858 lines
44 KiB
C
858 lines
44 KiB
C
/*
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* Copyright (C) 1984-2017 Mark Nudelman
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*
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* You may distribute under the terms of either the GNU General Public
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* License or the Less License, as specified in the README file.
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*
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* For more information, see the README file.
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*/
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/*
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----------------------- CHANGE HISTORY --------------------------
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1/29/84 Allowed use on standard input
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2/1/84 Added E, N, P commands
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4/17/84 Added '=' command, 'stop' signal handling
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4/20/84 Added line folding
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v2 4/27/84 Fixed '=' command to use BOTTOM_PLUS_ONE,
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instead of TOP, added 'p' & 'v' commands
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v3 5/3/84 Added -m and -t options, '-' command
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v4 5/3/84 Added LESS environment variable
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v5 5/3/84 New comments, fixed '-' command slightly
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v6 5/15/84 Added -Q, visual bell
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v7 5/24/84 Fixed jump_back(n) bug: n should count real
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lines, not folded lines. Also allow number on G command.
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v8 5/30/84 Re-do -q and -Q commands
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v9 9/25/84 Added "+<cmd>" argument
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v10 10/10/84 Fixed bug in -b<n> argument processing
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v11 10/18/84 Made error() ring bell if \n not entered.
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-----------------------------------------------------------------
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v12 2/13/85 Reorganized signal handling and made portable to 4.2bsd.
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v13 2/16/85 Reword error message for '-' command.
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v14 2/22/85 Added -bf and -bp variants of -b.
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v15 2/25/85 Miscellaneous changes.
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v16 3/13/85 Added -u flag for backspace processing.
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v17 4/13/85 Added j and k commands, changed -t default.
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v18 4/20/85 Rewrote signal handling code.
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v19 5/2/85 Got rid of "verbose" eq_message().
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Made search() scroll in some cases.
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v20 5/21/85 Fixed screen.c ioctls for System V.
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v21 5/23/85 Fixed some first_cmd bugs.
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v22 5/24/85 Added support for no RECOMP nor REGCMP.
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v23 5/25/85 Miscellanous changes and prettying up.
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Posted to USENET.
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-----------------------------------------------------------------
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v24 6/3/85 Added ti,te terminal init & de-init.
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(Thanks to Mike Kersenbrock)
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v25 6/8/85 Added -U flag, standout mode underlining.
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v26 6/9/85 Added -M flag.
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Use underline termcap (us) if it exists.
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v27 6/15/85 Renamed some variables to make unique in
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6 chars. Minor fix to -m.
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v28 6/28/85 Fixed right margin bug.
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v29 6/28/85 Incorporated M.Rose's changes to signal.c
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v30 6/29/85 Fixed stupid bug in argument processing.
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v31 7/15/85 Added -p flag, changed repaint algorithm.
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Added kludge for magic cookie terminals.
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v32 7/16/85 Added cat_file if output not a tty.
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v33 7/23/85 Added -e flag and EDITOR.
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v34 7/26/85 Added -s flag.
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v35 7/27/85 Rewrote option handling; added option.c.
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v36 7/29/85 Fixed -e flag to work if not last file.
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v37 8/10/85 Added -x flag.
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v38 8/19/85 Changed prompting; created prompt.c.
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v39 8/24/85 (Not -p) does not initially clear screen.
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v40 8/26/85 Added "skipping" indicator in forw().
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Posted to USENET.
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-----------------------------------------------------------------
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v41 9/17/85 ONLY_RETURN, control char commands,
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faster search, other minor fixes.
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v42 9/25/85 Added ++ command line syntax;
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ch_fsize for pipes.
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v43 10/15/85 Added -h flag, changed prim.c algorithms.
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v44 10/16/85 Made END print in all cases of eof;
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ignore SIGTTOU after receiv ing SIGTSTP.
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v45 10/16/85 Never print backspaces unless -u.
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v46 10/24/85 Backwards scroll in jump_loc.
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v47 10/30/85 Fixed bug in edit(): *first_cmd==0
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v48 11/16/85 Use TIOCSETN instead of TIOCSETP.
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Added marks (m and ' commands).
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Posted to USENET.
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-----------------------------------------------------------------
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v49 1/9/86 Fixed bug: signal didn't clear mcc.
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v50 1/15/86 Added ' (quote) to gomark.
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v51 1/16/86 Added + cmd, fixed problem if first_cmd
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fails, made g cmd sort of "work" on pipes
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ev en if bof is no longer buffered.
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v52 1/17/86 Made short files work better.
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v53 1/20/86 Added -P option.
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v54 1/20/86 Changed help to use HELPFILE.
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v55 1/23/86 Messages work better if not tty output.
