Annotation of src/usr.bin/less/version.c, Revision 1.1.1.4
1.1 etheisen 1: /*
1.1.1.4 ! shadchin 2: * Copyright (C) 1984-2012 Mark Nudelman
1.1 etheisen 3: *
1.1.1.2 millert 4: * You may distribute under the terms of either the GNU General Public
5: * License or the Less License, as specified in the README file.
1.1 etheisen 6: *
1.1.1.4 ! shadchin 7: * For more information, see the README file.
1.1 etheisen 8: */
9:
10:
11: /*
12: ----------------------- CHANGE HISTORY --------------------------
13:
1.1.1.3 shadchin 14: 1/29/84 Allowed use on standard input
15: 2/1/84 Added E, N, P commands
16: 4/17/84 Added '=' command, 'stop' signal handling
17: 4/20/84 Added line folding
18: v2 4/27/84 Fixed '=' command to use BOTTOM_PLUS_ONE,
19: instead of TOP, added 'p' & 'v' commands
20: v3 5/3/84 Added -m and -t options, '-' command
21: v4 5/3/84 Added LESS environment variable
22: v5 5/3/84 New comments, fixed '-' command slightly
23: v6 5/15/84 Added -Q, visual bell
24: v7 5/24/84 Fixed jump_back(n) bug: n should count real
25: lines, not folded lines. Also allow number on G command.
26: v8 5/30/84 Re-do -q and -Q commands
27: v9 9/25/84 Added "+<cmd>" argument
28: v10 10/10/84 Fixed bug in -b<n> argument processing
29: v11 10/18/84 Made error() ring bell if \n not entered.
30: -----------------------------------------------------------------
31: v12 2/13/85 Reorganized signal handling and made portable to 4.2bsd.
32: v13 2/16/85 Reword error message for '-' command.
33: v14 2/22/85 Added -bf and -bp variants of -b.
34: v15 2/25/85 Miscellaneous changes.
35: v16 3/13/85 Added -u flag for backspace processing.
36: v17 4/13/85 Added j and k commands, changed -t default.
37: v18 4/20/85 Rewrote signal handling code.
38: v19 5/2/85 Got rid of "verbose" eq_message().
39: Made search() scroll in some cases.
40: v20 5/21/85 Fixed screen.c ioctls for System V.
41: v21 5/23/85 Fixed some first_cmd bugs.
42: v22 5/24/85 Added support for no RECOMP nor REGCMP.
43: v23 5/25/85 Miscellanous changes and prettying up.
44: Posted to USENET.
45: -----------------------------------------------------------------
46: v24 6/3/85 Added ti,te terminal init & de-init.
47: (Thanks to Mike Kersenbrock)
48: v25 6/8/85 Added -U flag, standout mode underlining.
49: v26 6/9/85 Added -M flag.
50: Use underline termcap (us) if it exists.
51: v27 6/15/85 Renamed some variables to make unique in
52: 6 chars. Minor fix to -m.
53: v28 6/28/85 Fixed right margin bug.
54: v29 6/28/85 Incorporated M.Rose's changes to signal.c
55: v30 6/29/85 Fixed stupid bug in argument processing.
56: v31 7/15/85 Added -p flag, changed repaint algorithm.
57: Added kludge for magic cookie terminals.
58: v32 7/16/85 Added cat_file if output not a tty.
59: v33 7/23/85 Added -e flag and EDITOR.
60: v34 7/26/85 Added -s flag.
61: v35 7/27/85 Rewrote option handling; added option.c.
62: v36 7/29/85 Fixed -e flag to work if not last file.
63: v37 8/10/85 Added -x flag.
64: v38 8/19/85 Changed prompting; created prompt.c.
65: v39 8/24/85 (Not -p) does not initially clear screen.
66: v40 8/26/85 Added "skipping" indicator in forw().
67: Posted to USENET.
68: -----------------------------------------------------------------
69: v41 9/17/85 ONLY_RETURN, control char commands,
70: faster search, other minor fixes.
71: v42 9/25/85 Added ++ command line syntax;
72: ch_fsize for pipes.
73: v43 10/15/85 Added -h flag, changed prim.c algorithms.
74: v44 10/16/85 Made END print in all cases of eof;
75: ignore SIGTTOU after receiv ing SIGTSTP.
76: v45 10/16/85 Never print backspaces unless -u.
77: v46 10/24/85 Backwards scroll in jump_loc.
78: v47 10/30/85 Fixed bug in edit(): *first_cmd==0
79: v48 11/16/85 Use TIOCSETN instead of TIOCSETP.
80: Added marks (m and ' commands).
81: Posted to USENET.
82: -----------------------------------------------------------------
83: v49 1/9/86 Fixed bug: signal didn't clear mcc.
84: v50 1/15/86 Added ' (quote) to gomark.
85: v51 1/16/86 Added + cmd, fixed problem if first_cmd
86: fails, made g cmd sort of "work" on pipes
87: ev en if bof is no longer buffered.
88: v52 1/17/86 Made short files work better.
89: v53 1/20/86 Added -P option.
90: v54 1/20/86 Changed help to use HELPFILE.
91: v55 1/23/86 Messages work better if not tty output.
92: v56 1/24/86 Added -l option.
93: v57 1/31/86 Fixed -l to get confirmation before
94: ov erwriting an existing file.
95: v58 8/28/86 Added filename globbing.
96: v59 9/15/86 Fixed some bugs with very long filenames.
97: v60 9/26/86 Incorporated changes from Leith (Casey)
98: Leedom for boldface and -z option.
