+1.42 -> 1.43 Sat Dec 3 13:11:32 1994
+ + Marks, SunOS signed comparison fix for 1.42.
+1.41 -> 1.42 Fri Dec 2 20:08:16 1994
+ + Make autowrite require the file not be read-only.
+ + Make the ex insert command work in empty files.
+ + Tab expansion is no longer limited to values < 20 (which matches
+ historical practice).
+ + Simplify (and fix limit detection for) the # command. It's no
+ longer possible to use the # command itself to repeat or modify
+ a previous # command, '.' is the only possibility.
+ + Lots more reworking of the ex addresses, putting ? and / into
+ the ex addressing code broke the world.
+ + Make the Put, Preserve and Print commands work (don't ask).
+ + Split stdout/stderr from shell expansions; stdout is expansion
+ text, stderr is entered on the message queue.
+1.40 -> 1.41 Fri Nov 18 16:13:52 1994
+ + Addition of a port for AUX 3.1
+ + Addition of a message catalog for Russian.
+ + Make vi ? and / commands be true ex addresses (historic practice).
+ + Display the date first in vi -r recovery list.
+1.39 -> 1.40 Mon Nov 14 10:46:56 1994
+ + Two bug fixes for 1.39; -r option and v_change core dump.
+1.38 -> 1.39 Sun Nov 13 18:04:08 1994
+ + Ex substitution with confirmation now matches historic practice
+ (except that it still runs in raw mode, not cooked).
+ + Nvi now clears the screen before painting, if repainting the
+ entire screen.
+ + Fix final cursor position for put command entering text in a
+ single line.
+ + Change to break error message lines on the last <blank> in the
+ line.
+ + Always center the current line when returning to a previously
+ edited file or moving to a tag line that's not visible on the
+ screen.
+ + Change write of the current file using an explicit name or % to
+ match the semantics of :w<CR>, not :w file<CR>.
+ + Add command aliases to vi, and remap 6 historic commands to their
+ historic counterparts: D->d$, Y->y_, S->c_, C->c$, A->$a, I->^i.
+ + Match option display to historic practice; if boolean or numeric
+ options changed to default values, not displayed by default.
+ Nvi treats string options the same way, vi always displayed any
+ string option that was changed.
+ + Added lock edit option, if not set, no file locking is done.
+ + Rework ex to permit any ex command in the EXINIT variable or
+ exrc startup files. This fixes the bug were `vi +100 file'
+ painted the screen and then moved to line 100 and repainted.
+ (Yanked to SCCS ID 9.1.)
+ + Bug fix: could report file modified more recently than it was
+ written, incorrectly.
+ + Search fix: historically, motions with deltas were not corrected
+ to the previous/next line based on the starting/stopping column.
+ + Addressing fixes: make trailing non-existent addresses work, change
+ % to be text substitution, not a unique address (to follow future
+ POSIX).
+1.37 -> 1.38 Mon Oct 24 12:51:58 1994
+ + Scrolling fix; ^B can move to nonexistent lines.
+ + Fix to vi mapped commands; <escape> characters while already in
+ command mode did not historically cause the mapped characters to
+ be flushed.
+ + Add the backup edit option, automatically version edit files.
+ + Make it possible to edit files that db can't read, i.e. edit a
+ temporary file, with the correct file name.
+ + Only anchor the last line of the file to the bottom line of the
+ screen if there's half or less of a screen between the target
+ line and the end of the file.
+ + Fix wrapmargin text allocation bug.
+ + Fix ex put command to work in any empty file.
+ + Fix global command to handle move's to line 0 correctly.
+ + Regularize the yank cursor motions, several bug fixes for historic
+ practice.
+ + Fix N and n, when used as a motion command for the ! command,
+ repeat the last bang command instead of prompting for a new
+ one.
+ + Timeout maps beginning with <escape> quickly, instead of based
+ on the keytime option.
+ + Bug fix for wraplen option, wasn't triggered for input commands.
+1.36 -> 1.37 Sun Oct 9 19:02:53 1994
+ + Change PORT directories to install patches before distribution.
+ + Fix ^A to set search direction and pattern for consistency.
+ + Fold the showdirty option into the showmode option.
+ + Ex addressing fix: change search offset and line arguments (e.g.
+ the copy command) to be ex addressing offsets, matching historic
+ practice.
+ + Ex addressing fix: support ^ as an offset/flag equivalent to -.
+ + Ex addressing fix: historically, any missing address defaulted to
+ dot, e.g. "4,,," was the same as ".,.".
