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urxvt(7)			  RXVT-UNICODE				urxvt(7)

NAME
     RXVT REFERENCE - FAQ, command sequences and other background information

SYNOPSIS
	# set a new font set
	printf '\33]50;%s\007' 9x15,xft:Kochi" Mincho"

	# change the locale and tell rxvt-unicode about it
	export LC_CTYPE=ja_JP.EUC-JP; printf "\33]701;$LC_CTYPE\007"

	# set window title
	printf '\33]2;%s\007' "new window title"

DESCRIPTION
     This  document  contains  the FAQ, the RXVT TECHNICAL REFERENCE documenting
     all escape sequences, and other background information.

     The newest version of this document is also available on the World Wide Web
     at <http://pod.tst.eu/http://cvs.schmorp.de/rxvt-unicode/doc/rxvt.7.pod>.

     The   main   manual   page   for	urxvt	 itself    is	 available    at
     <http://pod.tst.eu/http://cvs.schmorp.de/rxvt-unicode/doc/rxvt.1.pod>.

RXVT-UNICODE/URXVT FREQUENTLY ASKED QUESTIONS
   Meta, Features & Commandline Issues
     My question isn't answered here, can I ask a human?

     Before  sending  me  mail,  you could go to IRC: "irc.libera.chat", channel
     "#rxvt-unicode" has some rxvt-unicode enthusiasts that might be  interested
     in learning about new and exciting problems (but not FAQs :).

     I use Gentoo, and I have a problem...

     There are two big problems with Gentoo Linux: first, most if not all Gentoo
     systems  are  completely broken (missing or mismatched header files, broken
     compiler etc. are just the tip of the  iceberg);  secondly,  it  should  be
     called Gentoo GNU/Linux.

     For  these  reasons,  it  is  impossible to support rxvt-unicode on Gentoo.
     Problems appearing on Gentoo systems will usually simply be ignored  unless
     they can be reproduced on non-Gentoo systems.

     Does it support tabs, can I have a tabbed rxvt-unicode?

     Beginning	with  version  7.3,  there is a perl extension that implements a
     simple tabbed terminal. It is installed by default, so any of these  should
     give you tabs:

	urxvt -pe tabbed

	URxvt.perl-ext-common: default,tabbed

     It  will  also work fine with tabbing functionality of many window managers
     or similar tabbing programs, and its embedding-features allow it to be  em-
     bedded into other programs, as witnessed by doc/rxvt-tabbed or the upcoming
     "Gtk2::URxvt"  perl module, which features a tabbed urxvt (murxvt) terminal
     as an example embedding application.

     How do I know which rxvt-unicode version I'm using?

     The version number is displayed with the usage (-h). Also	the  escape  se-
     quence  "ESC [ 8 n" sets the window title to the version number. When using
     the urxvtc client, the version displayed is that of the daemon.

     Rxvt-unicode uses gobs of memory, how can I reduce that?

     Rxvt-unicode tries to obey the rule of not charging you for  something  you
     don't  use.  One thing you should try is to configure out all settings that
     you don't need, for example, Xft support is a resource hog by design,  when
     used. Compiling it out ensures that no Xft font will be loaded accidentally
     when rxvt-unicode tries to find a font for your characters.

     Also,  many people (me included) like large windows and even larger scroll-
     back buffers: Without "--enable-unicode3", rxvt-unicode will  use	6  bytes
     per  screen cell. For a 160x?? window this amounts to almost a kilobyte per
     line. A scrollback buffer of  10000  lines  will  then  (if  full)  use  10
     Megabytes	of  memory. With "--enable-unicode3" it gets worse, as rxvt-uni-
     code then uses 8 bytes per screen cell.

     How can I start urxvtd in a race-free way?

     Try "urxvtd -f -o", which tells urxvtd to open the display, create the lis-
     tening socket and then fork.

     How can I start urxvtd automatically when I run urxvtc?

     If you want to start urxvtd automatically whenever you run urxvtc	and  the
     daemon isn't running yet, use this script:

	#!/bin/sh
	urxvtc "$@"
	if [ $? -eq 2 ]; then
	   urxvtd -q -o -f
	   urxvtc "$@"
	fi

     This tries to create a new terminal, and if fails with exit status 2, mean-
     ing  it couldn't connect to the daemon, it will start the daemon and re-run
     the command. Subsequent invocations of the script will re-use the	existing
     daemon.

     Another  option  is  to  use  systemd  socket-based  activation  (see  sys-
     temd.socket(5)). Here is an example of a service unit file and of a  socket
     unit file for the default socket path:

     urxvtd.service
	   [Unit]
	   Description=urxvt terminal daemon
	   Requires=urxvtd.socket

	   [Service]
	   ExecStart=/usr/bin/urxvtd -o

     urxvtd.socket
	   [Unit]
	   Description=urxvt terminal daemon socket

	   [Socket]
	   ListenStream=%h/.urxvt/urxvtd-%H

	   [Install]
	   WantedBy=sockets.target

     How do I distinguish whether I'm running rxvt-unicode or a regular xterm? I
     need this to decide about setting colours etc.

     The  original rxvt and rxvt-unicode always export the variable "COLORTERM",
     so you can check and see if that is set. Note that several  programs,  JED,
     slrn,  Midnight  Commander  automatically	check  this  variable  to decide
     whether or not to use colour.

     How do I set the correct, full IP address for the DISPLAY variable?

     If you've compiled rxvt-unicode with DISPLAY_IS_IP and have  enabled  inse-
     cure mode then it is possible to use the following shell script snippets to
     correctly set the display. If your version of rxvt-unicode wasn't also com-
     piled  with  ESCZ_ANSWER  (as assumed in these snippets) then the COLORTERM
     variable can be used to distinguish rxvt-unicode from a regular xterm.

     Courtesy of Chuck Blake <cblake@BBN.COM> with the	following  shell  script
     snippets:

	# Bourne/Korn/POSIX family of shells:
	[ ${TERM:-foo} = foo ] && TERM=xterm # assume an xterm if we don't know
	if [ ${TERM:-foo} = xterm ]; then
	   stty -icanon -echo min 0 time 15 # see if enhanced rxvt or not
	   printf "\eZ"
	   read term_id
	   stty icanon echo
	   if [ ""${term_id} = '^[[?1;2C' -a ${DISPLAY:-foo} = foo ]; then
	      printf '\e[7n'	    # query the rxvt we are in for the DISPLAY string
	      read DISPLAY	    # set it in our local shell
	   fi
	fi

     How do I compile the manual pages on my own?

     You  need	to have a recent version of perl installed as /usr/bin/perl, one
     that comes with pod2man, pod2text and pod2xhtml (from Pod::Xhtml). Then  go
     to the doc subdirectory and enter "make alldoc".

     Isn't rxvt-unicode supposed to be small? Don't all those features bloat?

     I	often  get  asked  about  this, and I think, no, they didn't cause extra
     bloat. If you compare a minimal rxvt and a minimal urxvt, you can see  that
     the  urxvt  binary is larger (due to some encoding tables always being com-
     piled in), but it actually uses less memory (RSS) after startup. Even  with
     "--disable-everything",  this  comparison is a bit unfair, as many features
     unique to urxvt (locale, encoding conversion, iso14755 etc.) are already in
     use in this mode.

	 text	 data	  bss	  drs	  rss filename
	98398	 1664	   24	15695	 1824 rxvt --disable-everything
       188985	 9048	66616	18222	 1788 urxvt --disable-everything

     When you "--enable-everything" (which is unfair, as this involves	xft  and
     full  locale/XIM support which are quite bloaty inside libX11 and my libc),
     the two diverge, but not unreasonably so.

	 text	 data	  bss	  drs	  rss filename
       163431	 2152	   24	20123	 2060 rxvt --enable-everything
      1035683	49680	66648	29096	 3680 urxvt --enable-everything

     The very large size of the text section is explained by the east-asian  en-
     coding  tables,  which,  if unused, take up disk space but nothing else and
     can be compiled out unless you rely on X11 core fonts that use those encod-
     ings. The BSS size comes from the 64k emergency buffer that my c++ compiler
     allocates (but of course doesn't use unless you are out of  memory).  Also,
     using  an	xft font instead of a core font immediately adds a few megabytes
     of RSS. Xft indeed is responsible for a lot of RSS even when not used.

     Of course, due to every character using two or four bytes instead of one, a
     large scrollback buffer will ultimately make rxvt-unicode use more memory.

     Compared to e.g. Eterm (5112k), aterm (3132k) and xterm (4680k), this still
     fares rather well.  And  compared	to  some  monsters  like  gnome-terminal
     (21152k  +  extra	4204k  in separate processes) or konsole (22200k + extra
     43180k in daemons that stay around  after	exit,  plus  half  a  minute  of
     startup  time,  including	the hundreds of warnings it spits out), it fares
     extremely well *g*.

     Why C++, isn't that unportable/bloated/uncool?

     Is this a question? :) It comes up very often. The simple answer is: I  had
     to  write	it, and C++ allowed me to write and maintain it in a fraction of
     the time and effort (which is a scarce resource for me). Put even	shorter:
     It simply wouldn't exist without C++.

     My  personal stance on this is that C++ is less portable than C, but in the
     case of rxvt-unicode this hardly matters, as its portability limits are de-
     fined by things like X11, pseudo terminals, locale support and unix  domain
     sockets, which are all less portable than C++ itself.

     Regarding the bloat, see the above question: It's easy to write programs in
     C	that use gobs of memory, and certainly possible to write programs in C++
     that don't. C++ also often comes with large libraries, but this is not nec-
     essarily the case with GCC. Here is what rxvt links against  on  my  system
     with a minimal config:

	libX11.so.6 => /usr/X11R6/lib/libX11.so.6 (0x00002aaaaabc3000)
	libc.so.6 => /lib/libc.so.6 (0x00002aaaaadde000)
	libdl.so.2 => /lib/libdl.so.2 (0x00002aaaab01d000)
	/lib64/ld-linux-x86-64.so.2 (0x00002aaaaaaab000)

     And here is rxvt-unicode:

	libX11.so.6 => /usr/X11R6/lib/libX11.so.6 (0x00002aaaaabc3000)
	libgcc_s.so.1 => /lib/libgcc_s.so.1 (0x00002aaaaada2000)
	libc.so.6 => /lib/libc.so.6 (0x00002aaaaaeb0000)
	libdl.so.2 => /lib/libdl.so.2 (0x00002aaaab0ee000)
	/lib64/ld-linux-x86-64.so.2 (0x00002aaaaaaab000)

     No large bloated libraries (of course, none were linked in statically), ex-
     cept maybe libX11 :)

   Rendering, Font & Look and Feel Issues
     I can't get transparency working, what am I doing wrong?

     First  of	all, transparency isn't officially supported in rxvt-unicode, so
     you are mostly on your own. Do not bug the author about it (but you may bug
     everybody else). Also, if you can't get it working consider it  a	rite  of
     passage: ... and you failed.

     Here  are four ways to get transparency. Do read the manpage and option de-
     scriptions for the programs mentioned and rxvt-unicode. Really, do it!

