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Revision 1.108 by root, Tue Jan 31 21:04:56 2006 UTC

…		…
16	=head1 DESCRIPTION	16	=head1 DESCRIPTION
17		17
18	This document contains the FAQ, the RXVT TECHNICAL REFERENCE documenting	18	This document contains the FAQ, the RXVT TECHNICAL REFERENCE documenting
19	all escape sequences, and other background information.	19	all escape sequences, and other background information.
20		20
21	The newest version of this document is	21	The newest version of this document is also available on the World Wide Web at
22	also available on the World Wide Web at
23	L<http://cvs.schmorp.de/browse/*checkout*/rxvt-unicode/doc/rxvt.7.html>.	22	L<http://cvs.schmorp.de/browse/*checkout*/rxvt-unicode/doc/rxvt.7.html>.
24		23
25	=head1 FREQUENTLY ASKED QUESTIONS	24	=head1 RXVT-UNICODE/URXVT FREQUENTLY ASKED QUESTIONS
26		25
27	=over 4
28		26
29	=item The new selection selects pieces that are too big, how can I select	27	=head2 Meta, Features & Commandline Issues
30	single words?
31		28
32	Yes. For example, if you want to select alphanumeric words, you can use	29	=head3 My question isn't answered here, can I ask a human?
33	the following resource:
34		30
35	URxvt.selection.pattern-0: ([[:word:]]+)	31	Before sending me mail, you could go to IRC: C<irc.freenode.net>,
		32	channel C<#rxvt-unicode> has some rxvt-unicode enthusiasts that might be
		33	interested in learning about new and exciting problems (but not FAQs :).
36		34
37	If you click more than twice, the selection will be extended	35	=head3 Does it support tabs, can I have a tabbed rxvt-unicode?
38	more and more.
39		36
40	To get a selection that is very similar to the old code, try this pattern:	37	Beginning with version 7.3, there is a perl extension that implements a
		38	simple tabbed terminal. It is installed by default, so any of these should
		39	give you tabs:
41		40
42	URxvt.selection.pattern-0: ([^"&'()*,;<=>?@[\\\\]^`{|})]+)	41	@@URXVT_NAME@@ -pe tabbed
43		42
44	Please also note that the I<LeftClick Shift-LeftClik> combination also	43	URxvt.perl-ext-common: default,tabbed
45	selects words like the old code.
46		44
47	=item I don't like the new selection/popups/hotkeys/perl, how do I	45	It will also work fine with tabbing functionality of many window managers
48	change/disable it?	46	or similar tabbing programs, and its embedding-features allow it to be
		47	embedded into other programs, as witnessed by F<doc/rxvt-tabbed> or
		48	the upcoming C<Gtk2::URxvt> perl module, which features a tabbed urxvt
		49	(murxvt) terminal as an example embedding application.
49		50
50	You can disable the perl extension completely by setting the	51	=head3 How do I know which rxvt-unicode version I'm using?
51	B<perl-ext-common> resource to the empty string, which also keeps
52	rxvt-unicode from initialising perl, saving memory.
53		52
54	If you only want to disable specific features, you first have to	53	The version number is displayed with the usage (-h). Also the escape
55	identify which perl extension is responsible. For this, read the section	54	sequence C<ESC [ 8 n> sets the window title to the version number. When
56	B<PREPACKAGED EXTENSIONS> in the @@RXVT_NAME@@perl(3) manpage. For	55	using the @@URXVT_NAME@@c client, the version displayed is that of the
57	example, to disable the B<selection-popup> and B<option-popup>, specify	56	daemon.
58	this B<perl-ext-common> resource:
59		57
60	URxvt.perl-ext-common: default,-selection-popup,-option-popup	58	=head3 Rxvt-unicode uses gobs of memory, how can I reduce that?
61		59
62	This will keep the default extensions, but disable the two popup	60	Rxvt-unicode tries to obey the rule of not charging you for something you
63	extensions. Some extensions can also be configured, for example,	61	don't use. One thing you should try is to configure out all settings that
64	scrollback search mode is triggered by B<M-s>. You can move it to any	62	you don't need, for example, Xft support is a resource hog by design,
65	other combination either by setting the B<searchable-scrollback> resource:	63	when used. Compiling it out ensures that no Xft font will be loaded
		64	accidentally when rxvt-unicode tries to find a font for your characters.
66		65
67	URxvt.searchable-scrollback: CM-s	66	Also, many people (me included) like large windows and even larger
		67	scrollback buffers: Without C<--enable-unicode3>, rxvt-unicode will use
		68	6 bytes per screen cell. For a 160x?? window this amounts to almost a
		69	kilobyte per line. A scrollback buffer of 10000 lines will then (if full)
		70	use 10 Megabytes of memory. With C<--enable-unicode3> it gets worse, as
		71	rxvt-unicode then uses 8 bytes per screen cell.
68		72
		73	=head3 How can I start @@URXVT_NAME@@d in a race-free way?
		74
		75	Try C<@@URXVT_NAME@@d -f -o>, which tells @@URXVT_NAME@@d to open the
		76	display, create the listening socket and then fork.
		77
		78	=head3 How do I distinguish wether I'm running rxvt-unicode or a regular xterm? I need this to decide about setting colors etc.
		79
		80	The original rxvt and rxvt-unicode always export the variable "COLORTERM",
		81	so you can check and see if that is set. Note that several programs, JED,
		82	slrn, Midnight Commander automatically check this variable to decide
		83	whether or not to use color.
		84
		85	=head3 How do I set the correct, full IP address for the DISPLAY variable?
		86
		87	If you've compiled rxvt-unicode with DISPLAY_IS_IP and have enabled
		88	insecure mode then it is possible to use the following shell script
		89	snippets to correctly set the display. If your version of rxvt-unicode
		90	wasn't also compiled with ESCZ_ANSWER (as assumed in these snippets) then
		91	the COLORTERM variable can be used to distinguish rxvt-unicode from a
		92	regular xterm.
		93
		94	Courtesy of Chuck Blake <cblake@BBN.COM> with the following shell script
		95	snippets:
		96
		97	# Bourne/Korn/POSIX family of shells:
		98	[ ${TERM:-foo} = foo ] && TERM=xterm # assume an xterm if we don't know
		99	if [ ${TERM:-foo} = xterm ]; then
		100	stty -icanon -echo min 0 time 15 # see if enhanced rxvt or not
		101	echo -n '^[Z'
		102	read term_id
		103	stty icanon echo
		104	if [ ""${term_id} = '^[[?1;2C' -a ${DISPLAY:-foo} = foo ]; then
		105	echo -n '^[[7n' # query the rxvt we are in for the DISPLAY string
		106	read DISPLAY # set it in our local shell
		107	fi
		108	fi
		109
		110	=head3 How do I compile the manual pages on my own?
		111
		112	You need to have a recent version of perl installed as F</usr/bin/perl>,
		113	one that comes with F<pod2man>, F<pod2text> and F<pod2html>. Then go to
		114	the doc subdirectory and enter C<make alldoc>.
		115
69	=item Isn't rxvt supposed to be small? Don't all those features bloat?	116	=head3 Isn't rxvt-unicode supposed to be small? Don't all those features bloat?
70		117
71	I often get asked about this, and I think, no, they didn't cause extra	118	I often get asked about this, and I think, no, they didn't cause extra
72	bloat. If you compare a minimal rxvt and a minimal urxvt, you can see	119	bloat. If you compare a minimal rxvt and a minimal urxvt, you can see
73	that the urxvt binary is larger (due to some encoding tables always being	120	that the urxvt binary is larger (due to some encoding tables always being
74	compiled in), but it actually uses less memory (RSS) after startup. Even	121	compiled in), but it actually uses less memory (RSS) after startup. Even
…		…
78		125
79	text data bss drs rss filename	126	text data bss drs rss filename
80	98398 1664 24 15695 1824 rxvt --disable-everything	127	98398 1664 24 15695 1824 rxvt --disable-everything
81	188985 9048 66616 18222 1788 urxvt --disable-everything	128	188985 9048 66616 18222 1788 urxvt --disable-everything
82		129
83	When you C<--enable-everything> (which _is_ unfair, as this involves xft	130	When you C<--enable-everything> (which I<is> unfair, as this involves xft
84	and full locale/XIM support which are quite bloaty inside libX11 and my	131	and full locale/XIM support which are quite bloaty inside libX11 and my
85	libc), the two diverge, but not unreasnobaly so.	132	libc), the two diverge, but not unreasnobaly so.
86		133
87	text data bss drs rss filename	134	text data bss drs rss filename
88	163431 2152 24 20123 2060 rxvt --enable-everything	135	163431 2152 24 20123 2060 rxvt --enable-everything
…		…
106	(21152k + extra 4204k in separate processes) or konsole (22200k + extra	153	(21152k + extra 4204k in separate processes) or konsole (22200k + extra
107	43180k in daemons that stay around after exit, plus half a minute of	154	43180k in daemons that stay around after exit, plus half a minute of
108	startup time, including the hundreds of warnings it spits out), it fares	155	startup time, including the hundreds of warnings it spits out), it fares
109	extremely well *g*.	156	extremely well *g*.
110		157
111	=item Why C++, isn't that unportable/bloated/uncool?	158	=head3 Why C++, isn't that unportable/bloated/uncool?
112		159
113	Is this a question? :) It comes up very often. The simple answer is: I had	160	Is this a question? :) It comes up very often. The simple answer is: I had
114	to write it, and C++ allowed me to write and maintain it in a fraction	161	to write it, and C++ allowed me to write and maintain it in a fraction
115	of the time and effort (which is a scarce resource for me). Put even	162	of the time and effort (which is a scarce resource for me). Put even
116	shorter: It simply wouldn't exist without C++.	163	shorter: It simply wouldn't exist without C++.
…		…
140	/lib64/ld-linux-x86-64.so.2 (0x00002aaaaaaab000)	187	/lib64/ld-linux-x86-64.so.2 (0x00002aaaaaaab000)
141		188
142	No large bloated libraries (of course, none were linked in statically),	189	No large bloated libraries (of course, none were linked in statically),
143	except maybe libX11 :)	190	except maybe libX11 :)
144		191
145	=item Does it support tabs, can I have a tabbed rxvt-unicode?
