Annotation of src/usr.bin/less/version.c, Revision 1.1.1.1
1.1 etheisen 1: /*
2: * Copyright (c) 1984,1985,1989,1994,1995 Mark Nudelman
3: * All rights reserved.
4: *
5: * Redistribution and use in source and binary forms, with or without
6: * modification, are permitted provided that the following conditions
7: * are met:
8: * 1. Redistributions of source code must retain the above copyright
9: * notice, this list of conditions and the following disclaimer.
10: * 2. Redistributions in binary form must reproduce the above copyright
11: * notice in the documentation and/or other materials provided with
12: * the distribution.
13: *
14: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY
15: * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
17: * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE
18: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
19: * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
20: * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
21: * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
22: * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
23: * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
24: * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25: */
26:
27:
28: /*
29: ----------------------- CHANGE HISTORY --------------------------
30:
31: 1/29/84 Allowed use on standard input
32: 2/1/84 Added E, N, P commands
33: 4/17/84 Added '=' command, 'stop' signal handling
34: 4/20/84 Added line folding
35: v2 4/27/84 Fixed '=' command to use BOTTOM_PLUS_ONE,
36: instead of TOP, added 'p' & 'v' commands
37: v3 5/3/84 Added -m and -t options, '-' command
38: v4 5/3/84 Added LESS environment variable
39: v5 5/3/84 New comments, fixed '-' command slightly
40: v6 5/15/84 Added -Q, visual bell
41: v7 5/24/84 Fixed jump_back(n) bug: n should count real
42: lines, not folded lines. Also allow number on G command.
43: v8 5/30/84 Re-do -q and -Q commands
44: v9 9/25/84 Added "+<cmd>" argument
45: v10 10/10/84 Fixed bug in -b<n> argument processing
46: v11 10/18/84 Made error() ring bell if \n not entered.
47: -----------------------------------------------------------------
48: v12 2/13/85 Reorganized signal handling and made portable to 4.2bsd.
49: v13 2/16/85 Reword error message for '-' command.
50: v14 2/22/85 Added -bf and -bp variants of -b.
51: v15 2/25/85 Miscellaneous changes.
52: v16 3/13/85 Added -u flag for backspace processing.
53: v17 4/13/85 Added j and k commands, changed -t default.
54: v18 4/20/85 Rewrote signal handling code.
55: v19 5/2/85 Got rid of "verbose" eq_message().
56: Made search() scroll in some cases.
57: v20 5/21/85 Fixed screen.c ioctls for System V.
58: v21 5/23/85 Fixed some first_cmd bugs.
59: v22 5/24/85 Added support for no RECOMP nor REGCMP.
60: v23 5/25/85 Miscellanous changes and prettying up.
61: Posted to USENET.
62: -----------------------------------------------------------------
63: v24 6/3/85 Added ti,te terminal init & de-init.
64: (Thanks to Mike Kersenbrock)
65: v25 6/8/85 Added -U flag, standout mode underlining.
66: v26 6/9/85 Added -M flag.
67: Use underline termcap (us) if it exists.
68: v27 6/15/85 Renamed some variables to make unique in
69: 6 chars. Minor fix to -m.
70: v28 6/28/85 Fixed right margin bug.
71: v29 6/28/85 Incorporated M.Rose's changes to signal.c
72: v30 6/29/85 Fixed stupid bug in argument processing.
73: v31 7/15/85 Added -p flag, changed repaint algorithm.
74: Added kludge for magic cookie terminals.
75: v32 7/16/85 Added cat_file if output not a tty.
76: v33 7/23/85 Added -e flag and EDITOR.
77: v34 7/26/85 Added -s flag.
78: v35 7/27/85 Rewrote option handling; added option.c.
79: v36 7/29/85 Fixed -e flag to work if not last file.
80: v37 8/10/85 Added -x flag.
81: v38 8/19/85 Changed prompting; created prompt.c.
82: v39 8/24/85 (Not -p) does not initially clear screen.
