange(const NCURSES_CH_T * otext,
+PutRange(NCURSES_SP_DCLx
+	 const NCURSES_CH_T * otext,
 	 const NCURSES_CH_T * ntext,
 	 int row,
 	 int first, int last)
 {
     int i, j, same;
+    int rc;
 
-    TR(TRACE_CHARPUT, ("PutRange(%p, %p, %d, %d, %d)",
-		       otext, ntext, row, first, last));
+    TR(TRACE_CHARPUT, ("PutRange(%p, %p, %p, %d, %d, %d)",
+		       (void *) SP_PARM,
+		       (const void *) otext,
+		       (const void *) ntext,
+		       row, first, last));
 
     if (otext != ntext
-	&& (last - first + 1) > SP->_inline_cost) {
+	&& (last - first + 1) > SP_PARM->_inline_cost) {
 	for (j = first, same = 0; j <= last; j++) {
 	    if (!same && isWidecExt(otext[j]))
 		continue;
 	    if (CharEq(otext[j], ntext[j])) {
 		same++;
 	    } else {
-		if (same > SP->_inline_cost) {
-		    EmitRange(ntext + first, j - same - first);
-		    GoTo(row, first = j);
+		if (same > SP_PARM->_inline_cost) {
+		    EmitRange(NCURSES_SP_ARGx ntext + first, j - same - first);
+		    GoTo(NCURSES_SP_ARGx row, first = j);
 		}
 		same = 0;
 	    }
 	}
-	i = EmitRange(ntext + first, j - same - first);
+	i = EmitRange(NCURSES_SP_ARGx ntext + first, j - same - first);
 	/*
 	 * Always return 1 for the next GoTo() after a PutRange() if we found
 	 * identical characters at end of interval
 	 */
-	return (same == 0 ? i : 1);
+	rc = (same == 0 ? i : 1);
+    } else {
+	rc = EmitRange(NCURSES_SP_ARGx ntext + first, last - first + 1);
     }
-    return EmitRange(ntext + first, last - first + 1);
+    return rc;
 }
 
 /* leave unbracketed here so 'indent' works */
@@ -618,7 +670,7 @@
 		if_USE_SCROLL_HINTS(win->_line[row].oldindex = row)
 
 NCURSES_EXPORT(int)
-doupdate(void)
+TINFO_DOUPDATE(NCURSES_SP_DCL0)
 {
     int i;
     int nonempty;
@@ -626,30 +678,52 @@
     struct tms before, after;
 #endif /* USE_TRACE_TIMES */
 
-    T((T_CALLED("doupdate()")));
+    T((T_CALLED("_nc_tinfo:doupdate(%p)"), (void *) SP_PARM));
 
-    if (curscr == 0
-	|| newscr == 0)
+    if (SP_PARM == 0)
+	returnCode(ERR);
+
+#if !USE_REENTRANT
+    /*
+     * It is "legal" but unlikely that an application could assign a new
+     * value to one of the standard windows.  Check for that possibility
+     * and try to recover.
+     *
+     * We do not allow applications to assign new values in the reentrant
+     * model.
+     */
+#define SyncScreens(internal,exported) \
+	if (internal == 0) internal = exported; \
+	if (internal != exported) exported = internal
+
+    SyncScreens(CurScreen(SP_PARM), curscr);
+    SyncScreens(NewScreen(SP_PARM), newscr);
+    SyncScreens(StdScreen(SP_PARM), stdscr);
+#endif
+
+    if (CurScreen(SP_PARM) == 0
+	|| NewScreen(SP_PARM) == 0
+	|| StdScreen(SP_PARM) == 0)
 	returnCode(ERR);
 
 #ifdef TRACE
     if (USE_TRACEF(TRACE_UPDATE)) {
-	if (curscr->_clear)
+	if (CurScreen(SP_PARM)->_clear)
 	    _tracef("curscr is clear");
 	else
-	    _tracedump("curscr", curscr);
-	_tracedump("newscr", newscr);
+	    _tracedump("curscr", CurScreen(SP_PARM));
+	_tracedump("newscr", NewScreen(SP_PARM));
 	_nc_unlock_global(tracef);
     }
 #endif /* TRACE */
 
     _nc_signal_handler(FALSE);
 
-    if (SP->_fifohold)
-	SP->_fifohold--;
+    if (SP_PARM->_fifohold)
+	SP_PARM->_fifohold--;
 
 #if USE_SIZECHANGE
-    if (SP->_endwin || _nc_handle_sigwinch(SP)) {
+    if (SP_PARM->_endwin || _nc_handle_sigwinch(SP_PARM)) {
 	/*
 	 * This is a transparent extension:  XSI does not address it,
 	 * and applications need not know that ncurses can do it.
@@ -658,20 +732,20 @@
 	 * (this can happen in an xterm, for example), and resize the
 	 * ncurses data structures accordingly.
 	 */
-	_nc_update_screensize(SP);
+	_nc_update_screensize(SP_PARM);
     }
 #endif
 
-    if (SP->_endwin) {
+    if (SP_PARM->_endwin) {
 
 	T(("coming back from shell mode"));
-	reset_prog_mode();
+	NCURSES_SP_NAME(reset_prog_mode) (NCURSES_SP_ARG);
 
-	_nc_mvcur_resume();
-	_nc_screen_resume();
-	SP->_mouse_resume(SP);
+	NCURSES_SP_NAME(_nc_mvcur_resume) (NCURSES_SP_ARG);
+	NCURSES_SP_NAME(_nc_screen_resume) (NCURSES_SP_ARG);
+	SP_PARM->_mouse_resume(SP_PARM);
 
-	SP->_endwin = FALSE;
+	SP_PARM->_endwin = FALSE;
     }
 #if USE_TRACE_TIMES
     /* zero the metering machinery */
@@ -695,11 +769,11 @@
 	int j, k;
 	attr_t rattr = A_NORMAL;
 
-	for (i = 0; i < screen_lines; i++) {
-	    for (j = 0; j < screen_columns; j++) {
+	for (i = 0; i < screen_lines(SP_PARM); i++) {
+	    for (j = 0; j < screen_columns(SP_PARM); j++) {
 		bool failed = FALSE;
-		NCURSES_CH_T *thisline = newscr->_line[i].text;
-		attr_t thisattr = AttrOf(thisline[j]) & SP->_xmc_triggers;
+		NCURSES_CH_T *thisline = NewScreen(SP_PARM)->_line[i].text;
+		attr_t thisattr = AttrOf(thisline[j]) & SP_PARM->_xmc_triggers;
 		attr_t turnon = thisattr & ~rattr;
 
 		/* is an attribute turned on here? */
@@ -717,8 +791,8 @@
 		 * there's enough room to set the attribute before the first
 		 * non-blank in the run.
 		 */
-#define SAFE(a)	(!((a) & SP->_xmc_triggers))
-		if (ISBLANK(thisline[j]) && SAFE(turnon)) {
+#define SAFE(scr,a)	(!((a) & (scr)->_xmc_triggers))
+		if (ISBLANK(thisline[j]) && SAFE(SP_PARM, turnon)) {
 		    RemAttr(thisline[j], turnon);
 		    continue;
 		}
@@ -727,14 +801,14 @@
 		for (k = 1; k <= magic_cookie_glitch; k++) {
 		    if (j - k < 0
 			|| !ISBLANK(thisline[j - k])
-			|| !SAFE(AttrOf(thisline[j - k]))) {
+			|| !SAFE(SP_PARM, AttrOf(thisline[j - k]))) {
 			failed = TRUE;
 			TR(TRACE_ATTRS, ("No room at start in %d,%d%s%s",
 					 i, j - k,
 					 (ISBLANK(thisline[j - k])
 					  ? ""
 					  : ":nonblank"),
-					 (SAFE(AttrOf(thisline[j - k]))
+					 (SAFE(SP_PARM, AttrOf(thisline[j - k]))
 					  ? ""
 					  : ":unsafe")));
 			break;
@@ -745,10 +819,11 @@
 		    int m, n = j;
 
 		    /* find end of span, if it's onscreen */
-		    for (m = i; m < screen_lines; m++) {
-			for (; n < screen_columns; n++) {
-			    attr_t testattr = AttrOf(newscr->_line[m].text[n]);
-			    if ((testattr & SP->_xmc_triggers) == rattr) {
+		    for (m = i; m < screen_lines(SP_PARM); m++) {
+			for (; n < screen_columns(SP_PARM); n++) {
+			    attr_t testattr =
+			    AttrOf(NewScreen(SP_PARM)->_line[m].text[n]);
+			    if ((testattr & SP_PARM->_xmc_triggers) == rattr) {
 				end_onscreen = TRUE;
 				TR(TRACE_ATTRS,
 				   ("Range attributed with %s ends at (%d, %d)",
@@ -764,7 +839,8 @@
 		  foundit:;
 
 		    if (end_onscreen) {
-			NCURSES_CH_T *lastline = newscr->_line[m].text;
+			NCURSES_CH_T *lastline =
+			NewScreen(SP_PARM)->_line[m].text;
 
 			/*
 			 * If there are safely-attributed blanks at the end of
@@ -773,15 +849,15 @@
 			 */
 			while (n >= 0
 			       && ISBLANK(lastline[n])
-			       && SAFE(AttrOf(lastline[n]))) {
+			       && SAFE(SP_PARM, AttrOf(lastline[n]))) {
 			    RemAttr(lastline[n--], turnon);
 			}
 