+ + Ex addressing fix: historically, <blank> separated numbers were
+ additive, e.g. "3 5p" displayed line 8.
+ + Ex addressing fix: make ';' as a range delimiter match historic
+ practice.
+ + Change nvi to exit immediately if stdout isn't a terminal.
+ + Change alternate file name behavior to match historic practice,
+ make the :write command set the current file name.
+ + Text input fix; input keys from a map, with an associated count,
+ weren't historically affected by the wrapmargin value.
+ + Add wraplen option, same as wrapmargin, but from the left-hand
+ column, not the right.
+ + Make ex address .<number> be equivalent to .+<number>, i.e. the
+ '+' is understood; matches historic practice, and it's widely
+ documented for ed(1).
+ + Input mode ^V^J historically mapped into a single ^J.
+ + Minor catalog changes, fixes; don't use 's' to pluralize words.
+1.35 -> 1.36 Thu Sep 8 08:40:25 1994
+ + Don't overwrite user's maps with standard (termcap) mappings.
+ + Make \ escape kill and erase characters in vi text input mode.
+ + Fix ^D autoindent bug by resolving leading <blank>s at ^D.
+ + Rework abbreviation tests (again!) to match historic practice.
+ + Change ^D/^U default scrolling value to be based on window option
+ value, not screen lines, correct scrolling option value, both to
+ match historic practice. NOTE: System V does this differently!
+1.34 -> 1.35 Wed Aug 31 19:20:15 1994
+ + Add the historic -l option.
+ + Message catalogs.
+ + Display global messages at each flush, just in case some are there.
+ + Fix global substitute code, `\\' wasn't handled correctly.
+ + Fix abbreviation code to use <blank>s as the preceding character.
+ + Fix ruler to display logical column, not physical column.
+ + Block signals when user issues :preserve command, so no race caused
+ by SIGHUP/SIGTERM.
+1.33 -> 1.34 Wed Aug 17 14:37:32 1994 (PUBLICLY AVAILABLE VERSION)
+ + Back out sccsid string fix, it won't work on SunOS 4.1.
+1.32 -> 1.33 Wed Aug 17 09:31:41 1994 (PUBLICLY AVAILABLE VERSION)
+ + Get back 5K of data space for the sccsid strings.
+ + Fix bug where cG fix in version 1.31 broke cw cursor positioning
+ when the change command extended the line.
+ + Fix core dump in map/seq code if character larger than 7 bits.
+ + Block signals when manipulating the SCR chains.
+ + Fix memory allocation for machines with multiple pointer sizes.
+1.31 -> 1.32 Mon Aug 15 14:27:49 1994
+ + Turn off recno mmap call for Solaris 2.4/SunOS 5.4.
+1.30 -> 1.31 Sun Aug 14 13:13:35 1994
+ + Fix bug were cG on the last line of a file wasn't done in line mode,
+ and where the cursor wasn't positioned correctly after exiting text
+ insert mode.
+ + Add termcap workaround to make function keys greater than 9 work
+ correctly (or fail if old-style termcap support).
+ + Change ex/vi to not flush mapped keys on error -- this is historic
+ practice, and people depended on it.
+ + Rework vi parser so that no command including a mapped key ever
+ becomes the '.' command, matching historic practice.
+ + Make <escape> cancellation in the vi parser match POSIX 1003.2.
+ + Fix curses bug where standout string was written for each standout
+ character, and where standout mode was never exited explicitly.
+ Fix bugs in curses SF/sf and SR/sr scrolling, as seen on Sun and
+ x86 consoles.
+ + The v/global commands execute the print command by default.
+ + The number option historically applies to ex as well as vi.
+1.29 -> 1.30 Mon Aug 8 10:30:42 1994
+ + Make first read into a temporary set the file's name.
+ + Permit any key to continue scrolling or ex commands -- this
+ allows stacked colon commands, and matches historic practice.
+ + Don't output normal ! command commentary in ex silent mode.
+ + Allow +/- flags after substitute commands, make line (flag)
+ offsets from vi mode match historic practice.
+ + Return <eof> to ex immediately, even if preceded by spaces. Rework
+ ex parser to do erase the prompt instead of depending on the print
+ routines to do it. Minor fixes to the ex parser for display of
+ default and scrolling commands. MORE EX PARSER CHANGES.
+1.28 -> 1.29 Fri Aug 5 10:18:07 1994
+ + Make the abbreviated ex delete command work (:dele---###lll for
+ example, is historically legal.
