Annotation of src/usr.bin/less/NEWS, Revision 1.1.1.4
1.1.1.2 millert 1:
2: NEWS about less
3:
4: ======================================================================
5:
6: For the latest news about less, see the "less" Web page:
7: http://www.greenwoodsoftware.com/less
8: You can also download the latest version of less from there.
9:
1.1.1.4 ! shadchin 10: To report bugs, suggestions or comments, send email to bug-less@gnu.org.
! 11:
! 12: ======================================================================
! 13:
! 14: Major changes between "less" versions 451 and 458
! 15:
! 16: * Allow backslash escaping of metacharacters in LESS environment variable
! 17: after the --use-backslash option.
! 18:
! 19: * Don't quit if syntax errors are found in command line options.
! 20:
! 21: * Increase sizes of some internal buffers.
! 22:
! 23: * Fix configure bug with --with-regex=none.
! 24:
! 25: * Fix crash with "stty rows 0".
! 26:
! 27: * Fix Win32 attribute display bug.
! 28:
! 29: * Fix display bug when using up/down arrow on the command line.
! 30:
! 31: ======================================================================
! 32:
! 33: Major changes between "less" versions 444 and 451
! 34:
! 35: * Add ESC-F command to keep reading data until a pattern is found.
! 36:
! 37: * Use exit code of LESSOPEN script if LESSOPEN starts with "||".
! 38:
! 39: * When up/down arrow is used on the command line immediately after
! 40: typing text, the next command starting with that text is found.
! 41:
! 42: * Add support for GNU regex.
! 43:
! 44: * Add configure option --with-regex=none and fix compile errors
! 45: when compiling with no regex library.
! 46:
! 47: * Fix bugs handling SGR sequences in Win32.
! 48:
! 49: * Fix possible crashes caused by malformed LESSOPEN or
! 50: LESSCLOSE variables.
! 51:
! 52: * Fix bug highlighting text which is discontiguous in the file
! 53: due to backspace processing.
! 54:
! 55: * Fix bug in displaying status column when scrolling backwards
! 56: with -J and -S in effect.
1.1.1.2 millert 57:
58: ======================================================================
59:
1.1.1.3 shadchin 60: Major changes between "less" versions 443 and 444
61:
62: * Fix bug in unget handling that can cause strange effects on the
63: command line.
64:
65: * Remove vestiges of obsolete -l option that can cause a crash.
66:
67: ======================================================================
68:
69: Major changes between "less" versions 436 and 443
70:
71: * Change search behavior such that when a search is given an explicit
72: pattern, the entire displayed screen is included in the search and
73: not just the portion after the target line.
74:
75: * Add -A option to change search behavior to the old way: only
76: the portion of the screen after the target line is searched.
77:
78: * Add %F formatting to prompt strings, replaced by the last component
79: of the input file.
80:
81: * Control-G while editing a command exits the command.
82:
83: * Less now exits with status 2 if control-C is pressed and -K is in effect.
84:
85: * Fix "ungetc overflow" when passing long commands via the -p option.
86:
87: * Fix bug in using line filtering via the & command
88: in combination with -i and -I.
89:
90: * Fix bug in handling negative arguments to the -j option.
91:
92: * Fix bug in handling %t in prompt strings.
93:
94: * Improve handling of long option names.
95:
96: * Improve percentage calculation for very large files.
97:
98: ======================================================================
99:
100: Major changes between "less" versions 429 and 436
101:
102: * Don't pass "-" to non-pipe LESSOPEN unless it starts with "-".
103:
104: * Allow a fraction as the argument to the -# (--shift) option.
105:
106: * Fix highlight bug when underlined/overstruck text matches at end of line.
107:
108: * Fix non-regex searches with ctrl-R.
109:
110: ======================================================================
111:
112: Major changes between "less" versions 424 and 429
113:
114: * LESSOPEN pipe will now be used on standard input, if the LESSOPEN
115: environment variable begins with "|-".
116:
117: * The -D option with one number now means use the normal background color.
118:
119: * Don't change permissions on history file if it is not a regular file.
