/* * 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 not 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 "+" argument 9/25/84 markn * v10: Fixed bug in -b 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 * 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 * 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). * v48.amiga 1.0: Port by Bob Leivian * 2702 W Curry Chander AZ 85224 602-820-6859 mot!dover!leivian * amiga 1.1 4/30/87 Bob L. * added templates, workbench access, fixed BS in searches, * and last space exits now * amiga 1.2 8/9/87 Bob L. * disabled the LESS environment variable so it will * not require the workbench at each startup * ----------------------------------------------------------------- */ char version[] = "Less 1.2 by Bob Leivian: for more, b-ackup, h-elp, q-uit";