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Revision 1.147 by root, Fri Nov 23 11:18:04 2007 UTC vs.
Revision 1.171 by root, Sat May 30 08:53:48 2009 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
309 321
310=item B<-bc>|B<+bc> 322=item B<-bc>|B<+bc>
311 323
312Blink the cursor; resource B<cursorBlink>. 324Blink the cursor; resource B<cursorBlink>.
313 325
326=item B<-uc>|B<+uc>
327
328Make the cursor underlined; resource B<cursorUnderline>.
329
314=item B<-iconic> 330=item B<-iconic>
315 331
316Start iconified, if the window manager supports that option. 332Start iconified, if the window manager supports that option.
317Alternative form is B<-ic>. 333Alternative form is B<-ic>.
318 334
334 350
335=item B<-bl> 351=item B<-bl>
336 352
337Compile I<frills>: Set MWM hints to request a borderless window, i.e. 353Compile 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 354if honoured by the WM, the rxvt-unicode window will not have window
339decorations; resource B<borderLess>. 355decorations; resource B<borderLess>. If the window manager does not
356support MWM hints (e.g. kwin), enables override-redirect mode.
340 357
341=item B<-override-redirect> 358=item B<-override-redirect>
342 359
343Compile I<frills>: Sets override-redirect on the window; resource 360Compile I<frills>: Sets override-redirect on the window; resource
344B<override-redirect>. 361B<override-redirect>.
353=item B<-lsp> I<number> 370=item B<-lsp> I<number>
354 371
355Compile I<frills>: Lines (pixel height) to insert between each row of 372Compile I<frills>: Lines (pixel height) to insert between each row of
356the display. Useful to work around font rendering problems; resource 373the display. Useful to work around font rendering problems; resource
357B<lineSpace>. 374B<lineSpace>.
375
376=item B<-letsp> I<number>
377
378Compile I<frills>: Amount to adjust the computed character width by
379to control overall letter spacing. Negative values will tighten up the
380letter spacing, positive values will space letters out more. Useful to
381work around odd font metrics; resource B<letterSpace>.
358 382
359=item B<-tn> I<termname> 383=item B<-tn> I<termname>
360 384
361This option specifies the name of the terminal type to be set in the 385This option specifies the name of the terminal type to be set in the
362B<TERM> environment variable. This terminal type must exist in the 386B<TERM> environment variable. This terminal type must exist in the
417 441
418=item B<-tcw> 442=item B<-tcw>
419 443
420Change the meaning of triple-click selection with the left mouse 444Change the meaning of triple-click selection with the left mouse
421button. Only effective when the original (non-perl) selection code is 445button. Only effective when the original (non-perl) selection code is
422in-use. Instead of selecting a full line it will extend the selection the 446in-use. Instead of selecting a full line it will extend the selection to
423end of the logical line only. resource B<tripleclickwords>. 447the end of the logical line only. resource B<tripleclickwords>.
424 448
425=item B<-insecure> 449=item B<-insecure>
426 450
427Enable "insecure" mode, which currently enables most of the escape 451Enable "insecure" mode, which currently enables most of the escape
428sequences that echo strings. See the resource B<insecure> for more 452sequences that echo strings. See the resource B<insecure> for more
448 472
449Turn on/off hold window after exit support. If enabled, @@RXVT_NAME@@ 473Turn on/off hold window after exit support. If enabled, @@RXVT_NAME@@
450will not immediately destroy its window when the program executed within 474will 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 475it exits. Instead, it will wait till it is being killed or closed by the
452user; resource B<hold>. 476user; resource B<hold>.
477
478=item B<-cd> I<path>
479
480Sets the working directory for the shell (or the command specified via
481B<-e>). The I<path> must be an absolute path and it must exist for
482@@RXVT_NAME@@ to start; resource B<chdir>.
453 483
454=item B<-xrm> I<string> 484=item B<-xrm> I<string>
455 485
456Works like the X Toolkit option of the same name, by adding the I<string> 486Works like the X Toolkit option of the same name, by adding the I<string>
457as if it were specified in a resource file. Resource values specified this 487as if it were specified in a resource file. Resource values specified this
505If this switch is given, @@RXVT_NAME@@ will not create any utmp/wtmp 535If this switch is given, @@RXVT_NAME@@ will not create any utmp/wtmp
506entries and will not tinker with pty/tty permissions - you have to do that 536entries and will not tinker with pty/tty permissions - you have to do that
507yourself if you want that. 537yourself if you want that.
