diff --git a/include/editline/readline.h b/include/editline/readline.h
new file mode 100644
index 0000000..932febb
--- /dev/null
+++ b/include/editline/readline.h
@@ -0,0 +1,224 @@
+/*	$NetBSD: readline.h,v 1.34 2013/05/28 00:10:34 christos Exp $	*/
+
+/*-
+ * Copyright (c) 1997 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to The NetBSD Foundation
+ * by Jaromir Dolecek.
+ *
+ * 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
+ */
+#ifndef _READLINE_H_
+#define _READLINE_H_
+
+#include <sys/types.h>
+#include <stdio.h>
+
+/* list of readline stuff supported by editline library's readline wrapper */
+
+/* typedefs */
+typedef int	  Function(const char *, int);
+typedef void	  VFunction(void);
+typedef void	  VCPFunction(char *);
+typedef char	 *CPFunction(const char *, int);
+typedef char	**CPPFunction(const char *, int, int);
+typedef char     *rl_compentry_func_t(const char *, int);
+typedef int	  rl_command_func_t(int, int);
+
+/* only supports length */
+typedef struct {
+	int length;
+} HISTORY_STATE;
+
+typedef void *histdata_t;
+
+typedef struct _hist_entry {
+	const char	*line;
+	histdata_t 	 data;
+} HIST_ENTRY;
+
+typedef struct _keymap_entry {
+	char type;
+#define ISFUNC	0
+#define ISKMAP	1
+#define ISMACR	2
+	Function *function;
+} KEYMAP_ENTRY;
+
+#define KEYMAP_SIZE	256
+
+typedef KEYMAP_ENTRY KEYMAP_ENTRY_ARRAY[KEYMAP_SIZE];
+typedef KEYMAP_ENTRY *Keymap;
+
+#define control_character_threshold	0x20
+#define control_character_bit		0x40
+
+#ifndef CTRL
+#include <sys/ioctl.h>
+#if !defined(__sun) && !defined(__hpux) && !defined(_AIX)
+#include <sys/ttydefaults.h>
+#endif
+#ifndef CTRL
+#define CTRL(c)		((c) & 037)
+#endif
+#endif
+#ifndef UNCTRL
+#define UNCTRL(c)	(((c) - 'a' + 'A')|control_character_bit)
+#endif
+
+#define RUBOUT		0x7f
+#define ABORT_CHAR	CTRL('G')
+#define RL_READLINE_VERSION 	0x0402
+#define RL_PROMPT_START_IGNORE	'\1'
+#define RL_PROMPT_END_IGNORE	'\2'
+
+/* global variables used by readline enabled applications */
+#ifdef __cplusplus
+extern "C" {
+#endif
+extern const char	*rl_library_version;
+extern int 		rl_readline_version; 
+extern char		*rl_readline_name;
+extern FILE		*rl_instream;
+extern FILE		*rl_outstream;
+extern char		*rl_line_buffer;
+extern int		 rl_point, rl_end;
+extern int		 history_base, history_length;
+extern int		 max_input_history;
+extern char		*rl_basic_word_break_characters;
+extern char		*rl_completer_word_break_characters;
+extern char		*rl_completer_quote_characters;
+extern Function		*rl_completion_entry_function;
+extern char		*(*rl_completion_word_break_hook)(void);
+extern CPPFunction	*rl_attempted_completion_function;
+extern int		 rl_attempted_completion_over;
+extern int		rl_completion_type;
+extern int		rl_completion_query_items;
+extern char		*rl_special_prefixes;
+extern int		rl_completion_append_character;
+extern int		rl_inhibit_completion;
+extern Function		*rl_pre_input_hook;
+extern Function		*rl_startup_hook;
+extern char		*rl_terminal_name;
+extern int		rl_already_prompted;
+extern char		*rl_prompt;
+/*
+ * The following is not implemented
+ */
+extern int		rl_catch_signals;
+extern int		rl_catch_sigwinch;
+extern KEYMAP_ENTRY_ARRAY emacs_standard_keymap,
+			emacs_meta_keymap,
+			emacs_ctlx_keymap;
+extern int		rl_filename_completion_desired;
+extern int		rl_ignore_completion_duplicates;
+extern int		(*rl_getc_function)(FILE *);
+extern VFunction	*rl_redisplay_function;
+extern VFunction	*rl_completion_display_matches_hook;
+extern VFunction	*rl_prep_term_function;
+extern VFunction	*rl_deprep_term_function;
+extern int		readline_echoing_p;
+extern int		_rl_print_completions_horizontally;
+
+/* supported functions */
+char		*readline(const char *);
+int		 rl_initialize(void);
+
+void		 using_history(void);
+int		 add_history(const char *);
+void		 clear_history(void);
+void		 stifle_history(int);
+int		 unstifle_history(void);
+int		 history_is_stifled(void);
+int		 where_history(void);
+HIST_ENTRY	*current_history(void);
+HIST_ENTRY	*history_get(int);
+HIST_ENTRY	*remove_history(int);
+HIST_ENTRY	*replace_history_entry(int, const char *, histdata_t);
+int		 history_total_bytes(void);
+int		 history_set_pos(int);
+HIST_ENTRY	*previous_history(void);
+HIST_ENTRY	*next_history(void);
+int		 history_search(const char *, int);
+int		 history_search_prefix(const char *, int);
+int		 history_search_pos(const char *, int, int);
+int		 read_history(const char *);
+int		 write_history(const char *);
+int		 history_truncate_file (const char *, int);
+int		 history_expand(char *, char **);
+char	       **history_tokenize(const char *);
+const char	*get_history_event(const char *, int *, int);
+char		*history_arg_extract(int, int, const char *);
+
+char		*tilde_expand(char *);
+char		*filename_completion_function(const char *, int);
+char		*username_completion_function(const char *, int);
+int		 rl_complete(int, int);
+int		 rl_read_key(void);
+char	       **completion_matches(const char *, CPFunction *);
+void		 rl_display_match_list(char **, int, int);
+
+int		 rl_insert(int, int);
+int		 rl_insert_text(const char *);
+void		 rl_reset_terminal(const char *);
+int		 rl_bind_key(int, rl_command_func_t *);
+int		 rl_newline(int, int);
+void		 rl_callback_read_char(void);
+void		 rl_callback_handler_install(const char *, VCPFunction *);
+void		 rl_callback_handler_remove(void);
+void		 rl_redisplay(void);
+int		 rl_get_previous_history(int, int);
+void		 rl_prep_terminal(int);
+void		 rl_deprep_terminal(void);
+int		 rl_read_init_file(const char *);
+int		 rl_parse_and_bind(const char *);
+int		 rl_variable_bind(const char *, const char *);
+void		 rl_stuff_char(int);
+int		 rl_add_defun(const char *, Function *, int);
+HISTORY_STATE	*history_get_history_state(void);
+void		 rl_get_screen_size(int *, int *);
+void		 rl_set_screen_size(int, int);
+char 		*rl_filename_completion_function (const char *, int);
+int		 _rl_abort_internal(void);
+int		 _rl_qsort_string_compare(char **, char **);
+char 	       **rl_completion_matches(const char *, rl_compentry_func_t *);
+void		 rl_forced_update_display(void);
+int		 rl_set_prompt(const char *);
+int		 rl_on_new_line(void);
+
+/*
+ * The following are not implemented
+ */
+int		 rl_kill_text(int, int);
+Keymap		 rl_get_keymap(void);
+void		 rl_set_keymap(Keymap);
+Keymap		 rl_make_bare_keymap(void);
+int		 rl_generic_bind(int, const char *, const char *, Keymap);
+int		 rl_bind_key_in_map(int, rl_command_func_t *, Keymap);
+void		 rl_cleanup_after_signal(void);
+void		 rl_free_line_state(void);
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _READLINE_H_ */
diff --git a/include/histedit.h b/include/histedit.h
new file mode 100644
index 0000000..73e8375
--- /dev/null
+++ b/include/histedit.h
@@ -0,0 +1,320 @@
+/*	$NetBSD: histedit.h,v 1.51 2013/07/12 17:48:29 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.
+ *
+ *	@(#)histedit.h	8.2 (Berkeley) 1/3/94
+ */
+
+/*
+ * histedit.h: Line editor and history interface.
+ */
+#ifndef _HISTEDIT_H_
+#define	_HISTEDIT_H_
+
+#define	LIBEDIT_MAJOR 2
+#define	LIBEDIT_MINOR 11
+
+#include <sys/types.h>
+#include <stdio.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*
+ * ==== Editing ====
+ */
+
+typedef struct editline EditLine;
+
+/*
+ * For user-defined function interface
+ */
+typedef struct lineinfo {
+	const char	*buffer;
+	const char	*cursor;
+	const char	*lastchar;
+} LineInfo;
+
+/*
+ * EditLine editor function return codes.