120:
121: * Fix non-ANSI-compliant code that caused problems with some compilers.
122:
123: * Fix binary file detection in UTF-8 mode.
124:
125: * Fix display problems with long lines on "ignaw" terminals.
126:
127: * Fix problem interrupting the line number calculation for initial prompt.
128:
129: * Fix SGR emulation when dealing with multiple attributes (eg. bold+underline).
130:
131: * Fix highlight bug when searching for underlined/overstruck text.
132:
133: ======================================================================
134:
135: Major changes between "less" versions 418 and 424
136:
137: * New "&" command allows filtering of lines based on a pattern.
138:
139: * Status column now displays a search match, even if the matched
140: string is scrolled off screen because -S is in effect.
141:
142: * Improve behavior of -F option.
143:
144: * Allow CSI character (0x9B) to work in UTF-8 mode.
145:
146: * Output carriage return at startup in case terminal doesn't default
147: to column 1.
148:
149: * Fix bug in '' (quote, quote) command after G command.
150:
151: ======================================================================
152:
153: Major changes between "less" versions 416 and 418
154:
155: * Color escape sequences are now supported in WIN32 build.
156:
157: * Makefile now uses EXEEXT feature of autoconf.
158:
159: * Fix search bug when using -R and text contains ANSI color escape sequences.
160:
161: * Fix crash when using -r with UTF-8 text containing 0x9B bytes.
162:
163: * Fix display bug when using ' command to move less than one page forward.
164:
165: * Update GPL to version 3.
166:
167: ======================================================================
168:
169: Major changes between "less" versions 409 and 416
170:
171: * New --follow-name option makes F command follow the name of a file
172: rather than the file descriptor if an open file is renamed.
173:
174: * Make searching with -i/-I work correctly with non-ASCII text.
175:
176: * Fix DJGPP build.
177:
178: ======================================================================
179:
180: Major changes between "less" versions 406 and 409
181:
182: * Support CSI escape sequences, like SGR escape sequences.
183:
184: * Fix bug which caused screen to fail to repaint when window is resized.
185:
186: * Fix bug in using -i and -I flags with non-ASCII text.
187:
188: * Fix configure bug on systems which don't support langinfo.h.
189:
190: * Fix crash when searching text containing certain invalid UTF-8 sequences.
191:
192: ======================================================================
193:
194: Major changes between "less" versions 394 and 406
195:
196: * Allow decimal point in number for % (percent) command.
197:
198: * Allow decimal point in number for -j option (fraction of screen height).
199:
200: * Make n command fetch previous pattern from history file on first search.
201:
202: * Don't rewrite history file if it has not changed.
203:
204: * Don't move to bottom of screen on first page.
205:
206: * Don't output extraneous newlines, so copy & pasting lines from the
207: output works better.
208:
209: * The -c option has been made identical with the -C option.
210:
211: * Allow "/dev/null" as synomym for "-" in LESSHISTFILE to indicate
212: that no history file should be used.
213:
214: * Search can now find text which follows a null byte, if the PCRE
215: library is used, or if no-regex searching (ctrl-R) is used.
216:
217: * Better compatibility with POSIX more specification.
218:
219: * Make -f work for directories.
220:
221: * Make "t" cmd traverse tags in the correct order.
222:
223: * Allow a few binary characters in the input file before warning
224: that the file is binary.
225:
226: * Don't warn that file is binary if it merely contains ANSI color sequences
227: and -R is in effect.
228:
229: * Update Unicode character tables.
230:
231: * Support DESTDIR in Makefile.
232:
233: * Fix bug when filename contains certain shell metacharacters such as "$".
234:
235: * Fix bug when resizing the window while waiting for input from a pipe.
236:
237: * Fix configure bugs.
238:
239: ======================================================================
240:
241: Major changes between "less" versions 382 and 394
242:
243: * Add history file to save search and shell command history between
244: invocations of less.
245:
246: * Improve behavior of history list for search and shell commands.
247:
248: * Add -K (or --quit-on-intr) option to make less exit immediately on ctrl-C.