99: v61 9/26/86 Got rid of annoying repaints after ! cmd.
100: Posted to USENET.
101: -----------------------------------------------------------------
102: v62 12/23/86 Added is_directory(); change -z default to
103: -1 instead of 24; cat-and-exit if -e and
104: file is less than a screenful.
105: v63 1/8/87 Fixed bug in cat-and-exit if > 1 file.
106: v64 1/12/87 Changed puts/putstr, putc/putchr,
107: getc/getchr to av oid name conflict with
108: stdio functions.
109: v65 1/26/87 Allowed '-' command to change NUMBER
110: v alued options (thanks to Gary Puckering)
111: v66 2/13/87 Fixed bug: prepaint should use force=1.
112: v67 2/24/87 Added !! and % expansion to ! command.
113: v68 2/25/87 Added SIGWINCH and TIOCGWINSZ support;
114: changed is_directory to bad_file.
115: (thanks to J. Robert Ward)
116: v69 2/25/87 Added SIGWIND and WIOCGETD (for Unix PC).
117: v70 3/13/87 Changed help cmd from 'h' to 'H'; better
118: error msgs in bad_file, errno_message.
119: v71 5/11/87 Changed -p to -c, made triple -c/-C
120: for clear-eol like more's -c.
121: v72 6/26/87 Added -E, -L, use $SHELL in lsystem().
122: (thanks to Stev e Spearman)
123: v73 6/26/87 Allow Examine "#" for previous file.
124: Posted to USENET 8/25/87.
125: -----------------------------------------------------------------
126: v74 9/18/87 Fix conflict in EOF symbol with stdio.h,
127: Make os.c more portable to BSD.
128: v75 9/23/87 Fix problems in get_term (thanks to
129: Paul Eggert); new backwards scrolling in
130: jump_loc (thanks to Marion Hakanson).
131: v76 9/23/87 Added -i flag; allow single "!" to
132: inv oke a shell (thanks to Franco Barber).
133: v77 9/24/87 Added -n flag and line number support.
134: v78 9/25/87 Fixed problem with prompts longer than
135: the screen width.
136: v79 9/29/87 Added the _ command.
137: v80 10/6/87 Allow signal to break out of linenum scan.
138: v81 10/6/87 Allow -b to be changed from within less.
139: v82 10/7/87 Add cmd_decode to use a table for key
140: binding (thanks to Dav id Nason).
141: v83 10/9/87 Allow .less file for user-defined keys.
142: v84 10/11/87 Fix -e/-E problems (thanks to Felix Lee).
143: v85 10/15/87 Search now keeps track of line numbers.
144: v86 10/20/87 Added -B option and autobuf; fixed
145: "pipe error" bug.
146: v87 3/1/88 Fix bug re BSD signals while reading file.
147: v88 3/12/88 Use new format for -P option (thanks to
148: der Mouse), allow "+-c" without message,
149: fix bug re BSD hangup.
150: v89 3/18/88 Turn off line numbers if linenum scan
151: is interrupted.
152: v90 3/30/88 Allow -P from within less.
153: v91 3/30/88 Added tags file support (new -t option)
154: (thanks to Brian Campbell).
155: v92 4/4/88 Added -+option syntax.
156: v93 4/11/88 Add support for slow input (thanks to
157: Joe Orost & apologies for taking almost
158: 3 years to get this in!)
159: v94 4/11/88 Redo reading/signal stuff.
160: v95 4/20/88 Repaint screen better after signal.
161: v96 4/21/88 Add /! and ?! commands.
162: v97 5/17/88 Allow -l/-L from within less.
163: Eliminate some static arrays (use calloc).
164: Posted to USENET.
165: -----------------------------------------------------------------
166: v98 10/14/88 Fix incorrect calloc call; uninitialized
167: var in exec_mca; core dump on unknown TERM.
168: Make v cmd work if past last line of file.
169: Fix some signal bugs.
170: v99 10/29/88 Allow space between -X and string,
171: when X is a string-valued option.
172: v100 1/5/89 Fix globbing bug when $SHELL not set;
173: allow spaces after -t command.
174: v101 1/6/89 Fix problem with long (truncated) lines
175: in tags file (thanks to Neil Dixon).
176: v102 1/6/89 Fix bug with E# when no prev file;
177: allow spaces after -l command.
178: v103 3/14/89 Add -N, -f and -? options. Add z and w
179: commands. Add %L for prompt strings.
180: v104 3/16/89 Added EDITPROTO.
181: v105 3/20/89 Fix bug in find_linenum which cached
182: incorrectly on long lines.
183: v106 3/31/89 Added -k option and multiple lesskey
184: files.
185: v107 4/27/89 Add 8-bit char support and -g option.
186: Split option code into 3 files.
187: v108 5/5/89 Allocate position table dynamically
188: (thanks to Paul Eggert); change % command
189: from "percent" to vi-style brace finder.
190: v109 5/10/89 Added ESC-% command, split prim.c.
191: v110 5/24/89 Fixed bug in + option; fixed repaint bug
192: under Sun windows (thanks to Paul Eggert).
193: v111 5/25/89 Generalized # and % expansion; use
194: calloc for some error messages.
195: v112 5/30/89 Get rid of ESC-%, add {}()[] commands.
196: v113 5/31/89 Optimize lseeks (thanks to Paul Eggert).
197: v114 7/25/89 Added ESC-/ and ESC-/! commands.
198: v115 7/26/89 Added ESC-n command.
199: v116 7/31/89 Added find_pos to optimize g command.
200: v117 8/1/89 Change -f option to -r.
