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Revision 1.145 by root, Fri Nov 16 11:14:12 2007 UTC vs.
Revision 1.169 by root, Wed Nov 5 00:14:18 2008 UTC

12emulator intended as an I<xterm>(1) replacement for users who do not 12emulator intended as an I<xterm>(1) replacement for users who do not
13require features such as Tektronix 4014 emulation and toolkit-style 13require features such as Tektronix 4014 emulation and toolkit-style
14configurability. As a result, B<rxvt-unicode> uses much less swap space -- 14configurability. As a result, B<rxvt-unicode> uses much less swap space --
15a significant advantage on a machine serving many X sessions. 15a significant advantage on a machine serving many X sessions.
16 16
17This document is also available on the World-Wide-Web at
18L<http://pod.tst.eu/http://cvs.schmorp.de/rxvt-unicode/doc/rxvt.1.pod>.
19
17=head1 FREQUENTLY ASKED QUESTIONS 20=head1 FREQUENTLY ASKED QUESTIONS
18 21
19See @@RXVT_NAME@@(7) (try C<man 7 @@RXVT_NAME@@>) for a list of 22See @@RXVT_NAME@@(7) (try C<man 7 @@RXVT_NAME@@>) for a list of
20frequently asked questions and answer to them and some common 23frequently asked questions and answer to them and some common
21problems. That document is also accessible on the World-Wide-Web at 24problems. That document is also accessible on the World-Wide-Web at
22L<http://cvs.schmorp.de/browse/rxvt-unicode/doc/rxvt.7.html>. 25L<http://pod.tst.eu/http://cvs.schmorp.de/rxvt-unicode/doc/rxvt.7.pod>.
23 26
24=head1 RXVT-UNICODE VS. RXVT 27=head1 RXVT-UNICODE VS. RXVT
25 28
26Unlike the original rxvt, B<rxvt-unicode> stores all text in Unicode 29Unlike the original rxvt, B<rxvt-unicode> stores all text in Unicode
27internally. That means it can store and display most scripts in the 30internally. That means it can store and display most scripts in the
30like mongolian or scripts requiring extremely complex combining rules, 33like mongolian or scripts requiring extremely complex combining rules,
31like tibetan or devanagari. Don't expect pretty output when using these 34like tibetan or devanagari. Don't expect pretty output when using these
32scripts. Most other scripts, latin, cyrillic, kanji, thai etc. should work 35scripts. Most other scripts, latin, cyrillic, kanji, thai etc. should work
33fine, though. A somewhat difficult case are right-to-left scripts, such 36fine, though. A somewhat difficult case are right-to-left scripts, such
34as hebrew: B<rxvt-unicode> adopts the view that bidirectional algorithms 37as hebrew: B<rxvt-unicode> adopts the view that bidirectional algorithms
35belong into the application, not the terminal emulator (too many things -- 38belong in the application, not the terminal emulator (too many things --
36such as cursor-movement while editing -- break otherwise), but that might 39such as cursor-movement while editing -- break otherwise), but that might
37change. 40change.
38 41
39If you are looking for a terminal that supports more exotic scripts, let 42If you are looking for a terminal that supports more exotic scripts, let
40me recommend C<mlterm>, which is a very user friendly, lean and clean 43me recommend C<mlterm>, which is a very user friendly, lean and clean
89 92
90Print out a message describing available options. 93Print out a message describing available options.
91 94
92=item B<-display> I<displayname> 95=item B<-display> I<displayname>
93 96
94Attempt to open a window on the named X display (B<-d> still 97Attempt to open a window on the named X display (the older form B<-d>
95respected). In the absence of this option, the display specified by the 98is still respected. but deprecated). In the absence of this option, the
96B<DISPLAY> environment variable is used. 99display specified by the B<DISPLAY> environment variable is used.
97 100
98=item B<-depth> I<bitdepth> 101=item B<-depth> I<bitdepth>
99 102
100Compile I<xft>: Attempt to find a visual with the given bit depth; 103Compile I<xft>: Attempt to find a visual with the given bit depth;
101resource B<depth>. 104resource B<depth>.