+ * For user-defined function interface
+ */
+#define	CC_NORM		0
+#define	CC_NEWLINE	1
+#define	CC_EOF		2
+#define	CC_ARGHACK	3
+#define	CC_REFRESH	4
+#define	CC_CURSOR	5
+#define	CC_ERROR	6
+#define	CC_FATAL	7
+#define	CC_REDISPLAY	8
+#define	CC_REFRESH_BEEP	9
+
+/*
+ * Initialization, cleanup, and resetting
+ */
+EditLine	*el_init(const char *, FILE *, FILE *, FILE *);
+EditLine	*el_init_fd(const char *, FILE *, FILE *, FILE *,
+    int, int, int);
+void		 el_end(EditLine *);
+void		 el_reset(EditLine *);
+
+/*
+ * Get a line, a character or push a string back in the input queue
+ */
+const char	*el_gets(EditLine *, int *);
+int		 el_getc(EditLine *, char *);
+void		 el_push(EditLine *, const char *);
+
+/*
+ * Beep!
+ */
+void		 el_beep(EditLine *);
+
+/*
+ * High level function internals control
+ * Parses argc, argv array and executes builtin editline commands
+ */
+int		 el_parse(EditLine *, int, const char **);
+
+/*
+ * Low level editline access functions
+ */
+int		 el_set(EditLine *, int, ...);
+int		 el_get(EditLine *, int, ...);
+unsigned char	_el_fn_complete(EditLine *, int);
+
+/*
+ * el_set/el_get parameters
+ *
+ * When using el_wset/el_wget (as opposed to el_set/el_get):
+ *   Char is wchar_t, otherwise it is char.
+ *   prompt_func is el_wpfunc_t, otherwise it is el_pfunc_t .
+
+ * Prompt function prototypes are:
+ *   typedef char    *(*el_pfunct_t)  (EditLine *);
+ *   typedef wchar_t *(*el_wpfunct_t) (EditLine *);
+ *
+ * For operations that support set or set/get, the argument types listed are for
+ * the "set" operation. For "get", each listed type must be a pointer.
+ * E.g. EL_EDITMODE takes an int when set, but an int* when get.
+ * 
+ * Operations that only support "get" have the correct argument types listed.
+ */
+#define	EL_PROMPT	0	/* , prompt_func);		      set/get */
+#define	EL_TERMINAL	1	/* , const char *);		      set/get */
+#define	EL_EDITOR	2	/* , const Char *);		      set/get */
+#define	EL_SIGNAL	3	/* , int);			      set/get */
+#define	EL_BIND		4	/* , const Char *, ..., NULL);	      set     */
+#define	EL_TELLTC	5	/* , const Char *, ..., NULL);	      set     */
+#define	EL_SETTC	6	/* , const Char *, ..., NULL);	      set     */
+#define	EL_ECHOTC	7	/* , const Char *, ..., NULL);        set     */
+#define	EL_SETTY	8	/* , const Char *, ..., NULL);        set     */
+#define	EL_ADDFN	9	/* , const Char *, const Char,        set     */
+				/*   el_func_t);		 	      */
+#define	EL_HIST		10	/* , hist_fun_t, const void *);	      set     */
+#define	EL_EDITMODE	11	/* , int);			      set/get */
+#define	EL_RPROMPT	12	/* , prompt_func);		      set/get */
+#define	EL_GETCFN	13	/* , el_rfunc_t);		      set/get */
+#define	EL_CLIENTDATA	14	/* , void *);			      set/get */
+#define	EL_UNBUFFERED	15	/* , int);			      set/get */
+#define	EL_PREP_TERM	16	/* , int);			      set     */
+#define	EL_GETTC	17	/* , const Char *, ..., NULL);		  get */
+#define	EL_GETFP	18	/* , int, FILE **);		          get */
+#define	EL_SETFP	19	/* , int, FILE *);		      set     */
+#define	EL_REFRESH	20	/* , void);			      set     */
+#define	EL_PROMPT_ESC	21	/* , prompt_func, Char);	      set/get */
+#define	EL_RPROMPT_ESC	22	/* , prompt_func, Char);	      set/get */
+#define	EL_RESIZE	23	/* , el_zfunc_t, void *);	      set     */
+
+#define	EL_BUILTIN_GETCFN	(NULL)
+
+/*
+ * Source named file or $PWD/.editrc or $HOME/.editrc
+ */
+int		el_source(EditLine *, const char *);
+
+/*
+ * Must be called when the terminal changes size; If EL_SIGNAL
+ * is set this is done automatically otherwise it is the responsibility
+ * of the application
+ */
+void		 el_resize(EditLine *);
+
+/*
+ * User-defined function interface.
+ */
+const LineInfo	*el_line(EditLine *);
+int		 el_insertstr(EditLine *, const char *);
+void		 el_deletestr(EditLine *, int);
+
+
+/*
+ * ==== History ====
+ */
+
+typedef struct history History;
+
+typedef struct HistEvent {
+	int		 num;
+	const char	*str;
+} HistEvent;
+
+/*
+ * History access functions.
+ */
+History *	history_init(void);
+void		history_end(History *);
+
+int		history(History *, HistEvent *, int, ...);
+
+#define	H_FUNC		 0	/* , UTSL		*/
+#define	H_SETSIZE	 1	/* , const int);	*/
+#define	H_GETSIZE	 2	/* , void);		*/
+#define	H_FIRST		 3	/* , void);		*/
+#define	H_LAST		 4	/* , void);		*/
+#define	H_PREV		 5	/* , void);		*/
+#define	H_NEXT		 6	/* , void);		*/
+#define	H_CURR		 8	/* , const int);	*/
+#define	H_SET		 7	/* , int);		*/
+#define	H_ADD		 9	/* , const wchar_t *);	*/
+#define	H_ENTER		10	/* , const wchar_t *);	*/
+#define	H_APPEND	11	/* , const wchar_t *);	*/
+#define	H_END		12	/* , void);		*/
+#define	H_NEXT_STR	13	/* , const wchar_t *);	*/
+#define	H_PREV_STR	14	/* , const wchar_t *);	*/
+#define	H_NEXT_EVENT	15	/* , const int);	*/
+#define	H_PREV_EVENT	16	/* , const int);	*/
+#define	H_LOAD		17	/* , const char *);	*/
+#define	H_SAVE		18	/* , const char *);	*/
+#define	H_CLEAR		19	/* , void);		*/
+#define	H_SETUNIQUE	20	/* , int);		*/
+#define	H_GETUNIQUE	21	/* , void);		*/
+#define	H_DEL		22	/* , int);		*/
+#define	H_NEXT_EVDATA	23	/* , const int, histdata_t *);	*/
+#define	H_DELDATA	24	/* , int, histdata_t *);*/
+#define	H_REPLACE	25	/* , const char *, histdata_t);	*/
+
+
+
+/*
+ * ==== Tokenization ====
+ */
+
+typedef struct tokenizer Tokenizer;
+
+/*
+ * String tokenization functions, using simplified sh(1) quoting rules
+ */
+Tokenizer	*tok_init(const char *);
+void		 tok_end(Tokenizer *);
+void		 tok_reset(Tokenizer *);
+int		 tok_line(Tokenizer *, const LineInfo *,
+		    int *, const char ***, int *, int *);
+int		 tok_str(Tokenizer *, const char *,
+		    int *, const char ***);
+
+/*
+ * Begin Wide Character Support
+ */
+#ifdef __linux__
+/* Apparently we need _GNU_SOURCE defined to get access to wcsdup on Linux */
+#ifndef _GNU_SOURCE
+#define _GNU_SOURCE
+#endif
+#endif
+
+#include <wchar.h>
+#include <wctype.h>
+
+/*
+ * Wide character versions
+ */
+
+/*
+ * ==== Editing ====
+ */
+typedef struct lineinfow {
+	const wchar_t	*buffer;
+	const wchar_t	*cursor;
+	const wchar_t	*lastchar;
+} LineInfoW;
+
+const wchar_t	*el_wgets(EditLine *, int *);
+int		 el_wgetc(EditLine *, wchar_t *);
+void		 el_wpush(EditLine *, const wchar_t *);
+
+int		 el_wparse(EditLine *, int, const wchar_t **);
+
+int		 el_wset(EditLine *, int, ...);
+int		 el_wget(EditLine *, int, ...);
+
+int		 el_cursor(EditLine *, int);
+const LineInfoW	*el_wline(EditLine *);
+int		 el_winsertstr(EditLine *, const wchar_t *);
+#define          el_wdeletestr  el_deletestr
+
+/*
+ * ==== History ====
+ */
+typedef struct histeventW {
+	int		 num;
+	const wchar_t	*str;
+} HistEventW;
+
+typedef struct historyW HistoryW;
+
+HistoryW *	history_winit(void);
+void		history_wend(HistoryW *);
+
+int		history_w(HistoryW *, HistEventW *, int, ...);
+
+/*
+ * ==== Tokenization ====
+ */
+typedef struct tokenizerW TokenizerW;
+
+/* Wide character tokenizer support */
+TokenizerW	*tok_winit(const wchar_t *);
+void		 tok_wend(TokenizerW *);
+void		 tok_wreset(TokenizerW *);
+int		 tok_wline(TokenizerW *, const LineInfoW *,
+		    int *, const wchar_t ***, int *, int *);
+int		 tok_wstr(TokenizerW *, const wchar_t *,
+		    int *, const wchar_t ***);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _HISTEDIT_H_ */
diff --git a/linux-x86/lib/libedit.a b/linux-x86/lib/libedit.a
new file mode 100644
index 0000000..0e159a8
--- /dev/null
+++ b/linux-x86/lib/libedit.a
Binary files differ
diff --git a/linux-x86/lib/libedit.la b/linux-x86/lib/libedit.la
new file mode 100755
index 0000000..09d3c12
--- /dev/null
+++ b/linux-x86/lib/libedit.la
@@ -0,0 +1,41 @@
+# libedit.la - a libtool library file
+# Generated by libtool (GNU libtool) 2.4.2
+#
+# Please DO NOT delete this file!
