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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 | |
| 22 | FREQUENTLY ASKED QUESTIONS |
22 | FREQUENTLY ASKED QUESTIONS |
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23 | Isn't rxvt supposed to be small? Don't all those features bloat? |
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24 | I often get asked about this, and I think, no, they didn't cause |
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25 | extra bloat. If you compare a minimal rxvt and a minimal urxvt, you |
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26 | can see that the urxvt binary is larger (due to some encoding tables |
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27 | always being compiled in), but it actually uses less memory (RSS) |
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28 | after startup. Even with "--disable-everything", this comparison is |
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29 | a bit unfair, as many features unique to urxvt (locale, encoding |
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30 | conversion, iso14755 etc.) are already in use in this mode. |
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31 | |
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32 | text data bss drs rss filename |
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33 | 98398 1664 24 15695 1824 rxvt --disable-everything |
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34 | 188985 9048 66616 18222 1788 urxvt --disable-everything |
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35 | |
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36 | When you "--enable-everything" (which _is_ unfair, as this involves |
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37 | xft and full locale/XIM support which are quite bloaty inside libX11 |
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38 | and my libc), the two diverge, but not unreasnobaly so. |
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39 | |
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40 | text data bss drs rss filename |
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41 | 163431 2152 24 20123 2060 rxvt --enable-everything |
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42 | 1035683 49680 66648 29096 3680 urxvt --enable-everything |
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43 | |
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44 | The very large size of the text section is explained by the |
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45 | east-asian encoding tables, which, if unused, take up disk space but |
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46 | nothing else and can be compiled out unless you rely on X11 core |
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47 | fonts that use those encodings. The BSS size comes from the 64k |
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48 | emergency buffer that my c++ compiler allocates (but of course |
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49 | doesn't use unless you are out of memory). Also, using an xft font |
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50 | instead of a core font immediately adds a few megabytes of RSS. Xft |
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51 | indeed is responsible for a lot of RSS even when not used. |
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52 | |
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53 | Of course, due to every character using two or four bytes instead of |
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54 | one, a large scrollback buffer will ultimately make rxvt-unicode use |
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55 | more memory. |
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56 | |
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57 | Compared to e.g. Eterm (5112k), aterm (3132k) and xterm (4680k), |
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58 | this still fares rather well. And compared to some monsters like |
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59 | gnome-terminal (21152k + extra 4204k in separate processes) or |
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60 | konsole (22200k + extra 43180k in daemons that stay around after |
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61 | exit, plus half aminute of startup time, including the hundreds of |
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62 | warnings it spits out), it fares extremely well *g*. |
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63 | |
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64 | Why C++, isn't that unportable/bloated/uncool? |
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65 | Is this a question? :) It comes up very often. The simple answer is: |
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66 | I had to write it, and C++ allowed me to write and maintain it in a |
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67 | fraction of the time and effort (which is a scarce resource for me). |
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68 | Put even shorter: It simply wouldn't exist without C++. |
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69 | |
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70 | My personal stance on this is that C++ is less portable than C, but |
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71 | in the case of rxvt-unicode this hardly matters, as its portability |
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72 | limits are defined by things like X11, pseudo terminals, locale |
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73 | support and unix domain sockets, which are all less portable than |
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74 | C++ itself. |
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75 | |
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76 | Regarding the bloat, see the above question: It's easy to write |
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77 | programs in C that use gobs of memory, an certainly possible to |
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78 | write programs in C++ that don't. C++ also often comes with large |
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79 | libraries, but this is not necessarily the case with GCC. Here is |
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80 | what rxvt links against on my system with a minimal config: |
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81 | |
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82 | libX11.so.6 => /usr/X11R6/lib/libX11.so.6 (0x00002aaaaabc3000) |
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83 | libc.so.6 => /lib/libc.so.6 (0x00002aaaaadde000) |