83: v40 8/26/85 Added "skipping" indicator in forw().
84: Posted to USENET.
85: -----------------------------------------------------------------
86: v41 9/17/85 ONLY_RETURN, control char commands,
87: faster search, other minor fixes.
88: v42 9/25/85 Added ++ command line syntax;
89: ch_fsize for pipes.
90: v43 10/15/85 Added -h flag, changed prim.c algorithms.
91: v44 10/16/85 Made END print in all cases of eof;
92: ignore SIGTTOU after receiv ing SIGTSTP.
93: v45 10/16/85 Never print backspaces unless -u.
94: v46 10/24/85 Backwards scroll in jump_loc.
95: v47 10/30/85 Fixed bug in edit(): *first_cmd==0
96: v48 11/16/85 Use TIOCSETN instead of TIOCSETP.
97: Added marks (m and ' commands).
98: Posted to USENET.
99: -----------------------------------------------------------------
100: v49 1/9/86 Fixed bug: signal didn't clear mcc.
101: v50 1/15/86 Added ' (quote) to gomark.
102: v51 1/16/86 Added + cmd, fixed problem if first_cmd
103: fails, made g cmd sort of "work" on pipes
104: ev en if bof is no longer buffered.
105: v52 1/17/86 Made short files work better.
106: v53 1/20/86 Added -P option.
107: v54 1/20/86 Changed help to use HELPFILE.
108: v55 1/23/86 Messages work better if not tty output.
109: v56 1/24/86 Added -l option.
110: v57 1/31/86 Fixed -l to get confirmation before
111: ov erwriting an existing file.
112: v58 8/28/86 Added filename globbing.
113: v59 9/15/86 Fixed some bugs with very long filenames.
114: v60 9/26/86 Incorporated changes from Leith (Casey)
115: Leedom for boldface and -z option.
116: v61 9/26/86 Got rid of annoying repaints after ! cmd.
117: Posted to USENET.
118: -----------------------------------------------------------------
119: v62 12/23/86 Added is_directory(); change -z default to
120: -1 instead of 24; cat-and-exit if -e and
121: file is less than a screenful.
122: v63 1/8/87 Fixed bug in cat-and-exit if > 1 file.
123: v64 1/12/87 Changed puts/putstr, putc/putchr,
124: getc/getchr to av oid name conflict with
125: stdio functions.
126: v65 1/26/87 Allowed '-' command to change NUMBER
127: v alued options (thanks to Gary Puckering)
128: v66 2/13/87 Fixed bug: prepaint should use force=1.
129: v67 2/24/87 Added !! and % expansion to ! command.
130: v68 2/25/87 Added SIGWINCH and TIOCGWINSZ support;
131: changed is_directory to bad_file.
132: (thanks to J. Robert Ward)
133: v69 2/25/87 Added SIGWIND and WIOCGETD (for Unix PC).
134: v70 3/13/87 Changed help cmd from 'h' to 'H'; better
135: error msgs in bad_file, errno_message.
136: v71 5/11/87 Changed -p to -c, made triple -c/-C
137: for clear-eol like more's -c.
138: v72 6/26/87 Added -E, -L, use $SHELL in lsystem().
139: (thanks to Stev e Spearman)
140: v73 6/26/87 Allow Examine "#" for previous file.
141: Posted to USENET 8/25/87.
142: -----------------------------------------------------------------
143: v74 9/18/87 Fix conflict in EOF symbol with stdio.h,
144: Make os.c more portable to BSD.
145: v75 9/23/87 Fix problems in get_term (thanks to
146: Paul Eggert); new backwards scrolling in
147: jump_loc (thanks to Marion Hakanson).
148: v76 9/23/87 Added -i flag; allow single "!" to
149: inv oke a shell (thanks to Franco Barber).
150: v77 9/24/87 Added -n flag and line number support.
151: v78 9/25/87 Fixed problem with prompts longer than
152: the screen width.
