===================================================================
RCS file: /cvsrepo/anoncvs/cvs/src/usr.bin/less/version.c,v
retrieving revision 1.2
retrieving revision 1.3
diff -c -r1.2 -r1.3
*** src/usr.bin/less/version.c	2001/01/29 01:58:04	1.2
--- src/usr.bin/less/version.c	2003/04/13 18:26:26	1.3
***************
*** 1,506 ****
- /*	$OpenBSD: version.c,v 1.2 2001/01/29 01:58:04 niklas Exp $	*/
- 
  /*
!  * Copyright (c) 1984,1985,1989,1994,1995  Mark Nudelman
!  * All rights reserved.
   *
!  * 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 in the documentation and/or other materials provided with 
!  *    the distribution.
   *
!  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
   */
  
  
  /*
  ----------------------- CHANGE HISTORY --------------------------
  
!        1/29/84	Allowed use on standard input		
!        2/1/84	Added E, N, P commands			
!        4/17/84	Added '=' command, 'stop' signal handling	
!        4/20/84	Added line folding				
  v2     4/27/84	Fixed '=' command to use BOTTOM_PLUS_ONE,
! 		instead of TOP, added 'p' & 'v' commands	
! v3     5/3/84	Added -m and -t options, '-' command	
! v4     5/3/84	Added LESS environment variable		
! v5     5/3/84	New comments, fixed '-' command slightly	
! v6     5/15/84	Added -Q, visual bell			
  v7     5/24/84	Fixed jump_back(n) bug: n should count real
  		lines, not folded lines.  Also allow number on G command.
! v8     5/30/84	Re-do -q and -Q commands			
! v9     9/25/84	Added "+<cmd>" argument			
! v10    10/10/84	Fixed bug in -b<n> argument processing	
! v11    10/18/84	Made error() ring bell if \n not entered.	
  -----------------------------------------------------------------
  v12    2/13/85	Reorganized signal handling and made portable to 4.2bsd.
! v13    2/16/85	Reword error message for '-' command.	
! v14    2/22/85	Added -bf and -bp variants of -b.		
! v15    2/25/85	Miscellaneous changes.			
! v16    3/13/85	Added -u flag for backspace processing.	
! v17    4/13/85	Added j and k commands, changed -t default.			
! v18    4/20/85	Rewrote signal handling code.		
! v19    5/2/85	Got rid of "verbose" eq_message().		
  		Made search() scroll in some cases.
! v20    5/21/85	Fixed screen.c ioctls for System V.	
! v21    5/23/85	Fixed some first_cmd bugs.			
! v22    5/24/85	Added support for no RECOMP nor REGCMP.	
! v23    5/25/85	Miscellanous changes and prettying up.	
  		Posted to USENET.
  -----------------------------------------------------------------
  v24    6/3/85	Added ti,te terminal init & de-init.       
  		(Thanks to Mike Kersenbrock)
! v25    6/8/85	Added -U flag, standout mode underlining.	
! v26    6/9/85	Added -M flag.				
  		Use underline termcap (us) if it exists.
! v27    6/15/85	Renamed some variables to make unique in	
  		6 chars.  Minor fix to -m.
! v28    6/28/85	Fixed right margin bug.			
! v29    6/28/85	Incorporated M.Rose's changes to signal.c	
! v30    6/29/85	Fixed stupid bug in argument processing.	
  v31    7/15/85	Added -p flag, changed repaint algorithm.  
  		Added kludge for magic cookie terminals.
! v32    7/16/85	Added cat_file if output not a tty.	
! v33    7/23/85	Added -e flag and EDITOR.			
! v34    7/26/85	Added -s flag.				
! v35    7/27/85	Rewrote option handling; added option.c.	
! v36    7/29/85	Fixed -e flag to work if not last file.	
! v37    8/10/85	Added -x flag.				
! v38    8/19/85	Changed prompting; created prompt.c.	
! v39    8/24/85	(Not -p) does not initially clear screen.	
! v40    8/26/85	Added "skipping" indicator in forw().	
  		Posted to USENET.
  -----------------------------------------------------------------
! v41    9/17/85	ONLY_RETURN, control char commands,	
  		faster search, other minor fixes.
! v42    9/25/85	Added ++ command line syntax;		
  		ch_fsize for pipes.
! v43    10/15/85	Added -h flag, changed prim.c algorithms.	
! v44    10/16/85	Made END print in all cases of eof;	
  		ignore SIGTTOU after receiv ing SIGTSTP.
! v45    10/16/85	Never print backspaces unless -u.		
! v46    10/24/85	Backwards scroll in jump_loc.		
! v47    10/30/85	Fixed bug in edit(): *first_cmd==0		
! v48    11/16/85	Use TIOCSETN instead of TIOCSETP.		
  		Added marks (m and ' commands).
  		Posted to USENET.
  -----------------------------------------------------------------
! v49    1/9/86	Fixed bug: signal didn't clear mcc.	
! v50    1/15/86	Added ' (quote) to gomark.			
  v51    1/16/86	Added + cmd, fixed problem if first_cmd
  		fails, made g cmd sort of "work" on pipes
! 		ev en if bof is no longer buffered.		
! v52    1/17/86	Made short files work better.		
! v53    1/20/86	Added -P option.				
! v54    1/20/86	Changed help to use HELPFILE.		
! v55    1/23/86	Messages work better if not tty output.	
! v56    1/24/86	Added -l option.				
  v57    1/31/86	Fixed -l to get confirmation before
! 		ov erwriting an existing file.		
! v58    8/28/86	Added filename globbing.			
! v59    9/15/86	Fixed some bugs with very long filenames.	
  v60    9/26/86	Incorporated changes from Leith (Casey)
! 		Leedom for boldface and -z option.		
! v61    9/26/86	Got rid of annoying repaints after ! cmd.	
  		Posted to USENET.
  -----------------------------------------------------------------
  v62    12/23/86	Added is_directory(); change -z default to
  		-1 instead of 24; cat-and-exit if -e and
! 		file is less than a screenful.		
! v63    1/8/87	Fixed bug in cat-and-exit if > 1 file.	
  v64    1/12/87	Changed puts/putstr, putc/putchr,
  		getc/getchr to av oid name conflict with
! 		stdio functions.				
  v65    1/26/87	Allowed '-' command to change NUMBER
! 		v alued options (thanks to Gary Puckering)	
! v66    2/13/87	Fixed bug: prepaint should use force=1.	
! v67    2/24/87	Added !! and % expansion to ! command.	
  v68    2/25/87	Added SIGWINCH and TIOCGWINSZ support;
  		changed is_directory to bad_file.
! 		(thanks to J. Robert Ward)			
! v69    2/25/87	Added SIGWIND and WIOCGETD (for Unix PC).	
  v70    3/13/87	Changed help cmd from 'h' to 'H'; better
! 		error msgs in bad_file, errno_message.	
  v71    5/11/87	Changed -p to -c, made triple -c/-C
! 		for clear-eol like more's -c.		
! v72    6/26/87	Added -E, -L, use $SHELL in lsystem().	
  		(thanks to Stev e Spearman)
! v73    6/26/87	Allow Examine "#" for previous file.	
  		Posted to USENET 8/25/87.
  -----------------------------------------------------------------
! v74    9/18/87	Fix conflict in EOF symbol with stdio.h,	
  		Make os.c more portable to BSD.
! v75    9/23/87	Fix problems in get_term (thanks to 	
  		Paul Eggert); new backwards scrolling in
  		jump_loc (thanks to Marion Hakanson).
! v76    9/23/87	Added -i flag; allow single "!" to		
  		inv oke a shell (thanks to Franco Barber).
! v77    9/24/87	Added -n flag and line number support.	
! v78    9/25/87	Fixed problem with prompts longer than	
  		the screen width.
