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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	embedded 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
       sequence	"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
       scrollback 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-unicode 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
       listening 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,
       meaning 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
       systemd.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
       insecure	 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  compiled  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 compiled 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
       encoding	 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  encodings. 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 defined 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 necessarily 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),
       except 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
       descriptions  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
       support,	 or  you  are  unable  to read.	 This method requires that the
       background-setting program sets the _XROOTPMAP_ID  or  ESETROOT_PMAP_ID
       property. Compatible 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
       definition 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
       japanese	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
       example,	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
       antialiasing  (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  disabled 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
       "--enable-text-blink", the blink	attribute will be ignored.

       On  ANSI	 colours, bold/blink attributes	are used to set	high-intensity
       foreground/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	characters 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 japanese/chinese	character, it might choose a japanese font for
       display.	Subsequent japanese characters will use	that font.  Now,  many
       chinese	characters  aren't  represented	in japanese fonts, so when the
       first non-japanese character 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
       runtime	(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   compatibility   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
       selects 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-
       common resource to the empty string, which also keeps rxvt-unicode from
       initialising 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 selection-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
       extensions. 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
       circumstances,  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	during	rlogin	sessions,  it  fails  to  detect  this
       properly.

       You can permanently switch this feature off by disabling	the "readline"
       extension:

	  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  happen  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
       correctly, 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
       compose 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
       international  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
       properly	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
       Backspace = ^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 required	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 typical, 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 correct-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  myself 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 relevant 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
       overwhelmed. 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 normal 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 defaults:

	  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
       keeping	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
       immediately  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 combinations	:->

       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  resource  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
       specifying  resources),	make  sure  you	 understand whether and	why it
       works. If unsure, 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 terminfo 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
       problems	 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 terminal, 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
       systems	still  compile	some programs using the	long-obsoleted termcap
       library (Fedora's bash is one example) and rely on a termcap entry  for
       "rxvt-unicode".

       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,
       generated 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. Needless 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
       distributions 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
       programs	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
       displays	 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 applications	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 interpretation 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
       contains	 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
       encoding,   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
       locale  (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  version, 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 Input	Methods	can avoid some crashes by careful ordering  at
       exit  time.  kinput2  (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 important 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
       behaviour. 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
       "--enable-everything" (less useful, it will be very big due to a	lot of
       encodings 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
       install 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
       carrying	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  recommend  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
       possibly	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-
       unicode.	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
       insecure	mode to	be enabled to work fully, e.g. by using	 the  insecure
       resource	 or  command  line  switch.  As	 that name implies, a terminal
       running in insecure mode	might not be secure against attackers that can
       output arbitrary	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 reasons.

   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
	   "--enable-256-color".

	   You can specify this	and then disable options you do	 not  like  by
	   following  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-unicode 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
	   alternative	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
	   characters.

	   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 precomposed characters	when available or creating new pseudo-
	   characters when no precomposed form exists.

	   Without  --enable-unicode3,	the  number  of	additional precomposed
	   characters 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
	   resources. 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
	   transparency.   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"
	   (possibly 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
	   (section 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
	   accelerator)	while the control  key	is  held  down.	  This	option
	   requires --enable-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 position.

       --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  configure.  Even  when compiled in, perl will	not be
	   initialised	when  all  extensions  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
	   applications	 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-unicode",	   and	  consequently	  sets	  "TERM"    to
	   "rxvt-unicode-256color"    by    default	(doc/etc/     contains
	   termcap/terminfo definitions	for both).

	   It  also  results  in  higher  memory usage and can slow down urxvt
	   dramatically	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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