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Revision 1.24 by root, Wed Jan 11 19:55:33 2006 UTC vs.
Revision 1.31 by root, Tue Jan 17 16:22:41 2006 UTC

1FREQUENTLY ASKED QUESTIONS 1FREQUENTLY ASKED QUESTIONS
2 The new selection selects pieces that are too big, how can I select
3 single words?
4 Yes. For example, if you want to select alphanumeric words, you can
5 use the following resource:
6
7 URxvt.selection.pattern-0: ([[:word:]]+)
8
9 If you click more than twice, the selection will be extended more
10 and more.
11
12 To get a selection that is very similar to the old code, try this
13 pattern:
14
15 URxvt.selection.pattern-0: ([^"&'()*,;<=>?@[\\\\]^`{|})]+)
16
17 Please also note that the *LeftClick Shift-LeftClik* combination
18 also selects words like the old code.
19
20 I don't like the new selection/popups/hotkeys/perl, how do I
21 change/disable it?
22 You can disable the perl extension completely by setting the
23 perl-ext-common resource to the empty string, which also keeps
24 rxvt-unicode from initialising perl, saving memory.
25
26 If you only want to disable specific features, you first have to
27 identify which perl extension is responsible. For this, read the
28 section PREPACKAGED EXTENSIONS in the rxvtperl(3) manpage. For
29 example, to disable the selection-popup and option-popup, specify
30 this perl-ext-common resource:
31
32 URxvt.perl-ext-common: default,-selection-popup,-option-popup
33
34 This will keep the default extensions, but disable the two popup
35 extensions. Some extensions can also be configured, for example,
36 scrollback search mode is triggered by M-s. You can move it to any
37 other combination either by setting the searchable-scrollback
38 resource:
39
40 URxvt.searchable-scrollback: CM-s
41
2 Isn't rxvt supposed to be small? Don't all those features bloat? 42 Isn't rxvt supposed to be small? Don't all those features bloat?
3 I often get asked about this, and I think, no, they didn't cause 43 I often get asked about this, and I think, no, they didn't cause
4 extra bloat. If you compare a minimal rxvt and a minimal urxvt, you 44 extra bloat. If you compare a minimal rxvt and a minimal urxvt, you
5 can see that the urxvt binary is larger (due to some encoding tables 45 can see that the urxvt binary is larger (due to some encoding tables
6 always being compiled in), but it actually uses less memory (RSS) 46 always being compiled in), but it actually uses less memory (RSS)
… …
125 of encodings built-in that increase download times and are rarely 165 of encodings built-in that increase download times and are rarely
126 used). 166 used).
127 167
128 I need to make it setuid/setgid to support utmp/ptys on my OS, is this 168 I need to make it setuid/setgid to support utmp/ptys on my OS, is this
129 safe? 169 safe?
130 Likely not. While I honestly try to make it secure, and am probably 170 It should be, starting with release 7.1. You are encouraged to
131 not bad at it, I think it is simply unreasonable to expect all of 171 properly install urxvt with privileges necessary for your OS now.
132 freetype + fontconfig + xft + xlib + perl + ... + rxvt-unicode 172
133 itself to all be secure. Also, rxvt-unicode disables some options
134 when it detects that it runs setuid or setgid, which is not nice. 173 When rxvt-unicode detects that it runs setuid or setgid, it will
135 Besides, with the embedded perl interpreter the possibility for 174 fork into a helper process for privileged operations (pty handling
136 security problems easily multiplies. 175 on some systems, utmp/wtmp/lastlog handling on others) and drop
176 privileges immediately. This is much safer than most other terminals
177 that keep privileges while running (but is more relevant to urxvt,
178 as it contains things as perl interpreters, which might be "helpful"
179 to attackers).
137 180
138 Elevated privileges are only required for utmp and pty operations on 181 This forking is done as the very first within main(), which is very
139 some systems (for example, GNU/Linux doesn't need any extra 182 early and reduces possible bugs to initialisation code run before
140 privileges for ptys, but some need it for utmp support). It is 183 main(), or things like the dynamic loader of your system, which
141 planned to mvoe this into a forked handler process, but this is not 184 should result in very little risk.
142 yet done.
143
144 So, while setuid/setgid operation is supported and not a problem on
145 your typical single-user-no-other-logins unix desktop, always
146 remember that its an awful lot of code, most of which isn't checked
147 for security issues regularly.
148 185
149 When I log-in to another system it tells me about missing terminfo data? 186 When I log-in to another system it tells me about missing terminfo data?
150 The terminal description used by rxvt-unicode is not as widely 187 The terminal description used by rxvt-unicode is not as widely
151 available as that for xterm, or even rxvt (for which the same 188 available as that for xterm, or even rxvt (for which the same
152 problem often arises). 189 problem often arises).
… …
540 577
541 My input method wants <some encoding> but I want UTF-8, what can I do? 578 My input method wants <some encoding> but I want UTF-8, what can I do?
542 You can specify separate locales for the input method and the rest 579 You can specify separate locales for the input method and the rest
543 of the terminal, using the resource "imlocale": 580 of the terminal, using the resource "imlocale":
544 581
545 URxvt*imlocale: ja_JP.EUC-JP 582 URxvt.imlocale: ja_JP.EUC-JP
546 583
547 Now you can start your terminal with "LC_CTYPE=ja_JP.UTF-8" and 584 Now you can start your terminal with "LC_CTYPE=ja_JP.UTF-8" and
548 still use your input method. Please note, however, that you will not 585 still use your input method. Please note, however, that you will not
549 be able to input characters outside "EUC-JP" in a normal way then, 586 be able to input characters outside "EUC-JP" in a normal way then,
550 as your input method limits you. 587 as your input method limits you.
… …
593 Mouse cut/paste suddenly no longer works. 630 Mouse cut/paste suddenly no longer works.
594 Make sure that mouse reporting is actually turned off since killing 631 Make sure that mouse reporting is actually turned off since killing
595 some editors prematurely may leave the mouse in mouse report mode. 632 some editors prematurely may leave the mouse in mouse report mode.
596 I've heard that tcsh may use mouse reporting unless it otherwise 633 I've heard that tcsh may use mouse reporting unless it otherwise
597 specified. A quick check is to see if cut/paste works when the Alt 634 specified. A quick check is to see if cut/paste works when the Alt
598 or Shift keys are depressed. See rxvt(7) 635 or Shift keys are depressed.
599 636
600 What's with this bold/blink stuff? 637 What's with this bold/blink stuff?
601 If no bold colour is set via "colorBD:", bold will invert text using 638 If no bold colour is set via "colorBD:", bold will invert text using
602 the standard foreground colour. 639 the standard foreground colour.
603 640
… …
689 726
690 # use Backspace = ^? 727 # use Backspace = ^?
691 $ stty erase ^? 728 $ stty erase ^?
692 $ rxvt 729 $ rxvt
693 730
694 Toggle with "ESC [ 36 h" / "ESC [ 36 l" as documented in rxvt(7). 731 Toggle with "ESC [ 36 h" / "ESC [ 36 l".
695 732
696 For an existing rxvt-unicode: 733 For an existing rxvt-unicode:
697 734
698 # use Backspace = ^H 735 # use Backspace = ^H
699 $ stty erase ^H 736 $ stty erase ^H

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