! v79    9/29/87	Added the _ command.			
! v80    10/6/87	Allow signal to break out of linenum scan.	
! v81    10/6/87	Allow -b to be changed from within less.	
! v82    10/7/87	Add cmd_decode to use a table for key	
  		binding (thanks to Dav id Nason).
! v83    10/9/87	Allow .less file for user-defined keys.	
! v84    10/11/87	Fix -e/-E problems (thanks to Felix Lee).	
! v85    10/15/87	Search now keeps track of line numbers.	
! v86    10/20/87	Added -B option and autobuf; fixed		
  		"pipe error" bug.
! v87    3/1/88	Fix bug re BSD signals while reading file.	
! v88    3/12/88	Use new format for -P option (thanks to	
  		der Mouse), allow "+-c" without message,
  		fix bug re BSD hangup.
! v89    3/18/88	Turn off line numbers if linenum scan	
  		is interrupted.
! v90    3/30/88	Allow -P from within less.			
! v91    3/30/88	Added tags file support (new -t option)	
  		(thanks to Brian Campbell).
! v92    4/4/88	Added -+option syntax.			
! v93    4/11/88	Add support for slow input (thanks to	
  		Joe Orost & apologies for taking almost
  		3 years to get this in!)
! v94    4/11/88	Redo reading/signal stuff.			
! v95    4/20/88	Repaint screen better after signal.	
! v96    4/21/88	Add /! and ?! commands.			
! v97    5/17/88	Allow -l/-L from within less.		
  		Eliminate some static arrays (use calloc).
  		Posted to USENET.
  -----------------------------------------------------------------
! v98    10/14/88	Fix incorrect calloc call; uninitialized	
  		var in exec_mca; core dump on unknown TERM.
  		Make v cmd work if past last line of file.
  		Fix some signal bugs.
! v99    10/29/88	Allow space between -X and string,		
  		when X is a string-valued option.
! v100   1/5/89	Fix globbing bug when $SHELL not set;	
  		allow spaces after -t command.
! v101   1/6/89	Fix problem with long (truncated) lines	
  		in tags file (thanks to Neil Dixon).
! v102   1/6/89	Fix bug with E# when no prev file;	
  		allow spaces after -l command.
! v103   3/14/89	Add -N, -f and -? options.  Add z and w	
  		commands.  Add %L for prompt strings.
! v104   3/16/89	Added EDITPROTO.				
! v105   3/20/89	Fix bug in find_linenum which cached	
  		incorrectly on long lines.
  v106   3/31/89	Added -k option and multiple lesskey      
  		files.
! v107   4/27/89	Add 8-bit char support and -g option.	
  		Split option code into 3 files.
  v108   5/5/89	Allocate position table dynamically       
  		(thanks to Paul Eggert); change % command
  		from "percent" to vi-style brace finder.
! v109   5/10/89	Added ESC-% command, split prim.c.	
! v110   5/24/89	Fixed bug in + option; fixed repaint bug	
  		under Sun windows (thanks to Paul Eggert).
! v111   5/25/89	Generalized # and % expansion; use 	
  		calloc for some error messages.
! v112   5/30/89	Get rid of ESC-%, add {}()[] commands.	
! v113   5/31/89	Optimize lseeks (thanks to Paul Eggert).	
! v114   7/25/89	Added ESC-/ and ESC-/! commands.		
! v115   7/26/89	Added ESC-n command.			
! v116   7/31/89	Added find_pos to optimize g command.	
! v117   8/1/89	Change -f option to -r.			
! v118   8/2/89	Save positions for all previous files,	
  		not just the immediately previous one.
! v119   8/7/89	Save marks across file boundaries.	
  		Add file handle stuff.
! v120   8/11/89	Add :ta command.				
! v121   8/16/89	Add -f option.				
! v122   8/30/89	Fix performance with many buffers.	
! v123   8/31/89	Verbose prompts for string options.	
  		Posted beta to USENET.
  -----------------------------------------------------------------
! v124   9/18/89	Reorganize search commands,		
  		N = rev, ESC-n = span, add ESC-N.
! v125   9/18/89	Fix tab bug (thanks to Alex Liu).		
  		Fix EOF bug when both -w and -c.
! v126   10/25/89	Add -j option.				
! v127   10/27/89	Fix problems with blank lines before BOF.	
! v128   10/27/89	Add %bj, etc. to prompt strings.		
! v129   11/3/89	Add -+,-- commands; add set-option and	
  		unset-option to lesskey.
! v130   11/6/89	Generalize A_EXTRA to string, remove	
  		set-option, unset-option from lesskey.
! v131   11/7/89	Changed name of EDITPROTO to LESSEDIT.	
! v132   11/8/89	Allow editing of command prefix.		
! v133   11/16/89	Add -y option (thanks to Jeff Sullivan).	
! v134   12/1/89	Glob filenames in the -l command.		
! v135   12/5/89	Combined {}()[] commands into one, and	
  		added ESC-^F and ESC-^B commands.
! v136   1/20/90	Added -S, -R flags.  Added | command.	
  		Added warning for binary files. (thanks
  		to Richard Brittain and J. Sullivan).
! v137   1/21/90	Rewrote horrible pappend code.		
  		Added * notation for hi-bit chars.
! v138   1/24/90	Fix magic cookie terminal handling.	
  		Get rid of "cleanup" loop in ch_get.
! v139   1/27/90	Added MSDOS support.  (many thanks	
  		to Richard Brittain).
! v140   2/7/90	Editing a new file adds it to the		
  		command line list.
! v141   2/8/90	Add edit_list for editing >1 file.	
! v142   2/10/90	Add :x command.				
! v143   2/11/90	Add * and @ modifies to search cmds.	
  		Change ESC-/ cmd from /@* to / *.
! v144   3/1/90	Messed around with ch_zero; 		
  		no real change.
! v145   3/2/90	Added -R and -v/-V for MSDOS;		
  		renamed FILENAME to avoid conflict.
! v146   3/5/90	Pull cmdbuf functions out of command.c	
! v147   3/7/90	Implement ?@; fix multi-file edit bugs.	
! v148   3/29/90	Fixed bug in :e<file> then :e#.		
! v149   4/3/90	Change error,ierror,query to use PARG.	
! v150   4/6/90	Add LESS_CHARSET, LESS_CHARDEF.		
! v151   4/13/90	Remove -g option; clean up ispipe.	
! v152   4/14/90	lsystem() closes input file, for		
  		editors which require exclusive open.
! v153   4/18/90	Fix bug if SHELL unset; 			
  		fix bug in overstrike control char.
! v154   4/25/90	Output to fd 2 via buffer.		
! v155   4/30/90	Ignore -i if uppercase in pattern		
  		(thanks to Michael Rendell.)
! v156   5/3/90	Remove scroll limits in forw() & back();	
  		causes problems with -c.
! v157   5/4/90	Forward search starts at next real line	
  		(not screen line) after jump target.
! v158   6/14/90	Added F command.				
! v159   7/29/90	Fix bug in exiting: output not flushed.	
! v160   7/29/90	Clear screen before initial output w/ -c.	
! v161   7/29/90	Add -T flag.				
! v162   8/14/90	Fix bug with +F on command line.		
! v163   8/21/90	Added LESSBINFMT variable.		
! v164   9/5/90	Added -p, LINES, COLUMNS and		
  		unset mark ' == BOF, for 1003.2 D5.
! v165   9/6/90	At EOF with -c set, don't display empty	
  		screen when try to page forward.
! v166   9/6/90	Fix G when final line in file wraps.	
! v167   9/11/90	Translate CR/LF -> LF for 1003.2.		
! v168   9/13/90	Return to curr file if "tag not found".	
! v169   12/12/90	G goes to EOF even if file has grown.	
! v170   1/17/91	Add optimization for BSD _setjmp;		
  		fix #include ioctl.h TERMIO problem.