+ + When autoprint fires, multiple flags may be set, use ex_print
+ directly instead of the stub routines.
+ + Change v/global commands to turn off autoprint while running.
+ + Minor changes to make the ! command display match historic output.
+ + Rework the ex parser to permit multiple command separators without
+ commands -- MAJOR CHANGE, likely to introduce all sorts of new bugs.
+ + Fix cd command to expand argument in the context of each element
+ of the cdpath option, make relative paths always relative to the
+ current directory.
+ + Rework write/quit cases for temporary files, so that user's don't
+ discard them accidentally.
+ + Check for window size changes when continuing after a suspend.
+ + Fix memory problem in svi_screen, used free'd memory.
+ + Change the ex change, insert, append commands to match historic
+ cursor positions if no data entered by the user.
+ + Change ex format flags (#, l, p) to affect future commands, not
+ just the current one, to match historic practice.
+ + Make the user's EOF character an additional scroll character in ex.
+ + Fix ex ^D scrolling to be the value of the scroll option, not half
+ the screen.
+ + Fix buffer execution to match historic practice -- bugs where the
+ '*' command didn't work, and @<carriage-return> didn't work.
+ + Fix doubled reporting of deleted lines in filters.
+ + Rework the % ` / ? ( ) N n { and ^A commands to always cut into
+ numeric buffers regardless of the location or length of the cut.
+ This matches historic practice.
+ + Fix the { command to check the current line if the cursor doesn't
+ start on the first character of the line.
+ + Do '!' expansion in the ex read command arguments, it's historic
+ practice. In addition, it sets the last '!' command.
+1.27 -> 1.28 Wed Jul 27 21:29:18 1994
+ + Add support for scrolling using the CS and SF/sf/SR/sr termcap
+ strings to the 4BSD curses.
+ + Rework of getkey() introduced a bug where command interrupt put
+ nvi into an infinite loop.
+ + Piping through a filter historically cut the replaced lines into
+ the default buffer, although not the numeric ones.
+ + Read of a filter and !! historically moved to the first nonblank
+ of the resulting cursor line (most of the time).
+ + Rework cursor motion flags, to support '!' as a motion command.
+1.26 -> 1.27 Tue Jul 26 10:27:58 1994
+ + Add the meta option, to specify characters the shell will expand.
+ + Fix the read command to match historic practice, the white space
+ and bang characters weren't getting parsed correctly.
+ + Change SIGALRM handler to save and restore errno.
+ + Change SunOS include/compat.h to include <vfork.h> so that the
+ ex/filter.c code works again.
+ + Don't put lines deleted by the ex delete command into the numeric
+ buffers, matching historic practice.
+ + Fix; if appending to a buffer, default buffer historically only
+ references the appended text, not the resulting text.
+ + Support multiple, semi-colon separated search strings, and 'z'
+ commands after search strings.
+ + Make previous context mark setting match historic practice (see
+ docs/internals/context).
+ + Fix the set command to permit whitespace between the option and
+ the question mark, fix question marks in general.
+ + Fix bug where ex error messages could be accidentally preceded
+ by a single space.
+ + Fix bug where curses reorganization could lose screen specific
+ mappings as soon as any screen exited.
+ + Fix bug in paragraph code where invalid macros could be matched.
+ Make paragraph motions stop at formfeed (^L) characters.
+ + Change 'c' to match historic practice, it cut text into numeric
+ buffers.
+1.25 -> 1.26 Tue Jul 19 17:46:24 1994
+ + Ignore SIGWINCH if the screen size is unchanged; SunOS systems
+ deliver one when a screen is uncovered.
+ + Fix: don't permit a command with a motion component to wrap due
+ to wrapscan and return to the original cursor position.
+ + Fix: ^E wasn't beeping when reaching the bottom of the file.
+ + Fix bg/fg bug where tmp file exiting caused a NULL dereference.
+ + Rework file locking code to use fcntl(2) explicitly.
+ + Fix bug in section code where invalid macros could be matched.
+ + Fix bug where line number reset by vi's Q command.
+ + Add explicit character mode designation to character mode buffers.
+ + Add <sys/ioctl.h> include to sex/sex_window.c, needed by NET/2
+ vintage systems.
+ + Change to always flush a character during suspend, 4BSD curses
+ has the optimization where it doesn't flush after a standend().
+ + Fix bug on OSF1 where <curses.h> changes the values of VERASE,
+ VKILL and VWERASE to incorrect ones.
