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1=head1 NAME 1=head1 NAME
2 2
3RXVT TECHNICAL REFERENCE - command sequences and background information 3RXVT REFERENCE - FAQ, command sequences and other background information
4 4
5=head1 SYNOPSIS 5=head1 SYNOPSIS
6 6
7 # set a new font set 7 # set a new font set
8 printf '\33]50;%s\007' 9x15,xft:Kochi" Mincho" 8 printf '\33]50;%s\007' 9x15,xft:Kochi" Mincho"
10 # change the locale and tell rxvt-unicode about it 10 # change the locale and tell rxvt-unicode about it
11 export LC_CTYPE=ja_JP.EUC-JP; printf "\33]701;$LC_CTYPE\007" 11 export LC_CTYPE=ja_JP.EUC-JP; printf "\33]701;$LC_CTYPE\007"
12 12
13 # set window title 13 # set window title
14 printf '\33]2;%s\007' "new window title" 14 printf '\33]2;%s\007' "new window title"
15
16=head1 DESCRIPTION
17
18This document contains the FAQ, the RXVT TECHNICAL REFERENCE documenting
19all escape sequences, and other background information.
20
21The newest version of this document is
22also available on the World Wide Web at
23L<http://cvs.schmorp.de/browse/*checkout*/rxvt-unicode/doc/rxvt.7.html>.
24
25=head1 FREQUENTLY ASKED QUESTIONS
26
27=over 4
28
29=item How do I know which rxvt-unicode version I'm using?
30
31The version number is displayed with the usage (-h). Also the escape
32sequence C<ESC [ 8 n> sets the window title to the version number.
33
34=item I am using Debian GNU/Linux and have a problem...
35
36The Debian GNU/Linux package of rxvt-unicode contains large patches that
37considerably change the behaviour of rxvt-unicode. Before reporting a
38bug to the original rxvt-unicode author please download and install the
39genuine version (L<http://software.schmorp.de#rxvt-unicode>) and try to
40reproduce the problem. If you cannot, chances are that the problems are
41specific to Debian GNU/Linux, in which case it should be reported via the
42Debian Bug Tracking System (use C<reportbug> to report the bug).
43
44For other problems that also affect the Debian package, you can and
45probably should use the Debian BTS, too, because, after all, it's also a
46bug in the Debian version and it serves as a reminder for other users that
47might encounter the same issue.
48
49=item When I log-in to another system it tells me about missing terminfo data?
50
51The terminal description used by rxvt-unicode is not as widely available
52as that for xterm, or even rxvt (for which the same problem often arises).
53
54The correct solution for this problem is to install the terminfo, this can
55be done like this (with ncurses' infocmp):
56
57 REMOTE=remotesystem.domain
58 infocmp rxvt-unicode | ssh $REMOTE "cat >/tmp/ti && tic /tmp/ti"
59
60... or by installing rxvt-unicode normally on the remote system,
61
62If you cannot or do not want to do this, then you can simply set
63C<TERM=rxvt> or even C<TERM=xterm>, and live with the small number of
64problems arising, which includes wrong keymapping, less and different
65colours and some refresh errors in fullscreen applications. It's a nice
66quick-and-dirty workaround for rare cases, though.
67
68If you always want to do this (and are fine with the consequences) you
69can either recompile rxvt-unicode with the desired TERM value or use a
70resource to set it:
71
72 URxvt.termName: rxvt
73
74If you don't plan to use B<rxvt> (quite common...) you could also replace
75the rxvt terminfo file with the rxvt-unicode one.
76
77=item C<bash>'s readline does not work correctly under @@RXVT_NAME@@.
78
79=item I need a termcap file entry.
80
81One reason you might want this is that some distributions or operating
82systems still compile some programs using the long-obsoleted termcap
83library (Fedora Core's bash is one example) and rely on a termcap entry
84for C<rxvt-unicode>.
85
86You could use rxvt's termcap entry with resonable results in many cases.
87You can also create a termcap entry by using terminfo's infocmp program
88like this:
89
90 infocmp -C rxvt-unicode
91
92Or you could use this termcap entry, generated by the command above:
93
94 rxvt-unicode|rxvt-unicode terminal (X Window System):\
95 :am:bw:eo:km:mi:ms:xn:xo:\
96 :co#80:it#8:li#24:lm#0:\
97 :AL=\E[%dL:DC=\E[%dP:DL=\E[%dM:DO=\E[%dB:IC=\E[%d@:\
98 :K1=\EOw:K2=\EOu:K3=\EOy:K4=\EOq:K5=\EOs:LE=\E[%dD:\
99 :RI=\E[%dC:SF=\E[%dS:SR=\E[%dT:UP=\E[%dA:ae=\E(B:al=\E[L:\
100 :as=\E(0:bl=^G:cd=\E[J:ce=\E[K:cl=\E[H\E[2J:\
101 :cm=\E[%i%d;%dH:cr=^M:cs=\E[%i%d;%dr:ct=\E[3g:dc=\E[P:\
102 :dl=\E[M:do=^J:ec=\E[%dX:ei=\E[4l:ho=\E[H:\
103 :i1=\E[?47l\E=\E[?1l:ic=\E[@:im=\E[4h:\
104 :is=\E[r\E[m\E[2J\E[H\E[?7h\E[?1;3;4;6l\E[4l:\
105 :k1=\E[11~:k2=\E[12~:k3=\E[13~:k4=\E[14~:k5=\E[15~:\
106 :k6=\E[17~:k7=\E[18~:k8=\E[19~:k9=\E[20~:kD=\E[3~:\
107 :kI=\E[2~:kN=\E[6~:kP=\E[5~:kb=\177:kd=\EOB:ke=\E[?1l\E>:\
108 :kh=\E[7~:kl=\EOD:kr=\EOC:ks=\E[?1h\E=:ku=\EOA:le=^H:\
109 :mb=\E[5m:md=\E[1m:me=\E[m\017:mr=\E[7m:nd=\E[C:rc=\E8:\
110 :sc=\E7:se=\E[27m:sf=^J:so=\E[7m:sr=\EM:st=\EH:ta=^I:\
111 :te=\E[r\E[?1049l:ti=\E[?1049h:ue=\E[24m:up=\E[A:\
112 :us=\E[4m:vb=\E[?5h\E[?5l:ve=\E[?25h:vi=\E[?25l:\
113 :vs=\E[?25h:
114
115=item Why does C<ls> no longer have coloured output?
