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gno/bin/less/version.c
gdr-ftp 784e3de7cd Initial checkin of aroff, binprint, center, less, ls, make, makemake, 
passwd, ps, purge, shutdown, stty, upper, and vi.  These sources are
for the versions of the utils shipped with GNO v2.0.4.
1998-03-09 08:30:21 +00:00

321 lines
16 KiB
C
Raw Blame History

#pragma noroot
#include "less.h"
#ifdef _ORCAC_
segment " ";
#endif
/*
* less
* Copyright (c) 1984,1985,1989 Mark Nudelman
*
* This program may be freely used and/or modified,
* with the following provisions:
* 1. This notice and the above copyright notice must remain intact.
* 2. Neither this program, nor any modification of it,
* may be sold for profit without written consent of the author.
*
* ---------------------------------------------------------------
* | Special note to the person who ported "less" to the Amiga: |
* | If you're going to be vain enough to splash your name on |
* | the screen every time someone runs less, you might at |
* | least credit the author. |
* ---------------------------------------------------------------
*
* This program is a paginator similar to "more",
* but allows you to move both forward and backward in the file.
* Commands are based on "more" and "vi".
*
* ----------------------- CHANGES ---------------------------------
*
* Allowed use on standard input 1/29/84 markn
* Added E, N, P commands 2/1/84 markn
* Added '=' command, 'stop' signal handling 4/17/84 markn
* Added line folding 4/20/84 markn
* v2: Fixed '=' command to use BOTTOM_PLUS_ONE,
* instead of TOP, added 'p' & 'v' commands 4/27/84 markn
* v3: Added -m and -t options, '-' command 5/3/84 markn
* v4: Added LESS environment variable 5/3/84 markn
* v5: New comments, fixed '-' command slightly 5/3/84 markn
* v6: Added -Q, visual bell 5/15/84 markn
* v7: Fixed jump_back(n) bug: n should count real
* lines, not folded lines. Also allow number
* on G command. 5/24/84 markn
* v8: Re-do -q and -Q commands 5/30/84 markn
* v9: Added "+<cmd>" argument 9/25/84 markn
* v10: Fixed bug in -b<n> argument processing 10/10/84 markn
* v11: Made error() ring bell if \n not entered. 10/18/84 markn
* -----------------------------------------------------------------
* v12: Reorganized signal handling and made
* portable to 4.2bsd. 2/13/85 mark
* v13: Reword error message for '-' command. 2/16/85 mark
* v14: Added -bf and -bp variants of -b. 2/22/85 mark
* v15: Miscellaneous changes. 2/25/85 mark
* v16: Added -u flag for backspace processing. 3/13/85 mark
* v17: Added j and k commands,
* changed -t default. 4/13/85 mark
* v18: Rewrote signal handling code. 4/20/85 mark
* v19: Got rid of "verbose" eq_message(). 5/2/85 mark
* Made search() scroll in some cases.
* v20: Fixed screen.c ioctls for System V. 5/21/85 mark
* v21: Fixed some first_cmd bugs. 5/23/85 mark
* v22: Added support for no RECOMP nor REGCMP. 5/24/85 mark
* v23: Miscellanous changes and prettying up. 5/25/85 mark
* Posted to USENET.
* -----------------------------------------------------------------
* v24: Added ti,te terminal init & de-init 6/3/85 Mike Kersenbrock
* v25: Added -U flag, standout mode underlining. 6/8/85 mark
* v26: Added -M flag. 6/9/85 mark
* Use underline termcap (us) if it exists.
* v27: Renamed some variables to make unique in 6/15/85 mark
* 6 chars. Minor fix to -m.
* v28: Fixed right margin bug. 6/28/85 mark
* v29: Incorporated M.Rose's changes to signal.c 6/28/85 mark
* v30: Fixed stupid bug in argument processing. 6/29/85 mark
* v31: Added -p flag, changed repaint algorithm. 7/15/85 mark
* Added kludge for magic cookie terminals.
* v32: Added cat_file if output not a tty. 7/16/85 mark
* v33: Added -e flag and EDITOR. 7/23/85 mark
* v34: Added -s flag. 7/26/85 mark
* v35: Rewrote option handling; added option.c. 7/27/85 mark
* v36: Fixed -e flag to work if not last file. 7/29/85 mark
* v37: Added -x flag. 8/10/85 mark
* v38: Changed prompting; created prompt.c. 8/19/85 mark
* v39: (Not -p) does not initially clear screen. 8/24/85 mark
* v40: Added "skipping" indicator in forw(). 8/26/85 mark
* Posted to USENET.