201: v118 8/2/89 Save positions for all previous files,
202: not just the immediately previous one.
203: v119 8/7/89 Save marks across file boundaries.
204: Add file handle stuff.
205: v120 8/11/89 Add :ta command.
206: v121 8/16/89 Add -f option.
207: v122 8/30/89 Fix performance with many buffers.
208: v123 8/31/89 Verbose prompts for string options.
209: Posted beta to USENET.
210: -----------------------------------------------------------------
211: v124 9/18/89 Reorganize search commands,
212: N = rev, ESC-n = span, add ESC-N.
213: v125 9/18/89 Fix tab bug (thanks to Alex Liu).
214: Fix EOF bug when both -w and -c.
215: v126 10/25/89 Add -j option.
216: v127 10/27/89 Fix problems with blank lines before BOF.
217: v128 10/27/89 Add %bj, etc. to prompt strings.
218: v129 11/3/89 Add -+,-- commands; add set-option and
219: unset-option to lesskey.
220: v130 11/6/89 Generalize A_EXTRA to string, remove
221: set-option, unset-option from lesskey.
222: v131 11/7/89 Changed name of EDITPROTO to LESSEDIT.
223: v132 11/8/89 Allow editing of command prefix.
224: v133 11/16/89 Add -y option (thanks to Jeff Sullivan).
225: v134 12/1/89 Glob filenames in the -l command.
226: v135 12/5/89 Combined {}()[] commands into one, and
227: added ESC-^F and ESC-^B commands.
228: v136 1/20/90 Added -S, -R flags. Added | command.
229: Added warning for binary files. (thanks
230: to Richard Brittain and J. Sullivan).
231: v137 1/21/90 Rewrote horrible pappend code.
232: Added * notation for hi-bit chars.
233: v138 1/24/90 Fix magic cookie terminal handling.
234: Get rid of "cleanup" loop in ch_get.
235: v139 1/27/90 Added MSDOS support. (many thanks
236: to Richard Brittain).
237: v140 2/7/90 Editing a new file adds it to the
238: command line list.
239: v141 2/8/90 Add edit_list for editing >1 file.
240: v142 2/10/90 Add :x command.
241: v143 2/11/90 Add * and @ modifies to search cmds.
242: Change ESC-/ cmd from /@* to / *.
243: v144 3/1/90 Messed around with ch_zero;
244: no real change.
245: v145 3/2/90 Added -R and -v/-V for MSDOS;
246: renamed FILENAME to avoid conflict.
247: v146 3/5/90 Pull cmdbuf functions out of command.c
248: v147 3/7/90 Implement ?@; fix multi-file edit bugs.
249: v148 3/29/90 Fixed bug in :e<file> then :e#.
250: v149 4/3/90 Change error,ierror,query to use PARG.
251: v150 4/6/90 Add LESS_CHARSET, LESS_CHARDEF.
252: v151 4/13/90 Remove -g option; clean up ispipe.
253: v152 4/14/90 lsystem() closes input file, for
254: editors which require exclusive open.
255: v153 4/18/90 Fix bug if SHELL unset;
256: fix bug in overstrike control char.
257: v154 4/25/90 Output to fd 2 via buffer.
258: v155 4/30/90 Ignore -i if uppercase in pattern
259: (thanks to Michael Rendell.)
260: v156 5/3/90 Remove scroll limits in forw() & back();
261: causes problems with -c.
262: v157 5/4/90 Forward search starts at next real line
263: (not screen line) after jump target.
264: v158 6/14/90 Added F command.
265: v159 7/29/90 Fix bug in exiting: output not flushed.
266: v160 7/29/90 Clear screen before initial output w/ -c.
267: v161 7/29/90 Add -T flag.
268: v162 8/14/90 Fix bug with +F on command line.
269: v163 8/21/90 Added LESSBINFMT variable.
270: v164 9/5/90 Added -p, LINES, COLUMNS and
271: unset mark ' == BOF, for 1003.2 D5.
272: v165 9/6/90 At EOF with -c set, don't display empty
273: screen when try to page forward.
274: v166 9/6/90 Fix G when final line in file wraps.
275: v167 9/11/90 Translate CR/LF -> LF for 1003.2.
276: v168 9/13/90 Return to curr file if "tag not found".
277: v169 12/12/90 G goes to EOF even if file has grown.
278: v170 1/17/91 Add optimization for BSD _setjmp;
279: fix #include ioctl.h TERMIO problem.
280: (thanks to Paul Eggert)
281: Posted to USENET.
282: -----------------------------------------------------------------
283: v171 3/6/91 Fix -? bug in get_filename.
284: v172 3/15/91 Fix G bug in empty file.
285: Fix bug with ?\n and -i and uppercase
286: pattern at EOF!
287: (thanks to Paul Eggert)
288: v173 3/17/91 Change N cmd to not permanently change
289: direction. (thanks to Brian Matthews)
290: v174 3/18/91 Fix bug with namelogfile not getting
291: cleared when change files.
292: v175 3/18/91 Fix bug with ++cmd on command line.
293: (thanks to Jim Meyering)
294: v176 4/2/91 Change | to not force current screen,
295: include marked line, start/end from
296: top of screen. Improve search speed.
297: (thanks to Don Mears)
298: v177 4/2/91 Add LESSHELP variable.
299: Fix bug with F command with -e.
300: Try /dev/tty for input before using fd 2.
301: Patches posted to USENET 4/2/91.
302: -----------------------------------------------------------------
303: v178 4/8/91 Fixed bug in globbing logfile name.