146		192
147	rxvt-unicode does not directly support tabs. It will work fine with	193	=head2 Rendering, Font & Look and Feel Issues
148	tabbing functionality of many window managers or similar tabbing programs,
149	and its embedding-features allow it to be embedded into other programs,
150	as witnessed by F<doc/rxvt-tabbed> or the upcoming C<Gtk2::URxvt> perl
151	module, which features a tabbed urxvt (murxvt) terminal as an example
152	embedding application.
153		194
154	=item How do I know which rxvt-unicode version I'm using?	195	=head3 I can't get transparency working, what am I doing wrong?
155		196
156	The version number is displayed with the usage (-h). Also the escape	197	First of all, transparency isn't officially supported in rxvt-unicode, so
157	sequence C<ESC [ 8 n> sets the window title to the version number. When	198	you are mostly on your own. Do not bug the author about it (but you may
158	using the @@RXVT_NAME@@c client, the version displayed is that of the	199	bug everybody else). Also, if you can't get it working consider it a rite
159	daemon.	200	of passage: ... and you failed.
160		201
161	=item I am using Debian GNU/Linux and have a problem...	202	Here are four ways to get transparency. B<Do> read the manpage and option
		203	descriptions for the programs mentioned and rxvt-unicode. Really, do it!
162		204
163	The Debian GNU/Linux package of rxvt-unicode in sarge contains large	205	1. Use inheritPixmap:
164	patches that considerably change the behaviour of rxvt-unicode (but
165	unfortunately this notice has been removed). Before reporting a bug to
166	the original rxvt-unicode author please download and install the genuine
167	version (L<http://software.schmorp.de#rxvt-unicode>) and try to reproduce
168	the problem. If you cannot, chances are that the problems are specific to
169	Debian GNU/Linux, in which case it should be reported via the Debian Bug
170	Tracking System (use C<reportbug> to report the bug).
171		206
172	For other problems that also affect the Debian package, you can and	207	Esetroot wallpaper.jpg
173	probably should use the Debian BTS, too, because, after all, it's also a	208	@@URXVT_NAME@@ -ip -tint red -sh 40
174	bug in the Debian version and it serves as a reminder for other users that
175	might encounter the same issue.
176		209
177	=item I am maintaining rxvt-unicode for distribution/OS XXX, any	210	That works. If you think it doesn't, you lack transparency and tinting
178	recommendation?	211	support, or you are unable to read.
179		212
180	You should build one binary with the default options. F<configure>	213	2. Use a simple pixmap and emulate pseudo-transparency. This enables you
181	now enables most useful options, and the trend goes to making them	214	to use effects other than tinting and shading: Just shade/tint/whatever
182	runtime-switchable, too, so there is usually no drawback to enbaling them,	215	your picture with gimp or any other tool:
183	except higher disk and possibly memory usage. The perl interpreter should
184	be enabled, as important functionality (menus, selection, likely more in
185	the future) depends on it.
186		216
187	You should not overwrite the C<perl-ext-common> snd C<perl-ext> resources	217	convert wallpaper.jpg -blur 20x20 -modulate 30 background.xpm
188	system-wide (except maybe with C<defaults>). This will result in useful	218	@@URXVT_NAME@@ -pixmap background.xpm -pe automove-background
189	behaviour. If your distribution aims at low memory, add an empty
190	C<perl-ext-common> resource to the app-defaults file. This will keep the
191	perl interpreter disabled until the user enables it.
192		219
193	If you can/want build more binaries, I recommend building a minimal	220	That works. If you think it doesn't, you lack XPM and Perl support, or you
194	one with C<--disable-everything> (very useful) and a maximal one with	221	are unable to read.
195	C<--enable-everything> (less useful, it will be very big due to a lot of
196	encodings built-in that increase download times and are rarely used).
197		222
198	=item I need to make it setuid/setgid to support utmp/ptys on my OS, is this safe?	223	3. Use an ARGB visual:
199		224
200	It should be, starting with release 7.1. You are encouraged to properly	225	@@URXVT_NAME@@ -depth 32 -fg grey90 -bg rgba:0000/0000/4444/cccc
201	install urxvt with privileges necessary for your OS now.
202		226
203	When rxvt-unicode detects that it runs setuid or setgid, it will fork	227	This requires XFT support, and the support of your X-server. If that
204	into a helper process for privileged operations (pty handling on some	228	doesn't work for you, blame Xorg and Keith Packard. ARGB visuals aren't
205	systems, utmp/wtmp/lastlog handling on others) and drop privileges	229	there yet, no matter what they claim. Rxvt-Unicode contains the neccessary
206	immediately. This is much safer than most other terminals that keep	230	bugfixes and workarounds for Xft and Xlib to make it work, but that
207	privileges while running (but is more relevant to urxvt, as it contains	231	doesn't mean that your WM has the required kludges in place.
208	things as perl interpreters, which might be "helpful" to attackers).
209		232
210	This forking is done as the very first within main(), which is very early	233	4. Use xcompmgr and let it do the job:
211	and reduces possible bugs to initialisation code run before main(), or
212	things like the dynamic loader of your system, which should result in very
213	little risk.
214		234
		235	xprop -frame -f _NET_WM_WINDOW_OPACITY 32c \
		236	-set _NET_WM_WINDOW_OPACITY 0xc0000000
		237
		238	Then click on a window you want to make transparent. Replace C<0xc0000000>
		239	by other values to change the degree of opacity. If it doesn't work and
		240	your server crashes, you got to keep the pieces.
		241
		242	=head3 Why do some chinese characters look so different than others?
		243
		244	This is because there is a difference between script and language --
		245	rxvt-unicode does not know which language the text that is output is,
		246	as it only knows the unicode character codes. If rxvt-unicode first
		247	sees a japanese/chinese character, it might choose a japanese font for
		248	display. Subsequent japanese characters will use that font. Now, many
		249	chinese characters aren't represented in japanese fonts, so when the first
		250	non-japanese character comes up, rxvt-unicode will look for a chinese font
		251	-- unfortunately at this point, it will still use the japanese font for
		252	chinese characters that are also in the japanese font.
		253
		254	The workaround is easy: just tag a chinese font at the end of your font
		255	list (see the previous question). The key is to view the font list as
		256	a preference list: If you expect more japanese, list a japanese font
		257	first. If you expect more chinese, put a chinese font first.
		258
		259	In the future it might be possible to switch language preferences at
		260	runtime (the internal data structure has no problem with using different
		261	fonts for the same character at the same time, but no interface for this
		262	has been designed yet).
		263
		264	Until then, you might get away with switching fonts at runtime (see L<Can
		265	I switch the fonts at runtime?> later in this document).
		266
		267	=head3 Why does rxvt-unicode sometimes leave pixel droppings?
		268
		269	Most fonts were not designed for terminal use, which means that character
		270	size varies a lot. A font that is otherwise fine for terminal use might
		271	contain some characters that are simply too wide. Rxvt-unicode will avoid
		272	these characters. For characters that are just "a bit" too wide a special
		273	"careful" rendering mode is used that redraws adjacent characters.
		274
		275	All of this requires that fonts do not lie about character sizes,
		276	however: Xft fonts often draw glyphs larger than their acclaimed bounding
		277	box, and rxvt-unicode has no way of detecting this (the correct way is to
		278	ask for the character bounding box, which unfortunately is wrong in these
		279	cases).
		280
		281	It's not clear (to me at least), wether this is a bug in Xft, freetype,
		282	or the respective font. If you encounter this problem you might try using
		283	the C<-lsp> option to give the font more height. If that doesn't work, you
		284	might be forced to use a different font.
		285
		286	All of this is not a problem when using X11 core fonts, as their bounding
		287	box data is correct.
		288
		289	=head3 How can I keep rxvt-unicode from using reverse video so much?
		290
		291	First of all, make sure you are running with the right terminal settings
		292	(C<TERM=rxvt-unicode>), which will get rid of most of these effects. Then
		293	make sure you have specified colours for italic and bold, as otherwise
		294	rxvt-unicode might use reverse video to simulate the effect:
		295
		296	URxvt.colorBD: white
		297	URxvt.colorIT: green
		298
		299	=head3 Some programs assume totally weird colours (red instead of blue), how can I fix that?
		300
		301	For some unexplainable reason, some rare programs assume a very weird
		302	colour palette when confronted with a terminal with more than the standard
		303	8 colours (rxvt-unicode supports 88). The right fix is, of course, to fix
		304	these programs not to assume non-ISO colours without very good reasons.
		305
		306	In the meantime, you can either edit your C<rxvt-unicode> terminfo
		307	definition to only claim 8 colour support or use C<TERM=rxvt>, which will
		308	fix colours but keep you from using other rxvt-unicode features.
		309
		310	=head3 Can I switch the fonts at runtime?
		311
		312	Yes, using an escape sequence. Try something like this, which has the same
		313	effect as using the C<-fn> switch, and takes effect immediately:
		314
		315	printf '\e]50;%s\007' "9x15bold,xft:Kochi Gothic"
		316
		317	This is useful if you e.g. work primarily with japanese (and prefer a
		318	japanese font), but you have to switch to chinese temporarily, where
		319	japanese fonts would only be in your way.
		320
		321	You can think of this as a kind of manual ISO-2022 switching.
		322
		323	=head3 Why do italic characters look as if clipped?
		324
		325	Many fonts have difficulties with italic characters and hinting. For
		326	example, the otherwise very nicely hinted font C<xft:Bitstream Vera Sans
		327	Mono> completely fails in it's italic face. A workaround might be to
		328	enable freetype autohinting, i.e. like this:
		329
		330	URxvt.italicFont: xft:Bitstream Vera Sans Mono:italic:autohint=true
		331	URxvt.boldItalicFont: xft:Bitstream Vera Sans Mono:bold:italic:autohint=true
		332
		333	=head3 Can I speed up Xft rendering somehow?
		334
		335	Yes, the most obvious way to speed it up is to avoid Xft entirely, as
		336	it is simply slow. If you still want Xft fonts you might try to disable
		337	antialiasing (by appending C<:antialias=false>), which saves lots of
		338	memory and also speeds up rendering considerably.
		339
		340	=head3 Rxvt-unicode doesn't seem to anti-alias its fonts, what is wrong?
		341
		342	Rxvt-unicode will use whatever you specify as a font. If it needs to
		343	fall back to it's default font search list it will prefer X11 core
		344	fonts, because they are small and fast, and then use Xft fonts. It has
		345	antialiasing disabled for most of them, because the author thinks they
		346	look best that way.
