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, 21 insertions, 9 deletions

diff --git a/lib/libedit/hist.h b/lib/libedit/hist.h
index 4ddedcc59b3d..1cd7d9df397f 100644
--- a/lib/libedit/hist.h
+++ b/lib/libedit/hist.h
@@ -1,3 +1,5 @@
+/*	$NetBSD: hist.h,v 1.14 2014/05/11 01:05:17 christos Exp $	*/
+
 /*-
  * Copyright (c) 1992, 1993
  *	The Regents of the University of California.  All rights reserved.
@@ -30,7 +32,6 @@
  * SUCH DAMAGE.
  *
  *	@(#)hist.h	8.1 (Berkeley) 6/4/93
- *	$NetBSD: hist.h,v 1.10 2003/08/07 16:44:31 agc Exp $
  * $FreeBSD$
  */
 
@@ -42,21 +43,29 @@
 
 #include "histedit.h"
 
-typedef int (*hist_fun_t)(ptr_t, HistEvent *, int, ...);
+typedef int (*hist_fun_t)(void *, TYPE(HistEvent) *, int, ...);
 
 typedef struct el_history_t {
-	char		*buf;		/* The history buffer		*/
+	Char		*buf;		/* The history buffer		*/
 	size_t		sz;		/* Size of history buffer	*/
-	char		*last;		/* The last character		*/
+	Char		*last;		/* The last character		*/
 	int		 eventno;	/* Event we are looking for	*/
-	ptr_t		 ref;		/* Argument for history fcns	*/
+	void *		 ref;		/* Argument for history fcns	*/
 	hist_fun_t	 fun;		/* Event access			*/
-	HistEvent	 ev;		/* Event cookie			*/
+	TYPE(HistEvent)	 ev;		/* Event cookie			*/
 } el_history_t;
 
-#define	HIST_FUN(el, fn, arg)	\
+#define	HIST_FUN_INTERNAL(el, fn, arg)	\
     ((((*(el)->el_history.fun) ((el)->el_history.ref, &(el)->el_history.ev, \
 	fn, arg)) == -1) ? NULL : (el)->el_history.ev.str)
+#ifdef WIDECHAR
+#define HIST_FUN(el, fn, arg) \
+    (((el)->el_flags & NARROW_HISTORY) ? hist_convert(el, fn, arg) : \
+	HIST_FUN_INTERNAL(el, fn, arg))
+#else
+#define HIST_FUN(el, fn, arg) HIST_FUN_INTERNAL(el, fn, arg)
+#endif
+
 
 #define	HIST_NEXT(el)		HIST_FUN(el, H_NEXT, NULL)
 #define	HIST_FIRST(el)		HIST_FUN(el, H_FIRST, NULL)
@@ -70,8 +79,11 @@ typedef struct el_history_t {
 protected int		hist_init(EditLine *);
 protected void		hist_end(EditLine *);
 protected el_action_t	hist_get(EditLine *);
-protected int		hist_set(EditLine *, hist_fun_t, ptr_t);
-protected int		hist_command(EditLine *, int, const char **);
+protected int		hist_set(EditLine *, hist_fun_t, void *);
+protected int		hist_command(EditLine *, int, const Char **);
 protected int		hist_enlargebuf(EditLine *, size_t, size_t);
+#ifdef WIDECHAR
+protected wchar_t 	*hist_convert(EditLine *, int, void *);
+#endif
 
 #endif /* _h_el_hist */