+ + Fix bug where optarg used incorrectly in main.c.
+ + Block all signals when acting on a signal delivery.
+ + Fix recovery bug where RCV_EMAIL could fire even if there wasn't
+ a backing file; format recovery message.
+1.24 -> 1.25 Sun Jul 17 14:33:38 1994
+ + Stop allowing keyboard suspends (^Z) in insert mode, it's hard
+ to get autowrite correct, and it's not historic practice.
+ + Fix z^, z+ to match historic practice.
+ + Bug in message handling, "vi +35 non-existent_file" lost the
+ status message because the "+35" pushed onto the stack erased
+ it. For now, change so that messages aren't displayed if there
+ are keys waiting -- may need to add a "don't-erase" bit to the
+ character in the stack instead.
+ + Bug in svi_msgflush(), where error messages could come out in
+ normal video.
+1.23 -> 1.24 Sat Jul 16 18:30:18 1994
+ + Fix core dump in exf.c, where editing a non-existent file and
+ exiting could cause already free'd memory to be free'd.
+ + Clean up numerous memory errors, courtesy of Purify.
+ + Change process wait code to fail if wait fails, and not attempt
+ to interpret the wait return information.
+ + Open recovery and DB files for writing as well as reading, System
+ V (fcntl) won't let you acquire LOCK_EX locks otherwise.
+ + Fix substitute bug where could malloc 0 bytes (AIX breaks).
+ + Permit the mapping of <carriage-return>, it's historic practice.
+ + Historic vi didn't eat <blank> characters before the force
+ flag, match historic practice.
+ + Bug in ex argument parsing, corrected for literal characters
+ twice.
+ + Delete screen specific maps when the screen closes.
+ + Move to the first non-<blank> in the line on startup; historic
+ practice.
+ + Change the ex visual command to move directly to a line if no
+ trailing 'z' command.
+ + Fix "[[" and "]]" to match historic practice (yet again...).
+ + Fix "yb" and "y{" commands to update the cursor correctly.
+ + Change "~<motion>" to match the yank cursor movement semantics
+ exactly.
+ + Move all of the curses related code into sex/svi -- major rework,
+ but should help in future ports.
+ + Fix bug in split code caused by new file naming code, where would
+ drop core when a split screen exited.
+ + Change svi_ex_write to do character display translation, so that
+ messages with file names in them are displayed correctly.
+ + Display the file name on split screens instead of a divider line.
+ + Fix move bug, wasn't copying lines before putting them.
+ + Fix bug were :n dropped core if no arguments supplied.
+ + Don't quote characters in executed buffer: "ifoo<esc>" should leave
+ insert mode after the buffer is executed.
+ + Tagpop and tagpush should set the absolute mark in case only moving
+ within a file.
+ + Skip leading whitespace characters before tags and cursor word
+ searches.
+ + Fix bug in ex_global where re_conv() was allocating the temporary
+ buffer and not freeing it.
+1.22 -> 1.23: Wed Jun 29 19:22:33 1994
+ + New <sys/cdefs.h> required "inline" to change to "__inline"
+ + Fix System V curses code for new ^Z support.
+ + Fix off-by-one in the move code, avoid ":1,$mo$" with only one
+ line in the buffer.
+ + Line orientation of motion commands was remembered too long,
+ i.e. '.' command could be incorrectly marked as line oriented.
+ + Move file modification time into EXF, so it's shared across
+ split screens.
+ + Put the prev[ious] command back in, people complained.
+ + Random fixes to next/prev semantics changed in 1.22.
+ + Historically vi doesn't only move to the last address if there's
+ ANYTHING after the addresses, e.g. ":3" moves to line 3, ":3|"
+ prints line 3.
+1.21 -> 1.22: Mon Jun 27 11:01:41 1994
+ + Make the line between split screens inverse video again.
+ + Delete the prev[ious] command, it's not useful enough to keep.
+ + Rework :args/file name handling from scratch -- MAJOR CHANGE,
+ likely to introduce all sorts of new bugs.
+ + Fix RE bug where no subexpressions in the pattern but there were
+ subexpressions referenced in the replacement, e.g. "s/XXX/\1/g".
+ + Change recovery to not leave unmodified files around after a
+ crash, by using the owner 'x' bit on unmodified backup files.
+ MAJOR CHANGE, the system recovery script has to change!
+ + Change -r option to delete recovery.* files that reference non-
+ existent vi.* files.
+ + Rework recovery locking so that fcntl(2) locking will work.
