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/* * less * Copyright (c) 1984,1985 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. * * ----------------------------------------------------------------- * * 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). */ char version[] = "@(#) less version 97";
These are the contents of the former NiCE NeXT User Group NeXTSTEP/OpenStep software archive, currently hosted by Netfuture.ch.