+# It is necessary for linking the library.
+
+# The name that we can dlopen(3).
+dlname=''
+
+# Names of this library.
+library_names=''
+
+# The name of the static archive.
+old_library='libedit.a'
+
+# Linker flags that can not go in dependency_libs.
+inherited_linker_flags=''
+
+# Libraries that this one depends upon.
+dependency_libs=' -ltinfo'
+
+# Names of additional weak libraries provided by this library
+weak_library_names=''
+
+# Version information for libedit.
+current=0
+age=0
+revision=47
+
+# Is this an already installed library?
+installed=yes
+
+# Should we warn about portability when linking against -modules?
+shouldnotlink=no
+
+# Files to dlopen/dlpreopen
+dlopen=''
+dlpreopen=''
+
+# Directory that this library needs to be installed in:
+libdir='/usr/local/google/home/tfiala/android/master/prebuilts/libs/libedit/linux-x86/lib'
diff --git a/linux-x86/lib/pkgconfig/libedit.pc b/linux-x86/lib/pkgconfig/libedit.pc
new file mode 100644
index 0000000..7c40338
--- /dev/null
+++ b/linux-x86/lib/pkgconfig/libedit.pc
@@ -0,0 +1,12 @@
+prefix=/usr/local/google/home/tfiala/android/master/prebuilts/libs/libedit
+exec_prefix=/usr/local/google/home/tfiala/android/master/prebuilts/libs/libedit/linux-x86
+libdir=${exec_prefix}/lib
+includedir=${prefix}/include
+
+Name: libedit
+Description: command line editor library provides generic line editing, history, and tokenization functions.
+Version: 3.1
+Requires:
+Libs: -L${libdir} -ledit -ltinfo 
+Cflags: -I${includedir} -I${includedir}/editline
+
diff --git a/share/man/man3/editline.3 b/share/man/man3/editline.3
new file mode 100644
index 0000000..357ea16
--- /dev/null
+++ b/share/man/man3/editline.3
@@ -0,0 +1,913 @@
+.\"	$NetBSD: editline.3,v 1.80 2013/07/12 17:48:29 christos Exp $
+.\"
+.\" Copyright (c) 1997-2013 The NetBSD Foundation, Inc.
+.\" All rights reserved.
+.\"
+.\" This file was contributed to The NetBSD Foundation by Luke Mewburn.
+.\"
+.\" 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.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
+.\"
+.Dd July 12, 2013
+.Dt EDITLINE 3
+.Os
+.Sh NAME
+.Nm editline ,
+.Nm el_init ,
+.Nm el_init_fd ,
+.Nm el_end ,
+.Nm el_reset ,
+.Nm el_gets ,
+.Nm el_wgets ,
+.Nm el_getc ,
+.Nm el_wgetc ,
+.Nm el_push ,
+.Nm el_wpush ,
+.Nm el_parse ,
+.Nm el_wparse ,
+.Nm el_set ,
+.Nm el_wset ,
+.Nm el_get ,
+.Nm el_wget ,
+.Nm el_source ,
+.Nm el_resize ,
+.Nm el_cursor ,
+.Nm el_line ,
+.Nm el_wline ,
+.Nm el_insertstr ,
+.Nm el_winsertstr ,
+.Nm el_deletestr ,
+.Nm el_wdeletestr ,
+.Nm history_init ,
+.Nm history_winit ,
+.Nm history_end ,
+.Nm history_wend ,
+.Nm history ,
+.Nm history_w ,
+.Nm tok_init ,
+.Nm tok_winit ,
+.Nm tok_end ,
+.Nm tok_wend ,
+.Nm tok_reset ,
+.Nm tok_wreset ,
+.Nm tok_line ,
+.Nm tok_wline ,
+.Nm tok_str
+.Nm tok_wstr
+.Nd line editor, history and tokenization functions
+.Sh LIBRARY
+.Lb libedit
+.Sh SYNOPSIS
+.In histedit.h
+.Ft EditLine *
+.Fn el_init "const char *prog" "FILE *fin" "FILE *fout" "FILE *ferr"
+.Ft EditLine *
+.Fn el_init_fd "const char *prog" "FILE *fin" "FILE *fout" "FILE *ferr" "int fdin" "int fdout" "int fderr"
+.Ft void
+.Fn el_end "EditLine *e"
+.Ft void
+.Fn el_reset "EditLine *e"
+.Ft const char *
+.Fn el_gets "EditLine *e" "int *count"
+.Ft const wchar_t *
+.Fn el_wgets "EditLine *e" "int *count"
+.Ft int
+.Fn el_getc "EditLine *e" "char *ch"
+.Ft int
+.Fn el_wgetc "EditLine *e" "wchar_t *ch"
+.Ft void
+.Fn el_push "EditLine *e" "const char *str"
+.Ft void
+.Fn el_wpush "EditLine *e" "const wchar_t *str"
+.Ft int
+.Fn el_parse "EditLine *e" "int argc" "const char *argv[]"
+.Ft int
+.Fn el_wparse "EditLine *e" "int argc" "const wchar_t *argv[]"
+.Ft int
+.Fn el_set "EditLine *e" "int op" "..."
+.Ft int
+.Fn el_wset "EditLine *e" "int op" "..."
+.Ft int
+.Fn el_get "EditLine *e" "int op" "..."
+.Ft int
+.Fn el_wget "EditLine *e" "int op" "..."
+.Ft int
+.Fn el_source "EditLine *e" "const char *file"
+.Ft void
+.Fn el_resize "EditLine *e"
+.Fn int
+.Fn el_cursor "EditLine *e" "int count"
+.Ft const LineInfo *
+.Fn el_line "EditLine *e"
+.Ft const LineInfoW *
+.Fn el_wline "EditLine *e"
+.Ft int
+.Fn el_insertstr "EditLine *e" "const char *str"
+.Ft int
+.Fn el_winsertstr "EditLine *e" "const wchar_t *str"
+.Ft void
+.Fn el_deletestr "EditLine *e" "int count"
+.Ft void
+.Fn el_wdeletestr "EditLine *e" "int count"
+.Ft History *
+.Fn history_init
+.Ft HistoryW *
+.Fn history_winit
+.Ft void
+.Fn history_end "History *h"
+.Ft void
+.Fn history_wend "HistoryW *h"
+.Ft int
+.Fn history "History *h" "HistEvent *ev" "int op" "..."
+.Ft int
+.Fn history_w "HistoryW *h" "HistEventW *ev" "int op" "..."
