Update nvi-1.79 to 2.1.1-4334a8297f

This is the gsoc-2011 project to clean up and backport multibyte support
from other nvi forks in a form we can use.

USE_WIDECHAR is on unless building for the rescue crunchgen. This should
allow editing in the native locale encoding.

USE_ICONV depends on make.conf having 'WITH_ICONV=YES' for now.  This
adds the ability to do things like edit a KOI8-R file while having $LANG
set to (say) en_US.UTF-8.  iconv is used to transcode the characters for
display.

Other points:
* It uses gencat and catopen/etc instead of homegrown msg catalog stuff.
* A lot of stuff has been trimmed out, eg: the perl and tcl bindings which
  we could never use in base anyway.
* It uses ncursesw when in widechar mode.  This could be interesting.

GSoC info: http://www.google-melange.com/gsoc/proposal/review/google/gsoc2011/zy/1
Repo at: https://github.com/lichray/nvi2

Obtained from:  Zhihao Yuan <lichray@gmail.com>

1 files changed, 0 insertions, 1119 deletions

diff --git a/contrib/nvi/perl_api/perl.xs b/contrib/nvi/perl_api/perl.xs
deleted file mode 100644
index 3b89ea44cc92..000000000000
--- a/contrib/nvi/perl_api/perl.xs
+++ /dev/null
@@ -1,1119 +0,0 @@
-/*-
- * Copyright (c) 1992, 1993, 1994
- *	The Regents of the University of California.  All rights reserved.
- * Copyright (c) 1992, 1993, 1994, 1995, 1996
- *	Keith Bostic.  All rights reserved.
- * Copyright (c) 1995
- *	George V. Neville-Neil. All rights reserved.
- * Copyright (c) 1996
- *	Sven Verdoolaege. All rights reserved.
- *
- * See the LICENSE file for redistribution information.
- *
- * $FreeBSD$
- */
-
-#include "config.h"
-
-#ifndef lint
-static const char sccsid[] = "@(#)perl.xs	8.27 (Berkeley) 10/16/96";
-#endif /* not lint */
-
-#include <sys/types.h>
-#include <sys/param.h>
-#include <sys/queue.h>
-#include <sys/time.h>
-
-#include <bitstring.h>
-#include <ctype.h>
-#include <limits.h>
-#include <signal.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <termios.h>
-#include <unistd.h>
-#include <errno.h>
-
-#include "../common/common.h"
-
-#include <EXTERN.h>
-#include <perl.h>
-#include <XSUB.h>
-
-#include "perl_extern.h"
-
-static void msghandler __P((SCR *, mtype_t, char *, size_t));
-
-extern GS *__global_list;			/* XXX */
-
-static char *errmsg = 0;
-
-/*
- * INITMESSAGE --
- *	Macros to point messages at the Perl message handler.
- */
-#define	INITMESSAGE							\
-	scr_msg = __global_list->scr_msg;				\
-	__global_list->scr_msg = msghandler;
-#define	ENDMESSAGE							\
-	__global_list->scr_msg = scr_msg;				\
-	if (rval) croak(errmsg);
-
-static void xs_init __P((void));
-
-/*
- * perl_end --
- *	Clean up perl interpreter
- *
- * PUBLIC: int perl_end __P((GS *));
- */
-int
-perl_end(gp)
-	GS *gp;
-{
-	/*
-	 * Call perl_run and perl_destuct to call END blocks and DESTROY
-	 * methods.
-	 */
-	if (gp->perl_interp) {
-		/*Irestartop = 0;            			/ * XXX */
-		perl_run(gp->perl_interp);
-		perl_destruct(gp->perl_interp);
-#if defined(DEBUG) || defined(PURIFY) || defined(LIBRARY)
-		perl_free(gp->perl_interp);
-#endif
-	}
-}
-
-/*
- * perl_eval
- *	Evaluate a string
- * 	We don't use mortal SVs because no one will clean up after us
- */
-static void 
-perl_eval(string)
-	char *string;
-{
-#ifdef HAVE_PERL_5_003_01
-	SV* sv = newSVpv(string, 0);
-
-	perl_eval_sv(sv, G_DISCARD | G_NOARGS);
-	SvREFCNT_dec(sv);
-#else
-	char *argv[2];
-
-	argv[0] = string;
-	argv[1] = NULL;
-	perl_call_argv("_eval_", G_EVAL | G_DISCARD | G_KEEPERR, argv);
-#endif
-}
-
-/*
- * perl_init --
- *	Create the perl commands used by nvi.