* -----------------------------------------------------------------
* v41: ONLY_RETURN, control char commands, 9/17/85 mark
* faster search, other minor fixes.
* v42: Added ++ command line syntax; 9/25/85 mark
* ch_fsize for pipes.
* v43: Added -h flag, changed prim.c algorithms. 10/15/85 mark
* v44: Made END print in all cases of eof; 10/16/85 mark
* ignore SIGTTOU after receiving SIGTSTP.
* v45: Never print backspaces unless -u. 10/16/85 mark
* v46: Backwards scroll in jump_loc. 10/24/85 mark
* v47: Fixed bug in edit(): *first_cmd==0 10/30/85 mark
* v48: Use TIOCSETN instead of TIOCSETP. 11/16/85 mark
* Added marks (m and ' commands).
* Posted to USENET.
* -----------------------------------------------------------------
* v49: Fixed bug: signal didn't clear mcc. 1/9/86 mark
* v50: Added ' (quote) to gomark. 1/15/86 mark
* v51: Added + cmd, fixed problem if first_cmd
* fails, made g cmd sort of "work" on pipes
* even if bof is no longer buffered. 1/16/86 mark
* v52: Made short files work better. 1/17/86 mark
* v53: Added -P option. 1/20/86 mark
* v54: Changed help to use HELPFILE. 1/20/86 mark
* v55: Messages work better if not tty output. 1/23/86 mark
* v56: Added -l option. 1/24/86 mark
* v57: Fixed -l to get confirmation before
* overwriting an existing file. 1/31/86 mark
* v58: Added filename globbing. 8/28/86 mark
* v59: Fixed some bugs with very long filenames. 9/15/86 mark
* v60: Incorporated changes from Leith (Casey)
* Leedom for boldface and -z option. 9/26/86 mark
* v61: Got rid of annoying repaints after ! cmd. 9/26/86 mark
* Posted to USENET.
* -----------------------------------------------------------------
* v62: Added is_directory(); change -z default to
* -1 instead of 24; cat-and-exit if -e and
* file is less than a screenful. 12/23/86 mark
* v63: Fixed bug in cat-and-exit if > 1 file. 1/8/87 mark
* v64: Changed puts/putstr, putc/putchr,
* getc/getchr to avoid name conflict with
* stdio functions. 1/12/87 mark
* v65: Allowed '-' command to change NUMBER
* valued options (thanks to Gary Puckering) 1/26/87 mark
* v66: Fixed bug: prepaint should use force=1. 2/13/87 mark
* v67: Added !! and % expansion to ! command. 2/24/87 mark
* v68: Added SIGWINCH and TIOCGWINSZ support;
* changed is_directory to bad_file.
* (thanks to J. Robert Ward) 2/25/87 mark
* v69: Added SIGWIND and WIOCGETD (for Unix PC). 2/25/87 mark
* v70: Changed help cmd from 'h' to 'H'; better
* error msgs in bad_file, errno_message. 3/13/87 mark
* v71: Changed -p to -c, made triple -c/-C
* for clear-eol like more's -c. 5/11/87 mark
* v72: Added -E, -L, use $SHELL in lsystem(). 6/26/87 mark
* (thanks to Steve Spearman)
* v73: Allow Examine "#" for previous file. 6/26/87 mark
* Posted to USENET 8/25/87.
* -----------------------------------------------------------------
* v74: Fix conflict in EOF symbol with stdio.h, 9/18/87 mark
* Make os.c more portable to BSD.
* v75: Fix problems in get_term (thanks to 9/23/87 mark
* Paul Eggert); new backwards scrolling in
* jump_loc (thanks to Marion Hakanson).
* v76: Added -i flag; allow single "!" to 9/23/87 mark
* invoke a shell (thanks to Franco Barber).
* v77: Added -n flag and line number support. 9/24/87 mark
* v78: Fixed problem with prompts longer than 9/25/87 mark
* the screen width.
* v79: Added the _ command. 9/29/87 mark
* v80: Allow signal to break out of linenum scan. 10/6/87 mark
* v81: Allow -b to be changed from within less. 10/6/87 mark
* v82: Add cmd_decode to use a table for key 10/7/87 mark
* binding (thanks to David Nason).