153: v79 9/29/87 Added the _ command.
154: v80 10/6/87 Allow signal to break out of linenum scan.
155: v81 10/6/87 Allow -b to be changed from within less.
156: v82 10/7/87 Add cmd_decode to use a table for key
157: binding (thanks to Dav id Nason).
158: v83 10/9/87 Allow .less file for user-defined keys.
159: v84 10/11/87 Fix -e/-E problems (thanks to Felix Lee).
160: v85 10/15/87 Search now keeps track of line numbers.
161: v86 10/20/87 Added -B option and autobuf; fixed
162: "pipe error" bug.
163: v87 3/1/88 Fix bug re BSD signals while reading file.
164: v88 3/12/88 Use new format for -P option (thanks to
165: der Mouse), allow "+-c" without message,
166: fix bug re BSD hangup.
167: v89 3/18/88 Turn off line numbers if linenum scan
168: is interrupted.
169: v90 3/30/88 Allow -P from within less.
170: v91 3/30/88 Added tags file support (new -t option)
171: (thanks to Brian Campbell).
172: v92 4/4/88 Added -+option syntax.
173: v93 4/11/88 Add support for slow input (thanks to
174: Joe Orost & apologies for taking almost
175: 3 years to get this in!)
176: v94 4/11/88 Redo reading/signal stuff.
177: v95 4/20/88 Repaint screen better after signal.
178: v96 4/21/88 Add /! and ?! commands.
179: v97 5/17/88 Allow -l/-L from within less.
180: Eliminate some static arrays (use calloc).
181: Posted to USENET.
182: -----------------------------------------------------------------
183: v98 10/14/88 Fix incorrect calloc call; uninitialized
184: var in exec_mca; core dump on unknown TERM.
185: Make v cmd work if past last line of file.
186: Fix some signal bugs.
187: v99 10/29/88 Allow space between -X and string,
188: when X is a string-valued option.
189: v100 1/5/89 Fix globbing bug when $SHELL not set;
190: allow spaces after -t command.
191: v101 1/6/89 Fix problem with long (truncated) lines
192: in tags file (thanks to Neil Dixon).
193: v102 1/6/89 Fix bug with E# when no prev file;
194: allow spaces after -l command.
195: v103 3/14/89 Add -N, -f and -? options. Add z and w
196: commands. Add %L for prompt strings.
197: v104 3/16/89 Added EDITPROTO.
198: v105 3/20/89 Fix bug in find_linenum which cached
199: incorrectly on long lines.
200: v106 3/31/89 Added -k option and multiple lesskey
201: files.
202: v107 4/27/89 Add 8-bit char support and -g option.
203: Split option code into 3 files.
204: v108 5/5/89 Allocate position table dynamically
205: (thanks to Paul Eggert); change % command
206: from "percent" to vi-style brace finder.
207: v109 5/10/89 Added ESC-% command, split prim.c.
208: v110 5/24/89 Fixed bug in + option; fixed repaint bug
209: under Sun windows (thanks to Paul Eggert).
210: v111 5/25/89 Generalized # and % expansion; use
211: calloc for some error messages.
212: v112 5/30/89 Get rid of ESC-%, add {}()[] commands.
213: v113 5/31/89 Optimize lseeks (thanks to Paul Eggert).
214: v114 7/25/89 Added ESC-/ and ESC-/! commands.
215: v115 7/26/89 Added ESC-n command.
216: v116 7/31/89 Added find_pos to optimize g command.
217: v117 8/1/89 Change -f option to -r.
218: v118 8/2/89 Save positions for all previous files,
219: not just the immediately previous one.
220: v119 8/7/89 Save marks across file boundaries.
221: Add file handle stuff.
222: v120 8/11/89 Add :ta command.
223: v121 8/16/89 Add -f option.
224: v122 8/30/89 Fix performance with many buffers.
225: v123 8/31/89 Verbose prompts for string options.
226: Posted beta to USENET.
