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Revision 1.22 by root, Mon Jan 9 01:54:43 2006 UTC vs.
Revision 1.26 by root, Thu Jan 12 23:11:23 2006 UTC

1FREQUENTLY ASKED QUESTIONS 1FREQUENTLY ASKED QUESTIONS
2 The new selection selects pieces that are too big/too small, can I
3 change this?
4 Yes. For example, if you want to select smaller pieces ("words") you
5 can 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 I don't like the new selection/popups/hotkeys/perl, how do I
18 change/disable it?
19 You can disable the perl extension completely by setting the
20 perl-ext-common resource to the empty string, which also keeps
21 rxvt-unicode from initialising perl, saving memory.
22
23 If you only want to disable specific features, you first have to
24 identify which perl extension is responsible. For this, read the
25 section PREPACKAGED EXTENSIONS in the rxvtperl(3) manpage. For
26 example, to disable the selection-popup and option-popup, specify
27 this perl-ext-common resource:
28
29 URxvt.perl-ext-common: default,-selection-popup,-option-popup
30
31 This will keep the default extensions, but disable the two popup
32 extensions. Some extensions can also be configured, for example,
33 scrollback search mode is triggered by M-s. You can move it to any
34 other combination either by setting the searchable-scrollback
35 resource:
36
37 URxvt.searchable-scrollback: CM-s
38
2 Isn't rxvt supposed to be small? Don't all those features bloat? 39 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 40 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 41 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 42 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) 43 always being compiled in), but it actually uses less memory (RSS)
… …
35 72
36 Compared to e.g. Eterm (5112k), aterm (3132k) and xterm (4680k), 73 Compared to e.g. Eterm (5112k), aterm (3132k) and xterm (4680k),
37 this still fares rather well. And compared to some monsters like 74 this still fares rather well. And compared to some monsters like
38 gnome-terminal (21152k + extra 4204k in separate processes) or 75 gnome-terminal (21152k + extra 4204k in separate processes) or
39 konsole (22200k + extra 43180k in daemons that stay around after 76 konsole (22200k + extra 43180k in daemons that stay around after
40 exit, plus half aminute of startup time, including the hundreds of 77 exit, plus half a minute of startup time, including the hundreds of
41 warnings it spits out), it fares extremely well *g*. 78 warnings it spits out), it fares extremely well *g*.
42 79
43 Why C++, isn't that unportable/bloated/uncool? 80 Why C++, isn't that unportable/bloated/uncool?
44 Is this a question? :) It comes up very often. The simple answer is: 81 Is this a question? :) It comes up very often. The simple answer is:
45 I had to write it, and C++ allowed me to write and maintain it in a 82 I had to write it, and C++ allowed me to write and maintain it in a
… …
127 164
128 I need to make it setuid/setgid to support utmp/ptys on my OS, is this 165 I need to make it setuid/setgid to support utmp/ptys on my OS, is this
129 safe? 166 safe?
130 Likely not. While I honestly try to make it secure, and am probably 167 Likely not. While I honestly try to make it secure, and am probably
131 not bad at it, I think it is simply unreasonable to expect all of 168 not bad at it, I think it is simply unreasonable to expect all of
132 freetype + fontconfig + xft + xlib + ... + rxvt-unicode itself to 169 freetype + fontconfig + xft + xlib + perl + ... + rxvt-unicode
133 all be secure. Also, rxvt-unicode disables some options when it 170 itself to all be secure. Also, rxvt-unicode disables some options
134 detects that it runs setuid or setgid, which is not nice. 171 when it detects that it runs setuid or setgid, which is not nice.
172 Besides, with the embedded perl interpreter the possibility for
173 security problems easily multiplies.
135 174
136 Elevated privileges are only required for utmp and pty operations on 175 Elevated privileges are only required for utmp and pty operations on
137 some systems (for example, GNU/Linux doesn't need any extra 176 some systems (for example, GNU/Linux doesn't need any extra
138 privileges for ptys, but some need it for utmp support). If 177 privileges for ptys, but some need it for utmp support). It is
139 rxvt-unicode doesn't support the library/setuid helper that your OS 178 planned to mvoe this into a forked handler process, but this is not
140 needs I'll be happy to assist you in implementing support for it. 179 yet done.
141 180
142 So, while setuid/setgid operation is supported and not a problem on 181 So, while setuid/setgid operation is supported and not a problem on
143 your typical single-user-no-other-logins unix desktop, always 182 your typical single-user-no-other-logins unix desktop, always
144 remember that its an awful lot of code, most of which isn't checked 183 remember that its an awful lot of code, most of which isn't checked
145 for security issues regularly. 184 for security issues regularly.

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