     1. Use pseudo-transparency:

	Esetroot wallpaper.jpg
	urxvt -tr -tint red -sh 40

     That works. If you think it doesn't, you lack transparency and tinting sup-
     port, or you are unable to read.  This method requires that the background-
     setting program sets the _XROOTPMAP_ID or ESETROOT_PMAP_ID  property.  Com-
     patible programs are Esetroot, hsetroot and feh.

     2. Use a simple pixmap and emulate pseudo-transparency. This enables you to
     use  effects  other than tinting and shading: Just shade/tint/whatever your
     picture with gimp or any other tool:

	convert wallpaper.jpg -blur 20x20 -modulate 30 background.jpg
	urxvt -pixmap "background.jpg;:root"

     That works. If you think it doesn't, you lack GDK-PixBuf  support,  or  you
     are unable to read.

     3. Use an ARGB visual:

	urxvt -depth 32 -fg grey90 -bg rgba:0000/0000/4444/cccc

     This  requires  XFT  support,  and  the  support  of your X-server. If that
     doesn't work for you, find a working composite manager or	window	manager,
     both are required to support ARGB visuals for client windows.

     4. Use xcompmgr and let it do the job:

       xprop -frame -f _NET_WM_WINDOW_OPACITY 32c \
	     -set _NET_WM_WINDOW_OPACITY 0xc0000000

     Then  click on a window you want to make transparent. Replace 0xc0000000 by
     other values to change the degree of opacity. If it doesn't work  and  your
     server crashes, you got to keep the pieces.

     Why does rxvt-unicode sometimes leave pixel droppings?

     Most  fonts  were not designed for terminal use, which means that character
     size varies a lot. A font that is otherwise fine  for  terminal  use  might
     contain  some  characters that are simply too wide. Rxvt-unicode will avoid
     these characters. For characters that are just "a bit" too wide  a  special
     "careful" rendering mode is used that redraws adjacent characters.

     All  of this requires that fonts do not lie about character sizes, however:
     Xft fonts often draw glyphs larger than their acclaimed bounding  box,  and
     rxvt-unicode  has	no  way of detecting this (the correct way is to ask for
     the character bounding box, which unfortunately is wrong in these cases).

     It's not clear (to me at least), whether this is a bug in Xft, freetype, or
     the respective font. If you encounter this problem you might try using  the
     "-lsp" option to give the font more height. If that doesn't work, you might
     be forced to use a different font.

     All  of  this is not a problem when using X11 core fonts, as their bounding
     box data is correct.

     How can I keep rxvt-unicode from using reverse video so much?

     First of all, make sure you are running with the  right  terminal	settings
     ("TERM=rxvt-unicode"),  which  will  get rid of most of these effects. Then
     make sure you have specified colours for  italic  and  bold,  as  otherwise
     rxvt-unicode might use reverse video to simulate the effect:

	URxvt.colorBD:	white
	URxvt.colorIT:	green

     Some programs assume totally weird colours (red instead of blue), how can I
     fix that?

     For  some	unexplainable  reason,	some  rare  programs assume a very weird
     colour palette when confronted with a terminal with more than the	standard
     8	colours  (rxvt-unicode supports 88). The right fix is, of course, to fix
     these programs not to assume non-ISO colours without very good reasons.

     In the meantime, you can either edit your "rxvt-unicode"  terminfo  defini-
     tion  to  only  claim  8  colour support or use "TERM=rxvt", which will fix
     colours but keep you from using other rxvt-unicode features.

     Can I switch the fonts at runtime?

     Yes, using an escape sequence. Try something like this, which has the  same
     effect as using the "-fn" switch, and takes effect immediately:

	printf '\33]50;%s\007' "9x15bold,xft:Kochi Gothic"

     This  is  useful  if  you	e.g.  work primarily with japanese (and prefer a
     japanese font), but you have to switch to chinese temporarily, where japan-
     ese fonts would only be in your way.

     You can think of this as a kind of manual ISO-2022 switching.

     Why do italic characters look as if clipped?

     Many fonts have difficulties with italic characters and hinting. For  exam-
     ple,  the	otherwise very nicely hinted font "xft:Bitstream Vera Sans Mono"
     completely fails in its italic  face.  A  workaround  might  be  to  enable
     freetype autohinting, i.e. like this:

	URxvt.italicFont:	 xft:Bitstream Vera Sans Mono:italic:autohint=true
	URxvt.boldItalicFont:	 xft:Bitstream Vera Sans Mono:bold:italic:autohint=true

     Can I speed up Xft rendering somehow?

     Yes, the most obvious way to speed it up is to avoid Xft entirely, as it is
     simply  slow.  If	you  still  want  Xft fonts you might try to disable an-
     tialiasing (by appending ":antialias=false"), which saves	lots  of  memory
     and also speeds up rendering considerably.

     Rxvt-unicode doesn't seem to anti-alias its fonts, what is wrong?

     Rxvt-unicode  will  use whatever you specify as a font. If it needs to fall
     back to its default font search list it will prefer X11 core fonts, because
     they are small and fast, and then use Xft fonts. It has  antialiasing  dis-
     abled for most of them, because the author thinks they look best that way.

     If you want antialiasing, you have to specify the fonts manually.

     What's with this bold/blink stuff?

     If  no  bold  colour is set via "colorBD:", bold will invert text using the
     standard foreground colour.

     For the standard background colour, blinking will actually  make  the  text
     blink    when   compiled	with   "--enable-text-blink".	Without   "--en-
     able-text-blink", the blink attribute will be ignored.

     On ANSI colours, bold/blink attributes are used to set high-intensity fore-
     ground/background colours.

     color0-7 are the low-intensity colours.

     color8-15 are the corresponding high-intensity colours.

     I don't like the screen colours.  How do I change them?

     You can change the screen colours at run-time using ~/.Xdefaults  resources
     (or as long-options).

     Here  are	values that are supposed to resemble a VGA screen, including the
     murky brown that passes for low-intensity yellow:

	URxvt.color0:	#000000
	URxvt.color1:	#A80000
	URxvt.color2:	#00A800
	URxvt.color3:	#A8A800
	URxvt.color4:	#0000A8
	URxvt.color5:	#A800A8
	URxvt.color6:	#00A8A8
	URxvt.color7:	#A8A8A8

	URxvt.color8:	#000054
	URxvt.color9:	#FF0054
	URxvt.color10:	#00FF54
	URxvt.color11:	#FFFF54
	URxvt.color12:	#0000FF
	URxvt.color13:	#FF00FF
	URxvt.color14:	#00FFFF
	URxvt.color15:	#FFFFFF

     And here is a more complete set of non-standard colours.

	URxvt.cursorColor:  #dc74d1
	URxvt.pointerColor: #dc74d1
	URxvt.background:   #0e0e0e
	URxvt.foreground:   #4ad5e1
	URxvt.color0:	    #000000
	URxvt.color8:	    #8b8f93
	URxvt.color1:	    #dc74d1
	URxvt.color9:	    #dc74d1
	URxvt.color2:	    #0eb8c7
	URxvt.color10:	    #0eb8c7
	URxvt.color3:	    #dfe37e
	URxvt.color11:	    #dfe37e
	URxvt.color5:	    #9e88f0
	URxvt.color13:	    #9e88f0
	URxvt.color6:	    #73f7ff
	URxvt.color14:	    #73f7ff
	URxvt.color7:	    #e1dddd
	URxvt.color15:	    #e1dddd

     They have been described (not by me) as "pretty girly".

     Why do some characters look so much different than others?

     See next entry.

     How does rxvt-unicode choose fonts?

     Most fonts do not contain the full range of Unicode, which is fine. Chances
     are that the font you (or the admin/package maintainer of	your  system/os)
     have specified does not cover all the characters you want to display.

     rxvt-unicode  makes  a best-effort try at finding a replacement font. Often
     the result is fine, but sometimes the  chosen  font  looks  bad/ugly/wrong.
     Some  fonts have totally strange characters that don't resemble the correct
     glyph at all, and rxvt-unicode lacks the artificial intelligence to  detect
     that a specific glyph is wrong: it has to believe the font that the charac-
     ters it claims to contain indeed look correct.

     In  that  case,  select  a  font of your taste and add it to the font list,
     e.g.:

	urxvt -fn basefont,font2,font3...

     When rxvt-unicode sees a character, it will first look at the base font. If
     the base font does not contain the character, it will go to the next  font,
     and so on. Specifying your own fonts will also speed up this search and use
     less resources within rxvt-unicode and the X-server.

     The  only	limitation is that none of the fonts may be larger than the base
     font, as the base font defines the terminal character cell size, which must
     be the same due to the way terminals work.

     Why do some chinese characters look so different than others?

     This is because there is a difference between script and language --  rxvt-
     unicode does not know which language the text that is output is, as it only
     knows  the  unicode  character  codes.  If rxvt-unicode first sees a japan-
     ese/chinese character, it might choose a japanese font for display.  Subse-
     quent  japanese characters will use that font. Now, many chinese characters
     aren't represented in japanese fonts, so when the first non-japanese  char-
     acter  comes up, rxvt-unicode will look for a chinese font -- unfortunately
     at this point, it will still use the japanese font for  chinese  characters
     that are also in the japanese font.

     The  workaround  is  easy:  just tag a chinese font at the end of your font
     list (see the previous question). The key is to view the  font  list  as  a
     preference  list:	If you expect more japanese, list a japanese font first.
     If you expect more chinese, put a chinese font first.

     In the future it might be possible to switch language preferences	at  run-
     time (the internal data structure has no problem with using different fonts
     for the same character at the same time, but no interface for this has been
     designed yet).

     Until  then, you might get away with switching fonts at runtime (see "Can I
     switch the fonts at runtime?" later in this document).

     How can I make mplayer display video correctly?

     We are working on it, in the meantime, as a workaround, use something like:

	urxvt -b 600 -geometry 20x1 -e sh -c 'mplayer -wid $WINDOWID file...'

     Why is the cursor now blinking in emacs/vi/...?

     This is likely caused by your editor/program's use of the "cvvis"	terminfo
     capability.  Emacs  uses  it by default, as well as some versions of vi and
     possibly other programs.

     In emacs, you can switch that off by adding this to your ".emacs" file:

	(setq visible-cursor nil)

     For other programs, if they do not have an option, your have to remove  the
     "cvvis" capability from the terminfo description.

     When  urxvt first added the blinking cursor option, it didn't add a "cvvis"
     capability, which served no purpose before. Version 9.21 introduced "cvvis"
     (and the ability to control blinking independent of cursor shape) for  com-
     patibility  with other terminals, which traditionally use a blinking cursor
     for "cvvis". This also reflects the intent of programs such as  emacs,  who
     expect "cvvis" to enable a blinking cursor.

   Keyboard, Mouse & User Interaction
     The  new selection selects pieces that are too big, how can I select single
     words?

     If you want to select e.g. alphanumeric words, you can  use  the  following
     setting:

	URxvt.selection.pattern-0: ([[:word:]]+)

     If you click more than twice, the selection will be extended more and more.

     To get a selection that is very similar to the old code, try this pattern:

	URxvt.selection.pattern-0: ([^"&'()*,;<=>?@[\\\\]^`{|})]+)

     Please  also  note  that the LeftClick Shift-LeftClick combination also se-
     lects words like the old code.