  		(thanks to Paul Eggert)
  		Posted to USENET.
  -----------------------------------------------------------------
! v171   3/6/91	Fix -? bug in get_filename.		
! v172   3/15/91	Fix G bug in empty file.			
  		Fix bug with ?\n and -i and uppercase
  		pattern at EOF!
  		(thanks to Paul Eggert)
! v173   3/17/91	Change N cmd to not permanently change	
  		direction. (thanks to Brian Matthews)
! v174   3/18/91	Fix bug with namelogfile not getting	
  		cleared when change files.
! v175   3/18/91	Fix bug with ++cmd on command line.	
  		(thanks to Jim Meyering)
! v176   4/2/91	Change | to not force current screen,	
  		include marked line, start/end from
  		top of screen.  Improve search speed.
  		(thanks to Don Mears)
! v177   4/2/91	Add LESSHELP variable.			
  		Fix bug with F command with -e.
  		Try /dev/tty for input before using fd 2.
  		Patches posted to USENET  4/2/91.
  -----------------------------------------------------------------
! v178   4/8/91	Fixed bug in globbing logfile name.	
  		(thanks to Jim Meyering)
! v179   4/9/91	Allow negative -z for screen-relative.	
! v180   4/9/91	Clear to eos rather than eol if "db";	
  		don't use "sr" if "da".
  		(thanks to Tor Lillqvist)
! v181   4/18/91	Fixed bug with "negative" chars 80 - FF.	
  		(thanks to Benny Sander Hofmann)
! v182   5/16/91	Fixed bug with attribute at EOL.		
  		(thanks to Brian Matthews)
! v183   6/1/91	Rewrite linstall to do smart config.	
! v184   7/11/91	Process \b in searches based on -u	
  		rather than -i.
! v185   7/11/91	-Pxxx sets short prompt; assume SIGWINCH	
  		after a SIGSTOP. (thanks to Ken Laprade)
  -----------------------------------------------------------------
! v186   4/20/92	Port to MS-DOS (Microsoft C).		
! v187   4/23/92	Added -D option & TAB_COMPLETE_FILENAME.	
! v188   4/28/92	Added command line editing features.	
! v189   12/8/92	Fix mem overrun in anscreen.c:init; 	
  		fix edit_list to recover from bin file.
! v190   2/13/93	Make TAB enter one filename at a time;	
  		create ^L with old TAB functionality.
! v191   3/10/93	Defer creating "flash" page for MS-DOS.	
! v192   9/6/93	Add BACK-TAB.				
! v193   9/17/93	Simplify binary_file handling.		
! v194   1/4/94	Add rudiments of alt_filename handling.	
! v195   1/11/94	Port back to Unix; support keypad.	
  -----------------------------------------------------------------
! v196   6/7/94	Fix bug with bad filename; fix IFILE	
  		type problem. (thanks to David MacKenzie)
! v197   6/7/94	Fix bug with .less tables inserted wrong.	
! v198   6/23/94	Use autoconf installation technology.	
  		(thanks to David MacKenzie)
! v199   6/29/94	Fix MS-DOS build (thanks to Tim Wiegman).	
! v200   7/25/94	Clean up copyright, minor fixes.		
  	Posted to prep.ai.mit.edu
  -----------------------------------------------------------------
! v201   7/27/94	Check for no memcpy; add casts to calloc;	
  		look for regcmp in libgen.a.
  		(thanks to Kaveh Ghazi).
! v202   7/28/94	Fix bug in edit_next/edit_prev with 	
  		non-existant files.
! v203   8/2/94	Fix a variety of configuration bugs on	
  		various systems. (thanks to Sakai
  		Kiyotaka, Harald Koenig, Bjorn Brox,
  		Teemu Rantanen, and Thorsten Lockert)
! v204   8/3/94	Use strerror if available.		
  		(thanks to J.T. Conklin)
! v205   8/5/94	Fix bug in finding "me" termcap entry.	
  		(thanks to Andreas Stolcke)
! 8/10/94 	v205+: Change BUFSIZ to LBUFSIZE to avoid name	
  		conflict with stdio.h.
  		Posted to prep.ai.mit.edu
  -----------------------------------------------------------------
! v206   8/10/94	Use initial_scrpos for -t to avoid	
  		displaying first page before init().
  		(thanks to Dominique Petitpierre)
! v207   8/12/94	Fix bug if stdout is not tty.		
! v208   8/16/94	Fix bug in close_altfile if goto err1	
  		in edit_ifile. (Thanks to M.J. Hewitt)
! v209   8/16/94	Change scroll to wscroll to avoid 	
  		conflict with library function.
! v210   8/16/94	Fix bug with bold on 8 bit chars.		
  		(thanks to Vitor Duarte)
! v211   8/16/94	Don't quit on EOI in jump_loc / forw.	
! v212   8/18/94	Use time_t if available.			
! v213   8/20/94	Allow ospeed to be defined in termcap.h.	
! v214   8/20/94	Added HILITE_SEARCH, -F, ESC-u cmd.	
  		(thanks to Paul Lew and Bob Byrnes)
! v215   8/23/94	Fix -i toggle behavior.			
! v216   8/23/94	Process BS in all searches, not only -u.	
! v217   8/24/94	Added -X flag.				
! v218   8/24/94	Reimplement undo_search.			
! v219   8/24/94	Find tags marked with line number		
  		instead of pattern.
! v220   8/24/94	Stay at same position after SIG_WINCH.	
! v221   8/24/94	Fix bug in file percentage in big file.	
! v222   8/25/94	Do better if can't reopen current file.	
! v223   8/27/94	Support setlocale.			
  		(thanks to Robert Joop)
! v224   8/29/94	Revert v216: process BS in search		
  		only if -u.
! v225   9/6/94	Rewrite undo_search again: toggle.	
! v226   9/15/94	Configuration fixes. 			
  		(thanks to David MacKenzie)
! v227   9/19/94	Fixed strerror config problem.		
  		Posted to prep.ai.mit.edu
  -----------------------------------------------------------------
! v228   9/21/94	Fix bug in signals: repeated calls to	
  		get_editkeys overflowed st_edittable.
! v229   9/21/94	Fix "Nothing to search" error if -a	
  		and SRCH_PAST_EOF.
! v230   9/21/94	Don't print extra error msg in search	
  		after regerror().
! v231   9/22/94	Fix hilite bug if search matches 0 chars.	
  		(thanks to John Polstra)
! v232   9/23/94	Deal with weird systems that have 	
  		termios.h but not tcgetattr().
  		Posted to prep.ai.mit.edu
  -----------------------------------------------------------------
! v233   9/26/94	Use get_term() instead of pos_init() in	
  		psignals to re-get lower_left termcap.
  		(Thanks to John Malecki)
! v234   9/26/94	Make MIDDLE closer to middle of screen.	
! v235   9/27/94	Use local strchr if system doesn't have.	
! v236   9/28/94	Don't use libucb; use libterm if 		
  		libtermcap & libcurses doesn't work.
  		(Fix for Solaris; thanks to Frank Kaefer)
! v237   9/30/94	Use system isupper() etc if provided.	
  		Posted to prep.ai.mit.edu
  -----------------------------------------------------------------
! v238   10/6/94	Make binary non-blinking if LESSBINFMT	
  		is set to a string without a *.
! v239   10/7/94	Don't let delimit_word run back past	
  		beginning of cmdbuf.
! v240   10/10/94	Don't write into termcap buffer.		
  		(Thanks to Benoit Speckel)
! v241   10/13/94	New lesskey file format.			
  		Don't expand filenames in search command.
! v242   10/14/94	Allow lesskey specification of "literal".	
! v243   10/14/94	Add #stop command to lesskey.		
! v244   10/16/94	Add -f flag to lesskey.			
