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+Version 4.8.0 (05/02/2020)
+ * Improve startup time by only polling for files to close
+ Fixes:
+ - Fix for segfault if termcap doesn't have Km entry
+ - Make screen exit code be 0 when checking --version
+ - Fix potential memory corruption when using OSC 49
+
+
+Version 4.7.0 (02/10/2019)
+ * Add support for SGR (1006) mouse mode
+ * Add support for OSC 11
+ * Update Unicode ambiguous and wide tables to 12.1.0
+ * Fixes:
+ - cross-compilation support (bug #43223)
+ - a lot of manpage fixes and cleanups
+
+Version 4.6.2 (23/10/2017):
+ * Fixes:
+ - revert changes to cursor position restore behavour (bug #51832)
+ - set freed pointer to NULL (bug #52133)
+ - documentation fixes
+ - fix windowlist crashes (bug #43054 & #51500)
+
+Version 4.6.1 (10/07/2017):
+ * Fixes:
+ - problems with starting session in some cases
+ - parallel make install
+ - segfault when querying info on nonUTF locale (bug #51402)
+
+Version 4.6.0 (28/06/2017):
+ * Update Unicode wide tables to 9.0 (bug #50044)
+ * Support more serial speeds
+ * Improved namespaces support
+ * Migrate from fifos to sockets
+ * Start viewing scrollback at first line of output (bug #49377)
+
+Version 4.5.1 (25/02/2017):
+ * Fixes:
+ - logfile permissions problem (CVE-2017-5618)
+ - SunOS build problem (bug #50089)
+ - FreeBSD core dumps (bug #50143)
+
+Version 4.5.0 (10/12/2016):
+ * Allow specifying logfile's name via command line parameter '-L'
+ * Fixes:
+ - broken handling of "bind u digraph U+" (bug #48691)
+ - crash with long $TERM (bug #48983)
+ - crash when bumping blank window
+ - build for AIX (bug #49149)
+ - %x improperly separating arguments
+ - install with custom DESTDIR (bug #48370)
+
+Version 4.4.0 (19/06/2016):
+ * Support up to 24 function keys
+ * Fix runtime issues
+ * 'logfile' command, starts logging into new file upon changing
+
+Version 4.3.1 (28/06/2015):
+ * Fix resize bug
+
+Version 4.3.0 (13/06/2015):
+ * Introduce Xx string escape showing the executed command of a window
+ * Implement dead/zombie window polling, allowing for auto reconnecting
+ * Allow setting hardstatus on first line
+
+ New Commands:
+ * 'sort' command sorting windows by title
+ * 'bumpleft', 'bumpright' - manually move windows on window list
+ * 'collapse' removing numbering 'gaps' between windows, by renumbering
+ * 'windows' command now accepts arguments for use with querying
+
+Version 4.2.1 (28/04/2014):
+ * allow for terminal with long $TERM (up to 32 characters)
+ * allow to use long logins
+ * documentation fixes
+ * runtime fixes
+
+Version 4.2.0 (17/04/2014):
+ New Commands:
+ * 'unbindall' to unbind all commands
+ * 'up', 'down', 'left', 'right' sub-commands for 'focus'
+ * 'rendition' to specify rendition to use in caption/hardstatus for
+ window-names that have bell/monitor/silence/so turned on.
+ * 'layout', with the following sub-commands
+ - 'title'
+ - 'number'
+ - 'autosave' ('autosave on' or 'autosave off')
+ - 'new'
+ - 'save' ('save <name>')
+ - 'select'
+ - 'next'
+ - 'prev'
+ - 'attach'
+ - 'show'
+ - 'remove'
+ - 'dump'
+ * 'group' for moving window(s) into a group.
+ * 'defmousetrack' and 'mousetrack', to turn on/off mouse-tracking for
+ displays. It's turned off by default. With mouse-tracking turned on, it's
+ possible to switch to a region ('focus') using mouse clicks. It's also
+ possible to select a text region in copy-mode using a mouse click to place
+ a mark and the scroll wheel to scroll through the buffer. Additional
+ features might be to allow clicking on window-titles in the caption to
+ switch to that window.
+ * All commands prefixed '@' are treated as 'quiet', i.e. '@'-prefixed commands
+ do not trigger any display messages.
+
+ Changed Commands:
+ * '-v' parameter to 'split' command for vertical splits.