     I don't like the new selection/popups/hotkeys/perl, how do I change/disable
     it?

     You can disable the perl extension completely by setting the  perl-ext-com-
     mon  resource  to the empty string, which also keeps rxvt-unicode from ini-
     tialising perl, saving memory.

     If you only want to disable specific features, you first have  to	identify
     which perl extension is responsible. For this, read the section PREPACKAGED
     EXTENSIONS  in the urxvtperl(3) manpage. For example, to disable the selec-
     tion-popup and option-popup, specify this perl-ext-common resource:

	URxvt.perl-ext-common: default,-selection-popup,-option-popup

     This will keep the default extensions, but disable  the  two  popup  exten-
     sions.  Some  extensions  can  also  be configured, for example, scrollback
     search mode is triggered by M-s. You can move it to any  other  combination
     by  adding  a  keysym  resource  that  binds the desired combination to the
     "start" action of "searchable-scrollback" and another one that binds M-s to
     the "builtin:" action:

	URxvt.keysym.CM-s: searchable-scrollback:start
	URxvt.keysym.M-s: builtin:

     The cursor moves when selecting text in the current input line,  how  do  I
     switch this off?

     See next entry.

     During  rlogin/ssh/telnet/etc.  sessions,	clicking near the cursor outputs
     strange escape sequences, how do I fix this?

     These are caused by the "readline" perl  extension.  Under  normal  circum-
     stances,  it will move your cursor around when you click into the line that
     contains it. It tries hard not to do this at the  wrong  moment,  but  when
     running a program that doesn't parse cursor movements or in some cases dur-
     ing rlogin sessions, it fails to detect this properly.

     You can permanently switch this feature off by disabling the "readline" ex-
     tension:

	URxvt.perl-ext-common: default,-readline

     My numeric keypad acts weird and generates differing output?

     Some Debian GNU/Linux users seem to have this problem, although no specific
     details  were  reported  so  far. It is possible that this is caused by the
     wrong "TERM" setting, although the details of whether and how this can hap-
     pen are unknown, as "TERM=rxvt" should offer a compatible keymap.	See  the
     answer to the previous question, and please report if that helped.

     My Compose (Multi_key) key is no longer working.

     The most common causes for this are that either your locale is not set cor-
     rectly,  or you specified a preeditType that is not supported by your input
     method. For example, if you specified OverTheSpot	and  your  input  method
     (e.g. the default input method handling Compose keys) does not support this
     (for  instance  because  it is not visual), then rxvt-unicode will continue
     without an input method.

     In this case either do not specify a preeditType or specify more  than  one
     pre-edit style, such as OverTheSpot,Root,None.

     If it still doesn't work, then maybe your input method doesn't support com-
     pose  sequences  -  to  fall  back to the built-in one, make sure you don't
     specify an input method via "-im" or "XMODIFIERS".

     I cannot type "Ctrl-Shift-2" to get an ASCII NUL character due to ISO 14755

     Either try "Ctrl-2" alone (it often is mapped to ASCII NUL even on interna-
     tional keyboards) or simply use ISO 14755 support to your advantage, typing
     <Ctrl-Shift-0> to get a ASCII NUL. This works for other codes, too, such as
     "Ctrl-Shift-1-d" to type the default telnet escape character and so on.

     Mouse cut/paste suddenly no longer works.

     Make sure that mouse reporting is actually turned off  since  killing  some
     editors prematurely may leave it active. I've heard that tcsh may use mouse
     reporting	unless	it  is	otherwise  specified. A quick check is to see if
     cut/paste works when the Alt or Shift keys are pressed.

     What's with the strange Backspace/Delete key behaviour?

     Assuming that the physical  Backspace  key  corresponds  to  the  Backspace
     keysym  (not likely for Linux ... see the following question) there are two
     standard values that can be used for Backspace: "^H" and "^?".

     Historically, either value is correct, but rxvt-unicode adopts  the  debian
     policy  of  using	"^?"  when unsure, because it's the one and only correct
     choice :).

     It is possible to toggle between "^H" and	"^?"  with  the  DECBKM  private
     mode:

	# use Backspace = ^H
	$ stty erase ^H
	$ printf "\e[?67h"

	# use Backspace = ^?
	$ stty erase ^?
	$ printf "\e[?67l"

     This  helps  satisfy some of the Backspace discrepancies that occur, but if
     you use Backspace = "^H", make sure that the termcap/terminfo  value  prop-
     erly reflects that.

     The  Delete key is a another casualty of the ill-defined Backspace problem.
     To avoid confusion between the Backspace and Delete keys,	the  Delete  key
     has been assigned an escape sequence to match the vt100 for Execute ("ESC [
     3 ~") and is in the supplied termcap/terminfo.

     Some other Backspace problems:

     some editors use termcap/terminfo, some editors (vim I'm told) expect Back-
     space = ^H, GNU Emacs (and Emacs-like editors) use ^H for help.

     Perhaps someday this will all be resolved in a consistent manner.

     I don't like the key-bindings.  How do I change them?

     There  are some compile-time selections available via configure. Unless you
     have run "configure" with the "--disable-resources" option you can use  the
     `keysym' resource to alter the keystrings associated with keysyms.

     Here's an example for a URxvt session started using "urxvt -name URxvt"

	URxvt.keysym.Prior:	    \033[5~
	URxvt.keysym.Next:	    \033[6~
	URxvt.keysym.Home:	    \033[7~
	URxvt.keysym.End:	    \033[8~
	URxvt.keysym.Up:	    \033[A
	URxvt.keysym.Down:	    \033[B
	URxvt.keysym.Right:	    \033[C
	URxvt.keysym.Left:	    \033[D

     See some more examples in the documentation for the keysym resource.

     I'm  using keyboard model XXX that has extra Prior/Next/Insert keys. How do
     I make use of them? For example, the Sun Keyboard type 4 has the  following
     map

	KP_Insert == Insert
	F22 == Print
	F27 == Home
	F29 == Prior
	F33 == End
	F35 == Next

     Rather  than  have rxvt-unicode try to accommodate all the various possible
     keyboard mappings, it is better to use `xmodmap' to remap the keys  as  re-
     quired for your particular machine.

   Terminal Configuration
     Can I see a typical configuration?

     The  default  configuration tries to be xterm-like, which I don't like that
     much, but it's least surprise to regular users.

     As a rxvt or rxvt-unicode user, you are practically supposed to invest time
     into customising your terminal. To get you started, here  is  the	author's
     .Xdefaults entries, with comments on what they do. It's certainly not typi-
     cal, but what's typical...

	URxvt.cutchars: "()*,<>[]{}|'
	URxvt.print-pipe: cat >/some/path

     These are just for testing stuff.

	URxvt.imLocale: ja_JP.UTF-8
	URxvt.preeditType: OnTheSpot,None

     This tells rxvt-unicode to use a special locale when communicating with the
     X	Input Method, and also tells it to only use the OnTheSpot pre-edit type,
     which requires the "xim-onthespot" perl extension but rewards me with  cor-
     rect-looking fonts.

	URxvt.perl-lib: /root/lib/urxvt
	URxvt.perl-ext-common: default,selection-autotransform,selection-pastebin,xim-onthespot,remote-clipboard
	URxvt.selection.pattern-0: ( at .*? line \\d+)
	URxvt.selection.pattern-1: ^(/[^:]+):\
	URxvt.selection-autotransform.0: s/^([^:[:space:]]+):(\\d+):?$/:e \\Q$1\\E\\x0d:$2\\x0d/
	URxvt.selection-autotransform.1: s/^ at (.*?) line (\\d+)$/:e \\Q$1\\E\\x0d:$2\\x0d/

     This is my perl configuration. The first two set the perl library directory
     and also tells urxvt to use a large number of extensions. I develop for my-
     self mostly, so I actually use most of the extensions I write.

     The selection stuff mainly makes the selection perl-error-message aware and
     tells  it to convert perl error messages into vi-commands to load the rele-
     vant file and go to the error line number.

	URxvt.scrollstyle:	plain
	URxvt.secondaryScroll:	true

     As the documentation says: plain is the preferred scrollbar for the author.
     The "secondaryScroll" configures urxvt to scroll in full-screen apps,  like
     screen,  so  lines  scrolled  out	of  screen  end up in urxvt's scrollback
     buffer.

	URxvt.background:	#000000
	URxvt.foreground:	gray90
	URxvt.color7:		gray90
	URxvt.colorBD:		#ffffff
	URxvt.cursorColor:	#e0e080
	URxvt.throughColor:	#8080f0
	URxvt.highlightColor:	#f0f0f0

     Some colours. Not sure which ones are being used or even non-defaults,  but
     these are in my .Xdefaults. Most notably, they set foreground/background to
     light  gray/black, and also make sure that the colour 7 matches the default
     foreground colour.

	URxvt.underlineColor:	yellow

     Another colour, makes underline lines look different. Sometimes hurts,  but
     is mostly a nice effect.

	URxvt.geometry: 	154x36
	URxvt.loginShell:	false
	URxvt.meta:		ignore
	URxvt.utmpInhibit:	true

     Uh,  well,  should  be mostly self-explanatory. By specifying some defaults
     manually, I can quickly switch them for testing.

	URxvt.saveLines:	8192

     A large scrollback buffer is essential. Really.

	URxvt.mapAlert: 	true

     The only case I use it is for my IRC window, which I like to keep iconified
     till people msg me (which beeps).

	URxvt.visualBell:	true

     The audible bell is often annoying, especially when in a crowd.

	URxvt.insecure: 	true

     Please don't hack my mutt! Ooops...

	URxvt.pastableTabs:	false

     I once thought this is a great idea.

	urxvt.font:		9x15bold,\
				-misc-fixed-bold-r-normal--15-140-75-75-c-90-iso10646-1,\
				-misc-fixed-medium-r-normal--15-140-75-75-c-90-iso10646-1, \
				[codeset=JISX0208]xft:Kochi Gothic, \
				xft:Bitstream Vera Sans Mono:autohint=true, \
				xft:Code2000:antialias=false
	urxvt.boldFont: 	-xos4-terminus-bold-r-normal--14-140-72-72-c-80-iso8859-15
	urxvt.italicFont:	xft:Bitstream Vera Sans Mono:italic:autohint=true
	urxvt.boldItalicFont:	xft:Bitstream Vera Sans Mono:bold:italic:autohint=true

     I wrote rxvt-unicode to be able to specify fonts exactly. So don't be over-
     whelmed. A special note: the "9x15bold" mentioned	above  is  actually  the
     version  from XFree-3.3, as XFree-4 replaced it by a totally different font
     (different glyphs for ";" and many other harmless	characters),  while  the
     second  font  is actually the "9x15bold" from XFree4/XOrg. The bold version
     has less chars than the medium version, so I use it  for  rare  characters,
     too.  When  editing  sources  with vim, I use italic for comments and other
     stuff, which looks quite good with Bitstream Vera anti-aliased.

     Terminus is a quite bad font (many very wrong glyphs), but for most  of  my
     purposes,	it  works,  and  gives a different look, as my normal (Non-bold)
     font is already bold, and I want to see a difference between bold and  nor-
     mal fonts.