+ + Fix append (upper-case) buffers, broken by cut fixes.
+ + Fix | to not set the absolute motion mark.
+ + Read $HOME/.exrc file on startup if the effective user ID is
+ root. This makes running vi while su(1)'d work correctly.
+ + Use the full pathname of the file as the recovery name, not
+ just the last component. Matches historic practice.
+ + Keep marks in empty files from being destroyed.
+ + Block all caught signals before calling the DB routines.
+ + Make the line change report match historic practice (yanked
+ lines were different than everything else).
+ + Add section on multiple screens to the reference manual.
+ + Display all messages at once, combine onto a single line if
+ possible. Delete the trailing period from all messages.
+1.20 -> 1.21: Thu May 19 12:21:58 1994
+ + Delete the -l flag from the recover mail.
+ + Send the user email if ex command :preserve executed, this matches
+ historic practice. Lots of changes to the preserve and recovery
+ code, change preserve to snapshot files (again, historic practice).
+ + Make buffers match historic practice: "add logically stores text
+ into buffer a, buffer 1, and the unnamed buffer.
+ + Print <tab> characters as ^I on the colon command line if the
+ list option set.
+ + Adjust ^F and ^B scroll values in the presence of split screens
+ and small windows.
+ + Break msg* routines out from util.c into msg.c, start thinking
+ about message catalogs.
+ + Add tildeop set option, based on stevie's option of the same name.
+ Changes the ~ command into "[count] ~ motion", i.e. ~ takes a
+ trailing motion.
+ + Chose NOT to match historic practice on cursor positioning after
+ consecutive undo commands on a single line; see vi/v_undo.c for
+ the comment.
+ + Add a one line cache so that multiple changes to the same line
+ are only counted once (e.g. "dl35p" changes one line, not 35).
+ + Rework signals some more. Block file sync signals in vi routines
+ that interface to DB, so can sync the files at interrupt time.
+ Write up all of the signal handling arguments, see signal.c.
+1.19 -> 1.20: Thu May 5 19:24:57 1994
+ + Return ^Z to synchronous handling. See the dicussion in signal.c
+ and svi_screen.c:svi_curses_init().
+ + Fix bug where line change report was wrong in util.c:msg_rpt().
+1.18 -> 1.19: Thu May 5 12:59:51 1994
+ + Block DSUSP so that ^Y isn't delivered at SIGTSTP.
+ + Fix bug -- put into an empty file leaves the cursor at 1,0,
+ not the first nonblank.
+ + Fix bug were number of lines reported for the 'P' command was
+ off-by-one.
+ + Fix bug were 0^D wasn't being handled correctly.
+ + Delete remnants of ^Z as a raw character.
+ + Fix bug where if a map was an entire colon command, it may never
+ have been displayed.
+ + Final cursor position fixes for the vi T and t commands.
+ + The ex :next command took an optional ex command as it's first
+ argument similar to the :edit commands. Match historic practice.
+1.17 -> 1.18: Wed May 4 13:57:10 1994
+ + Rework curses information in the PORT/Makefile's.
+ + Minor fixes to ^Z asynchronous code.
+1.16 -> 1.17: Wed May 4 11:15:56 1994
+ + Make ex comment handling match historic practice.
+ + Make ^Z work asynchronously, we can no longer use the SIGTSTP
+ handler in the curses library.
+1.15 -> 1.16: Mon May 2 19:42:07 1994
+ + Make the 'p' and 'P' commands support counts, i.e. "Y10p" works.
+ + Make characters that map to themselves as the first part of the
+ mapping work, it's historic practice.
+ + Fix bug where "s/./\& /" discarded the space in the replacement
+ string.
+ + Add support for up/down cursor arrows in text input mode, rework
+ left/right support to match industry practice.
+ + Fix bug were enough character remapping could corrupt memory.
+ + Delete O_REMAPMAX in favor of setting interrupts after N mapped
+ characters without a read, delete the map counter per character.
+ MAJOR CHANGE. All of the interrupt signal handling has been
+ reworked so that interrupts are always turned on instead of
+ being turned on periodically, when an interruptible operation is
+ pending.
+ + Fix bug where vi wait() was interrupted by the recovery alarm.
+ + Make +cmd's and initial commands execute with the current line
+ set to the last line of the file. This is historic practice.
+ + Change "lock failed" error message to a file status message.
+ It always fails over NFS, and making all NFS files readonly
+ isn't going to fly.
+ + Use the historic line number format, but check for overflow.