! v245   10/25/94	Allow TAB_COMPLETE_FILENAME to be undefd.	
! v246   10/27/94	Move help file to /usr/local/share.	
! v247   10/27/94	Add -V option.				
! v248   11/5/94	Add -V option to lesskey.			
! v249   11/5/94	Remove -f flag from lesskey; default	
  		input file is ~/.lesskey.in, not stdin.
! v250   11/7/94	Lesskey input file "-" means stdin.	
! v251   11/9/94	Convert cfgetospeed result to ospeed.	
  		(Thanks to Andrew Chernov)
! v252   11/16/94	Change default lesskey input file from 	
  		.lesskey.in to .lesskey.
  		Posted to prep.ai.mit.edu
  -----------------------------------------------------------------
! v253   11/21/94	Fix bug when tags file has a backslash.	
! v254   12/6/94	Fix -k option.				
! v255   12/8/94	Add #define EXAMINE to disable :e etc.	
! v256   12/10/94	Change highlighting: only highlite search	
  		results (but now it is reliable).
! v257   12/10/94	Add goto_line and repaint_highlight	
  		to optimize highlight repaints.
! v258   12/12/94	Fixup in hilite_line if BS_SPECIAL.	
! v259   12/12/94	Convert to autoconf 2.0.			
! v260   12/13/94	Add SECURE define.			
! v261   12/14/94	Use system WERASE char as EC_W_BACKSPACE.	
! v262   12/16/94	Add -g/-G flag and screen_hilite.		
! v263   12/20/94	Reimplement/optimize -G flag behavior.	
! v264   12/23/94	Allow EXTRA string after line-edit cmd	
  		in lesskey file.
! v265   12/24/94	Add LESSOPEN=|cmd syntax.			
! v266   12/26/94	Add -I flag.				
! v267   12/28/94	Formalize the four-byte header emitted	
  		by a LESSOPEN pipe.
! v268   12/28/94	Get rid of four-byte header.		
! v269   1/2/95	Close alt file before open new one.	
  		Avoids multiple popen().
! v270   1/3/95	Use VISUAL; use S_ISDIR/S_ISREG; fix	
  		config problem with Solaris POSIX regcomp.
! v271   1/4/95	Don't quit on read error.			
! v272   1/5/95	Get rid of -L.				
! v273   1/6/95	Fix ch_ungetchar bug; don't call		
  		LESSOPEN on a pipe.
! v274   1/6/95	Ported to OS/2 (thanks to Kai Uwe Rommel)	
! v275   1/18/95	Fix bug if toggle -G at EOF.		
! v276   1/30/95	Fix OS/2 version.				
! v277   1/31/95	Add "next" charset; don't display ^X 	
  		for X > 128.
! v278   2/14/95	Change default for -G.			
  		Posted to prep.ai.mit.edu
  -----------------------------------------------------------------
! v279   2/22/95	Add GNU options --help, --version.	
  		Minor config fixes.
! v280   2/24/95	Clean up calls to glob(); don't set #	
  		if we can't open the new file.
! v281   2/24/95	Repeat search should turn on hilites.	
! v282   3/2/95	Minor fixes.				
! v283   3/2/95	Fix homefile; make OS2 look in $HOME.	
! v284   3/2/95	Error if "v" on LESSOPENed file;		
  		"%" figures out file size on pipe.
! v285   3/7/95	Don't set # in lsystem; 			
  		lesskey try $HOME first.
  v286   3/7/95	Reformat change history (too much free time?).
  v287   3/8/95	Fix hilite bug if overstrike multiple chars.
--- 1,488 ----
  /*
!  * Copyright (C) 1984-2002  Mark Nudelman
   *
!  * You may distribute under the terms of either the GNU General Public
!  * License or the Less License, as specified in the README file.
   *
!  * For more information about less, or for information on how to 
!  * contact the author, see the README file.
   */
  
  
  /*
  ----------------------- CHANGE HISTORY --------------------------
  
!        1/29/84	Allowed use on standard input
!        2/1/84	Added E, N, P commands
!        4/17/84	Added '=' command, 'stop' signal handling
!        4/20/84	Added line folding
  v2     4/27/84	Fixed '=' command to use BOTTOM_PLUS_ONE,
! 		instead of TOP, added 'p' & 'v' commands
! v3     5/3/84	Added -m and -t options, '-' command
! v4     5/3/84	Added LESS environment variable
! v5     5/3/84	New comments, fixed '-' command slightly
! v6     5/15/84	Added -Q, visual bell
  v7     5/24/84	Fixed jump_back(n) bug: n should count real
  		lines, not folded lines.  Also allow number on G command.
! v8     5/30/84	Re-do -q and -Q commands
! v9     9/25/84	Added "+<cmd>" argument
! v10    10/10/84	Fixed bug in -b<n> argument processing
! v11    10/18/84	Made error() ring bell if \n not entered.
  -----------------------------------------------------------------
  v12    2/13/85	Reorganized signal handling and made portable to 4.2bsd.
! v13    2/16/85	Reword error message for '-' command.
! v14    2/22/85	Added -bf and -bp variants of -b.
! v15    2/25/85	Miscellaneous changes.
! v16    3/13/85	Added -u flag for backspace processing.
! v17    4/13/85	Added j and k commands, changed -t default.
! v18    4/20/85	Rewrote signal handling code.
! v19    5/2/85	Got rid of "verbose" eq_message().
  		Made search() scroll in some cases.
! v20    5/21/85	Fixed screen.c ioctls for System V.
! v21    5/23/85	Fixed some first_cmd bugs.
! v22    5/24/85	Added support for no RECOMP nor REGCMP.
! v23    5/25/85	Miscellanous changes and prettying up.
  		Posted to USENET.
  -----------------------------------------------------------------
  v24    6/3/85	Added ti,te terminal init & de-init.       
  		(Thanks to Mike Kersenbrock)
! v25    6/8/85	Added -U flag, standout mode underlining.
! v26    6/9/85	Added -M flag.
  		Use underline termcap (us) if it exists.
! v27    6/15/85	Renamed some variables to make unique in
  		6 chars.  Minor fix to -m.
! v28    6/28/85	Fixed right margin bug.
! v29    6/28/85	Incorporated M.Rose's changes to signal.c
! v30    6/29/85	Fixed stupid bug in argument processing.
  v31    7/15/85	Added -p flag, changed repaint algorithm.  
  		Added kludge for magic cookie terminals.
! v32    7/16/85	Added cat_file if output not a tty.
! v33    7/23/85	Added -e flag and EDITOR.
! v34    7/26/85	Added -s flag.
! v35    7/27/85	Rewrote option handling; added option.c.
! v36    7/29/85	Fixed -e flag to work if not last file.
! v37    8/10/85	Added -x flag.
! v38    8/19/85	Changed prompting; created prompt.c.
! v39    8/24/85	(Not -p) does not initially clear screen.
! v40    8/26/85	Added "skipping" indicator in forw().
  		Posted to USENET.
  -----------------------------------------------------------------
! v41    9/17/85	ONLY_RETURN, control char commands,
  		faster search, other minor fixes.
! v42    9/25/85	Added ++ command line syntax;
  		ch_fsize for pipes.
! v43    10/15/85	Added -h flag, changed prim.c algorithms.
! v44    10/16/85	Made END print in all cases of eof;
  		ignore SIGTTOU after receiv ing SIGTSTP.
! v45    10/16/85	Never print backspaces unless -u.
! v46    10/24/85	Backwards scroll in jump_loc.
! v47    10/30/85	Fixed bug in edit(): *first_cmd==0
! v48    11/16/85	Use TIOCSETN instead of TIOCSETP.
  		Added marks (m and ' commands).
  		Posted to USENET.
  -----------------------------------------------------------------
! v49    1/9/86	Fixed bug: signal didn't clear mcc.