+ * 'sorendition' deprecated in favour of 'rendition so'.
+ * 'digraph' can take a second parameter to specify custom digraphs. For
+ example,
+ 'digraph >= ≥' or 'digraph >= U+2265'
+ Using '0' as the second parameter will remove the digraph.
+ * 'stuff' will prompt for input if there's nothing to stuff.
+ * The argument to ":number" can be prefixed with '+' or '-' to use it as a
+ relative argument.
+ * '-g' parameter to 'windowlist' to show nested list of windows.
+ * '//group' parameter to 'screen' to create a grouped window.
+ * 'blankerprg' shows the currently set command on no argument.
+ * 'maxwin' can now be used to increase the number of maximum windows.
+
+ .screenrc:
+ * $PID expands to the PID of the screen session.
+ * $PWD expands to the current working directory of the session.
+ * $STY expands to the session name.
+ * Tilde-expansion in pathnames (e.g. for the 'source' command)
+ * C-style escapes can be used (e.g. "\n" to get a newline with 'stuff')
+ * '%p' in caption/hardstatus string expands to the PID of the backend, and
+ '%+p' expands to the PID of the frontend (display).
+ * '%S' in caption/hardstatus string expands to the session name.
+ * '%P' in the caption string evaluates to true if the region is in copy mode.
+ * '%E' in the caption string evaluates to true if the escape character has
+ currently been pressed.
+
+ Window List:
+ * Nested views when there are window groups (with 'windowlist -g').
+ * Press 'm' to toggle the most-recent view.
+ * Press 'g' to toggle nestedness.
+ * Press 'a' to view all windows in the list.
+ * Press '/' to search in the list.
+ * Press ',' and '.' to re-order windows in the list.
+ * Press 'K' to kill a window (requires confirmation).
+
+ Display List:
+ * Press 'd' to detach a display, 'D' to power-detach.
+
+ Others:
+ * Start using 'ChangeLog' for logging changes again.
+ * Terminfo update for 256-color support.
+ * Multiple input history (partially from Romain Francoise).
+ * vi-like fFtT;, searching in copy mode.
+ * In copy mode, search in reverse direction when 'N' is pressed.
+ * Tab-completion for command input.
+ * Some more readline-like bindings in input mode (e.g. ^W, ^D, ^P, ^N etc.)
+ * Fix displaying unicode characters in the caption/hardstatus on UTF8 locale.
+ * A revamped displays list (for 'displays' command)
+ * Increased default maximum number of windows from 40 to 100.
+ * Increased number color/attribute changes in caption/hardstatus string from 16 to 256.
+ * Some commands can be remotely queried using the -Q command-line flag.
+
+ In-Progress:
+ * Scripting support (thanks to Google Summer of Code 2009 project by Rui Guo)
+
+ Developers:
+ * Alexander Naumov <alexander_naumov@opensuse.org>
+ * Amadeusz Sławiński <amade@asmblr.net>
+ * Juergen Weigert <jw@suse.de>
+ * Michael Schroeder <mls@suse.de>
+ * Micah Cowan <micah@cowan.name>
+ * Sadrul Habib Chowdhury <sadrul@users.sourceforge.net>
+
+ Contributors:
+ * Clavelito <maromomo@hotmail.com>
+ * Dick <dick@mrns.nl>
+ * Gabriel <g2p.code@gmail.com>
+ * Benjamin Andresen <bandresen@gmail.com>
+ * Takeshi Banse <takebi@laafc.net>
+ * Maarten Billemont <lhunath@gmail.com>
+ * Curtis Brown <mrbrown8@juno.com>
+ * Cyril Brulebois <kibi@debian.org>
+ * Trent W Buck <trentbuck@gmail.com>
+ * Stephane Chazelas <stephane_chazelas@yahoo.fr>
+ * Kees Cook <kees@ubuntu.com>
+ * Thomas Dickey <tom@invisible-island.net>
+ * Christian Ebert <blacktrash@gmx.net>
+ * Geraint Edwards <gedge-lists-screen@yadn.org>
+ * Romain Francoise <romain@orebokech.com>
+ * Alexander Gattin <xrgtn@yandex.ru>
+ * Emanuele Giaquinta <e.giaquinta@glauco.it>
+ * Yi-Hsuan Hsin <mhsin@mhsin.org>
+ * Kipling Inscore <kinscore@synaptics.com>
+ * Chris Jones <cjns1989@gmail.com>
+ * Max Kalashnikov <mmt@maxkalashnikov.com>
+ * Steve Kemp <steve@steve.org.uk>
+ * Ryan Niebur <ryan@debian.org>
+ * Jan Christoph Nordholz <hesso@pool.math.tu-berlin.de>
+ * William Pursell <bill.pursell@gmail.com>
+ * Michael Scherer <misc@mandriva.org>
+ * Enrico Scholz <enrico.scholz@informatik.tu-chemnitz.de>
+ * Peter Teichman <peter@teichman.org>
+
+30.10.94
+
+This is a quick overview of screen's life story. But it is not up
+to date. You'll find more details about the revision history in
+patchlevel.h and newer changes are only documented there.