249:
250: * Improve handling of UTF-8 files and commands, including better
251: line wrapping and handling double-width chars.
252:
253: * Added LESSUTFBINFMT environment variable to control display of
254: non-printable characters in a UTF-8 file.
255:
256: * Add --with-secure option to configure, to make it easier to
257: build a secure version of less.
258:
259: * Show search matches in the status column even if search highlights
260: are disabled via the -G option or the ESC-u command.
261:
262: * Improve performance when the file contains very long lines.
263:
264: * Add "windows" charset.
265:
266: * Add man page for lessecho.
267:
268: * Add support for erase2 character, treated same as erase.
269:
270: * Use ASCII lowercase/uppercase logic when operating on the command line.
271:
272: * Update makefile for Borland C++ 5.5.1.
273:
274: * Fix bug in calculating number of pages for %D prompt.
275:
276: * Fix bug in handling tag file error.
277:
278: * Fix obscure bug if input file is deleted while viewing help.
279:
280: * Fix bug handling filenames which include square brackets.
281:
282: * Fix possible buffer overflow in "global" tag search.
283:
284: * Fix possible buffer overflow in usage of LESSOPEN and LESSCLOSE.
285:
286: * Fix buffer overflow in reverse search.
287:
288: ======================================================================
289:
290: Major changes between "less" versions 381 and 382
291:
292: * Removed some old copyrighted code.
293: This probably breaks OS/9 support.
294:
295: ======================================================================
1.1.1.2 millert 296:
297: Major changes between "less" versions 378 and 381
298:
299: * New -L option to disable LESSOPEN processing.
300:
301: * Further support for large (64 bit) file addressing.
302: Large file support is now set up by the configure script.
303:
304: * Use autoconf 2.54.
305: Replace configure.in, acconfig.h, defines.h.top with configure.ac.
306:
307: * Overstriking underscore with underscore is now bold or underlined
308: depending on context.
309:
310: * Use only 7 spaces for line numbers in -N mode, if possible.
311:
312: * Fix some bugs in handling overstriking in UTF-8 files.
313:
314: * Fix some nroff issues in the man page.
315:
316: ======================================================================
317:
318: Major changes between "less" versions 376 and 378
319:
320: * Bug fixes:
321: Default buffer space is now 64K as documented.
322: Search highlighting works properly when used with -R.
323: Windows version works properly when input file contains carriage returns.
324: Clean up some compiler warnings.
325:
326: ======================================================================
327:
328: Major changes between "less" versions 358 and 376
329:
330: * -x option can now specify multiple variable-width tab stops.
331:
332: * -X option no longer disables keypad initialization.
333: New option --no-keypad disables keypad initialization.
334:
335: * New commands t and T step through multiple tag matches.
336: Added support for "global(1)" tags
337: (see http://www.gnu.org/software/global/global.html).
338:
339: * New prompt style set by option -Pw defines the message printed
340: while waiting for data in the F command.
341:
342: * System-wide lesskey file now defaults to sysless in etc directory
343: instead of .sysless in bin directory.
344: Use "configure --sysconfdir=..." to change it.
345: (For backwards compatibility, .sysless in bin is still recognized.)
346:
347: * Pressing RightArrow or LeftArrow while entering a number now shifts
348: the display N columns rather than editing the number itself.
349:
350: * Status column (enabled with -J) now shows search results.
351:
352: * Windows version sets window title.
353:
354: * Default LESSCHARSET for MS-DOS versions is now "dos".
355:
356: * Searching works better with ANSI (SGR) escape sequences.
357: ANSI color escape sequences are now supported in the MS-DOS (DJGPP) version.
358:
359: * Improved performance in reading very large pipes.
360:
361: * Eliminated some dependencies on file offets being 32 bits.
362:
363: * Fixed problems when viewing files with very long lines.
364:
365: * Fixed overstriking in UTF-8 mode, and overstriking tabs.
366:
367: * Improved horizontal shifting of text using -R option with ANSI color.
368:
369: * Improved handling of filenames containing shell metacharacters.
370:
371: * Some fixes for EBCDIC systems.