     Please note that I used the "urxvt" instance name and not the "URxvt" class
     name.  That  is because I use different configs for different purposes, for
     example, my IRC window is started with "-name  IRC",  and	uses  these  de-
     faults:

	IRC*title:		IRC
	IRC*geometry:		87x12+535+542
	IRC*saveLines:		0
	IRC*mapAlert:		true
	IRC*font:		suxuseuro
	IRC*boldFont:		suxuseuro
	IRC*colorBD:		white
	IRC*keysym.M-C-1:	command:\033]710;suxuseuro\007\033]711;suxuseuro\007
	IRC*keysym.M-C-2:	command:\033]710;9x15bold\007\033]711;9x15bold\007

     "Alt-Ctrl-1"  and	"Alt-Ctrl-2"  switch  between  two different font sizes.
     "suxuseuro" allows me to keep an eye (and actually read) stuff while  keep-
     ing  a  very  small  window. If somebody pastes something complicated (e.g.
     japanese), I temporarily switch to a larger font.

     The above is all in my ".Xdefaults" (I don't use ".Xresources" nor "xrdb").
     I also have some resources in a  separate	".Xdefaults-hostname"  file  for
     different hosts, for example, on my main desktop, I use:

	URxvt.keysym.C-M-q: command:\033[3;5;5t
	URxvt.keysym.C-M-y: command:\033[3;5;606t
	URxvt.keysym.C-M-e: command:\033[3;1605;5t
	URxvt.keysym.C-M-c: command:\033[3;1605;606t
	URxvt.keysym.C-M-p: perl:test

     The  first for keysym definitions allow me to quickly bring some windows in
     the layout I like most. Ion users might start laughing but will stop  imme-
     diately  when  I tell them that I use my own Fvwm2 module for much the same
     effect as Ion provides, and I only very rarely use the above  key	combina-
     tions :->

     Why doesn't rxvt-unicode read my resources?

     Well,  why, indeed? It does, in a way very similar to other X applications.
     Most importantly, this means that if you or your OS  loads  resources  into
     the  X  display  (the right way to do it), rxvt-unicode will ignore any re-
     source files in your home directory. It  will  only  read	$HOME/.Xdefaults
     when no resources are attached to the display.

     If  you  have  or use an $HOME/.Xresources file, chances are that resources
     are loaded into your X-server. In this case, you  have  to  re-login  after
     every change (or run xrdb -merge $HOME/.Xresources).

     Also consider the form resources have to use:

       URxvt.resource: value

     If you want to use another form (there are lots of different ways of speci-
     fying resources), make sure you understand whether and why it works. If un-
     sure, use the form above.

     When I log-in to another system it tells me about missing terminfo data?

     The terminal description used by rxvt-unicode is not as widely available as
     that for xterm, or even rxvt (for which the same problem often arises).

     The  correct solution for this problem is to install the terminfo, this can
     be done by simply installing rxvt-unicode on the remote system as well  (in
     case  you	have  a nice package manager ready), or you can install the ter-
     minfo database manually like this (with ncurses infocmp. works as user  and
     root):

	REMOTE=remotesystem.domain
	infocmp rxvt-unicode | ssh $REMOTE "mkdir -p .terminfo && cat >/tmp/ti && tic /tmp/ti"

     One  some	systems  you  might  need  to  set $TERMINFO to the full path of
     $HOME/.terminfo for this to work.

     If you cannot or  do  not	want  to  do  this,  then  you	can  simply  set
     "TERM=rxvt"  or  even "TERM=xterm", and live with the small number of prob-
     lems arising, which includes wrong keymapping, less and  different  colours
     and  some refresh errors in fullscreen applications. It's a nice quick-and-
     dirty workaround for rare cases, though.

     If you always want to do this (and are fine with the consequences) you  can
     either recompile rxvt-unicode with the desired TERM value or use a resource
     to set it:

	URxvt.termName: rxvt

     If  you don't plan to use rxvt (quite common...) you could also replace the
     rxvt terminfo file with the rxvt-unicode one and use "TERM=rxvt".

     nano fails with "Error opening terminal: rxvt-unicode"

     This exceptionally confusing and useless error message is printed	by  nano
     when it can't find the terminfo database. Nothing is wrong with your termi-
     nal, read the previous answer for a solution.

     "tic" outputs some error when compiling the terminfo entry.

     Most  likely  it's  the  empty  definition for "enacs=". Just replace it by
     "enacs=\E[0@" and try again.

     "bash"'s readline does not work correctly under urxvt.

     See next entry.

     I need a termcap file entry.

     One reason you might want this is that some distributions or operating sys-
     tems still compile some programs using the long-obsoleted	termcap  library
     (Fedora's	bash  is one example) and rely on a termcap entry for "rxvt-uni-
     code".

     You could use rxvt's termcap entry with reasonable results in  many  cases.
     You  can  also  create  a termcap entry by using terminfo's infocmp program
     like this:

	infocmp -C rxvt-unicode

     Or you could use the termcap entry in doc/etc/rxvt-unicode.termcap,  gener-
     ated by the command above.

     Why does "ls" no longer have coloured output?

     The  "ls" in the GNU coreutils unfortunately doesn't use terminfo to decide
     whether a terminal has colour, but uses its own configuration  file.  Need-
     less  to  say,  "rxvt-unicode"  is not in its default file (among with most
     other terminals supporting colour). Either add:

	TERM rxvt-unicode

     to "/etc/DIR_COLORS" or simply add:

	alias ls='ls --color=auto'

     to your ".profile" or ".bashrc".

     Why doesn't vim/emacs etc. use the 88 colour mode?

     See next entry.

     Why doesn't vim/emacs etc. make use of italic?

     See next entry.

     Why are the secondary screen-related options not working properly?

     Make sure you are using "TERM=rxvt-unicode".  Some  pre-packaged  distribu-
     tions  break  rxvt-unicode  by setting "TERM" to "rxvt", which doesn't have
     these extra features. Unfortunately, some of these furthermore fail to even
     install the "rxvt-unicode" terminfo file, so you will need to install it on
     your own (See the question When I log-in to  another  system  it  tells  me
     about missing terminfo data? on how to do this).

   Encoding / Locale / Input Method Issues
     Rxvt-unicode does not seem to understand the selected encoding?

     See next entry.

     Unicode does not seem to work?

     If  you  encounter  strange  problems like typing an accented character but
     getting two unrelated other characters or similar, or if program output  is
     subtly garbled, then you should check your locale settings.

     Rxvt-unicode  must  be started with the same "LC_CTYPE" setting as the pro-
     grams running in it. Often rxvt-unicode is started in the "C" locale, while
     the login script running within the rxvt-unicode window changes the  locale
     to  something  else, e.g. "en_GB.UTF-8". Needless to say, this is not going
     to work, and is the most common cause for problems.

     The best thing is to fix your startup environment, as you will  likely  run
     into other problems. If nothing works you can try this in your .profile.

       printf '\33]701;%s\007' "$LC_CTYPE"   # $LANG or $LC_ALL are worth a try, too

     If  this  doesn't	work,  then maybe you use a "LC_CTYPE" specification not
     supported on your systems. Some systems have a "locale" command which  dis-
     plays  this  (also,  "perl -e0" can be used to check locale settings, as it
     will complain loudly if it cannot set the locale). If it displays something
     like:

       locale: Cannot set LC_CTYPE to default locale: ...

     Then the locale you specified is not supported on your system.

     If nothing works and you are sure that everything is set correctly then you
     will need to remember a little known fact: Some programs just don't support
     locales :(

     How does rxvt-unicode determine the encoding to use?

     See next entry.

     Is there an option to switch encodings?

     Unlike some other terminals, rxvt-unicode has no encoding	switch,  and  no
     specific  "utf-8"	mode, such as xterm. In fact, it doesn't even know about
     UTF-8 or any other encodings with respect to terminal I/O.

     The reasons is that there exists a perfectly fine mechanism  for  selecting
     the  encoding, doing I/O and (most important) communicating this to all ap-
     plications so everybody agrees on character properties such  as  width  and
     code number. This mechanism is the locale. Applications not using that info
     will have problems (for example, "xterm" gets the width of characters wrong
     as it uses its own, locale-independent table under all locales).

     Rxvt-unicode  uses  the  "LC_CTYPE" locale category to select encoding. All
     programs doing the same (that is, most) will automatically agree in the in-
     terpretation of characters.

     Unfortunately, there is no system-independent way to select locales, nor is
     there a standard on how locale specifiers will look like.

     On most systems, the content of the "LC_CTYPE"  environment  variable  con-
     tains an arbitrary string which corresponds to an already-installed locale.
     Common   names   for   locales   are   "en_US.UTF-8",  "de_DE.ISO-8859-15",
     "ja_JP.EUC-JP", i.e. "language_country.encoding",	but  other  forms  (i.e.
     "de" or "german") are also common.

     Rxvt-unicode ignores all other locale categories, and except for the encod-
     ing,  ignores country or language-specific settings, i.e. "de_DE.UTF-8" and
     "ja_JP.UTF-8" are the normally same to rxvt-unicode.

     If you want to use a specific encoding you have  to  make	sure  you  start
     rxvt-unicode with the correct "LC_CTYPE" category.

     Can I switch locales at runtime?

     Yes,  using  an  escape sequence. Try something like this, which sets rxvt-
     unicode's idea of "LC_CTYPE".

       printf '\33]701;%s\007' ja_JP.SJIS

     See also the previous answer.

     Sometimes this capability is rather handy when you want to work in one  lo-
     cale  (e.g. "de_DE.UTF-8") but some programs don't support it (e.g. UTF-8).
     For example, I use this script to start "xjdic", which first switches to  a
     locale supported by xjdic and back later:

	printf '\33]701;%s\007' ja_JP.SJIS
	xjdic -js
	printf '\33]701;%s\007' de_DE.UTF-8

     You  can  also use xterm's "luit" program, which usually works fine, except
     for some locales where character width differs between program-  and  rxvt-
     unicode-locales.

     I have problems getting my input method working.

     Try  a  search engine, as this is slightly different for every input method
     server.

     Here is a checklist:

     - Make sure your locale and the imLocale are supported on your OS.
	 Try "locale -a" or check the documentation for your OS.

     - Make sure your locale or imLocale matches a locale supported by your XIM.
	 For example, kinput2 does not support UTF-8  locales,	you  should  use
	 "ja_JP.EUC-JP" or equivalent.

     - Make sure your XIM server is actually running.
     - Make sure the "XMODIFIERS" environment variable is set correctly when
     starting rxvt-unicode.
	 When you want to use e.g. kinput2, it must be set to "@im=kinput2". For
	 scim, use "@im=SCIM". You can see what input method servers are running
	 with this command:

	    xprop -root XIM_SERVERS

     My input method wants <some encoding> but I want UTF-8, what can I do?

     You  can  specify separate locales for the input method and the rest of the
     terminal, using the resource "imlocale":

	URxvt.imlocale: ja_JP.EUC-JP

     Now you can start your terminal with "LC_CTYPE=ja_JP.UTF-8" and  still  use
     your  input method. Please note, however, that, depending on your Xlib ver-
     sion, you may not be able to input characters outside "EUC-JP" in a  normal
     way then, as your input method limits you.