+
+31.7.93 -- 3.5.1
+================
+
+* writelock, number, paste with arg, at, zombie and wall commands added.
+
+* Access Control Lists and more multi-user support added.
+
+* select and setenv commands enhanced.
+
+* socket.c: motorola bugfix.
+
+* configure.in: --srcdir support.
+
+* configure.in: recognize alpha and SUNOS3 correctly.
+
+* doc/screen.texinfo: Documentation by Jason Merrill.
+
+13.05.93 -- 3.3.3
+=================
+
+* defautonuke, silence commands added.
+
+* exec command added.
+
+* hardcopydir, logdir commands added.
+
+* Made a superb configure script.
+
+* BROKEN_PIPE, SOCK_NOT_IN_FS added for braindamaged systems.
+
+* multi display, multi user support.
+
+* process command. CS, CE switch cursorkeycap in application mode.
+
+* lockprg pow_detaches on SIGHUP
+
+* ins_reg copy_reg commands.
+
+* new screenrc syntax.
+
+* split up screen.c and ansi.c
+
+21.10.92 -- 3.2.9
+================
+
+* ChangeLog: replaces CHANGES and is in GNUish format.
+
+* Makefile (CFLAGS, M_CFLAGS, LIBS, OPTIONS): moved user config here,
+ merged all Makefiles, GNUified
+
+* socket.c (FindSocket): ignoring bad files in $SCREENDIR
+
+* config/config.linux: ported.
+
+* utmp.c, exec.c, loadav.c: split apart from screen.c/fileio.c
+
+15.07.92 -- 3.2.8
+=================
+
+* ansi.c (WriteString): automatic character set switching for 8bit support
+
+3.2.3-3.2.7
+===========
+
+* concept changes: Display structure, Multi attacher
+
+...
+
+3.2.2
+=====
+
+* screen.c (main): -m option, "_M_ake always new session", ignore $STY
+
+* screen.c (main): -Ssessionname
+* fileio.c (RcLine): ^A:sessionname give your session a nicer name.
+
+* screen.c (main): supporting detached startup via screen -d -m -Ssockname
+
+* fileio.c (stripdev): moved, could not compile
+
+* overlay.h: "stackable overlay concept"
+
+* search.c: vi-like / and ? search AND emacs-like ^S and ^R incremental search
+ in scrollback
+
+* mark.c: I meant BSDI not BSD
+
+* concept change: struct display and struct newwin introduced.
+
+* screen.c (main): -v option prints version.
+
+* screen.c (MakeWindow): ^A:screen /dev/ttya opens a character device
+ instead of forking ShellProg with a pty pair.
+
+3.2.0
+=====
+
+Ultrix port
+
+Irix 3.3 SGI port
+
+shadow password suite supported
+
+data loss on stdin overflow fixed
+
+"refresh off" keyword added.
+
+3.1.1
+------
+
+Screen is now under the GNU copyleft license. See file COPYING.
+
+command line option -A. $LINES, $COLUMNS improved.
+
+C-A : vbellwait <sec>
+
+XENIX support (Ronald Khoo)
+
+SYSV has uname() instead of gethostname().
+
+hpux has setresuid.
+
+ClearScreen now saves image to scrollback buffer.
+
+mips has setenv.
+
+numerous bugfixes.
+
+3.1 finally released version.
+=============================
+
+3.0.99: last minute changes:
+----------------------------
+
+MIPS support (J{rvinen Markku)
+
+SVR4 support (Marc Boucher)
+
+secopen() secfopen() calls replace stat/access/open.
+C-a : echo improved.