 			/* check that there's enough room at end of span */
 			for (k = 1; k <= magic_cookie_glitch; k++) {
-			    if (n + k >= screen_columns
+			    if (n + k >= screen_columns(SP_PARM)
 				|| !ISBLANK(lastline[n + k])
-				|| !SAFE(AttrOf(lastline[n + k]))) {
+				|| !SAFE(SP_PARM, AttrOf(lastline[n + k]))) {
 				failed = TRUE;
 				TR(TRACE_ATTRS,
 				   ("No room at end in %d,%d%s%s",
@@ -789,7 +865,7 @@
 				    (ISBLANK(lastline[n + k])
 				     ? ""
 				     : ":nonblank"),
-				    (SAFE(AttrOf(lastline[n + k]))
+				    (SAFE(SP_PARM, AttrOf(lastline[n + k]))
 				     ? ""
 				     : ":unsafe")));
 				break;
@@ -806,12 +882,12 @@
 			_traceattr(turnon), i, j));
 
 		    /* turn off new attributes over span */
-		    for (p = i; p < screen_lines; p++) {
-			for (; q < screen_columns; q++) {
+		    for (p = i; p < screen_lines(SP_PARM); p++) {
+			for (; q < screen_columns(SP_PARM); q++) {
 			    attr_t testattr = AttrOf(newscr->_line[p].text[q]);
-			    if ((testattr & SP->_xmc_triggers) == rattr)
+			    if ((testattr & SP_PARM->_xmc_triggers) == rattr)
 				goto foundend;
-			    RemAttr(newscr->_line[p].text[q], turnon);
+			    RemAttr(NewScreen(SP_PARM)->_line[p].text[q], turnon);
 			}
 			q = 0;
 		    }
@@ -837,7 +913,7 @@
 	/* show altered highlights after magic-cookie check */
 	if (USE_TRACEF(TRACE_UPDATE)) {
 	    _tracef("After magic-cookie check...");
-	    _tracedump("newscr", newscr);
+	    _tracedump("newscr", NewScreen(SP_PARM));
 	    _nc_unlock_global(tracef);
 	}
 #endif /* TRACE */
@@ -845,23 +921,23 @@
 #endif /* USE_XMC_SUPPORT */
 
     nonempty = 0;
-    if (curscr->_clear || newscr->_clear) {	/* force refresh ? */
-	ClrUpdate();
-	curscr->_clear = FALSE;	/* reset flag */
-	newscr->_clear = FALSE;	/* reset flag */
+    if (CurScreen(SP_PARM)->_clear || NewScreen(SP_PARM)->_clear) {	/* force refresh ? */
+	ClrUpdate(NCURSES_SP_ARG);
+	CurScreen(SP_PARM)->_clear = FALSE;	/* reset flag */
+	NewScreen(SP_PARM)->_clear = FALSE;	/* reset flag */
     } else {
 	int changedlines = CHECK_INTERVAL;
 
-	if (check_pending())
+	if (check_pending(NCURSES_SP_ARG))
 	    goto cleanup;
 
-	nonempty = min(screen_lines, newscr->_maxy + 1);
+	nonempty = min(screen_lines(SP_PARM), NewScreen(SP_PARM)->_maxy + 1);
 
-	if (SP->_scrolling) {
-	    _nc_scroll_optimize();
+	if (SP_PARM->_scrolling) {
+	    NCURSES_SP_NAME(_nc_scroll_optimize) (NCURSES_SP_ARG);
 	}
 
-	nonempty = ClrBottom(nonempty);
+	nonempty = ClrBottom(NCURSES_SP_ARGx nonempty);
 
 	TR(TRACE_UPDATE, ("Transforming lines, nonempty %d", nonempty));
 	for (i = 0; i < nonempty; i++) {
@@ -869,7 +945,7 @@
 	     * Here is our line-breakout optimization.
 	     */
 	    if (changedlines == CHECK_INTERVAL) {
-		if (check_pending())
+		if (check_pending(NCURSES_SP_ARG))
 		    goto cleanup;
 		changedlines = 0;
 	    }
@@ -880,35 +956,35 @@
 	     * is normally set by _nc_scroll_window in the
 	     * vertical-movement optimization code,
 	     */
-	    if (newscr->_line[i].firstchar != _NOCHANGE
-		|| curscr->_line[i].firstchar != _NOCHANGE) {
-		TransformLine(i);
+	    if (NewScreen(SP_PARM)->_line[i].firstchar != _NOCHANGE
+		|| CurScreen(SP_PARM)->_line[i].firstchar != _NOCHANGE) {
+		TransformLine(NCURSES_SP_ARGx i);
 		changedlines++;
 	    }
 
 	    /* mark line changed successfully */
-	    if (i <= newscr->_maxy) {
-		MARK_NOCHANGE(newscr, i);
+	    if (i <= NewScreen(SP_PARM)->_maxy) {
+		MARK_NOCHANGE(NewScreen(SP_PARM), i);
 	    }
-	    if (i <= curscr->_maxy) {
-		MARK_NOCHANGE(curscr, i);
+	    if (i <= CurScreen(SP_PARM)->_maxy) {
+		MARK_NOCHANGE(CurScreen(SP_PARM), i);
 	    }
 	}
     }
 
     /* put everything back in sync */
-    for (i = nonempty; i <= newscr->_maxy; i++) {
-	MARK_NOCHANGE(newscr, i);
+    for (i = nonempty; i <= NewScreen(SP_PARM)->_maxy; i++) {
+	MARK_NOCHANGE(NewScreen(SP_PARM), i);
     }
-    for (i = nonempty; i <= curscr->_maxy; i++) {
-	MARK_NOCHANGE(curscr, i);
+    for (i = nonempty; i <= CurScreen(SP_PARM)->_maxy; i++) {
+	MARK_NOCHANGE(CurScreen(SP_PARM), i);
     }
 
-    if (!newscr->_leaveok) {
-	curscr->_curx = newscr->_curx;
-	curscr->_cury = newscr->_cury;
+    if (!NewScreen(SP_PARM)->_leaveok) {
+	CurScreen(SP_PARM)->_curx = NewScreen(SP_PARM)->_curx;
+	CurScreen(SP_PARM)->_cury = NewScreen(SP_PARM)->_cury;
 
-	GoTo(curscr->_cury, curscr->_curx);
+	GoTo(NCURSES_SP_ARGx CurScreen(SP_PARM)->_cury, CurScreen(SP_PARM)->_curx);
     }
 
   cleanup:
@@ -921,10 +997,10 @@
 #if USE_XMC_SUPPORT
     if (magic_cookie_glitch != 0)
 #endif
-	UpdateAttrs(normal);
+	UpdateAttrs(SP_PARM, normal);
 
-    _nc_flush();
-    WINDOW_ATTRS(curscr) = WINDOW_ATTRS(newscr);
+    NCURSES_SP_NAME(_nc_flush) (NCURSES_SP_ARG);
+    WINDOW_ATTRS(CurScreen(SP_PARM)) = WINDOW_ATTRS(NewScreen(SP_PARM));
 
 #if USE_TRACE_TIMES
     (void) times(&after);
@@ -940,6 +1016,14 @@
     returnCode(OK);
 }
 
+#if NCURSES_SP_FUNCS && !defined(USE_TERM_DRIVER)
+NCURSES_EXPORT(int)
+doupdate(void)
+{
+    return TINFO_DOUPDATE(CURRENT_SCREEN);
+}
+#endif
+
 /*
  *	ClrBlank(win)
  *
@@ -951,14 +1035,14 @@
  *	in the wbkgd() call.  Assume 'stdscr' for this case.
  */
 #define BCE_ATTRS (A_NORMAL|A_COLOR)
-#define BCE_BKGD(win) (((win) == curscr ? stdscr : (win))->_nc_bkgd)
+#define BCE_BKGD(sp,win) (((win) == CurScreen(sp) ? StdScreen(sp) : (win))->_nc_bkgd)
 
 static NCURSES_INLINE NCURSES_CH_T
-ClrBlank(WINDOW *win)
+ClrBlank(NCURSES_SP_DCLx WINDOW *win)
 {
     NCURSES_CH_T blank = blankchar;
     if (back_color_erase)
-	AddAttr(blank, (AttrOf(BCE_BKGD(win)) & BCE_ATTRS));
+	AddAttr(blank, (AttrOf(BCE_BKGD(SP_PARM, win)) & BCE_ATTRS));
     return blank;
 }
 
@@ -970,23 +1054,24 @@
 */
 
 static void
-ClrUpdate(void)
+ClrUpdate(NCURSES_SP_DCL0)
 {
-    int i;
-    NCURSES_CH_T blank = ClrBlank(stdscr);
-    int nonempty = min(screen_lines, newscr->_maxy + 1);
-
     TR(TRACE_UPDATE, (T_CALLED("ClrUpdate")));
+    if (0 != SP_PARM) {
+	int i;
+	NCURSES_CH_T blank = ClrBlank(NCURSES_SP_ARGx StdScreen(SP_PARM));
+	int nonempty = min(screen_lines(SP_PARM),
+			   NewScreen(SP_PARM)->_maxy + 1);
 
-    ClearScreen(blank);
+	ClearScreen(NCURSES_SP_ARGx blank);
 
-    TR(TRACE_UPDATE, ("updating screen from scratch"));
+	TR(TRACE_UPDATE, ("updating screen from scratch"));
 
-    nonempty = ClrBottom(nonempty);
+	nonempty = ClrBottom(NCURSES_SP_ARGx nonempty);
 
-    for (i = 0; i < nonempty; i++)
-	TransformLine(i);
-
+	for (i = 0; i < nonempty; i++)
+	    TransformLine(NCURSES_SP_ARGx i);
+    }
     TR(TRACE_UPDATE, (T_RETURN("")));
 }
 
@@ -997,15 +1082,16 @@
 */
 
 static void
-ClrToEOL(NCURSES_CH_T blank, bool needclear)
+ClrToEOL(NCURSES_SP_DCLx NCURSES_CH_T blank, int needclear)
 {
     int j;
 