227: -----------------------------------------------------------------
228: v124 9/18/89 Reorganize search commands,
229: N = rev, ESC-n = span, add ESC-N.
230: v125 9/18/89 Fix tab bug (thanks to Alex Liu).
231: Fix EOF bug when both -w and -c.
232: v126 10/25/89 Add -j option.
233: v127 10/27/89 Fix problems with blank lines before BOF.
234: v128 10/27/89 Add %bj, etc. to prompt strings.
235: v129 11/3/89 Add -+,-- commands; add set-option and
236: unset-option to lesskey.
237: v130 11/6/89 Generalize A_EXTRA to string, remove
238: set-option, unset-option from lesskey.
239: v131 11/7/89 Changed name of EDITPROTO to LESSEDIT.
240: v132 11/8/89 Allow editing of command prefix.
241: v133 11/16/89 Add -y option (thanks to Jeff Sullivan).
242: v134 12/1/89 Glob filenames in the -l command.
243: v135 12/5/89 Combined {}()[] commands into one, and
244: added ESC-^F and ESC-^B commands.
245: v136 1/20/90 Added -S, -R flags. Added | command.
246: Added warning for binary files. (thanks
247: to Richard Brittain and J. Sullivan).
248: v137 1/21/90 Rewrote horrible pappend code.
249: Added * notation for hi-bit chars.
250: v138 1/24/90 Fix magic cookie terminal handling.
251: Get rid of "cleanup" loop in ch_get.
252: v139 1/27/90 Added MSDOS support. (many thanks
253: to Richard Brittain).
254: v140 2/7/90 Editing a new file adds it to the
255: command line list.
256: v141 2/8/90 Add edit_list for editing >1 file.
257: v142 2/10/90 Add :x command.
258: v143 2/11/90 Add * and @ modifies to search cmds.
259: Change ESC-/ cmd from /@* to / *.
260: v144 3/1/90 Messed around with ch_zero;
261: no real change.
262: v145 3/2/90 Added -R and -v/-V for MSDOS;
263: renamed FILENAME to avoid conflict.
264: v146 3/5/90 Pull cmdbuf functions out of command.c
265: v147 3/7/90 Implement ?@; fix multi-file edit bugs.
266: v148 3/29/90 Fixed bug in :e<file> then :e#.
267: v149 4/3/90 Change error,ierror,query to use PARG.
268: v150 4/6/90 Add LESS_CHARSET, LESS_CHARDEF.
269: v151 4/13/90 Remove -g option; clean up ispipe.
270: v152 4/14/90 lsystem() closes input file, for
271: editors which require exclusive open.
272: v153 4/18/90 Fix bug if SHELL unset;
273: fix bug in overstrike control char.
274: v154 4/25/90 Output to fd 2 via buffer.
275: v155 4/30/90 Ignore -i if uppercase in pattern
276: (thanks to Michael Rendell.)
277: v156 5/3/90 Remove scroll limits in forw() & back();
278: causes problems with -c.
279: v157 5/4/90 Forward search starts at next real line
280: (not screen line) after jump target.
281: v158 6/14/90 Added F command.
282: v159 7/29/90 Fix bug in exiting: output not flushed.
283: v160 7/29/90 Clear screen before initial output w/ -c.
284: v161 7/29/90 Add -T flag.
285: v162 8/14/90 Fix bug with +F on command line.
286: v163 8/21/90 Added LESSBINFMT variable.
287: v164 9/5/90 Added -p, LINES, COLUMNS and
288: unset mark ' == BOF, for 1003.2 D5.
289: v165 9/6/90 At EOF with -c set, don't display empty
290: screen when try to page forward.
291: v166 9/6/90 Fix G when final line in file wraps.
292: v167 9/11/90 Translate CR/LF -> LF for 1003.2.
293: v168 9/13/90 Return to curr file if "tag not found".
294: v169 12/12/90 G goes to EOF even if file has grown.
295: v170 1/17/91 Add optimization for BSD _setjmp;
296: fix #include ioctl.h TERMIO problem.