     Rxvt-unicode crashes when the X Input Method changes or exits.

     Unfortunately,  this is unavoidable, as the XIM protocol is racy by design.
     Applications can avoid some crashes at the expense of memory leaks, and In-
     put Methods can avoid some crashes by careful ordering at exit  time.  kin-
     put2 (and derived input methods) generally succeeds, while SCIM (or similar
     input  methods)  fails.  In  the end, however, crashes cannot be completely
     avoided even if both sides cooperate.

     So the only workaround is not to kill your Input Method Servers.

   Operating Systems / Package Maintaining
     I am maintaining rxvt-unicode for distribution/OS XXX, any recommendation?

     You should build one binary with the default options. configure now enables
     most useful options, and the trend goes to making them  runtime-switchable,
     too,  so  there is usually no drawback to enabling them, except higher disk
     and possibly memory usage. The perl interpreter should be enabled,  as  im-
     portant functionality (menus, selection, likely more in the future) depends
     on it.

     You  should  not  overwrite  the "perl-ext-common" and "perl-ext" resources
     system-wide (except maybe with "defaults"). This will result in useful  be-
     haviour.	If   your   distribution  aims	at  low  memory,  add  an  empty
     "perl-ext-common" resource to the app-defaults file.  This  will  keep  the
     perl interpreter disabled until the user enables it.

     If  you  can/want	build  more binaries, I recommend building a minimal one
     with "--disable-everything" (very useful) and a  maximal  one  with  "--en-
     able-everything"  (less  useful, it will be very big due to a lot of encod-
     ings built-in that increase download times and are rarely used).

     I need to make it setuid/setgid to support utmp/ptys  on  my  OS,	is  this
     safe?

     It should be, starting with release 7.1. You are encouraged to properly in-
     stall urxvt with privileges necessary for your OS now.

     When  rxvt-unicode detects that it runs setuid or setgid, it will fork into
     a helper process for privileged operations (pty handling on  some	systems,
     utmp/wtmp/lastlog handling on others) and drop privileges immediately. This
     is  much safer than most other terminals that keep privileges while running
     (but is more relevant to urxvt, as it contains things as perl interpreters,
     which might be "helpful" to attackers).

     This forking is done as the very first within main(), which is  very  early
     and  reduces  possible  bugs  to  initialisation code run before main(), or
     things like the dynamic loader of your system, which should result in  very
     little risk.

     I am on FreeBSD and rxvt-unicode does not seem to work at all.

     Rxvt-unicode requires the symbol "__STDC_ISO_10646__" to be defined in your
     compile  environment,  or	an implementation that implements it, whether it
     defines the symbol or not. "__STDC_ISO_10646__" requires  that  wchar_t  is
     represented as unicode.

     As you might have guessed, FreeBSD does neither define this symbol nor does
     it support it. Instead, it uses its own internal representation of wchar_t.
     This is, of course, completely fine with respect to standards.

     However,  that  means  rxvt-unicode only works in "POSIX", "ISO-8859-1" and
     "UTF-8" locales under FreeBSD (which all use Unicode as wchar_t).

     "__STDC_ISO_10646__" is the only sane way to support multi-language apps in
     an OS, as using a locale-dependent (and non-standardized) representation of
     wchar_t makes it impossible to convert between wchar_t (as used by X11  and
     your applications) and any other encoding without implementing OS-specific-
     wrappers  for  each  and  every locale. There simply are no APIs to convert
     wchar_t into anything except the current locale encoding.

     Some applications (such as the formidable mlterm) work around this by  car-
     rying their own replacement functions for character set handling with them,
     and  either  implementing	OS-dependent hacks or doing multiple conversions
     (which is slow and unreliable in case the OS implements encodings	slightly
     different than the terminal emulator).

     The  rxvt-unicode	author	insists that the right way to fix this is in the
     system libraries once and for all, instead of forcing every  app  to  carry
     complete replacements for them :)

     How can I use rxvt-unicode under cygwin?

     rxvt-unicode should compile and run out of the box on cygwin, using the X11
     libraries	that  come  with cygwin. libW11 emulation is no longer supported
     (and makes no sense, either, as it only supported a single font). I  recom-
     mend  starting  the X-server in "-multiwindow" or "-rootless" mode instead,
     which will result in similar look&feel as the old libW11 emulation.

     At the time of this writing, cygwin didn't seem to support  any  multi-byte
     encodings	(you might try "LC_CTYPE=C-UTF-8"), so you are likely limited to
     8-bit encodings.

     Character widths are not correct.

     urxvt uses the system wcwidth function to know the  information  about  the
     width  of	characters,  so  on  systems with incorrect locale data you will
     likely get bad results. Two notorious examples are Solaris 9, where single-
     width characters like U+2514 are reported as double-width,  and  Darwin  8,
     where combining chars are reported having width 1.

     The  solution is to upgrade your system or switch to a better one. A possi-
     bly working workaround is to use a wcwidth implementation like

     http://www.cl.cam.ac.uk/~mgk25/ucs/wcwidth.c

RXVT-UNICODE TECHNICAL REFERENCE
     The rest of this document describes various technical aspects of  rxvt-uni-
     code.  First  the	description  of supported command sequences, followed by
     pixmap support and last by a description  of  all	features  selectable  at
     "configure" time.

     When  some functionality is marked as (insecure mode), then it requires in-
     secure mode to be enabled to work fully, e.g. by  using  the  insecure  re-
     source  or command line switch. As that name implies, a terminal running in
     insecure mode might not be secure against attackers that can  output  arbi-
     trary sequences to the terminal.

   Definitions
     "c" The literal character c (potentially a multi-byte character).

     "C" A single (required) character.

     "Ps"A  single (usually optional) numeric parameter, composed of one or more
	 digits.

     "Pm"A multiple numeric parameter composed of any number of  single  numeric
	 parameters, separated by ";" character(s).

     "Pt"A text parameter composed of printable characters.

   Values
     "ENQ"
	 Enquiry  (Ctrl-E) = Send Device Attributes (DA) request attributes from
	 terminal. See "ESC [ Ps c".

     "BEL"
	 Bell (Ctrl-G)

     "BS"Backspace (Ctrl-H)

     "TAB"
	 Horizontal Tab (HT) (Ctrl-I)

     "LF"Line Feed or New Line (NL) (Ctrl-J)

     "VT"Vertical Tab (Ctrl-K) same as "LF"

     "FF"Form Feed or New Page (NP) (Ctrl-L) same as "LF"

     "CR"Carriage Return (Ctrl-M)

     "SO"Shift Out (Ctrl-N), invokes the G1 character set.  Switch to  Alternate
	 Character Set

     "SI"Shift	In (Ctrl-O), invokes the G0 character set (the default).  Switch
	 to Standard Character Set

     "SP"Space Character

   Escape Sequences
     "ESC # 8"
	 DEC Screen Alignment Test (DECALN)

     "ESC 7"
	 Save Cursor (SC)

     "ESC 8"
	 Restore Cursor

     "ESC ="
	 Application Keypad (SMKX). See also next sequence.

     "ESC >"
	 Normal Keypad (RMKX)

	 Note: numbers or control functions are generated by the numeric  keypad
	 in normal or application mode, respectively (see Key Codes).

     "ESC D"
	 Index (IND)

     "ESC E"
	 Next Line (NEL)

     "ESC H"
	 Tab Set (HTS)

     "ESC M"
	 Reverse Index (RI)

     "ESC N"
	 Single  Shift	Select of G2 Character Set (SS2): affects next character
	 only unimplemented

     "ESC O"
	 Single Shift Select of G3 Character Set (SS3): affects  next  character
	 only unimplemented

     "ESC Z"
	 Obsolete  form  of returns: "ESC [ ? 1 ; 2 C" rxvt-unicode compile-time
	 option

     "ESC c"
	 Full reset (RIS)

     "ESC n"
	 Invoke the G2 Character Set (LS2)

     "ESC o"
	 Invoke the G3 Character Set (LS3)

     "ESC ( C"
	 Designate G0 Character Set (ISO 2022), see below for values of "C".

     "ESC ) C"
	 Designate G1 Character Set (ISO 2022), see below for values of "C".

     "ESC * C"
	 Designate G2 Character Set (ISO 2022), see below for values of "C".

     "ESC + C"
	 Designate G3 Character Set (ISO 2022), see below for values of "C".

     "ESC $ C"
	 Designate Kanji Character Set

	 Where "C" is one of:
	 C = 0	 DEC Special Character and Line Drawing Set
	 C = A	 United Kingdom (UK)
	 C = B	 United States (USASCII)
	 C = <	 Multinational character set unimplemented
	 C = 5	 Finnish character set unimplemented
	 C = C	 Finnish character set unimplemented
	 C = K	 German character set unimplemented

   CSI (Command Sequence Introducer) Sequences
     "ESC [ Ps @"
	 Insert "Ps" (Blank) Character(s) [default: 1] (ICH)

     "ESC [ Ps A"
	 Cursor Up "Ps" Times [default: 1] (CUU)

     "ESC [ Ps B"
	 Cursor Down "Ps" Times [default: 1] (CUD)

     "ESC [ Ps C"
	 Cursor Forward "Ps" Times [default: 1] (CUF)

     "ESC [ Ps D"
	 Cursor Backward "Ps" Times [default: 1] (CUB)

     "ESC [ Ps E"
	 Cursor Down "Ps" Times [default: 1] and to first column

     "ESC [ Ps F"
	 Cursor Up "Ps" Times [default: 1] and to first column

     "ESC [ Ps G"
	 Cursor to Column "Ps" (HPA)

     "ESC [ Ps;Ps H"
	 Cursor Position [row;column] [default: 1;1] (CUP)

     "ESC [ Ps I"
	 Move forward "Ps" tab stops [default: 1]

     "ESC [ Ps J"
	 Erase in Display (ED)
	 Ps = 0   Clear Right and Below (default)
	 Ps = 1   Clear Left and Above
	 Ps = 2   Clear All

     "ESC [ Ps K"
	 Erase in Line (EL)
	 Ps = 0   Clear to Right (default)
	 Ps = 1   Clear to Left
	 Ps = 2   Clear All
	 Ps = 3   Like Ps = 0, but is ignored when wrapped (urxvt extension)

     "ESC [ Ps L"
	 Insert "Ps" Line(s) [default: 1] (IL)

     "ESC [ Ps M"
	 Delete "Ps" Line(s) [default: 1] (DL)

     "ESC [ Ps P"
	 Delete "Ps" Character(s) [default: 1] (DCH)

     "ESC [ Ps;Ps;Ps;Ps;Ps T"
	 Initiate	  .	    unimplemented	  Parameters	     are
	 [func;startx;starty;firstrow;lastrow].