+'register int'
+
+Changes up to Screen 3.0 Patchlevel 7
+=====================================
+
+Better terminfo support: Screen now checks if a termcap/info
+entry which the name "screen.$TERM" does exist. Look in the
+"VIRTUAL TERMINAL" section of the manual for more details.
+
+Many security improvements.
+
+ScrollRegion() bug fixed which caused slow scrolling if AL
+or DL was used.
+
+Pyramid and Ultrix support added. (Tim and Larry)
+
+ENVIRONMENT support.
+ /local/etc/screenrc checks for $SYSSCREENRC
+ $HOME/.screenrc checks for $ISCREENRC and $SCREENRC
+ /local/screens checks for $ISCREENDIR and $SCREENDIR
+ .screenrc understands ${VAR} and $VAR .
+
+screen 3.0 Patchlevel 6
+=======================
+
+.screenrc:
+ screen now only opens the windows you explicitly ask for. if you
+ specify none, you still get one window, of course.
+
+screen 3.0. Patchlevel 5
+========================
+
+Ansi prototyping by Christos.
+
+copy mode: CTRL-U / CTRL-D exchanged. code cleanup.
+
+changes to screen 3.0 patchlevel 4
+==================================
+
+markkeys "string"
+ allows to rebind the keys used in copy/history mode.
+ string is made up of pairs "<oldchar>=<newchar>" which are separated
+ by a colon. Oldchar and newchar are either single ascii characters,
+ or the two character sequence ^x, where x is an ascii character, or
+ a 3 digit octal value prepended with '\'. the string "\040=.:^M=q"
+ rebinds '.' to set marks, and the return rey will abort copy mode.
+
+set scrollback 100
+ resizes the scrollback history buffer to 100 lines. a default of 50
+ is installed.
+
+A Howard Chu like scrollback history is installed. Many vi-like keys
+ are added to the copy mode. The '?' key reports on cursor position.
+
+screen 3.0 Patchlevel 3
+=======================
+
+WriteString fixed, it did kill the display variable.
+
+Yet another LP bugfix.
+
+non vt100 semi-graphics character support.
+
+waynes patch fixed
+
+screen 3.0 Patchlevel 2
+=======================
+
+wayne patches cursor motion outside scrollregions.
+
+.screenrc
+ monitor on|off
+
+changes in Screen 3.0 Patchlevel 1
+==================================
+
+screen -wipe
+
+^A : set vbell_msg "Wuff Wuff"
+
+Thousand enhancements: help resizible, copy'n'paste in main
+ socket loop, and no more '\0' hackin'. :WS=\E8;%d;%dt:
+
+screen can now resize windows under sunview.
+
+^A : set crlf on|off
+ effects markroutine join.
+
+screen learned about sized windows under X
+
+screen -ls (-d) -q
+ quiet option. We count the number of detached (attached) sessions and set
+ a return value of 10+n. The -q option inhibits all startup
+ warnings/messages. i.e. screen -R -q may return with code 12 or higher
+ or start a new/old session.
+
+pow_detach_msg "text string"
+ new command, allows messages, terminal reset, etc. on logout caused
+ by pow_detach.
+
+^A : learned a new keyword "set":
+ commands like "login on" , "vbell off", ... affect the default for
+ windows to be created. But commands like "set login off" affect
+ the actual setting of this window. and not the default.
+ such commands may be bound to keys. example:
+ bind 'O' set login off
+ is valid in your .screenrc as well as typed at the ':' prompt.
+ a bonus is ":set all" which is synonym to ":help".
+ At the Colon prompt also KeyNames can be entered, alothough that makes
+ not always sense.
+
+^A x uses a builtin lockprg, if
+ a) we don't find our lockprg, or
+ b) user supplies us with the environmet variable LOCKPRG set to "builtin"
+ the builtin locks until your login password is typed. on systems using
+ "shadow password files" you are prompted for a password.
+
+markroutine can append joined.
+
+screen removes the "controlling tty" from utmp while ptys are attached.
+
+markroutine performs CR+NL when '\n' is pressed
+
+screen may die quietly, when no TERMCAP entry for "screen" is
+found, and screen is run under X-windows
+
+_SEQUENT_ marks sequent386_ptx
+
+screen runs now under SunOS4.1.1 (we need setsid()!).
+
+bug in SetForeWindow fixed.
+
+rare markroutine bug fixed.
+
+we dont open every file the attacher tells us.