102 105
106[Please note that many X servers (and libXft) are buggy with
107respect to C<-depth 32> and/or alpha channels, and will cause all sorts
108of graphical corruption. This is harmless, but we can't do anything about
109this, so watch out]
110
103=item B<-geometry> I<geom> 111=item B<-geometry> I<geom>
104 112
105Window geometry (B<-g> still respected); resource B<geometry>. 113Window geometry (B<-g> still respected); resource B<geometry>.
106 114
107=item B<-rv>|B<+rv> 115=item B<-rv>|B<+rv>
116 124
117Turn on/off skip scrolling (allow multiple screens per refresh); resource B<skipScroll>. 125Turn on/off skip scrolling (allow multiple screens per refresh); resource B<skipScroll>.
118 126
119=item B<-tr>|B<+tr> 127=item B<-tr>|B<+tr>
120 128
121Turn on/off illusion of a transparent window background. Obsolete form of it is 129Turn on/off illusion of a transparent window background; resource B<transparent>.
122B<-ip> and it should not be used anymore; resource B<transparent>.
123 130
124I<Please note that old resource name of B<inheritPixmap> is obsolete and should be 131B<-ip> is still accepted as an obsolete alias but will be removed in
125changed to B<transparent>. Backwards compatibility support for B<inheritPixmap> will 132future versions.
126be phased out in future versions of rxvt!>
127 133
128I<Please address all transparency related issues to Sasha Vasko at 134I<Please address all transparency related issues to Sasha Vasko at
129sasha@aftercode.net. Read the FAQ (man 7 @@RXVT_NAME@@)!> 135sasha@aftercode.net. Read the FAQ (man 7 @@RXVT_NAME@@)!>
130 136
131=item B<-fade> I<number> 137=item B<-fade> I<number>
176horizontal radii are considered to be the same. Setting one of the 182horizontal radii are considered to be the same. Setting one of the
177radii to 1 and another to a large number creates interesting effects 183radii to 1 and another to a large number creates interesting effects
178on some backgrounds. Maximum radius value is 128. Compile I<afterimage>; 184on some backgrounds. Maximum radius value is 128. Compile I<afterimage>;
179resource I<blurRadius>. 185resource I<blurRadius>.
180 186
187=item B<-icon> I<file>
188
189Compile I<afterimage>: Use the specified image as application icon. This
190is used by many window managers, taskbars and pagers to represent the
191application window; resource I<iconFile>.
192
181=item B<-bg> I<colour> 193=item B<-bg> I<colour>
182 194
183Window background colour; resource B<background>. 195Window background colour; resource B<background>.
184 196
185=item B<-fg> I<colour> 197=item B<-fg> I<colour>
244italic> >> characters are to be printed. See resource B<boldItalicFont> 256italic> >> characters are to be printed. See resource B<boldItalicFont>
245for details. 257for details.
246 258
247=item B<-is>|B<+is> 259=item B<-is>|B<+is>
248 260
249Compile I<font-styles>: Bold/Italic font styles imply high intensity 261Compile I<font-styles>: Bold/Blink font styles imply high intensity
250foreground/background (default). See resource B<intensityStyles> for 262foreground/background (default). See resource B<intensityStyles> for
251details. 263details.
252 264
253=item B<-name> I<name> 265=item B<-name> I<name>
254 266
272 284
273=item B<-sb>|B<+sb> 285=item B<-sb>|B<+sb>
274 286
275Turn on/off scrollbar; resource B<scrollBar>. 287Turn on/off scrollbar; resource B<scrollBar>.
276 288
289=item B<-sr>|B<+sr>
290
291Put scrollbar on right/left; resource B<scrollBar_right>.
292
293=item B<-st>|B<+st>
294
295Display rxvt (non XTerm/NeXT) scrollbar without/with a trough;
296resource B<scrollBar_floating>.
297
277=item B<-si>|B<+si> 298=item B<-si>|B<+si>
278 299
279Turn on/off scroll-to-bottom on TTY output inhibit; resource 300Turn on/off scroll-to-bottom on TTY output inhibit; resource
280B<scrollTtyOutput> has opposite effect. 301B<scrollTtyOutput> has opposite effect.