* v83: Allow .less file for user-defined keys. 10/9/87 mark
* v84: Fix -e/-E problems (thanks to Felix Lee). 10/11/87 mark
* v85: Search now keeps track of line numbers. 10/15/87 mark
* v86: Added -B option and autobuf; fixed 10/20/87 mark
* "pipe error" bug.
* v87: Fix bug re BSD signals while reading file. 3/1/88 mark
* v88: Use new format for -P option (thanks to 3/12/88 mark
* der Mouse), allow "+-c" without message,
* fix bug re BSD hangup.
* v89: Turn off line numbers if linenum scan 3/18/88 mark
* is interrupted.
* v90: Allow -P from within less. 3/30/88 mark
* v91: Added tags file support (new -t option) 3/30/88 mark
* (thanks to Brian Campbell).
* v92: Added -+option syntax. 4/4/88 mark
* v93: Add support for slow input (thanks to 4/11/88 mark
* Joe Orost & apologies for taking almost
* 3 years to get this in!)
* v94: Redo reading/signal stuff. 4/11/88 mark
* v95: Repaint screen better after signal. 4/20/88 mark
* v96: Add /! and ?! commands. 4/21/88 mark
* v97: Allow -l/-L from within less. 5/17/88 mark
* Eliminate some static arrays (use calloc).
* Posted to USENET.
* -----------------------------------------------------------------
* v98: Fix incorrect calloc call; uninitialized 10/14/88 mark
* var in exec_mca; core dump on unknown TERM.
* Make v cmd work if past last line of file.
* Fix some signal bugs.
* v99: Allow space between -X and string, 10/29/88 mark
* when X is a string-valued option.
* v100: Fix globbing bug when $SHELL not set; 1/5/89 mark
* allow spaces after -t command.
* v101: Fix problem with long (truncated) lines 1/6/89 mark
* in tags file (thanks to Neil Dixon).
* v102: Fix bug with E# when no prev file; 1/6/89 mark
* allow spaces after -l command.
* v103: Add -N, -f and -? options. Add z and w 3/14/89 mark
* commands. Add %L for prompt strings.
* v104: Added EDITPROTO. 3/16/89 mark
* v105: Fix bug in find_linenum which cached 3/20/89 mark
* incorrectly on long lines.
* v106: Added -k option and multiple lesskey 3/31/89 mark
* files.
* v107: Add 8-bit char support and -g option. 4/27/89 mark
* Split option code into 3 files.
* v108: Allocate position table dynamically 5/5/89 mark
* (thanks to Paul Eggert); change % command
* from "percent" to vi-style brace finder.
* v109: Added ESC-% command, split prim.c. 5/10/89 mark
* v110: Fixed bug in + option; fixed repaint bug 5/24/89 mark
* under Sun windows (thanks to Paul Eggert).
* v111: Generalized # and % expansion; use 5/25/89 mark
* calloc for some error messages.
* v112: Get rid of ESC-%, add {}()[] commands. 5/30/89 mark
* v113: Optimize lseeks (thanks to Paul Eggert). 5/31/89 mark
* v114: Added ESC-/ and ESC-/! commands. 7/25/89 mark
* v115: Added ESC-n command. 7/26/89 mark
* v116: Added find_pos to optimize g command. 7/31/89 mark
* v117: Change -f option to -r. 8/1/89 mark
* v118: Save positions for all previous files, 8/2/89 mark
* not just the immediately previous one.
* v119: Save marks across file boundaries. 8/7/89 mark
* Add file handle stuff.
* v120: Add :ta command. 8/11/89 mark
* v121: Add -f option. 8/16/89 mark
* v122: Fix performance with many buffers. 8/30/89 mark
* v123: Verbose prompts for string options. 8/31/89 mark
* Posted beta to USENET.
* -----------------------------------------------------------------
* v124: Reorganize search commands, 9/18/89 mark
* N = rev, ESC-n = span, add ESC-N.
* v125: Fix tab bug (thanks to Alex Liu). 9/18/89 mark
* Fix EOF bug when both -w and -c.
* v126: Add -j option. 10/25/89 mark
* v127: Fix problems with blank lines before BOF. 10/27/89 mark
* v128: Add %bj, etc. to prompt strings. 10/27/89 mark
* v129: Add -+,-- commands; add set-option and 11/3/89 mark
* unset-option to lesskey.
* v130: Generalize A_EXTRA to string, remove 11/6/89 mark
* set-option, unset-option from lesskey.