     "ESC [ Ps W"
	 Tabulator functions
	 Ps = 0   Tab Set (HTS)
	 Ps = 2   Tab Clear (TBC), Clear Current Column (default)
	 Ps = 5   Tab Clear (TBC), Clear All

     "ESC [ Ps X"
	 Erase "Ps" Character(s) [default: 1] (ECH)

     "ESC [ Ps Z"
	 Move backward "Ps" [default: 1] tab stops

     "ESC [ Ps '"
	 See "ESC [ Ps G"

     "ESC [ Ps a"
	 See "ESC [ Ps C"

     "ESC [ Ps c"
	 Send  Device  Attributes (DA) "Ps = 0" (or omitted): request attributes
	 from terminal returns: "ESC [ ? 1 ; 2 c" (``I am a VT100 with	Advanced
	 Video Option'')

     "ESC [ Ps d"
	 Cursor to Line "Ps" (VPA)

     "ESC [ Ps e"
	 See "ESC [ Ps A"

     "ESC [ Ps;Ps f"
	 Horizontal and Vertical Position [row;column] (HVP) [default: 1;1]

     "ESC [ Ps g"
	 Tab Clear (TBC)
	 Ps = 0   Clear Current Column (default)
	 Ps = 3   Clear All (TBC)

     "ESC [ Pm h"
	 Set Mode (SM). See "ESC [ Pm l" sequence for description of "Pm".

     "ESC [ Ps i"
	 Printing. See also the "print-pipe" resource.
	 Ps = 0   print screen (MC0)
	 Ps = 4   disable transparent print mode (MC4)
	 Ps = 5   enable transparent print mode (MC5)

     "ESC [ Pm l"
	 Reset Mode (RM)

	 "Ps = 4"
	     h	 Insert Mode (SMIR)
	     l	 Replace Mode (RMIR)
	 "Ps = 20" (partially implemented)
	     h	 Automatic Newline (LNM)
	     l	 Normal Linefeed (LNM)
     "ESC [ Pm m"
	 Character Attributes (SGR)
	 Pm = 0 	    Normal (default)
	 Pm = 1 / 21	    On / Off Bold (bright fg)
	 Pm = 3 / 23	    On / Off Italic
	 Pm = 4 / 24	    On / Off Underline
	 Pm = 5 / 25	    On / Off Slow Blink (bright bg)
	 Pm = 6 / 26	    On / Off Rapid Blink (bright bg)
	 Pm = 7 / 27	    On / Off Inverse
	 Pm = 8 / 27	    On / Off Invisible (NYI)
	 Pm = 30 / 40	    fg/bg Black
	 Pm = 31 / 41	    fg/bg Red
	 Pm = 32 / 42	    fg/bg Green
	 Pm = 33 / 43	    fg/bg Yellow
	 Pm = 34 / 44	    fg/bg Blue
	 Pm = 35 / 45	    fg/bg Magenta
	 Pm = 36 / 46	    fg/bg Cyan
	 Pm = 37 / 47	    fg/bg White
	 Pm = 38;5 / 48;5   set fg/bg to colour #m (ISO 8613-6)
	 Pm = 38;2;R;G;B    set fg to 24-bit colour #RGB (ISO 8613-3)
	 Pm = 48;2;R;G;B    set bg to 24-bit colour #RGB (ISO 8613-3)
	 Pm = 39 / 49	    fg/bg Default
	 Pm = 90 / 100	    fg/bg Bright Black
	 Pm = 91 / 101	    fg/bg Bright Red
	 Pm = 92 / 102	    fg/bg Bright Green
	 Pm = 93 / 103	    fg/bg Bright Yellow
	 Pm = 94 / 104	    fg/bg Bright Blue
	 Pm = 95 / 105	    fg/bg Bright Magenta
	 Pm = 96 / 106	    fg/bg Bright Cyan
	 Pm = 97 / 107	    fg/bg Bright White
	 Pm = 99 / 109	    fg/bg Bright Default

     "ESC [ Ps n"
	 Device Status Report (DSR)
	 Ps = 5   Status Report ESC [ 0 n (``OK'')
	 Ps = 6   Report Cursor Position (CPR) [row;column] as ESC [ r ; c R
	 Ps = 7   Request Display Name (insecure mode)
	 Ps = 8   Request Version Number (place in window title)

     "ESC [ Ps SP q"
	 Set Cursor Style (DECSCUSR)
	 Ps = 0   Blink Block
	 Ps = 1   Blink Block
	 Ps = 2   Steady Block
	 Ps = 3   Blink Underline
	 Ps = 4   Steady Underline
	 Ps = 5   Blink Bar (XTerm)
	 Ps = 6   Steady Bar (XTerm)

     "ESC [ Ps;Ps r"
	 Set Scrolling Region [top;bottom] [default: full size of window] (CSR)

     "ESC [ s"
	 Save Cursor (SC)

     "ESC [ Ps;Pt t"
	 Window Operations
	 Ps = 1      Deiconify (map) window
	 Ps = 2      Iconify window
	 Ps = 3      ESC [ 3 ; X ; Y t Move window to (X|Y)
	 Ps = 4      ESC [ 4 ; H ; W t Resize to WxH pixels
	 Ps = 5      Raise window
	 Ps = 6      Lower window
	 Ps = 7      Refresh screen once
	 Ps = 8      ESC [ 8 ; R ; C t Resize to R rows and C columns
	 Ps = 11     Report window state (responds with Ps = 1 or Ps = 2)
	 Ps = 13     Report window position (responds with Ps = 3)
	 Ps = 14     Report window pixel size (responds with Ps = 4)
	 Ps = 18     Report window text size (responds with Ps = 7)
	 Ps = 19     Currently the same as Ps = 18, but responds with Ps = 9
	 Ps = 20     Reports icon label (ESC ] L NAME 234) (insecure mode)
	 Ps = 21     Reports window title (ESC ] l NAME 234) (insecure mode)
	 Ps = 24..   Set window height to Ps rows

     "ESC [ u"
	 Restore Cursor

     "ESC [ Ps x"
	 Request Terminal Parameters (DECREQTPARM)

   DEC Private Modes
     "ESC [ ? Pm h"
	 DEC Private Mode Set (DECSET)

     "ESC [ ? Pm l"
	 DEC Private Mode Reset (DECRST)

     "ESC [ ? Pm $ p"
	 DEC Private Mode Request (DECRQM)

     "ESC [ ? Pm r"
	 Restore previously saved DEC Private Mode Values.

     "ESC [ ? Pm s"
	 Save DEC Private Mode Values.

     "ESC [ ? Pm t"
	 Toggle DEC Private Mode Values (rxvt extension).

     where

     "Pm = 1" (DECCKM)
	 h   Application Cursor Keys
	 l   Normal Cursor Keys
     "Pm = 2" (DECANM)
	 h   Enter VT52 mode
	 l   Enter VT52 mode
     "Pm = 3" (DECCOLM)
	 h   132 Column Mode
	 l   80 Column Mode
     "Pm = 4" (DECSCLM)
	 h   Smooth (Slow) Scroll
	 l   Jump (Fast) Scroll
     "Pm = 5" (DECSCNM)
	 h   Reverse Video
	 l   Normal Video
     "Pm = 6" (DECOM)
	 h   Origin Mode
	 l   Normal Cursor Mode
     "Pm = 7" (DECAWM)
	 h   Wraparound Mode
	 l   No Wraparound Mode
     "Pm = 8" (DECARM) unimplemented
	 h   Auto-repeat Keys
	 l   No Auto-repeat Keys
     "Pm = 9" (X10 XTerm mouse protocol)
	 h   Send Mouse X & Y on button press.
	 l   No mouse reporting.
     "Pm = 12" (AT&T 610, XTerm)
	 h   Blinking cursor (cvvis)
	 l   Steady cursor (cnorm)
     "Pm = 25" (DECTCEM)
	 h   Visible cursor {cnorm/cvvis}
	 l   Invisible cursor {civis}
     "Pm = 30" (rxvt)
	 h   scrollBar visible
	 l   scrollBar invisible
     "Pm = 35" (rxvt)
	 h   Allow XTerm Shift+key sequences
	 l   Disallow XTerm Shift+key sequences
     "Pm = 38" unimplemented
	 Enter Tektronix Mode (DECTEK)

     "Pm = 40"
	 h   Allow 80/132 Mode
	 l   Disallow 80/132 Mode
     "Pm = 44" unimplemented
	 h   Turn On Margin Bell
	 l   Turn Off Margin Bell
     "Pm = 45" unimplemented
	 h   Reverse-wraparound Mode
	 l   No Reverse-wraparound Mode
     "Pm = 46" unimplemented
     "Pm = 47"
	 h   Use Alternate Screen Buffer
	 l   Use Normal Screen Buffer

     "Pm = 66" (DECNKM)
	 h   Application Keypad (DECKPAM/DECPAM) == ESC =
	 l   Normal Keypad (DECKPNM/DECPNM) == ESC >
     "Pm = 67" (DECBKM)
	 h   Backspace key sends BS
	 l   Backspace key sends DEL
     "Pm = 1000" (X11 XTerm mouse protocol)
	 h   Send Mouse X & Y on button press and release.
	 l   No mouse reporting.
     "Pm = 1001" (X11 XTerm) unimplemented
	 h   Use Hilite Mouse Tracking.
	 l   No mouse reporting.
     "Pm = 1002" (X11 XTerm cell motion mouse tracking)
	 h   Send Mouse X & Y on button press and release, and motion with a button pressed.
	 l   No mouse reporting.
     "Pm = 1003" (X11 XTerm all motion mouse tracking)
	 h   Send Mouse X & Y on button press and release, and motion.
	 l   No mouse reporting.
     "Pm = 1004" (X11 XTerm focus in/focus out events)
	 h   Send Mouse focus in/focus out events.
	 l   Don't send focus events.
     "Pm = 1005" (X11 XTerm UTF-8 mouse mode) (Compile frills)
	 Try  to avoid this mode, it doesn't work sensibly in non-UTF-8 locales.
	 Use mode 1015 instead.

	 Unlike XTerm, coordinates larger than 2015 will work fine.
	 h   Enable mouse coordinates in locale-specific encoding.
	 l   Disable mouse coordinates in locale-specific encoding.

     "Pm = 1006" (X11 XTerm SGR mouse mode) (Compile frills)
	 h   Enable xterm SGR mouse coordinate reporting.
	 l   Disable xterm SGR mouse coordinate reporting.
     "Pm = 1010" (rxvt)
	 h   Don't scroll to bottom on TTY output
	 l   Scroll to bottom on TTY output
     "Pm = 1011" (rxvt)
	 h   Scroll to bottom when a key is pressed
	 l   Don't scroll to bottom when a key is pressed
     "Pm = 1015" (rxvt-unicode) (Compile frills)
	 h   Enable urxvt mouse coordinate reporting.
	 l   Disable urxvt mouse coordinate reporting.
     "Pm = 1021" (rxvt)
	 h   Bold/italic implies high intensity (see option -is)
	 l   Font styles have no effect on intensity (Compile styles)
     "Pm = 1047" (X11 XTerm alternate screen buffer)
	 h   Use Alternate Screen Buffer
	 l   Use Normal Screen Buffer - clear Alternate Screen Buffer if returning from it
     "Pm = 1048" (X11 XTerm alternate DECSC)
	 h   Save cursor position
	 l   Restore cursor position
     "Pm = 1049" (X11 XTerm 1047 + 1048)
	 h   Use Alternate Screen Buffer - clear Alternate Screen Buffer if switching to it
	 l   Use Normal Screen Buffer
     "Pm = 2004" (X11 XTerm bracketed paste mode)
	 h   Enable bracketed paste mode - prepend / append to the pasted text the control sequences ESC [ 200 ~ / ESC [ 201 ~
	 l   Disable bracketed paste mode

   XTerm Operating System Commands
     "ESC ] Ps;Pt ST"
	 Set XTerm Parameters. 8-bit ST: 0x9c, 7-bit ST sequence: ESC  \  (0x1b,
	 0x5c), backwards compatible terminator BEL (0x07) is also accepted. any
	 octet can be escaped by prefixing it with SYN (0x16, ^V).