297: (thanks to Paul Eggert)
298: Posted to USENET.
299: -----------------------------------------------------------------
300: v171 3/6/91 Fix -? bug in get_filename.
301: v172 3/15/91 Fix G bug in empty file.
302: Fix bug with ?\n and -i and uppercase
303: pattern at EOF!
304: (thanks to Paul Eggert)
305: v173 3/17/91 Change N cmd to not permanently change
306: direction. (thanks to Brian Matthews)
307: v174 3/18/91 Fix bug with namelogfile not getting
308: cleared when change files.
309: v175 3/18/91 Fix bug with ++cmd on command line.
310: (thanks to Jim Meyering)
311: v176 4/2/91 Change | to not force current screen,
312: include marked line, start/end from
313: top of screen. Improve search speed.
314: (thanks to Don Mears)
315: v177 4/2/91 Add LESSHELP variable.
316: Fix bug with F command with -e.
317: Try /dev/tty for input before using fd 2.
318: Patches posted to USENET 4/2/91.
319: -----------------------------------------------------------------
320: v178 4/8/91 Fixed bug in globbing logfile name.
321: (thanks to Jim Meyering)
322: v179 4/9/91 Allow negative -z for screen-relative.
323: v180 4/9/91 Clear to eos rather than eol if "db";
324: don't use "sr" if "da".
325: (thanks to Tor Lillqvist)
326: v181 4/18/91 Fixed bug with "negative" chars 80 - FF.
327: (thanks to Benny Sander Hofmann)
328: v182 5/16/91 Fixed bug with attribute at EOL.
329: (thanks to Brian Matthews)
330: v183 6/1/91 Rewrite linstall to do smart config.
331: v184 7/11/91 Process \b in searches based on -u
332: rather than -i.
333: v185 7/11/91 -Pxxx sets short prompt; assume SIGWINCH
334: after a SIGSTOP. (thanks to Ken Laprade)
335: -----------------------------------------------------------------
336: v186 4/20/92 Port to MS-DOS (Microsoft C).
337: v187 4/23/92 Added -D option & TAB_COMPLETE_FILENAME.
338: v188 4/28/92 Added command line editing features.
339: v189 12/8/92 Fix mem overrun in anscreen.c:init;
340: fix edit_list to recover from bin file.
341: v190 2/13/93 Make TAB enter one filename at a time;
342: create ^L with old TAB functionality.
343: v191 3/10/93 Defer creating "flash" page for MS-DOS.
344: v192 9/6/93 Add BACK-TAB.
345: v193 9/17/93 Simplify binary_file handling.
346: v194 1/4/94 Add rudiments of alt_filename handling.
347: v195 1/11/94 Port back to Unix; support keypad.
348: -----------------------------------------------------------------
349: v196 6/7/94 Fix bug with bad filename; fix IFILE
350: type problem. (thanks to David MacKenzie)
351: v197 6/7/94 Fix bug with .less tables inserted wrong.
352: v198 6/23/94 Use autoconf installation technology.
353: (thanks to David MacKenzie)
354: v199 6/29/94 Fix MS-DOS build (thanks to Tim Wiegman).
355: v200 7/25/94 Clean up copyright, minor fixes.
356: Posted to prep.ai.mit.edu
357: -----------------------------------------------------------------
358: v201 7/27/94 Check for no memcpy; add casts to calloc;
359: look for regcmp in libgen.a.
360: (thanks to Kaveh Ghazi).
361: v202 7/28/94 Fix bug in edit_next/edit_prev with
362: non-existant files.
363: v203 8/2/94 Fix a variety of configuration bugs on
364: various systems. (thanks to Sakai
365: Kiyotaka, Harald Koenig, Bjorn Brox,
366: Teemu Rantanen, and Thorsten Lockert)
367: v204 8/3/94 Use strerror if available.
368: (thanks to J.T. Conklin)
369: v205 8/5/94 Fix bug in finding "me" termcap entry.
