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Revision: 1.11
Committed: Mon Feb 14 18:47:54 2005 UTC (19 years, 3 months ago) by root
Branch: MAIN
CVS Tags: rel-5_1
Changes since 1.10: +11 -11 lines
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# Content
1 FREQUENTLY ASKED QUESTIONS
2 How do I know which rxvt-unicode version I'm using?
3 The version number is displayed with the usage (-h). Also the escape
4 sequence "ESC [ 8 n" sets the window title to the version number.
5
6 I am using Debian GNU/Linux and have a problem...
7 The Debian GNU/Linux package of rxvt-unicode contains large patches
8 that considerably change the behaviour of rxvt-unicode. Before
9 reporting a bug to the original rxvt-unicode author please download
10 and install the genuine version
11 (<http://software.schmorp.de#rxvt-unicode>) and try to reproduce the
12 problem. If you cannot, chances are that the problems are specific
13 to Debian GNU/Linux, in which case it should be reported via the
14 Debian Bug Tracking System (use "reportbug" to report the bug).
15
16 For other problems that also affect the Debian package, you can and
17 probably should use the Debian BTS, too, because, after all, it's
18 also a bug in the Debian version and it serves as a reminder for
19 other users that might encounter the same issue.
20
21 When I log-in to another system it tells me about missing terminfo data?
22 The terminal description used by rxvt-unicode is not as widely
23 available as that for xterm, or even rxvt (for which the same
24 problem often arises).
25
26 The correct solution for this problem is to install the terminfo,
27 this can be done like this (with ncurses' infocmp):
28
29 REMOTE=remotesystem.domain
30 infocmp rxvt-unicode | ssh $REMOTE "cat >/tmp/ti && tic /tmp/ti"
31
32 ... or by installing rxvt-unicode normally on the remote system,
33
34 If you cannot or do not want to do this, then you can simply set
35 "TERM=rxvt" or even "TERM=xterm", and live with the small number of
36 problems arising, which includes wrong keymapping, less and
37 different colours and some refresh errors in fullscreen
38 applications. It's a nice quick-and-dirty workaround for rare cases,
39 though.
40
41 If you always want to do this (and are fine with the consequences)
42 you can either recompile rxvt-unicode with the desired TERM value or
43 use a resource to set it:
44
45 URxvt.termName: rxvt
46
47 If you don't plan to use rxvt (quite common...) you could also
48 replace the rxvt terminfo file with the rxvt-unicode one.
49
50 "bash"'s readline does not work correctly under rxvt.
51 I need a termcap file entry.
52 One reason you might want this is that some distributions or
53 operating systems still compile some programs using the
54 long-obsoleted termcap library (Fedora Core's bash is one example)
55 and rely on a termcap entry for "rxvt-unicode".
56
57 You could use rxvt's termcap entry with resonable results in many
58 cases. You can also create a termcap entry by using terminfo's
59 infocmp program like this:
60
61 infocmp -C rxvt-unicode
62
63 Or you could use this termcap entry, generated by the command above:
64
65 rxvt-unicode|rxvt-unicode terminal (X Window System):\
66 :am:bw:eo:km:mi:ms:xn:xo:\
67 :co#80:it#8:li#24:lm#0:\
68 :AL=\E[%dL:DC=\E[%dP:DL=\E[%dM:DO=\E[%dB:IC=\E[%d@:\
69 :K1=\EOw:K2=\EOu:K3=\EOy:K4=\EOq:K5=\EOs:LE=\E[%dD:\
70 :RI=\E[%dC:SF=\E[%dS:SR=\E[%dT:UP=\E[%dA:ae=^O:al=\E[L:\
71 :as=^N:bl=^G:cd=\E[J:ce=\E[K:cl=\E[H\E[2J:cm=\E[%i%d;%dH:\
72 :cr=^M:cs=\E[%i%d;%dr:ct=\E[3g:dc=\E[P:dl=\E[M:do=^J:\
73 :ec=\E[%dX:ei=\E[4l:ho=\E[H:i1=\E[?47l\E=\E[?1l:ic=\E[@:\
74 :im=\E[4h:is=\E[r\E[m\E[2J\E[H\E[?7h\E[?1;3;4;6l\E[4l:\
75 :k1=\E[11~:k2=\E[12~:k3=\E[13~:k4=\E[14~:k5=\E[15~:\
76 :k6=\E[17~:k7=\E[18~:k8=\E[19~:k9=\E[20~:kD=\E[3~:\
77 :kI=\E[2~:kN=\E[6~:kP=\E[5~:kb=\177:kd=\EOB:ke=\E[?1l\E>:\
78 :kh=\E[7~:kl=\EOD:kr=\EOC:ks=\E[?1h\E=:ku=\EOA:le=^H:\
79 :mb=\E[5m:md=\E[1m:me=\E[m\017:mr=\E[7m:nd=\E[C:rc=\E8:\
80 :sc=\E7:se=\E[27m:sf=^J:so=\E[7m:sr=\EM:st=\EH:ta=^I:\
81 :te=\E[r\E[?1049l:ti=\E[?1049h:ue=\E[24m:up=\E[A:\
82 :us=\E[4m:vb=\E[?5h\E[?5l:ve=\E[?25h:vi=\E[?25l:\
83 :vs=\E[?25h:
