Annotation of src/usr.bin/less/NEWS, Revision 1.1
1.1 ! etheisen 1: Major changes between "less" versions 278 and 290
! 2:
! 3: * Accepts GNU-style options "--help" and "--version".
! 4:
! 5: * OS/2 version looks for less.ini in $HOME before $INIT and $PATH.
! 6:
! 7: * Bug fixes
! 8:
! 9: ======================================================================
! 10:
! 11:
! 12: Major changes between "less" versions 252 and 278
! 13:
! 14: * A LESSOPEN preprocessor may now pipe the converted file data to less,
! 15: rather than writing it to a temporary file.
! 16:
! 17: * Search pattern highlighting has been fixed. It now highlights
! 18: reliably, even if a string is split across two screen lines,
! 19: contains TABs, etc.
! 20:
! 21: * The -F flag (which suppress search highlighting) has been changed
! 22: to -G. A new flag, -g, changes search highlighting to highlight
! 23: only the string found by the last search command, instead of all
! 24: strings which match the last search command.
! 25:
! 26: * New flag -I acts like -i, but ignores case even if the search
! 27: pattern contains uppercase letters.
! 28:
! 29: * Less now checks for the environment variable VISUAL before EDITOR.
! 30:
! 31: * Ported to OS/2.
! 32:
! 33: ======================================================================
! 34:
! 35:
! 36: Major changes between "less" versions 237 and 252
! 37:
! 38: * Changes in line-editing keys:
! 39: The literal key is now ^V or ^A rather than \ (backslash).
! 40: Filename completion commands (TAB and ^L) are disabled
! 41: when typing a search pattern.
! 42:
! 43: * Line-editing command keys can be redefined using lesskey.
! 44:
! 45: * Lesskey with no input file defaults to $HOME/.lesskey
! 46: rather than standard input.
! 47:
! 48: * New option -V displays version number of less.
! 49:
! 50: * New option -V displays version number of lesskey.
! 51:
! 52: * Help file less.hlp is now installed by default in /usr/local/share
! 53: rather than /usr/local/lib.
! 54:
! 55:
! 56: ======================================================================
! 57:
! 58:
! 59: Major changes between "less" versions 170 and 237
! 60:
! 61: * By popular demand, text which matches the current search pattern
! 62: is highlighted. New -F flag disables this feature.
! 63:
! 64: * Henry Spencer's regexp.c is now included, for systems which do not
! 65: have a regular expression library.
! 66: regexp.c is Copyright (c) 1986 by University of Toronto.
! 67:
! 68: * New line-editing keys, including command history (arrow keys) and
! 69: filename completion (TAB).
! 70:
! 71: * Input preprocessor allows modification of input files (e.g. uncompress)
! 72: via LESSOPEN/LESSCLOSE environment variables.
! 73:
! 74: * New -X flag disables sending termcap "ti" and "te" (initialize and
! 75: deinitialize) strings to the terminal.
! 76:
! 77: * Changing -i from within less now correctly affects a subsequent
! 78: repeated search.
! 79:
! 80: * Searching for underlined or overstruck text now works when the -u
! 81: flag is in effect, rather than the -i flag.
! 82:
! 83: * Use setlocale (LANG and LC_CTYPE environment variables) to determine
! 84: the character set if LESSCHARSET/LESSCHARDEF are not set.
! 85:
! 86: * The default format for displaying binary characters is now standout
! 87: (reverse video) rather than blinking. This can still be changed by
! 88: setting the LESSBINFMT environment variable.
! 89:
! 90: * Use autoconf installation technology.
! 91:
! 92: * Ported to MS-DOS.
! 93:
! 94: ********************************
! 95: Things that may surprise you
! 96: ********************************
! 97:
! 98: * When you enter text at the bottom of the screen (search string,
! 99: filename, etc.), some keys act different than previously.
! 100: Specifically, \ (backslash), ESC, TAB, BACKTAB, and control-L
! 101: now have line editing functions.
! 102:
! 103: * Some previous unofficial versions of less were able to display
! 104: compressed files. The new LESSOPEN/LESSCLOSE feature now provides
! 105: this functionality in a different way.
! 106:
! 107: * Some previous unofficial versions of less provided a -Z flag to
! 108: set the number of lines of text to retain between full screen scrolls.
! 109: The -z-n flag (that is, -z with a negative number) provides this
! 110: functionality.
! 111:
! 112:
! 113: ======================================================================
! 114:
! 115:
! 116: Major changes between "less" versions 123 and 170
! 117:
! 118: * New option -j allows target lines to be positioned anywhere on screen.
! 119:
! 120: * New option -S truncates displayed line at the screen width,
! 121: rather than wrapping onto the next line.