+.Ft Tokenizer *
+.Fn tok_init "const char *IFS"
+.Ft TokenizerW *
+.Fn tok_winit "const wchar_t *IFS"
+.Ft void
+.Fn tok_end "Tokenizer *t"
+.Ft void
+.Fn tok_wend "TokenizerW *t"
+.Ft void
+.Fn tok_reset "Tokenizer *t"
+.Ft void
+.Fn tok_wreset "TokenizerW *t"
+.Ft int
+.Fn tok_line "Tokenizer *t" "const LineInfo *li" "int *argc" "const char **argv[]" "int *cursorc" "int *cursoro"
+.Ft int
+.Fn tok_wline "TokenizerW *t" "const LineInfoW *li" "int *argc" "const wchar_t **argv[]" "int *cursorc" "int *cursoro"
+.Ft int
+.Fn tok_str "Tokenizer *t" "const char *str" "int *argc" "const char **argv[]"
+.Ft int
+.Fn tok_wstr "TokenizerW *t" "const wchar_t *str" "int *argc" "const wchar_t **argv[]"
+.Sh DESCRIPTION
+The
+.Nm
+library provides generic line editing, history and tokenization functions,
+similar to those found in
+.Xr sh 1 .
+.Pp
+These functions are available in the
+.Nm libedit
+library (which needs the
+.Nm libtermcap
+library).
+Programs should be linked with
+.Fl ledit ltermcap .
+.Sh LINE EDITING FUNCTIONS
+The line editing functions use a common data structure,
+.Fa EditLine ,
+which is created by
+.Fn el_init
+or
+.Fn el_init_fd
+and freed by
+.Fn el_end .
+.Pp
+The wide-character functions behave the same way as their narrow
+counterparts.
+.Pp
+The following functions are available:
+.Bl -tag -width 4n
+.It Fn el_init
+Initialise the line editor, and return a data structure
+to be used by all other line editing functions.
+.Fa prog
+is the name of the invoking program, used when reading the
+.Xr editrc 5
+file to determine which settings to use.
+.Fa fin ,
+.Fa fout
+and
+.Fa ferr
+are the input, output, and error streams (respectively) to use.
+In this documentation, references to
+.Dq the tty
+are actually to this input/output stream combination.
+.It Fn el_init_fd
+Like
+.Fn el_init
+but allows specifying file descriptors for the
+.Xr stdio 3
+corresponding streams, in case those were created with
+.Xr funopen 3 .
+.It Fn el_end
+Clean up and finish with
+.Fa e ,
+assumed to have been created with
+.Fn el_init
+or
+.Fn el_init_fd .
+.It Fn el_reset
+Reset the tty and the parser.
+This should be called after an error which may have upset the tty's
+state.
+.It Fn el_gets
+Read a line from the tty.
+.Fa count
+is modified to contain the number of characters read.
+Returns the line read if successful, or
+.Dv NULL
+if no characters were read or if an error occurred.
+If an error occurred,
+.Fa count
+is set to \-1 and
+.Dv errno
+contains the error code that caused it.
+The return value may not remain valid across calls to
+.Fn el_gets
+and must be copied if the data is to be retained.
+.It Fn el_getc
+Read a character from the tty.
+.Fa ch
+is modified to contain the character read.
+Returns the number of characters read if successful, \-1 otherwise,
+in which case
+.Dv errno
+can be inspected for the cause.
+.It Fn el_push
+Pushes
+.Fa str
+back onto the input stream.
+This is used by the macro expansion mechanism.
+Refer to the description of
+.Ic bind
+.Fl s
+in
+.Xr editrc 5
+for more information.
+.It Fn el_parse
+Parses the
+.Fa argv
+array (which is
+.Fa argc
+elements in size)
+to execute builtin
+.Nm
+commands.
+If the command is prefixed with
+.Dq prog :
+then
+.Fn el_parse
+will only execute the command if
+.Dq prog
+matches the
+.Fa prog
+argument supplied to
+.Fn el_init .
+The return value is
+\-1 if the command is unknown,
+0 if there was no error or
+.Dq prog
+didn't match, or
+1 if the command returned an error.
+Refer to
+.Xr editrc 5
+for more information.
+.It Fn el_set
+Set
+.Nm
+parameters.
+.Fa op
+determines which parameter to set, and each operation has its
+own parameter list.
+.Pp
+The following values for
+.Fa op
+are supported, along with the required argument list:
+.Bl -tag -width 4n
+.It Dv EL_PROMPT , Fa "char *(*f)(EditLine *)"
+Define prompt printing function as
+.Fa f ,
+which is to return a string that contains the prompt.
+.It Dv EL_PROMPT_ESC , Fa "char *(*f)(EditLine *)" , Fa "char c"
+Same as
+.Dv EL_PROMPT ,
+but the
+.Fa c
+argument indicates the start/stop literal prompt character.
+.Pp
+If a start/stop literal character is found in the prompt, the
+character itself
+is not printed, but characters after it are printed directly to the
+terminal without affecting the state of the current line.
+A subsequent second start/stop literal character ends this behavior.
+This is typically used to embed literal escape sequences that change the
+color/style of the terminal in the prompt.
+.Dv 0
+unsets it.
+.It Dv EL_REFRESH
+Re-display the current line on the next terminal line.
+.It Dv EL_RPROMPT , Fa "char *(*f)(EditLine *)"
+Define right side prompt printing function as
+.Fa f ,
+which is to return a string that contains the prompt.
+.It Dv EL_RPROMPT_ESC , Fa "char *(*f)(EditLine *)" , Fa "char c"
+Define the right prompt printing function but with a literal escape character.
+.It Dv EL_TERMINAL , Fa "const char *type"
+Define terminal type of the tty to be
+.Fa type ,
+or to
+.Ev TERM
+if
+.Fa type
+is
+.Dv NULL .
+.It Dv EL_EDITOR , Fa "const char *mode"
+Set editing mode to
+.Fa mode ,
+which must be one of
+.Dq emacs
+or
+.Dq vi .
+.It Dv EL_SIGNAL , Fa "int flag"
+If
+.Fa flag
+is non-zero,
+.Nm
+will install its own signal handler for the following signals when
+reading command input:
+.Dv SIGCONT ,
+.Dv SIGHUP ,
+.Dv SIGINT ,
+.Dv SIGQUIT ,
+.Dv SIGSTOP ,
+.Dv SIGTERM ,
+.Dv SIGTSTP ,
+and
+.Dv SIGWINCH .
+Otherwise, the current signal handlers will be used.
+.It Dv EL_BIND , Fa "const char *" , Fa "..." , Dv NULL
+Perform the
+.Ic bind
+builtin command.
+Refer to
+.Xr editrc 5
+for more information.
+.It Dv EL_ECHOTC , Fa "const char *" , Fa "..." , Dv NULL
+Perform the
+.Ic echotc
+builtin command.
+Refer to
+.Xr editrc 5
+for more information.
+.It Dv EL_SETTC , Fa "const char *" , Fa "..." , Dv NULL
+Perform the
+.Ic settc
+builtin command.
+Refer to
+.Xr editrc 5
+for more information.
+.It Dv EL_SETTY , Fa "const char *" , Fa "..." , Dv NULL
+Perform the
+.Ic setty
+builtin command.
+Refer to
+.Xr editrc 5
+for more information.
+.It Dv EL_TELLTC , Fa "const char *" , Fa "..." , Dv NULL
+Perform the
+.Ic telltc
+builtin command.
+Refer to
+.Xr editrc 5
+for more information.
+.It Dv EL_ADDFN , Fa "const char *name" , Fa "const char *help" , \
+Fa "unsigned char (*func)(EditLine *e, int ch)"
+Add a user defined function,
+.Fn func ,
+referred to as
+.Fa name
+which is invoked when a key which is bound to
+.Fa name
+is entered.
+.Fa help
+is a description of
+.Fa name .
+At invocation time,
+.Fa ch
+is the key which caused the invocation.
+The return value of
+.Fn func
+should be one of:
+.Bl -tag -width "CC_REDISPLAY"
+.It Dv CC_NORM
+Add a normal character.
+.It Dv CC_NEWLINE
+End of line was entered.
+.It Dv CC_EOF
+EOF was entered.
+.It Dv CC_ARGHACK
+Expecting further command input as arguments, do nothing visually.
+.It Dv CC_REFRESH
+Refresh display.
+.It Dv CC_REFRESH_BEEP
+Refresh display, and beep.
+.It Dv CC_CURSOR
+Cursor moved, so update and perform
+.Dv CC_REFRESH .
+.It Dv CC_REDISPLAY
+Redisplay entire input line.
+This is useful if a key binding outputs extra information.
+.It Dv CC_ERROR
+An error occurred.
+Beep, and flush tty.