304: (thanks to Jim Meyering)
305: v179 4/9/91 Allow negative -z for screen-relative.
306: v180 4/9/91 Clear to eos rather than eol if "db";
307: don't use "sr" if "da".
308: (thanks to Tor Lillqvist)
309: v181 4/18/91 Fixed bug with "negative" chars 80 - FF.
310: (thanks to Benny Sander Hofmann)
311: v182 5/16/91 Fixed bug with attribute at EOL.
312: (thanks to Brian Matthews)
313: v183 6/1/91 Rewrite linstall to do smart config.
314: v184 7/11/91 Process \b in searches based on -u
315: rather than -i.
316: v185 7/11/91 -Pxxx sets short prompt; assume SIGWINCH
317: after a SIGSTOP. (thanks to Ken Laprade)
318: -----------------------------------------------------------------
319: v186 4/20/92 Port to MS-DOS (Microsoft C).
320: v187 4/23/92 Added -D option & TAB_COMPLETE_FILENAME.
321: v188 4/28/92 Added command line editing features.
322: v189 12/8/92 Fix mem overrun in anscreen.c:init;
323: fix edit_list to recover from bin file.
324: v190 2/13/93 Make TAB enter one filename at a time;
325: create ^L with old TAB functionality.
326: v191 3/10/93 Defer creating "flash" page for MS-DOS.
327: v192 9/6/93 Add BACK-TAB.
328: v193 9/17/93 Simplify binary_file handling.
329: v194 1/4/94 Add rudiments of alt_filename handling.
330: v195 1/11/94 Port back to Unix; support keypad.
331: -----------------------------------------------------------------
332: v196 6/7/94 Fix bug with bad filename; fix IFILE
333: type problem. (thanks to David MacKenzie)
334: v197 6/7/94 Fix bug with .less tables inserted wrong.
335: v198 6/23/94 Use autoconf installation technology.
336: (thanks to David MacKenzie)
337: v199 6/29/94 Fix MS-DOS build (thanks to Tim Wiegman).
338: v200 7/25/94 Clean up copyright, minor fixes.
339: Posted to prep.ai.mit.edu
340: -----------------------------------------------------------------
341: v201 7/27/94 Check for no memcpy; add casts to calloc;
342: look for regcmp in libgen.a.
343: (thanks to Kaveh Ghazi).
344: v202 7/28/94 Fix bug in edit_next/edit_prev with
1.1.1.4 ! shadchin 345: non-existent files.
1.1.1.3 shadchin 346: v203 8/2/94 Fix a variety of configuration bugs on
347: various systems. (thanks to Sakai
348: Kiyotaka, Harald Koenig, Bjorn Brox,
349: Teemu Rantanen, and Thorsten Lockert)
350: v204 8/3/94 Use strerror if available.
351: (thanks to J.T. Conklin)
352: v205 8/5/94 Fix bug in finding "me" termcap entry.
353: (thanks to Andreas Stolcke)
354: 8/10/94 v205+: Change BUFSIZ to LBUFSIZE to avoid name
355: conflict with stdio.h.
356: Posted to prep.ai.mit.edu
357: -----------------------------------------------------------------
358: v206 8/10/94 Use initial_scrpos for -t to avoid
359: displaying first page before init().
360: (thanks to Dominique Petitpierre)
361: v207 8/12/94 Fix bug if stdout is not tty.
362: v208 8/16/94 Fix bug in close_altfile if goto err1
363: in edit_ifile. (Thanks to M.J. Hewitt)
364: v209 8/16/94 Change scroll to wscroll to avoid
365: conflict with library function.
366: v210 8/16/94 Fix bug with bold on 8 bit chars.
367: (thanks to Vitor Duarte)
368: v211 8/16/94 Don't quit on EOI in jump_loc / forw.
369: v212 8/18/94 Use time_t if available.
370: v213 8/20/94 Allow ospeed to be defined in termcap.h.
371: v214 8/20/94 Added HILITE_SEARCH, -F, ESC-u cmd.
372: (thanks to Paul Lew and Bob Byrnes)
373: v215 8/23/94 Fix -i toggle behavior.
374: v216 8/23/94 Process BS in all searches, not only -u.
375: v217 8/24/94 Added -X flag.
376: v218 8/24/94 Reimplement undo_search.
377: v219 8/24/94 Find tags marked with line number
378: instead of pattern.
379: v220 8/24/94 Stay at same position after SIG_WINCH.
380: v221 8/24/94 Fix bug in file percentage in big file.
381: v222 8/25/94 Do better if can't reopen current file.
382: v223 8/27/94 Support setlocale.
383: (thanks to Robert Joop)
384: v224 8/29/94 Revert v216: process BS in search
385: only if -u.
386: v225 9/6/94 Rewrite undo_search again: toggle.
387: v226 9/15/94 Configuration fixes.
388: (thanks to David MacKenzie)
389: v227 9/19/94 Fixed strerror config problem.
390: Posted to prep.ai.mit.edu
391: -----------------------------------------------------------------
392: v228 9/21/94 Fix bug in signals: repeated calls to
393: get_editkeys overflowed st_edittable.
394: v229 9/21/94 Fix "Nothing to search" error if -a
395: and SRCH_PAST_EOF.
396: v230 9/21/94 Don't print extra error msg in search
397: after regerror().
398: v231 9/22/94 Fix hilite bug if search matches 0 chars.
399: (thanks to John Polstra)
400: v232 9/23/94 Deal with weird systems that have
401: termios.h but not tcgetattr().