281 302
287=item B<-sw>|B<+sw> 308=item B<-sw>|B<+sw>
288 309
289Turn on/off scrolling with the scrollback buffer as new lines appear. 310Turn on/off scrolling with the scrollback buffer as new lines appear.
290This only takes effect if B<-si> is also given; resource 311This only takes effect if B<-si> is also given; resource
291B<scrollWithBuffer>. 312B<scrollWithBuffer>.
292
293=item B<-sr>|B<+sr>
294
295Put scrollbar on right/left; resource B<scrollBar_right>.
296
297=item B<-st>|B<+st>
298
299Display rxvt (non XTerm/NeXT) scrollbar without/with a trough;
300resource B<scrollBar_floating>.
301 313
302=item B<-ptab>|B<+ptab> 314=item B<-ptab>|B<+ptab>
303 315
304If enabled (default), "Horizontal Tab" characters are being stored as 316If enabled (default), "Horizontal Tab" characters are being stored as
305actual wide characters in the screen buffer, which makes it possible to 317actual wide characters in the screen buffer, which makes it possible to
334 346
335=item B<-bl> 347=item B<-bl>
336 348
337Compile I<frills>: Set MWM hints to request a borderless window, i.e. 349Compile I<frills>: Set MWM hints to request a borderless window, i.e.
338if honoured by the WM, the rxvt-unicode window will not have window 350if honoured by the WM, the rxvt-unicode window will not have window
339decorations; resource B<borderLess>. 351decorations; resource B<borderLess>. If the window manager does not
352support MWM hints (e.g. kwin), enables override-redirect mode.
340 353
341=item B<-override-redirect> 354=item B<-override-redirect>
342 355
343Compile I<frills>: Sets override-redirect on the window; resource 356Compile I<frills>: Sets override-redirect on the window; resource
344B<override-redirect>. 357B<override-redirect>.
417 430
418=item B<-tcw> 431=item B<-tcw>
419 432
420Change the meaning of triple-click selection with the left mouse 433Change the meaning of triple-click selection with the left mouse
421button. Only effective when the original (non-perl) selection code is 434button. Only effective when the original (non-perl) selection code is
422in-use. Instead of selecting a full line it will extend the selection the 435in-use. Instead of selecting a full line it will extend the selection to
423end of the logical line only. resource B<tripleclickwords>. 436the end of the logical line only. resource B<tripleclickwords>.
424 437
425=item B<-insecure> 438=item B<-insecure>
426 439
427Enable "insecure" mode, which currently enables most of the escape 440Enable "insecure" mode, which currently enables most of the escape
428sequences that echo strings. See the resource B<insecure> for more 441sequences that echo strings. See the resource B<insecure> for more
448 461
449Turn on/off hold window after exit support. If enabled, @@RXVT_NAME@@ 462Turn on/off hold window after exit support. If enabled, @@RXVT_NAME@@
450will not immediately destroy its window when the program executed within 463will not immediately destroy its window when the program executed within
451it exits. Instead, it will wait till it is being killed or closed by the 464it exits. Instead, it will wait till it is being killed or closed by the
452user; resource B<hold>. 465user; resource B<hold>.
466
467=item B<-cd> I<path>
468
469Sets the working directory for the shell (or the command specified via
470B<-e>). The I<path> must be an absolute path and it must exist for
471@@RXVT_NAME@@ to start; resource B<chdir>.
472
473=item B<-xrm> I<string>
474
475Works like the X Toolkit option of the same name, by adding the I<string>
476as if it were specified in a resource file. Resource values specified this
477way take precedence over all other resource specifications.
478
479Note that you need to use the I<same> syntax as in the .Xdefaults file,
480e.g. C<*.background: black>. Also note that all @@RXVT_NAME@@-specific
481options can be specified as long-options on the commandline, so use
482of B<-xrm> is mostly limited to cases where you want to specify other
483resources (e.g. for input methods) or for compatibility with other
484programs.