84
85 Why does "ls" no longer have coloured output?
86 The "ls" in the GNU coreutils unfortunately doesn't use terminfo to
87 decide wether a terminal has colour, but uses it's own configuration
88 file. Needless to say, "rxvt-unicode" is not in it's default file
89 (among with most other terminals supporting colour). Either add:
90
91 TERM rxvt-unicode
92
93 to "/etc/DIR_COLORS" or simply add:
94
95 alias ls='ls --color=auto'
96
97 to your ".profile" or ".bashrc".
98
99 Why doesn't vim/emacs etc. use the 88 colour mode?
100 Why doesn't vim/emacs etc. make use of italic?
101 Why are the secondary screen-related options not working properly?
102 Make sure you are using "TERM=rxvt-unicode". Some pre-packaged
103 distributions (most notably Debian GNU/Linux) break rxvt-unicode by
104 setting "TERM" to "rxvt", which doesn't have these extra features.
105 Unfortunately, some of these (most notably, again, Debian GNU/Linux)
106 furthermore fail to even install the "rxvt-unicode" terminfo file,
107 so you will need to install it on your own (See the question When I
108 log-in to another system it tells me about missing terminfo data? on
109 how to do this).
110
111 My numerical keypad acts weird and generates differing output?
112 Some Debian GNUL/Linux users seem to have this problem, although no
113 specific details were reported so far. It is possible that this is
114 caused by the wrong "TERM" setting, although the details of wether
115 and how this can happen are unknown, as "TERM=rxvt" should offer a
116 compatible keymap. See the answer to the previous question, and
117 please report if that helped.
118
119 Rxvt-unicode does not seem to understand the selected encoding?
120 Unicode does not seem to work?
121 If you encounter strange problems like typing an accented character
122 but getting two unrelated other characters or similar, or if program
123 output is subtly garbled, then you should check your locale
124 settings.
125
126 Rxvt-unicode must be started with the same "LC_CTYPE" setting as the
127 programs. Often rxvt-unicode is started in the "C" locale, while the
128 login script running within the rxvt-unicode window changes the
129 locale to something else, e.g. "en_GB.UTF-8". Needless to say, this
130 is not going to work.
131
132 The best thing is to fix your startup environment, as you will
133 likely run into other problems. If nothing works you can try this in
134 your .profile.
135
136 printf '\e]701;%s\007' "$LC_CTYPE"
137
138 If this doesn't work, then maybe you use a "LC_CTYPE" specification
139 not supported on your systems. Some systems have a "locale" command
140 which displays this (also, "perl -e0" can be used to check locale
141 settings, as it will complain loudly if it cannot set the locale).
142 If it displays something like:
143
144 locale: Cannot set LC_CTYPE to default locale: ...
145
146 Then the locale you specified is not supported on your system.
147
148 If nothing works and you are sure that everything is set correctly
149 then you will need to remember a little known fact: Some programs
150 just don't support locales :(
151
152 Why do some characters look so much different than others?
153 How does rxvt-unicode choose fonts?
154 Most fonts do not contain the full range of Unicode, which is fine.
155 Chances are that the font you (or the admin/package maintainer of
156 your system/os) have specified does not cover all the characters you
157 want to display.
158
159 rxvt-unicode makes a best-effort try at finding a replacement font.
160 Often the result is fine, but sometimes the chosen font looks
161 bad/ugly/wrong. Some fonts have totally strange characters that
162 don't resemble the correct glyph at all, and rxvt-unicode lacks the
163 artificial intelligence to detect that a specific glyph is wrong: it
164 has to believe the font that the characters it claims to contain
165 indeed look correct.