- *
- * PUBLIC: int perl_init __P((SCR *));
- */
-int
-perl_init(scrp)
-	SCR *scrp;
-{
-	AV * av;
-	GS *gp;
-	char *bootargs[] = { "VI", NULL };
-#ifndef USE_SFIO
-	SV *svcurscr;
-#endif
-
-#ifndef HAVE_PERL_5_003_01
-	static char *args[] = { "", "-e", "sub _eval_ { eval $_[0] }" };
-#else
-	static char *args[] = { "", "-e", "" };
-#endif
-	STRLEN length;
-	char *file = __FILE__;
-
-	gp = scrp->gp;
-	gp->perl_interp = perl_alloc();
-  	perl_construct(gp->perl_interp);
-	if (perl_parse(gp->perl_interp, xs_init, 3, args, 0)) {
-		perl_destruct(gp->perl_interp);
-		perl_free(gp->perl_interp);
-		gp->perl_interp = NULL;
-		return 1;
-	}
-        perl_call_argv("VI::bootstrap", G_DISCARD, bootargs);
-	perl_eval("$SIG{__WARN__}='VI::Warn'");
-
-	av_unshift(av = GvAVn(PL_incgv), 1);
-	av_store(av, 0, newSVpv(_PATH_PERLSCRIPTS,
-				sizeof(_PATH_PERLSCRIPTS)-1));
-
-#ifdef USE_SFIO
-	sfdisc(PerlIO_stdout(), sfdcnewnvi(scrp));
-	sfdisc(PerlIO_stderr(), sfdcnewnvi(scrp));
-#else
-	svcurscr = perl_get_sv("curscr", TRUE);
-	sv_magic((SV *)gv_fetchpv("STDOUT",TRUE, SVt_PVIO), svcurscr,
-		 	'q', Nullch, 0);
-	sv_magic((SV *)gv_fetchpv("STDERR",TRUE, SVt_PVIO), svcurscr,
-		 	'q', Nullch, 0);
-#endif /* USE_SFIO */
-	return (0);
-}
-
-/*
- * perl_screen_end
- *	Remove all refences to the screen to be destroyed
- *
- * PUBLIC: int perl_screen_end __P((SCR*));
- */
-int
-perl_screen_end(scrp)
-	SCR *scrp;
-{
-	if (scrp->perl_private) {
-		sv_setiv((SV*) scrp->perl_private, 0);
-	}
-	return 0;
-}
-
-static void
-my_sighandler(i)
-	int i;
-{
-	croak("Perl command interrupted by SIGINT");
-}
-
-/* Create a new reference to an SV pointing to the SCR structure
- * The perl_private part of the SCR structure points to the SV,
- * so there can only be one such SV for a particular SCR structure.
- * When the last reference has gone (DESTROY is called),
- * perl_private is reset; When the screen goes away before
- * all references are gone, the value of the SV is reset;
- * any subsequent use of any of those reference will produce
- * a warning. (see typemap)
- */
-static SV *
-newVIrv(rv, screen)
-	SV *rv;
-	SCR *screen;
-{
-	sv_upgrade(rv, SVt_RV);
-	if (!screen->perl_private) {
-		screen->perl_private = newSV(0);
-		sv_setiv(screen->perl_private, (IV) screen);
-	} 
-	else SvREFCNT_inc(screen->perl_private);
-	SvRV(rv) = screen->perl_private;
-	SvROK_on(rv);
-	return sv_bless(rv, gv_stashpv("VI", TRUE));
-}
-
-
-/* 
- * perl_ex_perl -- :[line [,line]] perl [command]
- *	Run a command through the perl interpreter.