453 485
454=item B<-keysym.>I<sym> I<string> 486=item B<-keysym.>I<sym> I<string>
455 487
456Remap a key symbol. See resource B<keysym>. 488Remap a key symbol. See resource B<keysym>.
457 489
492If this switch is given, @@RXVT_NAME@@ will not create any utmp/wtmp 524If this switch is given, @@RXVT_NAME@@ will not create any utmp/wtmp
493entries and will not tinker with pty/tty permissions - you have to do that 525entries and will not tinker with pty/tty permissions - you have to do that
494yourself if you want that. 526yourself if you want that.
495 527
496As an extremely special case, specifying C<-1> will completely suppress 528As an extremely special case, specifying C<-1> will completely suppress
497pty/tty operations. 529pty/tty operations, which is probably only useful in conjunction with some
530perl extension that manages the terminal.
498 531
499Here is a example in perl that illustrates how this option can be used (a 532Here is a example in perl that illustrates how this option can be used (a
500longer example is in F<doc/pty-fd>): 533longer example is in F<doc/pty-fd>):
501 534
502 use IO::Pty; 535 use IO::Pty;
516Comma-separated list of perl extension scripts to use (or not to use) in 549Comma-separated list of perl extension scripts to use (or not to use) in
517this terminal instance. See resource B<perl-ext> for details. 550this terminal instance. See resource B<perl-ext> for details.
518 551
519=back 552=back
520 553
521=head1 RESOURCES (available also as long-options) 554=head1 RESOURCES
522 555
523Note: `@@RXVT_NAME@@ --help' gives a list of all resources (long 556Note: `@@RXVT_NAME@@ --help' gives a list of all resources (long
524options) compiled into your version. 557options) compiled into your version. All resources are also available as
558long-options.
525 559
526You can set and change the resources using X11 tools like B<xrdb>. Many 560You can set and change the resources using X11 tools like B<xrdb>. Many
527distribution do also load settings from the B<~/.Xresources> file when X 561distribution do also load settings from the B<~/.Xresources> file when X
528starts. @@RXVT_NAME@@ will consult the following files/resources in order, 562starts. @@RXVT_NAME@@ will consult the following files/resources in order,
529with later settings overwriting earlier ones: 563with later settings overwriting earlier ones:
531 1. system-wide app-defaults file, either locale-dependent OR global 565 1. system-wide app-defaults file, either locale-dependent OR global
532 2. app-defaults file in $XAPPLRESDIR 566 2. app-defaults file in $XAPPLRESDIR
533 3. RESOURCE_MANAGER property on root-window OR $HOME/.Xdefaults 567 3. RESOURCE_MANAGER property on root-window OR $HOME/.Xdefaults
534 4. SCREEN_RESOURCES for the current screen 568 4. SCREEN_RESOURCES for the current screen
535 5. $XENVIRONMENT file OR $HOME/.Xdefaults-<nodename> 569 5. $XENVIRONMENT file OR $HOME/.Xdefaults-<nodename>
570 6. resources specified via -xrm on the commandline
536 571
537Note that when reading X resources, B<@@RXVT_NAME@@> recognizes two class 572Note that when reading X resources, B<@@RXVT_NAME@@> recognizes two class
538names: B<Rxvt> and B<URxvt>. The class name B<Rxvt> allows resources 573names: B<Rxvt> and B<URxvt>. The class name B<Rxvt> allows resources
539common to both B<@@RXVT_NAME@@> and the original I<rxvt> to be easily 574common to both B<@@RXVT_NAME@@> and the original I<rxvt> to be easily
540configured, while the class name B<URxvt> allows resources unique to 575configured, while the class name B<URxvt> allows resources unique to
550=item B<depth:> I<bitdepth> 585=item B<depth:> I<bitdepth>
551 586
552Compile I<xft>: Attempt to find a visual with the given bit depth; 587Compile I<xft>: Attempt to find a visual with the given bit depth;
553option B<-depth>. 588option B<-depth>.
554 589
590=item B<buffered:> I<boolean>
591
592Compile I<xft>: Turn on/off double-buffering for xft (default enabled).