166
167 In that case, select a font of your taste and add it to the font
168 list, e.g.:
169
170 rxvt -fn basefont,font2,font3...
171
172 When rxvt-unicode sees a character, it will first look at the base
173 font. If the base font does not contain the character, it will go to
174 the next font, and so on. Specifying your own fonts will also speed
175 up this search and use less resources within rxvt-unicode and the
176 X-server.
177
178 The only limitation is that none of the fonts may be larger than the
179 base font, as the base font defines the terminal character cell
180 size, which must be the same due to the way terminals work.
181
182 Why do some chinese characters look so different than others?
183 This is because there is a difference between script and language --
184 rxvt-unicode does not know which language the text that is output
185 is, as it only knows the unicode character codes. If rxvt-unicode
186 first sees a japanese/chinese character, it might choose a japanese
187 font for display. Subsequent japanese characters will use that font.
188 Now, many chinese characters aren't represented in japanese fonts,
189 so when the first non-japanese character comes up, rxvt-unicode will
190 look for a chinese font -- unfortunately at this point, it will
191 still use the japanese font for chinese characters that are also in
192 the japanese font.
193
194 The workaround is easy: just tag a chinese font at the end of your
195 font list (see the previous question). The key is to view the font
196 list as a preference list: If you expect more japanese, list a
197 japanese font first. If you expect more chinese, put a chinese font
198 first.
199
200 In the future it might be possible to switch language preferences at
201 runtime (the internal data structure has no problem with using
202 different fonts for the same character at the same time, but no
203 interface for this has been designed yet).
204
205 Until then, you might get away with switching fonts at runtime (see
206 "Can I switch the fonts at runtime?" later in this document).
207
208 Why does rxvt-unicode sometimes leave pixel droppings?
209 Most fonts were not designed for terminal use, which means that
210 character size varies a lot. A font that is otherwise fine for
211 terminal use might contain some characters that are simply too wide.
212 Rxvt-unicode will avoid these characters. For characters that are
213 just "a bit" too wide a special "careful" rendering mode is used
214 that redraws adjacent characters.
215
216 All of this requires that fonts do not lie about character sizes,
217 however: Xft fonts often draw glyphs larger than their acclaimed
218 bounding box, and rxvt-unicode has no way of detecting this (the
219 correct way is to ask for the character bounding box, which
220 unfortunately is wrong in these cases).
221
222 It's not clear (to me at least), wether this is a bug in Xft,
223 freetype, or the respective font. If you encounter this problem you
224 might try using the "-lsp" option to give the font more height. If
225 that doesn't work, you might be forced to use a different font.
226
227 All of this is not a problem when using X11 core fonts, as their
228 bounding box data is correct.
229
230 My Compose (Multi_key) key is no longer working.
231 The most common causes for this are that either your locale is not
232 set correctly, or you specified a preeditStyle that is not supported
233 by your input method. For example, if you specified OverTheSpot and
234 your input method (e.g. the default input method handling Compose
235 keys) does not support this (for instance because it is not visual),
236 then rxvt-unicode will continue without an input method.
237
238 In this case either do not specify a preeditStyle or specify more
239 than one pre-edit style, such as OverTheSpot,Root,None.
240
241 I cannot type "Ctrl-Shift-2" to get an ASCII NUL character due to ISO
242 14755
243 Either try "Ctrl-2" alone (it often is mapped to ASCII NUL even on
244 international keyboards) or simply use ISO 14755 support to your
245 advantage, typing <Ctrl-Shift-0> to get a ASCII NUL. This works for
246 other codes, too, such as "Ctrl-Shift-1-d" to type the default
247 telnet escape character and so on.
248
249 How can I keep rxvt-unicode from using reverse video so much?
250 First of all, make sure you are running with the right terminal
251 settings ("TERM=rxvt-unicode"), which will get rid of most of these
252 effects. Then make sure you have specified colours for italic and
253 bold, as otherwise rxvt-unicode might use reverse video to simulate
254 the effect:
255
256 URxvt.colorBD: white
257 URxvt.colorIT: green
258
259 Some programs assume totally weird colours (red instead of blue), how
260 can I fix that?