+.It Dv CC_FATAL
+Fatal error, reset tty to known state.
+.El
+.It Dv EL_HIST , Fa "History *(*func)(History *, int op, ...)" , \
+Fa "const char *ptr"
+Defines which history function to use, which is usually
+.Fn history .
+.Fa ptr
+should be the value returned by
+.Fn history_init .
+.It Dv EL_EDITMODE , Fa "int flag"
+If
+.Fa flag
+is non-zero,
+editing is enabled (the default).
+Note that this is only an indication, and does not
+affect the operation of
+.Nm .
+At this time, it is the caller's responsibility to
+check this
+(using
+.Fn el_get )
+to determine if editing should be enabled or not.
+.It Dv EL_UNBUFFERED , Fa "int flag"
+If
+.Fa flag
+is zero,
+unbuffered mode is disabled (the default).
+In unbuffered mode,
+.Fn el_gets
+will return immediately after processing a single character.
+.It Dv EL_GETCFN , Fa "int (*f)(EditLine *, char *c)"
+Define the character reading function as
+.Fa f ,
+which is to return the number of characters read and store them in
+.Fa c .
+This function is called internally by
+.Fn el_gets
+and
+.Fn el_getc .
+The builtin function can be set or restored with the special function
+name
+.Dq Dv EL_BUILTIN_GETCFN .
+.It Dv EL_CLIENTDATA , Fa "void *data"
+Register
+.Fa data
+to be associated with this EditLine structure.
+It can be retrieved with the corresponding
+.Fn el_get
+call.
+.It Dv EL_SETFP , Fa "int fd" , Fa "FILE *fp"
+Set the current
+.Nm editline
+file pointer for
+.Dq input
+.Fa fd
+=
+.Dv 0 ,
+.Dq output
+.Fa fd
+=
+.Dv 1 ,
+or
+.Dq error
+.Fa fd
+=
+.Dv 2
+from
+.Fa fp .
+.El
+.It Fn el_get
+Get
+.Nm
+parameters.
+.Fa op
+determines which parameter to retrieve into
+.Fa result .
+Returns 0 if successful, \-1 otherwise.
+.Pp
+The following values for
+.Fa op
+are supported, along with actual type of
+.Fa result :
+.Bl -tag -width 4n
+.It Dv EL_PROMPT , Fa "char *(*f)(EditLine *)" , Fa "char *c"
+Return a pointer to the function that displays the prompt in
+.Fa f .
+If
+.Fa c
+is not
+.Dv NULL ,
+return the start/stop literal prompt character in it.
+.It Dv EL_RPROMPT , Fa "char *(*f)(EditLine *)" , Fa "char *c"
+Return a pointer to the function that displays the prompt in
+.Fa f .
+If
+.Fa c
+is not
+.Dv NULL ,
+return the start/stop literal prompt character in it.
+.It Dv EL_EDITOR , Fa "const char **"
+Return the name of the editor, which will be one of
+.Dq emacs
+or
+.Dq vi .
+.It Dv EL_GETTC , Fa "const char *name" , Fa "void *value"
+Return non-zero if
+.Fa name
+is a valid
+.Xr termcap 5
+capability
+and set
+.Fa value
+to the current value of that capability.
+.It Dv EL_SIGNAL , Fa "int *"
+Return non-zero if
+.Nm
+has installed private signal handlers (see
+.Fn el_get
+above).
+.It Dv EL_EDITMODE , Fa "int *"
+Return non-zero if editing is enabled.
+.It Dv EL_GETCFN , Fa "int (**f)(EditLine *, char *)"
+Return a pointer to the function that read characters, which is equal to
+.Dq Dv EL_BUILTIN_GETCFN
+in the case of the default builtin function.
+.It Dv EL_CLIENTDATA , Fa "void **data"
+Retrieve
+.Fa data
+previously registered with the corresponding
+.Fn el_set
+call.
+.It Dv EL_UNBUFFERED , Fa "int"
+Return non-zero if unbuffered mode is enabled.
+.It Dv EL_PREP_TERM , Fa "int"
+Sets or clears terminal editing mode.
+.It Dv EL_GETFP , Fa "int fd", Fa "FILE **fp"
+Return in
+.Fa fp
+the current
+.Nm editline
+file pointer for
+.Dq input
+.Fa fd
+=
+.Dv 0 ,
+.Dq output
+.Fa fd
+=
+.Dv 1 ,
+or
+.Dq error
+.Fa fd
+=
+.Dv 2 .
+.El
+.It Fn el_source
+Initialise
+.Nm
+by reading the contents of
+.Fa file .
+.Fn el_parse
+is called for each line in
+.Fa file .
+If
+.Fa file
+is
+.Dv NULL ,
+try
+.Pa $HOME/.editrc .
+Refer to
+.Xr editrc 5
+for details on the format of
+.Fa file .
+.It Fn el_resize
+Must be called if the terminal size changes.
+If
+.Dv EL_SIGNAL
+has been set with
+.Fn el_set ,
+then this is done automatically.
+Otherwise, it's the responsibility of the application to call
+.Fn el_resize
+on the appropriate occasions.
+.It Fn el_cursor
+Move the cursor to the right (if positive) or to the left (if negative)
+.Fa count
+characters.
+Returns the resulting offset of the cursor from the beginning of the line.
+.It Fn el_line
+Return the editing information for the current line in a
+.Fa LineInfo
+structure, which is defined as follows:
+.Bd -literal
+typedef struct lineinfo {
+    const char *buffer;    /* address of buffer */
+    const char *cursor;    /* address of cursor */
+    const char *lastchar;  /* address of last character */
+} LineInfo;
+.Ed
+.Pp
+.Fa buffer
+is not NUL terminated.
+This function may be called after
+.Fn el_gets
+to obtain the
+.Fa LineInfo
+structure pertaining to line returned by that function,
+and from within user defined functions added with
+.Dv EL_ADDFN .
+.It Fn el_insertstr
+Insert
+.Fa str
+into the line at the cursor.
+Returns \-1 if
+.Fa str
+is empty or won't fit, and 0 otherwise.
+.It Fn el_deletestr
+Delete
+.Fa count
+characters before the cursor.
+.El
+.Sh HISTORY LIST FUNCTIONS
+The history functions use a common data structure,
+.Fa History ,
+which is created by
+.Fn history_init
+and freed by
+.Fn history_end .
+.Pp
+The following functions are available:
+.Bl -tag -width 4n
+.It Fn history_init
+Initialise the history list, and return a data structure
+to be used by all other history list functions.
+.It Fn history_end
+Clean up and finish with
+.Fa h ,
+assumed to have been created with
+.Fn history_init .
+.It Fn history
+Perform operation
+.Fa op
+on the history list, with optional arguments as needed by the
+operation.
+.Fa ev
+is changed accordingly to operation.
+The following values for
+.Fa op
+are supported, along with the required argument list:
+.Bl -tag -width 4n
+.It Dv H_SETSIZE , Fa "int size"
+Set size of history to
+.Fa size
+elements.
+.It Dv H_GETSIZE
+Get number of events currently in history.
+.It Dv H_END
+Cleans up and finishes with
+.Fa h ,
+assumed to be created with
+.Fn history_init .
+.It Dv H_CLEAR
+Clear the history.
+.It Dv H_FUNC , Fa "void *ptr" , Fa "history_gfun_t first" , \
+Fa "history_gfun_t next" , Fa "history_gfun_t last" , \
+Fa "history_gfun_t prev" , Fa "history_gfun_t curr" , \
+Fa "history_sfun_t set" , Fa "history_vfun_t clear" , \
+Fa "history_efun_t enter" , Fa "history_efun_t add"
+Define functions to perform various history operations.
+.Fa ptr
+is the argument given to a function when it's invoked.
+.It Dv H_FIRST
+Return the first element in the history.
+.It Dv H_LAST
+Return the last element in the history.
+.It Dv H_PREV
+Return the previous element in the history.
+.It Dv H_NEXT
+Return the next element in the history.
+.It Dv H_CURR
+Return the current element in the history.
+.It Dv H_SET
+Set the cursor to point to the requested element.
+.It Dv H_ADD , Fa "const char *str"
+Append
+.Fa str
+to the current element of the history, or perform the
+.Dv H_ENTER
+operation with argument
+.Fa str
+if there is no current element.
+.It Dv H_APPEND , Fa "const char *str"
+Append
+.Fa str
+to the last new element of the history.
+.It Dv H_ENTER , Fa "const char *str"
+Add
+.Fa str
+as a new element to the history, and, if necessary,
+removing the oldest entry to keep the list to the created size.