- *
- * PUBLIC: int perl_ex_perl __P((SCR*, CHAR_T *, size_t, recno_t, recno_t));
- */
-int 
-perl_ex_perl(scrp, cmdp, cmdlen, f_lno, t_lno)
-	SCR *scrp;
-	CHAR_T *cmdp;
-	size_t cmdlen;
-	recno_t f_lno, t_lno;
-{
-	static SV *svcurscr = 0, *svstart, *svstop, *svid;
-	GS *gp;
-	STRLEN length;
-	size_t len;
-	char *err;
-	Signal_t (*istat)();
-
-	/* Initialize the interpreter. */
-	gp = scrp->gp;
-	if (!svcurscr) {
-		if (gp->perl_interp == NULL && perl_init(scrp))
-			return (1);
-		SvREADONLY_on(svcurscr = perl_get_sv("curscr", TRUE));
-		SvREADONLY_on(svstart = perl_get_sv("VI::StartLine", TRUE));
-		SvREADONLY_on(svstop = perl_get_sv("VI::StopLine", TRUE));
-		SvREADONLY_on(svid = perl_get_sv("VI::ScreenId", TRUE));
-	}
-
-	sv_setiv(svstart, f_lno);
-	sv_setiv(svstop, t_lno);
-	newVIrv(svcurscr, scrp);
-	/* Backwards compatibility. */
-	newVIrv(svid, scrp);
-
-	istat = signal(SIGINT, my_sighandler);
-	perl_eval(cmdp);
-	signal(SIGINT, istat);
-
-	SvREFCNT_dec(SvRV(svcurscr));
-	SvROK_off(svcurscr);
-	SvREFCNT_dec(SvRV(svid));
-	SvROK_off(svid);
-
-	err = SvPV(GvSV(PL_errgv), length);
-	if (!length)
-		return (0);
-
-	err[length - 1] = '\0';
-	msgq(scrp, M_ERR, "perl: %s", err);
-	return (1);
-}
-
-/*
- * replace_line
- *	replace a line with the contents of the perl variable $_
- *	lines are split at '\n's
- *	if $_ is undef, the line is deleted
- *	returns possibly adjusted linenumber
- */
-static int 
-replace_line(scrp, line, t_lno)
-	SCR *scrp;
-	recno_t line, *t_lno;
-{
-	char *str, *next;
-	size_t len;
-
-	if (SvOK(GvSV(PL_defgv))) {
-		str = SvPV(GvSV(PL_defgv),len);
-		next = memchr(str, '\n', len);
-		api_sline(scrp, line, str, next ? (next - str) : len);
-		while (next++) {
-			len -= next - str;
-			next = memchr(str = next, '\n', len);
-			api_iline(scrp, ++line, str, next ? (next - str) : len);
-			(*t_lno)++;
-		}
-	} else {
-		api_dline(scrp, line--);
-		(*t_lno)--;
-	}
-	return line;
-}
-
-/* 
- * perl_ex_perldo -- :[line [,line]] perl [command]
- *	Run a set of lines through the perl interpreter.
- *
- * PUBLIC: int perl_ex_perldo __P((SCR*, CHAR_T *, size_t, recno_t, recno_t));
- */
-int 
-perl_ex_perldo(scrp, cmdp, cmdlen, f_lno, t_lno)
-	SCR *scrp;
-	CHAR_T *cmdp;
-	size_t cmdlen;
-	recno_t f_lno, t_lno;
-{
-	static SV *svcurscr = 0, *svstart, *svstop, *svid;
-	CHAR_T *p;
-	GS *gp;
-	STRLEN length;
-	size_t len;
-	recno_t i;
-	char *str;
-#ifndef HAVE_PERL_5_003_01
-	char *argv[2];
-#else
-	SV* sv;
-#endif
-	dSP;
-
-	/* Initialize the interpreter. */
-	gp = scrp->gp;
-	if (!svcurscr) {
-		if (gp->perl_interp == NULL && perl_init(scrp))
-			return (1);
-		SPAGAIN;
-		SvREADONLY_on(svcurscr = perl_get_sv("curscr", TRUE));
-		SvREADONLY_on(svstart = perl_get_sv("VI::StartLine", TRUE));
-		SvREADONLY_on(svstop = perl_get_sv("VI::StopLine", TRUE));
-		SvREADONLY_on(svid = perl_get_sv("VI::ScreenId", TRUE));
-	}
-
-#ifndef HAVE_PERL_5_003_01