116
117The C<ls> in the GNU coreutils unfortunately doesn't use terminfo to
118decide wether a terminal has colour, but uses it's own configuration
119file. Needless to say, C<rxvt-unicode> is not in it's default file (among
120with most other terminals supporting colour). Either add:
121
122 TERM rxvt-unicode
123
124to C</etc/DIR_COLORS> or simply add:
125
126 alias ls='ls --color=auto'
127
128to your C<.profile> or C<.bashrc>.
129
130=item Why doesn't vim/emacs etc. use the 88 colour mode?
131
132=item Why doesn't vim/emacs etc. make use of italic?
133
134=item Why are the secondary screen-related options not working properly?
135
136Make sure you are using C<TERM=rxvt-unicode>. Some pre-packaged
137distributions (most notably Debian GNU/Linux) break rxvt-unicode
138by setting C<TERM> to C<rxvt>, which doesn't have these extra
139features. Unfortunately, some of these (most notably, again, Debian
140GNU/Linux) furthermore fail to even install the C<rxvt-unicode> terminfo
141file, so you will need to install it on your own (See the question B<When
142I log-in to another system it tells me about missing terminfo data?> on
143how to do this).
144
145=item My numerical keypad acts weird and generates differing output?
146
147Some Debian GNUL/Linux users seem to have this problem, although no
148specific details were reported so far. It is possible that this is caused
149by the wrong C<TERM> setting, although the details of wether and how
150this can happen are unknown, as C<TERM=rxvt> should offer a compatible
151keymap. See the answer to the previous question, and please report if that
152helped.
153
154=item Rxvt-unicode does not seem to understand the selected encoding?
155
156=item Unicode does not seem to work?
157
158If you encounter strange problems like typing an accented character but
159getting two unrelated other characters or similar, or if program output is
160subtly garbled, then you should check your locale settings.
161
162Rxvt-unicode must be started with the same C<LC_CTYPE> setting as the
163programs. Often rxvt-unicode is started in the C<C> locale, while the
164login script running within the rxvt-unicode window changes the locale to
165something else, e.g. C<en_GB.UTF-8>. Needless to say, this is not going to work.
166
167The best thing is to fix your startup environment, as you will likely run
168into other problems. If nothing works you can try this in your .profile.
169
170 printf '\e]701;%s\007' "$LC_CTYPE"
171
172If this doesn't work, then maybe you use a C<LC_CTYPE> specification not
173supported on your systems. Some systems have a C<locale> command which
174displays this (also, C<perl -e0> can be used to check locale settings, as
175it will complain loudly if it cannot set the locale). If it displays something
176like:
177
178 locale: Cannot set LC_CTYPE to default locale: ...
179
180Then the locale you specified is not supported on your system.
181
182If nothing works and you are sure that everything is set correctly then
183you will need to remember a little known fact: Some programs just don't
184support locales :(
185
186=item Why do some characters look so much different than others?
187
188=item How does rxvt-unicode choose fonts?
189
190Most fonts do not contain the full range of Unicode, which is
191fine. Chances are that the font you (or the admin/package maintainer of
192your system/os) have specified does not cover all the characters you want
193to display.
194
195B<rxvt-unicode> makes a best-effort try at finding a replacement
196font. Often the result is fine, but sometimes the chosen font looks
197bad/ugly/wrong. Some fonts have totally strange characters that don't
198resemble the correct glyph at all, and rxvt-unicode lacks the artificial
199intelligence to detect that a specific glyph is wrong: it has to believe
200the font that the characters it claims to contain indeed look correct.
201
202In that case, select a font of your taste and add it to the font list,
203e.g.:
204
205 @@RXVT_NAME@@ -fn basefont,font2,font3...
206
207When rxvt-unicode sees a character, it will first look at the base
208font. If the base font does not contain the character, it will go to the
209next font, and so on. Specifying your own fonts will also speed up this
210search and use less resources within rxvt-unicode and the X-server.
211
212The only limitation is that none of the fonts may be larger than the base
213font, as the base font defines the terminal character cell size, which
214must be the same due to the way terminals work.
215
216=item Why do some chinese characters look so different than others?
217
218This is because there is a difference between script and language --
219rxvt-unicode does not know which language the text that is output is,
220as it only knows the unicode character codes. If rxvt-unicode first
221sees a japanese/chinese character, it might choose a japanese font for
222display. Subsequent japanese characters will use that font. Now, many
223chinese characters aren't represented in japanese fonts, so when the first
224non-japanese character comes up, rxvt-unicode will look for a chinese font
225-- unfortunately at this point, it will still use the japanese font for
226chinese characters that are also in the japanese font.
227
228The workaround is easy: just tag a chinese font at the end of your font
229list (see the previous question). The key is to view the font list as
230a preference list: If you expect more japanese, list a japanese font
231first. If you expect more chinese, put a chinese font first.