		347
		348	If you want antialiasing, you have to specify the fonts manually.
		349
		350	=head3 What's with this bold/blink stuff?
		351
		352	If no bold colour is set via C<colorBD:>, bold will invert text using the
		353	standard foreground colour.
		354
		355	For the standard background colour, blinking will actually make the
		356	text blink when compiled with C<--enable-blinking>. with standard
		357	colours. Without C<--enable-blinking>, the blink attribute will be
		358	ignored.
		359
		360	On ANSI colours, bold/blink attributes are used to set high-intensity
		361	foreground/background colors.
		362
		363	color0-7 are the low-intensity colors.
		364
		365	color8-15 are the corresponding high-intensity colors.
		366
		367	=head3 I don't like the screen colors. How do I change them?
		368
		369	You can change the screen colors at run-time using F<~/.Xdefaults>
		370	resources (or as long-options).
		371
		372	Here are values that are supposed to resemble a VGA screen,
		373	including the murky brown that passes for low-intensity yellow:
		374
		375	URxvt.color0: #000000
		376	URxvt.color1: #A80000
		377	URxvt.color2: #00A800
		378	URxvt.color3: #A8A800
		379	URxvt.color4: #0000A8
		380	URxvt.color5: #A800A8
		381	URxvt.color6: #00A8A8
		382	URxvt.color7: #A8A8A8
		383
		384	URxvt.color8: #000054
		385	URxvt.color9: #FF0054
		386	URxvt.color10: #00FF54
		387	URxvt.color11: #FFFF54
		388	URxvt.color12: #0000FF
		389	URxvt.color13: #FF00FF
		390	URxvt.color14: #00FFFF
		391	URxvt.color15: #FFFFFF
		392
		393	And here is a more complete set of non-standard colors.
		394
		395	URxvt.cursorColor: #dc74d1
		396	URxvt.pointerColor: #dc74d1
		397	URxvt.background: #0e0e0e
		398	URxvt.foreground: #4ad5e1
		399	URxvt.color0: #000000
		400	URxvt.color8: #8b8f93
		401	URxvt.color1: #dc74d1
		402	URxvt.color9: #dc74d1
		403	URxvt.color2: #0eb8c7
		404	URxvt.color10: #0eb8c7
		405	URxvt.color3: #dfe37e
		406	URxvt.color11: #dfe37e
		407	URxvt.color5: #9e88f0
		408	URxvt.color13: #9e88f0
		409	URxvt.color6: #73f7ff
		410	URxvt.color14: #73f7ff
		411	URxvt.color7: #e1dddd
		412	URxvt.color15: #e1dddd
		413
		414	(They were described (not by me) as "pretty girly").
		415
		416	=head3 How does rxvt-unicode choose fonts?
		417
		418	Most fonts do not contain the full range of Unicode, which is
		419	fine. Chances are that the font you (or the admin/package maintainer of
		420	your system/os) have specified does not cover all the characters you want
		421	to display.
		422
		423	B<rxvt-unicode> makes a best-effort try at finding a replacement
		424	font. Often the result is fine, but sometimes the chosen font looks
		425	bad/ugly/wrong. Some fonts have totally strange characters that don't
		426	resemble the correct glyph at all, and rxvt-unicode lacks the artificial
		427	intelligence to detect that a specific glyph is wrong: it has to believe
		428	the font that the characters it claims to contain indeed look correct.
		429
		430	In that case, select a font of your taste and add it to the font list,
		431	e.g.:
		432
		433	@@URXVT_NAME@@ -fn basefont,font2,font3...
		434
		435	When rxvt-unicode sees a character, it will first look at the base
		436	font. If the base font does not contain the character, it will go to the
		437	next font, and so on. Specifying your own fonts will also speed up this
		438	search and use less resources within rxvt-unicode and the X-server.
		439
		440	The only limitation is that none of the fonts may be larger than the base
		441	font, as the base font defines the terminal character cell size, which
		442	must be the same due to the way terminals work.
		443
		444
		445	=head2 Keyboard, Mouse & User Interaction
		446
		447	=head3 The new selection selects pieces that are too big, how can I select single words?
		448
		449	If you want to select e.g. alphanumeric words, you can use the following
		450	setting:
		451
		452	URxvt.selection.pattern-0: ([[:word:]]+)
		453
		454	If you click more than twice, the selection will be extended
		455	more and more.
		456
		457	To get a selection that is very similar to the old code, try this pattern:
		458
		459	URxvt.selection.pattern-0: ([^"&'()*,;<=>?@[\\\\]^`{|})]+)
		460
		461	Please also note that the I<LeftClick Shift-LeftClik> combination also
		462	selects words like the old code.
		463
		464	=head3 I don't like the new selection/popups/hotkeys/perl, how do I change/disable it?
		465
		466	You can disable the perl extension completely by setting the
		467	B<perl-ext-common> resource to the empty string, which also keeps
		468	rxvt-unicode from initialising perl, saving memory.
		469
		470	If you only want to disable specific features, you first have to
		471	identify which perl extension is responsible. For this, read the section
		472	B<PREPACKAGED EXTENSIONS> in the @@URXVT_NAME@@perl(3) manpage. For
		473	example, to disable the B<selection-popup> and B<option-popup>, specify
		474	this B<perl-ext-common> resource:
		475
		476	URxvt.perl-ext-common: default,-selection-popup,-option-popup
		477
		478	This will keep the default extensions, but disable the two popup
		479	extensions. Some extensions can also be configured, for example,
		480	scrollback search mode is triggered by B<M-s>. You can move it to any
		481	other combination either by setting the B<searchable-scrollback> resource:
		482
		483	URxvt.searchable-scrollback: CM-s
		484
		485	=head3 The cursor moves when selecting text in the current input line, how do I switch this off?
		486
		487	See next entry.
		488
		489	=head3 During rlogin/ssh/telnet/etc. sessions, clicking near the cursor outputs strange escape sequences, how do I fix this?
		490
		491	These are caused by the C<readline> perl extension. Under normal
		492	circumstances, it will move your cursor around when you click into the
		493	line that contains it. It tries hard not to do this at the wrong moment,
		494	but when running a program that doesn't parse cursor movements or in some
		495	cases during rlogin sessions, it fails to detect this properly.
		496
		497	You can permamently switch this feature off by disabling the C<readline>
		498	extension:
		499
		500	URxvt.perl-ext-common: default,-readline
		501
		502	=head3 My numerical keypad acts weird and generates differing output?
		503
		504	Some Debian GNUL/Linux users seem to have this problem, although no
		505	specific details were reported so far. It is possible that this is caused
		506	by the wrong C<TERM> setting, although the details of wether and how
		507	this can happen are unknown, as C<TERM=rxvt> should offer a compatible
		508	keymap. See the answer to the previous question, and please report if that
		509	helped.
		510
		511	=head3 My Compose (Multi_key) key is no longer working.
		512
		513	The most common causes for this are that either your locale is not set
		514	correctly, or you specified a B<preeditStyle> that is not supported by
		515	your input method. For example, if you specified B<OverTheSpot> and
		516	your input method (e.g. the default input method handling Compose keys)
		517	does not support this (for instance because it is not visual), then
		518	rxvt-unicode will continue without an input method.
		519
		520	In this case either do not specify a B<preeditStyle> or specify more than
		521	one pre-edit style, such as B<OverTheSpot,Root,None>.
		522
		523	=head3 I cannot type C<Ctrl-Shift-2> to get an ASCII NUL character due to ISO 14755
		524
		525	Either try C<Ctrl-2> alone (it often is mapped to ASCII NUL even on
		526	international keyboards) or simply use ISO 14755 support to your
		527	advantage, typing <Ctrl-Shift-0> to get a ASCII NUL. This works for other
		528	codes, too, such as C<Ctrl-Shift-1-d> to type the default telnet escape
		529	character and so on.
		530
		531	=head3 Mouse cut/paste suddenly no longer works.
		532
		533	Make sure that mouse reporting is actually turned off since killing
		534	some editors prematurely may leave the mouse in mouse report mode. I've
		535	heard that tcsh may use mouse reporting unless it otherwise specified. A
		536	quick check is to see if cut/paste works when the Alt or Shift keys are
		537	depressed.
		538
		539	=head3 What's with the strange Backspace/Delete key behaviour?
		540
		541	Assuming that the physical Backspace key corresponds to the
		542	BackSpace keysym (not likely for Linux ... see the following
		543	question) there are two standard values that can be used for
		544	Backspace: C<^H> and C<^?>.
		545
		546	Historically, either value is correct, but rxvt-unicode adopts the debian
		547	policy of using C<^?> when unsure, because it's the one only only correct
		548	choice :).
		549
		550	Rxvt-unicode tries to inherit the current stty settings and uses the value
		551	of `erase' to guess the value for backspace. If rxvt-unicode wasn't
		552	started from a terminal (say, from a menu or by remote shell), then the
		553	system value of `erase', which corresponds to CERASE in <termios.h>, will
		554	be used (which may not be the same as your stty setting).
		555
		556	For starting a new rxvt-unicode:
		557
		558	# use Backspace = ^H
		559	$ stty erase ^H
		560	$ @@URXVT_NAME@@
		561
		562	# use Backspace = ^?
		563	$ stty erase ^?
		564	$ @@URXVT_NAME@@
		565
		566	Toggle with C<ESC [ 36 h> / C<ESC [ 36 l>.
		567
		568	For an existing rxvt-unicode:
		569
		570	# use Backspace = ^H
		571	$ stty erase ^H
		572	$ echo -n "^[[36h"
		573
		574	# use Backspace = ^?
		575	$ stty erase ^?
		576	$ echo -n "^[[36l"
		577
		578	This helps satisfy some of the Backspace discrepancies that occur, but
		579	if you use Backspace = C<^H>, make sure that the termcap/terminfo value
		580	properly reflects that.
		581
		582	The Delete key is a another casualty of the ill-defined Backspace problem.
		583	To avoid confusion between the Backspace and Delete keys, the Delete
		584	key has been assigned an escape sequence to match the vt100 for Execute
		585	(C<ESC [ 3 ~>) and is in the supplied termcap/terminfo.