-    if (curscr != 0
-	&& SP->_cursrow >= 0) {
-	for (j = SP->_curscol; j < screen_columns; j++) {
+    if (CurScreen(SP_PARM) != 0
+	&& SP_PARM->_cursrow >= 0) {
+	for (j = SP_PARM->_curscol; j < screen_columns(SP_PARM); j++) {
 	    if (j >= 0) {
-		NCURSES_CH_T *cp = &(curscr->_line[SP->_cursrow].text[j]);
+		NCURSES_CH_T *cp =
+		&(CurScreen(SP_PARM)->_line[SP_PARM->_cursrow].text[j]);
 
 		if (!CharEq(*cp, blank)) {
 		    *cp = blank;
@@ -1013,19 +1099,16 @@
 		}
 	    }
 	}
-    } else {
-	needclear = TRUE;
     }
 
     if (needclear) {
-	UpdateAttrs(blank);
-	TPUTS_TRACE("clr_eol");
-	if (clr_eol && SP->_el_cost <= (screen_columns - SP->_curscol)) {
-	    putp(clr_eol);
+	UpdateAttrs(SP_PARM, blank);
+	if (clr_eol && SP_PARM->_el_cost <= (screen_columns(SP_PARM) - SP_PARM->_curscol)) {
+	    NCURSES_PUTP2("clr_eol", clr_eol);
 	} else {
-	    int count = (screen_columns - SP->_curscol);
+	    int count = (screen_columns(SP_PARM) - SP_PARM->_curscol);
 	    while (count-- > 0)
-		PutChar(CHREF(blank));
+		PutChar(NCURSES_SP_ARGx CHREF(blank));
 	}
     }
 }
@@ -1037,23 +1120,31 @@
 */
 
 static void
-ClrToEOS(NCURSES_CH_T blank)
+ClrToEOS(NCURSES_SP_DCLx NCURSES_CH_T blank)
 {
     int row, col;
 
-    row = SP->_cursrow;
-    col = SP->_curscol;
+    row = SP_PARM->_cursrow;
+    col = SP_PARM->_curscol;
 
-    UpdateAttrs(blank);
+    if (row < 0)
+	row = 0;
+    if (col < 0)
+	col = 0;
+
+    UpdateAttrs(SP_PARM, blank);
     TPUTS_TRACE("clr_eos");
-    tputs(clr_eos, screen_lines - row, _nc_outch);
+    NCURSES_SP_NAME(tputs) (NCURSES_SP_ARGx
+			    clr_eos,
+			    screen_lines(SP_PARM) - row,
+			    NCURSES_SP_NAME(_nc_outch));
 
-    while (col < screen_columns)
-	curscr->_line[row].text[col++] = blank;
+    while (col < screen_columns(SP_PARM))
+	CurScreen(SP_PARM)->_line[row].text[col++] = blank;
 
-    for (row++; row < screen_lines; row++) {
-	for (col = 0; col < screen_columns; col++)
-	    curscr->_line[row].text[col] = blank;
+    for (row++; row < screen_lines(SP_PARM); row++) {
+	for (col = 0; col < screen_columns(SP_PARM); col++)
+	    CurScreen(SP_PARM)->_line[row].text[col] = blank;
     }
 }
 
@@ -1065,26 +1156,26 @@
  *	screen, checking if each is blank, and one or more are changed.
  */
 static int
-ClrBottom(int total)
+ClrBottom(NCURSES_SP_DCLx int total)
 {
     int row;
     int col;
     int top = total;
-    int last = min(screen_columns, newscr->_maxx + 1);
-    NCURSES_CH_T blank = newscr->_line[total - 1].text[last - 1];
+    int last = min(screen_columns(SP_PARM), NewScreen(SP_PARM)->_maxx + 1);
+    NCURSES_CH_T blank = NewScreen(SP_PARM)->_line[total - 1].text[last - 1];
     bool ok;
 
-    if (clr_eos && can_clear_with(CHREF(blank))) {
+    if (clr_eos && can_clear_with(NCURSES_SP_ARGx CHREF(blank))) {
 
 	for (row = total - 1; row >= 0; row--) {
 	    for (col = 0, ok = TRUE; ok && col < last; col++) {
-		ok = (CharEq(newscr->_line[row].text[col], blank));
+		ok = (CharEq(NewScreen(SP_PARM)->_line[row].text[col], blank));
 	    }
 	    if (!ok)
 		break;
 
 	    for (col = 0; ok && col < last; col++) {
-		ok = (CharEq(curscr->_line[row].text[col], blank));
+		ok = (CharEq(CurScreen(SP_PARM)->_line[row].text[col], blank));
 	    }
 	    if (!ok)
 		top = row;
@@ -1092,11 +1183,11 @@
 
 	/* don't use clr_eos for just one line if clr_eol available */
 	if (top < total) {
-	    GoTo(top, 0);
-	    ClrToEOS(blank);
-	    if (SP->oldhash && SP->newhash) {
-		for (row = top; row < screen_lines; row++)
-		    SP->oldhash[row] = SP->newhash[row];
+	    GoTo(NCURSES_SP_ARGx top, 0);
+	    ClrToEOS(NCURSES_SP_ARGx blank);
+	    if (SP_PARM->oldhash && SP_PARM->newhash) {
+		for (row = top; row < screen_lines(SP_PARM); row++)
+		    SP_PARM->oldhash[row] = SP_PARM->newhash[row];
 	    }
 	}
     }
@@ -1105,22 +1196,22 @@
 
 #if USE_XMC_SUPPORT
 #if USE_WIDEC_SUPPORT
-#define check_xmc_transition(a, b) \
-    ((((a)->attr ^ (b)->attr) & ~((a)->attr) & SP->_xmc_triggers) != 0)
-#define xmc_turn_on(a,b) check_xmc_transition(&(a), &(b))
+#define check_xmc_transition(sp, a, b)					\
+    ((((a)->attr ^ (b)->attr) & ~((a)->attr) & (sp)->_xmc_triggers) != 0)
+#define xmc_turn_on(sp,a,b) check_xmc_transition(sp,&(a), &(b))
 #else
-#define xmc_turn_on(a,b) ((((a)^(b)) & ~(a) & SP->_xmc_triggers) != 0)
+#define xmc_turn_on(sp,a,b) ((((a)^(b)) & ~(a) & (sp)->_xmc_triggers) != 0)
 #endif
 
-#define xmc_new(r,c) newscr->_line[r].text[c]
-#define xmc_turn_off(a,b) xmc_turn_on(b,a)
+#define xmc_new(sp,r,c) NewScreen(sp)->_line[r].text[c]
+#define xmc_turn_off(sp,a,b) xmc_turn_on(sp,b,a)
 #endif /* USE_XMC_SUPPORT */
 
 /*
 **	TransformLine(lineno)
 **
 **	Transform the given line in curscr to the one in newscr, using
-**	Insert/Delete Character if _nc_idcok && has_ic().
+**	Insert/Delete Character if idcok && has_ic().
 **
 **		firstChar = position of first different character in line
 **		oLastChar = position of last different character in old line
@@ -1135,19 +1226,19 @@
 */
 
 static void
-TransformLine(int const lineno)
+TransformLine(NCURSES_SP_DCLx int const lineno)
 {
     int firstChar, oLastChar, nLastChar;
-    NCURSES_CH_T *newLine = newscr->_line[lineno].text;
-    NCURSES_CH_T *oldLine = curscr->_line[lineno].text;
+    NCURSES_CH_T *newLine = NewScreen(SP_PARM)->_line[lineno].text;
+    NCURSES_CH_T *oldLine = CurScreen(SP_PARM)->_line[lineno].text;
     int n;
     bool attrchanged = FALSE;
 
-    TR(TRACE_UPDATE, (T_CALLED("TransformLine(%d)"), lineno));
+    TR(TRACE_UPDATE, (T_CALLED("TransformLine(%p, %d)"), (void *) SP_PARM, lineno));
 
     /* copy new hash value to old one */
-    if (SP->oldhash && SP->newhash)
-	SP->oldhash[lineno] = SP->newhash[lineno];
+    if (SP_PARM->oldhash && SP_PARM->newhash)
+	SP_PARM->oldhash[lineno] = SP_PARM->newhash[lineno];
 
     /*
      * If we have colors, there is the possibility of having two color pairs
@@ -1155,19 +1246,20 @@
      * for this case, and update the old line with the new line's colors when
      * they are equivalent.
      */
-    if (SP->_coloron) {
+    if (SP_PARM->_coloron) {
 	int oldPair;
 	int newPair;
 
-	for (n = 0; n < screen_columns; n++) {
+	for (n = 0; n < screen_columns(SP_PARM); n++) {
 	    if (!CharEq(newLine[n], oldLine[n])) {
 		oldPair = GetPair(oldLine[n]);
 		newPair = GetPair(newLine[n]);
 		if (oldPair != newPair
 		    && unColor(oldLine[n]) == unColor(newLine[n])) {
-		    if (oldPair < COLOR_PAIRS
-			&& newPair < COLOR_PAIRS
-			&& SP->_color_pairs[oldPair] == SP->_color_pairs[newPair]) {
+		    if (oldPair < SP_PARM->_pair_limit
+			&& newPair < SP_PARM->_pair_limit
+			&& (SP_PARM->_color_pairs[oldPair] ==
+			    SP_PARM->_color_pairs[newPair])) {
 			SetPair(oldLine[n], GetPair(newLine[n]));
 		    }
 		}
@@ -1177,7 +1269,7 @@
 
     if (ceol_standout_glitch && clr_eol) {
 	firstChar = 0;
-	while (firstChar < screen_columns) {
+	while (firstChar < screen_columns(SP_PARM)) {
 	    if (!SameAttrOf(newLine[firstChar], oldLine[firstChar])) {
 		attrchanged = TRUE;
 		break;
@@ -1189,9 +1281,13 @@
     firstChar = 0;
 
     if (attrchanged) {		/* we may have to disregard the whole line */
-	GoTo(lineno, firstChar);
-	ClrToEOL(ClrBlank(curscr), FALSE);
-	PutRange(oldLine, newLine, lineno, 0, (screen_columns - 1));
+	GoTo(NCURSES_SP_ARGx lineno, firstChar);
+	ClrToEOL(NCURSES_SP_ARGx
+		 ClrBlank(NCURSES_SP_ARGx
+			  CurScreen(SP_PARM)), FALSE);
+	PutRange(NCURSES_SP_ARGx
+		 oldLine, newLine, lineno, 0,
+		 screen_columns(SP_PARM) - 1);
 #if USE_XMC_SUPPORT
 