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v56 1/24/86 Added -l option.
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v57 1/31/86 Fixed -l to get confirmation before
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ov erwriting an existing file.
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v58 8/28/86 Added filename globbing.
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v59 9/15/86 Fixed some bugs with very long filenames.
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v60 9/26/86 Incorporated changes from Leith (Casey)
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Leedom for boldface and -z option.
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v61 9/26/86 Got rid of annoying repaints after ! cmd.
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Posted to USENET.
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-----------------------------------------------------------------
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v62 12/23/86 Added is_directory(); change -z default to
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-1 instead of 24; cat-and-exit if -e and
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file is less than a screenful.
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v63 1/8/87 Fixed bug in cat-and-exit if > 1 file.
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v64 1/12/87 Changed puts/putstr, putc/putchr,
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getc/getchr to av oid name conflict with
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stdio functions.
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v65 1/26/87 Allowed '-' command to change NUMBER
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v alued options (thanks to Gary Puckering)
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v66 2/13/87 Fixed bug: prepaint should use force=1.
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v67 2/24/87 Added !! and % expansion to ! command.
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v68 2/25/87 Added SIGWINCH and TIOCGWINSZ support;
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changed is_directory to bad_file.
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(thanks to J. Robert Ward)
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v69 2/25/87 Added SIGWIND and WIOCGETD (for Unix PC).
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v70 3/13/87 Changed help cmd from 'h' to 'H'; better
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error msgs in bad_file, errno_message.
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v71 5/11/87 Changed -p to -c, made triple -c/-C
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for clear-eol like more's -c.
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v72 6/26/87 Added -E, -L, use $SHELL in lsystem().
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(thanks to Stev e Spearman)
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v73 6/26/87 Allow Examine "#" for previous file.
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Posted to USENET 8/25/87.
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-----------------------------------------------------------------
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v74 9/18/87 Fix conflict in EOF symbol with stdio.h,
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Make os.c more portable to BSD.
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v75 9/23/87 Fix problems in get_term (thanks to
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Paul Eggert); new backwards scrolling in
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jump_loc (thanks to Marion Hakanson).
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v76 9/23/87 Added -i flag; allow single "!" to
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inv oke a shell (thanks to Franco Barber).
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v77 9/24/87 Added -n flag and line number support.
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v78 9/25/87 Fixed problem with prompts longer than
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the screen width.
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v79 9/29/87 Added the _ command.
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v80 10/6/87 Allow signal to break out of linenum scan.
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v81 10/6/87 Allow -b to be changed from within less.
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v82 10/7/87 Add cmd_decode to use a table for key
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binding (thanks to Dav id Nason).
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v83 10/9/87 Allow .less file for user-defined keys.
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v84 10/11/87 Fix -e/-E problems (thanks to Felix Lee).
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v85 10/15/87 Search now keeps track of line numbers.
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v86 10/20/87 Added -B option and autobuf; fixed
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"pipe error" bug.
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v87 3/1/88 Fix bug re BSD signals while reading file.
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v88 3/12/88 Use new format for -P option (thanks to
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der Mouse), allow "+-c" without message,
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fix bug re BSD hangup.
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v89 3/18/88 Turn off line numbers if linenum scan
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is interrupted.
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v90 3/30/88 Allow -P from within less.
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v91 3/30/88 Added tags file support (new -t option)
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(thanks to Brian Campbell).
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v92 4/4/88 Added -+option syntax.
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v93 4/11/88 Add support for slow input (thanks to
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Joe Orost & apologies for taking almost
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3 years to get this in!)
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v94 4/11/88 Redo reading/signal stuff.
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v95 4/20/88 Repaint screen better after signal.
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v96 4/21/88 Add /! and ?! commands.
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v97 5/17/88 Allow -l/-L from within less.
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Eliminate some static arrays (use calloc).
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Posted to USENET.
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-----------------------------------------------------------------
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v98 10/14/88 Fix incorrect calloc call; uninitialized
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var in exec_mca; core dump on unknown TERM.
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Make v cmd work if past last line of file.
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Fix some signal bugs.
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v99 10/29/88 Allow space between -X and string,
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when X is a string-valued option.
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v100 1/5/89 Fix globbing bug when $SHELL not set;
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allow spaces after -t command.
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v101 1/6/89 Fix problem with long (truncated) lines
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in tags file (thanks to Neil Dixon).
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v102 1/6/89 Fix bug with E# when no prev file;
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allow spaces after -l command.
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v103 3/14/89 Add -N, -f and -? options. Add z and w
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commands. Add %L for prompt strings.
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v104 3/16/89 Added EDITPROTO.