232
233In the future it might be possible to switch language preferences at
234runtime (the internal data structure has no problem with using different
235fonts for the same character at the same time, but no interface for this
236has been designed yet).
237
238Until then, you might get away with switching fonts at runtime (see L<Can
239I switch the fonts at runtime?> later in this document).
240
241=item Why does rxvt-unicode sometimes leave pixel droppings?
242
243Most fonts were not designed for terminal use, which means that character
244size varies a lot. A font that is otherwise fine for terminal use might
245contain some characters that are simply too wide. Rxvt-unicode will avoid
246these characters. For characters that are just "a bit" too wide a special
247"careful" rendering mode is used that redraws adjacent characters.
248
249All of this requires that fonts do not lie about character sizes,
250however: Xft fonts often draw glyphs larger than their acclaimed bounding
251box, and rxvt-unicode has no way of detecting this (the correct way is to
252ask for the character bounding box, which unfortunately is wrong in these
253cases).
254
255It's not clear (to me at least), wether this is a bug in Xft, freetype,
256or the respective font. If you encounter this problem you might try using
257the C<-lsp> option to give the font more height. If that doesn't work, you
258might be forced to use a different font.
259
260All of this is not a problem when using X11 core fonts, as their bounding
261box data is correct.
262
263=item My Compose (Multi_key) key is no longer working.
264
265The most common causes for this are that either your locale is not set
266correctly, or you specified a B<preeditStyle> that is not supported by
267your input method. For example, if you specified B<OverTheSpot> and
268your input method (e.g. the default input method handling Compose keys)
269does not support this (for instance because it is not visual), then
270rxvt-unicode will continue without an input method.
271
272In this case either do not specify a B<preeditStyle> or specify more than
273one pre-edit style, such as B<OverTheSpot,Root,None>.
274
275=item I cannot type C<Ctrl-Shift-2> to get an ASCII NUL character due to ISO 14755
276
277Either try C<Ctrl-2> alone (it often is mapped to ASCII NUL even on
278international keyboards) or simply use ISO 14755 support to your
279advantage, typing <Ctrl-Shift-0> to get a ASCII NUL. This works for other
280codes, too, such as C<Ctrl-Shift-1-d> to type the default telnet escape
281character and so on.
282
283=item How can I keep rxvt-unicode from using reverse video so much?
284
285First of all, make sure you are running with the right terminal settings
286(C<TERM=rxvt-unicode>), which will get rid of most of these effects. Then
287make sure you have specified colours for italic and bold, as otherwise
288rxvt-unicode might use reverse video to simulate the effect:
289
290 URxvt.colorBD: white
291 URxvt.colorIT: green
292
293=item Some programs assume totally weird colours (red instead of blue), how can I fix that?
294
295For some unexplainable reason, some rare programs assume a very weird
296colour palette when confronted with a terminal with more than the standard
2978 colours (rxvt-unicode supports 88). The right fix is, of course, to fix
298these programs not to assume non-ISO colours without very good reasons.
299
300In the meantime, you can either edit your C<rxvt-unicode> terminfo
301definition to only claim 8 colour support or use C<TERM=rxvt>, which will
302fix colours but keep you from using other rxvt-unicode features.
303
304=item I am on FreeBSD and rxvt-unicode does not seem to work at all.
305
306Rxvt-unicode requires the symbol C<__STDC_ISO_10646__> to be defined
307in your compile environment, or an implementation that implements it,
308wether it defines the symbol or not. C<__STDC_ISO_10646__> requires that
309B<wchar_t> is represented as unicode.
310
311As you might have guessed, FreeBSD does neither define this symobl nor
312does it support it. Instead, it uses it's own internal representation of
313B<wchar_t>. This is, of course, completely fine with respect to standards.
314
315However, C<__STDC_ISO_10646__> is the only sane way to support
316multi-language apps in an OS, as using a locale-dependent (and
317non-standardized) representation of B<wchar_t> makes it impossible to
318convert between B<wchar_t> (as used by X11 and your applications) and any
319other encoding without implementing OS-specific-wrappers for each and
320every locale. There simply are no APIs to convert B<wchar_t> into anything
321except the current locale encoding.
322
323Some applications (such as the formidable B<mlterm>) work around this
324by carrying their own replacement functions for character set handling
325with them, and either implementing OS-dependent hacks or doing multiple
326conversions (which is slow and unreliable in case the OS implements
327encodings slightly different than the terminal emulator).
328
329The rxvt-unicode author insists that the right way to fix this is in the
330system libraries once and for all, instead of forcing every app to carry
331complete replacements for them :)
332
333=item How does rxvt-unicode determine the encoding to use?
334
335=item Is there an option to switch encodings?
336
337Unlike some other terminals, rxvt-unicode has no encoding switch, and no
338specific "utf-8" mode, such as xterm. In fact, it doesn't even know about
339UTF-8 or any other encodings with respect to terminal I/O.
340
341The reasons is that there exists a perfectly fine mechanism for selecting
342the encoding, doing I/O and (most important) communicating this to all
343applications so everybody agrees on character properties such as width
344and code number. This mechanism is the I<locale>. Applications not using
345that info will have problems (for example, C<xterm> gets the width of
346characters wrong as it uses it's own, locale-independent table under all
347locales).
348
349Rxvt-unicode uses the C<LC_CTYPE> locale category to select encoding. All
350programs doing the same (that is, most) will automatically agree in the
351interpretation of characters.
352
353Unfortunately, there is no system-independent way to select locales, nor
354is there a standard on how locale specifiers will look like.