! v50    1/15/86	Added ' (quote) to gomark.
  v51    1/16/86	Added + cmd, fixed problem if first_cmd
  		fails, made g cmd sort of "work" on pipes
! 		ev en if bof is no longer buffered.
! v52    1/17/86	Made short files work better.
! v53    1/20/86	Added -P option.
! v54    1/20/86	Changed help to use HELPFILE.
! v55    1/23/86	Messages work better if not tty output.
! v56    1/24/86	Added -l option.
  v57    1/31/86	Fixed -l to get confirmation before
! 		ov erwriting an existing file.
! v58    8/28/86	Added filename globbing.
! v59    9/15/86	Fixed some bugs with very long filenames.
  v60    9/26/86	Incorporated changes from Leith (Casey)
! 		Leedom for boldface and -z option.
! v61    9/26/86	Got rid of annoying repaints after ! cmd.
  		Posted to USENET.
  -----------------------------------------------------------------
  v62    12/23/86	Added is_directory(); change -z default to
  		-1 instead of 24; cat-and-exit if -e and
! 		file is less than a screenful.
! v63    1/8/87	Fixed bug in cat-and-exit if > 1 file.
  v64    1/12/87	Changed puts/putstr, putc/putchr,
  		getc/getchr to av oid name conflict with
! 		stdio functions.
  v65    1/26/87	Allowed '-' command to change NUMBER
! 		v alued options (thanks to Gary Puckering)
! v66    2/13/87	Fixed bug: prepaint should use force=1.
! v67    2/24/87	Added !! and % expansion to ! command.
  v68    2/25/87	Added SIGWINCH and TIOCGWINSZ support;
  		changed is_directory to bad_file.
! 		(thanks to J. Robert Ward)
! v69    2/25/87	Added SIGWIND and WIOCGETD (for Unix PC).
  v70    3/13/87	Changed help cmd from 'h' to 'H'; better
! 		error msgs in bad_file, errno_message.
  v71    5/11/87	Changed -p to -c, made triple -c/-C
! 		for clear-eol like more's -c.
! v72    6/26/87	Added -E, -L, use $SHELL in lsystem().
  		(thanks to Stev e Spearman)
! v73    6/26/87	Allow Examine "#" for previous file.
  		Posted to USENET 8/25/87.
  -----------------------------------------------------------------
! v74    9/18/87	Fix conflict in EOF symbol with stdio.h,
  		Make os.c more portable to BSD.
! v75    9/23/87	Fix problems in get_term (thanks to 
  		Paul Eggert); new backwards scrolling in
  		jump_loc (thanks to Marion Hakanson).
! v76    9/23/87	Added -i flag; allow single "!" to
  		inv oke a shell (thanks to Franco Barber).
! v77    9/24/87	Added -n flag and line number support.
! v78    9/25/87	Fixed problem with prompts longer than
  		the screen width.
! v79    9/29/87	Added the _ command.
! v80    10/6/87	Allow signal to break out of linenum scan.
! v81    10/6/87	Allow -b to be changed from within less.
! v82    10/7/87	Add cmd_decode to use a table for key
  		binding (thanks to Dav id Nason).
! v83    10/9/87	Allow .less file for user-defined keys.
! v84    10/11/87	Fix -e/-E problems (thanks to Felix Lee).
! v85    10/15/87	Search now keeps track of line numbers.
! v86    10/20/87	Added -B option and autobuf; fixed
  		"pipe error" bug.
! v87    3/1/88	Fix bug re BSD signals while reading file.
! v88    3/12/88	Use new format for -P option (thanks to
  		der Mouse), allow "+-c" without message,
  		fix bug re BSD hangup.
! v89    3/18/88	Turn off line numbers if linenum scan
  		is interrupted.
! v90    3/30/88	Allow -P from within less.
! v91    3/30/88	Added tags file support (new -t option)
  		(thanks to Brian Campbell).
! v92    4/4/88	Added -+option syntax.
! v93    4/11/88	Add support for slow input (thanks to
  		Joe Orost & apologies for taking almost
  		3 years to get this in!)
! v94    4/11/88	Redo reading/signal stuff.
! v95    4/20/88	Repaint screen better after signal.
! v96    4/21/88	Add /! and ?! commands.
! v97    5/17/88	Allow -l/-L from within less.
  		Eliminate some static arrays (use calloc).
  		Posted to USENET.
  -----------------------------------------------------------------
! v98    10/14/88	Fix incorrect calloc call; uninitialized
  		var in exec_mca; core dump on unknown TERM.
  		Make v cmd work if past last line of file.
  		Fix some signal bugs.
! v99    10/29/88	Allow space between -X and string,
  		when X is a string-valued option.
! v100   1/5/89	Fix globbing bug when $SHELL not set;
  		allow spaces after -t command.
! v101   1/6/89	Fix problem with long (truncated) lines
  		in tags file (thanks to Neil Dixon).
! v102   1/6/89	Fix bug with E# when no prev file;
  		allow spaces after -l command.
! v103   3/14/89	Add -N, -f and -? options.  Add z and w
  		commands.  Add %L for prompt strings.
! v104   3/16/89	Added EDITPROTO.
! v105   3/20/89	Fix bug in find_linenum which cached
  		incorrectly on long lines.
  v106   3/31/89	Added -k option and multiple lesskey      
  		files.
! v107   4/27/89	Add 8-bit char support and -g option.
  		Split option code into 3 files.
  v108   5/5/89	Allocate position table dynamically       
  		(thanks to Paul Eggert); change % command
  		from "percent" to vi-style brace finder.
! v109   5/10/89	Added ESC-% command, split prim.c.
! v110   5/24/89	Fixed bug in + option; fixed repaint bug
  		under Sun windows (thanks to Paul Eggert).
! v111   5/25/89	Generalized # and % expansion; use 
  		calloc for some error messages.
! v112   5/30/89	Get rid of ESC-%, add {}()[] commands.
! v113   5/31/89	Optimize lseeks (thanks to Paul Eggert).
! v114   7/25/89	Added ESC-/ and ESC-/! commands.
! v115   7/26/89	Added ESC-n command.
! v116   7/31/89	Added find_pos to optimize g command.
! v117   8/1/89	Change -f option to -r.
! v118   8/2/89	Save positions for all previous files,
  		not just the immediately previous one.
! v119   8/7/89	Save marks across file boundaries.
  		Add file handle stuff.
! v120   8/11/89	Add :ta command.
! v121   8/16/89	Add -f option.
! v122   8/30/89	Fix performance with many buffers.
! v123   8/31/89	Verbose prompts for string options.
  		Posted beta to USENET.
  -----------------------------------------------------------------
! v124   9/18/89	Reorganize search commands,
  		N = rev, ESC-n = span, add ESC-N.
! v125   9/18/89	Fix tab bug (thanks to Alex Liu).
  		Fix EOF bug when both -w and -c.
! v126   10/25/89	Add -j option.
! v127   10/27/89	Fix problems with blank lines before BOF.
! v128   10/27/89	Add %bj, etc. to prompt strings.
! v129   11/3/89	Add -+,-- commands; add set-option and
  		unset-option to lesskey.
! v130   11/6/89	Generalize A_EXTRA to string, remove
  		set-option, unset-option from lesskey.
! v131   11/7/89	Changed name of EDITPROTO to LESSEDIT.
! v132   11/8/89	Allow editing of command prefix.
! v133   11/16/89	Add -y option (thanks to Jeff Sullivan).
! v134   12/1/89	Glob filenames in the -l command.
! v135   12/5/89	Combined {}()[] commands into one, and
  		added ESC-^F and ESC-^B commands.
! v136   1/20/90	Added -S, -R flags.  Added | command.
  		Added warning for binary files. (thanks
  		to Richard Brittain and J. Sullivan).