+If
+.Dv H_SETUNIQUE
+was has been called with a non-zero arguments, the element
+will not be entered into the history if its contents match
+the ones of the current history element.
+If the element is entered
+.Fn history
+returns 1, if it is ignored as a duplicate returns 0.
+Finally
+.Fn history
+returns \-1 if an error occurred.
+.It Dv H_PREV_STR , Fa "const char *str"
+Return the closest previous event that starts with
+.Fa str .
+.It Dv H_NEXT_STR , Fa "const char *str"
+Return the closest next event that starts with
+.Fa str .
+.It Dv H_PREV_EVENT , Fa "int e"
+Return the previous event numbered
+.Fa e .
+.It Dv H_NEXT_EVENT , Fa "int e"
+Return the next event numbered
+.Fa e .
+.It Dv H_LOAD , Fa "const char *file"
+Load the history list stored in
+.Fa file .
+.It Dv H_SAVE , Fa "const char *file"
+Save the history list to
+.Fa file .
+.It Dv H_SETUNIQUE , Fa "int unique"
+Set flag that adjacent identical event strings should not be entered
+into the history.
+.It Dv H_GETUNIQUE
+Retrieve the current setting if adjacent identical elements should
+be entered into the history.
+.It Dv H_DEL , Fa "int e"
+Delete the event numbered
+.Fa e .
+This function is only provided for
+.Xr readline 3
+compatibility.
+The caller is responsible for free'ing the string in the returned
+.Fa HistEvent .
+.El
+.Pp
+.Fn history
+returns \*[Gt]= 0 if the operation
+.Fa op
+succeeds.
+Otherwise, \-1 is returned and
+.Fa ev
+is updated to contain more details about the error.
+.El
+.Sh TOKENIZATION FUNCTIONS
+The tokenization functions use a common data structure,
+.Fa Tokenizer ,
+which is created by
+.Fn tok_init
+and freed by
+.Fn tok_end .
+.Pp
+The following functions are available:
+.Bl -tag -width 4n
+.It Fn tok_init
+Initialise the tokenizer, and return a data structure
+to be used by all other tokenizer functions.
+.Fa IFS
+contains the Input Field Separators, which defaults to
+.Aq space ,
+.Aq tab ,
+and
+.Aq newline
+if
+.Dv NULL .
+.It Fn tok_end
+Clean up and finish with
+.Fa t ,
+assumed to have been created with
+.Fn tok_init .
+.It Fn tok_reset
+Reset the tokenizer state.
+Use after a line has been successfully tokenized
+by
+.Fn tok_line
+or
+.Fn tok_str
+and before a new line is to be tokenized.
+.It Fn tok_line
+Tokenize
+.Fa li ,
+If successful, modify:
+.Fa argv
+to contain the words,
+.Fa argc
+to contain the number of words,
+.Fa cursorc
+(if not
+.Dv NULL )
+to contain the index of the word containing the cursor,
+and
+.Fa cursoro
+(if not
+.Dv NULL )
+to contain the offset within
+.Fa argv[cursorc]
+of the cursor.
+.Pp
+Returns
+0 if successful,
+\-1 for an internal error,
+1 for an unmatched single quote,
+2 for an unmatched double quote,
+and
+3 for a backslash quoted
+.Aq newline .
+A positive exit code indicates that another line should be read
+and tokenization attempted again.
+.
+.It Fn tok_str
+A simpler form of
+.Fn tok_line ;
+.Fa str
+is a NUL terminated string to tokenize.
+.El
+.
+.\"XXX.Sh EXAMPLES
+.\"XXX: provide some examples
+.Sh SEE ALSO
+.Xr sh 1 ,
+.Xr signal 3 ,
+.Xr termcap 3 ,
+.Xr editrc 5 ,
+.Xr termcap 5
+.Sh HISTORY
+The
+.Nm
+library first appeared in
+.Bx 4.4 .
+.Dv CC_REDISPLAY
+appeared in
+.Nx 1.3 .
+.Dv CC_REFRESH_BEEP ,
+.Dv EL_EDITMODE
+and the readline emulation appeared in
+.Nx 1.4 .
+.Dv EL_RPROMPT
+appeared in
+.Nx 1.5 .
+.Sh AUTHORS
+The
+.Nm
+library was written by Christos Zoulas.
+Luke Mewburn wrote this manual and implemented
+.Dv CC_REDISPLAY ,
+.Dv CC_REFRESH_BEEP ,
+.Dv EL_EDITMODE ,
+and
+.Dv EL_RPROMPT .
+Jaromir Dolecek implemented the readline emulation.
+Johny Mattsson implemented wide-character support.
+.Sh BUGS
+At this time, it is the responsibility of the caller to
+check the result of the
+.Dv EL_EDITMODE
+operation of
+.Fn el_get
+(after an
+.Fn el_source
+or
+.Fn el_parse )
+to determine if
+.Nm
+should be used for further input.
+I.e.,
+.Dv EL_EDITMODE
+is purely an indication of the result of the most recent
+.Xr editrc 5
+.Ic edit
+command.
diff --git a/share/man/man3/el_deletestr.3 b/share/man/man3/el_deletestr.3
new file mode 120000
index 0000000..7ba2082
--- /dev/null
+++ b/share/man/man3/el_deletestr.3
@@ -0,0 +1 @@
+editline.3
\ No newline at end of file
diff --git a/share/man/man3/el_end.3 b/share/man/man3/el_end.3
new file mode 120000
index 0000000..7ba2082
--- /dev/null
+++ b/share/man/man3/el_end.3
@@ -0,0 +1 @@
+editline.3
\ No newline at end of file
diff --git a/share/man/man3/el_get.3 b/share/man/man3/el_get.3
new file mode 120000
index 0000000..7ba2082
--- /dev/null
+++ b/share/man/man3/el_get.3
@@ -0,0 +1 @@
+editline.3
\ No newline at end of file
diff --git a/share/man/man3/el_getc.3 b/share/man/man3/el_getc.3
new file mode 120000
index 0000000..7ba2082
--- /dev/null
+++ b/share/man/man3/el_getc.3
@@ -0,0 +1 @@
+editline.3
\ No newline at end of file
diff --git a/share/man/man3/el_gets.3 b/share/man/man3/el_gets.3
new file mode 120000
index 0000000..7ba2082
--- /dev/null
+++ b/share/man/man3/el_gets.3
@@ -0,0 +1 @@
+editline.3
\ No newline at end of file
diff --git a/share/man/man3/el_history.3 b/share/man/man3/el_history.3
new file mode 120000
index 0000000..7ba2082
--- /dev/null
+++ b/share/man/man3/el_history.3
@@ -0,0 +1 @@
+editline.3
\ No newline at end of file
diff --git a/share/man/man3/el_history_end.3 b/share/man/man3/el_history_end.3
new file mode 120000
index 0000000..7ba2082
--- /dev/null
+++ b/share/man/man3/el_history_end.3
@@ -0,0 +1 @@
+editline.3
\ No newline at end of file
diff --git a/share/man/man3/el_history_init.3 b/share/man/man3/el_history_init.3
new file mode 120000
index 0000000..7ba2082
--- /dev/null
+++ b/share/man/man3/el_history_init.3
@@ -0,0 +1 @@
+editline.3
\ No newline at end of file
diff --git a/share/man/man3/el_init.3 b/share/man/man3/el_init.3
new file mode 120000
index 0000000..7ba2082
--- /dev/null
+++ b/share/man/man3/el_init.3
@@ -0,0 +1 @@
+editline.3
\ No newline at end of file
diff --git a/share/man/man3/el_insertstr.3 b/share/man/man3/el_insertstr.3
new file mode 120000
index 0000000..7ba2082
--- /dev/null
+++ b/share/man/man3/el_insertstr.3
@@ -0,0 +1 @@
+editline.3
\ No newline at end of file
diff --git a/share/man/man3/el_line.3 b/share/man/man3/el_line.3
new file mode 120000
index 0000000..7ba2082
--- /dev/null
+++ b/share/man/man3/el_line.3
@@ -0,0 +1 @@
+editline.3
\ No newline at end of file
diff --git a/share/man/man3/el_parse.3 b/share/man/man3/el_parse.3
new file mode 120000
index 0000000..7ba2082
--- /dev/null
+++ b/share/man/man3/el_parse.3
@@ -0,0 +1 @@
+editline.3
\ No newline at end of file
diff --git a/share/man/man3/el_push.3 b/share/man/man3/el_push.3
new file mode 120000
index 0000000..7ba2082
--- /dev/null