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v105 3/20/89 Fix bug in find_linenum which cached
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incorrectly on long lines.
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v106 3/31/89 Added -k option and multiple lesskey
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files.
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v107 4/27/89 Add 8-bit char support and -g option.
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Split option code into 3 files.
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v108 5/5/89 Allocate position table dynamically
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(thanks to Paul Eggert); change % command
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from "percent" to vi-style brace finder.
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v109 5/10/89 Added ESC-% command, split prim.c.
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v110 5/24/89 Fixed bug in + option; fixed repaint bug
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under Sun windows (thanks to Paul Eggert).
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v111 5/25/89 Generalized # and % expansion; use
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calloc for some error messages.
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v112 5/30/89 Get rid of ESC-%, add {}()[] commands.
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v113 5/31/89 Optimize lseeks (thanks to Paul Eggert).
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v114 7/25/89 Added ESC-/ and ESC-/! commands.
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v115 7/26/89 Added ESC-n command.
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v116 7/31/89 Added find_pos to optimize g command.
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v117 8/1/89 Change -f option to -r.
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v118 8/2/89 Save positions for all previous files,
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not just the immediately previous one.
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v119 8/7/89 Save marks across file boundaries.
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Add file handle stuff.
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v120 8/11/89 Add :ta command.
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v121 8/16/89 Add -f option.
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v122 8/30/89 Fix performance with many buffers.
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v123 8/31/89 Verbose prompts for string options.
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Posted beta to USENET.
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-----------------------------------------------------------------
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v124 9/18/89 Reorganize search commands,
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N = rev, ESC-n = span, add ESC-N.
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v125 9/18/89 Fix tab bug (thanks to Alex Liu).
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Fix EOF bug when both -w and -c.
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v126 10/25/89 Add -j option.
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v127 10/27/89 Fix problems with blank lines before BOF.
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v128 10/27/89 Add %bj, etc. to prompt strings.
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v129 11/3/89 Add -+,-- commands; add set-option and
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unset-option to lesskey.
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v130 11/6/89 Generalize A_EXTRA to string, remove
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set-option, unset-option from lesskey.
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v131 11/7/89 Changed name of EDITPROTO to LESSEDIT.
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v132 11/8/89 Allow editing of command prefix.
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v133 11/16/89 Add -y option (thanks to Jeff Sullivan).
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v134 12/1/89 Glob filenames in the -l command.
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v135 12/5/89 Combined {}()[] commands into one, and
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added ESC-^F and ESC-^B commands.
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v136 1/20/90 Added -S, -R flags. Added | command.
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Added warning for binary files. (thanks
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to Richard Brittain and J. Sullivan).
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v137 1/21/90 Rewrote horrible pappend code.
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Added * notation for hi-bit chars.
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v138 1/24/90 Fix magic cookie terminal handling.
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Get rid of "cleanup" loop in ch_get.
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v139 1/27/90 Added MSDOS support. (many thanks
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to Richard Brittain).
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v140 2/7/90 Editing a new file adds it to the
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command line list.
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v141 2/8/90 Add edit_list for editing >1 file.
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v142 2/10/90 Add :x command.
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v143 2/11/90 Add * and @ modifies to search cmds.
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Change ESC-/ cmd from /@* to / *.
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v144 3/1/90 Messed around with ch_zero;
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no real change.
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v145 3/2/90 Added -R and -v/-V for MSDOS;
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renamed FILENAME to avoid conflict.
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v146 3/5/90 Pull cmdbuf functions out of command.c
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v147 3/7/90 Implement ?@; fix multi-file edit bugs.
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v148 3/29/90 Fixed bug in :e<file> then :e#.
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v149 4/3/90 Change error,ierror,query to use PARG.
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v150 4/6/90 Add LESS_CHARSET, LESS_CHARDEF.
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v151 4/13/90 Remove -g option; clean up ispipe.
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v152 4/14/90 lsystem() closes input file, for
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editors which require exclusive open.
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v153 4/18/90 Fix bug if SHELL unset;
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fix bug in overstrike control char.
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v154 4/25/90 Output to fd 2 via buffer.
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v155 4/30/90 Ignore -i if uppercase in pattern
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(thanks to Michael Rendell.)
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v156 5/3/90 Remove scroll limits in forw() & back();
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causes problems with -c.
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v157 5/4/90 Forward search starts at next real line
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(not screen line) after jump target.
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v158 6/14/90 Added F command.
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v159 7/29/90 Fix bug in exiting: output not flushed.
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v160 7/29/90 Clear screen before initial output w/ -c.
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v161 7/29/90 Add -T flag.
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v162 8/14/90 Fix bug with +F on command line.
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v163 8/21/90 Added LESSBINFMT variable.