	 Many  of  these settings can be queried by specifying "?" as parameter,
	 but this requires insecure mode to be enabled for most of these.
	 Ps = 0     Change Icon Name and Window Title to Pt
	 Ps = 1     Change Icon Name to Pt
	 Ps = 2     Change Window Title to Pt
	 Ps = 3     If Pt starts with a ?, query the (STRING) property of the window and return it (insecure mode). If Pt contains a =, set the named property to the given value, else delete the specified property.
	 Ps = 4     Pt is a semi-colon separated sequence of one or more semi-colon separated number/name pairs, where number is an index to a colour and name is the name of a colour. Each pair causes the numbered colour to be changed to name. Numbers 0-7 corresponds to low-intensity (normal) colours and 8-15 corresponds to high-intensity colours. 0=black, 1=red, 2=green, 3=yellow, 4=blue, 5=magenta, 6=cyan, 7=white
	 Ps = 10    Change colour of text foreground to Pt
	 Ps = 11    Change colour of text background to Pt
	 Ps = 12    Change colour of text cursor foreground to Pt
	 Ps = 13    Change colour of mouse foreground to Pt
	 Ps = 17    Change background colour of highlight characters to Pt
	 Ps = 19    Change foreground colour of highlight characters to Pt
	 Ps = 20    Change background image to Pt (see the urxvt-background extension documentation)
	 Ps = 39    Change default foreground colour to Pt. [deprecated, use 10]
	 Ps = 46    Change Log File to Pt unimplemented
	 Ps = 49    Change default background colour to Pt. [deprecated, use 11]
	 Ps = 50    Set fontset to Pt, with the following special values of Pt (rxvt) #+n change up n #-n change down n if n is missing of 0, a value of 1 is used empty change to font0 n change to font n
	 Ps = 55    Log all scrollback buffer and all of screen to Pt [disabled]
	 Ps = 701   Change current locale to Pt, or, if Pt is ?, return the current locale (insecure mode, Compile frills).
	 Ps = 702   Request version if Pt is ?, returning rxvt-unicode, the resource name, the major and minor version numbers, e.g. ESC ] 702 ; rxvt-unicode ; urxvt ; 7 ; 4 ST.
	 Ps = 704   Change colour of italic characters to Pt
	 Ps = 705   Change background tint color to Pt (see the urxvt-background extension documentation)
	 Ps = 706   Change colour of bold characters to Pt
	 Ps = 707   Change colour of underlined characters to Pt
	 Ps = 708   Change colour of the border to Pt
	 Ps = 710   Set normal fontset to Pt. Same as Ps = 50.
	 Ps = 711   Set bold fontset to Pt. Similar to Ps = 50 (Compile styles).
	 Ps = 712   Set italic fontset to Pt. Similar to Ps = 50 (Compile styles).
	 Ps = 713   Set bold-italic fontset to Pt. Similar to Ps = 50 (Compile styles).
	 Ps = 720   Move viewing window up by Pt lines, or clear scrollback buffer if Pt = 0 (Compile frills).
	 Ps = 721   Move viewing window down by Pt lines, or clear scrollback buffer if Pt = 0 (Compile frills).
	 Ps = 776   (urxvt 9.29) Returns info about the character cell size, replies with ESC ] 776 ; cell-width ; cell-height ; font-ascent ST
	 Ps = 777   Call the perl extension with the given string, which should be of the form extension;parameters (Compile perl).

Mouse Reporting
     When mouse reporting is enabled and none of the extended mouse modes (1005,
     1006, 1015) is active, urxvt sends the following sequence on a mouse event:

     "ESC [ M <b> <x> <y>"

     The lower 2 bits of "<b>" indicate the button:

     Button = "(<b> - SPACE) & 3"
	 0   Button1 pressed
	 1   Button2 pressed
	 2   Button3 pressed
	 3   button released (X11 mouse report)

     The upper bits of "<b>" indicate the modifiers when the button was  pressed
     and are added together (X11 mouse report only):

     State = "(<b> - SPACE) & ~3"
	 4    Shift
	 8    Meta
	 16   Control
	 32   Motion Notify
	 32   Double Click (rxvt extension), disabled by default
	 64   Button1 is actually Button4, Button2 is actually Button5 etc.

     "x"  and  "y" encode the coordinates (1|1 is the upper left corner, just as
     with cursor positioning):

     Col = "<x> - SPACE"
     Row = "<y> - SPACE"

     The parameters include an offset of 32 to ensure that  they  are  printable
     characters.

     Example: Shift-Button-1 press at top row, column 80.

	ESC [ M $ p !

     The largest coordinate that can be represented in this encoding is 223. The
     range  can  be  extended  by  using  one of the extended mouse modes, which
     should be enabled before enabling mouse reporting,  for  semi-obvious  rea-
     sons.

   Mode 1005
     If mode 1005 is active, urxvt sends the sequence

     "ESC [ M <b> <x> <y>"

     with the coordinates provided as characters in locale-encoding instead of 1
     byte  octets.  This  mode	does  not work sensibly in non-UTF-8 locales and
     should therefore be avoided.

   Mode 1006
     If mode 1006 is active, urxvt sends the following sequences:

     "ESC [ < <b>;<x>;<y> M"
	 button press and motion

     "ESC [ < <b>;<x>;<y> m"
	 button release

     where the parameters are provided as decimal numbers instead of octets  and
     do not include an offset of 32.

     The  lower  2  bits  of "b" encode the button number also on button release
     (instead of the value 3). The final character of  the  sequence  (M  or  m)
     specifies the event type (press/motion or release).

     Example: Shift-Button-1 press at top row, column 80.

	ESC [ < 4 ; 80 ; 1 M

   Mode 1015
     If mode 1015 is active, urxvt sends the sequence

     "ESC [ <b>;<x>;<y> M"

     where  the parameters are provided as decimal numbers instead of octets and
     only "b" includes an offset of 32.

     Example: Shift-Button-1 press at top row, column 80.

	ESC [ 36 ; 80 ; 1 M

Key Codes
     Note: Shift + F1-F10 generates F11-F20

     For the keypad, use Shift to temporarily toggle Application Keypad mode and
     use Num_Lock to override Application Keypad mode, i.e. if	Num_Lock  is  on
     the  keypad  is  in  normal  mode.  Also note that the values of BackSpace,
     Delete may have been compiled differently on your system.
		    Normal	 Shift	       Control	    Ctrl+Shift
     Tab	    ^I		 ESC [ Z       ^I	    ESC [ Z
     BackSpace	    ^?		 ^?	       ^H	    ^H
     Find	    ESC [ 1 ~	 ESC [ 1 $     ESC [ 1 ^    ESC [ 1 @
     Insert	    ESC [ 2 ~	 paste	       ESC [ 2 ^    ESC [ 2 @
     Execute	    ESC [ 3 ~	 ESC [ 3 $     ESC [ 3 ^    ESC [ 3 @
     Select	    ESC [ 4 ~	 ESC [ 4 $     ESC [ 4 ^    ESC [ 4 @
     Prior	    ESC [ 5 ~	 scroll-up     ESC [ 5 ^    ESC [ 5 @
     Next	    ESC [ 6 ~	 scroll-down   ESC [ 6 ^    ESC [ 6 @
     Home	    ESC [ 7 ~	 ESC [ 7 $     ESC [ 7 ^    ESC [ 7 @
     End	    ESC [ 8 ~	 ESC [ 8 $     ESC [ 8 ^    ESC [ 8 @
     Delete	    ESC [ 3 ~	 ESC [ 3 $     ESC [ 3 ^    ESC [ 3 @
     F1 	    ESC [ 11 ~	 ESC [ 23 ~    ESC [ 11 ^   ESC [ 23 ^
     F2 	    ESC [ 12 ~	 ESC [ 24 ~    ESC [ 12 ^   ESC [ 24 ^
     F3 	    ESC [ 13 ~	 ESC [ 25 ~    ESC [ 13 ^   ESC [ 25 ^
     F4 	    ESC [ 14 ~	 ESC [ 26 ~    ESC [ 14 ^   ESC [ 26 ^
     F5 	    ESC [ 15 ~	 ESC [ 28 ~    ESC [ 15 ^   ESC [ 28 ^
     F6 	    ESC [ 17 ~	 ESC [ 29 ~    ESC [ 17 ^   ESC [ 29 ^
     F7 	    ESC [ 18 ~	 ESC [ 31 ~    ESC [ 18 ^   ESC [ 31 ^
     F8 	    ESC [ 19 ~	 ESC [ 32 ~    ESC [ 19 ^   ESC [ 32 ^
     F9 	    ESC [ 20 ~	 ESC [ 33 ~    ESC [ 20 ^   ESC [ 33 ^
     F10	    ESC [ 21 ~	 ESC [ 34 ~    ESC [ 21 ^   ESC [ 34 ^
     F11	    ESC [ 23 ~	 ESC [ 23 $    ESC [ 23 ^   ESC [ 23 @
     F12	    ESC [ 24 ~	 ESC [ 24 $    ESC [ 24 ^   ESC [ 24 @
     F13	    ESC [ 25 ~	 ESC [ 25 $    ESC [ 25 ^   ESC [ 25 @
     F14	    ESC [ 26 ~	 ESC [ 26 $    ESC [ 26 ^   ESC [ 26 @
     F15 (Help)     ESC [ 28 ~	 ESC [ 28 $    ESC [ 28 ^   ESC [ 28 @
     F16 (Menu)     ESC [ 29 ~	 ESC [ 29 $    ESC [ 29 ^   ESC [ 29 @
     F17	    ESC [ 31 ~	 ESC [ 31 $    ESC [ 31 ^   ESC [ 31 @
     F18	    ESC [ 32 ~	 ESC [ 32 $    ESC [ 32 ^   ESC [ 32 @
     F19	    ESC [ 33 ~	 ESC [ 33 $    ESC [ 33 ^   ESC [ 33 @
     F20	    ESC [ 34 ~	 ESC [ 34 $    ESC [ 34 ^   ESC [ 34 @
							    Application
     Up 	    ESC [ A	 ESC [ a       ESC O a	    ESC O A
     Down	    ESC [ B	 ESC [ b       ESC O b	    ESC O B
     Right	    ESC [ C	 ESC [ c       ESC O c	    ESC O C
     Left	    ESC [ D	 ESC [ d       ESC O d	    ESC O D
     KP_Enter	    ^M					    ESC O M
     KP_F1	    ESC O P				    ESC O P
     KP_F2	    ESC O Q				    ESC O Q
     KP_F3	    ESC O R				    ESC O R
     KP_F4	    ESC O S				    ESC O S
     KP_Multiply    *					    ESC O j
     KP_Add	    +					    ESC O k
     KP_Separator   ,					    ESC O l
     KP_Subtract    -					    ESC O m
     KP_Decimal     .					    ESC O n
     KP_Divide	    /					    ESC O o
     KP_0	    0					    ESC O p
     KP_1	    1					    ESC O q
     KP_2	    2					    ESC O r
     KP_3	    3					    ESC O s
     KP_4	    4					    ESC O t
     KP_5	    5					    ESC O u
     KP_6	    6					    ESC O v
     KP_7	    7					    ESC O w
     KP_8	    8					    ESC O x
     KP_9	    9					    ESC O y

CONFIGURE OPTIONS
     General hint: if you get compile errors,  then  likely  your  configuration
     hasn't  been  tested well. Either try with "--enable-everything" or use the
     default configuration (i.e. no "--enable-xxx" or "--disable-xxx" switches).
     Of course, you should always report when a combination doesn't work, so  it
     can be fixed. Marc Lehmann <rxvt@schmorp.de>.