508 538
509As an extremely special case, specifying C<-1> will completely suppress 539As an extremely special case, specifying C<-1> will completely suppress
510pty/tty operations. 540pty/tty operations, which is probably only useful in conjunction with some
541perl extension that manages the terminal.
511 542
512Here is a example in perl that illustrates how this option can be used (a 543Here is a example in perl that illustrates how this option can be used (a
513longer example is in F<doc/pty-fd>): 544longer example is in F<doc/pty-fd>):
514 545
515 use IO::Pty; 546 use IO::Pty;
529Comma-separated list of perl extension scripts to use (or not to use) in 560Comma-separated list of perl extension scripts to use (or not to use) in
530this terminal instance. See resource B<perl-ext> for details. 561this terminal instance. See resource B<perl-ext> for details.
531 562
532=back 563=back
533 564
534=head1 RESOURCES (available also as long-options) 565=head1 RESOURCES
535 566
536Note: `@@RXVT_NAME@@ --help' gives a list of all resources (long 567Note: `@@RXVT_NAME@@ --help' gives a list of all resources (long
537options) compiled into your version. 568options) compiled into your version. All resources are also available as
569long-options.
538 570
539You can set and change the resources using X11 tools like B<xrdb>. Many 571You can set and change the resources using X11 tools like B<xrdb>. Many
540distribution do also load settings from the B<~/.Xresources> file when X 572distribution do also load settings from the B<~/.Xresources> file when X
541starts. @@RXVT_NAME@@ will consult the following files/resources in order, 573starts. @@RXVT_NAME@@ will consult the following files/resources in order,
542with later settings overwriting earlier ones: 574with later settings overwriting earlier ones:
564=item B<depth:> I<bitdepth> 596=item B<depth:> I<bitdepth>
565 597
566Compile I<xft>: Attempt to find a visual with the given bit depth; 598Compile I<xft>: Attempt to find a visual with the given bit depth;
567option B<-depth>. 599option B<-depth>.
568 600
601=item B<buffered:> I<boolean>
602
603Compile I<xft>: Turn on/off double-buffering for xft (default enabled).
604On some card/driver combination enabling it slightly decreases
605performance, on most it greatly helps it. The slowdown is small, so it
606should normally be enabled.
607
569=item B<geometry:> I<geom> 608=item B<geometry:> I<geom>
570 609
571Create the window with the specified X window geometry [default 80x24]; 610Create the window with the specified X window geometry [default 80x24];
572option B<-geometry>. 611option B<-geometry>.
573 612
656 695
657B<False>: specify that everything is to be displayed, even 696B<False>: specify that everything is to be displayed, even
658if the refresh is too fast for the human eye to read anything (or the 697if the refresh is too fast for the human eye to read anything (or the
659monitor to display anything); option B<+ss>. 698monitor to display anything); option B<+ss>.
660 699
661=item B<inheritPixmap:> I<boolean> 700=item B<transparent:> I<boolean>
662 701
663B<True>: make the background inherit the parent windows' pixmap, giving 702Turn on/off illusion of a transparent window background.
664artificial transparency. B<False>: do not inherit the parent windows'
665pixmap.
666 703
667I<Please note that transparency of any kind if completely unsupported by 704B<inheritPixmap> is still accepted as an obsolete alias but will be removed in
668the author. Don't bug him with installation questions!> 705future versions.
706
707I<Please address all transparency related issues to Sasha Vasko at
708sasha@aftercode.net. Read the FAQ (man 7 @@RXVT_NAME@@)!>
669 709
670=item B<fading:> I<number> 710=item B<fading:> I<number>
671 711
672Fade the text by the given percentage when focus is lost; option B<-fade>. 712Fade the text by the given percentage when focus is lost; option B<-fade>.
673 713
690 730
691Specify background blending type; option B<-blt>. 731Specify background blending type; option B<-blt>.
692 732
693=item B<blurRadius:> I<number> 733=item B<blurRadius:> I<number>
694 734
695Apply Gaussian Blurr with the specified radius to the transparent 735Apply gaussian blur with the specified radius to the transparent
696background image; option B<-blr>. 736background image; option B<-blr>.
737
738=item B<iconFile:> I<file>
739
740Set the application icon pixmap; option B<-icon>.
697 741
698=item B<scrollColor:> I<colour> 742=item B<scrollColor:> I<colour>
699 743
700Use the specified colour for the scrollbar [default #B2B2B2]. 744Use the specified colour for the scrollbar [default #B2B2B2].
701 745
720an integer number of images in that direction. No image will be magnified 764an integer number of images in that direction. No image will be magnified
721beyond 10 times its original size. The maximum permitted scale is 1000. 765beyond 10 times its original size. The maximum permitted scale is 1000.