* v131: Changed name of EDITPROTO to LESSEDIT. 11/7/89 mark
* v132: Allow editing of command prefix. 11/8/89 mark
* v133: Add -y option (thanks to Jeff Sullivan). 11/16/89 mark
* v134: Glob filenames in the -l command. 12/1/89 mark
* v135: Combined {}()[] commands into one, and 12/5/89 mark
* added ESC-^F and ESC-^B commands.
* v136: Added -S, -R flags. Added | command. 1/20/90 mark
* Added warning for binary files. (thanks
* to Richard Brittain and J. Sullivan).
* v137: Rewrote horrible pappend code. 1/21/90 mark
* Added * notation for hi-bit chars.
* v138: Fix magic cookie terminal handling. 1/24/90 mark
* Get rid of "cleanup" loop in ch_get.
* v139: Added MSDOS support. (many thanks 1/27/90 mark
* to Richard Brittain).
* v140: Editing a new file adds it to the 2/7/90 mark
* command line list.
* v141: Add edit_list for editing >1 file. 2/8/90 mark
* v142: Add :x command. 2/10/90 mark
* v143: Add * and @ modifies to search cmds. 2/11/90 mark
* Change ESC-/ cmd from /@* to / *.
* v144: Messed around with ch_zero; 3/1/90 mark
* no real change.
* v145: Added -R and -v/-V for MSDOS; 3/2/90 mark
* renamed FILENAME to avoid conflict.
* v146: Pull cmdbuf functions out of command.c 3/5/90 mark
* v147: Implement ?@; fix multi-file edit bugs. 3/7/90 mark
* v148: Fixed bug in :e<file> then :e#. 3/29/90 mark
* v149: Change error,ierror,query to use PARG. 4/3/90 mark
* v150: Add LESS_CHARSET, LESS_CHARDEF. 4/6/90 mark
* v151: Remove -g option; clean up ispipe. 4/13/90 mark
* v152: lsystem() closes input file, for 4/14/90 mark
* editors which require exclusive open.
* v153: Fix bug if SHELL unset; 4/18/90 mark
* fix bug in overstrike control char.
* v154: Output to fd 2 via buffer. 4/25/90 mark
* v155: Ignore -i if uppercase in pattern 4/30/90 mark
* (thanks to Michael Rendell.)
* v156: Remove scroll limits in forw() & back(); 5/3/90 mark
* causes problems with -c.
* v157: Forward search starts at next real line 5/4/90 mark
* (not screen line) after jump target.
* v158: Added F command. 6/14/90 mark
* v159: Fix bug in exiting: output not flushed. 7/29/90 mark
* v160: Clear screen before initial output w/ -c. 7/29/90 mark
* v161: Add -T flag. 7/29/90 mark
* v162: Fix bug with +F on command line. 8/14/90 mark
* v163: Added LESSBINFMT variable. 8/21/90 mark
* v164: Added -p, LINES, COLUMNS and 9/5/90 mark
* unset mark ' == BOF, for 1003.2 D5.
* v165: At EOF with -c set, don't display empty 9/6/90 mark
* screen when try to page forward.
* v166: Fix G when final line in file wraps. 9/6/90 mark
* v167: Translate CR/LF -> LF for 1003.2. 9/11/90 mark
* v168: Return to curr file if "tag not found". 9/13/90 mark
* v169: G goes to EOF even if file has grown. 12/12/90 mark
* v170: Add optimization for BSD _setjmp; 1/17/91 mark
* fix #include ioctl.h TERMIO problem.
* (thanks to Paul Eggert)
* Posted to USENET.
* -----------------------------------------------------------------
* v171: Fix -? bug in get_filename. 3/6/91 mark
* v172: Fix G bug in empty file. 3/15/91 mark
* Fix bug with ?\n and -i and uppercase
* pattern at EOF!
* (thanks to Paul Eggert)
* v173: Change N cmd to not permanently change 3/17/91 mark
* direction. (thanks to Brian Matthews)
* v174: Fix bug with namelogfile not getting 3/18/91 mark
* cleared when change files.
* v175: Fix bug with ++cmd on command line. 3/18/91 mark
* (thanks to Jim Meyering)
* v176: Change | to not force current screen, 4/2/91 mark
* include marked line, start/end from
* top of screen. Improve search speed.
* (thanks to Don Mears)
* v177: Add LESSHELP variable. 4/2/91 mark
* Fix bug with F command with -e.
* Try /dev/tty for input before using fd 2.
*/
char version[] = "@(#) less version 177";
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