/*	$NetBSD:?chared.cv?1.36?2011/10/23?17:37:55?christos?Exp?$	*/

/*-
?*?Copyright?（c）?1992?1993
?*	The?Regents?of?the?University?of?California.??All?rights?reserved.
?*
?*?This?code?is?derived?from?software?contributed?to?Berkeley?by
?*?Christos?Zoulas?of?Cornell?University.
?*
?*?Redistribution?and?use?in?source?and?binary?forms?with?or?without
?*?modification?are?permitted?provided?that?the?following?conditions
?*?are?met:
?*?1.?Redistributions?of?source?code?must?retain?the?above?copyright
?*????notice?this?list?of?conditions?and?the?following?disclaimer.
?*?2.?Redistributions?in?binary?form?must?reproduce?the?above?copyright
?*????notice?this?list?of?conditions?and?the?following?disclaimer?in?the
?*????documentation?and/or?other?materials?provided?with?the?distribution.
?*?3.?Neither?the?name?of?the?University?nor?the?names?of?its?contributors
?*????may?be?used?to?endorse?or?promote?products?derived?from?this?software
?*????without?specific?prior?written?permission.
?*
?*?THIS?SOFTWARE?IS?PROVIDED?BY?THE?REGENTS?AND?CONTRIBUTORS?‘‘AS?IS‘‘?AND
?*?ANY?EXPRESS?OR?IMPLIED?WARRANTIES?INCLUDING?BUT?NOT?LIMITED?TO?THE
?*?IMPLIED?WARRANTIES?OF?MERCHANTABILITY?AND?FITNESS?FOR?A?PARTICULAR?PURPOSE
?*?ARE?DISCLAIMED.??IN?NO?EVENT?SHALL?THE?REGENTS?OR?CONTRIBUTORS?BE?LIABLE
?*?FOR?ANY?DIRECT?INDIRECT?INCIDENTAL?SPECIAL?EXEMPLARY?OR?CONSEQUENTIAL
?*?DAMAGES?（INCLUDING?BUT?NOT?LIMITED?TO?PROCUREMENT?OF?SUBSTITUTE?GOODS
?*?OR?SERVICES;?LOSS?OF?USE?DATA?OR?PROFITS;?OR?BUSINESS?INTERRUPTION）
?*?HOWEVER?CAUSED?AND?ON?ANY?THEORY?OF?LIABILITY?WHETHER?IN?CONTRACT?STRICT
?*?LIABILITY?OR?TORT?（INCLUDING?NEGLIGENCE?OR?OTHERWISE）?ARISING?IN?ANY?WAY
?*?OUT?OF?THE?USE?OF?THIS?SOFTWARE?EVEN?IF?ADVISED?OF?THE?POSSIBILITY?OF
?*?SUCH?DAMAGE.
?*/

#include?“config.h“
#if?!defined（lint）?&&?!defined（SCCSID）
#if?0
static?char?sccsid[]?=?“@（#）chared.c	8.1?（Berkeley）?6/4/93“;
#else
#endif
#endif?/*?not?lint?&&?not?SCCSID?*/

/*
?*?chared.c:?Character?editor?utilities
?*/
#include?
#include?“el.h“

private?void?ch__clearmacro?（EditLine?*）;

/*?value?to?leave?unused?in?line?buffer?*/
#define	EL_LEAVE	2

/*?cv_undo（）:
?*	Handle?state?for?the?vi?undo?command
?*/
protected?void
cv_undo（EditLine?*el）
{
	c_undo_t?*vu?=?&el->el_chared.c_undo;
	c_redo_t?*r?=?&el->el_chared.c_redo;
	size_t?size;

	/*?Save?entire?line?for?undo?*/
	size?=?（size_t）（el->el_line.lastchar?-?el->el_line.buffer）;
	vu->len?=?（ssize_t）size;
	vu->cursor?=?（int）（el->el_line.cursor?-?el->el_line.buffer）;
	（void）memcpy（vu->buf?el->el_line.buffer?size?*?sizeof（*vu->buf））;

	/*?save?command?info?for?redo?*/
	r->count?=?el->el_state.doingarg???el->el_state.argument?:?0;
	r->action?=?el->el_chared.c_vcmd.action;
	r->pos?=?r->buf;
	r->cmd?=?el->el_state.thiscmd;
	r->ch?=?el->el_state.thisch;
}

/*?cv_yank（）:
?*	Save?yank/delete?data?for?paste
?*/
protected?void
cv_yank（EditLine?*el?const?Char?*ptr?int?size）
{
	c_kill_t?*k?=?&el->el_chared.c_kill;

	（void）memcpy（k->buf?ptr?（size_t）size?