722Additional operations can be specified after colon B<:op1:op2...>. 766Additional operations can be specified after colon B<:op1:op2...>.
723Supported operations are: 767Supported operations are:
724 768
725 tile force background image to be tiled and not scaled. Equivalent to 0x0, 769 tile force background image to be tiled and not scaled. Equivalent to 0x0
726 propscale will scale image keeping proportions, 770 propscale will scale image keeping proportions
727 auto will scale image to match window size. Equivalent to 100x100; 771 auto will scale image to match window size. Equivalent to 100x100
728 hscale will scale image horizontally to the window size; 772 hscale will scale image horizontally to the window size
729 vscale will scale image vertically to the window size; 773 vscale will scale image vertically to the window size
730 scale will scale image to match window size; 774 scale will scale image to match window size
731 root will tile image as if it was a root window background, auto-adjusting 775 root will tile image as if it was a root window background, auto-adjusting
732 whenever terminal window moves. 776 whenever terminal window moves
733 777
734If used in conjunction with B<-tr> option, the specified pixmap will be 778If used in conjunction with B<-tr> option, the specified pixmap will be
735blended over transparency image using either alpha-blending, or any 779blended over transparency image using either alpha-blending, or any
736other blending type, specified with B<-blt "type"> option. 780other blending type, specified with B<-blt "type"> option.
737 781
802text font will being used for the given style. 846text font will being used for the given style.
803 847
804=item B<intensityStyles:> I<boolean> 848=item B<intensityStyles:> I<boolean>
805 849
806When font styles are not enabled, or this option is enabled (B<True>, 850When font styles are not enabled, or this option is enabled (B<True>,
807option B<-is>, the default), bold and italic font styles imply high 851option B<-is>, the default), bold/blink font styles imply high
808intensity foreground/background colours. Disabling this option (B<False>, 852intensity foreground/background colours. Disabling this option (B<False>,
809option B<+is>) disables this behaviour, the high intensity colours are not 853option B<+is>) disables this behaviour, the high intensity colours are not
810reachable. 854reachable.
811 855
812=item B<selectstyle:> I<mode>
813
814Set mouse selection style to B<old> which is 2.20, B<oldword> which
815is xterm style with 2.20 old word selection, or anything else which
816gives xterm style selection. Only effective when the original (non-perl)
817selection code is in use.
818
819=item B<scrollstyle:> I<mode>
820
821Set scrollbar style to B<rxvt>, B<plain>, B<next> or B<xterm>. B<plain> is
822the author's favourite.
823
824=item B<title:> I<string> 856=item B<title:> I<string>
825 857
826Set window title string, the default title is the command-line 858Set window title string, the default title is the command-line
827specified after the B<-e> option, if any, otherwise the application 859specified after the B<-e> option, if any, otherwise the application
828name; option B<-title>. 860name; option B<-title>.
841=item B<urgentOnBell:> I<boolean> 873=item B<urgentOnBell:> I<boolean>
842 874
843B<True>: set the urgency hint for the wm on receipt of a bell character. 875B<True>: set the urgency hint for the wm on receipt of a bell character.
844B<False>: do not set the urgency hint [default]. 876B<False>: do not set the urgency hint [default].
845 877
878@@RXVT_NAME@@ resets the urgency hint on every focus change.
879
846=item B<visualBell:> I<boolean> 880=item B<visualBell:> I<boolean>
847 881
848B<True>: use visual bell on receipt of a bell character; option B<-vb>. 882B<True>: use visual bell on receipt of a bell character; option B<-vb>.
849B<False>: no visual bell [default]; option B<+vb>. 883B<False>: no visual bell [default]; option B<+vb>.
850 884
872 906
873 URxvt.print-pipe: cat > $(TMPDIR=$HOME mktemp urxvt.XXXXXX) 907 URxvt.print-pipe: cat > $(TMPDIR=$HOME mktemp urxvt.XXXXXX)
874 908
875This creates a new file in your home directory with the screen contents 909This creates a new file in your home directory with the screen contents
876every time you hit C<Print>. 910every time you hit C<Print>.
911
912=item B<scrollstyle:> I<mode>
913
914Set scrollbar style to B<rxvt>, B<plain>, B<next> or B<xterm>. B<plain> is
915the author's favourite.
877 916
878=item B<scrollBar:> I<boolean> 917=item B<scrollBar:> I<boolean>
879 918
880B<True>: enable the scrollbar [default]; option B<-sb>. B<False>: 919B<True>: enable the scrollbar [default]; option B<-sb>. B<False>:
881disable the scrollbar; option B<+sb>. 920disable the scrollbar; option B<+sb>.
