Synchronize libedit with NetBSD and activate UTF-8 support [1]

Differences with NetBSD
Reapply our local patches on top of it
Fix Unicode environement detection
Fix reading a line in unicode environment.
It allows /bin/sh to works in UTF-8 envs

Differential Revision:	https://reviews.freebsd.org/D1455
Reviewed by:	jilles, pfg
Obtained from:	NetBSD [1]
MFC after:	1 month
Relnotes:	yes

1 files changed, 31 insertions, 22 deletions

diff --git a/lib/libedit/chared.h b/lib/libedit/chared.h
index 153fceb..909adac 100644
--- a/lib/libedit/chared.h
+++ b/lib/libedit/chared.h
@@ -1,3 +1,5 @@
+/*	$NetBSD: chared.h,v 1.22 2014/06/18 18:12:28 christos Exp $	*/
+
 /*-
  * Copyright (c) 1992, 1993
  *	The Regents of the University of California.  All rights reserved.
@@ -30,7 +32,6 @@
  * SUCH DAMAGE.
  *
  *	@(#)chared.h	8.1 (Berkeley) 6/4/93
- *	$NetBSD: chared.h,v 1.18 2009/02/15 21:55:23 christos Exp $
  * $FreeBSD$
  */
 
@@ -63,7 +64,7 @@
 typedef struct c_macro_t {
 	int	  level;
 	int	  offset;
-	char	**macro;
+	Char	**macro;
 } c_macro_t;
 
 /*
@@ -72,16 +73,16 @@ typedef struct c_macro_t {
 typedef struct c_undo_t {
 	ssize_t	 len;			/* length of saved line */
 	int	 cursor;		/* position of saved cursor */
-	char	*buf;			/* full saved text */
+	Char	*buf;			/* full saved text */
 } c_undo_t;
 
 /* redo for vi */
 typedef struct c_redo_t {
-	char	*buf;			/* redo insert key sequence */
-	char	*pos;
-	char	*lim;
+	Char	*buf;			/* redo insert key sequence */
+	Char	*pos;
+	Char	*lim;
 	el_action_t	cmd;		/* command to redo */
-	char	ch;			/* char that invoked it */
+	Char	ch;			/* char that invoked it */
 	int	count;
 	int	action;			/* from cv_action() */
 } c_redo_t;
@@ -91,18 +92,21 @@ typedef struct c_redo_t {
  */
 typedef struct c_vcmd_t {
 	int	 action;
-	char	*pos;
+	Char	*pos;
 } c_vcmd_t;
 
 /*
  * Kill buffer for emacs
  */
 typedef struct c_kill_t {
-	char	*buf;
-	char	*last;
-	char	*mark;
+	Char	*buf;
+	Char	*last;
+	Char	*mark;
 } c_kill_t;
 
+typedef void (*el_zfunc_t)(EditLine *, void *);
+typedef const char *(*el_afunc_t)(void *, const char *);
+
 /*
  * Note that we use both data structures because the user can bind
  * commands from both editors!
@@ -113,13 +117,16 @@ typedef struct el_chared_t {
 	c_redo_t	c_redo;
 	c_vcmd_t	c_vcmd;
 	c_macro_t	c_macro;
+	el_zfunc_t	c_resizefun;
+	el_afunc_t	c_aliasfun;
+	void *		c_resizearg;
+	void *		c_aliasarg;
 } el_chared_t;
 
 
 #define	STRQQ		"\"\""
 
 #define	isglob(a)	(strchr("*[]?", (a)) != NULL)
-#define	isword(a)	(isprint(a))
 
 #define	NOP		0x00
 #define	DELETE		0x01
@@ -140,27 +147,29 @@ typedef struct el_chared_t {
 #include "fcns.h"
 
 
-protected int	 cv__isword(int);
-protected int	 cv__isWord(int);
+protected int	 cv__isword(Int);
+protected int	 cv__isWord(Int);
 protected void	 cv_delfini(EditLine *);
-protected char	*cv__endword(char *, char *, int, int (*)(int));
-protected int	 ce__isword(int);
+protected Char	*cv__endword(Char *, Char *, int, int (*)(Int));
+protected int	 ce__isword(Int);
 protected void	 cv_undo(EditLine *);
-protected void	 cv_yank(EditLine *, const char *, int);
-protected char	*cv_next_word(EditLine*, char *, char *, int, int (*)(int));
-protected char	*cv_prev_word(char *, char *, int, int (*)(int));
-protected char	*c__next_word(char *, char *, int, int (*)(int));
-protected char	*c__prev_word(char *, char *, int, int (*)(int));
+protected void	 cv_yank(EditLine *, const Char *, int);
+protected Char	*cv_next_word(EditLine*, Char *, Char *, int, int (*)(Int));
+protected Char	*cv_prev_word(Char *, Char *, int, int (*)(Int));
+protected Char	*c__next_word(Char *, Char *, int, int (*)(Int));
+protected Char	*c__prev_word(Char *, Char *, int, int (*)(Int));
 protected void	 c_insert(EditLine *, int);
 protected void	 c_delbefore(EditLine *, int);
 protected void	 c_delbefore1(EditLine *);
 protected void	 c_delafter(EditLine *, int);
 protected void	 c_delafter1(EditLine *);
-protected int	 c_gets(EditLine *, char *, const char *);
+protected int	 c_gets(EditLine *, Char *, const Char *);
 protected int	 c_hpos(EditLine *);
 
 protected int	 ch_init(EditLine *);
 protected void	 ch_reset(EditLine *, int);
+protected int	 ch_resizefun(EditLine *, el_zfunc_t, void *);
+protected int	 ch_aliasfun(EditLine *, el_afunc_t, void *);
 protected int	 ch_enlargebufs(EditLine *, size_t);
 protected void	 ch_end(EditLine *);