355
356On most systems, the content of the C<LC_CTYPE> environment variable
357contains an arbitrary string which corresponds to an already-installed
358locale. Common names for locales are C<en_US.UTF-8>, C<de_DE.ISO-8859-15>,
359C<ja_JP.EUC-JP>, i.e. C<language_country.encoding>, but other forms
360(i.e. C<de> or C<german>) are also common.
361
362Rxvt-unicode ignores all other locale categories, and except for
363the encoding, ignores country or language-specific settings,
364i.e. C<de_DE.UTF-8> and C<ja_JP.UTF-8> are the normally same to
365rxvt-unicode.
366
367If you want to use a specific encoding you have to make sure you start
368rxvt-unicode with the correct C<LC_CTYPE> category.
369
370=item Can I switch locales at runtime?
371
372Yes, using an escape sequence. Try something like this, which sets
373rxvt-unicode's idea of C<LC_CTYPE>.
374
375 printf '\e]701;%s\007' ja_JP.SJIS
376
377See also the previous answer.
378
379Sometimes this capability is rather handy when you want to work in
380one locale (e.g. C<de_DE.UTF-8>) but some programs don't support it
381(e.g. UTF-8). For example, I use this script to start C<xjdic>, which
382first switches to a locale supported by xjdic and back later:
383
384 printf '\e]701;%s\007' ja_JP.SJIS
385 xjdic -js
386 printf '\e]701;%s\007' de_DE.UTF-8
387
388You can also use xterm's C<luit> program, which usually works fine, except
389for some locales where character width differs between program- and
390rxvt-unicode-locales.
391
392=item Can I switch the fonts at runtime?
393
394Yes, using an escape sequence. Try something like this, which has the same
395effect as using the C<-fn> switch, and takes effect immediately:
396
397 printf '\e]50;%s\007' "9x15bold,xft:Kochi Gothic"
398
399This is useful if you e.g. work primarily with japanese (and prefer a
400japanese font), but you have to switch to chinese temporarily, where
401japanese fonts would only be in your way.
402
403You can think of this as a kind of manual ISO-2022 switching.
404
405=item Why do italic characters look as if clipped?
406
407Many fonts have difficulties with italic characters and hinting. For
408example, the otherwise very nicely hinted font C<xft:Bitstream Vera Sans
409Mono> completely fails in it's italic face. A workaround might be to
410enable freetype autohinting, i.e. like this:
411
412 URxvt.italicFont: xft:Bitstream Vera Sans Mono:italic:autohint=true
413 URxvt.boldItalicFont: xft:Bitstream Vera Sans Mono:bold:italic:autohint=true
414
415=item My input method wants <some encoding> but I want UTF-8, what can I do?
416
417You can specify separate locales for the input method and the rest of the
418terminal, using the resource C<imlocale>:
419
420 URxvt*imlocale: ja_JP.EUC-JP
421
422Now you can start your terminal with C<LC_CTYPE=ja_JP.UTF-8> and still
423use your input method. Please note, however, that you will not be able to
424input characters outside C<EUC-JP> in a normal way then, as your input
425method limits you.
426
427=item Rxvt-unicode crashes when the X Input Method changes or exits.
428
429Unfortunately, this is unavoidable, as the XIM protocol is racy by
430design. Applications can avoid some crashes at the expense of memory
431leaks, and Input Methods can avoid some crashes by careful ordering at
432exit time. B<kinput2> (and derived input methods) generally succeeds,
433while B<SCIM> (or similar input methods) fails. In the end, however,
434crashes cannot be completely avoided even if both sides cooperate.
435
436So the only workaround is not to kill your Input Method Servers.
437
438=item Rxvt-unicode uses gobs of memory, how can I reduce that?
439
440Rxvt-unicode tries to obey the rule of not charging you for something you
441don't use. One thing you should try is to configure out all settings that
442you don't need, for example, Xft support is a resource hog by design,
443when used. Compiling it out ensures that no Xft font will be loaded
444accidentally when rxvt-unicode tries to find a font for your characters.
445
446Also, many people (me included) like large windows and even larger
447scrollback buffers: Without C<--enable-unicode3>, rxvt-unicode will use
4486 bytes per screen cell. For a 160x?? window this amounts to almost a
449kilobyte per line. A scrollback buffer of 10000 lines will then (if full)
450use 10 Megabytes of memory. With C<--enable-unicode3> it gets worse, as
451rxvt-unicode then uses 8 bytes per screen cell.
452
453=item Can I speed up Xft rendering somehow?
454
455Yes, the most obvious way to speed it up is to avoid Xft entirely, as
456it is simply slow. If you still want Xft fonts you might try to disable
457antialiasing (by appending C<:antialiasing=false>), which saves lots of
458memory and also speeds up rendering considerably.
459
460=item Rxvt-unicode doesn't seem to anti-alias its fonts, what is wrong?
461
462Rxvt-unicode will use whatever you specify as a font. If it needs to
463fall back to it's default font search list it will prefer X11 core
464fonts, because they are small and fast, and then use Xft fonts. It has
465antialiasing disabled for most of them, because the author thinks they
466look best that way.
467
468If you want antialiasing, you have to specify the fonts manually.
469
470=item Mouse cut/paste suddenly no longer works.
471
472Make sure that mouse reporting is actually turned off since killing
473some editors prematurely may leave the mouse in mouse report mode. I've
474heard that tcsh may use mouse reporting unless it otherwise specified. A
475quick check is to see if cut/paste works when the Alt or Shift keys are
476depressed. See @@RXVT_NAME@@(7)
477
478=item What's with this bold/blink stuff?
479
480If no bold colour is set via C<colorBD:>, bold will invert text using the
481standard foreground colour.