402: Posted to prep.ai.mit.edu
403: -----------------------------------------------------------------
404: v233 9/26/94 Use get_term() instead of pos_init() in
405: psignals to re-get lower_left termcap.
406: (Thanks to John Malecki)
407: v234 9/26/94 Make MIDDLE closer to middle of screen.
408: v235 9/27/94 Use local strchr if system doesn't have.
409: v236 9/28/94 Don't use libucb; use libterm if
410: libtermcap & libcurses doesn't work.
411: (Fix for Solaris; thanks to Frank Kaefer)
412: v237 9/30/94 Use system isupper() etc if provided.
413: Posted to prep.ai.mit.edu
414: -----------------------------------------------------------------
415: v238 10/6/94 Make binary non-blinking if LESSBINFMT
416: is set to a string without a *.
417: v239 10/7/94 Don't let delimit_word run back past
418: beginning of cmdbuf.
419: v240 10/10/94 Don't write into termcap buffer.
420: (Thanks to Benoit Speckel)
421: v241 10/13/94 New lesskey file format.
422: Don't expand filenames in search command.
423: v242 10/14/94 Allow lesskey specification of "literal".
424: v243 10/14/94 Add #stop command to lesskey.
425: v244 10/16/94 Add -f flag to lesskey.
426: v245 10/25/94 Allow TAB_COMPLETE_FILENAME to be undefd.
427: v246 10/27/94 Move help file to /usr/local/share.
428: v247 10/27/94 Add -V option.
429: v248 11/5/94 Add -V option to lesskey.
430: v249 11/5/94 Remove -f flag from lesskey; default
431: input file is ~/.lesskey.in, not stdin.
432: v250 11/7/94 Lesskey input file "-" means stdin.
433: v251 11/9/94 Convert cfgetospeed result to ospeed.
434: (Thanks to Andrew Chernov)
435: v252 11/16/94 Change default lesskey input file from
436: .lesskey.in to .lesskey.
437: Posted to prep.ai.mit.edu
438: -----------------------------------------------------------------
439: v253 11/21/94 Fix bug when tags file has a backslash.
440: v254 12/6/94 Fix -k option.
441: v255 12/8/94 Add #define EXAMINE to disable :e etc.
442: v256 12/10/94 Change highlighting: only highlite search
443: results (but now it is reliable).
444: v257 12/10/94 Add goto_line and repaint_highlight
445: to optimize highlight repaints.
446: v258 12/12/94 Fixup in hilite_line if BS_SPECIAL.
447: v259 12/12/94 Convert to autoconf 2.0.
448: v260 12/13/94 Add SECURE define.
449: v261 12/14/94 Use system WERASE char as EC_W_BACKSPACE.
450: v262 12/16/94 Add -g/-G flag and screen_hilite.
451: v263 12/20/94 Reimplement/optimize -G flag behavior.
452: v264 12/23/94 Allow EXTRA string after line-edit cmd
453: in lesskey file.
454: v265 12/24/94 Add LESSOPEN=|cmd syntax.
455: v266 12/26/94 Add -I flag.
456: v267 12/28/94 Formalize the four-byte header emitted
457: by a LESSOPEN pipe.
458: v268 12/28/94 Get rid of four-byte header.
459: v269 1/2/95 Close alt file before open new one.
460: Avoids multiple popen().
461: v270 1/3/95 Use VISUAL; use S_ISDIR/S_ISREG; fix
462: config problem with Solaris POSIX regcomp.
463: v271 1/4/95 Don't quit on read error.
464: v272 1/5/95 Get rid of -L.
465: v273 1/6/95 Fix ch_ungetchar bug; don't call
466: LESSOPEN on a pipe.
467: v274 1/6/95 Ported to OS/2 (thanks to Kai Uwe Rommel)
468: v275 1/18/95 Fix bug if toggle -G at EOF.
469: v276 1/30/95 Fix OS/2 version.
470: v277 1/31/95 Add "next" charset; don't display ^X
471: for X > 128.
472: v278 2/14/95 Change default for -G.
473: Posted to prep.ai.mit.edu
474: -----------------------------------------------------------------
475: v279 2/22/95 Add GNU options --help, --version.
476: Minor config fixes.
477: v280 2/24/95 Clean up calls to glob(); don't set #
478: if we can't open the new file.
479: v281 2/24/95 Repeat search should turn on hilites.
480: v282 3/2/95 Minor fixes.
481: v283 3/2/95 Fix homefile; make OS2 look in $HOME.
482: v284 3/2/95 Error if "v" on LESSOPENed file;
483: "%" figures out file size on pipe.
484: v285 3/7/95 Don't set # in lsystem;
485: lesskey try $HOME first.
486: v286 3/7/95 Reformat change history (too much free time?).
487: v287 3/8/95 Fix hilite bug if overstrike multiple chars.
488: v288 3/8/95 Allow lesskey to override get_editkey keys.
489: v289 3/9/95 Fix adj_hilite bug when line gets processed by
490: hilite_line more than once.
491: v290 3/9/95 Make configure automatically. Fix Sequent problem
492: with incompatible sigsetmask().
493: Posted to prep.ai.mit.edu
494: -----------------------------------------------------------------
495: v291 3/21/95 Add #env to lesskey. Fix MS-DOS build.
496: Posted to simtel.
497: -----------------------------------------------------------------
498: v292 4/24/95 Add MS-DOS support for Borland C.
499: Fix arrow keys in MS-DOS versions.
500: v293 4/28/95 Add auto-versioning stuff to make dist.
501: v294 5/12/95 Fix Borland build.
502: v295 1/20/96 Fix search on squished file; add /@@.