-	argv[0] = cmdp;
-	argv[1] = NULL;
-#else
-	length = strlen(cmdp);
-	sv = newSV(length + sizeof("sub VI::perldo {")-1 + 1 /* } */);
-	sv_setpvn(sv, "sub VI::perldo {", sizeof("sub VI::perldo {")-1); 
-	sv_catpvn(sv, cmdp, length);
-	sv_catpvn(sv, "}", 1);
-	perl_eval_sv(sv, G_DISCARD | G_NOARGS);
-	SvREFCNT_dec(sv);
-	str = SvPV(GvSV(PL_errgv),length);
-	if (length)
-		goto err;
-#endif
-
-	newVIrv(svcurscr, scrp);
-	/* Backwards compatibility. */
-	newVIrv(svid, scrp);
-
-	ENTER;
-	SAVETMPS;
-	for (i = f_lno; i <= t_lno && !api_gline(scrp, i, &str, &len); i++) {
-		sv_setpvn(GvSV(PL_defgv),str,len);
-		sv_setiv(svstart, i);
-		sv_setiv(svstop, i);
-#ifndef HAVE_PERL_5_003_01
-		perl_call_argv("_eval_", G_SCALAR | G_EVAL | G_KEEPERR, argv);
-#else
-		PUSHMARK(sp);
-                perl_call_pv("VI::perldo", G_SCALAR | G_EVAL);
-#endif
-		str = SvPV(GvSV(PL_errgv), length);
-		if (length) break;
-		SPAGAIN;
-		if(SvTRUEx(POPs)) 
-			i = replace_line(scrp, i, &t_lno);
-		PUTBACK;
-	}
-	FREETMPS;
-	LEAVE;
-
-	SvREFCNT_dec(SvRV(svcurscr));
-	SvROK_off(svcurscr);
-	SvREFCNT_dec(SvRV(svid));
-	SvROK_off(svid);
-
-	if (!length)
-		return (0);
-
-err:	str[length - 1] = '\0';
-	msgq(scrp, M_ERR, "perl: %s", str);
-	return (1);
-}
-
-/*
- * msghandler --
- *	Perl message routine so that error messages are processed in
- *	Perl, not in nvi.
- */
-static void
-msghandler(sp, mtype, msg, len)
-	SCR *sp;
-	mtype_t mtype;
-	char *msg;
-	size_t len;
-{
-	/* Replace the trailing <newline> with an EOS. */
-	/* Let's do that later instead */
-	if (errmsg) free (errmsg);
-	errmsg = malloc(len + 1);
-	memcpy(errmsg, msg, len);
-	errmsg[len] = '\0';
-}
-
-/* Register any extra external extensions */
-
-extern void boot_DynaLoader _((CV* cv));
-extern void boot_VI _((CV* cv));
-
-static void
-xs_init()
-{
-	char *file = __FILE__;
-
-#ifdef HAVE_PERL_5_003_01
-	dXSUB_SYS
-#endif
-	newXS("DynaLoader::boot_DynaLoader", boot_DynaLoader, file);
-	newXS("VI::bootstrap", boot_VI, file);
-}
-
-typedef SCR *	VI;
-typedef SCR *	VI__OPT;
-typedef SCR *	VI__MAP;
-typedef SCR * 	VI__MARK;
-typedef AV *	AVREF;
-
-MODULE = VI	PACKAGE = VI
-
-# msg --
-#	Set the message line to text.
-#
-# Perl Command: VI::Msg
-# Usage: VI::Msg screenId text
-
-void
-Msg(screen, text)
-	VI          screen
-	char *      text
- 
-	ALIAS:
-	PRINT = 1
-
-	CODE:
-	api_imessage(screen, text);
-
-# XS_VI_escreen --
-#	End a screen.
-#
-# Perl Command: VI::EndScreen
-# Usage: VI::EndScreen screenId
-
-void
-EndScreen(screen)
-	VI	screen
-
-	PREINIT:
-	void (*scr_msg) __P((SCR *, mtype_t, char *, size_t));
-	int rval;
-
-	CODE:
-	INITMESSAGE;
-	rval = api_escreen(screen);
-	ENDMESSAGE;
-
-# XS_VI_iscreen --
-#	Create a new screen.  If a filename is specified then the screen
-#	is opened with that file.
-#
-# Perl Command: VI::NewScreen
-# Usage: VI::NewScreen screenId [file]
-
-VI
-Edit(screen, ...)