482
483For the standard background colour, blinking will actually make the
484text blink when compiled with C<--enable-blinking>. with standard
485colours. Without C<--enable-blinking>, the blink attribute will be
486ignored.
487
488On ANSI colours, bold/blink attributes are used to set high-intensity
489foreground/background colors.
490
491color0-7 are the low-intensity colors.
492
493color8-15 are the corresponding high-intensity colors.
494
495=item I don't like the screen colors. How do I change them?
496
497You can change the screen colors at run-time using F<~/.Xdefaults>
498resources (or as long-options).
499
500Here are values that are supposed to resemble a VGA screen,
501including the murky brown that passes for low-intensity yellow:
502
503 URxvt.color0: #000000
504 URxvt.color1: #A80000
505 URxvt.color2: #00A800
506 URxvt.color3: #A8A800
507 URxvt.color4: #0000A8
508 URxvt.color5: #A800A8
509 URxvt.color6: #00A8A8
510 URxvt.color7: #A8A8A8
511
512 URxvt.color8: #000054
513 URxvt.color9: #FF0054
514 URxvt.color10: #00FF54
515 URxvt.color11: #FFFF54
516 URxvt.color12: #0000FF
517 URxvt.color13: #FF00FF
518 URxvt.color14: #00FFFF
519 URxvt.color15: #FFFFFF
520
521And here is a more complete set of non-standard colors described (not by
522me) as "pretty girly".
523
524 URxvt.cursorColor: #dc74d1
525 URxvt.pointerColor: #dc74d1
526 URxvt.background: #0e0e0e
527 URxvt.foreground: #4ad5e1
528 URxvt.color0: #000000
529 URxvt.color8: #8b8f93
530 URxvt.color1: #dc74d1
531 URxvt.color9: #dc74d1
532 URxvt.color2: #0eb8c7
533 URxvt.color10: #0eb8c7
534 URxvt.color3: #dfe37e
535 URxvt.color11: #dfe37e
536 URxvt.color5: #9e88f0
537 URxvt.color13: #9e88f0
538 URxvt.color6: #73f7ff
539 URxvt.color14: #73f7ff
540 URxvt.color7: #e1dddd
541 URxvt.color15: #e1dddd
542
543=item How can I start @@RXVT_NAME@@d in a race-free way?
544
545Despite it's name, @@RXVT_NAME@@d is not a real daemon, but more like a
546server that answers @@RXVT_NAME@@c's requests, so it doesn't background
547itself.
548
549To ensure @@RXVT_NAME@@d is listening on it's socket, you can use the
550following method to wait for the startup message before continuing:
551
552 { @@RXVT_NAME@@d & } | read
553
554=item What's with the strange Backspace/Delete key behaviour?
555
556Assuming that the physical Backspace key corresponds to the
557BackSpace keysym (not likely for Linux ... see the following
558question) there are two standard values that can be used for
559Backspace: C<^H> and C<^?>.
560
561Historically, either value is correct, but rxvt-unicode adopts the debian
562policy of using C<^?> when unsure, because it's the one only only correct
563choice :).
564
565Rxvt-unicode tries to inherit the current stty settings and uses the value
566of `erase' to guess the value for backspace. If rxvt-unicode wasn't
567started from a terminal (say, from a menu or by remote shell), then the
568system value of `erase', which corresponds to CERASE in <termios.h>, will
569be used (which may not be the same as your stty setting).
570
571For starting a new rxvt-unicode:
572
573 # use Backspace = ^H
574 $ stty erase ^H
575 $ @@RXVT_NAME@@
576
577 # use Backspace = ^?
578 $ stty erase ^?
579 $ @@RXVT_NAME@@
580
581Toggle with C<ESC [ 36 h> / C<ESC [ 36 l> as documented in @@RXVT_NAME@@(7).
582
583For an existing rxvt-unicode:
584
585 # use Backspace = ^H
586 $ stty erase ^H
587 $ echo -n "^[[36h"
588
589 # use Backspace = ^?
590 $ stty erase ^?
591 $ echo -n "^[[36l"
592
593This helps satisfy some of the Backspace discrepancies that occur, but
594if you use Backspace = C<^H>, make sure that the termcap/terminfo value
595properly reflects that.
596
597The Delete key is a another casualty of the ill-defined Backspace problem.
598To avoid confusion between the Backspace and Delete keys, the Delete
599key has been assigned an escape sequence to match the vt100 for Execute
600(C<ESC [ 3 ~>) and is in the supplied termcap/terminfo.
601
602Some other Backspace problems:
603
604some editors use termcap/terminfo,
605some editors (vim I'm told) expect Backspace = ^H,
606GNU Emacs (and Emacs-like editors) use ^H for help.
607
608Perhaps someday this will all be resolved in a consistent manner.
609
610=item I don't like the key-bindings. How do I change them?
611
612There are some compile-time selections available via configure. Unless
613you have run "configure" with the C<--disable-resources> option you can
614use the `keysym' resource to alter the keystrings associated with keysyms.