 	/*
@@ -1206,8 +1302,8 @@
 	 * following operation.
 	 */
     } else if (magic_cookie_glitch > 0) {
-	GoTo(lineno, firstChar);
-	for (n = 0; n < screen_columns; n++) {
+	GoTo(NCURSES_SP_ARGx lineno, firstChar);
+	for (n = 0; n < screen_columns(SP_PARM); n++) {
 	    int m = n + magic_cookie_glitch;
 
 	    /* check for turn-on:
@@ -1216,26 +1312,30 @@
 	     */
 	    if (ISBLANK(newLine[n])
 		&& ((n > 0
-		     && xmc_turn_on(newLine[n - 1], newLine[n]))
+		     && xmc_turn_on(SP_PARM, newLine[n - 1], newLine[n]))
 		    || (n == 0
 			&& lineno > 0
-			&& xmc_turn_on(xmc_new(lineno - 1, screen_columns - 1),
+			&& xmc_turn_on(SP_PARM,
+				       xmc_new(SP_PARM, lineno - 1,
+					       screen_columns(SP_PARM) - 1),
 				       newLine[n])))) {
 		n = m;
 	    }
 
-	    PutChar(CHREF(newLine[n]));
+	    PutChar(NCURSES_SP_ARGx CHREF(newLine[n]));
 
 	    /* check for turn-off:
 	     * If we are writing an attributed non-blank, where the
 	     * next cell is blank, and not attributed.
 	     */
 	    if (!ISBLANK(newLine[n])
-		&& ((n + 1 < screen_columns
-		     && xmc_turn_off(newLine[n], newLine[n + 1]))
-		    || (n + 1 >= screen_columns
-			&& lineno + 1 < screen_lines
-			&& xmc_turn_off(newLine[n], xmc_new(lineno + 1, 0))))) {
+		&& ((n + 1 < screen_columns(SP_PARM)
+		     && xmc_turn_off(SP_PARM, newLine[n], newLine[n + 1]))
+		    || (n + 1 >= screen_columns(SP_PARM)
+			&& lineno + 1 < screen_lines(SP_PARM)
+			&& xmc_turn_off(SP_PARM,
+					newLine[n],
+					xmc_new(SP_PARM, lineno + 1, 0))))) {
 		n = m;
 	    }
 
@@ -1246,38 +1346,40 @@
 
 	/* it may be cheap to clear leading whitespace with clr_bol */
 	blank = newLine[0];
-	if (clr_bol && can_clear_with(CHREF(blank))) {
+	if (clr_bol && can_clear_with(NCURSES_SP_ARGx CHREF(blank))) {
 	    int oFirstChar, nFirstChar;
 
-	    for (oFirstChar = 0; oFirstChar < screen_columns; oFirstChar++)
+	    for (oFirstChar = 0;
+		 oFirstChar < screen_columns(SP_PARM);
+		 oFirstChar++)
 		if (!CharEq(oldLine[oFirstChar], blank))
 		    break;
-	    for (nFirstChar = 0; nFirstChar < screen_columns; nFirstChar++)
+	    for (nFirstChar = 0;
+		 nFirstChar < screen_columns(SP_PARM);
+		 nFirstChar++)
 		if (!CharEq(newLine[nFirstChar], blank))
 		    break;
 
 	    if (nFirstChar == oFirstChar) {
 		firstChar = nFirstChar;
 		/* find the first differing character */
-		while (firstChar < screen_columns
+		while (firstChar < screen_columns(SP_PARM)
 		       && CharEq(newLine[firstChar], oldLine[firstChar]))
 		    firstChar++;
 	    } else if (oFirstChar > nFirstChar) {
 		firstChar = nFirstChar;
 	    } else {		/* oFirstChar < nFirstChar */
 		firstChar = oFirstChar;
-		if (SP->_el1_cost < nFirstChar - oFirstChar) {
-		    if (nFirstChar >= screen_columns
-			&& SP->_el_cost <= SP->_el1_cost) {
-			GoTo(lineno, 0);
-			UpdateAttrs(blank);
-			TPUTS_TRACE("clr_eol");
-			putp(clr_eol);
+		if (SP_PARM->_el1_cost < nFirstChar - oFirstChar) {
+		    if (nFirstChar >= screen_columns(SP_PARM)
+			&& SP_PARM->_el_cost <= SP_PARM->_el1_cost) {
+			GoTo(NCURSES_SP_ARGx lineno, 0);
+			UpdateAttrs(SP_PARM, blank);
+			NCURSES_PUTP2("clr_eol", clr_eol);
 		    } else {
-			GoTo(lineno, nFirstChar - 1);
-			UpdateAttrs(blank);
-			TPUTS_TRACE("clr_bol");
-			putp(clr_bol);
+			GoTo(NCURSES_SP_ARGx lineno, nFirstChar - 1);
+			UpdateAttrs(SP_PARM, blank);
+			NCURSES_PUTP2("clr_bol", clr_bol);
 		    }
 
 		    while (firstChar < nFirstChar)
@@ -1286,64 +1388,81 @@
 	    }
 	} else {
 	    /* find the first differing character */
-	    while (firstChar < screen_columns
+	    while (firstChar < screen_columns(SP_PARM)
 		   && CharEq(newLine[firstChar], oldLine[firstChar]))
 		firstChar++;
 	}
 	/* if there wasn't one, we're done */
-	if (firstChar >= screen_columns) {
+	if (firstChar >= screen_columns(SP_PARM)) {
 	    TR(TRACE_UPDATE, (T_RETURN("")));
 	    return;
 	}
 
-	blank = newLine[screen_columns - 1];
+	blank = newLine[screen_columns(SP_PARM) - 1];
 
-	if (!can_clear_with(CHREF(blank))) {
+	if (!can_clear_with(NCURSES_SP_ARGx CHREF(blank))) {
 	    /* find the last differing character */
-	    nLastChar = screen_columns - 1;
+	    nLastChar = screen_columns(SP_PARM) - 1;
 
 	    while (nLastChar > firstChar
 		   && CharEq(newLine[nLastChar], oldLine[nLastChar]))
 		nLastChar--;
 
 	    if (nLastChar >= firstChar) {
-		GoTo(lineno, firstChar);
-		PutRange(oldLine, newLine, lineno, firstChar, nLastChar);
+		GoTo(NCURSES_SP_ARGx lineno, firstChar);
+		PutRange(NCURSES_SP_ARGx
+			 oldLine,
+			 newLine,
+			 lineno,
+			 firstChar,
+			 nLastChar);
 		memcpy(oldLine + firstChar,
 		       newLine + firstChar,
-		       (nLastChar - firstChar + 1) * sizeof(NCURSES_CH_T));
+		       (unsigned) (nLastChar - firstChar + 1) * sizeof(NCURSES_CH_T));
 	    }
 	    TR(TRACE_UPDATE, (T_RETURN("")));
 	    return;
 	}
 
 	/* find last non-blank character on old line */
-	oLastChar = screen_columns - 1;
+	oLastChar = screen_columns(SP_PARM) - 1;
 	while (oLastChar > firstChar && CharEq(oldLine[oLastChar], blank))
 	    oLastChar--;
 
 	/* find last non-blank character on new line */
-	nLastChar = screen_columns - 1;
+	nLastChar = screen_columns(SP_PARM) - 1;
 	while (nLastChar > firstChar && CharEq(newLine[nLastChar], blank))
 	    nLastChar--;
 
 	if ((nLastChar == firstChar)
-	    && (SP->_el_cost < (oLastChar - nLastChar))) {
-	    GoTo(lineno, firstChar);
+	    && (SP_PARM->_el_cost < (oLastChar - nLastChar))) {
+	    GoTo(NCURSES_SP_ARGx lineno, firstChar);
 	    if (!CharEq(newLine[firstChar], blank))
-		PutChar(CHREF(newLine[firstChar]));
-	    ClrToEOL(blank, FALSE);
+		PutChar(NCURSES_SP_ARGx CHREF(newLine[firstChar]));
+	    ClrToEOL(NCURSES_SP_ARGx blank, FALSE);
 	} else if ((nLastChar != oLastChar)
 		   && (!CharEq(newLine[nLastChar], oldLine[oLastChar])
-		       || !(_nc_idcok && has_ic()))) {
-	    GoTo(lineno, firstChar);
-	    if ((oLastChar - nLastChar) > SP->_el_cost) {
-		if (PutRange(oldLine, newLine, lineno, firstChar, nLastChar))
-		    GoTo(lineno, nLastChar + 1);
-		ClrToEOL(blank, FALSE);
+		       || !(SP_PARM->_nc_sp_idcok
+			    && NCURSES_SP_NAME(has_ic) (NCURSES_SP_ARG)))) {
+	    GoTo(NCURSES_SP_ARGx lineno, firstChar);
+	    if ((oLastChar - nLastChar) > SP_PARM->_el_cost) {
+		if (PutRange(NCURSES_SP_ARGx
+			     oldLine,
+			     newLine,
+			     lineno,
+			     firstChar,
+			     nLastChar)) {
+		    GoTo(NCURSES_SP_ARGx lineno, nLastChar + 1);
+		}
+		ClrToEOL(NCURSES_SP_ARGx blank, FALSE);
 	    } else {
 		n = max(nLastChar, oLastChar);
-		PutRange(oldLine, newLine, lineno, firstChar, n);
+		PutRange(NCURSES_SP_ARGx
+			 oldLine,
+			 newLine,
+			 lineno,
+			 firstChar,
+			 n);
 	    }
 	} else {
 	    int nLastNonblank = nLastChar;
@@ -1364,33 +1483,52 @@
 