+ + Fix bug where vi command parser ignored buffers specified as
+ part of the motion command.
+ + Make [@*]buffer commands on character mode buffers match historic
+ practice.
+ + Fix bug where the cmap/chf entries of the tty structure weren't
+ being cleared when new characters were read.
+ + Fix bug where the default command motion flags were being set
+ when the command was a motion component.
+ + Fix wrapmargin bug; if appending characters, and wrapmargin breaks
+ the line, an additional space is eaten.
+1.14 -> 1.15: Fri Apr 29 07:44:57 1994
+ + Make the ex delete command work in any empty file.
+ + Fix bug where 't' command placed the cursor on the character
+ instead of to its left.
+ + ^D and ^U didn't set the scroll option value historically.
+ Note, this change means that any user set value (e.g. 15^D)
+ will be lost when splitting the screen, since the split code
+ now resets the scroll value regardless.
+ + Fix the ( command to set the absolute movement mark.
+ + Only use TIOCGWINSZ for window information if SIGWINCH signal
+ caught.
+ + Delete the -l flag, and make -r work for multiple arguments.
+ Add the ex "recover[!] file" command.
+ + Switch into ex terminal mode and use the sex routines when
+ append/change/insert called from vi mode.
+ + Make ^F and ^B match historic practice. This required a fairly
+ extensive rework of the svi scrolling code.
+ + Cursor positioning in H, M, L, G (first non-blank for 1G) wasn't
+ being done correctly. Delete the SETLFNB flag. H, M, and L stay
+ logical movements (SETNNB) and G always moves to the first nonblank.
+ + System V uses "lines" and "cols", not "li" and "co", change as
+ necessary. Check termcap function returns for errors.
+ + Fix `<character> command to do start/end of line correction,
+ and to set line mode if starting and stopping at column 0.
+ + Fix bug in delete code where dropped core if deleted in character
+ mode to an empty line. (Rework the delete code for efficiency.)
+ + Give up on SunOS 4.1.X, and use "cc" instead of /usr/5bin/cc.
+ + Protect ex_getline routine from interrupted system calls (if
+ possible, set SA_RESTART on SIGALRM, too).
+ + Fix leftright scrolling bug, when moving to a shorter line.
+ + Do validity checking on the copy, move, t command target line
+ numbers.
+ + Change for System V % pattern broke trailing flags for empty
+ replacement strings.
+ + Fix bug when RCM flags retained in the saved dot structure.
+ + Make the ex '=' command work for empty files.
+ + Fix bug where special_key array was being free'd (it's no longer
+ allocated).
+ + Matches cut in line mode only if the starting cursor is at or
+ before the first nonblank in its line, and the ending cursor is
+ at or after the last nonblank in its line.
+ + Add the :wn command, so you can write a file and switch to a new
+ file in one command.
+ + Allow only a single key as an argument to :viusage.
+ + New movement code broke filter/paragraph operations in empty
+ files ("!}date" in an empty file was dropping core).
+1.12 -> 1.14: Mon Apr 18 11:05:10 1994 (PUBLICLY AVAILABLE VERSION, 4.4BSD)
+ + Fix FILE structure leakage in the ex filter code.
+ + Rework suspend code for System V curses. Nvi has to do the
+ the work, there's no way to get curses to do it right.
+ + Revert SunOS 4.1.X ports to the distributed curses. There's
+ a bug in Sun's implementation that we can't live with.
+ + Quit immediately if row/column values are unreasonable.
+ + Fix the function keys to match vi historic behavior.
+ + Replace the echo/awk magic in the Makefile's with awk scripts.
+1.11 -> 1.12: Thu Apr 14 11:10:19 1994
+ + Fix bug where only the first vi key was checked for validity.
+ + Make 'R' continue to overwrite after a <carriage-return>.
+ + Only display the "no recovery" message once.
+ + Rework line backup code to restore the line to its previous
+ condition.
+ + Don't permit :q in a .exrc file or EXINIT variable.
+ + Fix wrapscan option bug where forward searches become backward
+ searches and do cursor correction accordingly.
+ + Change "dd" to move the cursor to the first non-blank on the line.
+ + Delete cursor attraction to the first non-blank, change non-blank
+ motions to set the most attractive cursor position instead.
+ + Fix 'r' substitute option to set the RE to the last RE, not the
+ last substitute RE.
+ + Fix 'c' and 'g' substitute options to always toggle, and fix
+ edcompatible option to not reset them.