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v164 9/5/90 Added -p, LINES, COLUMNS and
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unset mark ' == BOF, for 1003.2 D5.
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v165 9/6/90 At EOF with -c set, don't display empty
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screen when try to page forward.
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v166 9/6/90 Fix G when final line in file wraps.
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v167 9/11/90 Translate CR/LF -> LF for 1003.2.
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v168 9/13/90 Return to curr file if "tag not found".
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v169 12/12/90 G goes to EOF even if file has grown.
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v170 1/17/91 Add optimization for BSD _setjmp;
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fix #include ioctl.h TERMIO problem.
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(thanks to Paul Eggert)
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Posted to USENET.
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-----------------------------------------------------------------
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v171 3/6/91 Fix -? bug in get_filename.
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v172 3/15/91 Fix G bug in empty file.
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Fix bug with ?\n and -i and uppercase
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pattern at EOF!
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(thanks to Paul Eggert)
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v173 3/17/91 Change N cmd to not permanently change
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direction. (thanks to Brian Matthews)
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v174 3/18/91 Fix bug with namelogfile not getting
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cleared when change files.
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v175 3/18/91 Fix bug with ++cmd on command line.
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(thanks to Jim Meyering)
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v176 4/2/91 Change | to not force current screen,
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include marked line, start/end from
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top of screen. Improve search speed.
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(thanks to Don Mears)
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v177 4/2/91 Add LESSHELP variable.
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Fix bug with F command with -e.
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Try /dev/tty for input before using fd 2.
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Patches posted to USENET 4/2/91.
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-----------------------------------------------------------------
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v178 4/8/91 Fixed bug in globbing logfile name.
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(thanks to Jim Meyering)
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v179 4/9/91 Allow negative -z for screen-relative.
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v180 4/9/91 Clear to eos rather than eol if "db";
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don't use "sr" if "da".
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(thanks to Tor Lillqvist)
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v181 4/18/91 Fixed bug with "negative" chars 80 - FF.
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(thanks to Benny Sander Hofmann)
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v182 5/16/91 Fixed bug with attribute at EOL.
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(thanks to Brian Matthews)
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v183 6/1/91 Rewrite linstall to do smart config.
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v184 7/11/91 Process \b in searches based on -u
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rather than -i.
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v185 7/11/91 -Pxxx sets short prompt; assume SIGWINCH
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after a SIGSTOP. (thanks to Ken Laprade)
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-----------------------------------------------------------------
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v186 4/20/92 Port to MS-DOS (Microsoft C).
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v187 4/23/92 Added -D option & TAB_COMPLETE_FILENAME.
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v188 4/28/92 Added command line editing features.
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v189 12/8/92 Fix mem overrun in anscreen.c:init;
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fix edit_list to recover from bin file.
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v190 2/13/93 Make TAB enter one filename at a time;
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create ^L with old TAB functionality.
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v191 3/10/93 Defer creating "flash" page for MS-DOS.
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v192 9/6/93 Add BACK-TAB.
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v193 9/17/93 Simplify binary_file handling.
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v194 1/4/94 Add rudiments of alt_filename handling.
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v195 1/11/94 Port back to Unix; support keypad.
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-----------------------------------------------------------------
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v196 6/7/94 Fix bug with bad filename; fix IFILE
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type problem. (thanks to David MacKenzie)
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v197 6/7/94 Fix bug with .less tables inserted wrong.
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v198 6/23/94 Use autoconf installation technology.
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(thanks to David MacKenzie)
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v199 6/29/94 Fix MS-DOS build (thanks to Tim Wiegman).
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v200 7/25/94 Clean up copyright, minor fixes.
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Posted to prep.ai.mit.edu
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-----------------------------------------------------------------
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v201 7/27/94 Check for no memcpy; add casts to calloc;
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look for regcmp in libgen.a.
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(thanks to Kaveh Ghazi).
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v202 7/28/94 Fix bug in edit_next/edit_prev with
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non-existent files.
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v203 8/2/94 Fix a variety of configuration bugs on
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various systems. (thanks to Sakai
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Kiyotaka, Harald Koenig, Bjorn Brox,
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Teemu Rantanen, and Thorsten Lockert)
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v204 8/3/94 Use strerror if available.
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(thanks to J.T. Conklin)
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v205 8/5/94 Fix bug in finding "me" termcap entry.
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(thanks to Andreas Stolcke)
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8/10/94 v205+: Change BUFSIZ to LBUFSIZE to avoid name
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conflict with stdio.h.
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Posted to prep.ai.mit.edu
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-----------------------------------------------------------------
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v206 8/10/94 Use initial_scrpos for -t to avoid
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displaying first page before init().