		586
		587	Some other Backspace problems:
		588
		589	some editors use termcap/terminfo,
		590	some editors (vim I'm told) expect Backspace = ^H,
		591	GNU Emacs (and Emacs-like editors) use ^H for help.
		592
		593	Perhaps someday this will all be resolved in a consistent manner.
		594
		595	=head3 I don't like the key-bindings. How do I change them?
		596
		597	There are some compile-time selections available via configure. Unless
		598	you have run "configure" with the C<--disable-resources> option you can
		599	use the `keysym' resource to alter the keystrings associated with keysyms.
		600
		601	Here's an example for a URxvt session started using C<@@URXVT_NAME@@ -name URxvt>
		602
		603	URxvt.keysym.Home: \033[1~
		604	URxvt.keysym.End: \033[4~
		605	URxvt.keysym.C-apostrophe: \033<C-'>
		606	URxvt.keysym.C-slash: \033<C-/>
		607	URxvt.keysym.C-semicolon: \033<C-;>
		608	URxvt.keysym.C-grave: \033<C-`>
		609	URxvt.keysym.C-comma: \033<C-,>
		610	URxvt.keysym.C-period: \033<C-.>
		611	URxvt.keysym.C-0x60: \033<C-`>
		612	URxvt.keysym.C-Tab: \033<C-Tab>
		613	URxvt.keysym.C-Return: \033<C-Return>
		614	URxvt.keysym.S-Return: \033<S-Return>
		615	URxvt.keysym.S-space: \033<S-Space>
		616	URxvt.keysym.M-Up: \033<M-Up>
		617	URxvt.keysym.M-Down: \033<M-Down>
		618	URxvt.keysym.M-Left: \033<M-Left>
		619	URxvt.keysym.M-Right: \033<M-Right>
		620	URxvt.keysym.M-C-0: list \033<M-C- 0123456789 >
		621	URxvt.keysym.M-C-a: list \033<M-C- abcdefghijklmnopqrstuvwxyz >
		622	URxvt.keysym.F12: command:\033]701;zh_CN.GBK\007
		623
		624	See some more examples in the documentation for the B<keysym> resource.
		625
		626	=head3 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
		627
		628	KP_Insert == Insert
		629	F22 == Print
		630	F27 == Home
		631	F29 == Prior
		632	F33 == End
		633	F35 == Next
		634
		635	Rather than have rxvt-unicode try to accommodate all the various possible
		636	keyboard mappings, it is better to use `xmodmap' to remap the keys as
		637	required for your particular machine.
		638
		639
		640
		641	=head2 Terminal Configuration
		642
		643	=head3 Why doesn't rxvt-unicode read my resources?
		644
		645	Well, why, indeed? It does, in a way very similar to other X
		646	applications. Most importantly, this means that if you or your OS loads
		647	resources into the X display (the right way to do it), rxvt-unicode will
		648	ignore any resource files in your home directory. It will only read
		649	F<$HOME/.Xdefaults> when no resources are attached to the display.
		650
		651	If you have or use an F<$HOME/.Xresources> file, chances are that
		652	resources are loaded into your X-server. In this case, you have to
		653	re-login after every change (or run F<xrdb -merge $HOME/.Xresources>).
		654
		655	Also consider the form resources have to use:
		656
		657	URxvt.resource: value
		658
		659	If you want to use another form (there are lots of different ways of
		660	specifying resources), make sure you understand wether and why it
		661	works. If unsure, use the form above.
		662
215	=item When I log-in to another system it tells me about missing terminfo data?	663	=head3 When I log-in to another system it tells me about missing terminfo data?
216		664
217	The terminal description used by rxvt-unicode is not as widely available	665	The terminal description used by rxvt-unicode is not as widely available
218	as that for xterm, or even rxvt (for which the same problem often arises).	666	as that for xterm, or even rxvt (for which the same problem often arises).
219		667
220	The correct solution for this problem is to install the terminfo, this can	668	The correct solution for this problem is to install the terminfo, this can
…		…
236	resource to set it:	684	resource to set it:
237		685
238	URxvt.termName: rxvt	686	URxvt.termName: rxvt
239		687
240	If you don't plan to use B<rxvt> (quite common...) you could also replace	688	If you don't plan to use B<rxvt> (quite common...) you could also replace
241	the rxvt terminfo file with the rxvt-unicode one.	689	the rxvt terminfo file with the rxvt-unicode one and use C<TERM=rxvt>.
242		690
243	=item C<tic> outputs some error when compiling the terminfo entry.	691	=head3 C<tic> outputs some error when compiling the terminfo entry.
244		692
245	Most likely it's the empty definition for C<enacs=>. Just replace it by	693	Most likely it's the empty definition for C<enacs=>. Just replace it by
246	C<enacs=\E[0@> and try again.	694	C<enacs=\E[0@> and try again.
247		695
248	=item C<bash>'s readline does not work correctly under @@RXVT_NAME@@.	696	=head3 C<bash>'s readline does not work correctly under @@URXVT_NAME@@.
249		697
		698	See next entry.
		699
250	=item I need a termcap file entry.	700	=head3 I need a termcap file entry.
251		701
252	One reason you might want this is that some distributions or operating	702	One reason you might want this is that some distributions or operating
253	systems still compile some programs using the long-obsoleted termcap	703	systems still compile some programs using the long-obsoleted termcap
254	library (Fedora Core's bash is one example) and rely on a termcap entry	704	library (Fedora Core's bash is one example) and rely on a termcap entry
255	for C<rxvt-unicode>.	705	for C<rxvt-unicode>.
…		…
281	:sc=\E7:se=\E[27m:sf=^J:so=\E[7m:sr=\EM:st=\EH:ta=^I:\	731	:sc=\E7:se=\E[27m:sf=^J:so=\E[7m:sr=\EM:st=\EH:ta=^I:\
282	:te=\E[r\E[?1049l:ti=\E[?1049h:ue=\E[24m:up=\E[A:\	732	:te=\E[r\E[?1049l:ti=\E[?1049h:ue=\E[24m:up=\E[A:\
283	:us=\E[4m:vb=\E[?5h\E[?5l:ve=\E[?25h:vi=\E[?25l:\	733	:us=\E[4m:vb=\E[?5h\E[?5l:ve=\E[?25h:vi=\E[?25l:\
284	:vs=\E[?25h:	734	:vs=\E[?25h:
285		735
286	=item Why does C<ls> no longer have coloured output?	736	=head3 Why does C<ls> no longer have coloured output?
287		737
288	The C<ls> in the GNU coreutils unfortunately doesn't use terminfo to	738	The C<ls> in the GNU coreutils unfortunately doesn't use terminfo to
289	decide wether a terminal has colour, but uses it's own configuration	739	decide wether a terminal has colour, but uses it's own configuration
290	file. Needless to say, C<rxvt-unicode> is not in it's default file (among	740	file. Needless to say, C<rxvt-unicode> is not in it's default file (among
291	with most other terminals supporting colour). Either add:	741	with most other terminals supporting colour). Either add:
…		…
296		746
297	alias ls='ls --color=auto'	747	alias ls='ls --color=auto'
298		748
299	to your C<.profile> or C<.bashrc>.	749	to your C<.profile> or C<.bashrc>.
300		750
301	=item Why doesn't vim/emacs etc. use the 88 colour mode?	751	=head3 Why doesn't vim/emacs etc. use the 88 colour mode?
302		752
		753	See next entry.
		754
303	=item Why doesn't vim/emacs etc. make use of italic?	755	=head3 Why doesn't vim/emacs etc. make use of italic?
304		756
		757	See next entry.
		758
305	=item Why are the secondary screen-related options not working properly?	759	=head3 Why are the secondary screen-related options not working properly?
306		760
307	Make sure you are using C<TERM=rxvt-unicode>. Some pre-packaged	761	Make sure you are using C<TERM=rxvt-unicode>. Some pre-packaged
308	distributions (most notably Debian GNU/Linux) break rxvt-unicode	762	distributions (most notably Debian GNU/Linux) break rxvt-unicode
309	by setting C<TERM> to C<rxvt>, which doesn't have these extra	763	by setting C<TERM> to C<rxvt>, which doesn't have these extra
310	features. Unfortunately, some of these (most notably, again, Debian	764	features. Unfortunately, some of these (most notably, again, Debian
311	GNU/Linux) furthermore fail to even install the C<rxvt-unicode> terminfo	765	GNU/Linux) furthermore fail to even install the C<rxvt-unicode> terminfo
312	file, so you will need to install it on your own (See the question B<When	766	file, so you will need to install it on your own (See the question B<When
313	I log-in to another system it tells me about missing terminfo data?> on	767	I log-in to another system it tells me about missing terminfo data?> on
314	how to do this).	768	how to do this).
315		769
316	=item My numerical keypad acts weird and generates differing output?
317		770
318	Some Debian GNUL/Linux users seem to have this problem, although no	771	=head2 Encoding / Locale / Input Method Issues
319	specific details were reported so far. It is possible that this is caused
320	by the wrong C<TERM> setting, although the details of wether and how
321	this can happen are unknown, as C<TERM=rxvt> should offer a compatible
322	keymap. See the answer to the previous question, and please report if that
323	helped.
324		772
325	=item Rxvt-unicode does not seem to understand the selected encoding?	773	=head3 Rxvt-unicode does not seem to understand the selected encoding?
326		774
		775	See next entry.
		776
327	=item Unicode does not seem to work?	777	=head3 Unicode does not seem to work?
328		778
329	If you encounter strange problems like typing an accented character but	779	If you encounter strange problems like typing an accented character but
330	getting two unrelated other characters or similar, or if program output is	780	getting two unrelated other characters or similar, or if program output is
331	subtly garbled, then you should check your locale settings.	781	subtly garbled, then you should check your locale settings.
332		782
…		…
352		802
353	If nothing works and you are sure that everything is set correctly then	803	If nothing works and you are sure that everything is set correctly then
354	you will need to remember a little known fact: Some programs just don't	804	you will need to remember a little known fact: Some programs just don't
355	support locales :(	805	support locales :(
356		806
357	=item Why do some characters look so much different than others?	807	=head3 How does rxvt-unicode determine the encoding to use?
358		808
359	=item How does rxvt-unicode choose fonts?	809	See next entry.
360		810
361	Most fonts do not contain the full range of Unicode, which is	811	=head3 Is there an option to switch encodings?
362	fine. Chances are that the font you (or the admin/package maintainer of
363	your system/os) have specified does not cover all the characters you want
364	to display.
