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Revision 1.37 by root, Wed Jan 11 05:29:40 2006 UTC vs.
Revision 1.41 by root, Thu Jan 12 23:11:23 2006 UTC

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18 The newest version of this document is also available on the World Wide 18 The newest version of this document is also available on the World Wide
19 Web at 19 Web at
20 <http://cvs.schmorp.de/browse/*checkout*/rxvt-unicode/doc/rxvt.7.html>. 20 <http://cvs.schmorp.de/browse/*checkout*/rxvt-unicode/doc/rxvt.7.html>.
21 21
22FREQUENTLY ASKED QUESTIONS 22FREQUENTLY ASKED QUESTIONS
23 The new selection selects pieces that are too big/too small, can I
24 change this?
25 Yes. For example, if you want to select smaller pieces ("words") you
26 can use the following resource:
27
28 URxvt.selection.pattern-0: ([[:word:]]+)
29
30 If you click more than twice, the selection will be extended more
31 and more.
32
33 To get a selection that is very similar to the old code, try this
34 pattern:
35
36 URxvt.selection.pattern-0: ([^"&'()*,;<=>?@[\\\\]^`{|})]+)
37
38 I don't like the new selection/popups/hotkeys/perl, how do I
39 change/disable it?
40 You can disable the perl extension completely by setting the
41 perl-ext-common resource to the empty string, which also keeps
42 rxvt-unicode from initialising perl, saving memory.
43
44 If you only want to disable specific features, you first have to
45 identify which perl extension is responsible. For this, read the
46 section PREPACKAGED EXTENSIONS in the rxvtperl(3) manpage. For
47 example, to disable the selection-popup and option-popup, specify
48 this perl-ext-common resource:
49
50 URxvt.perl-ext-common: default,-selection-popup,-option-popup
51
52 This will keep the default extensions, but disable the two popup
53 extensions. Some extensions can also be configured, for example,
54 scrollback search mode is triggered by M-s. You can move it to any
55 other combination either by setting the searchable-scrollback
56 resource:
57
58 URxvt.searchable-scrollback: CM-s
59
23 Isn't rxvt supposed to be small? Don't all those features bloat? 60 Isn't rxvt supposed to be small? Don't all those features bloat?
24 I often get asked about this, and I think, no, they didn't cause 61 I often get asked about this, and I think, no, they didn't cause
25 extra bloat. If you compare a minimal rxvt and a minimal urxvt, you 62 extra bloat. If you compare a minimal rxvt and a minimal urxvt, you
26 can see that the urxvt binary is larger (due to some encoding tables 63 can see that the urxvt binary is larger (due to some encoding tables
27 always being compiled in), but it actually uses less memory (RSS) 64 always being compiled in), but it actually uses less memory (RSS)
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148 185
149 I need to make it setuid/setgid to support utmp/ptys on my OS, is this 186 I need to make it setuid/setgid to support utmp/ptys on my OS, is this
150 safe? 187 safe?
151 Likely not. While I honestly try to make it secure, and am probably 188 Likely not. While I honestly try to make it secure, and am probably
152 not bad at it, I think it is simply unreasonable to expect all of 189 not bad at it, I think it is simply unreasonable to expect all of
153 freetype + fontconfig + xft + xlib + ... + rxvt-unicode itself to 190 freetype + fontconfig + xft + xlib + perl + ... + rxvt-unicode
154 all be secure. Also, rxvt-unicode disables some options when it 191 itself to all be secure. Also, rxvt-unicode disables some options
155 detects that it runs setuid or setgid, which is not nice. 192 when it detects that it runs setuid or setgid, which is not nice.
193 Besides, with the embedded perl interpreter the possibility for
194 security problems easily multiplies.
156 195
157 Elevated privileges are only required for utmp and pty operations on 196 Elevated privileges are only required for utmp and pty operations on
158 some systems (for example, GNU/Linux doesn't need any extra 197 some systems (for example, GNU/Linux doesn't need any extra
159 privileges for ptys, but some need it for utmp support). If 198 privileges for ptys, but some need it for utmp support). It is
160 rxvt-unicode doesn't support the library/setuid helper that your OS 199 planned to mvoe this into a forked handler process, but this is not
161 needs I'll be happy to assist you in implementing support for it. 200 yet done.
162 201
163 So, while setuid/setgid operation is supported and not a problem on 202 So, while setuid/setgid operation is supported and not a problem on
164 your typical single-user-no-other-logins unix desktop, always 203 your typical single-user-no-other-logins unix desktop, always
165 remember that its an awful lot of code, most of which isn't checked 204 remember that its an awful lot of code, most of which isn't checked
166 for security issues regularly. 205 for security issues regularly.
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1961 it. 2000 it.
1962 2001
1963 --disable-resources 2002 --disable-resources
1964 Removes any support for resource checking. 2003 Removes any support for resource checking.
1965 2004
1966 --enable-xgetdefault
1967 Make resources checking via XGetDefault() instead of our small
1968 version which only checks ~/.Xdefaults, or if that doesn't exist
1969 then ~/.Xresources.
1970
1971 Please note that nowadays, things like XIM will automatically pull
1972 in and use the full X resource manager, so the overhead of using it
1973 might be very small, if nonexistant.
1974
1975 --enable-strings (default: off) 2005 --enable-strings (default: off)
1976 Add support for our possibly faster memset() function and other 2006 Add support for our possibly faster memset() function and other
1977 various routines, overriding your system's versions which may have 2007 various routines, overriding your system's versions which may have
1978 been hand-crafted in assembly or may require extra libraries to link 2008 been hand-crafted in assembly or may require extra libraries to link
1979 in. (this breaks ANSI-C rules and has problems on many GNU/Linux 2009 in. (this breaks ANSI-C rules and has problems on many GNU/Linux

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