370: (thanks to Andreas Stolcke)
371: 8/10/94 v205+: Change BUFSIZ to LBUFSIZE to avoid name
372: conflict with stdio.h.
373: Posted to prep.ai.mit.edu
374: -----------------------------------------------------------------
375: v206 8/10/94 Use initial_scrpos for -t to avoid
376: displaying first page before init().
377: (thanks to Dominique Petitpierre)
378: v207 8/12/94 Fix bug if stdout is not tty.
379: v208 8/16/94 Fix bug in close_altfile if goto err1
380: in edit_ifile. (Thanks to M.J. Hewitt)
381: v209 8/16/94 Change scroll to wscroll to avoid
382: conflict with library function.
383: v210 8/16/94 Fix bug with bold on 8 bit chars.
384: (thanks to Vitor Duarte)
385: v211 8/16/94 Don't quit on EOI in jump_loc / forw.
386: v212 8/18/94 Use time_t if available.
387: v213 8/20/94 Allow ospeed to be defined in termcap.h.
388: v214 8/20/94 Added HILITE_SEARCH, -F, ESC-u cmd.
389: (thanks to Paul Lew and Bob Byrnes)
390: v215 8/23/94 Fix -i toggle behavior.
391: v216 8/23/94 Process BS in all searches, not only -u.
392: v217 8/24/94 Added -X flag.
393: v218 8/24/94 Reimplement undo_search.
394: v219 8/24/94 Find tags marked with line number
395: instead of pattern.
396: v220 8/24/94 Stay at same position after SIG_WINCH.
397: v221 8/24/94 Fix bug in file percentage in big file.
398: v222 8/25/94 Do better if can't reopen current file.
399: v223 8/27/94 Support setlocale.
400: (thanks to Robert Joop)
401: v224 8/29/94 Revert v216: process BS in search
402: only if -u.
403: v225 9/6/94 Rewrite undo_search again: toggle.
404: v226 9/15/94 Configuration fixes.
405: (thanks to David MacKenzie)
406: v227 9/19/94 Fixed strerror config problem.
407: Posted to prep.ai.mit.edu
408: -----------------------------------------------------------------
409: v228 9/21/94 Fix bug in signals: repeated calls to
410: get_editkeys overflowed st_edittable.
411: v229 9/21/94 Fix "Nothing to search" error if -a
412: and SRCH_PAST_EOF.
413: v230 9/21/94 Don't print extra error msg in search
414: after regerror().
415: v231 9/22/94 Fix hilite bug if search matches 0 chars.
416: (thanks to John Polstra)
417: v232 9/23/94 Deal with weird systems that have
418: termios.h but not tcgetattr().
419: Posted to prep.ai.mit.edu
420: -----------------------------------------------------------------
421: v233 9/26/94 Use get_term() instead of pos_init() in
422: psignals to re-get lower_left termcap.
423: (Thanks to John Malecki)
424: v234 9/26/94 Make MIDDLE closer to middle of screen.
425: v235 9/27/94 Use local strchr if system doesn't have.
426: v236 9/28/94 Don't use libucb; use libterm if
427: libtermcap & libcurses doesn't work.
428: (Fix for Solaris; thanks to Frank Kaefer)
429: v237 9/30/94 Use system isupper() etc if provided.
430: Posted to prep.ai.mit.edu
431: -----------------------------------------------------------------
432: v238 10/6/94 Make binary non-blinking if LESSBINFMT
433: is set to a string without a *.
434: v239 10/7/94 Don't let delimit_word run back past
435: beginning of cmdbuf.
436: v240 10/10/94 Don't write into termcap buffer.
437: (Thanks to Benoit Speckel)
438: v241 10/13/94 New lesskey file format.
439: Don't expand filenames in search command.
440: v242 10/14/94 Allow lesskey specification of "literal".
441: v243 10/14/94 Add #stop command to lesskey.