261 For some unexplainable reason, some rare programs assume a very
262 weird colour palette when confronted with a terminal with more than
263 the standard 8 colours (rxvt-unicode supports 88). The right fix is,
264 of course, to fix these programs not to assume non-ISO colours
265 without very good reasons.
266
267 In the meantime, you can either edit your "rxvt-unicode" terminfo
268 definition to only claim 8 colour support or use "TERM=rxvt", which
269 will fix colours but keep you from using other rxvt-unicode
270 features.
271
272 I am on FreeBSD and rxvt-unicode does not seem to work at all.
273 Rxvt-unicode requires the symbol "__STDC_ISO_10646__" to be defined
274 in your compile environment, or an implementation that implements
275 it, wether it defines the symbol or not. "__STDC_ISO_10646__"
276 requires that wchar_t is represented as unicode.
277
278 As you might have guessed, FreeBSD does neither define this symobl
279 nor does it support it. Instead, it uses it's own internal
280 representation of wchar_t. This is, of course, completely fine with
281 respect to standards.
282
283 However, "__STDC_ISO_10646__" is the only sane way to support
284 multi-language apps in an OS, as using a locale-dependent (and
285 non-standardized) representation of wchar_t makes it impossible to
286 convert between wchar_t (as used by X11 and your applications) and
287 any other encoding without implementing OS-specific-wrappers for
288 each and every locale. There simply are no APIs to convert wchar_t
289 into anything except the current locale encoding.
290
291 Some applications (such as the formidable mlterm) work around this
292 by carrying their own replacement functions for character set
293 handling with them, and either implementing OS-dependent hacks or
294 doing multiple conversions (which is slow and unreliable in case the
295 OS implements encodings slightly different than the terminal
296 emulator).
297
298 The rxvt-unicode author insists that the right way to fix this is in
299 the system libraries once and for all, instead of forcing every app
300 to carry complete replacements for them :)
301
302 How does rxvt-unicode determine the encoding to use?
303 Is there an option to switch encodings?
304 Unlike some other terminals, rxvt-unicode has no encoding switch,
305 and no specific "utf-8" mode, such as xterm. In fact, it doesn't
306 even know about UTF-8 or any other encodings with respect to
307 terminal I/O.
308
309 The reasons is that there exists a perfectly fine mechanism for
310 selecting the encoding, doing I/O and (most important) communicating
311 this to all applications so everybody agrees on character properties
312 such as width and code number. This mechanism is the *locale*.
313 Applications not using that info will have problems (for example,
314 "xterm" gets the width of characters wrong as it uses it's own,
315 locale-independent table under all locales).
316
317 Rxvt-unicode uses the "LC_CTYPE" locale category to select encoding.
318 All programs doing the same (that is, most) will automatically agree
319 in the interpretation of characters.
320
321 Unfortunately, there is no system-independent way to select locales,
322 nor is there a standard on how locale specifiers will look like.
323
324 On most systems, the content of the "LC_CTYPE" environment variable
325 contains an arbitrary string which corresponds to an
326 already-installed locale. Common names for locales are
327 "en_US.UTF-8", "de_DE.ISO-8859-15", "ja_JP.EUC-JP", i.e.
328 "language_country.encoding", but other forms (i.e. "de" or "german")
329 are also common.
330
331 Rxvt-unicode ignores all other locale categories, and except for the
332 encoding, ignores country or language-specific settings, i.e.
333 "de_DE.UTF-8" and "ja_JP.UTF-8" are the normally same to
334 rxvt-unicode.
335
336 If you want to use a specific encoding you have to make sure you
337 start rxvt-unicode with the correct "LC_CTYPE" category.
338
339 Can I switch locales at runtime?
340 Yes, using an escape sequence. Try something like this, which sets
341 rxvt-unicode's idea of "LC_CTYPE".
342
343 printf '\e]701;%s\007' ja_JP.SJIS
344
345 See also the previous answer.
346
347 Sometimes this capability is rather handy when you want to work in
348 one locale (e.g. "de_DE.UTF-8") but some programs don't support it
349 (e.g. UTF-8). For example, I use this script to start "xjdic", which
350 first switches to a locale supported by xjdic and back later:
351
352 printf '\e]701;%s\007' ja_JP.SJIS
353 xjdic -js
354 printf '\e]701;%s\007' de_DE.UTF-8
355
356 You can also use xterm's "luit" program, which usually works fine,
357 except for some locales where character width differs between
358 program- and rxvt-unicode-locales.