365		812
366	B<rxvt-unicode> makes a best-effort try at finding a replacement	813	Unlike some other terminals, rxvt-unicode has no encoding switch, and no
367	font. Often the result is fine, but sometimes the chosen font looks	814	specific "utf-8" mode, such as xterm. In fact, it doesn't even know about
368	bad/ugly/wrong. Some fonts have totally strange characters that don't	815	UTF-8 or any other encodings with respect to terminal I/O.
369	resemble the correct glyph at all, and rxvt-unicode lacks the artificial
370	intelligence to detect that a specific glyph is wrong: it has to believe
371	the font that the characters it claims to contain indeed look correct.
372		816
373	In that case, select a font of your taste and add it to the font list,	817	The reasons is that there exists a perfectly fine mechanism for selecting
374	e.g.:	818	the encoding, doing I/O and (most important) communicating this to all
375		819	applications so everybody agrees on character properties such as width
376	@@RXVT_NAME@@ -fn basefont,font2,font3...	820	and code number. This mechanism is the I<locale>. Applications not using
377		821	that info will have problems (for example, C<xterm> gets the width of
378	When rxvt-unicode sees a character, it will first look at the base	822	characters wrong as it uses it's own, locale-independent table under all
379	font. If the base font does not contain the character, it will go to the
380	next font, and so on. Specifying your own fonts will also speed up this
381	search and use less resources within rxvt-unicode and the X-server.
382
383	The only limitation is that none of the fonts may be larger than the base
384	font, as the base font defines the terminal character cell size, which
385	must be the same due to the way terminals work.
386
387	=item Why do some chinese characters look so different than others?
388
389	This is because there is a difference between script and language --
390	rxvt-unicode does not know which language the text that is output is,
391	as it only knows the unicode character codes. If rxvt-unicode first
392	sees a japanese/chinese character, it might choose a japanese font for
393	display. Subsequent japanese characters will use that font. Now, many
394	chinese characters aren't represented in japanese fonts, so when the first
395	non-japanese character comes up, rxvt-unicode will look for a chinese font
396	-- unfortunately at this point, it will still use the japanese font for
397	chinese characters that are also in the japanese font.
398
399	The workaround is easy: just tag a chinese font at the end of your font
400	list (see the previous question). The key is to view the font list as
401	a preference list: If you expect more japanese, list a japanese font
402	first. If you expect more chinese, put a chinese font first.
403
404	In the future it might be possible to switch language preferences at
405	runtime (the internal data structure has no problem with using different
406	fonts for the same character at the same time, but no interface for this
407	has been designed yet).
408
409	Until then, you might get away with switching fonts at runtime (see L<Can
410	I switch the fonts at runtime?> later in this document).
411
412	=item Why does rxvt-unicode sometimes leave pixel droppings?
413
414	Most fonts were not designed for terminal use, which means that character
415	size varies a lot. A font that is otherwise fine for terminal use might
416	contain some characters that are simply too wide. Rxvt-unicode will avoid
417	these characters. For characters that are just "a bit" too wide a special
418	"careful" rendering mode is used that redraws adjacent characters.
419
420	All of this requires that fonts do not lie about character sizes,
421	however: Xft fonts often draw glyphs larger than their acclaimed bounding
422	box, and rxvt-unicode has no way of detecting this (the correct way is to
423	ask for the character bounding box, which unfortunately is wrong in these
424	cases).	823	locales).
425		824
426	It's not clear (to me at least), wether this is a bug in Xft, freetype,	825	Rxvt-unicode uses the C<LC_CTYPE> locale category to select encoding. All
427	or the respective font. If you encounter this problem you might try using	826	programs doing the same (that is, most) will automatically agree in the
428	the C<-lsp> option to give the font more height. If that doesn't work, you	827	interpretation of characters.
429	might be forced to use a different font.
430		828
431	All of this is not a problem when using X11 core fonts, as their bounding	829	Unfortunately, there is no system-independent way to select locales, nor
432	box data is correct.	830	is there a standard on how locale specifiers will look like.
433		831
		832	On most systems, the content of the C<LC_CTYPE> environment variable
		833	contains an arbitrary string which corresponds to an already-installed
		834	locale. Common names for locales are C<en_US.UTF-8>, C<de_DE.ISO-8859-15>,
		835	C<ja_JP.EUC-JP>, i.e. C<language_country.encoding>, but other forms
		836	(i.e. C<de> or C<german>) are also common.
		837
		838	Rxvt-unicode ignores all other locale categories, and except for
		839	the encoding, ignores country or language-specific settings,
		840	i.e. C<de_DE.UTF-8> and C<ja_JP.UTF-8> are the normally same to
		841	rxvt-unicode.
		842
		843	If you want to use a specific encoding you have to make sure you start
		844	rxvt-unicode with the correct C<LC_CTYPE> category.
		845
		846	=head3 Can I switch locales at runtime?
		847
		848	Yes, using an escape sequence. Try something like this, which sets
		849	rxvt-unicode's idea of C<LC_CTYPE>.
		850
		851	printf '\e]701;%s\007' ja_JP.SJIS
		852
		853	See also the previous answer.
		854
		855	Sometimes this capability is rather handy when you want to work in
		856	one locale (e.g. C<de_DE.UTF-8>) but some programs don't support it
		857	(e.g. UTF-8). For example, I use this script to start C<xjdic>, which
		858	first switches to a locale supported by xjdic and back later:
		859
		860	printf '\e]701;%s\007' ja_JP.SJIS
		861	xjdic -js
		862	printf '\e]701;%s\007' de_DE.UTF-8
		863
		864	You can also use xterm's C<luit> program, which usually works fine, except
		865	for some locales where character width differs between program- and
		866	rxvt-unicode-locales.
		867
		868	=head3 My input method wants <some encoding> but I want UTF-8, what can I do?
		869
		870	You can specify separate locales for the input method and the rest of the
		871	terminal, using the resource C<imlocale>:
		872
		873	URxvt.imlocale: ja_JP.EUC-JP
		874
		875	Now you can start your terminal with C<LC_CTYPE=ja_JP.UTF-8> and still
		876	use your input method. Please note, however, that you will not be able to
		877	input characters outside C<EUC-JP> in a normal way then, as your input
		878	method limits you.
		879
		880	=head3 Rxvt-unicode crashes when the X Input Method changes or exits.
		881
		882	Unfortunately, this is unavoidable, as the XIM protocol is racy by
		883	design. Applications can avoid some crashes at the expense of memory
		884	leaks, and Input Methods can avoid some crashes by careful ordering at
		885	exit time. B<kinput2> (and derived input methods) generally succeeds,
		886	while B<SCIM> (or similar input methods) fails. In the end, however,
		887	crashes cannot be completely avoided even if both sides cooperate.
		888
		889	So the only workaround is not to kill your Input Method Servers.
		890
		891
		892	=head2 Operating Systems / Package Maintaining
		893
		894	=head3 I am using Debian GNU/Linux and have a problem...
		895
		896	The Debian GNU/Linux package of rxvt-unicode in sarge contains large
		897	patches that considerably change the behaviour of rxvt-unicode (but
		898	unfortunately this notice has been removed). Before reporting a bug to
		899	the original rxvt-unicode author please download and install the genuine
		900	version (L<http://software.schmorp.de#rxvt-unicode>) and try to reproduce
		901	the problem. If you cannot, chances are that the problems are specific to
		902	Debian GNU/Linux, in which case it should be reported via the Debian Bug
		903	Tracking System (use C<reportbug> to report the bug).
		904
		905	For other problems that also affect the Debian package, you can and
		906	probably should use the Debian BTS, too, because, after all, it's also a
		907	bug in the Debian version and it serves as a reminder for other users that
		908	might encounter the same issue.
		909
		910	=head3 I am maintaining rxvt-unicode for distribution/OS XXX, any recommendation?
		911
		912	You should build one binary with the default options. F<configure>
		913	now enables most useful options, and the trend goes to making them
		914	runtime-switchable, too, so there is usually no drawback to enbaling them,
		915	except higher disk and possibly memory usage. The perl interpreter should
		916	be enabled, as important functionality (menus, selection, likely more in
		917	the future) depends on it.
		918
		919	You should not overwrite the C<perl-ext-common> snd C<perl-ext> resources
		920	system-wide (except maybe with C<defaults>). This will result in useful
		921	behaviour. If your distribution aims at low memory, add an empty
		922	C<perl-ext-common> resource to the app-defaults file. This will keep the
		923	perl interpreter disabled until the user enables it.
		924
		925	If you can/want build more binaries, I recommend building a minimal
		926	one with C<--disable-everything> (very useful) and a maximal one with
		927	C<--enable-everything> (less useful, it will be very big due to a lot of
		928	encodings built-in that increase download times and are rarely used).
		929
		930	=head3 I need to make it setuid/setgid to support utmp/ptys on my OS, is this safe?
		931
		932	It should be, starting with release 7.1. You are encouraged to properly
		933	install urxvt with privileges necessary for your OS now.
		934
		935	When rxvt-unicode detects that it runs setuid or setgid, it will fork
		936	into a helper process for privileged operations (pty handling on some
		937	systems, utmp/wtmp/lastlog handling on others) and drop privileges
		938	immediately. This is much safer than most other terminals that keep
		939	privileges while running (but is more relevant to urxvt, as it contains
		940	things as perl interpreters, which might be "helpful" to attackers).
		941
		942	This forking is done as the very first within main(), which is very early
		943	and reduces possible bugs to initialisation code run before main(), or
		944	things like the dynamic loader of your system, which should result in very
		945	little risk.
		946
434	=item On Solaris 9, many line-drawing characters are too wide.	947	=head3 On Solaris 9, many line-drawing characters are too wide.
435		948
436	Seems to be a known bug, read	949	Seems to be a known bug, read
437	L<http://nixdoc.net/files/forum/about34198.html>. Some people use the	950	L<http://nixdoc.net/files/forum/about34198.html>. Some people use the
438	following ugly workaround to get non-double-wide-characters working:	951	following ugly workaround to get non-double-wide-characters working:
439		952
440	#define wcwidth(x) wcwidth(x) > 1 ? 1 : wcwidth(x)	953	#define wcwidth(x) wcwidth(x) > 1 ? 1 : wcwidth(x)
441		954
442	=item My Compose (Multi_key) key is no longer working.