615
616Here's an example for a URxvt session started using C<@@RXVT_NAME@@ -name URxvt>
617
618 URxvt.keysym.Home: \033[1~
619 URxvt.keysym.End: \033[4~
620 URxvt.keysym.C-apostrophe: \033<C-'>
621 URxvt.keysym.C-slash: \033<C-/>
622 URxvt.keysym.C-semicolon: \033<C-;>
623 URxvt.keysym.C-grave: \033<C-`>
624 URxvt.keysym.C-comma: \033<C-,>
625 URxvt.keysym.C-period: \033<C-.>
626 URxvt.keysym.C-0x60: \033<C-`>
627 URxvt.keysym.C-Tab: \033<C-Tab>
628 URxvt.keysym.C-Return: \033<C-Return>
629 URxvt.keysym.S-Return: \033<S-Return>
630 URxvt.keysym.S-space: \033<S-Space>
631 URxvt.keysym.M-Up: \033<M-Up>
632 URxvt.keysym.M-Down: \033<M-Down>
633 URxvt.keysym.M-Left: \033<M-Left>
634 URxvt.keysym.M-Right: \033<M-Right>
635 URxvt.keysym.M-C-0: list \033<M-C- 0123456789 >
636 URxvt.keysym.M-C-a: list \033<M-C- abcdefghijklmnopqrstuvwxyz >
637 URxvt.keysym.F12: command:\033]701;zh_CN.GBK\007
638
639See some more examples in the documentation for the B<keysym> resource.
640
641=item I'm using keyboard model XXX that has extra Prior/Next/Insert keys.
642How do I make use of them? For example, the Sun Keyboard type 4
643has the following mappings that rxvt-unicode doesn't recognize.
644
645 KP_Insert == Insert
646 F22 == Print
647 F27 == Home
648 F29 == Prior
649 F33 == End
650 F35 == Next
651
652Rather than have rxvt-unicode try to accommodate all the various possible
653keyboard mappings, it is better to use `xmodmap' to remap the keys as
654required for your particular machine.
655
656=item How do I distinguish wether I'm running rxvt-unicode or a regular xterm?
657I need this to decide about setting colors etc.
658
659rxvt and rxvt-unicode always export the variable "COLORTERM", so you can
660check and see if that is set. Note that several programs, JED, slrn,
661Midnight Commander automatically check this variable to decide whether or
662not to use color.
663
664=item How do I set the correct, full IP address for the DISPLAY variable?
665
666If you've compiled rxvt-unicode with DISPLAY_IS_IP and have enabled
667insecure mode then it is possible to use the following shell script
668snippets to correctly set the display. If your version of rxvt-unicode
669wasn't also compiled with ESCZ_ANSWER (as assumed in these snippets) then
670the COLORTERM variable can be used to distinguish rxvt-unicode from a
671regular xterm.
672
673Courtesy of Chuck Blake <cblake@BBN.COM> with the following shell script
674snippets:
675
676 # Bourne/Korn/POSIX family of shells:
677 [ ${TERM:-foo} = foo ] && TERM=xterm # assume an xterm if we don't know
678 if [ ${TERM:-foo} = xterm ]; then
679 stty -icanon -echo min 0 time 15 # see if enhanced rxvt or not
680 echo -n '^[Z'
681 read term_id
682 stty icanon echo
683 if [ ""${term_id} = '^[[?1;2C' -a ${DISPLAY:-foo} = foo ]; then
684 echo -n '^[[7n' # query the rxvt we are in for the DISPLAY string
685 read DISPLAY # set it in our local shell
686 fi
687 fi
688
689=item How do I compile the manual pages for myself?
690
691You need to have a recent version of perl installed as F</usr/bin/perl>,
692one that comes with F<pod2man>, F<pod2text> and F<pod2html>. Then go to
693the doc subdirectory and enter C<make alldoc>.
694
695=item My question isn't answered here, can I ask a human?
696
697Before sending me mail, you could go to IRC: C<irc.freenode.net>,
698channel C<#rxvt-unicode> has some rxvt-unicode enthusiasts that might be
699interested in learning about new and exciting problems (but not FAQs :).
700
701=back
702
703=head1 RXVT TECHNICAL REFERENCE
15 704
16=head1 DESCRIPTION 705=head1 DESCRIPTION
17 706
18The rest of this document describes various technical aspects of 707The rest of this document describes various technical aspects of
19B<rxvt-unicode>. First the description of supported command sequences, 708B<rxvt-unicode>. First the description of supported command sequences,
20followed by menu and pixmap support and last by a description of all 709followed by menu and pixmap support and last by a description of all
21features selectable at C<configure> time. 710features selectable at C<configure> time.
22 711
23=head1 RXVT TECHNICAL REFERENCE
24
25=head1 Definitions 712=head1 Definitions
26 713
27=over 4 714=over 4
28 715
29=item B<< C<c> >> 716=item B<< C<c> >>
157Single Shift Select of G3 Character Set (SS3): affects next character 844Single Shift Select of G3 Character Set (SS3): affects next character
158only I<unimplemented> 845only I<unimplemented>
159 846
160=item B<< C<ESC Z> >> 847=item B<< C<ESC Z> >>
161 848
162Obsolete form of returns: B<< C<ESC[?1;2C> >> I<rxvt-unicode compile-time option> 849Obsolete form of returns: B<< C<ESC [ ? 1 ; 2 C> >> I<rxvt-unicode compile-time option>
163 850
164=item B<< C<ESC c> >> 851=item B<< C<ESC c> >>
165 852
166Full reset (RIS) 853Full reset (RIS)
167 854
171 858
172=item B<< C<ESC o> >> 859=item B<< C<ESC o> >>
173 860
174Invoke the G3 Character Set (LS3) 861Invoke the G3 Character Set (LS3)
175 862
176=item B<< C<ESC> ( C> >> 863=item B<< C<ESC ( C> >>
177 864
178Designate G0 Character Set (ISO 2022), see below for values of C<C>. 865Designate G0 Character Set (ISO 2022), see below for values of C<C>.
179 866
180=item B<< C<ESC> ) C> >> 867=item B<< C<ESC ) C> >>
181 868
182Designate G1 Character Set (ISO 2022), see below for values of C<C>. 869Designate G1 Character Set (ISO 2022), see below for values of C<C>.