-	VI screen
-
-	ALIAS:
-	NewScreen = 1
-
-	PROTOTYPE: $;$
-	PREINIT:
-	void (*scr_msg) __P((SCR *, mtype_t, char *, size_t));
-	int rval;
-	char *file;
-	SCR *nsp;
-
-	CODE:
-	file = (items == 1) ? NULL : (char *)SvPV(ST(1),PL_na);
-	INITMESSAGE;
-	rval = api_edit(screen, file, &nsp, ix);
-	ENDMESSAGE;
-	
-	RETVAL = ix ? nsp : screen;
-
-	OUTPUT:
-	RETVAL
-
-# XS_VI_fscreen --
-#	Return the screen id associated with file name.
-#
-# Perl Command: VI::FindScreen
-# Usage: VI::FindScreen file
-
-VI
-FindScreen(file)
-	char *file
-
-	PREINIT:
-	SCR *fsp;
-	CODE:
-	RETVAL = api_fscreen(0, file);
-
-# XS_VI_aline --
-#	-- Append the string text after the line in lineNumber.
-#
-# Perl Command: VI::AppendLine
-# Usage: VI::AppendLine screenId lineNumber text
-
-void
-AppendLine(screen, linenumber, text)
-	VI screen
-	int linenumber
-	char *text
-
-	PREINIT:
-	void (*scr_msg) __P((SCR *, mtype_t, char *, size_t));
-	int rval;
-	STRLEN length;
-
-	CODE:
-	SvPV(ST(2), length);
-	INITMESSAGE;
-	rval = api_aline(screen, linenumber, text, length);
-	ENDMESSAGE;
-
-# XS_VI_dline --
-#	Delete lineNum.
-#
-# Perl Command: VI::DelLine
-# Usage: VI::DelLine screenId lineNum
-
-void 
-DelLine(screen, linenumber)
-	VI screen
-	int linenumber
-
-	PREINIT:
-	void (*scr_msg) __P((SCR *, mtype_t, char *, size_t));
-	int rval;
-
-	CODE:
-	INITMESSAGE;
-	rval = api_dline(screen, (recno_t)linenumber);
-	ENDMESSAGE;
-
-# XS_VI_gline --
-#	Return lineNumber.
-#
-# Perl Command: VI::GetLine
-# Usage: VI::GetLine screenId lineNumber
-
-char *
-GetLine(screen, linenumber)
-	VI screen
-	int linenumber
-
-	PREINIT:
-	size_t len;
-	void (*scr_msg) __P((SCR *, mtype_t, char *, size_t));
-	int rval;
-	char *line, *p;
-
-	PPCODE:
-	INITMESSAGE;
-	rval = api_gline(screen, (recno_t)linenumber, &p, &len);
-	ENDMESSAGE;
-
-	EXTEND(sp,1);
-        PUSHs(sv_2mortal(newSVpv(p, len)));
-
-# XS_VI_sline --
-#	Set lineNumber to the text supplied.
-#
-# Perl Command: VI::SetLine
-# Usage: VI::SetLine screenId lineNumber text
-
-void
-SetLine(screen, linenumber, text)
-	VI screen
-	int linenumber
-	char *text
-
-	PREINIT:
-	void (*scr_msg) __P((SCR *, mtype_t, char *, size_t));
-	int rval;
-	STRLEN length;
-
-	CODE:
-	SvPV(ST(2), length);
-	INITMESSAGE;
-	rval = api_sline(screen, linenumber, text, length);
-	ENDMESSAGE;
-
-# XS_VI_iline --
-#	Insert the string text before the line in lineNumber.
-#
-# Perl Command: VI::InsertLine
-# Usage: VI::InsertLine screenId lineNumber text
-
-void
-InsertLine(screen, linenumber, text)
-	VI screen
-	int linenumber
-	char *text
-
-	PREINIT:
-	void (*scr_msg) __P((SCR *, mtype_t, char *, size_t));
-	int rval;
-	STRLEN length;
-
-	CODE:
-	SvPV(ST(2), length);
-	INITMESSAGE;
-	rval = api_iline(screen, linenumber, text, length);
-	ENDMESSAGE;
-
-# XS_VI_lline --
-#	Return the last line in the screen.
-#
-# Perl Command: VI::LastLine
-# Usage: VI::LastLine screenId
-
-int 
-LastLine(screen)
-	VI screen
-
-	PREINIT:
-	recno_t last;
-	void (*scr_msg) __P((SCR *, mtype_t, char *, size_t));
-	int rval;
-
-	CODE:
-	INITMESSAGE;
-	rval = api_lline(screen, &last);
-	ENDMESSAGE;
-	RETVAL=last;
-
-	OUTPUT:
-	RETVAL
-
-# XS_VI_getmark --
-#	Return the mark's cursor position as a list with two elements.