359
360 Can I switch the fonts at runtime?
361 Yes, using an escape sequence. Try something like this, which has
362 the same effect as using the "-fn" switch, and takes effect
363 immediately:
364
365 printf '\e]50;%s\007' "9x15bold,xft:Kochi Gothic"
366
367 This is useful if you e.g. work primarily with japanese (and prefer
368 a japanese font), but you have to switch to chinese temporarily,
369 where japanese fonts would only be in your way.
370
371 You can think of this as a kind of manual ISO-2022 switching.
372
373 Why do italic characters look as if clipped?
374 Many fonts have difficulties with italic characters and hinting. For
375 example, the otherwise very nicely hinted font "xft:Bitstream Vera
376 Sans Mono" completely fails in it's italic face. A workaround might
377 be to enable freetype autohinting, i.e. like this:
378
379 URxvt.italicFont: xft:Bitstream Vera Sans Mono:italic:autohint=true
380 URxvt.boldItalicFont: xft:Bitstream Vera Sans Mono:bold:italic:autohint=true
381
382 My input method wants <some encoding> but I want UTF-8, what can I do?
383 You can specify separate locales for the input method and the rest
384 of the terminal, using the resource "imlocale":
385
386 URxvt*imlocale: ja_JP.EUC-JP
387
388 Now you can start your terminal with "LC_CTYPE=ja_JP.UTF-8" and
389 still use your input method. Please note, however, that you will not
390 be able to input characters outside "EUC-JP" in a normal way then,
391 as your input method limits you.
392
393 Rxvt-unicode crashes when the X Input Method changes or exits.
394 Unfortunately, this is unavoidable, as the XIM protocol is racy by
395 design. Applications can avoid some crashes at the expense of memory
396 leaks, and Input Methods can avoid some crashes by careful ordering
397 at exit time. kinput2 (and derived input methods) generally
398 succeeds, while SCIM (or similar input methods) fails. In the end,
399 however, crashes cannot be completely avoided even if both sides
400 cooperate.
401
402 So the only workaround is not to kill your Input Method Servers.
403
404 Rxvt-unicode uses gobs of memory, how can I reduce that?
405 Rxvt-unicode tries to obey the rule of not charging you for
406 something you don't use. One thing you should try is to configure
407 out all settings that you don't need, for example, Xft support is a
408 resource hog by design, when used. Compiling it out ensures that no
409 Xft font will be loaded accidentally when rxvt-unicode tries to find
410 a font for your characters.
411
412 Also, many people (me included) like large windows and even larger
413 scrollback buffers: Without "--enable-unicode3", rxvt-unicode will
414 use 6 bytes per screen cell. For a 160x?? window this amounts to
415 almost a kilobyte per line. A scrollback buffer of 10000 lines will
416 then (if full) use 10 Megabytes of memory. With "--enable-unicode3"
417 it gets worse, as rxvt-unicode then uses 8 bytes per screen cell.
418
419 Can I speed up Xft rendering somehow?
420 Yes, the most obvious way to speed it up is to avoid Xft entirely,
421 as it is simply slow. If you still want Xft fonts you might try to
422 disable antialiasing (by appending ":antialiasing=false"), which
423 saves lots of memory and also speeds up rendering considerably.
424
425 Rxvt-unicode doesn't seem to anti-alias its fonts, what is wrong?
426 Rxvt-unicode will use whatever you specify as a font. If it needs to
427 fall back to it's default font search list it will prefer X11 core
428 fonts, because they are small and fast, and then use Xft fonts. It
429 has antialiasing disabled for most of them, because the author
430 thinks they look best that way.
431
432 If you want antialiasing, you have to specify the fonts manually.
433
434 Mouse cut/paste suddenly no longer works.
435 Make sure that mouse reporting is actually turned off since killing
436 some editors prematurely may leave the mouse in mouse report mode.
437 I've heard that tcsh may use mouse reporting unless it otherwise
438 specified. A quick check is to see if cut/paste works when the Alt
439 or Shift keys are depressed. See rxvt(7)
440
441 What's with this bold/blink stuff?
442 If no bold colour is set via "colorBD:", bold will invert text using
443 the standard foreground colour.
444
445 For the standard background colour, blinking will actually make the
446 text blink when compiled with "--enable-blinking". with standard
447 colours. Without "--enable-blinking", the blink attribute will be
448 ignored.
449
450 On ANSI colours, bold/blink attributes are used to set
451 high-intensity foreground/background colors.