372:
373: * Some fixes for OS/2 systems.
374:
375: ======================================================================
376:
377: Major changes between "less" versions 354 and 358
378:
379: * Add -J (--status-column) option to display a status column.
380:
381: * Add -# (--shift) option to set default horizontal shift distance.
382: Default horizontal shift distance is now one-half screen width.
383:
384: * Horizontal shifting does not shift line numbers if -N is in effect.
385:
386: * Horizontal shifting acts as though -S were set, to avoid confusion.
387:
388: ======================================================================
389:
390:
391: Major changes between "less" versions 352 and 354
392:
393: * Allow space after numeric-valued command line options.
394:
395: * Fix problem with configuring terminal libraries on some systems.
396:
397: * Add support for PCRE regular expression library.
398:
399: * Add --with-regex option to configure to allow manually selecting
400: a regular expression library.
401:
402: * Fix bug compiling with SECURE = 1.
403:
404: ======================================================================
405:
406:
407: Major changes between "less" versions 346 and 352
408:
409: * Enable UTF-8 if "UTF-8" appears in locale-related environment variables.
410:
411: * Add --with-editor option to configure script.
412:
413: * The -M prompt and = message now show the top and bottom line number.
414:
415: * Fix bug in running the editor on a file whose name contains quotes, etc.
416:
417: * Fix bug in horizontal scrolling of long lines.
418:
419: * Fix bug in doing :d on a file which contains marks.
420:
421: * Fix bug causing cleared lines to sometimes be filled with standout,
422: bold, underline, etc. on certain terminals.
423:
424: * Fixes for MS-DOS (DJGPP) version.
425:
426: ======================================================================
427:
428:
429: Major changes between "less" versions 340 and 346
430:
431: * The UTF-8 character set is now supported.
432:
433: * The default character set is now latin1 rather than ascii.
434:
435: * New option -R (--RAW-CONTROL-CHARS) is like -r but handles
436: long (wrapped) lines correctly, as long as the input contains only
437: normal text and ANSI color escape sequences.
438:
439: * New option -F (--quit-if-one-screen) quits if the text fits on
440: the first screen.
441:
442: * The -w option now highlights the target line of a g or p command.
443:
444: * A system-wide lesskey file is supported (LESSKEY_SYSTEM).
445:
446: * New escape for prompt strings: %c is replaced by column number.
447:
448: * New escape for prompt strings: %P is replaced by percentage into
449: file, based on line number rather than byte offset.
450:
451: * HOME and END keys now jump to beginning of file or end of file.
452:
453: ======================================================================
454:
455:
456: Major changes between "less" versions 337 and 340
457:
458: * Command line options for less may now be given in either the old
459: single-letter form, or a new long name form (--option-name).
460: See the less man page or "less --help" for the list of long option names.
461:
462: * Command line options for lesskey may now be given in a new long name
463: form. See the lesskey man page for the list of long option names.
464:
465: * New command -- toggles an option using the long option name.
466:
467: * New command __ queries an option using the long option name.
468:
469: * The old -- command is renamed as -!.
470:
471: * If a ^P is entered between the dash and the option letter of the -
472: command, the message describing the new setting is suppressed.
473:
474: * Lesskey files may now contain \k escape sequences to represent the
475: "special" keys (arrows, PAGE-UP/PAGE-DOWN, HOME, END, INSERT, DELETE).
476:
477: * New command :d removes the current file from the list of files.
478:
479: * New option -~ (like -w before version 335)
480: suppresses tildes after end-of-file.
481:
482: * Less is now released under the GNU General Public License.
483:
484: ======================================================================
485:
486:
487: Major changes between "less" versions 335 and 337
488:
489: * Fixed bugs in "make install".
490:
491: ======================================================================
492:
493:
494: Major changes between "less" versions 332 and 335
495:
496: * The old -w flag (suppress tildes after end-of-file) has been removed.
497:
498: * New -w flag highlights the first new line after a forward-screen.
499:
500: * New -W flag highlights the first new line after any forward movement.