503: v296 1/23/96 Allow cmdbuf larger than screen width.
504: v297 1/24/96 Don't call termcap if tgetent fails;
505: add #defines for buffers.
506: v298 1/24/96 Change @@ to ^K.
507: Add alternate search modifiers ^N, ^F, ^E.
508: v299 1/25/96 Fix percent overflow in jump_percent (thanks to Brent Wiese);
509: don't send "ti" after shell command till RETURN pressed.
510: v300 1/25/96 Change -U to print tabs as ^I.
511: v301 1/30/96 Make hilites work in cmd F output.
512: v302 1/31/96 Fix cmd F to notice window-change signals.
513: v303 1/31/96 Add ESC-SPACE command.
514: v304 2/1/96 Add ^R search modifier; add LESSSECURE.
515: v305 2/2/96 Workaround Linux /proc kernel bug; add LESSKEY.
516: v306 3/16/96 Minor fixes.
517: v307 3/25/96 Allow cmd line arg "--"; fix DOS & OS/2 defines.h.
518: v308 4/4/96 Port to OS-9 (thanks to Boisy Pitre); fix -d.
519: v309 4/9/96 Fix OS-9 version; fix tags bug with "$".
520: v310 4/10/96 Get rid of HELPFILE.
521: v311 4/22/96 Add Windows32 support; merge doscreen.c into screen.c.
522: v312 4/24/96 Don't quit after "cannot reopen" error.
523: v313 4/25/96 Added horizontal scrolling.
524: v314 4/26/96 Modified -e to quit on reaching end of a squished file.
525: v315 4/26/96 Fix "!;TAB" bug.
526: v316 5/2/96 Make "|a" when (a < curr screen) go to end of curr screen.
527: v317 5/14/96 Various fixes for the MS-DOS and OS/2 builds.
528: Added ## and %% handling for filenames
529: v318 5/29/96 Port to OS-9 Microware compiler; minor fixes
530: (thanks to Martin Gregorie).
531: v319 7/8/96 Fix Windows port (thanks to Jeff Paquette).
532: v320 7/11/96 Final fixes for Windows port.
533: v321 7/18/96 Minor fixes.
534: Posted to Web page.
535: -----------------------------------------------------------------
536: v322 8/13/96 Fix bug in shell escape from help file; add support for
537: Microsoft Visual C under Windows; numerous small fixes.
538: v323 8/19/96 Fixes for Windows version (thanks to Simon Munton);
539: fix for Linux library weirdness (thanks to Jim Diamond);
540: port to DJGPP (thanks to Eli Zaretskii).
541: v324 8/21/96 Add support for spaces in filenames (thanks to Simon Munton).
542: v325 8/21/96 Add lessecho, for spaces in filenames under Unix.
543: v326 8/27/96 Fix DJGPP version.
544: v327 9/1/96 Reorganize lglob, make spaces in filenames work better in Unix.
545: v328 10/7/96 Append / to directory name in filename completion.
546: Fix MS-DOS and OS-9 versions.
547: v329 10/11/96 Fix more MS-DOS bugs; add LESSSEPARATOR; add -" option.
548: Add LESSMETACHARS, LESSMETAESCAPE.
549: v330 10/21/96 Minor fixes.
550: Posted to Web page.
551: -----------------------------------------------------------------
552: v331 4/22/97 Various Windows fixes (thanks to Gurusamy Sarathy).
553: v332 4/22/97 Enter filenames from cmd line into edit history.
554: Posted to Web page.
555: -----------------------------------------------------------------
556: v333 3/4/99 Changed -w to highlite new line after forward movement.
557: v334 3/9/99 Avoid overflowing prompt buffer; add %d and %D.
558: v335 3/20/99 Add EBCDIC support (thanks to Thomas Dorner).
559: Use HOMEDRIVE/HOMEPATH on Windows (thanks to Preston Bannister).
560: Posted to Web page.
561: -----------------------------------------------------------------
562: v336 4/8/99 Fix installation bugs.
563: v337 4/9/99 Fix another installation bug.
564: Posted to Web page.
565: -----------------------------------------------------------------
566: v338 4/13/99 Add support for long option names.
567: v339 4/18/99 Add \k, long option names to lesskey. Add -^P. Add :d.
568: v340 4/21/99 Add regexec2. Fix Windows build.
569: Posted to Web page.
1.1.1.2 millert 570: -----------------------------------------------------------------
571: v341 5/6/99 Add -F option; %c & ?c prompt escapes.
1.1.1.3 shadchin 572: (Thanks to Michele Maltoni)
1.1.1.2 millert 573: v342 7/22/99 Add system-wide lesskey file; allow GPL or Less License.
1.1.1.3 shadchin 574: v343 9/23/99 Support UTF-8 (Thanks to Robert Brady).
575: Add %P and ?P in prompts.
576: v344 10/27/99 -w highlights target line of g and p commands.
577: v345 10/29/99 Make -R pass thru ESC but not other control chars.
578: Posted to Web page.
1.1.1.2 millert 579: -----------------------------------------------------------------
580: v346 11/4/99 Fix bugs in long option processing; R cmd should clear hilites.
1.1.1.3 shadchin 581: Posted to Web page.
1.1.1.2 millert 582: -----------------------------------------------------------------
1.1.1.3 shadchin 583: v347 12/13/99 Fixes for DJGPP version (thanks to Eli Zaretskii).
584: v348 12/28/99 Fix deleting file with marks (thanks to Dimitar Jekov).
585: Fix color problem in DJGPP version (thanks to Eli Zaretskii).