443
444	The most common causes for this are that either your locale is not set
445	correctly, or you specified a B<preeditStyle> that is not supported by
446	your input method. For example, if you specified B<OverTheSpot> and
447	your input method (e.g. the default input method handling Compose keys)
448	does not support this (for instance because it is not visual), then
449	rxvt-unicode will continue without an input method.
450
451	In this case either do not specify a B<preeditStyle> or specify more than
452	one pre-edit style, such as B<OverTheSpot,Root,None>.
453
454	=item I cannot type C<Ctrl-Shift-2> to get an ASCII NUL character due to ISO 14755
455
456	Either try C<Ctrl-2> alone (it often is mapped to ASCII NUL even on
457	international keyboards) or simply use ISO 14755 support to your
458	advantage, typing <Ctrl-Shift-0> to get a ASCII NUL. This works for other
459	codes, too, such as C<Ctrl-Shift-1-d> to type the default telnet escape
460	character and so on.
461
462	=item How can I keep rxvt-unicode from using reverse video so much?
463
464	First of all, make sure you are running with the right terminal settings
465	(C<TERM=rxvt-unicode>), which will get rid of most of these effects. Then
466	make sure you have specified colours for italic and bold, as otherwise
467	rxvt-unicode might use reverse video to simulate the effect:
468
469	URxvt.colorBD: white
470	URxvt.colorIT: green
471
472	=item Some programs assume totally weird colours (red instead of blue), how can I fix that?
473
474	For some unexplainable reason, some rare programs assume a very weird
475	colour palette when confronted with a terminal with more than the standard
476	8 colours (rxvt-unicode supports 88). The right fix is, of course, to fix
477	these programs not to assume non-ISO colours without very good reasons.
478
479	In the meantime, you can either edit your C<rxvt-unicode> terminfo
480	definition to only claim 8 colour support or use C<TERM=rxvt>, which will
481	fix colours but keep you from using other rxvt-unicode features.
482
483	=item I am on FreeBSD and rxvt-unicode does not seem to work at all.	955	=head3 I am on FreeBSD and rxvt-unicode does not seem to work at all.
484		956
485	Rxvt-unicode requires the symbol C<__STDC_ISO_10646__> to be defined	957	Rxvt-unicode requires the symbol C<__STDC_ISO_10646__> to be defined
486	in your compile environment, or an implementation that implements it,	958	in your compile environment, or an implementation that implements it,
487	wether it defines the symbol or not. C<__STDC_ISO_10646__> requires that	959	wether it defines the symbol or not. C<__STDC_ISO_10646__> requires that
488	B<wchar_t> is represented as unicode.	960	B<wchar_t> is represented as unicode.
…		…
510		982
511	The rxvt-unicode author insists that the right way to fix this is in the	983	The rxvt-unicode author insists that the right way to fix this is in the
512	system libraries once and for all, instead of forcing every app to carry	984	system libraries once and for all, instead of forcing every app to carry
513	complete replacements for them :)	985	complete replacements for them :)
514		986
515	=item I use Solaris 9 and it doesn't compile/work/etc.	987	=head3 I use Solaris 9 and it doesn't compile/work/etc.
516		988
517	Try the diff in F<doc/solaris9.patch> as a base. It fixes the worst	989	Try the diff in F<doc/solaris9.patch> as a base. It fixes the worst
518	problems with C<wcwidth> and a compile problem.	990	problems with C<wcwidth> and a compile problem.
519		991
520	=item How can I use rxvt-unicode under cygwin?	992	=head3 How can I use rxvt-unicode under cygwin?
521		993
522	rxvt-unicode should compile and run out of the box on cygwin, using	994	rxvt-unicode should compile and run out of the box on cygwin, using
523	the X11 libraries that come with cygwin. libW11 emulation is no	995	the X11 libraries that come with cygwin. libW11 emulation is no
524	longer supported (and makes no sense, either, as it only supported a	996	longer supported (and makes no sense, either, as it only supported a
525	single font). I recommend starting the X-server in C<-multiwindow> or	997	single font). I recommend starting the X-server in C<-multiwindow> or
…		…
528		1000
529	At the time of this writing, cygwin didn't seem to support any multi-byte	1001	At the time of this writing, cygwin didn't seem to support any multi-byte
530	encodings (you might try C<LC_CTYPE=C-UTF-8>), so you are likely limited	1002	encodings (you might try C<LC_CTYPE=C-UTF-8>), so you are likely limited
531	to 8-bit encodings.	1003	to 8-bit encodings.
532		1004
533	=item How does rxvt-unicode determine the encoding to use?
534
535	=item Is there an option to switch encodings?
536
537	Unlike some other terminals, rxvt-unicode has no encoding switch, and no
538	specific "utf-8" mode, such as xterm. In fact, it doesn't even know about
539	UTF-8 or any other encodings with respect to terminal I/O.
540
541	The reasons is that there exists a perfectly fine mechanism for selecting
542	the encoding, doing I/O and (most important) communicating this to all
543	applications so everybody agrees on character properties such as width
544	and code number. This mechanism is the I<locale>. Applications not using
545	that info will have problems (for example, C<xterm> gets the width of
546	characters wrong as it uses it's own, locale-independent table under all
547	locales).
548
549	Rxvt-unicode uses the C<LC_CTYPE> locale category to select encoding. All
550	programs doing the same (that is, most) will automatically agree in the
551	interpretation of characters.
552
553	Unfortunately, there is no system-independent way to select locales, nor
554	is there a standard on how locale specifiers will look like.
555
556	On most systems, the content of the C<LC_CTYPE> environment variable
557	contains an arbitrary string which corresponds to an already-installed
558	locale. Common names for locales are C<en_US.UTF-8>, C<de_DE.ISO-8859-15>,
559	C<ja_JP.EUC-JP>, i.e. C<language_country.encoding>, but other forms
560	(i.e. C<de> or C<german>) are also common.
561
562	Rxvt-unicode ignores all other locale categories, and except for
563	the encoding, ignores country or language-specific settings,
564	i.e. C<de_DE.UTF-8> and C<ja_JP.UTF-8> are the normally same to
565	rxvt-unicode.
566
567	If you want to use a specific encoding you have to make sure you start
568	rxvt-unicode with the correct C<LC_CTYPE> category.
569
570	=item Can I switch locales at runtime?
571
572	Yes, using an escape sequence. Try something like this, which sets
573	rxvt-unicode's idea of C<LC_CTYPE>.
574
575	printf '\e]701;%s\007' ja_JP.SJIS
576
577	See also the previous answer.
578
579	Sometimes this capability is rather handy when you want to work in
580	one locale (e.g. C<de_DE.UTF-8>) but some programs don't support it
581	(e.g. UTF-8). For example, I use this script to start C<xjdic>, which
582	first switches to a locale supported by xjdic and back later:
583
584	printf '\e]701;%s\007' ja_JP.SJIS
585	xjdic -js
586	printf '\e]701;%s\007' de_DE.UTF-8
587
588	You can also use xterm's C<luit> program, which usually works fine, except
589	for some locales where character width differs between program- and
590	rxvt-unicode-locales.
591
592	=item Can I switch the fonts at runtime?
593
594	Yes, using an escape sequence. Try something like this, which has the same
595	effect as using the C<-fn> switch, and takes effect immediately:
596
597	printf '\e]50;%s\007' "9x15bold,xft:Kochi Gothic"
598
599	This is useful if you e.g. work primarily with japanese (and prefer a
600	japanese font), but you have to switch to chinese temporarily, where
601	japanese fonts would only be in your way.
602
603	You can think of this as a kind of manual ISO-2022 switching.
604
605	=item Why do italic characters look as if clipped?
606
607	Many fonts have difficulties with italic characters and hinting. For
608	example, the otherwise very nicely hinted font C<xft:Bitstream Vera Sans
609	Mono> completely fails in it's italic face. A workaround might be to
610	enable freetype autohinting, i.e. like this:
611
612	URxvt.italicFont: xft:Bitstream Vera Sans Mono:italic:autohint=true
613	URxvt.boldItalicFont: xft:Bitstream Vera Sans Mono:bold:italic:autohint=true
614
615	=item My input method wants <some encoding> but I want UTF-8, what can I do?
616
617	You can specify separate locales for the input method and the rest of the
618	terminal, using the resource C<imlocale>:
619
620	URxvt.imlocale: ja_JP.EUC-JP
621
622	Now you can start your terminal with C<LC_CTYPE=ja_JP.UTF-8> and still
623	use your input method. Please note, however, that you will not be able to
624	input characters outside C<EUC-JP> in a normal way then, as your input
625	method limits you.
626
627	=item Rxvt-unicode crashes when the X Input Method changes or exits.
628
629	Unfortunately, this is unavoidable, as the XIM protocol is racy by
630	design. Applications can avoid some crashes at the expense of memory
631	leaks, and Input Methods can avoid some crashes by careful ordering at
632	exit time. B<kinput2> (and derived input methods) generally succeeds,
633	while B<SCIM> (or similar input methods) fails. In the end, however,
634	crashes cannot be completely avoided even if both sides cooperate.
635
636	So the only workaround is not to kill your Input Method Servers.
637
638	=item Rxvt-unicode uses gobs of memory, how can I reduce that?
639
640	Rxvt-unicode tries to obey the rule of not charging you for something you
641	don't use. One thing you should try is to configure out all settings that
642	you don't need, for example, Xft support is a resource hog by design,
643	when used. Compiling it out ensures that no Xft font will be loaded
644	accidentally when rxvt-unicode tries to find a font for your characters.
645
646	Also, many people (me included) like large windows and even larger
647	scrollback buffers: Without C<--enable-unicode3>, rxvt-unicode will use
648	6 bytes per screen cell. For a 160x?? window this amounts to almost a
649	kilobyte per line. A scrollback buffer of 10000 lines will then (if full)
650	use 10 Megabytes of memory. With C<--enable-unicode3> it gets worse, as
651	rxvt-unicode then uses 8 bytes per screen cell.
652
653	=item Can I speed up Xft rendering somehow?
654
655	Yes, the most obvious way to speed it up is to avoid Xft entirely, as
656	it is simply slow. If you still want Xft fonts you might try to disable
657	antialiasing (by appending C<:antialias=false>), which saves lots of
658	memory and also speeds up rendering considerably.