501:
502: * Window resize works even if LINES and/or COLUMNS environment
503: variables are incorrect.
504:
505: * New percent escapes for prompt strings:
506: %d is replaced by the page number, and
507: %D is replaced by the number of pages in the file.
508:
509: * Added charsets "iso8859" and "ebcdic".
510:
511: * In Windows version, uses HOMEDRIVE and HOMEPATH if HOME is not defined.
512:
513: * Fixed some bugs causing incorrect display on DOS/Windows.
514:
515: ======================================================================
516:
517:
518: Major changes between "less" versions 330 and 332
519:
520: * Filenames from the command line are entered into the command history,
521: so UPARROW/DOWNARROW can be used to retrieve them from the :e command.
522:
523: * Now works correctly on Windows when using a scrolling terminal
524: window (buffer larger than display window).
525:
526: * On Windows, now restores the console screen on exit.
527: Use -X to get the old behavior.
528:
529: * Fixed bug on Windows when CAPS-LOCK or NUM-LOCK is pressed.
530:
531: * Fixed bug on Windows when piping output of an interactive program.
532:
533: * Fixed bug in tags file processing when tags file has DOS-style
534: line terminators (CR/LF).
535:
536: * Fixed compilation problem on OS/2.
537:
538: ======================================================================
539:
540:
541: Major changes between "less" versions 321 and 330
542:
543: * Now supports filenames containing spaces (in double quotes).
544: New option -" can be used to change the quoting characters.
545:
546: * In filename completion, a slash is appended to a directory name.
547: If the environment variable LESSSEPARATOR is set, the value of
548: that variable, rather than a slash, is appended.
549:
550: * LeftArrow and RightArrow are same as ESC-[ and ESC-].
551:
552: * Added commands ESC-( and ESC-), same as ESC-[ and ESC-].
553:
554: * A "quit" command defined in a lesskey file may now have an "extra"
555: string, which is used to return an exit code from less when it quits.
556:
557: * New environment variables LESSMETACHARS and LESSMETAESCAPE provide
558: more control over how less interfaces to the shell.
559:
560: * Ported to Microsoft Visual C compiler for Windows.
561:
562: * Ported to DJGPP compiler for MS-DOS.
563:
564: * Bug fixes.
565:
566: ======================================================================
567:
568:
569: Major changes between "less" versions 291 and 321
570:
571: * Command line at bottom of screen now scrolls, so it can be longer
572: than the screen width.
573:
574: * New commands ESC-] and ESC-[ scroll the display horizontally.
575:
576: * New command ESC-SPACE scrolls forward a full screen, even if it
577: hits end-of-file.
578:
579: * Alternate modifiers for search commands: ^N is same as !,
580: ^F is same as @, and ^E is same as *.
581:
582: * New modifier for search commands: ^K means highlight the matches
583: currently on-screen, but don't move to the first match.
584:
585: * New modifier for search commands: ^R means don't use regular
586: expressions in the search.
587:
588: * Environment variable LESSKEY gives name of default lesskey file.
589:
590: * Environment variable LESSSECURE will force less to run in
591: "secure" mode.
592:
593: * Command line argument "--" signals that the rest of the arguments
594: are files (not option flags).
595:
596: * Help file (less.hlp) is no longer installed. Help text is now
597: embedded in the less executable itself.
598:
599: * Added -Ph to change the prompt for the help text.
600: Added -Ps to change the default short prompt (same as plain -P).
601:
602: * Ported to the Borland C compiler for MS-DOS.
603:
604: * Ported to Windows 95 & Windows NT.
605:
606: * Ported to OS-9.
607:
608: * Ported to GNU Hurd.
609:
610: ======================================================================
611:
612:
613: Major changes between "less" versions 290 and 291
614:
615: * Less environment variables can be specified in lesskey files.
616:
617: * Fixed MS-DOS build.
618:
619: ======================================================================
620:
621:
1.1 etheisen 622: Major changes between "less" versions 278 and 290
623:
624: * Accepts GNU-style options "--help" and "--version".
625:
626: * OS/2 version looks for less.ini in $HOME before $INIT and $PATH.