 	    n = min(oLastChar, nLastChar);
 	    if (n >= firstChar) {
-		GoTo(lineno, firstChar);
-		PutRange(oldLine, newLine, lineno, firstChar, n);
+		GoTo(NCURSES_SP_ARGx lineno, firstChar);
+		PutRange(NCURSES_SP_ARGx
+			 oldLine,
+			 newLine,
+			 lineno,
+			 firstChar,
+			 n);
 	    }
 
 	    if (oLastChar < nLastChar) {
 		int m = max(nLastNonblank, oLastNonblank);
 #if USE_WIDEC_SUPPORT
-		while (isWidecExt(newLine[n + 1]) && n) {
-		    --n;
-		    --oLastChar;
+		if (n) {
+		    while (isWidecExt(newLine[n + 1]) && n) {
+			--n;
+			--oLastChar;	/* increase cost */
+		    }
+		} else if (n >= firstChar &&
+			   isWidecBase(newLine[n])) {
+		    while (isWidecExt(newLine[n + 1])) {
+			++n;
+			++oLastChar;	/* decrease cost */
+		    }
 		}
 #endif
-		GoTo(lineno, n + 1);
+		GoTo(NCURSES_SP_ARGx lineno, n + 1);
 		if ((nLastChar < nLastNonblank)
-		    || InsCharCost(nLastChar - oLastChar) > (m - n)) {
-		    PutRange(oldLine, newLine, lineno, n + 1, m);
+		    || InsCharCost(SP_PARM, nLastChar - oLastChar) > (m - n)) {
+		    PutRange(NCURSES_SP_ARGx
+			     oldLine,
+			     newLine,
+			     lineno,
+			     n + 1,
+			     m);
 		} else {
-		    InsStr(&newLine[n + 1], nLastChar - oLastChar);
+		    InsStr(NCURSES_SP_ARGx &newLine[n + 1], nLastChar - oLastChar);
 		}
 	    } else if (oLastChar > nLastChar) {
-		GoTo(lineno, n + 1);
-		if (DelCharCost(oLastChar - nLastChar)
-		    > SP->_el_cost + nLastNonblank - (n + 1)) {
-		    if (PutRange(oldLine, newLine, lineno,
-				 n + 1, nLastNonblank))
-			GoTo(lineno, nLastNonblank + 1);
-		    ClrToEOL(blank, FALSE);
+		GoTo(NCURSES_SP_ARGx lineno, n + 1);
+		if (DelCharCost(SP_PARM, oLastChar - nLastChar)
+		    > SP_PARM->_el_cost + nLastNonblank - (n + 1)) {
+		    if (PutRange(NCURSES_SP_ARGx oldLine, newLine, lineno,
+				 n + 1, nLastNonblank)) {
+			GoTo(NCURSES_SP_ARGx lineno, nLastNonblank + 1);
+		    }
+		    ClrToEOL(NCURSES_SP_ARGx blank, FALSE);
 		} else {
 		    /*
 		     * The delete-char sequence will
@@ -1400,18 +1538,18 @@
 		     * setting the video attributes from
 		     * the last character on the row.
 		     */
-		    UpdateAttrs(blank);
-		    DelChar(oLastChar - nLastChar);
+		    UpdateAttrs(SP_PARM, blank);
+		    DelChar(NCURSES_SP_ARGx oLastChar - nLastChar);
 		}
 	    }
 	}
     }
 
     /* update the code's internal representation */
-    if (screen_columns > firstChar)
+    if (screen_columns(SP_PARM) > firstChar)
 	memcpy(oldLine + firstChar,
 	       newLine + firstChar,
-	       (screen_columns - firstChar) * sizeof(NCURSES_CH_T));
+	       (unsigned) (screen_columns(SP_PARM) - firstChar) * sizeof(NCURSES_CH_T));
     TR(TRACE_UPDATE, (T_RETURN("")));
     return;
 }
@@ -1424,7 +1562,7 @@
 */
 
 static void
-ClearScreen(NCURSES_CH_T blank)
+ClearScreen(NCURSES_SP_DCLx NCURSES_CH_T blank)
 {
     int i, j;
     bool fast_clear = (clear_screen || clr_eos || clr_eol);
@@ -1432,9 +1570,13 @@
     TR(TRACE_UPDATE, ("ClearScreen() called"));
 
 #if NCURSES_EXT_FUNCS
-    if (SP->_coloron
-	&& !SP->_default_color) {
-	_nc_do_color(GET_SCREEN_PAIR(SP), 0, FALSE, _nc_outch);
+    if (SP_PARM->_coloron
+	&& !SP_PARM->_default_color) {
+	NCURSES_SP_NAME(_nc_do_color) (NCURSES_SP_ARGx
+				       (short) GET_SCREEN_PAIR(SP_PARM),
+				       0,
+				       FALSE,
+				       NCURSES_SP_NAME(_nc_outch));
 	if (!back_color_erase) {
 	    fast_clear = FALSE;
 	}
@@ -1443,42 +1585,44 @@
 
     if (fast_clear) {
 	if (clear_screen) {
-	    UpdateAttrs(blank);
-	    TPUTS_TRACE("clear_screen");
-	    putp(clear_screen);
-	    SP->_cursrow = SP->_curscol = 0;
-	    position_check(SP->_cursrow, SP->_curscol, "ClearScreen");
+	    UpdateAttrs(SP_PARM, blank);
+	    NCURSES_PUTP2("clear_screen", clear_screen);
+	    SP_PARM->_cursrow = SP_PARM->_curscol = 0;
+	    position_check(NCURSES_SP_ARGx
+			   SP_PARM->_cursrow,
+			   SP_PARM->_curscol,
+			   "ClearScreen");
 	} else if (clr_eos) {
-	    SP->_cursrow = SP->_curscol = -1;
-	    GoTo(0, 0);
-
-	    UpdateAttrs(blank);
+	    SP_PARM->_cursrow = SP_PARM->_curscol = -1;
+	    GoTo(NCURSES_SP_ARGx 0, 0);
+	    UpdateAttrs(SP_PARM, blank);
 	    TPUTS_TRACE("clr_eos");
-	    tputs(clr_eos, screen_lines, _nc_outch);
+	    NCURSES_SP_NAME(tputs) (NCURSES_SP_ARGx
+				    clr_eos,
+				    screen_lines(SP_PARM),
+				    NCURSES_SP_NAME(_nc_outch));
 	} else if (clr_eol) {
-	    SP->_cursrow = SP->_curscol = -1;
-
-	    UpdateAttrs(blank);
-	    for (i = 0; i < screen_lines; i++) {
-		GoTo(i, 0);
-		TPUTS_TRACE("clr_eol");
-		putp(clr_eol);
+	    SP_PARM->_cursrow = SP_PARM->_curscol = -1;
+	    UpdateAttrs(SP_PARM, blank);
+	    for (i = 0; i < screen_lines(SP_PARM); i++) {
+		GoTo(NCURSES_SP_ARGx i, 0);
+		NCURSES_PUTP2("clr_eol", clr_eol);
 	    }
-	    GoTo(0, 0);
+	    GoTo(NCURSES_SP_ARGx 0, 0);
 	}
     } else {
-	UpdateAttrs(blank);
-	for (i = 0; i < screen_lines; i++) {
-	    GoTo(i, 0);
-	    for (j = 0; j < screen_columns; j++)
-		PutChar(CHREF(blank));
+	UpdateAttrs(SP_PARM, blank);
+	for (i = 0; i < screen_lines(SP_PARM); i++) {
+	    GoTo(NCURSES_SP_ARGx i, 0);
+	    for (j = 0; j < screen_columns(SP_PARM); j++)
+		PutChar(NCURSES_SP_ARGx CHREF(blank));
 	}
-	GoTo(0, 0);
+	GoTo(NCURSES_SP_ARGx 0, 0);
     }
 
-    for (i = 0; i < screen_lines; i++) {
-	for (j = 0; j < screen_columns; j++)
-	    curscr->_line[i].text[j] = blank;
+    for (i = 0; i < screen_lines(SP_PARM); i++) {
+	for (j = 0; j < screen_columns(SP_PARM); j++)
+	    CurScreen(SP_PARM)->_line[i].text[j] = blank;
     }
 
     TR(TRACE_UPDATE, ("screen cleared"));
@@ -1492,49 +1636,51 @@
 */
 
 static void
-InsStr(NCURSES_CH_T * line, int count)
+InsStr(NCURSES_SP_DCLx NCURSES_CH_T * line, int count)
 {
-    TR(TRACE_UPDATE, ("InsStr(%p,%d) called", line, count));
+    TR(TRACE_UPDATE, ("InsStr(%p, %p,%d) called",
+		      (void *) SP_PARM,
+		      (void *) line, count));
 