+++ b/share/man/man3/el_push.3
@@ -0,0 +1 @@
+editline.3
\ No newline at end of file
diff --git a/share/man/man3/el_reset.3 b/share/man/man3/el_reset.3
new file mode 120000
index 0000000..7ba2082
--- /dev/null
+++ b/share/man/man3/el_reset.3
@@ -0,0 +1 @@
+editline.3
\ No newline at end of file
diff --git a/share/man/man3/el_resize.3 b/share/man/man3/el_resize.3
new file mode 120000
index 0000000..7ba2082
--- /dev/null
+++ b/share/man/man3/el_resize.3
@@ -0,0 +1 @@
+editline.3
\ No newline at end of file
diff --git a/share/man/man3/el_set.3 b/share/man/man3/el_set.3
new file mode 120000
index 0000000..7ba2082
--- /dev/null
+++ b/share/man/man3/el_set.3
@@ -0,0 +1 @@
+editline.3
\ No newline at end of file
diff --git a/share/man/man3/el_source.3 b/share/man/man3/el_source.3
new file mode 120000
index 0000000..7ba2082
--- /dev/null
+++ b/share/man/man3/el_source.3
@@ -0,0 +1 @@
+editline.3
\ No newline at end of file
diff --git a/share/man/man3/el_tok_end.3 b/share/man/man3/el_tok_end.3
new file mode 120000
index 0000000..7ba2082
--- /dev/null
+++ b/share/man/man3/el_tok_end.3
@@ -0,0 +1 @@
+editline.3
\ No newline at end of file
diff --git a/share/man/man3/el_tok_init.3 b/share/man/man3/el_tok_init.3
new file mode 120000
index 0000000..7ba2082
--- /dev/null
+++ b/share/man/man3/el_tok_init.3
@@ -0,0 +1 @@
+editline.3
\ No newline at end of file
diff --git a/share/man/man3/el_tok_line.3 b/share/man/man3/el_tok_line.3
new file mode 120000
index 0000000..7ba2082
--- /dev/null
+++ b/share/man/man3/el_tok_line.3
@@ -0,0 +1 @@
+editline.3
\ No newline at end of file
diff --git a/share/man/man3/el_tok_reset.3 b/share/man/man3/el_tok_reset.3
new file mode 120000
index 0000000..7ba2082
--- /dev/null
+++ b/share/man/man3/el_tok_reset.3
@@ -0,0 +1 @@
+editline.3
\ No newline at end of file
diff --git a/share/man/man3/el_tok_str.3 b/share/man/man3/el_tok_str.3
new file mode 120000
index 0000000..7ba2082
--- /dev/null
+++ b/share/man/man3/el_tok_str.3
@@ -0,0 +1 @@
+editline.3
\ No newline at end of file
diff --git a/share/man/man5/editrc.5 b/share/man/man5/editrc.5
new file mode 100644
index 0000000..643f459
--- /dev/null
+++ b/share/man/man5/editrc.5
@@ -0,0 +1,498 @@
+.\"	$NetBSD: editrc.5,v 1.27 2013/01/10 16:03:42 wiz Exp $
+.\"
+.\" Copyright (c) 1997-2000 The NetBSD Foundation, Inc.
+.\" All rights reserved.
+.\"
+.\" This file was contributed to The NetBSD Foundation by Luke Mewburn.
+.\"
+.\" 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.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
+.\"
+.Dd January 10, 2013
+.Dt EDITRC 5
+.Os
+.Sh NAME
+.Nm editrc
+.Nd configuration file for editline library
+.Sh SYNOPSIS
+.Nm
+.Sh DESCRIPTION
+The
+.Nm
+file defines various settings to be used by the
+.Xr editline 3
+library.
+.Pp
+The format of each line is:
+.Dl [prog:]command [arg [...]]
+.Pp
+.Ar command
+is one of the
+.Xr editline 3
+builtin commands.
+Refer to
+.Sx BUILTIN COMMANDS
+for more information.
+.Pp
+.Ar prog
+is the program name string that a program defines when it calls
+.Xr el_init 3
+to set up
+.Xr editline 3 ,
+which is usually
+.Va argv[0] .
+.Ar command
+will be executed for any program which matches
+.Ar prog .
+.Pp
+.Ar prog
+may also be a
+.Xr regex 3
+style
+regular expression, in which case
+.Ar command
+will be executed for any program that matches the regular expression.
+.Pp
+If
+.Ar prog
+is absent,
+.Ar command
+is executed for all programs.
+.Sh BUILTIN COMMANDS
+The
+.Nm editline
+library has some builtin commands, which affect the way
+that the line editing and history functions operate.
+These are based on similar named builtins present in the
+.Xr tcsh 1
+shell.
+.Pp
+The following builtin commands are available:
+.Bl -tag -width 4n
+.It Ic bind Oo Fl a Oc Oo Fl e Oc Oo Fl k Oc Oo Fl l Oc Oo Fl r Oc \
+Oo Fl s Oc Oo Fl v Oc Oo Ar key Oo Ar command Oc Oc
+Without options, list all bound keys, and the editor command to which
+each is bound.
+If
+.Ar key
+is supplied, show the bindings for
+.Ar key .
+If
+.Ar key command
+is supplied, bind
+.Ar command
+to
+.Ar key .
+Options include:
+.Bl -tag -width 4n
+.It Fl e
+Bind all keys to the standard GNU Emacs-like bindings.
+.It Fl v
+Bind all keys to the standard
+.Xr vi 1 Ns -like
+bindings.
+.It Fl a
+List or change key bindings in the
+.Xr vi 1
+mode alternate (command mode) key map.
+.It Fl k
+.Ar key
+is interpreted as a symbolic arrow key name, which may be one of
+.Sq up ,
+.Sq down ,
+.Sq left
+or
+.Sq right .
+.It Fl l
+List all editor commands and a short description of each.
+.It Fl r
+Remove a key's binding.
+.It Fl s
+.Ar command
+is taken as a literal string and treated as terminal input when
+.Ar key
+is typed.
+Bound keys in
+.Ar command
+are themselves reinterpreted, and this continues for ten levels of
+interpretation.
+.El
+.Pp
+.Ar command
+may be one of the commands documented in
+.Sx "EDITOR COMMANDS"
+below, or another key.
+.Pp
+.Ar key
+and
+.Ar command
+can contain control characters of the form
+.Sm off
+.Sq No ^ Ar character
+.Sm on
+.Po
+e.g.
+.Sq ^A
+.Pc ,
+and the following backslashed escape sequences:
+.Pp
+.Bl -tag -compact -offset indent -width 4n
+.It Ic \ea
+Bell
+.It Ic \eb
+Backspace
+.It Ic \ee
+Escape
+.It Ic \ef
+Formfeed
+.It Ic \en
+Newline
+.It Ic \er
+Carriage return
+.It Ic \et
+Horizontal tab
+.It Ic \ev
+Vertical tab
+.Sm off
+.It Sy \e Ar nnn
+.Sm on
+The ASCII character corresponding to the octal number
+.Ar nnn .
+.El
+.Pp
+.Sq \e
+nullifies the special meaning of the following character,
+if it has any, notably
+.Sq \e
+and
+.Sq ^ .
+.It Ic echotc Oo Fl sv Oc Ar arg Ar ...
+Exercise terminal capabilities given in
+.Ar arg Ar ... .
+If
+.Ar arg
+is
+.Sq baud ,
+.Sq cols ,
+.Sq lines ,
+.Sq rows ,
+.Sq meta ,
+or
+.Sq tabs ,
+the value of that capability is printed, with
+.Dq yes
+or
+.Dq no
+indicating that the terminal does or does not have that capability.
+.Pp
+.Fl s
+returns an empty string for non-existent capabilities, rather than
+causing an error.
+.Fl v
+causes messages to be verbose.
+.It Ic edit Op Li on | Li off
+Enable or disable the
+.Nm editline
+functionality in a program.
+.It Ic history Ar list | Ar size Dv n | Ar unique Dv n
+The
+.Ar list
+command lists all entries in the history.
+The
+.Ar size
+command sets the history size to
+.Dv n
+entries.
+The
+.Ar unique
+command controls if history should keep duplicate entries.
+If
+.Dv n
+is non zero, only keep unique history entries.
+If
+.Dv n
+is zero, then keep all entries (the default).
+.It Ic telltc
+List the values of all the terminal capabilities (see
+.Xr termcap 5 ) .
+.It Ic settc Ar cap Ar val
+Set the terminal capability
+.Ar cap
+to
+.Ar val ,
+as defined in
+.Xr termcap 5 .