586: v349 1/24/00 Fix minor DJGPP bugs; check environment vars for UTF-8;
587: add --with-editor (thanks to Eli, Markus Kuhn, Thomas Schoepf).
588: v350 3/1/00 Fix clear-while-standout bug.
589: v351 3/5/00 Change -M and = prompts to show top & bottom line number.
590: Posted to Web page.
591: -----------------------------------------------------------------
592: v352 3/8/00 Fix scan_option NULL dereference.
593: -----------------------------------------------------------------
594: v353 3/20/00 Fix SECURE compile bug, allow space after numeric option.
595: v354 3/23/00 Add support for PCRE; add --with-regex configure option.
596: -----------------------------------------------------------------
597: v355 6/28/00 Add -# option (thanks to Andy Levinson).
598: v356 7/5/00 Add -J option.
599: v357 7/6/00 Support sigprocmask.
600: -----------------------------------------------------------------
601: v358 7/8/00 Fix problems with #stop in lesskey file.
602: Posted to Web page.
603: -----------------------------------------------------------------
604: v359 9/10/00 Fixes for Win32 display problems (thanks to Maurizio Vairani).
605: v360 1/17/01 Move sysless to etc.
606: v361 12/4/01 Add IBM-1047 charset & EBCDIC fixes (thanks to Thomas Dorner).
607: Fix 32 bit dependencies (thanks to Paul Eggert).
608: Fix UTF-8 overstriking (thanks to Robert Brady).
609: v362 12/4/01 Make status column show search targets.
610: v363 12/6/01 Add --no-keypad option.
611: Add variable width tabstops (thanks to Peter Samuelson).
612: v364 12/10/01 Better handling of very long lines in input;
613: Fix horizontal shifting of colored text.
614: v365 12/11/01 Fix overstriking of tabs;
615: Add support for global(1) and multiple tag matches
616: (thanks to Shigio Yamaguchi and Tim Vanderhoek).
617: v366 12/11/01 Fixes for OS/2 (thanks to Kyosuke Tokoro).
618: v367 12/13/01 Allow -D and -x options to terminate without dollar sign;
619: Right/left arrow when entering N are shift cmds, not line edit.
620: v368 12/18/01 Update lesskey commands.
621: v370 12/23/01 Fix tags error messages.
622: Posted to Web page.
623: -----------------------------------------------------------------
624: v371 12/26/01 Fix new_file bug; use popen in Windows version;
625: fix some compiler warnings.
626: v372 12/29/01 Make -b be in units of 1K.
627: v373 1/14/02 Improve handling of filenames containing shell metachars.
628: v374 2/7/02 Fix memory leak; fix bug in -x argument parsing.
629: v375 4/7/02 Fix searching for SGR sequences; fix SECURE build;
630: add SGR support to DJGPP version (thanks to Eli Zaretskii).
631: v376 6/10/02 Fix bug in overstriking mulitbyte UTF-8 characters
632: (thanks to Jungshik Shin).
633: Posted to Web page.
634: -----------------------------------------------------------------
635: v377 9/10/02 Fix bug in Windows version when file contains CR;
636: fix bug in search highlights with -R;
637: make initial buffer limit really be 64K not unlimited.
638: v378 9/30/02 Misc bug fixes and compiler warning cleanup.
639: Posted to Web page.
640: -----------------------------------------------------------------
641: v379 11/23/02 Add -L option; fix bug with ctrl-K in lesskey files;
642: improve UTF-8 overstriking and underscore overstriking;
643: fix minor man page problems; change to autoconf 2.54.
644: v380 11/24/02 Make LINENUM same as POSITION.
645: v381 11/28/02 Make -N use 7 columns for line number if possible.
646: -----------------------------------------------------------------
647: v382 2/3/04 Remove copyrighted code.
648: -----------------------------------------------------------------
649: v383 2/16/04 Add history file; add -K option; improve UTF-8 handling;
650: fix some signed char bugs (thanks to Christian Biere);
651: fix some upper/lower case bugs (thanks to Bjoern Jacke);
652: add erase2 char (thanks to David Lawrence);
653: add windows charset (thanks to Dimitar Zhekov).
654: v384 2/20/04 Improvements in UTF-8 handling.
655: v385 2/23/04 Fix UTF-8 output bug.
656: -----------------------------------------------------------------
657: v386 9/13/05 Improvements to UTF-8 shift & color (thanks to Charles Levert);
658: protect against invalid LESSOPEN and LESSCLOSE values.
659: v387 9/14/05 Update Charles Levert's UTF-8 patch.
660: v388 9/14/05 Change history behavior; change most sprintf calls to snprintf.
661: v389 9/14/05 Fix copy & paste with long lines; improve performance of
662: expand_linebuf; fix crash in init_mlist;
663: v390 9/15/05 Show search matches in status column even if -G is set.
664: -----------------------------------------------------------------
665: v391 9/17/05 Fix bugs.
666: v392 10/14/05 Fix line wrapping bug.
667: v393 10/19/05 Allow multiple attributes per char; fix bold+underline bug
668: (thanks again to Charles Levert).
669: v394 11/8/05 Fix prompt bug; fix compile problem in Windows build.
670: -----------------------------------------------------------------
671: v395 1/12/07 Update Unicode tables (thanks to Charles Levert);
672: don't chmod if LESSHISTFILE = /dev/null;
673: make -f work for directories; support DESTDIR in Makefile;
674: fix sigset_t detection in configure;
675: make "t" cmd traverse tags in correct order
676: v396 1/13/07 Add compatibility with POSIX more.