627:
628: * Bug fixes
629:
630: ======================================================================
631:
632:
633: Major changes between "less" versions 252 and 278
634:
635: * A LESSOPEN preprocessor may now pipe the converted file data to less,
636: rather than writing it to a temporary file.
637:
638: * Search pattern highlighting has been fixed. It now highlights
639: reliably, even if a string is split across two screen lines,
640: contains TABs, etc.
641:
642: * The -F flag (which suppress search highlighting) has been changed
643: to -G. A new flag, -g, changes search highlighting to highlight
644: only the string found by the last search command, instead of all
645: strings which match the last search command.
646:
647: * New flag -I acts like -i, but ignores case even if the search
648: pattern contains uppercase letters.
649:
650: * Less now checks for the environment variable VISUAL before EDITOR.
651:
652: * Ported to OS/2.
653:
654: ======================================================================
655:
656:
657: Major changes between "less" versions 237 and 252
658:
659: * Changes in line-editing keys:
660: The literal key is now ^V or ^A rather than \ (backslash).
661: Filename completion commands (TAB and ^L) are disabled
662: when typing a search pattern.
663:
664: * Line-editing command keys can be redefined using lesskey.
665:
666: * Lesskey with no input file defaults to $HOME/.lesskey
667: rather than standard input.
668:
669: * New option -V displays version number of less.
670:
671: * New option -V displays version number of lesskey.
672:
673: * Help file less.hlp is now installed by default in /usr/local/share
674: rather than /usr/local/lib.
675:
676:
677: ======================================================================
678:
679:
680: Major changes between "less" versions 170 and 237
681:
682: * By popular demand, text which matches the current search pattern
683: is highlighted. New -F flag disables this feature.
684:
685: * Henry Spencer's regexp.c is now included, for systems which do not
686: have a regular expression library.
687: regexp.c is Copyright (c) 1986 by University of Toronto.
688:
689: * New line-editing keys, including command history (arrow keys) and
690: filename completion (TAB).
691:
692: * Input preprocessor allows modification of input files (e.g. uncompress)
693: via LESSOPEN/LESSCLOSE environment variables.
694:
695: * New -X flag disables sending termcap "ti" and "te" (initialize and
696: deinitialize) strings to the terminal.
697:
698: * Changing -i from within less now correctly affects a subsequent
699: repeated search.
700:
701: * Searching for underlined or overstruck text now works when the -u
702: flag is in effect, rather than the -i flag.
703:
704: * Use setlocale (LANG and LC_CTYPE environment variables) to determine
705: the character set if LESSCHARSET/LESSCHARDEF are not set.
706:
707: * The default format for displaying binary characters is now standout
708: (reverse video) rather than blinking. This can still be changed by
709: setting the LESSBINFMT environment variable.
710:
711: * Use autoconf installation technology.
712:
713: * Ported to MS-DOS.
714:
715: ********************************
716: Things that may surprise you
717: ********************************
718:
719: * When you enter text at the bottom of the screen (search string,
720: filename, etc.), some keys act different than previously.
721: Specifically, \ (backslash), ESC, TAB, BACKTAB, and control-L
722: now have line editing functions.
723:
724: * Some previous unofficial versions of less were able to display
725: compressed files. The new LESSOPEN/LESSCLOSE feature now provides
726: this functionality in a different way.
727:
728: * Some previous unofficial versions of less provided a -Z flag to
729: set the number of lines of text to retain between full screen scrolls.
730: The -z-n flag (that is, -z with a negative number) provides this
731: functionality.
732:
733:
734: ======================================================================
735:
736:
737: Major changes between "less" versions 123 and 170
738:
739: * New option -j allows target lines to be positioned anywhere on screen.
740:
741: * New option -S truncates displayed line at the screen width,
742: rather than wrapping onto the next line.
743:
744: * New option -y limits amount of forward scroll.
745:
746: * New option -T specifies a "tags" file.
747:
748: * Non-printable, non-control characters are displayed in octal.
749: Such characters, as well as control characters, are displayed
750: in blinking mode.