-#	{line, column}.
-#
-# Perl Command: VI::GetMark
-# Usage: VI::GetMark screenId mark
-
-void
-GetMark(screen, mark)
-	VI screen
-	char mark
-
-	PREINIT:
-	struct _mark cursor;
-	void (*scr_msg) __P((SCR *, mtype_t, char *, size_t));
-	int rval;
-
-	PPCODE:
-	INITMESSAGE;
-	rval = api_getmark(screen, (int)mark, &cursor);
-	ENDMESSAGE;
-
-	EXTEND(sp,2);
-        PUSHs(sv_2mortal(newSViv(cursor.lno)));
-        PUSHs(sv_2mortal(newSViv(cursor.cno)));
-
-# XS_VI_setmark --
-#	Set the mark to the line and column numbers supplied.
-#
-# Perl Command: VI::SetMark
-# Usage: VI::SetMark screenId mark line column
-
-void
-SetMark(screen, mark, line, column)
-	VI screen
-	char mark
-	int line
-	int column
-
-	PREINIT:
-	struct _mark cursor;
-	void (*scr_msg) __P((SCR *, mtype_t, char *, size_t));
-	int rval;
-
-	CODE:
-	INITMESSAGE;
-	cursor.lno = line;
-	cursor.cno = column;
-	rval = api_setmark(screen, (int)mark, &cursor);
-	ENDMESSAGE;
-
-# XS_VI_getcursor --
-#	Return the current cursor position as a list with two elements.
-#	{line, column}.
-#
-# Perl Command: VI::GetCursor
-# Usage: VI::GetCursor screenId
-
-void
-GetCursor(screen)
-	VI screen
-
-	PREINIT:
-	struct _mark cursor;
-	void (*scr_msg) __P((SCR *, mtype_t, char *, size_t));
-	int rval;
-
-	PPCODE:
-	INITMESSAGE;
-	rval = api_getcursor(screen, &cursor);
-	ENDMESSAGE;
-
-	EXTEND(sp,2);
-        PUSHs(sv_2mortal(newSViv(cursor.lno)));
-        PUSHs(sv_2mortal(newSViv(cursor.cno)));
-
-# XS_VI_setcursor --
-#	Set the cursor to the line and column numbers supplied.
-#
-# Perl Command: VI::SetCursor
-# Usage: VI::SetCursor screenId line column
-
-void
-SetCursor(screen, line, column)
-	VI screen
-	int line
-	int column
-
-	PREINIT:
-	struct _mark cursor;
-	void (*scr_msg) __P((SCR *, mtype_t, char *, size_t));
-	int rval;
-
-	CODE:
-	INITMESSAGE;
-	cursor.lno = line;
-	cursor.cno = column;
-	rval = api_setcursor(screen, &cursor);
-	ENDMESSAGE;
-
-# XS_VI_swscreen --
-#	Change the current focus to screen.
-#
-# Perl Command: VI::SwitchScreen
-# Usage: VI::SwitchScreen screenId screenId
-
-void
-SwitchScreen(screenFrom, screenTo)
-	VI screenFrom
-	VI screenTo
-
-	PREINIT:
-	void (*scr_msg) __P((SCR *, mtype_t, char *, size_t));
-	int rval;
-
-	CODE:
-	INITMESSAGE;
-	rval = api_swscreen(screenFrom, screenTo);
-	ENDMESSAGE;
-
-# XS_VI_map --
-#	Associate a key with a perl procedure.
-#
-# Perl Command: VI::MapKey
-# Usage: VI::MapKey screenId key perlproc
-
-void
-MapKey(screen, key, perlproc)
-	VI screen
-	char *key
-	SV *perlproc
-
-	PREINIT:
-	void (*scr_msg) __P((SCR *, mtype_t, char *, size_t));
-	int rval;
-	int length;
-	char *command;
-	SV *svc;
-
-	CODE:
-	INITMESSAGE;
-	svc = sv_2mortal(newSVpv(":perl ", 6));
-	sv_catsv(svc, perlproc);
-	command = SvPV(svc, length);
-	rval = api_map(screen, key, command, length);
-	ENDMESSAGE;
-
-# XS_VI_unmap --
-#	Unmap a key.