677: v397 3/21/07 Allow decimal point in number for % command;
678: Allow decimal point in number for -j option;
679: Allow n command to fetch last search pattern from history
680: (thanks to arno).
681: v398 3/22/07 Don't rewrite history file if not necessary;
682: fix bug when filenames contain "$".
683: v399 3/22/07 Don't move to bottom of screen at startup;
684: don't output extraneous newlines.
685: v400 3/23/07 Allow search to find pattern after null byte (PCRE and no-regex)
686: (thanks to Michael Constant).
687: -----------------------------------------------------------------
688: v401 3/24/07 Minor documentation fixes.
689: v402 3/30/07 Fix autoconf bug when memcpy etc are inline;
690: fix bug in terminating number following -j option.
691: v403 5/25/07 Fix Windows build.
692: v404 6/5/07 Fix display bug with F command and long lines.
693: v405 6/17/07 Fix display bug when using -w option.
694: v406 6/17/07 Fix secure build.
695: v407 8/16/07 Fix bugs; support CSI chars.
696: v408 10/1/07 Fix bug in -i with non-ASCII chars.
697: v409 10/12/07 Fix crash when viewing text with invalid UTF-8 sequences.
698: v411 11/6/07 Fix case-insensitive searching with non-ASCII text.
699: v412 11/6/07 Use symbolic SEEK constants.
700: v413 11/6/07 Fix search highlight bug with non-ASCII text.
701: v414 11/6/07 Fix display bug with no-wrap terminals.
702: v415 11/14/07 Add --follow-name option.
703: v416 11/22/07 Fix crash when searching text with invalid UTF-8 sequences.
704: v417 12/31/07 Don't support single-char CSI in UTF-8 mode;
705: fix bug with -R and invalid CSI sequences;
706: fix bug searching text with SGR sequences with -r;
707: emulate SGR sequences in WIN32 build.
708: v418 12/31/07 Clean up.
709: -----------------------------------------------------------------
710: v419 1/16/08 Make CSI char 0x9B work in UTF-8 mode (thanks to Colin Watson).
711: v420 2/24/08 Add & command; fix -F option; fix '' after G.
712: v421 2/24/08 Ignore filtered lines when searching.
713: v422 3/2/08 Output CR at startup.
714: v423 5/27/08 Clean up.
715: v424 6/16/08 Fix compile bug with pcre; don't filter help file.
716: v425 7/14/08 Fix non-ANSI code in list handling in ch.c.
717: v426 10/27/08 Fix ignaw terminal handling (thanks to Per Hedeland);
718: fix binary file detection in UTF-8 mode.
719: v427 3/16/09 A few Win32 fixes (thanks to Jason Hood).
720: v428 3/30/09 Add "|-" syntax to LESSOPEN.
721: v429 4/10/09 Fix search highlighting bug with underlined text.
722: -----------------------------------------------------------------
723: v430 4/22/09 Don't pass "-" to non-pipe LESSOPEN unless it starts with "-".
724: v431 4/29/09 Fix highlight bug when match is at end of line.
725: v432 6/27/09 Better fix for highlight bugs;
726: fix new problems with ignaw terminals.
727: v433 6/28/09 Cleanup search code.
728: v434 6/29/09 More cleanup.
729: v435 7/04/09 Fix bugs with non-regex filtering.
730: v436 7/05/09 Fix memory leak.
731: -----------------------------------------------------------------
732: v437 7/14/09 Fix bug in handling some long option names;
733: make percentage calculation more accurate.
734: v438 12/29/10 Fix bugs with -i/-I and & filtering;
735: exit with status 2 on ctrl-C with -K.
736: v439 12/31/10 Add -A option.
737: v440 1/5/11 Fix bug displaying prompt after = command.
738: v441 1/21/11 Fix semi-infinite loop if no newlines in file;
739: make new -A behavior the default.
740: -----------------------------------------------------------------
741: v442 3/2/11 Fix search bug.
742: Add ctrl-G line edit command.
743: v443 4/9/11 Fix Windows build.
744: v444 6/8/11 Fix ungetc bug; remove vestiges of obsolete -l option.
1.1.1.4 ! shadchin 745: -----------------------------------------------------------------
! 746: v445 10/19/11 Fix hilite bug in backwards scroll with -J.
! 747: Fix hilite bug with backspaces.
! 748: Fix bugs handling SGR sequences in Win32 (thanks to Eric Lee).
! 749: Add support for GNU regex (thanks to Reuben Thomas).
! 750: v446 5/15/12 Up/down arrows in cmd editing search for matching cmd.
! 751: v447 5/21/12 Add ESC-F command, two-pipe LESSOPEN syntax.
! 752: v448 6/15/12 Print name of regex library in version message.
! 753: v449 6/23/12 Allow config option --with-regex=none.
! 754: v450 7/4/12 Fix EOF bug with ESC-F.
! 755: v451 7/20/12 Fix typo.
! 756: -----------------------------------------------------------------
! 757: v452 10/19/12 Fix --with-regex=none, fix "stty 0", fix Win32.
! 758: Don't quit if errors in cmd line options.
! 759: v453 10/27/12 Increase buffer sizes.
! 760: v454 11/5/12 Fix typo.
! 761: v455 11/5/12 Fix typo.
! 762: v456 11/8/12 Fix option string incompatibility.
! 763: v457 12/8/12 Use new option string syntax only after --use-backslash.
! 764: v458 4/4/13 Fix display bug in using up/down in cmd buffer.
1.1 etheisen 765: */
766:
1.1.1.4 ! shadchin 767: char version[] = "458";
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