! v137   1/21/90	Rewrote horrible pappend code.
  		Added * notation for hi-bit chars.
! v138   1/24/90	Fix magic cookie terminal handling.
  		Get rid of "cleanup" loop in ch_get.
! v139   1/27/90	Added MSDOS support.  (many thanks
  		to Richard Brittain).
! v140   2/7/90	Editing a new file adds it to the
  		command line list.
! v141   2/8/90	Add edit_list for editing >1 file.
! v142   2/10/90	Add :x command.
! v143   2/11/90	Add * and @ modifies to search cmds.
  		Change ESC-/ cmd from /@* to / *.
! v144   3/1/90	Messed around with ch_zero; 
  		no real change.
! v145   3/2/90	Added -R and -v/-V for MSDOS;
  		renamed FILENAME to avoid conflict.
! v146   3/5/90	Pull cmdbuf functions out of command.c
! v147   3/7/90	Implement ?@; fix multi-file edit bugs.
! v148   3/29/90	Fixed bug in :e<file> then :e#.
! v149   4/3/90	Change error,ierror,query to use PARG.
! v150   4/6/90	Add LESS_CHARSET, LESS_CHARDEF.
! v151   4/13/90	Remove -g option; clean up ispipe.
! v152   4/14/90	lsystem() closes input file, for
  		editors which require exclusive open.
! v153   4/18/90	Fix bug if SHELL unset; 
  		fix bug in overstrike control char.
! v154   4/25/90	Output to fd 2 via buffer.
! v155   4/30/90	Ignore -i if uppercase in pattern
  		(thanks to Michael Rendell.)
! v156   5/3/90	Remove scroll limits in forw() & back();
  		causes problems with -c.
! v157   5/4/90	Forward search starts at next real line
  		(not screen line) after jump target.
! v158   6/14/90	Added F command.
! v159   7/29/90	Fix bug in exiting: output not flushed.
! v160   7/29/90	Clear screen before initial output w/ -c.
! v161   7/29/90	Add -T flag.
! v162   8/14/90	Fix bug with +F on command line.
! v163   8/21/90	Added LESSBINFMT variable.
! v164   9/5/90	Added -p, LINES, COLUMNS and
  		unset mark ' == BOF, for 1003.2 D5.
! v165   9/6/90	At EOF with -c set, don't display empty
  		screen when try to page forward.
! v166   9/6/90	Fix G when final line in file wraps.
! v167   9/11/90	Translate CR/LF -> LF for 1003.2.
! v168   9/13/90	Return to curr file if "tag not found".
! v169   12/12/90	G goes to EOF even if file has grown.
! v170   1/17/91	Add optimization for BSD _setjmp;
  		fix #include ioctl.h TERMIO problem.
  		(thanks to Paul Eggert)
  		Posted to USENET.
  -----------------------------------------------------------------
! v171   3/6/91	Fix -? bug in get_filename.
! v172   3/15/91	Fix G bug in empty file.
  		Fix bug with ?\n and -i and uppercase
  		pattern at EOF!
  		(thanks to Paul Eggert)
! v173   3/17/91	Change N cmd to not permanently change
  		direction. (thanks to Brian Matthews)
! v174   3/18/91	Fix bug with namelogfile not getting
  		cleared when change files.
! v175   3/18/91	Fix bug with ++cmd on command line.
  		(thanks to Jim Meyering)
! v176   4/2/91	Change | to not force current screen,
  		include marked line, start/end from
  		top of screen.  Improve search speed.
  		(thanks to Don Mears)
! v177   4/2/91	Add LESSHELP variable.
  		Fix bug with F command with -e.
  		Try /dev/tty for input before using fd 2.
  		Patches posted to USENET  4/2/91.
  -----------------------------------------------------------------
! v178   4/8/91	Fixed bug in globbing logfile name.
  		(thanks to Jim Meyering)
! v179   4/9/91	Allow negative -z for screen-relative.
! v180   4/9/91	Clear to eos rather than eol if "db";
  		don't use "sr" if "da".
  		(thanks to Tor Lillqvist)
! v181   4/18/91	Fixed bug with "negative" chars 80 - FF.
  		(thanks to Benny Sander Hofmann)
! v182   5/16/91	Fixed bug with attribute at EOL.
  		(thanks to Brian Matthews)
! v183   6/1/91	Rewrite linstall to do smart config.
! v184   7/11/91	Process \b in searches based on -u
  		rather than -i.
! v185   7/11/91	-Pxxx sets short prompt; assume SIGWINCH
  		after a SIGSTOP. (thanks to Ken Laprade)
  -----------------------------------------------------------------
! v186   4/20/92	Port to MS-DOS (Microsoft C).
! v187   4/23/92	Added -D option & TAB_COMPLETE_FILENAME.
! v188   4/28/92	Added command line editing features.
! v189   12/8/92	Fix mem overrun in anscreen.c:init; 
  		fix edit_list to recover from bin file.
! v190   2/13/93	Make TAB enter one filename at a time;
  		create ^L with old TAB functionality.
! v191   3/10/93	Defer creating "flash" page for MS-DOS.
! v192   9/6/93	Add BACK-TAB.
! v193   9/17/93	Simplify binary_file handling.
! v194   1/4/94	Add rudiments of alt_filename handling.
! v195   1/11/94	Port back to Unix; support keypad.
  -----------------------------------------------------------------
! v196   6/7/94	Fix bug with bad filename; fix IFILE
  		type problem. (thanks to David MacKenzie)
! v197   6/7/94	Fix bug with .less tables inserted wrong.
! v198   6/23/94	Use autoconf installation technology.
  		(thanks to David MacKenzie)
! v199   6/29/94	Fix MS-DOS build (thanks to Tim Wiegman).
! v200   7/25/94	Clean up copyright, minor fixes.
  	Posted to prep.ai.mit.edu
  -----------------------------------------------------------------
! v201   7/27/94	Check for no memcpy; add casts to calloc;
  		look for regcmp in libgen.a.
  		(thanks to Kaveh Ghazi).
! v202   7/28/94	Fix bug in edit_next/edit_prev with 
  		non-existant files.
! v203   8/2/94	Fix a variety of configuration bugs on
  		various systems. (thanks to Sakai
  		Kiyotaka, Harald Koenig, Bjorn Brox,
  		Teemu Rantanen, and Thorsten Lockert)
! v204   8/3/94	Use strerror if available.
  		(thanks to J.T. Conklin)
! v205   8/5/94	Fix bug in finding "me" termcap entry.
  		(thanks to Andreas Stolcke)
! 8/10/94 	v205+: Change BUFSIZ to LBUFSIZE to avoid name
  		conflict with stdio.h.
  		Posted to prep.ai.mit.edu
  -----------------------------------------------------------------
! v206   8/10/94	Use initial_scrpos for -t to avoid
  		displaying first page before init().
  		(thanks to Dominique Petitpierre)
! v207   8/12/94	Fix bug if stdout is not tty.
! v208   8/16/94	Fix bug in close_altfile if goto err1
  		in edit_ifile. (Thanks to M.J. Hewitt)
! v209   8/16/94	Change scroll to wscroll to avoid 
  		conflict with library function.
! v210   8/16/94	Fix bug with bold on 8 bit chars.
  		(thanks to Vitor Duarte)
! v211   8/16/94	Don't quit on EOI in jump_loc / forw.
! v212   8/18/94	Use time_t if available.
! v213   8/20/94	Allow ospeed to be defined in termcap.h.
! v214   8/20/94	Added HILITE_SEARCH, -F, ESC-u cmd.
  		(thanks to Paul Lew and Bob Byrnes)
! v215   8/23/94	Fix -i toggle behavior.
! v216   8/23/94	Process BS in all searches, not only -u.
! v217   8/24/94	Added -X flag.