! 122:
! 123: * New option -y limits amount of forward scroll.
! 124:
! 125: * New option -T specifies a "tags" file.
! 126:
! 127: * Non-printable, non-control characters are displayed in octal.
! 128: Such characters, as well as control characters, are displayed
! 129: in blinking mode.
! 130:
! 131: * New command -+ sets an option to its default.
! 132: * New command -- sets an option to the opposite of its default.
! 133:
! 134: * Lesskey file may have a string appended to a key's action,
! 135: which acts as though typed in after the command.
! 136:
! 137: * New commands ESC-^F and ESC-^B match arbitrary types of brackets.
! 138:
! 139: * New command F monitors a growing file (like "tail -f").
! 140:
! 141: * New command | pipes a section of the input file into a shell command.
! 142:
! 143: * New command :x directly jumps to a file in the command line list.
! 144:
! 145: * Search commands have been enhanced and reorganized:
! 146: n Repeat search, same direction.
! 147: N Repeat search, opposite direction.
! 148: ESC-/ Search forward thru file boundaries
! 149: ESC-? Search backward thru file boundaries
! 150: ESC-n Repeat search thru file boundaries, same direction.
! 151: ESC-N Repeat search thru file boundaries, opposite direction.
! 152: Special character * causes search to search thru file boundaries.
! 153: Special character @ causes search to begin at start/end of file list.
! 154:
! 155: * Examining a new file adds it to the command line list.
! 156: A list of files, or an expression which matches more than one file,
! 157: may be examined; all of them are added to the command line list.
! 158:
! 159: * Environment variables LESSCHARSET and LESSCHARDEF can define
! 160: a non-ASCII character set.
! 161:
! 162: * Partial support for MSDOS, including options -R for repainting screen
! 163: on quit, -v/-V to select video mode, and -W to change window size.
! 164:
! 165:
! 166: ======================================================================
! 167:
! 168:
! 169: Major changes between "less" versions 97 and 123
! 170:
! 171: * New option (-N) causes line numbers to be displayed in the
! 172: text of the file (like vi "set nu").
! 173:
! 174: * New option (-?) prints help message immediately.
! 175:
! 176: * New option (-r) displays "raw" control characters, without
! 177: mapping them to ^X notation.
! 178:
! 179: * New option (-f) forces less to open non-regular files
! 180: (directories, etc).
! 181:
! 182: * New option (-k) can be used to specify lesskey files by name.
! 183:
! 184: * New option (-y) can be used to set a forward scroll limit
! 185: (like -h sets a backward scroll limit).
! 186:
! 187: * File marks (set by the m command) are now preserved when a new
! 188: file is edited. The ' command can thus be used to switch files.
! 189:
! 190: * New command ESC-/ searches all files (on the command line)
! 191: for a pattern.
! 192:
! 193: * New command ESC-n repeats previous search, spanning files.
! 194:
! 195: * The N command has been changed to repeat the previous search
! 196: in the reverse direction. The old N command is still available
! 197: via :n.
! 198:
! 199: * New command ESC-N repeats previous search in the reverse
! 200: direction and spanning files.
! 201:
! 202: * 8 bit characters are now supported. A new option (-g) can be
! 203: used to strip off the eighth bit (the previous behavior).
! 204:
! 205: * Options which take a following string (like -t) may now
! 206: optionally have a space between the option letter and the string.
! 207:
! 208: * Six new commands { } ( ) [ and ] can be used to match
! 209: brackets of specific types, similar to vi % command.
! 210:
! 211: * New commands z and w move forward/backward one window and
! 212: simultaneously set the window size.
! 213:
! 214: * Prompt string expansion now has %L for line number of the last
! 215: line in the file, and %E for the name of the editor.
! 216: Also, % escapes which refer to a line (b=bottom, t=top, etc.)
! 217: can use j for the jump target line.
! 218:
! 219: * New environment variable LESSEDIT can be used to tailor the
! 220: command string passed to the editor by the v command.
! 221:
! 222: * Examining a file which was previously examined will return
! 223: to the same position in the file.
! 224:
! 225: * A "%" is expanded to the current filename and a "#" to the
! 226: previous filename, in both shell commands and the E command.
! 227: (Previously % worked only in shell commands and # worked
! 228: only in the E command.)
! 229:
! 230: * New command ":ta" is equivalent to "-t".
! 231:
! 232: * New command "s" is equivalent to "-l".
! 233:
! 234: * The - command may be followed by "+X" to revert to the default
! 235: for option X, or "-X" to get the opposite of the default.
! 236:
! 237: * Lesskey files may now include characters after the action as
! 238: extra input to be parsed after the action; for example:
! 239: "toggle-option X" to toggle a specific option X.
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