     /* Prefer parm_ich as it has the smallest cost - no need to shift
      * the whole line on each character. */
     /* The order must match that of InsCharCost. */
     if (parm_ich) {
 	TPUTS_TRACE("parm_ich");
-	tputs(TPARM_1(parm_ich, count), count, _nc_outch);
+	NCURSES_SP_NAME(tputs) (NCURSES_SP_ARGx
+				TPARM_1(parm_ich, count),
+				count,
+				NCURSES_SP_NAME(_nc_outch));
 	while (count) {
-	    PutAttrChar(CHREF(*line));
+	    PutAttrChar(NCURSES_SP_ARGx CHREF(*line));
 	    line++;
 	    count--;
 	}
     } else if (enter_insert_mode && exit_insert_mode) {
-	TPUTS_TRACE("enter_insert_mode");
-	putp(enter_insert_mode);
+	NCURSES_PUTP2("enter_insert_mode", enter_insert_mode);
 	while (count) {
-	    PutAttrChar(CHREF(*line));
+	    PutAttrChar(NCURSES_SP_ARGx CHREF(*line));
 	    if (insert_padding) {
-		TPUTS_TRACE("insert_padding");
-		putp(insert_padding);
+		NCURSES_PUTP2("insert_padding", insert_padding);
 	    }
 	    line++;
 	    count--;
 	}
-	TPUTS_TRACE("exit_insert_mode");
-	putp(exit_insert_mode);
+	NCURSES_PUTP2("exit_insert_mode", exit_insert_mode);
     } else {
 	while (count) {
-	    TPUTS_TRACE("insert_character");
-	    putp(insert_character);
-	    PutAttrChar(CHREF(*line));
+	    NCURSES_PUTP2("insert_character", insert_character);
+	    PutAttrChar(NCURSES_SP_ARGx CHREF(*line));
 	    if (insert_padding) {
-		TPUTS_TRACE("insert_padding");
-		putp(insert_padding);
+		NCURSES_PUTP2("insert_padding", insert_padding);
 	    }
 	    line++;
 	    count--;
 	}
     }
-    position_check(SP->_cursrow, SP->_curscol, "InsStr");
+    position_check(NCURSES_SP_ARGx
+		   SP_PARM->_cursrow,
+		   SP_PARM->_curscol, "InsStr");
 }
 
 /*
@@ -1545,22 +1691,24 @@
 */
 
 static void
-DelChar(int count)
+DelChar(NCURSES_SP_DCLx int count)
 {
     int n;
 
-    TR(TRACE_UPDATE, ("DelChar(%d) called, position = (%ld,%ld)",
-		      count,
-		      (long) newscr->_cury,
-		      (long) newscr->_curx));
+    TR(TRACE_UPDATE, ("DelChar(%p, %d) called, position = (%ld,%ld)",
+		      (void *) SP_PARM, count,
+		      (long) NewScreen(SP_PARM)->_cury,
+		      (long) NewScreen(SP_PARM)->_curx));
 
     if (parm_dch) {
 	TPUTS_TRACE("parm_dch");
-	tputs(TPARM_1(parm_dch, count), count, _nc_outch);
+	NCURSES_SP_NAME(tputs) (NCURSES_SP_ARGx
+				TPARM_1(parm_dch, count),
+				count,
+				NCURSES_SP_NAME(_nc_outch));
     } else {
 	for (n = 0; n < count; n++) {
-	    TPUTS_TRACE("delete_character");
-	    putp(delete_character);
+	    NCURSES_PUTP2("delete_character", delete_character);
 	}
     }
 }
@@ -1599,54 +1747,62 @@
 
 /* Try to scroll up assuming given csr (miny, maxy). Returns ERR on failure */
 static int
-scroll_csr_forward(int n, int top, int bot, int miny, int maxy, NCURSES_CH_T blank)
+scroll_csr_forward(NCURSES_SP_DCLx
+		   int n,
+		   int top,
+		   int bot,
+		   int miny,
+		   int maxy,
+		   NCURSES_CH_T blank)
 {
     int i;
 
     if (n == 1 && scroll_forward && top == miny && bot == maxy) {
-	GoTo(bot, 0);
-	UpdateAttrs(blank);
-	TPUTS_TRACE("scroll_forward");
-	putp(scroll_forward);
+	GoTo(NCURSES_SP_ARGx bot, 0);
+	UpdateAttrs(SP_PARM, blank);
+	NCURSES_PUTP2("scroll_forward", scroll_forward);
     } else if (n == 1 && delete_line && bot == maxy) {
-	GoTo(top, 0);
-	UpdateAttrs(blank);
-	TPUTS_TRACE("delete_line");
-	putp(delete_line);
+	GoTo(NCURSES_SP_ARGx top, 0);
+	UpdateAttrs(SP_PARM, blank);
+	NCURSES_PUTP2("delete_line", delete_line);
     } else if (parm_index && top == miny && bot == maxy) {
-	GoTo(bot, 0);
-	UpdateAttrs(blank);
+	GoTo(NCURSES_SP_ARGx bot, 0);
+	UpdateAttrs(SP_PARM, blank);
 	TPUTS_TRACE("parm_index");
-	tputs(TPARM_2(parm_index, n, 0), n, _nc_outch);
+	NCURSES_SP_NAME(tputs) (NCURSES_SP_ARGx
+				TPARM_2(parm_index, n, 0),
+				n,
+				NCURSES_SP_NAME(_nc_outch));
     } else if (parm_delete_line && bot == maxy) {
-	GoTo(top, 0);
-	UpdateAttrs(blank);
+	GoTo(NCURSES_SP_ARGx top, 0);
+	UpdateAttrs(SP_PARM, blank);
 	TPUTS_TRACE("parm_delete_line");
-	tputs(TPARM_2(parm_delete_line, n, 0), n, _nc_outch);
+	NCURSES_SP_NAME(tputs) (NCURSES_SP_ARGx
+				TPARM_2(parm_delete_line, n, 0),
+				n,
+				NCURSES_SP_NAME(_nc_outch));
     } else if (scroll_forward && top == miny && bot == maxy) {
-	GoTo(bot, 0);
-	UpdateAttrs(blank);
+	GoTo(NCURSES_SP_ARGx bot, 0);
+	UpdateAttrs(SP_PARM, blank);
 	for (i = 0; i < n; i++) {
-	    TPUTS_TRACE("scroll_forward");
-	    putp(scroll_forward);
+	    NCURSES_PUTP2("scroll_forward", scroll_forward);
 	}
     } else if (delete_line && bot == maxy) {
-	GoTo(top, 0);
-	UpdateAttrs(blank);
+	GoTo(NCURSES_SP_ARGx top, 0);
+	UpdateAttrs(SP_PARM, blank);
 	for (i = 0; i < n; i++) {
-	    TPUTS_TRACE("delete_line");
-	    putp(delete_line);
+	    NCURSES_PUTP2("delete_line", delete_line);
 	}
     } else
 	return ERR;
 
 #if NCURSES_EXT_FUNCS
-    if (FILL_BCE()) {
+    if (FILL_BCE(SP_PARM)) {
 	int j;
 	for (i = 0; i < n; i++) {
-	    GoTo(bot - i, 0);
-	    for (j = 0; j < screen_columns; j++)
-		PutChar(CHREF(blank));
+	    GoTo(NCURSES_SP_ARGx bot - i, 0);
+	    for (j = 0; j < screen_columns(SP_PARM); j++)
+		PutChar(NCURSES_SP_ARGx CHREF(blank));
 	}
     }
 #endif
@@ -1656,55 +1812,62 @@
 /* Try to scroll down assuming given csr (miny, maxy). Returns ERR on failure */
 /* n > 0 */
 static int
-scroll_csr_backward(int n, int top, int bot, int miny, int maxy,
+scroll_csr_backward(NCURSES_SP_DCLx
+		    int n,
+		    int top,
+		    int bot,
+		    int miny,
+		    int maxy,
 		    NCURSES_CH_T blank)
 {
     int i;
 
     if (n == 1 && scroll_reverse && top == miny && bot == maxy) {
-	GoTo(top, 0);
-	UpdateAttrs(blank);
-	TPUTS_TRACE("scroll_reverse");
-	putp(scroll_reverse);
+	GoTo(NCURSES_SP_ARGx top, 0);
+	UpdateAttrs(SP_PARM, blank);
+	NCURSES_PUTP2("scroll_reverse", scroll_reverse);
     } else if (n == 1 && insert_line && bot == maxy) {
-	GoTo(top, 0);
-	UpdateAttrs(blank);
-	TPUTS_TRACE("insert_line");
-	putp(insert_line);
+	GoTo(NCURSES_SP_ARGx top, 0);
+	UpdateAttrs(SP_PARM, blank);
+	NCURSES_PUTP2("insert_line", insert_line);
     } else if (parm_rindex && top == miny && bot == maxy) {
-	GoTo(top, 0);
-	UpdateAttrs(blank);
+	GoTo(NCURSES_SP_ARGx top, 0);
+	UpdateAttrs(SP_PARM, blank);
 	TPUTS_TRACE("parm_rindex");
-	tputs(TPARM_2(parm_rindex, n, 0), n, _nc_outch);
+	NCURSES_SP_NAME(tputs) (NCURSES_SP_ARGx
+				TPARM_2(parm_rindex, n, 0),
+				n,
+				NCURSES_SP_NAME(_nc_outch));
     } else if (parm_insert_line && bot == maxy) {
-	GoTo(top, 0);
-	UpdateAttrs(blank);
+	GoTo(NCURSES_SP_ARGx top, 0);
+	UpdateAttrs(SP_PARM, blank);
 	TPUTS_TRACE("parm_insert_line");
-	tputs(TPARM_2(parm_insert_line, n, 0), n, _nc_outch);
+	NCURSES_SP_NAME(tputs) (NCURSES_SP_ARGx
+				TPARM_2(parm_insert_line, n, 0),
+				n,
+				NCURSES_SP_NAME(_nc_outch));
     } else if (scroll_reverse && top == miny && bot == maxy) {
-	GoTo(top, 0);
-	UpdateAttrs(blank);
+	GoTo(NCURSES_SP_ARGx top, 0);
+	UpdateAttrs(SP_PARM, blank);
 	for (i = 0; i < n; i++) {
-	    TPUTS_TRACE("scroll_reverse");
-	    putp(scroll_reverse);
+	    NCURSES_PUTP2("scroll_reverse", scroll_reverse);
 	}
     } else if (insert_line && bot == maxy) {
-	GoTo(top, 0);
-	UpdateAttrs(blank);
+	GoTo(NCURSES_SP_ARGx top, 0);
+	UpdateAttrs(SP_PARM, blank);
 	for (i = 0; i < n; i++) {
-	    TPUTS_TRACE("insert_line");
-	    putp(insert_line);
+	    NCURSES_PUTP2("insert_line", insert_line);
 	}
     } else
 	return ERR;
 