659
660	=item Rxvt-unicode doesn't seem to anti-alias its fonts, what is wrong?
661
662	Rxvt-unicode will use whatever you specify as a font. If it needs to
663	fall back to it's default font search list it will prefer X11 core
664	fonts, because they are small and fast, and then use Xft fonts. It has
665	antialiasing disabled for most of them, because the author thinks they
666	look best that way.
667
668	If you want antialiasing, you have to specify the fonts manually.
669
670	=item Mouse cut/paste suddenly no longer works.
671
672	Make sure that mouse reporting is actually turned off since killing
673	some editors prematurely may leave the mouse in mouse report mode. I've
674	heard that tcsh may use mouse reporting unless it otherwise specified. A
675	quick check is to see if cut/paste works when the Alt or Shift keys are
676	depressed.
677
678	=item What's with this bold/blink stuff?
679
680	If no bold colour is set via C<colorBD:>, bold will invert text using the
681	standard foreground colour.
682
683	For the standard background colour, blinking will actually make the
684	text blink when compiled with C<--enable-blinking>. with standard
685	colours. Without C<--enable-blinking>, the blink attribute will be
686	ignored.
687
688	On ANSI colours, bold/blink attributes are used to set high-intensity
689	foreground/background colors.
690
691	color0-7 are the low-intensity colors.
692
693	color8-15 are the corresponding high-intensity colors.
694
695	=item I don't like the screen colors. How do I change them?
696
697	You can change the screen colors at run-time using F<~/.Xdefaults>
698	resources (or as long-options).
699
700	Here are values that are supposed to resemble a VGA screen,
701	including the murky brown that passes for low-intensity yellow:
702
703	URxvt.color0: #000000
704	URxvt.color1: #A80000
705	URxvt.color2: #00A800
706	URxvt.color3: #A8A800
707	URxvt.color4: #0000A8
708	URxvt.color5: #A800A8
709	URxvt.color6: #00A8A8
710	URxvt.color7: #A8A8A8
711
712	URxvt.color8: #000054
713	URxvt.color9: #FF0054
714	URxvt.color10: #00FF54
715	URxvt.color11: #FFFF54
716	URxvt.color12: #0000FF
717	URxvt.color13: #FF00FF
718	URxvt.color14: #00FFFF
719	URxvt.color15: #FFFFFF
720
721	And here is a more complete set of non-standard colors described (not by
722	me) as "pretty girly".
723
724	URxvt.cursorColor: #dc74d1
725	URxvt.pointerColor: #dc74d1
726	URxvt.background: #0e0e0e
727	URxvt.foreground: #4ad5e1
728	URxvt.color0: #000000
729	URxvt.color8: #8b8f93
730	URxvt.color1: #dc74d1
731	URxvt.color9: #dc74d1
732	URxvt.color2: #0eb8c7
733	URxvt.color10: #0eb8c7
734	URxvt.color3: #dfe37e
735	URxvt.color11: #dfe37e
736	URxvt.color5: #9e88f0
737	URxvt.color13: #9e88f0
738	URxvt.color6: #73f7ff
739	URxvt.color14: #73f7ff
740	URxvt.color7: #e1dddd
741	URxvt.color15: #e1dddd
742
743	=item How can I start @@RXVT_NAME@@d in a race-free way?
744
745	Try C<@@RXVT_NAME@@d -f -o>, which tells @@RXVT_NAME@@d to open the
746	display, create the listening socket and then fork.
747
748	=item What's with the strange Backspace/Delete key behaviour?
749
750	Assuming that the physical Backspace key corresponds to the
751	BackSpace keysym (not likely for Linux ... see the following
752	question) there are two standard values that can be used for
753	Backspace: C<^H> and C<^?>.
754
755	Historically, either value is correct, but rxvt-unicode adopts the debian
756	policy of using C<^?> when unsure, because it's the one only only correct
757	choice :).
758
759	Rxvt-unicode tries to inherit the current stty settings and uses the value
760	of `erase' to guess the value for backspace. If rxvt-unicode wasn't
761	started from a terminal (say, from a menu or by remote shell), then the
762	system value of `erase', which corresponds to CERASE in <termios.h>, will
763	be used (which may not be the same as your stty setting).
764
765	For starting a new rxvt-unicode:
766
767	# use Backspace = ^H
768	$ stty erase ^H
769	$ @@RXVT_NAME@@
770
771	# use Backspace = ^?
772	$ stty erase ^?
773	$ @@RXVT_NAME@@
774
775	Toggle with C<ESC [ 36 h> / C<ESC [ 36 l>.
776
777	For an existing rxvt-unicode:
778
779	# use Backspace = ^H
780	$ stty erase ^H
781	$ echo -n "^[[36h"
782
783	# use Backspace = ^?
784	$ stty erase ^?
785	$ echo -n "^[[36l"
786
787	This helps satisfy some of the Backspace discrepancies that occur, but
788	if you use Backspace = C<^H>, make sure that the termcap/terminfo value
789	properly reflects that.
790
791	The Delete key is a another casualty of the ill-defined Backspace problem.
792	To avoid confusion between the Backspace and Delete keys, the Delete
793	key has been assigned an escape sequence to match the vt100 for Execute
794	(C<ESC [ 3 ~>) and is in the supplied termcap/terminfo.
795
796	Some other Backspace problems:
797
798	some editors use termcap/terminfo,
799	some editors (vim I'm told) expect Backspace = ^H,
800	GNU Emacs (and Emacs-like editors) use ^H for help.
801
802	Perhaps someday this will all be resolved in a consistent manner.
803
804	=item I don't like the key-bindings. How do I change them?
805
806	There are some compile-time selections available via configure. Unless
807	you have run "configure" with the C<--disable-resources> option you can
808	use the `keysym' resource to alter the keystrings associated with keysyms.
809
810	Here's an example for a URxvt session started using C<@@RXVT_NAME@@ -name URxvt>
811
812	URxvt.keysym.Home: \033[1~
813	URxvt.keysym.End: \033[4~
814	URxvt.keysym.C-apostrophe: \033<C-'>
815	URxvt.keysym.C-slash: \033<C-/>
816	URxvt.keysym.C-semicolon: \033<C-;>
817	URxvt.keysym.C-grave: \033<C-`>
818	URxvt.keysym.C-comma: \033<C-,>
819	URxvt.keysym.C-period: \033<C-.>
820	URxvt.keysym.C-0x60: \033<C-`>
821	URxvt.keysym.C-Tab: \033<C-Tab>
822	URxvt.keysym.C-Return: \033<C-Return>
823	URxvt.keysym.S-Return: \033<S-Return>
824	URxvt.keysym.S-space: \033<S-Space>
825	URxvt.keysym.M-Up: \033<M-Up>
826	URxvt.keysym.M-Down: \033<M-Down>
827	URxvt.keysym.M-Left: \033<M-Left>
828	URxvt.keysym.M-Right: \033<M-Right>
829	URxvt.keysym.M-C-0: list \033<M-C- 0123456789 >
830	URxvt.keysym.M-C-a: list \033<M-C- abcdefghijklmnopqrstuvwxyz >
831	URxvt.keysym.F12: command:\033]701;zh_CN.GBK\007
832
833	See some more examples in the documentation for the B<keysym> resource.
834
835	=item I'm using keyboard model XXX that has extra Prior/Next/Insert keys.
836	How do I make use of them? For example, the Sun Keyboard type 4
837	has the following mappings that rxvt-unicode doesn't recognize.
838
839	KP_Insert == Insert
840	F22 == Print
841	F27 == Home
842	F29 == Prior
843	F33 == End
844	F35 == Next
845
846	Rather than have rxvt-unicode try to accommodate all the various possible
847	keyboard mappings, it is better to use `xmodmap' to remap the keys as
848	required for your particular machine.
849
850	=item How do I distinguish wether I'm running rxvt-unicode or a regular xterm?
851	I need this to decide about setting colors etc.
852
853	rxvt and rxvt-unicode always export the variable "COLORTERM", so you can
854	check and see if that is set. Note that several programs, JED, slrn,
855	Midnight Commander automatically check this variable to decide whether or
856	not to use color.
857
858	=item How do I set the correct, full IP address for the DISPLAY variable?
859
860	If you've compiled rxvt-unicode with DISPLAY_IS_IP and have enabled
861	insecure mode then it is possible to use the following shell script
862	snippets to correctly set the display. If your version of rxvt-unicode
863	wasn't also compiled with ESCZ_ANSWER (as assumed in these snippets) then
864	the COLORTERM variable can be used to distinguish rxvt-unicode from a
865	regular xterm.
866
867	Courtesy of Chuck Blake <cblake@BBN.COM> with the following shell script
868	snippets:
869
870	# Bourne/Korn/POSIX family of shells:
871	[ ${TERM:-foo} = foo ] && TERM=xterm # assume an xterm if we don't know
872	if [ ${TERM:-foo} = xterm ]; then
873	stty -icanon -echo min 0 time 15 # see if enhanced rxvt or not
874	echo -n '^[Z'
875	read term_id
876	stty icanon echo
877	if [ ""${term_id} = '^[[?1;2C' -a ${DISPLAY:-foo} = foo ]; then
878	echo -n '^[[7n' # query the rxvt we are in for the DISPLAY string
879	read DISPLAY # set it in our local shell
880	fi
881	fi
882
883	=item How do I compile the manual pages for myself?
884
885	You need to have a recent version of perl installed as F</usr/bin/perl>,
886	one that comes with F<pod2man>, F<pod2text> and F<pod2html>. Then go to
887	the doc subdirectory and enter C<make alldoc>.
888
889	=item My question isn't answered here, can I ask a human?
890
891	Before sending me mail, you could go to IRC: C<irc.freenode.net>,
892	channel C<#rxvt-unicode> has some rxvt-unicode enthusiasts that might be
893	interested in learning about new and exciting problems (but not FAQs :).
894
895	=back
896
897	=head1 RXVT TECHNICAL REFERENCE	1005	=head1 RXVT-UNICODE TECHNICAL REFERENCE
898		1006
899	=head1 DESCRIPTION	1007	=head1 DESCRIPTION
900		1008
901	The rest of this document describes various technical aspects of	1009	The rest of this document describes various technical aspects of
902	B<rxvt-unicode>. First the description of supported command sequences,	1010	B<rxvt-unicode>. First the description of supported command sequences,
…		…
1675	B<< C<Ps = 46> >> Change Log File to B<< C<Pt> >> I<unimplemented>	1783	B<< C<Ps = 46> >> Change Log File to B<< C<Pt> >> I<unimplemented>
1676	B<< C<Ps = 49> >> Change default background colour to B<< C<Pt> >>.	1784	B<< C<Ps = 49> >> Change default background colour to B<< C<Pt> >>.
