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1.1 ! root 1: /* ! 2: * less ! 3: * Copyright (c) 1984,1985 Mark Nudelman ! 4: * ! 5: * This program may be freely used and/or modified, ! 6: * with the following provisions: ! 7: * 1. This notice and the above copyright notice must remain intact. ! 8: * 2. Neither this program, nor any modification of it, ! 9: * may not be sold for profit without written consent of the author. ! 10: * ! 11: * ----------------------------------------------------------------- ! 12: * ! 13: * This program is a paginator similar to "more", ! 14: * but allows you to move both forward and backward in the file. ! 15: * Commands are based on "more" and "vi". ! 16: * ! 17: * ----------------------- CHANGES --------------------------------- ! 18: * ! 19: * Allowed use on standard input 1/29/84 markn ! 20: * Added E, N, P commands 2/1/84 markn ! 21: * Added '=' command, 'stop' signal handling 4/17/84 markn ! 22: * Added line folding 4/20/84 markn ! 23: * v2: Fixed '=' command to use BOTTOM_PLUS_ONE, ! 24: * instead of TOP, added 'p' & 'v' commands 4/27/84 markn ! 25: * v3: Added -m and -t options, '-' command 5/3/84 markn ! 26: * v4: Added LESS environment variable 5/3/84 markn ! 27: * v5: New comments, fixed '-' command slightly 5/3/84 markn ! 28: * v6: Added -Q, visual bell 5/15/84 markn ! 29: * v7: Fixed jump_back(n) bug: n should count real ! 30: * lines, not folded lines. Also allow number ! 31: * on G command. 5/24/84 markn ! 32: * v8: Re-do -q and -Q commands 5/30/84 markn ! 33: * v9: Added "+<cmd>" argument 9/25/84 markn ! 34: * v10: Fixed bug in -b<n> argument processing 10/10/84 markn ! 35: * v11: Made error() ring bell if \n not entered. 10/18/84 markn ! 36: * ----------------------------------------------------------------- ! 37: * v12: Reorganized signal handling and made ! 38: * portable to 4.2bsd. 2/13/85 mark ! 39: * v13: Reword error message for '-' command. 2/16/85 mark ! 40: * v14: Added -bf and -bp variants of -b. 2/22/85 mark ! 41: * v15: Miscellaneous changes. 2/25/85 mark ! 42: * v16: Added -u flag for backspace processing. 3/13/85 mark ! 43: * v17: Added j and k commands, ! 44: * changed -t default. 4/13/85 mark ! 45: * v18: Rewrote signal handling code. 4/20/85 mark ! 46: * v19: Got rid of "verbose" eq_message(). 5/2/85 mark ! 47: * Made search() scroll in some cases. ! 48: * v20: Fixed screen.c ioctls for System V. 5/21/85 mark ! 49: * v21: Fixed some first_cmd bugs. 5/23/85 mark ! 50: * v22: Added support for no RECOMP nor REGCMP. 5/24/85 mark ! 51: * v23: Miscellanous changes and prettying up. 5/25/85 mark ! 52: * v24: Added ti,te terminal init & de-init 6/3/85 Mike Kersenbrock ! 53: * v25: Added -U flag, standout mode underlining. 6/8/85 mark ! 54: * v26: Added -M flag. 6/9/85 mark ! 55: * Use underline termcap (us) if it exists. ! 56: * v27: Renamed some variables to make unique in 6/15/85 mark ! 57: * 6 chars. Minor fix to -m. ! 58: * v28: Fixed right margin bug. 6/28/85 mark ! 59: * v29: Incorporated M.Rose's changes to signal.c 6/28/85 mark ! 60: * v30: Fixed stupid bug in argument processing. 6/29/85 mark ! 61: * v31: Added -p flag, changed repaint algorithm. 7/15/85 mark ! 62: * Added kludge for magic cookie terminals. ! 63: * v32: Added cat_file if output not a tty. 7/16/85 mark ! 64: * v33: Added -e flag and EDITOR. 7/23/85 mark ! 65: * v34: Added -s flag. 7/26/85 mark ! 66: * v35: Rewrote option handling; added option.c. 7/27/85 mark ! 67: * v36: Fixed -e flag to work if not last file. 7/29/85 mark ! 68: * v37: Added -x flag. 8/10/85 mark ! 69: * v38: Changed prompting; created prompt.c. 8/19/85 mark ! 70: * v39: (Not -p) does not initially clear screen. 8/24/85 mark ! 71: * v40: Added "skipping" indicator in forw(). 8/26/85 mark ! 72: * v41: ONLY_RETURN, control char commands, 9/17/85 mark ! 73: * faster search, other minor fixes. ! 74: * v42: Added ++ command line syntax; 9/25/85 mark ! 75: * ch_fsize for pipes. ! 76: * v43: Added -h flag, changed prim.c algorithms. 10/15/85 mark ! 77: * v44: Made END print in all cases of eof; 10/16/85 mark ! 78: * ignore SIGTTOU after receiving SIGTSTP. ! 79: * v45: Never print backspaces unless -u. 10/16/85 mark ! 80: * v46: Backwards scroll in jump_loc. 10/24/85 mark ! 81: * v47: Fixed bug in edit(): *first_cmd==0 10/30/85 mark ! 82: * v48: Use TIOCSETN instead of TIOCSETP. 11/16/85 mark ! 83: * Added marks (m and ' commands). ! 84: * ----------------------------------------------------------------- ! 85: */ ! 86: ! 87: char version[] = "@(#) less version 48";
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