+No sanity checking is done.
+.It Ic setty Oo Fl a Oc Oo Fl d Oc Oo Fl q Oc Oo Fl x Oc Oo Ar +mode Oc \
+Oo Ar -mode Oc Oo Ar mode Oc Oo Ar char=c Oc
+Control which tty modes that
+.Nm
+won't allow the user to change.
+.Fl d ,
+.Fl q
+or
+.Fl x
+tells
+.Ic setty
+to act on the
+.Sq edit ,
+.Sq quote
+or
+.Sq execute
+set of tty modes respectively; defaulting to
+.Fl x .
+.Pp
+Without other arguments,
+.Ic setty
+lists the modes in the chosen set which are fixed on
+.Po
+.Sq +mode
+.Pc
+or off
+.Po
+.Sq -mode
+.Pc .
+.Fl a
+lists all tty modes in the chosen set regardless of the setting.
+With
+.Ar +mode ,
+.Ar -mode
+or
+.Ar mode ,
+fixes
+.Ar mode
+on or off or removes control of
+.Ar mode
+in the chosen set.
+.Pp
+.Ic Setty
+can also be used to set tty characters to particular values using
+.Ar char=value .
+If
+.Ar value
+is empty
+then the character is set to
+.Dv _POSIX_VDISABLE .
+.El
+.Sh EDITOR COMMANDS
+The following editor commands are available for use in key bindings:
+.\" Section automatically generated with makelist
+.Bl -tag -width 4n
+.It Ic vi-paste-next
+Vi paste previous deletion to the right of the cursor.
+.It Ic vi-paste-prev
+Vi paste previous deletion to the left of the cursor.
+.It Ic vi-prev-space-word
+Vi move to the previous space delimited word.
+.It Ic vi-prev-word
+Vi move to the previous word.
+.It Ic vi-next-space-word
+Vi move to the next space delimited word.
+.It Ic vi-next-word
+Vi move to the next word.
+.It Ic vi-change-case
+Vi change case of character under the cursor and advance one character.
+.It Ic vi-change-meta
+Vi change prefix command.
+.It Ic vi-insert-at-bol
+Vi enter insert mode at the beginning of line.
+.It Ic vi-replace-char
+Vi replace character under the cursor with the next character typed.
+.It Ic vi-replace-mode
+Vi enter replace mode.
+.It Ic vi-substitute-char
+Vi replace character under the cursor and enter insert mode.
+.It Ic vi-substitute-line
+Vi substitute entire line.
+.It Ic vi-change-to-eol
+Vi change to end of line.
+.It Ic vi-insert
+Vi enter insert mode.
+.It Ic vi-add
+Vi enter insert mode after the cursor.
+.It Ic vi-add-at-eol
+Vi enter insert mode at end of line.
+.It Ic vi-delete-meta
+Vi delete prefix command.
+.It Ic vi-end-word
+Vi move to the end of the current space delimited word.
+.It Ic vi-to-end-word
+Vi move to the end of the current word.
+.It Ic vi-undo
+Vi undo last change.
+.It Ic vi-command-mode
+Vi enter command mode (use alternative key bindings).
+.It Ic vi-zero
+Vi move to the beginning of line.
+.It Ic vi-delete-prev-char
+Vi move to previous character (backspace).
+.It Ic vi-list-or-eof
+Vi list choices for completion or indicate end of file if empty line.
+.It Ic vi-kill-line-prev
+Vi cut from beginning of line to cursor.
+.It Ic vi-search-prev
+Vi search history previous.
+.It Ic vi-search-next
+Vi search history next.
+.It Ic vi-repeat-search-next
+Vi repeat current search in the same search direction.
+.It Ic vi-repeat-search-prev
+Vi repeat current search in the opposite search direction.
+.It Ic vi-next-char
+Vi move to the character specified next.
+.It Ic vi-prev-char
+Vi move to the character specified previous.
+.It Ic vi-to-next-char
+Vi move up to the character specified next.
+.It Ic vi-to-prev-char
+Vi move up to the character specified previous.
+.It Ic vi-repeat-next-char
+Vi repeat current character search in the same search direction.
+.It Ic vi-repeat-prev-char
+Vi repeat current character search in the opposite search direction.
+.It Ic em-delete-or-list
+Delete character under cursor or list completions if at end of line.
+.It Ic em-delete-next-word
+Cut from cursor to end of current word.
+.It Ic em-yank
+Paste cut buffer at cursor position.
+.It Ic em-kill-line
+Cut the entire line and save in cut buffer.
+.It Ic em-kill-region
+Cut area between mark and cursor and save in cut buffer.
+.It Ic em-copy-region
+Copy area between mark and cursor to cut buffer.
+.It Ic em-gosmacs-transpose
+Exchange the two characters before the cursor.
+.It Ic em-next-word
+Move next to end of current word.
+.It Ic em-upper-case
+Uppercase the characters from cursor to end of current word.
+.It Ic em-capitol-case
+Capitalize the characters from cursor to end of current word.
+.It Ic em-lower-case
+Lowercase the characters from cursor to end of current word.
+.It Ic em-set-mark
+Set the mark at cursor.
+.It Ic em-exchange-mark
+Exchange the cursor and mark.
+.It Ic em-universal-argument
+Universal argument (argument times 4).
+.It Ic em-meta-next
+Add 8th bit to next character typed.
+.It Ic em-toggle-overwrite
+Switch from insert to overwrite mode or vice versa.
+.It Ic em-copy-prev-word
+Copy current word to cursor.
+.It Ic em-inc-search-next
+Emacs incremental next search.
+.It Ic em-inc-search-prev
+Emacs incremental reverse search.
+.It Ic ed-end-of-file
+Indicate end of file.
+.It Ic ed-insert
+Add character to the line.
+.It Ic ed-delete-prev-word
+Delete from beginning of current word to cursor.
+.It Ic ed-delete-next-char
+Delete character under cursor.
+.It Ic ed-kill-line
+Cut to the end of line.
+.It Ic ed-move-to-end
+Move cursor to the end of line.
+.It Ic ed-move-to-beg
+Move cursor to the beginning of line.
+.It Ic ed-transpose-chars
+Exchange the character to the left of the cursor with the one under it.
+.It Ic ed-next-char
+Move to the right one character.
+.It Ic ed-prev-word
+Move to the beginning of the current word.
+.It Ic ed-prev-char
+Move to the left one character.
+.It Ic ed-quoted-insert
+Add the next character typed verbatim.
+.It Ic ed-digit
+Adds to argument or enters a digit.
+.It Ic ed-argument-digit
+Digit that starts argument.
+.It Ic ed-unassigned
+Indicates unbound character.
+.It Ic ed-tty-sigint
+Tty interrupt character.
+.It Ic ed-tty-dsusp
+Tty delayed suspend character.
+.It Ic ed-tty-flush-output
+Tty flush output characters.
+.It Ic ed-tty-sigquit
+Tty quit character.
+.It Ic ed-tty-sigtstp
+Tty suspend character.
+.It Ic ed-tty-stop-output
+Tty disallow output characters.
+.It Ic ed-tty-start-output
+Tty allow output characters.
+.It Ic ed-newline
+Execute command.
+.It Ic ed-delete-prev-char
+Delete the character to the left of the cursor.
+.It Ic ed-clear-screen
+Clear screen leaving current line at the top.
+.It Ic ed-redisplay
+Redisplay everything.
+.It Ic ed-start-over
+Erase current line and start from scratch.
+.It Ic ed-sequence-lead-in
+First character in a bound sequence.
+.It Ic ed-prev-history
+Move to the previous history line.
+.It Ic ed-next-history
+Move to the next history line.
+.It Ic ed-search-prev-history
+Search previous in history for a line matching the current.
+.It Ic ed-search-next-history
+Search next in history for a line matching the current.
+.It Ic ed-prev-line
+Move up one line.
+.It Ic ed-next-line
+Move down one line.
+.It Ic ed-command
+Editline extended command.
+.El
+.\" End of section automatically generated with makelist
+.Sh FILES
+.Bl -tag -width "~/.editrcXXX"
+.It Pa ~/.editrc
+User configuration file for the
+.Xr editline 3
+library.
+.El
+.Sh SEE ALSO
+.Xr editline 3 ,
+.Xr regex 3 ,
+.Xr termcap 5
+.Sh AUTHORS
+The
+.Nm editline
+library was written by Christos Zoulas,
+and this manual was written by Luke Mewburn,
+with some sections inspired by
+.Xr tcsh 1 .