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(thanks to Dominique Petitpierre)
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v207 8/12/94 Fix bug if stdout is not tty.
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v208 8/16/94 Fix bug in close_altfile if goto err1
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in edit_ifile. (Thanks to M.J. Hewitt)
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v209 8/16/94 Change scroll to wscroll to avoid
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conflict with library function.
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v210 8/16/94 Fix bug with bold on 8 bit chars.
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(thanks to Vitor Duarte)
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v211 8/16/94 Don't quit on EOI in jump_loc / forw.
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v212 8/18/94 Use time_t if available.
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v213 8/20/94 Allow ospeed to be defined in termcap.h.
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v214 8/20/94 Added HILITE_SEARCH, -F, ESC-u cmd.
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(thanks to Paul Lew and Bob Byrnes)
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v215 8/23/94 Fix -i toggle behavior.
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v216 8/23/94 Process BS in all searches, not only -u.
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v217 8/24/94 Added -X flag.
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v218 8/24/94 Reimplement undo_search.
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v219 8/24/94 Find tags marked with line number
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instead of pattern.
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v220 8/24/94 Stay at same position after SIG_WINCH.
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v221 8/24/94 Fix bug in file percentage in big file.
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v222 8/25/94 Do better if can't reopen current file.
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v223 8/27/94 Support setlocale.
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(thanks to Robert Joop)
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v224 8/29/94 Revert v216: process BS in search
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only if -u.
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v225 9/6/94 Rewrite undo_search again: toggle.
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v226 9/15/94 Configuration fixes.
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(thanks to David MacKenzie)
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v227 9/19/94 Fixed strerror config problem.
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Posted to prep.ai.mit.edu
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-----------------------------------------------------------------
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v228 9/21/94 Fix bug in signals: repeated calls to
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get_editkeys overflowed st_edittable.
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v229 9/21/94 Fix "Nothing to search" error if -a
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and SRCH_PAST_EOF.
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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 $HOME first.
|
|
v286 3/7/95 Reformat change history (too much free time?).
|
|
v287 3/8/95 Fix hilite bug if overstrike multiple chars.
|
|
v288 3/8/95 Allow lesskey to override get_editkey keys.
|
|
v289 3/9/95 Fix adj_hilite bug when line gets processed by
|
|
hilite_line more than once.
|
|
v290 3/9/95 Make configure automatically. Fix Sequent problem
|
|
with incompatible sigsetmask().
|
|
Posted to prep.ai.mit.edu
|
|
-----------------------------------------------------------------
|
|
v291 3/21/95 Add #env to lesskey. Fix MS-DOS build.
|
|
Posted to simtel.
|
|
-----------------------------------------------------------------
|
|
v292 4/24/95 Add MS-DOS support for Borland C.
|
|
Fix arrow keys in MS-DOS versions.
|
|
v293 4/28/95 Add auto-versioning stuff to make dist.
|
|
v294 5/12/95 Fix Borland build.
|
|
v295 1/20/96 Fix search on squished file; add /@@.
|
|
v296 1/23/96 Allow cmdbuf larger than screen width.
|
|
v297 1/24/96 Don't call termcap if tgetent fails;
|
|
add #defines for buffers.
|
|
v298 1/24/96 Change @@ to ^K.
|
|
Add alternate search modifiers ^N, ^F, ^E.
|
|
v299 1/25/96 Fix percent overflow in jump_percent (thanks to Brent Wiese);
|
|
don't send "ti" after shell command till RETURN pressed.
|
|
v300 1/25/96 Change -U to print tabs as ^I.
|
|
v301 1/30/96 Make hilites work in cmd F output.
|
|
v302 1/31/96 Fix cmd F to notice window-change signals.
|
|
v303 1/31/96 Add ESC-SPACE command.
|
|
v304 2/1/96 Add ^R search modifier; add LESSSECURE.
|
|
v305 2/2/96 Workaround Linux /proc kernel bug; add LESSKEY.
|
|
v306 3/16/96 Minor fixes.
|
|
v307 3/25/96 Allow cmd line arg "--"; fix DOS & OS/2 defines.h.
|
|
v308 4/4/96 Port to OS-9 (thanks to Boisy Pitre); fix -d.
|
|
v309 4/9/96 Fix OS-9 version; fix tags bug with "$".
|
|
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.
|
|
-----------------------------------------------------------------
|
|
v382 2/3/04 Remove copyrighted code.
|
|
-----------------------------------------------------------------
|
|
v383 2/16/04 Add history file; add -K option; improve UTF-8 handling;
|
|
fix some signed char bugs (thanks to Christian Biere);
|
|
fix some upper/lower case bugs (thanks to Bjoern Jacke);
|
|
add erase2 char (thanks to David Lawrence);
|
|
add windows charset (thanks to Dimitar Zhekov).