+
+we have now our wonderful "Wuff, Wuff" visual_bell
+
+we have now the interprocess-communication-buffer. secure version.
+
+'^A =' removes the interprocess-communication-buffer.
+
+markroutine as in 2.1
+
+markroutine: 'a' toggles append mode,
+ '>' like ' ', but immediately WriteFile(DUMP_EXCHANGE) then.
+ 'A' like ' ', but first switch to append mode.
+
+.screenrc understands "screen 2:faui09 rlogin faui09 -l jnweiger"
+ and "password none"
+ and "vbell [on|off]"
+
+'^A :' allows .screenrc commands "online".
+
+screen now receives new $TERM from attacher, when it is reattached
+
+MakeClientSocket() fifo version does now test for access.
+
+.screenrc learns "hardstatus {on|off}"
+
+termcap's VB is used for vbell if available.
+
+Attach() code rewritten:
+ screen now lists socket directory, if it does not find a suitable socket
+ screen -d [host.tty] detaches a running screen.
+
+screen -[ls|list]
+ list all sockets that we find in our sockdir
+
+when the socket has been removed, send a SIGCHLD to the poor SCREEN
+process and it will try to recover. then try a 'screen -r' again.
+all the socket stuff lives now in an extra file.
+
+Major changes in version 2.4:
+=============================
+
+* Test version that presents the erlangen extensions from 2.0 in a 2.3
+ screen.
+
+* window resize support
+
+* screen locking C-a x
+
+* support for SYSV
+
+* password protection
+
+* copy & paste across screens
+
+* remote detach and power detach
+
+Major changes in version 2.3:
+
+* Terminal emulation has been significantly enhanced and bugfixed.
+
+* We now fully update the last character on the screen for true auto-
+ margin terminals, though there may be some delay before the character
+ can be safely added to the screen. If your terminal has character
+ insert it will be used to shorten the delay.
+
+* Added the "termcap" .screenrc command to tweak your terminal's termcap
+ entry AND to customize the termcap generated for the virtual terminals.
+ See also the -L and -O command-line options, and the SCREENCAP environ-
+ ment variable.
+
+* Fixed screen's character handling when detached or suspended to NOT block
+ the child processes in their windows -- output continues to be processed
+ in the background.
+
+* Added a.k.a.s (window-name aliases) that allow you to customize the
+ window-information line, including being able to change the name on-
+ the-fly to reflect what's currently running in the window (see the
+ -k option, shellaka command, and ALSO KNOWN AS discussion in the doc).
+
+* Added the ability to log the output of a window to a file (see the
+ "C-a H" (log) command).
+
+* Flow-control can now be set for each window and switched interactively
+ (see the "flow" command, -f option, and FLOW CONTROL discussion).
+
+* Individual windows can be included or excluded from mention in the
+ /etc/utmp file (see the "login" command and -l option).
+
+* Added an activity monitor, which allows you to have a window watched for
+ the start of any output and alert you when it occurs (see the "C-a M"
+ (monitor) command).
+
+* Enhanced the information in the window-information line to keep track of
+ windows that have: logging turned on '(L)'; beeped in the background '!';
+ became active while being monitored '@' (see the "C-a w" (windows) command).
+
+* Added an on-line help display that lists all the commands and their
+ key bindings (see the "C-a ?" (help) command).
+
+* Extended handling of the beep message (and also the new activity message)
+ to allow '~' to specify a literal beep (see the "beep" and "activity"
+ .screenrc commands).
+
+* You can now set the default action on receipt of a hangup signal: detach
+ or terminate (see the "autodetach" .screenrc command).
+
+* Routing of characters to their virtual terminals has been enhanced to
+ not drop characters nor (in rare circumstances) hang up screen.
+
+* The NFS compatibility has been enhanced.
+
+Major changes in version 2.0a:
+
+* Screen allows you to `detach' the "screen" session from the physical
+ terminal and resume it at a later point in time (possibly on a
+ different terminal or in a different login session).
+
+ To get an impression of this functionality do the following:
+
+ - call "screen" and create a couple of windows
+ - type Control-A Control-D (screen terminates; you are back
+ in the shell)
+ - call "screen -r" to resume the detached screen
+
+* Screen supports multiple character sets and the ISO 2022 control
+ functions to designate and switch between character sets.
+ This allows you, for instance, to make use of the VT100 graphics
+ character set or national character sets.