     All

     --enable-everything
	 Add  (or  remove)  support  for  all  non-multichoice options listed in
	 "./configure  --help",  except   for	"--enable-assert"   and   "--en-
	 able-256-color".

	 You  can  specify this and then disable options you do not like by fol-
	 lowing this with the appropriate "--disable-..." arguments, or you  can
	 start with a minimal configuration by specifying "--disable-everything"
	 and than adding just the "--enable-..." arguments you want.

     --enable-xft (default: on)
	 Add  support  for Xft (anti-aliased, among others) fonts. Xft fonts are
	 slower and require lots of memory, but as long as you don't  use  them,
	 you don't pay for them.

     --enable-font-styles (default: on)
	 Add support for bold, italic and bold italic font styles. The fonts can
	 be set manually or automatically.

     --with-codesets=CS,... (default: all)
	 Compile in support for additional codeset (encoding) groups ("eu", "vn"
	 are  always  compiled	in,  which  includes most 8-bit character sets).
	 These codeset tables are used for driving X11 core fonts, they are  not
	 required for Xft fonts, although having them compiled in lets rxvt-uni-
	 code  choose  replacement  fonts  more intelligently. Compiling them in
	 will make your binary bigger (all of them together cost  about  700kB),
	 but  it  doesn't  increase memory usage unless you use a font requiring
	 one of these encodings.
	 all	  all available codeset groups
	 zh	  common chinese encodings
	 zh_ext   rarely used but very big chinese encodings
	 jp	  common japanese encodings
	 jp_ext   rarely used but big japanese encodings
	 kr	  korean encodings

     --enable-xim (default: on)
	 Add support for XIM (X Input Method) protocol. This allows using alter-
	 native input methods (e.g. kinput2) and will also correctly set up  the
	 input for people using dead keys or compose keys.

     --enable-unicode3 (default: off)
	 Recommended to stay off unless you really need a lot of non-BMP charac-
	 ters.

	 Enable  support  for  direct  storage of unicode characters above 65535
	 (the basic multilingual page). This increases storage requirements  per
	 character  from  2 to 4 bytes. X11 fonts do not yet support these extra
	 characters, but Xft does.

	 Please note that rxvt-unicode can store and display unicode  characters
	 above	65535  even without this flag, but the number of such characters
	 is limited to a few thousand (shared  with  combining	characters,  see
	 next switch).

     --enable-combining (default: on)
	 Enable  automatic  composition  of  combining characters into composite
	 characters. This is required for proper viewing of text  where  accents
	 are  encoded as separate unicode characters. This is done by using pre-
	 composed characters when available or	creating  new  pseudo-characters
	 when no precomposed form exists.

	 Without --enable-unicode3, the number of additional precomposed charac-
	 ters  is  somewhat  limited  (the  6400  private use characters will be
	 (ab-)used). With --enable-unicode3, no practical limit exists.

	 This option will also enable storage (but not	display)  of  characters
	 beyond plane 0 (>65535) when --enable-unicode3 was not specified.

	 The  combining  table	also  contains	entries  for arabic presentation
	 forms, but these are not currently used. Bug me if you want these to be
	 used (and tell me how these are to be used...).

     --enable-fallback[=CLASS] (default: Rxvt)
	 When reading resource settings, also read settings for class CLASS.  To
	 disable resource fallback use --disable-fallback.

     --with-res-name=NAME (default: urxvt)
	 Use  the given name as default application name when reading resources.
	 Specify --with-res-name=rxvt to replace rxvt.

     --with-res-class=CLASS (default: URxvt)
	 Use the given class as  default  application  class  when  reading  re-
	 sources. Specify --with-res-class=Rxvt to replace rxvt.

     --enable-pixbuf (default: on)
	 Add  support  for GDK-PixBuf to be used for background images.  It adds
	 support for many file formats including JPG, PNG, TIFF, GIF, XPM,  BMP,
	 ICO and TGA.

     --enable-startup-notification (default: on)
	 Add  support  for freedesktop startup notifications. This allows window
	 managers to display some kind of progress indicator during startup.

     --enable-transparency (default: on)
	 Add support for using the root pixmap as background to simulate  trans-
	 parency.   Note  that	this  feature  depends	on libXrender and on the
	 availability of the RENDER extension in the X server.

     --enable-fading (default: on)
	 Add support for fading the text when focus is lost.

     --enable-rxvt-scroll (default: on)
	 Add support for the original rxvt scrollbar.

     --enable-next-scroll (default: on)
	 Add support for a NeXT-like scrollbar.

     --enable-xterm-scroll (default: on)
	 Add support for an Xterm-like scrollbar.

     --disable-backspace-key
	 Removes any handling of the backspace key by us - let the X  server  do
	 it.

     --disable-delete-key
	 Removes any handling of the delete key by us - let the X server do it.

     --disable-resources
	 Removes any support for resource checking.

     --disable-swapscreen
	 Remove support for secondary/swap screen.

     --enable-frills (default: on)
	 Add  support for many small features that are not essential but nice to
	 have. Normally you want this, but for very small binaries you may  want
	 to disable this.

	 A  non-exhaustive list of features enabled by "--enable-frills" (possi-
	 bly in combination with other switches) is:

	   MWM-hints
	   EWMH-hints (pid, utf8 names) and protocols (ping)
	   urgency hint
	   separate underline colour (-underlineColor)
	   settable border widths and borderless switch (-w, -b, -bl)
	   visual depth selection (-depth)
	   settable extra linespacing (-lsp)
	   iso-14755 5.1 (basic) support
	   tripleclickwords (-tcw)
	   settable insecure mode (-insecure)
	   keysym remapping support
	   cursor blinking and underline cursor (-bc, -uc)
	   XEmbed support (-embed)
	   user-pty (-pty-fd)
	   hold on exit (-hold)
	   compile in built-in block graphics
	   skip builtin block graphics (-sbg)
	   separate highlight colour (-highlightColor, -highlightTextColor)
	   focus reporting mode (1004).
	   extended mouse reporting modes (1005, 1006 and 1015).
	   visual selection via -visual and -depth.
	   systemd socket activation
	   selectable rewrapmode
	   bracketed paste mode

	 It also enables some non-essential features  otherwise  disabled,  such
	 as:

	   some round-trip time optimisations
	   nearest colour allocation on pseudocolor screens
	   UTF8_STRING support for selection
	   sgr modes 90..97 and 100..107
	   backindex and forwardindex escape sequences
	   view change/zero scrollback escape sequences
	   locale switching escape sequence
	   window op and some xterm/OSC escape sequences
	   rectangular selections
	   trailing space removal for selections
	   verbose X error handling

     --enable-iso14755 (default: on)
	 Enable  extended ISO 14755 support (see urxvt(1)).  Basic support (sec-
	 tion 5.1) is enabled by "--enable-frills", while support for  5.2,  5.3
	 and 5.4 is enabled with this switch.

     --enable-keepscrolling (default: on)
	 Add  support  for  continual scrolling of the display when you hold the
	 mouse button down on a scrollbar arrow.

     --enable-selectionscrolling (default: on)
	 Add support for scrolling when the selection moves to the top or bottom
	 of the screen.

     --enable-mousewheel (default: on)
	 Add support for scrolling via mouse wheel or buttons 4 & 5.

     --enable-slipwheeling (default: on)
	 Add support for continual scrolling (using the mouse wheel as an accel-
	 erator) while the control key is held down.  This option requires --en-
	 able-mousewheel to also be specified.

     --enable-smart-resize (default: off)
	 Add smart growth/shrink behaviour when resizing.  This should keep  the
	 window corner which is closest to a corner of the screen in a fixed po-
	 sition.

     --enable-text-blink (default: on)
	 Add support for blinking text.

     --enable-pointer-blank (default: on)
	 Add support to have the pointer disappear when typing or inactive.

     --enable-perl (default: on)
	 Enable  an  embedded perl interpreter. See the urxvtperl(3) manpage for
	 more info on this feature, or the files in src/perl/ for the extensions
	 that are installed by default.  The perl interpreter that is  used  can
	 be  specified	via the "PERL" environment variable when running config-
	 ure. Even when compiled in, perl will not be initialised when	all  ex-
	 tensions have been disabled "-pe "" --perl-ext-common """, so it should
	 be safe to enable from a resource standpoint.

     --enable-assert (default: off)
	 Enables  the  assertions in the code, normally disabled. This switch is
	 only useful when developing rxvt-unicode.

     --enable-256-color (default: off)
	 Force use of so-called 256 colour mode, to work around  buggy	applica-
	 tions	that  do not support termcap/terminfo, or simply improve support
	 for applications hardcoding the xterm 256 colour table.

	 This switch breaks termcap/terminfo  compatibility  to  "TERM=rxvt-uni-
	 code",  and  consequently sets "TERM" to "rxvt-unicode-256color" by de-
	 fault (doc/etc/ contains termcap/terminfo definitions for both).

	 It also results in higher memory usage and can slow down urxvt dramati-
	 cally when more than six fonts are in use by a terminal instance.

     --with-name=NAME (default: urxvt)
	 Set the basename for the  installed  binaries,  resulting  in	"urxvt",
	 "urxvtd" etc.). Specify "--with-name=rxvt" to replace with "rxvt".

     --with-term=NAME (default: rxvt-unicode)
	 Sets  the  default  "TERM" value that urxvt sets. The default is either
	 "rxvt-unicode" or "rxvt-unicode-256color", as appropriate.

     --with-terminfo=PATH
	 If set, urxvt will set the environment variable "TERMINFO" to the given
	 PATH, which can be useful as a last resort if installing  the	terminfo
	 entries system-wide is not possible.

     --with-x
	 Use the X Window System (pretty much default, eh?).

AUTHORS
     Marc  Lehmann <rxvt@schmorp.de> converted this document to pod and reworked
     it from the original Rxvt documentation,  which  was  done  by  Geoff  Wing
     <gcw@pobox.com>,  who  in	turn  used  the  XTerm	documentation  and other
     sources.

9.31				   2023-01-02				urxvt(7)

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