+ + Display ex error messages in inverse video.
+ + Fix errorbells option to match historic practice.
+ + Delete fixed character display table in favor of table built based
+ on the current locale.
+ + Add ":set octal" option, that displays unknown characters as octal
+ values instead of the default hexadecimal.
+ + Make all command and text input modes interruptible.
+ + Fix ex input mode to display error messages immediately, instead
+ of waiting for the lines to be resolved.
+ + Fix bug where vi calling append could overwrite the command.
+ + Fix off-by-one in the ex print routine tab code.
+ + Fix incorrect ^D test in vi text input routines.
+ + Add autoindent support for ex text insert routines.
+ + Add System V substitute command replacement pattern semantics,
+ where '%' means the last replacement pattern.
+ + Fix bug that \ didn't escape newlines in ex commands.
+ + Regularize the names of special characters to CH_*.
+ + Change hex insert character from ^Vx<hex_char> to ^X<hex_char>
+ + Integrate System V style curses, so SunOS and Solaris ports can
+ use the native curses implementation.
+1.10 -> 1.11: Thu Mar 24 16:07:45 EST 1994 (PUBLICLY AVAILABLE VERSION)
+ + Change H, M, and L to set the absolute mark, historical practice.
+ + Fix bug in stepping through multiple tags files.
+ + Add "remapmax" option that turns off map counts so you can remap
+ infinitely. If it's off, term_key() can be interrupted from the
+ keyboard, which will cause the buffers to flush. I also dropped
+ the default max number of remaps to 50. (Only Dave Hitz's TM
+ macros and maze appear to go over that limit.)
+ + Change :mkexrc to not dump w{300,1200,9600}, lisp options.
+ + Fix backward search within a line bug.
+ + Change all the includes of "pathnames.h" to use <>'s so that the
+ PORT versions can use -I. to replace it with their own versions.
+ + Make reads and writes interruptible. Rework code that enters and
+ leaves ex for '!' and filter commands, rework all interrupt and
+ timer code.
+ + Fix core dump when user displayed option in .exrc file.
+ + Fix bug where writing empty files didn't update the saved
+ modification time.
+ + Fix bug where /pattern/ addressing was always a backward search.
+ + Fix bug triggered by autoindent of more than 32 characters, where
+ nvi wasn't checking the right TEXT length.
+ + Fix bug where joining only empty lines caused a core dump.
+1.09 -> 1.10: Sat Mar 19 15:40:29 EST 1994
+ + Fix "set all" core dump.
+1.08 -> 1.09: Sat Mar 19 10:11:14 EST 1994
+ + If the tag's file path is relative, and it doesn't exist, check
+ relative to the tag file location.
+ + Fix ~ command to free temporary buffer on error return.
+ + Create vi.ref, a first cut at a reference document for vi.
+ The manual page and the reference document only document the
+ set options, so far.
+ + Fix 1G bug not always going to the first non-blank.
+ + Upgrade PORT/regex to release alpha3.4, from Henry Spencer.
+ + Add MKS vi's "cdpath" option, supporting a cd search path.
+ + Handle if search as a motion was discarded, i.e. "d/<erase>".
+ + Change nvi to not create multiple recovery files if modifying
+ a recovered file.
+ + Decide to ignore that the cursor is before the '$' when inserting
+ in list mode. It's too hard to fix.
+1.07 -> 1.08: Wed Mar 16 07:37:36 EST 1994
+ + Leftright and big line scrolling fixes. This meant more changes
+ to the screen display code, so there may be new problems.
+ + Don't permit search-style addresses until a file has been read.
+ + "c[Ww]" command incorrectly handled the "in whitespace" case.
+ + Fix key space allocation bug triggered by cut/paste under SunOS.
+ + Ex move command got the final cursor position wrong.
+ + Delete "optimize option not implemented" message.
+ + Make the literal-next character turn off mapping for the next
+ character in text input mode.
+1.06 -> 1.07: Mon Mar 14 11:10:33 EST 1994
+ + The "wire down" change in 1.05 broke ex command parsing, there
+ wasn't a corresponding change to handle multiple K_VLNEXT chars.
+ + Fix final position for vi's 't' command.
+1.05 -> 1.06: Sun Mar 13 16:12:52 EST 1994
+ + Wire down ^D, ^H, ^W, and ^V, regardless of the user's termios
+ values.
+ + Add ^D as the ex scroll command.
+ + Support ^Q as a literal-next character.
+ + Rework abbreviations to be delimited by any !inword() character.