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84 | libdl.so.2 => /lib/libdl.so.2 (0x00002aaaab01d000) |
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85 | /lib64/ld-linux-x86-64.so.2 (0x00002aaaaaaab000) |
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86 | |
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87 | And here is rxvt-unicode: |
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88 | |
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89 | libX11.so.6 => /usr/X11R6/lib/libX11.so.6 (0x00002aaaaabc3000) |
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90 | libgcc_s.so.1 => /lib/libgcc_s.so.1 (0x00002aaaaada2000) |
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91 | libc.so.6 => /lib/libc.so.6 (0x00002aaaaaeb0000) |
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92 | libdl.so.2 => /lib/libdl.so.2 (0x00002aaaab0ee000) |
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93 | /lib64/ld-linux-x86-64.so.2 (0x00002aaaaaaab000) |
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94 | |
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95 | No large bloated libraries (of course, none were linked in |
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96 | statically), except maybe libX11 :) |
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97 | |
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98 | Does it support tabs, can I have a tabbed rxvt-unicode? |
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99 | rxvt-unicode does not directly support tabs. It will work fine with |
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100 | tabbing functionality of many window managers or similar tabbing |
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101 | programs, and its embedding-features allow it to be embedded into |
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102 | other programs, as witnessed by doc/rxvt-tabbed or the upcoming |
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103 | "Gtk2::URxvt" perl module, which features a tabbed urxvt (murxvt) |
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104 | terminal as an example embedding application. |
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105 | |
| 23 | How do I know which rxvt-unicode version I'm using? |
106 | How do I know which rxvt-unicode version I'm using? |
| 24 | The version number is displayed with the usage (-h). Also the escape |
107 | The version number is displayed with the usage (-h). Also the escape |
| 25 | sequence "ESC [ 8 n" sets the window title to the version number. |
108 | sequence "ESC [ 8 n" sets the window title to the version number. |
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109 | When using the rxvtc client, the version displayed is that of the |
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110 | daemon. |
| 26 | |
111 | |
| 27 | I am using Debian GNU/Linux and have a problem... |
112 | I am using Debian GNU/Linux and have a problem... |
| 28 | The Debian GNU/Linux package of rxvt-unicode in sarge contains large |
113 | The Debian GNU/Linux package of rxvt-unicode in sarge contains large |
| 29 | patches that considerably change the behaviour of rxvt-unicode. |
114 | patches that considerably change the behaviour of rxvt-unicode. |
| 30 | Before reporting a bug to the original rxvt-unicode author please |
115 | Before reporting a bug to the original rxvt-unicode author please |
| … | |
… | |
| 1145 | l Scroll to bottom on TTY output |
1230 | l Scroll to bottom on TTY output |
| 1146 | |
1231 | |
| 1147 | "Ps = 1011" (rxvt) |
1232 | "Ps = 1011" (rxvt) |
| 1148 | h Scroll to bottom when a key is pressed |
1233 | h Scroll to bottom when a key is pressed |
| 1149 | l Don't scroll to bottom when a key is pressed |
1234 | l Don't scroll to bottom when a key is pressed |
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1235 | |
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1236 | "Ps = 1021" (rxvt) |
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1237 | h Bold/italic implies high intensity (see option -is) |
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1238 | l Font styles have no effect on intensity (Compile styles) |
| 1150 | |
1239 | |
| 1151 | "Ps = 1047" |
1240 | "Ps = 1047" |
| 1152 | h Use Alternate Screen Buffer |
1241 | h Use Alternate Screen Buffer |
| 1153 | l Use Normal Screen Buffer - clear Alternate Screen Buffer if returning from it |
1242 | l Use Normal Screen Buffer - clear Alternate Screen Buffer if returning from it |
| 1154 | |
1243 | |
| … | |
… | |
| 1866 | window op and some xterm/OSC escape sequences |
1955 | window op and some xterm/OSC escape sequences |
| 1867 | tripleclickwords |
1956 | tripleclickwords |
| 1868 | settable insecure mode |
1957 | settable insecure mode |
| 1869 | keysym remapping support |
1958 | keysym remapping support |
| 1870 | cursor blinking and underline cursor |
1959 | cursor blinking and underline cursor |
| 1871 | -embed and -pty-fd options |
1960 | -embed, -pty-fd and -hold options |
| 1872 | |
1961 | |
| 1873 | --enable-iso14755 (default: on) |
1962 | --enable-iso14755 (default: on) |
| 1874 | Enable extended ISO 14755 support (see rxvt(1), or doc/rxvt.1.txt). |
1963 | Enable extended ISO 14755 support (see rxvt(1), or doc/rxvt.1.txt). |
| 1875 | Basic support (section 5.1) is enabled by "--enable-frills", while |
1964 | Basic support (section 5.1) is enabled by "--enable-frills", while |
| 1876 | support for 5.2, 5.3 and 5.4 is enabled with this switch. |
1965 | support for 5.2, 5.3 and 5.4 is enabled with this switch. |
| … | |
… | |
| 1902 | --enable-dlmalloc (default: off) |
1991 | --enable-dlmalloc (default: off) |
| 1903 | Use Doug Lea's malloc - which is good for a production version See |
1992 | Use Doug Lea's malloc - which is good for a production version See |
| 1904 | <http://g.oswego.edu/dl/html/malloc.html> for details. |
1993 | <http://g.oswego.edu/dl/html/malloc.html> for details. |
| 1905 | |
1994 | |
| 1906 | --enable-smart-resize (default: on) |
1995 | --enable-smart-resize (default: on) |
| 1907 | Add smart growth/shrink behaviour when changing font size via from |
1996 | Add smart growth/shrink behaviour when changing font size via hot |
| 1908 | hot keys. This should keep in a fixed position the rxvt corner which |
1997 | keys. This should keep the window corner which is closest to a |
| 1909 | is closest to a corner of the screen. |
1998 | corner of the screen in a fixed position. |
| 1910 | |
1999 | |
| 1911 | --enable-pointer-blank (default: on) |
2000 | --enable-pointer-blank (default: on) |
| 1912 | Add support to have the pointer disappear when typing or inactive. |
2001 | Add support to have the pointer disappear when typing or inactive. |
| 1913 | |
2002 | |
| 1914 | --with-name=NAME (default: urxvt) |
2003 | --with-name=NAME (default: urxvt) |