|
|
v384 2/20/04 Improvements in UTF-8 handling.
|
|
v385 2/23/04 Fix UTF-8 output bug.
|
|
-----------------------------------------------------------------
|
|
v386 9/13/05 Improvements to UTF-8 shift & color (thanks to Charles Levert);
|
|
protect against invalid LESSOPEN and LESSCLOSE values.
|
|
v387 9/14/05 Update Charles Levert's UTF-8 patch.
|
|
v388 9/14/05 Change history behavior; change most sprintf calls to snprintf.
|
|
v389 9/14/05 Fix copy & paste with long lines; improve performance of
|
|
expand_linebuf; fix crash in init_mlist;
|
|
v390 9/15/05 Show search matches in status column even if -G is set.
|
|
-----------------------------------------------------------------
|
|
v391 9/17/05 Fix bugs.
|
|
v392 10/14/05 Fix line wrapping bug.
|
|
v393 10/19/05 Allow multiple attributes per char; fix bold+underline bug
|
|
(thanks again to Charles Levert).
|
|
v394 11/8/05 Fix prompt bug; fix compile problem in Windows build.
|
|
-----------------------------------------------------------------
|
|
v395 1/12/07 Update Unicode tables (thanks to Charles Levert);
|
|
don't chmod if LESSHISTFILE = /dev/null;
|
|
make -f work for directories; support DESTDIR in Makefile;
|
|
fix sigset_t detection in configure;
|
|
make "t" cmd traverse tags in correct order
|
|
v396 1/13/07 Add compatibility with POSIX more.
|
|
v397 3/21/07 Allow decimal point in number for % command;
|
|
Allow decimal point in number for -j option;
|
|
Allow n command to fetch last search pattern from history
|
|
(thanks to arno).
|
|
v398 3/22/07 Don't rewrite history file if not necessary;
|
|
fix bug when filenames contain "$".
|
|
v399 3/22/07 Don't move to bottom of screen at startup;
|
|
don't output extraneous newlines.
|
|
v400 3/23/07 Allow search to find pattern after null byte (PCRE and no-regex)
|
|
(thanks to Michael Constant).
|
|
-----------------------------------------------------------------
|
|
v401 3/24/07 Minor documentation fixes.
|
|
v402 3/30/07 Fix autoconf bug when memcpy etc are inline;
|
|
fix bug in terminating number following -j option.
|
|
v403 5/25/07 Fix Windows build.
|
|
v404 6/5/07 Fix display bug with F command and long lines.
|
|
v405 6/17/07 Fix display bug when using -w option.
|
|
v406 6/17/07 Fix secure build.
|
|
v407 8/16/07 Fix bugs; support CSI chars.
|
|
v408 10/1/07 Fix bug in -i with non-ASCII chars.
|
|
v409 10/12/07 Fix crash when viewing text with invalid UTF-8 sequences.
|
|
v411 11/6/07 Fix case-insensitive searching with non-ASCII text.
|
|
v412 11/6/07 Use symbolic SEEK constants.
|
|
v413 11/6/07 Fix search highlight bug with non-ASCII text.
|
|
v414 11/6/07 Fix display bug with no-wrap terminals.
|
|
v415 11/14/07 Add --follow-name option.
|
|
v416 11/22/07 Fix crash when searching text with invalid UTF-8 sequences.
|
|
v417 12/31/07 Don't support single-char CSI in UTF-8 mode;
|
|
fix bug with -R and invalid CSI sequences;
|
|
fix bug searching text with SGR sequences with -r;
|
|
emulate SGR sequences in WIN32 build.
|
|
v418 12/31/07 Clean up.
|
|
-----------------------------------------------------------------
|
|
v419 1/16/08 Make CSI char 0x9B work in UTF-8 mode (thanks to Colin Watson).
|
|
v420 2/24/08 Add & command; fix -F option; fix '' after G.
|
|
v421 2/24/08 Ignore filtered lines when searching.
|
|
v422 3/2/08 Output CR at startup.
|
|
v423 5/27/08 Clean up.
|
|
v424 6/16/08 Fix compile bug with pcre; don't filter help file.
|
|
v425 7/14/08 Fix non-ANSI code in list handling in ch.c.
|
|
v426 10/27/08 Fix ignaw terminal handling (thanks to Per Hedeland);
|
|
fix binary file detection in UTF-8 mode.
|
|
v427 3/16/09 A few Win32 fixes (thanks to Jason Hood).
|
|
v428 3/30/09 Add "|-" syntax to LESSOPEN.