! v218   8/24/94	Reimplement undo_search.
! v219   8/24/94	Find tags marked with line number
  		instead of pattern.
! v220   8/24/94	Stay at same position after SIG_WINCH.
! v221   8/24/94	Fix bug in file percentage in big file.
! v222   8/25/94	Do better if can't reopen current file.
! v223   8/27/94	Support setlocale.
  		(thanks to Robert Joop)
! v224   8/29/94	Revert v216: process BS in search
  		only if -u.
! v225   9/6/94	Rewrite undo_search again: toggle.
! v226   9/15/94	Configuration fixes. 
  		(thanks to David MacKenzie)
! v227   9/19/94	Fixed strerror config problem.
  		Posted to prep.ai.mit.edu
  -----------------------------------------------------------------
! v228   9/21/94	Fix bug in signals: repeated calls to
  		get_editkeys overflowed st_edittable.
! v229   9/21/94	Fix "Nothing to search" error if -a
  		and SRCH_PAST_EOF.
! v230   9/21/94	Don't print extra error msg in search
  		after regerror().
! v231   9/22/94	Fix hilite bug if search matches 0 chars.
  		(thanks to John Polstra)
! v232   9/23/94	Deal with weird systems that have 
  		termios.h but not tcgetattr().
  		Posted to prep.ai.mit.edu
  -----------------------------------------------------------------
! v233   9/26/94	Use get_term() instead of pos_init() in
  		psignals to re-get lower_left termcap.
  		(Thanks to John Malecki)
! v234   9/26/94	Make MIDDLE closer to middle of screen.
! v235   9/27/94	Use local strchr if system doesn't have.
! v236   9/28/94	Don't use libucb; use libterm if 
  		libtermcap & libcurses doesn't work.
  		(Fix for Solaris; thanks to Frank Kaefer)
! v237   9/30/94	Use system isupper() etc if provided.
  		Posted to prep.ai.mit.edu
  -----------------------------------------------------------------
! v238   10/6/94	Make binary non-blinking if LESSBINFMT
  		is set to a string without a *.
! v239   10/7/94	Don't let delimit_word run back past
  		beginning of cmdbuf.
! v240   10/10/94	Don't write into termcap buffer.
  		(Thanks to Benoit Speckel)
! v241   10/13/94	New lesskey file format.
  		Don't expand filenames in search command.
! v242   10/14/94	Allow lesskey specification of "literal".
! v243   10/14/94	Add #stop command to lesskey.
! v244   10/16/94	Add -f flag to lesskey.
! v245   10/25/94	Allow TAB_COMPLETE_FILENAME to be undefd.
! v246   10/27/94	Move help file to /usr/local/share.
! v247   10/27/94	Add -V option.
! v248   11/5/94	Add -V option to lesskey.
! v249   11/5/94	Remove -f flag from lesskey; default
  		input file is ~/.lesskey.in, not stdin.
! v250   11/7/94	Lesskey input file "-" means stdin.
! v251   11/9/94	Convert cfgetospeed result to ospeed.
  		(Thanks to Andrew Chernov)
! v252   11/16/94	Change default lesskey input file from 
  		.lesskey.in to .lesskey.
  		Posted to prep.ai.mit.edu
  -----------------------------------------------------------------
! v253   11/21/94	Fix bug when tags file has a backslash.
! v254   12/6/94	Fix -k option.
! v255   12/8/94	Add #define EXAMINE to disable :e etc.
! v256   12/10/94	Change highlighting: only highlite search
  		results (but now it is reliable).
! v257   12/10/94	Add goto_line and repaint_highlight
  		to optimize highlight repaints.
! v258   12/12/94	Fixup in hilite_line if BS_SPECIAL.
! v259   12/12/94	Convert to autoconf 2.0.
! v260   12/13/94	Add SECURE define.
! v261   12/14/94	Use system WERASE char as EC_W_BACKSPACE.
! v262   12/16/94	Add -g/-G flag and screen_hilite.
! v263   12/20/94	Reimplement/optimize -G flag behavior.
! v264   12/23/94	Allow EXTRA string after line-edit cmd
  		in lesskey file.
! v265   12/24/94	Add LESSOPEN=|cmd syntax.
! v266   12/26/94	Add -I flag.
! v267   12/28/94	Formalize the four-byte header emitted
  		by a LESSOPEN pipe.
! v268   12/28/94	Get rid of four-byte header.
! v269   1/2/95	Close alt file before open new one.
  		Avoids multiple popen().
! v270   1/3/95	Use VISUAL; use S_ISDIR/S_ISREG; fix
  		config problem with Solaris POSIX regcomp.
! v271   1/4/95	Don't quit on read error.
! v272   1/5/95	Get rid of -L.
! v273   1/6/95	Fix ch_ungetchar bug; don't call
  		LESSOPEN on a pipe.
! v274   1/6/95	Ported to OS/2 (thanks to Kai Uwe Rommel)
! v275   1/18/95	Fix bug if toggle -G at EOF.
! v276   1/30/95	Fix OS/2 version.
! v277   1/31/95	Add "next" charset; don't display ^X 
  		for X > 128.
! v278   2/14/95	Change default for -G.
  		Posted to prep.ai.mit.edu
  -----------------------------------------------------------------
! v279   2/22/95	Add GNU options --help, --version.
  		Minor config fixes.
! v280   2/24/95	Clean up calls to glob(); don't set #
  		if we can't open the new file.
! v281   2/24/95	Repeat search should turn on hilites.
! v282   3/2/95	Minor fixes.
! v283   3/2/95	Fix homefile; make OS2 look in $HOME.
! v284   3/2/95	Error if "v" on LESSOPENed file;
  		"%" figures out file size on pipe.
! v285   3/7/95	Don't set # in lsystem; 
  		lesskey try $HOME first.
  v286   3/7/95	Reformat change history (too much free time?).
  v287   3/8/95	Fix hilite bug if overstrike multiple chars.
***************
*** 509,515 ****
  		hilite_line more than once.
  v290   3/9/95	Make configure automatically.  Fix Sequent problem
  		with incompatible sigsetmask().
! 
  */
  
! char version[] = "290";
--- 491,649 ----
  		hilite_line more than once.
  v290   3/9/95	Make configure automatically.  Fix Sequent problem
  		with incompatible sigsetmask().
! 		Posted to prep.ai.mit.edu
! -----------------------------------------------------------------
! v291   3/21/95	Add #env to lesskey.  Fix MS-DOS build.
! 		Posted to simtel.
! -----------------------------------------------------------------
! v292   4/24/95	Add MS-DOS support for Borland C.
! 		Fix arrow keys in MS-DOS versions.
! v293   4/28/95	Add auto-versioning stuff to make dist.
! v294   5/12/95	Fix Borland build.
! v295   1/20/96	Fix search on squished file; add /@@.
! v296   1/23/96	Allow cmdbuf larger than screen width.
! v297   1/24/96	Don't call termcap if tgetent fails; 
! 		add #defines for buffers.
! v298   1/24/96	Change @@ to ^K.  
! 		Add alternate search modifiers ^N, ^F, ^E.
! v299   1/25/96	Fix percent overflow in jump_percent (thanks to Brent Wiese);
! 		don't send "ti" after shell command till RETURN pressed.
! v300   1/25/96	Change -U to print tabs as ^I.
! v301   1/30/96	Make hilites work in cmd F output.
! v302   1/31/96	Fix cmd F to notice window-change signals.
! v303   1/31/96	Add ESC-SPACE command.
! v304   2/1/96	Add ^R search modifier; add LESSSECURE.
! v305   2/2/96	Workaround Linux /proc kernel bug; add LESSKEY.
! v306   3/16/96	Minor fixes.
! v307   3/25/96	Allow cmd line arg "--"; fix DOS & OS/2 defines.h.