-#
-# Perl Command: VI::UnmapKey
-# Usage: VI::UnmmapKey screenId key
-
-void
-UnmapKey(screen, key)
-	VI screen
-	char *key
-
-	PREINIT:
-	void (*scr_msg) __P((SCR *, mtype_t, char *, size_t));
-	int rval;
-
-	CODE:
-	INITMESSAGE;
-	rval = api_unmap(screen, key);
-	ENDMESSAGE;
-
-# XS_VI_opts_set --
-#	Set an option.
-#
-# Perl Command: VI::SetOpt
-# Usage: VI::SetOpt screenId setting
-
-void
-SetOpt(screen, setting)
-	VI screen
-	char *setting
-
-	PREINIT:
-	void (*scr_msg) __P((SCR *, mtype_t, char *, size_t));
-	int rval;
-	SV *svc;
-
-	CODE:
-	INITMESSAGE;
-	svc = sv_2mortal(newSVpv(":set ", 5));
-	sv_catpv(svc, setting);
-	rval = api_run_str(screen, SvPV(svc, PL_na));
-	ENDMESSAGE;
-
-# XS_VI_opts_get --
-#	Return the value of an option.
-#	
-# Perl Command: VI::GetOpt
-# Usage: VI::GetOpt screenId option
-
-void
-GetOpt(screen, option)
-	VI screen
-	char *option
-
-	PREINIT:
-	void (*scr_msg) __P((SCR *, mtype_t, char *, size_t));
-	int rval;
-	char *value;
-
-	PPCODE:
-	INITMESSAGE;
-	rval = api_opts_get(screen, option, &value, NULL);
-	ENDMESSAGE;
-
-	EXTEND(SP,1);
-	PUSHs(sv_2mortal(newSVpv(value, 0)));
-	free(value);
-
-# XS_VI_run --
-#	Run the ex command cmd.
-#
-# Perl Command: VI::Run
-# Usage: VI::Run screenId cmd
-
-void
-Run(screen, command)
-	VI screen
-	char *command;
-
-	PREINIT:
-	void (*scr_msg) __P((SCR *, mtype_t, char *, size_t));
-	int rval;
-
-	CODE:
-	INITMESSAGE;
-	rval = api_run_str(screen, command);
-	ENDMESSAGE;
-
-void 
-DESTROY(screen)
-	VI screen
-
-	CODE:
-	screen->perl_private = 0;
-
-void
-Warn(warning)
-	char *warning;
-
-	PREINIT:
-	int i;
-	CODE:
-	sv_catpv(GvSV(PL_errgv),warning);
-
-#define TIED(package) \
-	sv_magic((SV *) (hv = \
-	    (HV *)sv_2mortal((SV *)newHV())), \
-		sv_setref_pv(sv_newmortal(), package, \
-			newVIrv(newSV(0), screen)),\
-		'P', Nullch, 0);\
-	RETVAL = newRV((SV *)hv)
-
-SV *
-Opt(screen)
-	VI screen;
-	PREINIT:
-	HV *hv;
-	CODE:
-	TIED("VI::OPT");
-	OUTPUT:
-	RETVAL
-
-SV *
-Map(screen)
-	VI screen;
-	PREINIT:
-	HV *hv;
-	CODE:
-	TIED("VI::MAP");
-	OUTPUT:
-	RETVAL
-
-SV *
-Mark(screen)
-	VI screen
-	PREINIT:
-	HV *hv;
-	CODE:
-	TIED("VI::MARK");
-	OUTPUT:
-	RETVAL
-
-MODULE = VI	PACKAGE = VI::OPT
-
-void 
-DESTROY(screen)
-	VI::OPT screen
-
-	CODE:
-	# typemap did all the checking
-	SvREFCNT_dec((SV*)SvIV((SV*)SvRV(ST(0))));
-
-void
-FETCH(screen, key)
-	VI::OPT screen
-	char *key
-
-	PREINIT:
-	void (*scr_msg) __P((SCR *, mtype_t, char *, size_t));
-	int rval;
-	char *value;
-	int boolvalue;
-
-	PPCODE:
-	INITMESSAGE;
-	rval = api_opts_get(screen, key, &value, &boolvalue);
-	if (!rval) {
-		EXTEND(SP,1);
-		PUSHs(sv_2mortal((boolvalue == -1) ? newSVpv(value, 0)