593On some card/driver combination enabling it slightly decreases
594performance, on most it greatly helps it. The slowdown is small, so it
595should normally be enabled.
596
555=item B<geometry:> I<geom> 597=item B<geometry:> I<geom>
556 598
557Create the window with the specified X window geometry [default 80x24]; 599Create the window with the specified X window geometry [default 80x24];
558option B<-geometry>. 600option B<-geometry>.
559 601
642 684
643B<False>: specify that everything is to be displayed, even 685B<False>: specify that everything is to be displayed, even
644if the refresh is too fast for the human eye to read anything (or the 686if the refresh is too fast for the human eye to read anything (or the
645monitor to display anything); option B<+ss>. 687monitor to display anything); option B<+ss>.
646 688
647=item B<inheritPixmap:> I<boolean> 689=item B<transparent:> I<boolean>
648 690
649B<True>: make the background inherit the parent windows' pixmap, giving 691Turn on/off illusion of a transparent window background.
650artificial transparency. B<False>: do not inherit the parent windows'
651pixmap.
652 692
653I<Please note that transparency of any kind if completely unsupported by 693B<inheritPixmap> is still accepted as an obsolete alias but will be removed in
654the author. Don't bug him with installation questions!> 694future versions.
695
696I<Please address all transparency related issues to Sasha Vasko at
697sasha@aftercode.net. Read the FAQ (man 7 @@RXVT_NAME@@)!>
655 698
656=item B<fading:> I<number> 699=item B<fading:> I<number>
657 700
658Fade the text by the given percentage when focus is lost; option B<-fade>. 701Fade the text by the given percentage when focus is lost; option B<-fade>.
659 702
676 719
677Specify background blending type; option B<-blt>. 720Specify background blending type; option B<-blt>.
678 721
679=item B<blurRadius:> I<number> 722=item B<blurRadius:> I<number>
680 723
681Apply Gaussian Blurr with the specified radius to the transparent 724Apply gaussian blur with the specified radius to the transparent
682background image; option B<-blr>. 725background image; option B<-blr>.
726
727=item B<iconFile:> I<file>
728
729Set the application icon pixmap; option B<-icon>.
683 730
684=item B<scrollColor:> I<colour> 731=item B<scrollColor:> I<colour>
685 732
686Use the specified colour for the scrollbar [default #B2B2B2]. 733Use the specified colour for the scrollbar [default #B2B2B2].
687 734
706an integer number of images in that direction. No image will be magnified 753an integer number of images in that direction. No image will be magnified
707beyond 10 times its original size. The maximum permitted scale is 1000. 754beyond 10 times its original size. The maximum permitted scale is 1000.
708Additional operations can be specified after colon B<:op1:op2...>. 755Additional operations can be specified after colon B<:op1:op2...>.
709Supported operations are: 756Supported operations are:
710 757
711 tile force background image to be tiled and not scaled. Equivalent to 0x0, 758 tile force background image to be tiled and not scaled. Equivalent to 0x0
712 propscale will scale image keeping proportions, 759 propscale will scale image keeping proportions
713 auto will scale image to match window size. Equivalent to 100x100; 760 auto will scale image to match window size. Equivalent to 100x100
714 hscale will scale image horizontally to the window size; 761 hscale will scale image horizontally to the window size
715 vscale will scale image vertically to the window size; 762 vscale will scale image vertically to the window size
716 scale will scale image to match window size; 763 scale will scale image to match window size
717 root will tile image as if it was a root window background, auto-adjusting 764 root will tile image as if it was a root window background, auto-adjusting
718 whenever terminal window moves. 765 whenever terminal window moves
719 766
720If used in conjunction with B<-tr> option, the specified pixmap will be 767If used in conjunction with B<-tr> option, the specified pixmap will be
721blended over transparency image using either alpha-blending, or any 768blended over transparency image using either alpha-blending, or any
722other blending type, specified with B<-blt "type"> option. 769other blending type, specified with B<-blt "type"> option.
723 770
788text font will being used for the given style. 835text font will being used for the given style.