183 870
184=item B<< C<ESC * C> >> 871=item B<< C<ESC * C> >>
185 872
326 1013
327=item B<< C<ESC [ Ps c> >> 1014=item B<< C<ESC [ Ps c> >>
328 1015
329Send Device Attributes (DA) 1016Send Device Attributes (DA)
330B<< C<Ps = 0> >> (or omitted): request attributes from terminal 1017B<< C<Ps = 0> >> (or omitted): request attributes from terminal
331returns: B<< C<ESC[?1;2c> >> (``I am a VT100 with Advanced Video 1018returns: B<< C<ESC [ ? 1 ; 2 c> >> (``I am a VT100 with Advanced Video
332Option'') 1019Option'')
333 1020
334=item B<< C<ESC [ Ps d> >> 1021=item B<< C<ESC [ Ps d> >>
335 1022
336Cursor to Line B<< C<Ps> >> (VPA) 1023Cursor to Line B<< C<Ps> >> (VPA)
452 1139
453=item B<< C<ESC [ s> >> 1140=item B<< C<ESC [ s> >>
454 1141
455Save Cursor (SC) 1142Save Cursor (SC)
456 1143
1144=item B<< C<ESC [ Ps;Pt t> >>
1145
1146Window Operations
1147
1148=begin table
1149
1150 B<< C<Ps = 1> >> Deiconify (map) window
1151 B<< C<Ps = 2> >> Iconify window
1152 B<< C<Ps = 3> >> B<< C<ESC [ 3 ; X ; Y t> >> Move window to (X|Y)
1153 B<< C<Ps = 4> >> B<< C<ESC [ 4 ; H ; W t> >> Resize to WxH pixels
1154 B<< C<Ps = 5> >> Raise window
1155 B<< C<Ps = 6> >> Lower window
1156 B<< C<Ps = 7> >> Refresh screen once
1157 B<< C<Ps = 8> >> B<< C<ESC [ 8 ; R ; C t> >> Resize to R rows and C columns
1158 B<< C<Ps = 11> >> Report window state (responds with C<Ps = 1> or C<Ps = 2>)
1159 B<< C<Ps = 13> >> Report window position (responds with C<Ps = 3>)
1160 B<< C<Ps = 14> >> Report window pixel size (responds with C<Ps = 4>)
1161 B<< C<Ps = 18> >> Report window text size (responds with C<Ps = 7>)
1162 B<< C<Ps = 19> >> Currently the same as C<Ps = 18>, but responds with C<Ps = 9>
1163 B<< C<Ps = 20> >> Reports icon label (B<< C<ESC ] L NAME \234> >>)
1164 B<< C<Ps = 21> >> Reports window title (B<< C<ESC ] l NAME \234> >>)
1165 B<< C<Ps = 24..> >> Set window height to C<Ps> rows
1166
1167=end table
1168
1169=item B<< C<ESC [ u> >>
1170
1171Restore Cursor
1172
457=item B<< C<ESC [ Ps x> >> 1173=item B<< C<ESC [ Ps x> >>
458 1174
459Request Terminal Parameters (DECREQTPARM) 1175Request Terminal Parameters (DECREQTPARM)
460
461=item B<< C<ESC [ u> >>
462
463Restore Cursor
464 1176
465=back 1177=back
466 1178
467X<PrivateModes> 1179X<PrivateModes>
468 1180
837 1549
838=item B<< [title:+I<string>] >> 1550=item B<< [title:+I<string>] >>
839 1551
840set the current menuBar's title to I<string>, which may contain the 1552set the current menuBar's title to I<string>, which may contain the
841following format specifiers: 1553following format specifiers:
842B<%%> : literal B<%> character 1554
843B<%n> : rxvt name (as per the B<-name> command-line option) 1555 B<%n> rxvt name (as per the B<-name> command-line option)
844B<%v> : rxvt version 1556 B<%v> rxvt version
1557 B<%%> literal B<%> character
845 1558
846=item B<[done]> 1559=item B<[done]>
847 1560
848set menuBar access as B<readonly>. 1561set menuBar access as B<readonly>.
849End-of-file tag for B<< [read:+I<file>] >> operations. 1562End-of-file tag for B<< [read:+I<file>] >> operations.
995 1708
996As a convenience for the many Emacs-type editors, I<action> may start 1709As a convenience for the many Emacs-type editors, I<action> may start
997with B<M-> (eg, B<M-$> is equivalent to B<\E$>) and a B<CR> will be 1710with B<M-> (eg, B<M-$> is equivalent to B<\E$>) and a B<CR> will be
998appended if missed from B<M-x> commands. 1711appended if missed from B<M-x> commands.
999 1712
1000As a convenience for issuing XTerm B<ESC]> sequences from a menubar (or 1713As a convenience for issuing XTerm B<ESC ]> sequences from a menubar (or
1001quick arrow), a B<BEL> (B<^G>) will be appended if needed. 1714quick arrow), a B<BEL> (B<^G>) will be appended if needed.
1002 1715
1003=over 4 1716=over 4
1004 1717
1005=item For example, 1718=item For example,
1479you use an X11 font requiring one of these encodings. 2192you use an X11 font requiring one of these encodings.
1480 2193
1481=begin table 2194=begin table
1482 2195
1483 all all available codeset groups 2196 all all available codeset groups
1484 cn common chinese encodings 2197 zh common chinese encodings
1485 cn_ext rarely used but very big chinese encodigs 2198 zh_ext rarely used but very big chinese encodigs
1486 jp common japanese encodings 2199 jp common japanese encodings
1487 jp_ext rarely used but big japanese encodings 2200 jp_ext rarely used but big japanese encodings
1488 kr korean encodings 2201 kr korean encodings
1489 2202
1490=end table 2203=end table
1514composite characters. This is required for proper viewing of text 2227composite characters. This is required for proper viewing of text
1515where accents are encoded as seperate unicode characters. This is 2228where accents are encoded as seperate unicode characters. This is
1516done by using precomposited characters when available or creating 2229done by using precomposited characters when available or creating
1517new pseudo-characters when no precomposed form exists. 2230new pseudo-characters when no precomposed form exists.