968 1007
969=item B<cursorBlink:> I<boolean> 1008=item B<cursorBlink:> I<boolean>
970 1009
971B<True>: blink the cursor. B<False>: do not blink the cursor [default]; 1010B<True>: blink the cursor. B<False>: do not blink the cursor [default];
972option B<-bc>. 1011option B<-bc>.
1012
1013=item B<cursorUnderline:> I<boolean>
1014
1015B<True>: Make the cursor underlined. B<False>: Make the cursor a box [default];
1016option B<-uc>.
973 1017
974=item B<pointerBlank:> I<boolean> 1018=item B<pointerBlank:> I<boolean>
975 1019
976B<True>: blank the pointer when a key is pressed or after a set number 1020B<True>: blank the pointer when a key is pressed or after a set number
977of seconds of inactivity. B<False>: the pointer is always visible 1021of seconds of inactivity. B<False>: the pointer is always visible
1080 1124
1081=item B<secondaryScroll:> I<boolean> 1125=item B<secondaryScroll:> I<boolean>
1082 1126
1083Turn on/off secondary screen scroll (default enabled). If this 1127Turn on/off secondary screen scroll (default enabled). If this
1084option is enabled, scrolls on the secondary screen will change the 1128option is enabled, scrolls on the secondary screen will change the
1085scrollback buffer and switching to/from the secondary screen will 1129scrollback buffer and, when secondaryScreen is off, switching
1086instead scroll the screen up. 1130to/from the secondary screen will instead scroll the screen up.
1087 1131
1088=item B<hold>: I<boolean> 1132=item B<hold>: I<boolean>
1089 1133
1090Turn on/off hold window after exit support. If enabled, @@RXVT_NAME@@ 1134Turn on/off hold window after exit support. If enabled, @@RXVT_NAME@@
1091will not immediately destroy its window when the program executed within 1135will not immediately destroy its window when the program executed within
1092it exits. Instead, it will wait till it is being killed or closed by the 1136it exits. Instead, it will wait till it is being killed or closed by the
1093user. 1137user.
1138
1139=item B<chdir>: I<path>
1140
1141Sets the working directory for the shell (or the command specified via
1142B<-e>). The I<path> must be an absolute path and it must exist for
1143@@RXVT_NAME@@ to start. If it isn't specified then the current working
1144directory will be used; option B<-cd>.
1094 1145
1095=item B<keysym.>I<sym>: I<string> 1146=item B<keysym.>I<sym>: I<string>
1096 1147
1097Compile I<frills>: Associate I<string> with keysym I<sym>. The 1148Compile I<frills>: Associate I<string> with keysym I<sym>. The
1098intervening resource name B<keysym.> cannot be omitted. 1149intervening resource name B<keysym.> cannot be omitted.
1205all instances, while B<perl-ext> is used for specific instances. 1256all instances, while B<perl-ext> is used for specific instances.
1206 1257
1207=item B<perl-eval>: I<string> 1258=item B<perl-eval>: I<string>
1208 1259
1209Perl code to be evaluated when all extensions have been registered. See 1260Perl code to be evaluated when all extensions have been registered. See
1210the @@RXVT_NAME@@perl(3) manpage. Due to security reasons, this resource 1261the @@RXVT_NAME@@perl(3) manpage.
1211will be ignored when running setuid/setgid.
1212 1262
1213=item B<perl-lib>: I<path> 1263=item B<perl-lib>: I<path>
1214 1264
1215Colon-separated list of additional directories that hold extension 1265Colon-separated list of additional directories that hold extension
1216scripts. When looking for extensions specified by the C<perl> resource, 1266scripts. When looking for extensions specified by the C<perl> resource,
1217@@RXVT_NAME@@ will first look in these directories and then in 1267@@RXVT_NAME@@ will first look in these directories and then in
1218F<@@RXVT_LIBDIR@@/urxvt/perl/>. Due to security reasons, this resource 1268F<@@RXVT_LIBDIR@@/urxvt/perl/>.
1219will be ignored when running setuid/setgid.
1220 1269
1221See the @@RXVT_NAME@@perl(3) manpage. 1270See the @@RXVT_NAME@@perl(3) manpage.