452
453 color0-7 are the low-intensity colors.
454
455 color8-15 are the corresponding high-intensity colors.
456
457 I don't like the screen colors. How do I change them?
458 You can change the screen colors at run-time using ~/.Xdefaults
459 resources (or as long-options).
460
461 Here are values that are supposed to resemble a VGA screen,
462 including the murky brown that passes for low-intensity yellow:
463
464 URxvt.color0: #000000
465 URxvt.color1: #A80000
466 URxvt.color2: #00A800
467 URxvt.color3: #A8A800
468 URxvt.color4: #0000A8
469 URxvt.color5: #A800A8
470 URxvt.color6: #00A8A8
471 URxvt.color7: #A8A8A8
472
473 URxvt.color8: #000054
474 URxvt.color9: #FF0054
475 URxvt.color10: #00FF54
476 URxvt.color11: #FFFF54
477 URxvt.color12: #0000FF
478 URxvt.color13: #FF00FF
479 URxvt.color14: #00FFFF
480 URxvt.color15: #FFFFFF
481
482 And here is a more complete set of non-standard colors described
483 (not by me) as "pretty girly".
484
485 URxvt.cursorColor: #dc74d1
486 URxvt.pointerColor: #dc74d1
487 URxvt.background: #0e0e0e
488 URxvt.foreground: #4ad5e1
489 URxvt.color0: #000000
490 URxvt.color8: #8b8f93
491 URxvt.color1: #dc74d1
492 URxvt.color9: #dc74d1
493 URxvt.color2: #0eb8c7
494 URxvt.color10: #0eb8c7
495 URxvt.color3: #dfe37e
496 URxvt.color11: #dfe37e
497 URxvt.color5: #9e88f0
498 URxvt.color13: #9e88f0
499 URxvt.color6: #73f7ff
500 URxvt.color14: #73f7ff
501 URxvt.color7: #e1dddd
502 URxvt.color15: #e1dddd
503
504 How can I start rxvtd in a race-free way?
505 Despite it's name, rxvtd is not a real daemon, but more like a
506 server that answers rxvtc's requests, so it doesn't background
507 itself.
508
509 To ensure rxvtd is listening on it's socket, you can use the
510 following method to wait for the startup message before continuing:
511
512 { rxvtd & } | read
513
514 What's with the strange Backspace/Delete key behaviour?
515 Assuming that the physical Backspace key corresponds to the
516 BackSpace keysym (not likely for Linux ... see the following
517 question) there are two standard values that can be used for
518 Backspace: "^H" and "^?".
519
520 Historically, either value is correct, but rxvt-unicode adopts the
521 debian policy of using "^?" when unsure, because it's the one only
522 only correct choice :).
523
524 Rxvt-unicode tries to inherit the current stty settings and uses the
525 value of `erase' to guess the value for backspace. If rxvt-unicode
526 wasn't started from a terminal (say, from a menu or by remote
527 shell), then the system value of `erase', which corresponds to
528 CERASE in <termios.h>, will be used (which may not be the same as
529 your stty setting).
530
531 For starting a new rxvt-unicode:
532
533 # use Backspace = ^H
534 $ stty erase ^H
535 $ rxvt
536
537 # use Backspace = ^?
538 $ stty erase ^?
539 $ rxvt
540
541 Toggle with "ESC [ 36 h" / "ESC [ 36 l" as documented in rxvt(7).
542
543 For an existing rxvt-unicode:
544
545 # use Backspace = ^H
546 $ stty erase ^H
547 $ echo -n "^[[36h"
548
549 # use Backspace = ^?
550 $ stty erase ^?
551 $ echo -n "^[[36l"
552
553 This helps satisfy some of the Backspace discrepancies that occur,
554 but if you use Backspace = "^H", make sure that the termcap/terminfo
555 value properly reflects that.
556
557 The Delete key is a another casualty of the ill-defined Backspace
558 problem. To avoid confusion between the Backspace and Delete keys,
559 the Delete key has been assigned an escape sequence to match the
560 vt100 for Execute ("ESC [ 3 ~") and is in the supplied
561 termcap/terminfo.
562
563 Some other Backspace problems:
564
565 some editors use termcap/terminfo, some editors (vim I'm told)
566 expect Backspace = ^H, GNU Emacs (and Emacs-like editors) use ^H for
567 help.