789 836
790=item B<intensityStyles:> I<boolean> 837=item B<intensityStyles:> I<boolean>
791 838
792When font styles are not enabled, or this option is enabled (B<True>, 839When font styles are not enabled, or this option is enabled (B<True>,
793option B<-is>, the default), bold and italic font styles imply high 840option B<-is>, the default), bold/blink font styles imply high
794intensity foreground/background colours. Disabling this option (B<False>, 841intensity foreground/background colours. Disabling this option (B<False>,
795option B<+is>) disables this behaviour, the high intensity colours are not 842option B<+is>) disables this behaviour, the high intensity colours are not
796reachable. 843reachable.
797 844
798=item B<selectstyle:> I<mode>
799
800Set mouse selection style to B<old> which is 2.20, B<oldword> which
801is xterm style with 2.20 old word selection, or anything else which
802gives xterm style selection. Only effective when the original (non-perl)
803selection code is in use.
804
805=item B<scrollstyle:> I<mode>
806
807Set scrollbar style to B<rxvt>, B<plain>, B<next> or B<xterm>. B<plain> is
808the author's favourite.
809
810=item B<title:> I<string> 845=item B<title:> I<string>
811 846
812Set window title string, the default title is the command-line 847Set window title string, the default title is the command-line
813specified after the B<-e> option, if any, otherwise the application 848specified after the B<-e> option, if any, otherwise the application
814name; option B<-title>. 849name; option B<-title>.
827=item B<urgentOnBell:> I<boolean> 862=item B<urgentOnBell:> I<boolean>
828 863
829B<True>: set the urgency hint for the wm on receipt of a bell character. 864B<True>: set the urgency hint for the wm on receipt of a bell character.
830B<False>: do not set the urgency hint [default]. 865B<False>: do not set the urgency hint [default].
831 866
867@@RXVT_NAME@@ resets the urgency hint on every focus change.
868
832=item B<visualBell:> I<boolean> 869=item B<visualBell:> I<boolean>
833 870
834B<True>: use visual bell on receipt of a bell character; option B<-vb>. 871B<True>: use visual bell on receipt of a bell character; option B<-vb>.
835B<False>: no visual bell [default]; option B<+vb>. 872B<False>: no visual bell [default]; option B<+vb>.
836 873
858 895
859 URxvt.print-pipe: cat > $(TMPDIR=$HOME mktemp urxvt.XXXXXX) 896 URxvt.print-pipe: cat > $(TMPDIR=$HOME mktemp urxvt.XXXXXX)
860 897
861This creates a new file in your home directory with the screen contents 898This creates a new file in your home directory with the screen contents
862every time you hit C<Print>. 899every time you hit C<Print>.
900
901=item B<scrollstyle:> I<mode>
902
903Set scrollbar style to B<rxvt>, B<plain>, B<next> or B<xterm>. B<plain> is
904the author's favourite.
863 905
864=item B<scrollBar:> I<boolean> 906=item B<scrollBar:> I<boolean>
865 907
866B<True>: enable the scrollbar [default]; option B<-sb>. B<False>: 908B<True>: enable the scrollbar [default]; option B<-sb>. B<False>:
867disable the scrollbar; option B<+sb>. 909disable the scrollbar; option B<+sb>.
1000will be created). In this mode, characters outside ISO-8859-1 can be used. 1042will be created). In this mode, characters outside ISO-8859-1 can be used.
1001 1043
1002When the selection extension is not used, only ISO-8859-1 characters can 1044When the selection extension is not used, only ISO-8859-1 characters can
1003be used. If not specified, the built-in default is used: 1045be used. If not specified, the built-in default is used:
1004 1046
1005B<< BACKSLASH `"'&()*,;<=>?@[]{|} >> 1047B<< BACKSLASH `"'&()*,;<=>?@[]^{|} >>
1006 1048
1007=item B<preeditType:> I<style> 1049=item B<preeditType:> I<style>
1008 1050
1009B<OverTheSpot>, B<OffTheSpot>, B<Root>; option B<-pt>. 1051B<OverTheSpot>, B<OffTheSpot>, B<Root>; option B<-pt>.