-						   : newSViv(boolvalue)));
-		free(value);
-	} else ST(0) = &PL_sv_undef;
-	rval = 0;
-	ENDMESSAGE;
-
-void
-STORE(screen, key, value)
-	VI::OPT	screen
-	char	*key
-	SV	*value
-
-	PREINIT:
-	void (*scr_msg) __P((SCR *, mtype_t, char *, size_t));
-	int rval;
-
-	CODE:
-	INITMESSAGE;
-	rval = api_opts_set(screen, key, SvPV(value, PL_na), SvIV(value), 
-                                         SvTRUEx(value));
-	ENDMESSAGE;
-
-MODULE = VI	PACKAGE = VI::MAP
-
-void 
-DESTROY(screen)
-	VI::MAP screen
-
-	CODE:
-	# typemap did all the checking
-	SvREFCNT_dec((SV*)SvIV((SV*)SvRV(ST(0))));
-
-void
-STORE(screen, key, perlproc)
-	VI::MAP screen
-	char *key
-	SV *perlproc
-
-	PREINIT:
-	void (*scr_msg) __P((SCR *, mtype_t, char *, size_t));
-	int rval;
-	int length;
-	char *command;
-	SV *svc;
-
-	CODE:
-	INITMESSAGE;
-	svc = sv_2mortal(newSVpv(":perl ", 6));
-	sv_catsv(svc, perlproc);
-	command = SvPV(svc, length);
-	rval = api_map(screen, key, command, length);
-	ENDMESSAGE;
-
-void
-DELETE(screen, key)
-	VI::MAP screen
-	char *key
-
-	PREINIT:
-	void (*scr_msg) __P((SCR *, mtype_t, char *, size_t));
-	int rval;
-
-	CODE:
-	INITMESSAGE;
-	rval = api_unmap(screen, key);
-	ENDMESSAGE;
-
-MODULE = VI	PACKAGE = VI::MARK
-
-void 
-DESTROY(screen)
-	VI::MARK screen
-
-	CODE:
-	# typemap did all the checking
-	SvREFCNT_dec((SV*)SvIV((SV*)SvRV(ST(0))));
-
-AV *
-FETCH(screen, mark)
-	VI::MARK screen
-	char mark
-
-	PREINIT:
-	struct _mark cursor;
-	void (*scr_msg) __P((SCR *, mtype_t, char *, size_t));
-	int rval;
-
-	CODE:
-	INITMESSAGE;
-	rval = api_getmark(screen, (int)mark, &cursor);
-	ENDMESSAGE;
-	RETVAL = newAV();
-	av_push(RETVAL, newSViv(cursor.lno));
-	av_push(RETVAL, newSViv(cursor.cno));
-
-	OUTPUT:
-	RETVAL
-
-void
-STORE(screen, mark, pos)
-	VI::MARK screen
-	char mark
-	AVREF pos
-
-	PREINIT:
-	struct _mark cursor;
-	void (*scr_msg) __P((SCR *, mtype_t, char *, size_t));
-	int rval;
-
-	CODE:
-	if (av_len(pos) < 1) 
-	    croak("cursor position needs 2 elements");
-	INITMESSAGE;
-	cursor.lno = SvIV(*av_fetch(pos, 0, 0));
-	cursor.cno = SvIV(*av_fetch(pos, 1, 0));
-	rval = api_setmark(screen, (int)mark, &cursor);
-	ENDMESSAGE;
-
-void
-FIRSTKEY(screen, ...)
-	VI::MARK screen
-
-	ALIAS:
-	NEXTKEY = 1
-	
-	PROTOTYPE: $;$
-
-	PREINIT:
-	struct _mark cursor;
-	void (*scr_msg) __P((SCR *, mtype_t, char *, size_t));
-	int next;
-	char key[] = {0, 0};
-
-	PPCODE:
-	if (items == 2) {
-		next = 1;
-		*key = *(char *)SvPV(ST(1),PL_na);
-	} else next = 0;
-	if (api_nextmark(screen, next, key) != 1) {
-		EXTEND(sp, 1);
-        	PUSHs(sv_2mortal(newSVpv(key, 1)));
-	} else ST(0) = &PL_sv_undef;