|
|
v429 4/10/09 Fix search highlighting bug with underlined text.
|
|
-----------------------------------------------------------------
|
|
v430 4/22/09 Don't pass "-" to non-pipe LESSOPEN unless it starts with "-".
|
|
v431 4/29/09 Fix highlight bug when match is at end of line.
|
|
v432 6/27/09 Better fix for highlight bugs;
|
|
fix new problems with ignaw terminals.
|
|
v433 6/28/09 Cleanup search code.
|
|
v434 6/29/09 More cleanup.
|
|
v435 7/04/09 Fix bugs with non-regex filtering.
|
|
v436 7/05/09 Fix memory leak.
|
|
-----------------------------------------------------------------
|
|
v437 7/14/09 Fix bug in handling some long option names;
|
|
make percentage calculation more accurate.
|
|
v438 12/29/10 Fix bugs with -i/-I and & filtering;
|
|
exit with status 2 on ctrl-C with -K.
|
|
v439 12/31/10 Add -A option.
|
|
v440 1/5/11 Fix bug displaying prompt after = command.
|
|
v441 1/21/11 Fix semi-infinite loop if no newlines in file;
|
|
make new -A behavior the default.
|
|
-----------------------------------------------------------------
|
|
v442 3/2/11 Fix search bug.
|
|
Add ctrl-G line edit command.
|
|
v443 4/9/11 Fix Windows build.
|
|
v444 6/8/11 Fix ungetc bug; remove vestiges of obsolete -l option.
|
|
-----------------------------------------------------------------
|
|
v445 10/19/11 Fix hilite bug in backwards scroll with -J.
|
|
Fix hilite bug with backspaces.
|
|
Fix bugs handling SGR sequences in Win32 (thanks to Eric Lee).
|
|
Add support for GNU regex (thanks to Reuben Thomas).
|
|
v446 5/15/12 Up/down arrows in cmd editing search for matching cmd.
|
|
v447 5/21/12 Add ESC-F command, two-pipe LESSOPEN syntax.
|
|
v448 6/15/12 Print name of regex library in version message.
|
|
v449 6/23/12 Allow config option --with-regex=none.
|
|
v450 7/4/12 Fix EOF bug with ESC-F.
|
|
v451 7/20/12 Fix typo.
|
|
-----------------------------------------------------------------
|
|
v452 10/19/12 Fix --with-regex=none, fix "stty 0", fix Win32.
|
|
Don't quit if errors in cmd line options.
|
|
v453 10/27/12 Increase buffer sizes.
|
|
v454 11/5/12 Fix typo.
|
|
v455 11/5/12 Fix typo.
|
|
v456 11/8/12 Fix option string incompatibility.
|
|
v457 12/8/12 Use new option string syntax only after --use-backslash.
|
|
v458 4/4/13 Fix display bug in using up/down in cmd buffer.
|
|
-----------------------------------------------------------------
|
|
v459 5/6/13 Fix ++ bug.
|
|
v460 6/19/13 Automate construction of Unicode tables.
|
|
v461 6/21/13 Collapse multiple CRs before LF.
|
|
v462 11/26/13 Don't overwrite history file, just append to it.
|
|
v463 7/13/14 Misc. fixes.
|
|
v464 7/19/14 Fix bugs & improve performance in & filtering
|
|
(thanks to John Sullivan).
|
|
v465 8/9/14 More fixes from John Sullivan.
|
|
v466 8/23/14 Add colon to LESSANSIMIDCHARS.
|
|
v467 9/18/14 Misc. fixes.
|
|
v468 9/18/14 Fix typo
|
|
v469 10/2/14 Allow extra string in command to append to a multichar
|
|
cmd without executing it; fix bug using GNU regex.
|
|
v470 10/5/14 Fix some compiler warnings.
|
|
v471 12/14/14 Fix unget issues with prompt. Allow disabling history
|
|
when compiled value of LESSHISTFILE = "-".
|
|
v473 12/19/14 Fix prompt bug with stdin and -^P in lesskey extra string.
|
|
v474 1/30/15 Fix bug in backwards search with match on bottom line.
|
|
Make follow mode reopen file if file shrinks.
|
|
v475 3/2/15 Fix possible buffer overrun with invalid UTF-8;
|
|
fix bug when compiled with no regex; fix non-match search.
|
|
v476 5/3/15 Update man pages.
|
|
v477 5/19/15 Fix off-by-one in jump_forw_buffered;
|
|
don't add FAKE_* files to cmd history.
|
|
v478 5/21/15 Fix nonportable pointer usage in hilite tree.
|
|
v479 7/6/15 Allow %% escapes in LESSOPEN variable.