1010 1052
1066 1108
1067=item B<secondaryScroll:> I<boolean> 1109=item B<secondaryScroll:> I<boolean>
1068 1110
1069Turn on/off secondary screen scroll (default enabled). If this 1111Turn on/off secondary screen scroll (default enabled). If this
1070option is enabled, scrolls on the secondary screen will change the 1112option is enabled, scrolls on the secondary screen will change the
1071scrollback buffer and switching to/from the secondary screen will 1113scrollback buffer and, when secondaryScreen is off, switching
1072instead scroll the screen up. 1114to/from the secondary screen will instead scroll the screen up.
1073 1115
1074=item B<hold>: I<boolean> 1116=item B<hold>: I<boolean>
1075 1117
1076Turn on/off hold window after exit support. If enabled, @@RXVT_NAME@@ 1118Turn on/off hold window after exit support. If enabled, @@RXVT_NAME@@
1077will not immediately destroy its window when the program executed within 1119will not immediately destroy its window when the program executed within
1078it exits. Instead, it will wait till it is being killed or closed by the 1120it exits. Instead, it will wait till it is being killed or closed by the
1079user. 1121user.
1122
1123=item B<chdir>: I<path>
1124
1125Sets the working directory for the shell (or the command specified via
1126B<-e>). The I<path> must be an absolute path and it must exist for
1127@@RXVT_NAME@@ to start. If it isn't specified then the current working
1128directory will be used; option B<-cd>.
1080 1129
1081=item B<keysym.>I<sym>: I<string> 1130=item B<keysym.>I<sym>: I<string>
1082 1131
1083Compile I<frills>: Associate I<string> with keysym I<sym>. The 1132Compile I<frills>: Associate I<string> with keysym I<sym>. The
1084intervening resource name B<keysym.> cannot be omitted. 1133intervening resource name B<keysym.> cannot be omitted.
1191all instances, while B<perl-ext> is used for specific instances. 1240all instances, while B<perl-ext> is used for specific instances.
1192 1241
1193=item B<perl-eval>: I<string> 1242=item B<perl-eval>: I<string>
1194 1243
1195Perl code to be evaluated when all extensions have been registered. See 1244Perl code to be evaluated when all extensions have been registered. See
1196the @@RXVT_NAME@@perl(3) manpage. Due to security reasons, this resource 1245the @@RXVT_NAME@@perl(3) manpage.
1197will be ignored when running setuid/setgid.
1198 1246
1199=item B<perl-lib>: I<path> 1247=item B<perl-lib>: I<path>
1200 1248
1201Colon-separated list of additional directories that hold extension 1249Colon-separated list of additional directories that hold extension
1202scripts. When looking for extensions specified by the C<perl> resource, 1250scripts. When looking for extensions specified by the C<perl> resource,
1203@@RXVT_NAME@@ will first look in these directories and then in 1251@@RXVT_NAME@@ will first look in these directories and then in
1204F<@@RXVT_LIBDIR@@/urxvt/perl/>. Due to security reasons, this resource 1252F<@@RXVT_LIBDIR@@/urxvt/perl/>.
1205will be ignored when running setuid/setgid.
1206 1253
1207See the @@RXVT_NAME@@perl(3) manpage. 1254See the @@RXVT_NAME@@perl(3) manpage.
1208 1255
1209=item B<< selection.pattern-I<idx> >>: I<perl-regex> 1256=item B<< selection.pattern-I<idx> >>: I<perl-regex>
1210 1257
1445=back 1492=back
1446 1493
1447=head2 ALPHA CHANNEL SUPPORT 1494=head2 ALPHA CHANNEL SUPPORT
1448 1495
1449If Xft support has been compiled in and as long as Xft/Xrender/X don't get 1496If Xft support has been compiled in and as long as Xft/Xrender/X don't get
1450their act together, rxvt-unicode will support C<rgba:rrrr/gggg/bbbb/aaaa> 1497their act together, rxvt-unicode will do it's own alpha channel management:
1451(recommended, but B<MUST> have 4 digits/component) colour specifications, 1498
1452in addition to the ones provided by X, where the additional A component 1499You can prefix any color with an opaquenes percentage enclosed in
1500brackets, i.e. C<[percent]>, where C<percent> is a decimal percentage
1501(0-100) that specifies the opacity of the color, where C<0> is completely
1502transparent and C<100> is completely opaque. For example, C<[50]red> is a
1503half-transparent red, while C<[95]#00ff00> is an almost opaque green. This
1504is the recommended format to specify transparency values, and works with
1505all ways to specify a colour.