751:
752: * New command -+ sets an option to its default.
753: * New command -- sets an option to the opposite of its default.
754:
755: * Lesskey file may have a string appended to a key's action,
756: which acts as though typed in after the command.
757:
758: * New commands ESC-^F and ESC-^B match arbitrary types of brackets.
759:
760: * New command F monitors a growing file (like "tail -f").
761:
762: * New command | pipes a section of the input file into a shell command.
763:
764: * New command :x directly jumps to a file in the command line list.
765:
766: * Search commands have been enhanced and reorganized:
767: n Repeat search, same direction.
768: N Repeat search, opposite direction.
769: ESC-/ Search forward thru file boundaries
770: ESC-? Search backward thru file boundaries
771: ESC-n Repeat search thru file boundaries, same direction.
772: ESC-N Repeat search thru file boundaries, opposite direction.
773: Special character * causes search to search thru file boundaries.
774: Special character @ causes search to begin at start/end of file list.
775:
776: * Examining a new file adds it to the command line list.
777: A list of files, or an expression which matches more than one file,
778: may be examined; all of them are added to the command line list.
779:
780: * Environment variables LESSCHARSET and LESSCHARDEF can define
781: a non-ASCII character set.
782:
783: * Partial support for MSDOS, including options -R for repainting screen
784: on quit, -v/-V to select video mode, and -W to change window size.
785:
786:
787: ======================================================================
788:
789:
790: Major changes between "less" versions 97 and 123
791:
792: * New option (-N) causes line numbers to be displayed in the
793: text of the file (like vi "set nu").
794:
795: * New option (-?) prints help message immediately.
796:
797: * New option (-r) displays "raw" control characters, without
798: mapping them to ^X notation.
799:
800: * New option (-f) forces less to open non-regular files
801: (directories, etc).
802:
803: * New option (-k) can be used to specify lesskey files by name.
804:
805: * New option (-y) can be used to set a forward scroll limit
806: (like -h sets a backward scroll limit).
807:
808: * File marks (set by the m command) are now preserved when a new
809: file is edited. The ' command can thus be used to switch files.
810:
811: * New command ESC-/ searches all files (on the command line)
812: for a pattern.
813:
814: * New command ESC-n repeats previous search, spanning files.
815:
816: * The N command has been changed to repeat the previous search
817: in the reverse direction. The old N command is still available
818: via :n.
819:
820: * New command ESC-N repeats previous search in the reverse
821: direction and spanning files.
822:
823: * 8 bit characters are now supported. A new option (-g) can be
824: used to strip off the eighth bit (the previous behavior).
825:
826: * Options which take a following string (like -t) may now
827: optionally have a space between the option letter and the string.
828:
829: * Six new commands { } ( ) [ and ] can be used to match
830: brackets of specific types, similar to vi % command.
831:
832: * New commands z and w move forward/backward one window and
833: simultaneously set the window size.
834:
835: * Prompt string expansion now has %L for line number of the last
836: line in the file, and %E for the name of the editor.
837: Also, % escapes which refer to a line (b=bottom, t=top, etc.)
838: can use j for the jump target line.
839:
840: * New environment variable LESSEDIT can be used to tailor the
841: command string passed to the editor by the v command.
842:
843: * Examining a file which was previously examined will return
844: to the same position in the file.
845:
846: * A "%" is expanded to the current filename and a "#" to the
847: previous filename, in both shell commands and the E command.
848: (Previously % worked only in shell commands and # worked
849: only in the E command.)
850:
851: * New command ":ta" is equivalent to "-t".
852:
853: * New command "s" is equivalent to "-l".
854:
855: * The - command may be followed by "+X" to revert to the default
856: for option X, or "-X" to get the opposite of the default.
857:
858: * Lesskey files may now include characters after the action as
859: extra input to be parsed after the action; for example:
860: "toggle-option X" to toggle a specific option X.
1.1.1.3 shadchin 861:
862:
863:
864:
865:
![[BACK]](/icons/back.gif){kind=icon}
Return to NEWS CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [local] / src / usr.bin / less