1677	B<< C<Ps = 50> >> Set fontset to B<< C<Pt> >>, with the following special values of B<< C<Pt> >> (B<rxvt>) B<< C<#+n> >> change up B<< C<n> >> B<< C<#-n> >> change down B<< C<n> >> if B<< C<n> >> is missing of 0, a value of 1 is used I<empty> change to font0 B<< C<n> >> change to font B<< C<n> >>	1785	B<< C<Ps = 50> >> Set fontset to B<< C<Pt> >>, with the following special values of B<< C<Pt> >> (B<rxvt>) B<< C<#+n> >> change up B<< C<n> >> B<< C<#-n> >> change down B<< C<n> >> if B<< C<n> >> is missing of 0, a value of 1 is used I<empty> change to font0 B<< C<n> >> change to font B<< C<n> >>
1678	B<< C<Ps = 55> >> Log all scrollback buffer and all of screen to B<< C<Pt> >>	1786	B<< C<Ps = 55> >> Log all scrollback buffer and all of screen to B<< C<Pt> >>
1679	B<< C<Ps = 701> >> Change current locale to B<< C<Pt> >>, or, if B<< C<Pt> >> is B<< C<?> >>, return the current locale (Compile frills).	1787	B<< C<Ps = 701> >> Change current locale to B<< C<Pt> >>, or, if B<< C<Pt> >> is B<< C<?> >>, return the current locale (Compile frills).
		1788	B<< C<Ps = 702> >> Request version if B<< C<Pt> >> is B<< C<?> >>, returning C<rxvt-unicode>, the resource name, the major and minor version numbers, e.g. C<ESC ] 702 ; rxvt-unicode ; urxvt ; 7 ; 4 ST>.
1680	B<< C<Ps = 704> >> Change colour of italic characters to B<< C<Pt> >>	1789	B<< C<Ps = 704> >> Change colour of italic characters to B<< C<Pt> >>
1681	B<< C<Ps = 705> >> Change background pixmap tint colour to B<< C<Pt> >> (Compile transparency).	1790	B<< C<Ps = 705> >> Change background pixmap tint colour to B<< C<Pt> >> (Compile transparency).
1682	B<< C<Ps = 706> >> Change colour of bold characters to B<< C<Pt> >>	1791	B<< C<Ps = 706> >> Change colour of bold characters to B<< C<Pt> >>
1683	B<< C<Ps = 707> >> Change colour of underlined characters to B<< C<Pt> >>	1792	B<< C<Ps = 707> >> Change colour of underlined characters to B<< C<Pt> >>
1684	B<< C<Ps = 710> >> Set normal fontset to B<< C<Pt> >>. Same as C<Ps = 50>.	1793	B<< C<Ps = 710> >> Set normal fontset to B<< C<Pt> >>. Same as C<Ps = 50>.
…		…
1799	=begin table	1908	=begin table
1800		1909
1801	4 Shift	1910	4 Shift
1802	8 Meta	1911	8 Meta
1803	16 Control	1912	16 Control
1804	32 Double Click I<(Rxvt extension)>	1913	32 Double Click I<(rxvt extension)>
1805		1914
1806	=end table	1915	=end table
1807		1916
1808	Col = B<< C<< <x> - SPACE >> >>	1917	Col = B<< C<< <x> - SPACE >> >>
1809		1918
…		…
1947	alternative input methods (e.g. kinput2) and will also correctly	2056	alternative input methods (e.g. kinput2) and will also correctly
1948	set up the input for people using dead keys or compose keys.	2057	set up the input for people using dead keys or compose keys.
1949		2058
1950	=item --enable-unicode3 (default: off)	2059	=item --enable-unicode3 (default: off)
1951		2060
		2061	Recommended to stay off unless you really need non-BMP characters.
		2062
1952	Enable direct support for displaying unicode codepoints above	2063	Enable direct support for displaying unicode codepoints above
1953	65535 (the basic multilingual page). This increases storage	2064	65535 (the basic multilingual page). This increases storage
1954	requirements per character from 2 to 4 bytes. X11 fonts do not yet	2065	requirements per character from 2 to 4 bytes. X11 fonts do not yet
1955	support these extra characters, but Xft does.	2066	support these extra characters, but Xft does.
1956		2067
…		…
1966	composite characters. This is required for proper viewing of text	2077	composite characters. This is required for proper viewing of text
1967	where accents are encoded as seperate unicode characters. This is	2078	where accents are encoded as seperate unicode characters. This is
1968	done by using precomposited characters when available or creating	2079	done by using precomposited characters when available or creating
1969	new pseudo-characters when no precomposed form exists.	2080	new pseudo-characters when no precomposed form exists.
1970		2081
1971	Without --enable-unicode3, the number of additional precomposed characters	2082	Without --enable-unicode3, the number of additional precomposed
1972	is rather limited (2048, if this is full, rxvt-unicode will use the	2083	characters is somewhat limited (the 6400 private use characters will be
1973	private use area, extending the number of combinations to 8448). With
1974	--enable-unicode3, no practical limit exists.	2084	(ab-)used). With --enable-unicode3, no practical limit exists.
1975		2085
1976	This option will also enable storage (but not display) of characters	2086	This option will also enable storage (but not display) of characters
1977	beyond plane 0 (>65535) when --enable-unicode3 was not specified.	2087	beyond plane 0 (>65535) when --enable-unicode3 was not specified.
1978		2088
1979	The combining table also contains entries for arabic presentation forms,	2089	The combining table also contains entries for arabic presentation forms,
1980	but these are not currently used. Bug me if you want these to be used (and	2090	but these are not currently used. Bug me if you want these to be used (and
1981	tell me how these are to be used...).	2091	tell me how these are to be used...).
1982		2092
1983	=item --enable-fallback(=CLASS) (default: Rxvt)	2093	=item --enable-fallback(=CLASS) (default: Rxvt)
1984		2094
1985	When reading resource settings, also read settings for class CLASS. To disable resource fallback use --disable-fallback.	2095	When reading resource settings, also read settings for class CLASS. To
		2096	disable resource fallback use --disable-fallback.
1986		2097
1987	=item --with-res-name=NAME (default: urxvt)	2098	=item --with-res-name=NAME (default: urxvt)
1988		2099
1989	Use the given name as default application name when	2100	Use the given name as default application name when
1990	reading resources. Specify --with-res-name=rxvt to replace rxvt.	2101	reading resources. Specify --with-res-name=rxvt to replace rxvt.
…		…
2080		2191
2081	MWM-hints	2192	MWM-hints
2082	EWMH-hints (pid, utf8 names) and protocols (ping)	2193	EWMH-hints (pid, utf8 names) and protocols (ping)
2083	seperate underline colour (-underlineColor)	2194	seperate underline colour (-underlineColor)
2084	settable border widths and borderless switch (-w, -b, -bl)	2195	settable border widths and borderless switch (-w, -b, -bl)
		2196	visual depth selection (-depth)
2085	settable extra linespacing /-lsp)	2197	settable extra linespacing /-lsp)
2086	iso-14755-2 and -3, and visual feedback	2198	iso-14755-2 and -3, and visual feedback
2087	backindex and forwardindex escape sequence
2088	window op and some xterm/OSC escape sequences
2089	tripleclickwords (-tcw)	2199	tripleclickwords (-tcw)
2090	settable insecure mode (-insecure)	2200	settable insecure mode (-insecure)
2091	keysym remapping support	2201	keysym remapping support
2092	cursor blinking and underline cursor (-cb, -uc)	2202	cursor blinking and underline cursor (-cb, -uc)
2093	XEmbed support (-embed)	2203	XEmbed support (-embed)
2094	user-pty (-pty-fd)	2204	user-pty (-pty-fd)
2095	hold on exit (-hold)	2205	hold on exit (-hold)
2096	skip builtin block graphics (-sbg)	2206	skip builtin block graphics (-sbg)
		2207
		2208	It also enabled some non-essential features otherwise disabled, such as:
		2209
		2210	some round-trip time optimisations
		2211	nearest color allocation on pseudocolor screens
		2212	UTF8_STRING supporr for selection
2097	sgr modes 90..97 and 100..107	2213	sgr modes 90..97 and 100..107
		2214	backindex and forwardindex escape sequences
		2215	view change/zero scorllback esacpe sequences
		2216	locale switching escape sequence
		2217	window op and some xterm/OSC escape sequences
		2218	rectangular selections
		2219	trailing space removal for selections
		2220	verbose X error handling
2098		2221
2099	=item --enable-iso14755 (default: on)	2222	=item --enable-iso14755 (default: on)
2100		2223
2101	Enable extended ISO 14755 support (see @@RXVT_NAME@@(1), or	2224	Enable extended ISO 14755 support (see @@RXVT_NAME@@(1), or
2102	F<doc/rxvt.1.txt>). Basic support (section 5.1) is enabled by	2225	F<doc/rxvt.1.txt>). Basic support (section 5.1) is enabled by
…		…
2145		2268
2146	=item --enable-pointer-blank (default: on)	2269	=item --enable-pointer-blank (default: on)
2147		2270
2148	Add support to have the pointer disappear when typing or inactive.	2271	Add support to have the pointer disappear when typing or inactive.
2149		2272
2150	=item --enable-perl (default: off)	2273	=item --enable-perl (default: on)
2151		2274
2152	Enable an embedded perl interpreter. See the B<@@RXVT_NAME@@perl(3)>	2275	Enable an embedded perl interpreter. See the B<@@RXVT_NAME@@perl(3)>
2153	manpage (F<doc/rxvtperl.txt>) for more info on this feature, or the files	2276	manpage (F<doc/rxvtperl.txt>) for more info on this feature, or the files
2154	in F<src/perl-ext/> for the extensions that are installed by default. The	2277	in F<src/perl-ext/> for the extensions that are installed by default. The
2155	perl interpreter that is used can be specified via the C<PERL> environment	2278	perl interpreter that is used can be specified via the C<PERL> environment

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