|
|
v480 7/24/15 Fix bug in no-regex searches; support MSVC v1900.
|
|
v481 8/20/15 Fix broken -g option.
|
|
-----------------------------------------------------------------
|
|
v482 2/25/16 Update Unicode database to "2015-06-16, 20:24:00 GMT [KW]".
|
|
v483 2/27/16 Regenerate hilite when change search caselessness.
|
|
(Thanks to Jason Hood)
|
|
Fix bug when terminal has no "cm". (Thanks to Noel Cragg)
|
|
v484 9/20/16 Update to Unicode 9.0.0 database.
|
|
v485 10/21/16 Fix "nothing to search" bug when top/bottom line is empty;
|
|
Display line numbers in bold. (thanks to Jason Hood);
|
|
Fix incorrect display when entering double-width chars in
|
|
search string.
|
|
v486 10/22/16 New commands ESC-{ and ESC-} to shift to start/end of
|
|
displayed lines; new option -Da in Windows version to
|
|
enable SGR mode (thanks to Jason Hood).
|
|
v487 10/23/16 configure --help formatting.
|
|
-----------------------------------------------------------------
|
|
v488 2/23/17 Fix memory leaks in search (thanks to John Brooks).
|
|
v489 3/30/17 Make -F not do init/deinit if file fits on one screen
|
|
(thanks to Jindrich Novy).
|
|
v490 4/5/17 Switch to ANSI prototypes in funcs.h; remove "register".
|
|
v491 4/7/17 Fix signed char bug.
|
|
v492 4/21/17 Handle SIGTERM.
|
|
v493 6/22/17 Fix bug initializing charset in MSDOS build.
|
|
v494 6/26/17 Update Unicode tables; make Cf chars composing not binary.
|
|
v495 7/3/17 Improve binary file detection (thanks to Bela Lubkin);
|
|
do -R filter when matching tags (thanks to Matthew Malcomson).
|
|
v496 7/5/17 Add LESSRSCROLL marker.
|
|
v497 7/5/17 Sync.
|
|
v498 7/7/17 Fix early truncation of text if last char is double-width.
|
|
v499 7/10/17 Misc fixes.
|
|
v500 7/11/17 Fix bug where certain env variables couldn't be set in lesskey.
|
|
v501 7/12/17 Make sure rscroll char is standout by default.
|
|
v502 7/13/17 Control rscroll char via command line option not env variable.
|
|
v503 7/13/17 Switch to git.
|
|
v504 7/13/17 Call opt_rscroll at startup; change mkhelp.c to mkhelp.pl.
|
|
v505 7/17/17 Add M and ESC-M commands;
|
|
fix buffer handling with stdin and LESSOPEN.
|
|
v506 7/17/17 On Windows, convert UTF-8 to multibyte if console is not UTF-8;
|
|
handle extended chars on input (thanks to Jason Hood).
|
|
v507 7/18/17 Fix some bugs handling filenames containing shell metachars.
|
|
v508 7/19/17 Fix bugs when using LESSOPEN to read stdin.
|
|
v509 7/19/17 Fix another stdin bug.
|
|
v510 7/20/17 Fix bug in determining when to reopen a file.
|
|
v511 7/25/17 Fix bugs in recent MSDOS changes (thanks to Jason Hood).
|
|
v512 7/26/17 Fix MSDOS build.
|
|
v513 7/26/17 Fix switch to normal attr at end of line with -R and rscroll.
|
|
v514 7/27/17 Fix bug in fcomplete when pattern does not match a file.
|
|
v515 7/28/17 Allow 'u' in -D option on Windows.
|
|
v516 7/29/17 Fix bug using LESSOPEN with filename containing metachars.
|
|
v517 7/30/17 Status column shows matches even if hiliting is disabled via -G.
|
|
v518 8/1/17 Use underline in sgr mode in MSDOS (thanks to Jason Hood).
|
|
v519 8/10/17 Fix rscroll bug when last char of line starts coloration.
|
|
v520 9/3/17 Fix compiler warning.
|
|
v521 10/20/17 Fix binary file warning in UTF-8 files with SGI sequences.
|
|
v522 10/20/17 Handle keypad ENTER key properly.
|
|
v523 10/23/17 Cleanup.
|
|
v524 10/24/17 Fix getcc bug.
|
|
v525 10/24/17 Change M command to mark last displayed line.
|
|
v526 10/25/17 Fix search hilite bug introduced in v517.
|
|
v527 10/30/17 Fix search hilite bug on last page with -a.
|
|
v528 11/3/17 Make second ESC-u clear status column.
|
|
v529 11/12/17 Display Unicode formatting chars in hex if -U is set.
|
|
*/
|
|
|
|
char version[] = "529";
|