568
569 Perhaps someday this will all be resolved in a consistent manner.
570
571 I don't like the key-bindings. How do I change them?
572 There are some compile-time selections available via configure.
573 Unless you have run "configure" with the "--disable-resources"
574 option you can use the `keysym' resource to alter the keystrings
575 associated with keysyms.
576
577 Here's an example for a URxvt session started using "rxvt -name
578 URxvt"
579
580 URxvt.keysym.Home: \033[1~
581 URxvt.keysym.End: \033[4~
582 URxvt.keysym.C-apostrophe: \033<C-'>
583 URxvt.keysym.C-slash: \033<C-/>
584 URxvt.keysym.C-semicolon: \033<C-;>
585 URxvt.keysym.C-grave: \033<C-`>
586 URxvt.keysym.C-comma: \033<C-,>
587 URxvt.keysym.C-period: \033<C-.>
588 URxvt.keysym.C-0x60: \033<C-`>
589 URxvt.keysym.C-Tab: \033<C-Tab>
590 URxvt.keysym.C-Return: \033<C-Return>
591 URxvt.keysym.S-Return: \033<S-Return>
592 URxvt.keysym.S-space: \033<S-Space>
593 URxvt.keysym.M-Up: \033<M-Up>
594 URxvt.keysym.M-Down: \033<M-Down>
595 URxvt.keysym.M-Left: \033<M-Left>
596 URxvt.keysym.M-Right: \033<M-Right>
597 URxvt.keysym.M-C-0: list \033<M-C- 0123456789 >
598 URxvt.keysym.M-C-a: list \033<M-C- abcdefghijklmnopqrstuvwxyz >
599 URxvt.keysym.F12: command:\033]701;zh_CN.GBK\007
600
601 See some more examples in the documentation for the keysym resource.
602
603 I'm using keyboard model XXX that has extra Prior/Next/Insert keys. How
604 do I make use of them? For example, the Sun Keyboard type 4 has the
605 following mappings that rxvt-unicode doesn't recognize.
606 KP_Insert == Insert
607 F22 == Print
608 F27 == Home
609 F29 == Prior
610 F33 == End
611 F35 == Next
612
613 Rather than have rxvt-unicode try to accommodate all the various
614 possible keyboard mappings, it is better to use `xmodmap' to remap
615 the keys as required for your particular machine.
616
617 How do I distinguish wether I'm running rxvt-unicode or a regular xterm?
618 I need this to decide about setting colors etc.
619 rxvt and rxvt-unicode always export the variable "COLORTERM", so you
620 can check and see if that is set. Note that several programs, JED,
621 slrn, Midnight Commander automatically check this variable to decide
622 whether or not to use color.
623
624 How do I set the correct, full IP address for the DISPLAY variable?
625 If you've compiled rxvt-unicode with DISPLAY_IS_IP and have enabled
626 insecure mode then it is possible to use the following shell script
627 snippets to correctly set the display. If your version of
628 rxvt-unicode wasn't also compiled with ESCZ_ANSWER (as assumed in
629 these snippets) then the COLORTERM variable can be used to
630 distinguish rxvt-unicode from a regular xterm.
631
632 Courtesy of Chuck Blake <cblake@BBN.COM> with the following shell
633 script snippets:
634
635 # Bourne/Korn/POSIX family of shells:
636 [ ${TERM:-foo} = foo ] && TERM=xterm # assume an xterm if we don't know
637 if [ ${TERM:-foo} = xterm ]; then
638 stty -icanon -echo min 0 time 15 # see if enhanced rxvt or not
639 echo -n '^[Z'
640 read term_id
641 stty icanon echo
642 if [ ""${term_id} = '^[[?1;2C' -a ${DISPLAY:-foo} = foo ]; then
643 echo -n '^[[7n' # query the rxvt we are in for the DISPLAY string
644 read DISPLAY # set it in our local shell
645 fi
646 fi
647
648 How do I compile the manual pages for myself?
649 You need to have a recent version of perl installed as
650 /usr/bin/perl, one that comes with pod2man, pod2text and pod2html.
651 Then go to the doc subdirectory and enter "make alldoc".
652
653 My question isn't answered here, can I ask a human?
654 Before sending me mail, you could go to IRC: "irc.freenode.net",
655 channel "#rxvt-unicode" has some rxvt-unicode enthusiasts that might
656 be interested in learning about new and exciting problems (but not
657 FAQs :).
658