+ + Add options description to the manual page.
+ + Minor screen cache fix for svi_get.c.
+ + Rework beautify option support to match historical practice.
+ + Exit immediately if not reading from a tty and a command fails.
+ + Default the SunOS 4.* ports to the distributed curses, not SMI's.
+1.04 -> 1.05: Thu Mar 24 16:07:45 EST 1994
+ + Make cursor keys work in input mode.
+ + Rework screen column code in vi curses screen. MAJOR CHANGE --
+ after this, we'll be debugging curses screen presentation from
+ scratch.
+ + Explode include files in vi.h into the source files.
+1.03 -> 1.04: Sun Mar 6 14:14:16 EST 1994
+ + Make the ex move command keep the marks on the moved lines.
+ + Change resize semantics so you can set the screen size to a
+ specific value. A couple of screen fixes for the resize code.
+ + Fixes for foreground/background due to SIGWINCH.
+ + Complete rework of all of vi's cursor movements. The underlying
+ assumption in the old code was that the starting cursor position
+ was part of the range of lines cut or deleted. The command
+ "d[[" is an example where this isn't true. Change it so that all
+ motion component commands set the final cursor position separately
+ from the range, as it can't be done correctly later. This is a
+ MAJOR CHANGE -- after this change, we'll be debugging the cursor
+ positioning from scratch.
+ + Rewrite the B, b, E, e commands to use vi's getc() interface
+ instead of rolling their own.
+ + Add a second MARK structure, LMARK, which is the larger mark
+ needed by the logging and mark queue code. Everything else uses
+ the reworked MARK structure, which is simply a line/column pair.
+ + Rework cut/delete to not expect 1-past-the-end in the range, but
+ to act on text to the end of the range, inclusive.
+ + Sync on write's, to force NFS to flush.
+1.01 -> 1.03: Sun Jan 23 17:50:35 EST 1994 (PUBLICLY AVAILABLE VERSION)
+ + Tag stack fixes, was returning to the tag, not the position from
+ which the user tagged.
+ + Only use from the cursor to the end of the word in cursor word
+ searches and tags. (Matches historical vi behavior.)
+ + Fix delete-last-line bug when line number option set.
+ + Fix usage line for :split command.
+ + If O_NUMBER set, long input lines would eventually fail, the column
+ count for the second screen of long lines wasn't set correctly.
+ + Fix for [[ reaching SOF with a column longer than the first line.
+ + Fix for multiple error messages if no screen displayed.
+ + Fix :read to set alternate file name as in historical practice.
+ + Fix cut to rotate the numeric buffers if line mode flag set.
+1.00 -> 1.01: Wed Jan 12 13:37:18 EST 1994
+ + Don't put cut items into numeric buffers if cutting less than
+ parts of two lines.
+0.94 -> 1.00: Mon Jan 10 02:27:27 EST 1994
+ + Read-ahead not there; BSD tty driver problem, SunOS curses
+ problem.
+ + Global command could error if it deleted the last line of
+ the file.
+ + Change '.' to only apply to the 'u' if entered immediately
+ after the 'u' command. "1pu.u.u. is still broken, but I
+ expect that it's going to be sacrificed for multiple undo.
+ + If backward motion on a command, now move to the point; get
+ yank cursor positioning correct.
+ + Rework cut buffers to match historic practice -- yank/delete
+ numeric buffers redone sensibly, ignoring historic practice.
+0.92 -> 0.93: Mon Dec 20 19:52:14 EST 1993
+ + Christos Zoulas reimplemented the script windows using pty's,
+ which means that they now work reasonably. The down side of
+ this is that almost all ports other than 4.4BSD need to include
+ two new files, login_tty.c and pty.c from the PORT/clib directory.
+ I've added them to the Makefiles.
+ + All calloc/malloc/realloc functions now cast their pointers, for
+ SunOS -- there should be far fewer warning messages, during the
+ build. The remaining messages are where CHAR_T's meet char *'s,
+ i.e. where 8-bit clean meets strcmp.
+ + The user's argument list handling has been reworked so that there
+ is always a single consistent position for use by :next, :prev and
+ :rewind.
+ + All of the historical options are now at least accepted, although
+ not all of them are implemented. (Edcompatible, hardtabs, lisp,
+ optimize, redraw, and slowopen aren't implemented.)
+ + The RE's have been reworked so that matches of length 0 are handled
+ in the same way as vi used to handle them.
+ + Several more mapping fixes and ex parser addressing fixes.
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