1518 2231
1519Without --enable-unicode3, the number of additional precomposed 2232Without --enable-unicode3, the number of additional precomposed characters
1520characters is rather limited (2048, if this is full, rxvt will use the 2233is rather limited (2048, if this is full, rxvt-unicode will use the
1521private use area, extending the number of combinations to 8448). With 2234private use area, extending the number of combinations to 8448). With
1522--enable-unicode3, no practical limit exists. This will also enable 2235--enable-unicode3, no practical limit exists.
1523storage of characters >65535. 2236
2237This option will also enable storage (but not display) of characters
2238beyond plane 0 (>65535) when --enable-unicode3 was not specified.
1524 2239
1525The combining table also contains entries for arabic presentation forms, 2240The combining table also contains entries for arabic presentation forms,
1526but these are not currently used. Bug me if you want these to be used. 2241but these are not currently used. Bug me if you want these to be used (and
2242tell me how these are to be used...).
1527 2243
1528=item --enable-fallback(=CLASS) 2244=item --enable-fallback(=CLASS)
1529 2245
1530When reading resource settings, also read settings for class CLASS 2246When reading resource settings, also read settings for class CLASS
1531(default: Rxvt). To disable resource fallback use --disable-fallback. 2247(default: Rxvt). To disable resource fallback use --disable-fallback.
1623Remove all resources checking. 2339Remove all resources checking.
1624 2340
1625=item --enable-xgetdefault 2341=item --enable-xgetdefault
1626 2342
1627Make resources checking via XGetDefault() instead of our small 2343Make resources checking via XGetDefault() instead of our small
1628version which only checks ~/.Xdefaults, or if that doesn't exist 2344version which only checks ~/.Xdefaults, or if that doesn't exist then
1629then ~/.Xresources. 2345~/.Xresources.
2346
2347Please note that nowadays, things like XIM will automatically pull in and
2348use the full X resource manager, so the overhead of using it might be very
2349small, if nonexistant.
1630 2350
1631=item --enable-strings 2351=item --enable-strings
1632 2352
1633Add support for our possibly faster memset() function and other 2353Add support for our possibly faster memset() function and other
1634various routines, overriding your system's versions which may 2354various routines, overriding your system's versions which may
1644 2364
1645Add support for many small features that are not essential but nice to 2365Add support for many small features that are not essential but nice to
1646have. Normally you want this, but for very small binaries you may want to 2366have. Normally you want this, but for very small binaries you may want to
1647disable this. 2367disable this.
1648 2368
2369A non-exhaustive list of features enabled by C<--enable-frills> (possibly
2370in combination with other switches) is:
2371
2372 MWM-hints
2373 seperate underline colour
2374 settable border widths and borderless switch
2375 settable extra linespacing
2376 extra window properties (e.g. UTF-8 window names and PID)
2377 iso-14755-2 and -3, and visual feedback
2378 backindex and forwardindex escape sequence
2379 window op and locale change escape sequences
2380 tripleclickwords
2381 settable insecure mode
2382 keysym remapping support
2383
1649=item --enable-iso14755 2384=item --enable-iso14755
1650 2385
1651Enable extended ISO 14755 support (see @@RXVT_NAME@@(1), or 2386Enable extended ISO 14755 support (see @@RXVT_NAME@@(1), or
1652F<doc/rxvt.1.txt>). Basic support (section 5.1) is enabled by 2387F<doc/rxvt.1.txt>). Basic support (section 5.1) is enabled by
1653C<--enable-frills>, while support for 5.2, 5.3 and 5.4 is enabled with 2388C<--enable-frills>, while support for 5.2, 5.3 and 5.4 is enabled with
1654this switch. 2389this switch.
1655 2390
1656=item --enable-linespace
1657
1658Add support to provide user specified line spacing between text rows.
1659
1660=item --enable-keepscrolling 2391=item --enable-keepscrolling
1661 2392
1662Add support for continual scrolling of the display when you hold 2393Add support for continual scrolling of the display when you hold
1663the mouse button down on a scrollbar arrow. 2394the mouse button down on a scrollbar arrow.
1664 2395
1705 2436
1706Add support to have the pointer disappear when typing or inactive. 2437Add support to have the pointer disappear when typing or inactive.
1707 2438
1708=item --with-name=NAME 2439=item --with-name=NAME
1709 2440
1710Set the basename for the installed binaries (default: urxvt, resulting in 2441Set the basename for the installed binaries (default: C<urxvt>, resulting
1711urxvt, urxvtd etc.). Specify --with-name=rxvt to replace rxvt. 2442in C<urxvt>, C<urxvtd> etc.). Specify C<--with-name=rxvt> to replace with
2443C<rxvt>.
1712 2444
1713=item --with-term=NAME 2445=item --with-term=NAME
1714 2446
1715Change the environmental variable for the terminal to NAME (default 2447Change the environmental variable for the terminal to NAME (default
1716"rxvt") 2448C<rxvt-unicode>)
1717 2449
1718=item --with-terminfo=PATH 2450=item --with-terminfo=PATH
1719 2451
1720Change the environmental variable for the path to the terminfo tree to 2452Change the environmental variable for the path to the terminfo tree to
1721PATH. 2453PATH.

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