 #if NCURSES_EXT_FUNCS
-    if (FILL_BCE()) {
+    if (FILL_BCE(SP_PARM)) {
 	int j;
 	for (i = 0; i < n; i++) {
-	    GoTo(top + i, 0);
-	    for (j = 0; j < screen_columns; j++)
-		PutChar(CHREF(blank));
+	    GoTo(NCURSES_SP_ARGx top + i, 0);
+	    for (j = 0; j < screen_columns(SP_PARM); j++)
+		PutChar(NCURSES_SP_ARGx CHREF(blank));
 	}
     }
 #endif
@@ -1714,40 +1877,42 @@
 /* scroll by using delete_line at del and insert_line at ins */
 /* n > 0 */
 static int
-scroll_idl(int n, int del, int ins, NCURSES_CH_T blank)
+scroll_idl(NCURSES_SP_DCLx int n, int del, int ins, NCURSES_CH_T blank)
 {
     int i;
 
     if (!((parm_delete_line || delete_line) && (parm_insert_line || insert_line)))
 	return ERR;
 
-    GoTo(del, 0);
-    UpdateAttrs(blank);
+    GoTo(NCURSES_SP_ARGx del, 0);
+    UpdateAttrs(SP_PARM, blank);
     if (n == 1 && delete_line) {
-	TPUTS_TRACE("delete_line");
-	putp(delete_line);
+	NCURSES_PUTP2("delete_line", delete_line);
     } else if (parm_delete_line) {
 	TPUTS_TRACE("parm_delete_line");
-	tputs(TPARM_2(parm_delete_line, n, 0), n, _nc_outch);
+	NCURSES_SP_NAME(tputs) (NCURSES_SP_ARGx
+				TPARM_2(parm_delete_line, n, 0),
+				n,
+				NCURSES_SP_NAME(_nc_outch));
     } else {			/* if (delete_line) */
 	for (i = 0; i < n; i++) {
-	    TPUTS_TRACE("delete_line");
-	    putp(delete_line);
+	    NCURSES_PUTP2("delete_line", delete_line);
 	}
     }
 
-    GoTo(ins, 0);
-    UpdateAttrs(blank);
+    GoTo(NCURSES_SP_ARGx ins, 0);
+    UpdateAttrs(SP_PARM, blank);
     if (n == 1 && insert_line) {
-	TPUTS_TRACE("insert_line");
-	putp(insert_line);
+	NCURSES_PUTP2("insert_line", insert_line);
     } else if (parm_insert_line) {
 	TPUTS_TRACE("parm_insert_line");
-	tputs(TPARM_2(parm_insert_line, n, 0), n, _nc_outch);
+	NCURSES_SP_NAME(tputs) (NCURSES_SP_ARGx
+				TPARM_2(parm_insert_line, n, 0),
+				n,
+				NCURSES_SP_NAME(_nc_outch));
     } else {			/* if (insert_line) */
 	for (i = 0; i < n; i++) {
-	    TPUTS_TRACE("insert_line");
-	    putp(insert_line);
+	    NCURSES_PUTP2("insert_line", insert_line);
 	}
     }
 
@@ -1763,15 +1928,25 @@
  * save/restore cursor capabilities if the terminal has them.
  */
 NCURSES_EXPORT(int)
-_nc_scrolln(int n, int top, int bot, int maxy)
+NCURSES_SP_NAME(_nc_scrolln) (NCURSES_SP_DCLx
+			      int n,
+			      int top,
+			      int bot,
+			      int maxy)
 /* scroll region from top to bot by n lines */
 {
-    NCURSES_CH_T blank = ClrBlank(stdscr);
+    NCURSES_CH_T blank;
     int i;
     bool cursor_saved = FALSE;
     int res;
 
-    TR(TRACE_MOVE, ("mvcur_scrolln(%d, %d, %d, %d)", n, top, bot, maxy));
+    TR(TRACE_MOVE, ("_nc_scrolln(%p, %d, %d, %d, %d)",
+		    (void *) SP_PARM, n, top, bot, maxy));
+
+    if (!IsValidScreen(SP_PARM))
+	return (ERR);
+
+    blank = ClrBlank(NCURSES_SP_ARGx StdScreen(SP_PARM));
 
 #if USE_XMC_SUPPORT
     /*
@@ -1787,34 +1962,32 @@
 	 * Explicitly clear if stuff pushed off top of region might
 	 * be saved by the terminal.
 	 */
-	res = scroll_csr_forward(n, top, bot, 0, maxy, blank);
+	res = scroll_csr_forward(NCURSES_SP_ARGx n, top, bot, 0, maxy, blank);
 
 	if (res == ERR && change_scroll_region) {
 	    if ((((n == 1 && scroll_forward) || parm_index)
-		 && (SP->_cursrow == bot || SP->_cursrow == bot - 1))
+		 && (SP_PARM->_cursrow == bot || SP_PARM->_cursrow == bot - 1))
 		&& save_cursor && restore_cursor) {
 		cursor_saved = TRUE;
-		TPUTS_TRACE("save_cursor");
-		putp(save_cursor);
+		NCURSES_PUTP2("save_cursor", save_cursor);
 	    }
-	    TPUTS_TRACE("change_scroll_region");
-	    putp(TPARM_2(change_scroll_region, top, bot));
+	    NCURSES_PUTP2("change_scroll_region",
+			  TPARM_2(change_scroll_region, top, bot));
 	    if (cursor_saved) {
-		TPUTS_TRACE("restore_cursor");
-		putp(restore_cursor);
+		NCURSES_PUTP2("restore_cursor", restore_cursor);
 	    } else {
-		SP->_cursrow = SP->_curscol = -1;
+		SP_PARM->_cursrow = SP_PARM->_curscol = -1;
 	    }
 
-	    res = scroll_csr_forward(n, top, bot, top, bot, blank);
+	    res = scroll_csr_forward(NCURSES_SP_ARGx n, top, bot, top, bot, blank);
 
-	    TPUTS_TRACE("change_scroll_region");
-	    putp(TPARM_2(change_scroll_region, 0, maxy));
-	    SP->_cursrow = SP->_curscol = -1;
+	    NCURSES_PUTP2("change_scroll_region",
+			  TPARM_2(change_scroll_region, 0, maxy));
+	    SP_PARM->_cursrow = SP_PARM->_curscol = -1;
 	}
 
-	if (res == ERR && _nc_idlok)
-	    res = scroll_idl(n, top, bot - n + 1, blank);
+	if (res == ERR && SP_PARM->_nc_sp_idlok)
+	    res = scroll_idl(NCURSES_SP_ARGx n, top, bot - n + 1, blank);
 
 	/*
 	 * Clear the newly shifted-in text.
@@ -1823,44 +1996,45 @@
 	    && (non_dest_scroll_region || (memory_below && bot == maxy))) {
 	    static const NCURSES_CH_T blank2 = NewChar(BLANK_TEXT);
 	    if (bot == maxy && clr_eos) {
-		GoTo(bot - n + 1, 0);
-		ClrToEOS(blank2);
+		GoTo(NCURSES_SP_ARGx bot - n + 1, 0);
+		ClrToEOS(NCURSES_SP_ARGx blank2);
 	    } else {
 		for (i = 0; i < n; i++) {
-		    GoTo(bot - i, 0);
-		    ClrToEOL(blank2, FALSE);
+		    GoTo(NCURSES_SP_ARGx bot - i, 0);
+		    ClrToEOL(NCURSES_SP_ARGx blank2, FALSE);
 		}
 	    }
 	}
 
     } else {			/* (n < 0) - scroll down (backward) */
-	res = scroll_csr_backward(-n, top, bot, 0, maxy, blank);
+	res = scroll_csr_backward(NCURSES_SP_ARGx -n, top, bot, 0, maxy, blank);
 
 	if (res == ERR && change_scroll_region) {
-	    if (top != 0 && (SP->_cursrow == top || SP->_cursrow == top - 1)
+	    if (top != 0
+		&& (SP_PARM->_cursrow == top ||
+		    SP_PARM->_cursrow == top - 1)
 		&& save_cursor && restore_cursor) {
 		cursor_saved = TRUE;
-		TPUTS_TRACE("save_cursor");
-		putp(save_cursor);
+		NCURSES_PUTP2("save_cursor", save_cursor);
 	    }
-	    TPUTS_TRACE("change_scroll_region");
-	    putp(TPARM_2(change_scroll_region, top, bot));
+	    NCURSES_PUTP2("change_scroll_region",
+			  TPARM_2(change_scroll_region, top, bot));
 	    if (cursor_saved) {
-		TPUTS_TRACE("restore_cursor");
-		putp(restore_cursor);
+		NCURSES_PUTP2("restore_cursor", restore_cursor);
 	    } else {
-		SP->_cursrow = SP->_curscol = -1;
+		SP_PARM->_cursrow = SP_PARM->_curscol = -1;
 	    }
 
-	    res = scroll_csr_backward(-n, top, bot, top, bot, blank);
+	    res = scroll_csr_backward(NCURSES_SP_ARGx
+				      -n, top, bot, top, bot, blank);
 