! v308   4/4/96	Port to OS-9 (thanks to Boisy Pitre); fix -d.
! v309   4/9/96	Fix OS-9 version; fix tags bug with "$".
! v310   4/10/96	Get rid of HELPFILE.
! v311   4/22/96	Add Windows32 support; merge doscreen.c into screen.c.
! v312   4/24/96	Don't quit after "cannot reopen" error.
! v313   4/25/96	Added horizontal scrolling.
! v314   4/26/96	Modified -e to quit on reaching end of a squished file.
! v315   4/26/96	Fix "!;TAB" bug.
! v316   5/2/96	Make "|a" when (a < curr screen) go to end of curr screen.
! v317   5/14/96	Various fixes for the MS-DOS and OS/2 builds.
! 		Added ## and %% handling for filenames
! v318   5/29/96	Port to OS-9 Microware compiler; minor fixes 
! 		(thanks to Martin Gregorie).
! v319   7/8/96	Fix Windows port (thanks to Jeff Paquette).
! v320   7/11/96	Final fixes for Windows port.
! v321   7/18/96	Minor fixes.
! 		Posted to Web page.
! -----------------------------------------------------------------
! v322   8/13/96	Fix bug in shell escape from help file; add support for 
! 		Microsoft Visual C under Windows; numerous small fixes.
! v323   8/19/96	Fixes for Windows version (thanks to Simon Munton);
! 		fix for Linux library weirdness (thanks to Jim Diamond);
! 		port to DJGPP (thanks to Eli Zaretskii).
! v324   8/21/96	Add support for spaces in filenames (thanks to Simon Munton).
! v325   8/21/96	Add lessecho, for spaces in filenames under Unix.
! v326   8/27/96	Fix DJGPP version.
! v327   9/1/96	Reorganize lglob, make spaces in filenames work better in Unix.
! v328   10/7/96	Append / to directory name in filename completion.
! 		Fix MS-DOS and OS-9 versions.
! v329   10/11/96	Fix more MS-DOS bugs; add LESSSEPARATOR; add -" option.
! 		Add LESSMETACHARS, LESSMETAESCAPE.
! v330   10/21/96	Minor fixes.
! 		Posted to Web page.
! -----------------------------------------------------------------
! v331   4/22/97	Various Windows fixes (thanks to Gurusamy Sarathy).
! v332   4/22/97	Enter filenames from cmd line into edit history.
! 		Posted to Web page.
! -----------------------------------------------------------------
! v333    3/4/99	Changed -w to highlite new line after forward movement.
! v334    3/9/99	Avoid overflowing prompt buffer; add %d and %D.
! v335   3/20/99	Add EBCDIC support (thanks to Thomas Dorner).
!               	Use HOMEDRIVE/HOMEPATH on Windows (thanks to Preston Bannister).
! 		Posted to Web page.
! -----------------------------------------------------------------
! v336    4/8/99	Fix installation bugs.
! v337    4/9/99	Fix another installation bug.
! 		Posted to Web page.
! -----------------------------------------------------------------
! v338   4/13/99	Add support for long option names.
! v339   4/18/99	Add \k, long option names to lesskey.  Add -^P.  Add :d.
! v340   4/21/99	Add regexec2.  Fix Windows build.
! 		Posted to Web page.
! -----------------------------------------------------------------
! v341    5/6/99  Add -F option; %c & ?c prompt escapes.
! 		(Thanks to Michele Maltoni)
! v342   7/22/99  Add system-wide lesskey file; allow GPL or Less License.
! v343   9/23/99	Support UTF-8 (Thanks to Robert Brady).
! 		Add %P and ?P in prompts.
! v344  10/27/99	-w highlights target line of g and p commands.
! v345  10/29/99	Make -R pass thru ESC but not other control chars.
! 		Posted to Web page.
! -----------------------------------------------------------------
! v346   11/4/99  Fix bugs in long option processing; R cmd should clear hilites.
! 		Posted to Web page.
! -----------------------------------------------------------------
! v347  12/13/99	Fixes for DJGPP version (thanks to Eli Zaretskii).
! v348  12/28/99	Fix deleting file with marks (thanks to Dimitar Jekov).
! 		Fix color problem in DJGPP version (thanks to Eli Zaretskii).
! v349   1/24/00	Fix minor DJGPP bugs; check environment vars for UTF-8;
! 		add --with-editor (thanks to Eli, Markus Kuhn, Thomas Schoepf).
! v350   3/1/00	Fix clear-while-standout bug.
! v351   3/5/00	Change -M and = prompts to show top & bottom line number.
! 		Posted to Web page.
! -----------------------------------------------------------------
! v352   3/8/00	Fix scan_option NULL dereference.
! -----------------------------------------------------------------
! v353   3/20/00	Fix SECURE compile bug, allow space after numeric option.
! v354   3/23/00	Add support for PCRE; add --with-regex configure option.
! -----------------------------------------------------------------
! v355   6/28/00	Add -# option (thanks to Andy Levinson).
! v356   7/5/00	Add -J option.
! v357   7/6/00	Support sigprocmask.
! -----------------------------------------------------------------
! v358   7/8/00	Fix problems with #stop in lesskey file.
! 		Posted to Web page.
! -----------------------------------------------------------------
! v359  9/10/00	Fixes for Win32 display problems (thanks to Maurizio Vairani).
! v360  1/17/01	Move sysless to etc.
! v361  12/4/01	Add IBM-1047 charset & EBCDIC fixes (thanks to Thomas Dorner).
! 		Fix 32 bit dependencies (thanks to Paul Eggert).
! 		Fix UTF-8 overstriking (thanks to Robert Brady).
! v362  12/4/01	Make status column show search targets.
! v363  12/6/01	Add --no-keypad option.
! 		Add variable width tabstops (thanks to Peter Samuelson).
! v364 12/10/01	Better handling of very long lines in input;
! 		Fix horizontal shifting of colored text.
! v365 12/11/01	Fix overstriking of tabs;
! 		Add support for global(1) and multiple tag matches
! 		(thanks to Shigio Yamaguchi and Tim Vanderhoek).
! v366 12/11/01	Fixes for OS/2 (thanks to Kyosuke Tokoro).
! v367 12/13/01	Allow -D and -x options to terminate without dollar sign;
! 		Right/left arrow when entering N are shift cmds, not line edit.
! v368 12/18/01	Update lesskey commands.
! v370 12/23/01	Fix tags error messages.
! 		Posted to Web page.
! -----------------------------------------------------------------
! v371 12/26/01	Fix new_file bug; use popen in Windows version;
! 		fix some compiler warnings.
! v372 12/29/01	Make -b be in units of 1K.
! v373  1/14/02	Improve handling of filenames containing shell metachars.
! v374   2/7/02	Fix memory leak; fix bug in -x argument parsing.
! v375   4/7/02	Fix searching for SGR sequences; fix SECURE build;
! 		add SGR support to DJGPP version (thanks to Eli Zaretskii).
! v376  6/10/02	Fix bug in overstriking mulitbyte UTF-8 characters
! 		(thanks to Jungshik Shin).
! 		Posted to Web page.
! -----------------------------------------------------------------
! v377  9/10/02	Fix bug in Windows version when file contains CR;
! 		fix bug in search highlights with -R;
! 		make initial buffer limit really be 64K not unlimited.
! v378  9/30/02	Misc bug fixes and compiler warning cleanup.
! 		Posted to Web page.
! -----------------------------------------------------------------
! v379 11/23/02	Add -L option; fix bug with ctrl-K in lesskey files;
! 		improve UTF-8 overstriking and underscore overstriking;
! 		fix minor man page problems; change to autoconf 2.54.
! v380 11/24/02	Make LINENUM same as POSITION.
! v381 11/28/02	Make -N use 7 columns for line number if possible.
  */
  
! char version[] = "381";