1506
1507For complete control, rxvt-unicode also supports
1508C<rgba:rrrr/gggg/bbbb/aaaa> (exactly four hex digits/component) colour
1509specifications, where the additional C<aaaa> component specifies opacity
1453specifies opacity (alpha) values. The minimum value of C<0> is completely 1510(alpha) values. The minimum value of C<0000> is completely transparent,
1454transparent). You can also prefix any color with C<[percent]>, where 1511while C<ffff> is completely opaque). The two example colours from
1455C<percent> is a decimal percentage (0-100) that specifies the opacity of 1512earlier could also be specified as C<rgba:ff00/0000/0000/8000> and
1456the color, where C<0> is completely transparent and C<100> is completelxy 1513C<rgba:0000/ff00/0000/f332>.
1457opaque.
1458 1514
1459You probably need to specify B<"-depth 32">, too, and have the luck that 1515You probably need to specify B<"-depth 32">, too, to force a visual with
1460your X-server uses ARGB pixel layout, as X is far from just supporting 1516alpha channels, and have the luck that your X-server uses ARGB pixel
1461ARGB visuals out of the box, and rxvt-unicode just fudges around. 1517layout, as X is far from just supporting ARGB visuals out of the box, and
1518rxvt-unicode just fudges around.
1462 1519
1463For example, the following selects an almost completely transparent red 1520For example, the following selects an almost completely transparent black
1464background, and an almost opaque pink foreground: 1521background, and an almost opaque pink foreground:
1465 1522
1466 @@RXVT_NAME@@ -depth 32 -bg rgba:0000/0000/0000/aaaa -fg "[80]pink" 1523 @@RXVT_NAME@@ -depth 32 -bg rgba:0000/0000/0000/4444 -fg "[80]pink"
1467 1524
1468I<Please note that transparency of any kind if completely unsupported by 1525When not using a background image, then the interpretation of the
1469the author. Don't bug him with installation questions!> 1526alpha channel is up to your compositing manager (most interpret it as
1527transparency of course).
1528
1529When using a background pixmap or pseudo-transparency, then the background
1530colour will always behave as if it were completely transparent (so the
1531background image shows instead), regardless of how it was specified, while
1532other colours will either be transparent as specified (the background
1533image will show through) on servers supporting the RENDER extension, or
1534fully opaque on servers not supporting the RENDER EXTENSION.
1535
1536Please note that due to bugs in Xft, specifying alpha values might result
1537in garbage being displayed when the X-server does not support the RENDER
1538extension.
1470 1539
1471=head1 ENVIRONMENT 1540=head1 ENVIRONMENT
1472 1541
1473B<@@RXVT_NAME@@> sets and/or uses the following environment variables: 1542B<@@RXVT_NAME@@> sets and/or uses the following environment variables:
1474 1543
1508C<--with-terminfo=PATH>. 1577C<--with-terminfo=PATH>.
1509 1578
1510=item B<DISPLAY> 1579=item B<DISPLAY>
1511 1580
1512Used by @@RXVT_NAME@@ to connect to the display and set to the correct 1581Used by @@RXVT_NAME@@ to connect to the display and set to the correct
1513display in its child processes. 1582display in its child processes if C<-display> isn't used to override. It
1583defaults to C<:0> if it doesn't exist.
1514 1584
1515=item B<SHELL> 1585=item B<SHELL>
1516 1586
1517The shell to be used for command execution, defaults to C</bin/sh>. 1587The shell to be used for command execution, defaults to C</bin/sh>.
1518 1588

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