-	    TPUTS_TRACE("change_scroll_region");
-	    putp(TPARM_2(change_scroll_region, 0, maxy));
-	    SP->_cursrow = SP->_curscol = -1;
+	    NCURSES_PUTP2("change_scroll_region",
+			  TPARM_2(change_scroll_region, 0, maxy));
+	    SP_PARM->_cursrow = SP_PARM->_curscol = -1;
 	}
 
-	if (res == ERR && _nc_idlok)
-	    res = scroll_idl(-n, bot + n + 1, top, blank);
+	if (res == ERR && SP_PARM->_nc_sp_idlok)
+	    res = scroll_idl(NCURSES_SP_ARGx -n, bot + n + 1, top, blank);
 
 	/*
 	 * Clear the newly shifted-in text.
@@ -1869,8 +2043,8 @@
 	    && (non_dest_scroll_region || (memory_above && top == 0))) {
 	    static const NCURSES_CH_T blank2 = NewChar(BLANK_TEXT);
 	    for (i = 0; i < -n; i++) {
-		GoTo(i + top, 0);
-		ClrToEOL(blank2, FALSE);
+		GoTo(NCURSES_SP_ARGx i + top, 0);
+		ClrToEOL(NCURSES_SP_ARGx blank2, FALSE);
 	    }
 	}
     }
@@ -1878,99 +2052,165 @@
     if (res == ERR)
 	return (ERR);
 
-    _nc_scroll_window(curscr, n, top, bot, blank);
+    _nc_scroll_window(CurScreen(SP_PARM), n,
+		      (NCURSES_SIZE_T) top,
+		      (NCURSES_SIZE_T) bot,
+		      blank);
 
     /* shift hash values too - they can be reused */
-    _nc_scroll_oldhash(n, top, bot);
+    NCURSES_SP_NAME(_nc_scroll_oldhash) (NCURSES_SP_ARGx n, top, bot);
 
     return (OK);
 }
 
-NCURSES_EXPORT(void)
-_nc_screen_resume(void)
+#if NCURSES_SP_FUNCS
+NCURSES_EXPORT(int)
+_nc_scrolln(int n, int top, int bot, int maxy)
 {
+    return NCURSES_SP_NAME(_nc_scrolln) (CURRENT_SCREEN, n, top, bot, maxy);
+}
+#endif
+
+NCURSES_EXPORT(void)
+NCURSES_SP_NAME(_nc_screen_resume) (NCURSES_SP_DCL0)
+{
+    assert(SP_PARM);
+
     /* make sure terminal is in a sane known state */
-    SetAttr(SCREEN_ATTRS(SP), A_NORMAL);
-    newscr->_clear = TRUE;
+    SetAttr(SCREEN_ATTRS(SP_PARM), A_NORMAL);
+    NewScreen(SP_PARM)->_clear = TRUE;
 
     /* reset color pairs and definitions */
-    if (SP->_coloron || SP->_color_defs)
-	_nc_reset_colors();
+    if (SP_PARM->_coloron || SP_PARM->_color_defs)
+	NCURSES_SP_NAME(_nc_reset_colors) (NCURSES_SP_ARG);
 
     /* restore user-defined colors, if any */
-    if (SP->_color_defs < 0) {
+    if (SP_PARM->_color_defs < 0) {
 	int n;
-	SP->_color_defs = -(SP->_color_defs);
-	for (n = 0; n < SP->_color_defs; ++n) {
-	    if (SP->_color_table[n].init) {
-		init_color(n,
-			   SP->_color_table[n].r,
-			   SP->_color_table[n].g,
-			   SP->_color_table[n].b);
+	SP_PARM->_color_defs = -(SP_PARM->_color_defs);
+	for (n = 0; n < SP_PARM->_color_defs; ++n) {
+	    if (SP_PARM->_color_table[n].init) {
+		NCURSES_SP_NAME(init_color) (NCURSES_SP_ARGx
+					     (short) n,
+					     SP_PARM->_color_table[n].r,
+					     SP_PARM->_color_table[n].g,
+					     SP_PARM->_color_table[n].b);
 	    }
 	}
     }
 
     if (exit_attribute_mode)
-	putp(exit_attribute_mode);
+	NCURSES_PUTP2("exit_attribute_mode", exit_attribute_mode);
     else {
 	/* turn off attributes */
 	if (exit_alt_charset_mode)
-	    putp(exit_alt_charset_mode);
+	    NCURSES_PUTP2("exit_alt_charset_mode", exit_alt_charset_mode);
 	if (exit_standout_mode)
-	    putp(exit_standout_mode);
+	    NCURSES_PUTP2("exit_standout_mode", exit_standout_mode);
 	if (exit_underline_mode)
-	    putp(exit_underline_mode);
+	    NCURSES_PUTP2("exit_underline_mode", exit_underline_mode);
     }
     if (exit_insert_mode)
-	putp(exit_insert_mode);
-    if (enter_am_mode && exit_am_mode)
-	putp(auto_right_margin ? enter_am_mode : exit_am_mode);
+	NCURSES_PUTP2("exit_insert_mode", exit_insert_mode);
+    if (enter_am_mode && exit_am_mode) {
+	if (auto_right_margin) {
+	    NCURSES_PUTP2("enter_am_mode", enter_am_mode);
+	} else {
+	    NCURSES_PUTP2("exit_am_mode", exit_am_mode);
+	}
+    }
 }
 
+#if NCURSES_SP_FUNCS
+NCURSES_EXPORT(void)
+_nc_screen_resume(void)
+{
+    NCURSES_SP_NAME(_nc_screen_resume) (CURRENT_SCREEN);
+}
+#endif
+
+NCURSES_EXPORT(void)
+NCURSES_SP_NAME(_nc_screen_init) (NCURSES_SP_DCL0)
+{
+    NCURSES_SP_NAME(_nc_screen_resume) (NCURSES_SP_ARG);
+}
+
+#if NCURSES_SP_FUNCS
 NCURSES_EXPORT(void)
 _nc_screen_init(void)
 {
-    _nc_screen_resume();
+    NCURSES_SP_NAME(_nc_screen_init) (CURRENT_SCREEN);
 }
+#endif
 
 /* wrap up screen handling */
 NCURSES_EXPORT(void)
-_nc_screen_wrap(void)
+NCURSES_SP_NAME(_nc_screen_wrap) (NCURSES_SP_DCL0)
 {
-    UpdateAttrs(normal);
+    if (SP_PARM != 0) {
+
+	UpdateAttrs(SP_PARM, normal);
 #if NCURSES_EXT_FUNCS
-    if (SP->_coloron
-	&& !SP->_default_color) {
-	static const NCURSES_CH_T blank = NewChar(BLANK_TEXT);
-	SP->_default_color = TRUE;
-	_nc_do_color(-1, 0, FALSE, _nc_outch);
-	SP->_default_color = FALSE;
+	if (SP_PARM->_coloron
+	    && !SP_PARM->_default_color) {
+	    static const NCURSES_CH_T blank = NewChar(BLANK_TEXT);
+	    SP_PARM->_default_color = TRUE;
+	    NCURSES_SP_NAME(_nc_do_color) (NCURSES_SP_ARGx
+					   -1,
+					   0,
+					   FALSE,
+					   NCURSES_SP_NAME(_nc_outch));
+	    SP_PARM->_default_color = FALSE;
 
-	mvcur(SP->_cursrow, SP->_curscol, screen_lines - 1, 0);
+	    TINFO_MVCUR(NCURSES_SP_ARGx
+			SP_PARM->_cursrow,
+			SP_PARM->_curscol,
+			screen_lines(SP_PARM) - 1,
+			0);
 
-	ClrToEOL(blank, TRUE);
-    }
+	    ClrToEOL(NCURSES_SP_ARGx blank, TRUE);
+	}
 #endif
-    if (SP->_color_defs) {
-	_nc_reset_colors();
+	if (SP_PARM->_color_defs) {
+	    NCURSES_SP_NAME(_nc_reset_colors) (NCURSES_SP_ARG);
+	}
     }
 }
 
+#if NCURSES_SP_FUNCS
+NCURSES_EXPORT(void)
+_nc_screen_wrap(void)
+{
+    NCURSES_SP_NAME(_nc_screen_wrap) (CURRENT_SCREEN);
+}
+#endif
+
 #if USE_XMC_SUPPORT
 NCURSES_EXPORT(void)
-_nc_do_xmc_glitch(attr_t previous)
+NCURSES_SP_NAME(_nc_do_xmc_glitch) (NCURSES_SP_DCLx attr_t previous)
 {
-    attr_t chg = XMC_CHANGES(previous ^ AttrOf(SCREEN_ATTRS(SP)));
+    if (SP_PARM != 0) {
+	attr_t chg = XMC_CHANGES(previous ^ AttrOf(SCREEN_ATTRS(SP_PARM)));
 
-    while (chg != 0) {
-	if (chg & 1) {
-	    SP->_curscol += magic_cookie_glitch;
-	    if (SP->_curscol >= SP->_columns)
-		wrap_cursor();
-	    TR(TRACE_UPDATE, ("bumped to %d,%d after cookie", SP->_cursrow, SP->_curscol));
+	while (chg != 0) {
+	    if (chg & 1) {
+		SP_PARM->_curscol += magic_cookie_glitch;
+		if (SP_PARM->_curscol >= SP_PARM->_columns)
+		    wrap_cursor(NCURSES_SP_ARG);
+		TR(TRACE_UPDATE, ("bumped to %d,%d after cookie",
+				  SP_PARM->_cursrow, SP_PARM->_curscol));
+	    }
+	    chg >>= 1;
 	}
-	chg >>= 1;
     }
 }
+
+#if NCURSES_SP_FUNCS
+NCURSES_EXPORT(void)
+_nc_do_xmc_glitch(attr_t previous)
+{
+    NCURSES_SP_NAME(_nc_do_xmc_glitch) (CURRENT_SCREEN, previous);
+}
+#endif
+
 #endif /* USE_XMC_SUPPORT */