1222 1271
1223=item B<< selection.pattern-I<idx> >>: I<perl-regex> 1272=item B<< selection.pattern-I<idx> >>: I<perl-regex>
1224 1273
1459=back 1508=back
1460 1509
1461=head2 ALPHA CHANNEL SUPPORT 1510=head2 ALPHA CHANNEL SUPPORT
1462 1511
1463If Xft support has been compiled in and as long as Xft/Xrender/X don't get 1512If Xft support has been compiled in and as long as Xft/Xrender/X don't get
1464their act together, rxvt-unicode will support C<rgba:rrrr/gggg/bbbb/aaaa> 1513their act together, rxvt-unicode will do it's own alpha channel management:
1465(recommended, but B<MUST> have 4 digits/component) colour specifications, 1514
1466in addition to the ones provided by X, where the additional A component 1515You can prefix any color with an opaquenes percentage enclosed in
1516brackets, i.e. C<[percent]>, where C<percent> is a decimal percentage
1517(0-100) that specifies the opacity of the color, where C<0> is completely
1518transparent and C<100> is completely opaque. For example, C<[50]red> is a
1519half-transparent red, while C<[95]#00ff00> is an almost opaque green. This
1520is the recommended format to specify transparency values, and works with
1521all ways to specify a colour.
1522
1523For complete control, rxvt-unicode also supports
1524C<rgba:rrrr/gggg/bbbb/aaaa> (exactly four hex digits/component) colour
1525specifications, where the additional C<aaaa> component specifies opacity
1467specifies opacity (alpha) values. The minimum value of C<0> is completely 1526(alpha) values. The minimum value of C<0000> is completely transparent,
1468transparent). You can also prefix any color with C<[percent]>, where 1527while C<ffff> is completely opaque). The two example colours from
1469C<percent> is a decimal percentage (0-100) that specifies the opacity of 1528earlier could also be specified as C<rgba:ff00/0000/0000/8000> and
1470the color, where C<0> is completely transparent and C<100> is completelxy 1529C<rgba:0000/ff00/0000/f332>.
1471opaque.
1472 1530
1473You probably need to specify B<"-depth 32">, too, and have the luck that 1531You probably need to specify B<"-depth 32">, too, to force a visual with
1474your X-server uses ARGB pixel layout, as X is far from just supporting 1532alpha channels, and have the luck that your X-server uses ARGB pixel
1475ARGB visuals out of the box, and rxvt-unicode just fudges around. 1533layout, as X is far from just supporting ARGB visuals out of the box, and
1534rxvt-unicode just fudges around.
1476 1535
1477For example, the following selects an almost completely transparent red 1536For example, the following selects an almost completely transparent black
1478background, and an almost opaque pink foreground: 1537background, and an almost opaque pink foreground:
1479 1538
1480 @@RXVT_NAME@@ -depth 32 -bg rgba:0000/0000/0000/aaaa -fg "[80]pink" 1539 @@RXVT_NAME@@ -depth 32 -bg rgba:0000/0000/0000/4444 -fg "[80]pink"
1481 1540
1482I<Please note that transparency of any kind if completely unsupported by 1541When not using a background image, then the interpretation of the
1483the author. Don't bug him with installation questions!> 1542alpha channel is up to your compositing manager (most interpret it as
1543transparency of course).
1544
1545When using a background pixmap or pseudo-transparency, then the background
1546colour will always behave as if it were completely transparent (so the
1547background image shows instead), regardless of how it was specified, while
1548other colours will either be transparent as specified (the background
1549image will show through) on servers supporting the RENDER extension, or
1550fully opaque on servers not supporting the RENDER EXTENSION.
1551
1552Please note that due to bugs in Xft, specifying alpha values might result
1553in garbage being displayed when the X-server does not support the RENDER
1554extension.
1484 1555
1485=head1 ENVIRONMENT 1556=head1 ENVIRONMENT
1486 1557
1487B<@@RXVT_NAME@@> sets and/or uses the following environment variables: 1558B<@@RXVT_NAME@@> sets and/or uses the following environment variables:
1488 1559
1522C<--with-terminfo=PATH>. 1593C<--with-terminfo=PATH>.
1523 1594
1524=item B<DISPLAY> 1595=item B<DISPLAY>
1525 1596
1526Used by @@RXVT_NAME@@ to connect to the display and set to the correct 1597Used by @@RXVT_NAME@@ to connect to the display and set to the correct
1527display in its child processes. 1598display in its child processes if C<-display> isn't used to override. It
1599defaults to C<:0> if it doesn't exist.
1528 1600
1529=item B<SHELL> 1601=item B<SHELL>
1530 1602
1531The shell to be used for command execution, defaults to C</bin/sh>. 1603The shell to be used for command execution, defaults to C</bin/sh>.
1532 1604

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