442: v244 10/16/94 Add -f flag to lesskey.
443: v245 10/25/94 Allow TAB_COMPLETE_FILENAME to be undefd.
444: v246 10/27/94 Move help file to /usr/local/share.
445: v247 10/27/94 Add -V option.
446: v248 11/5/94 Add -V option to lesskey.
447: v249 11/5/94 Remove -f flag from lesskey; default
448: input file is ~/.lesskey.in, not stdin.
449: v250 11/7/94 Lesskey input file "-" means stdin.
450: v251 11/9/94 Convert cfgetospeed result to ospeed.
451: (Thanks to Andrew Chernov)
452: v252 11/16/94 Change default lesskey input file from
453: .lesskey.in to .lesskey.
454: Posted to prep.ai.mit.edu
455: -----------------------------------------------------------------
456: v253 11/21/94 Fix bug when tags file has a backslash.
457: v254 12/6/94 Fix -k option.
458: v255 12/8/94 Add #define EXAMINE to disable :e etc.
459: v256 12/10/94 Change highlighting: only highlite search
460: results (but now it is reliable).
461: v257 12/10/94 Add goto_line and repaint_highlight
462: to optimize highlight repaints.
463: v258 12/12/94 Fixup in hilite_line if BS_SPECIAL.
464: v259 12/12/94 Convert to autoconf 2.0.
465: v260 12/13/94 Add SECURE define.
466: v261 12/14/94 Use system WERASE char as EC_W_BACKSPACE.
467: v262 12/16/94 Add -g/-G flag and screen_hilite.
468: v263 12/20/94 Reimplement/optimize -G flag behavior.
469: v264 12/23/94 Allow EXTRA string after line-edit cmd
470: in lesskey file.
471: v265 12/24/94 Add LESSOPEN=|cmd syntax.
472: v266 12/26/94 Add -I flag.
473: v267 12/28/94 Formalize the four-byte header emitted
474: by a LESSOPEN pipe.
475: v268 12/28/94 Get rid of four-byte header.
476: v269 1/2/95 Close alt file before open new one.
477: Avoids multiple popen().
478: v270 1/3/95 Use VISUAL; use S_ISDIR/S_ISREG; fix
479: config problem with Solaris POSIX regcomp.
480: v271 1/4/95 Don't quit on read error.
481: v272 1/5/95 Get rid of -L.
482: v273 1/6/95 Fix ch_ungetchar bug; don't call
483: LESSOPEN on a pipe.
484: v274 1/6/95 Ported to OS/2 (thanks to Kai Uwe Rommel)
485: v275 1/18/95 Fix bug if toggle -G at EOF.
486: v276 1/30/95 Fix OS/2 version.
487: v277 1/31/95 Add "next" charset; don't display ^X
488: for X > 128.
489: v278 2/14/95 Change default for -G.
490: Posted to prep.ai.mit.edu
491: -----------------------------------------------------------------
492: v279 2/22/95 Add GNU options --help, --version.
493: Minor config fixes.
494: v280 2/24/95 Clean up calls to glob(); don't set #
495: if we can't open the new file.
496: v281 2/24/95 Repeat search should turn on hilites.
497: v282 3/2/95 Minor fixes.
498: v283 3/2/95 Fix homefile; make OS2 look in $HOME.
499: v284 3/2/95 Error if "v" on LESSOPENed file;
500: "%" figures out file size on pipe.
501: v285 3/7/95 Don't set # in lsystem;
502: lesskey try $HOME first.
503: v286 3/7/95 Reformat change history (too much free time?).
504: v287 3/8/95 Fix hilite bug if overstrike multiple chars.
505: v288 3/8/95 Allow lesskey to override get_editkey keys.
506: v289 3/9/95 Fix adj_hilite bug when line gets processed by
507: hilite_line more than once.
508: v290 3/9/95 Make configure automatically. Fix Sequent problem
509: with incompatible sigsetmask().
510:
511: */
512:
513: char version[] = "290";
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