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Revision 1.12 by root, Mon Jan 2 22:23:26 2006 UTC vs.
Revision 1.217 by root, Sun Jun 10 13:58:05 2012 UTC

		1	=encoding utf8
		2
1	=head1 NAME	3	=head1 NAME
2		4
3	@@RXVT_NAME@@perl - rxvt-unicode's embedded perl interpreter	5	@@RXVT_NAME@@perl - rxvt-unicode's embedded perl interpreter
4		6
5	=head1 SYNOPSIS	7	=head1 SYNOPSIS
…		…
15		17
16	@@RXVT_NAME@@ --perl-lib $HOME -pe grab_test	18	@@RXVT_NAME@@ --perl-lib $HOME -pe grab_test
17		19
18	=head1 DESCRIPTION	20	=head1 DESCRIPTION
19		21
20	Everytime a terminal object gets created, scripts specified via the	22	Every time a terminal object gets created, extension scripts specified via
21	C<perl> resource are loaded and associated with it.	23	the C<perl> resource are loaded and associated with it.
22		24
23	Scripts are compiled in a 'use strict' and 'use utf8' environment, and	25	Scripts are compiled in a 'use strict "vars"' and 'use utf8' environment, and
24	thus must be encoded as UTF-8.	26	thus must be encoded as UTF-8.
25		27
26	Each script will only ever be loaded once, even in @@RXVT_NAME@@d, where	28	Each script will only ever be loaded once, even in @@RXVT_NAME@@d, where
27	scripts will be shared (But not enabled) for all terminals.	29	scripts will be shared (but not enabled) for all terminals.
		30
		31	You can disable the embedded perl interpreter by setting both "perl-ext"
		32	and "perl-ext-common" resources to the empty string.
		33
		34	=head1 PREPACKAGED EXTENSIONS
		35
		36	This section describes the extensions delivered with this release. You can
		37	find them in F<@@RXVT_LIBDIR@@/urxvt/perl/>.
		38
		39	You can activate them like this:
		40
		41	@@RXVT_NAME@@ -pe <extensionname>
		42
		43	Or by adding them to the resource for extensions loaded by default:
		44
		45	URxvt.perl-ext-common: default,selection-autotransform
		46
		47	=over 4
		48
		49	=item selection (enabled by default)
		50
		51	(More) intelligent selection. This extension tries to be more intelligent
		52	when the user extends selections (double-click and further clicks). Right
		53	now, it tries to select words, urls and complete shell-quoted
		54	arguments, which is very convenient, too, if your F<ls> supports
		55	C<--quoting-style=shell>.
		56
		57	A double-click usually selects the word under the cursor, further clicks
		58	will enlarge the selection.
		59
		60	The selection works by trying to match a number of regexes and displaying
		61	them in increasing order of length. You can add your own regexes by
		62	specifying resources of the form:
		63
		64	URxvt.selection.pattern-0: perl-regex
		65	URxvt.selection.pattern-1: perl-regex
		66	...
		67
		68	The index number (0, 1...) must not have any holes, and each regex must
		69	contain at least one pair of capturing parentheses, which will be used for
		70	the match. For example, the following adds a regex that matches everything
		71	between two vertical bars:
		72
		73	URxvt.selection.pattern-0: \\|([^|]+)\\|
		74
		75	Another example: Programs I use often output "absolute path: " at the
		76	beginning of a line when they process multiple files. The following
		77	pattern matches the filename (note, there is a single space at the very
		78	end):
		79
		80	URxvt.selection.pattern-0: ^(/[^:]+):\
		81
		82	You can look at the source of the selection extension to see more
		83	interesting uses, such as parsing a line from beginning to end.
		84
		85	This extension also offers following bindable keyboard commands:
		86
		87	=over 4
		88
		89	=item rot13
		90
		91	Rot-13 the selection when activated. Used via keyboard trigger:
		92
		93	URxvt.keysym.C-M-r: perl:selection:rot13
		94
		95	=back
		96
		97	=item option-popup (enabled by default)
		98
		99	Binds a popup menu to Ctrl-Button2 that lets you toggle (some) options at
		100	runtime.
		101
		102	Other extensions can extend this popup menu by pushing a code reference
		103	onto C<@{ $term->{option_popup_hook} }>, which gets called whenever the
		104	popup is being displayed.
		105
		106	Its sole argument is the popup menu, which can be modified. It should
		107	either return nothing or a string, the initial boolean value and a code
		108	reference. The string will be used as button text and the code reference
		109	will be called when the toggle changes, with the new boolean value as
		110	first argument.
		111
		112	The following will add an entry C<myoption> that changes
		113	C<< $self->{myoption} >>:
		114
		115	push @{ $self->{term}{option_popup_hook} }, sub {
		116	("my option" => $myoption, sub { $self->{myoption} = $_[0] })
		117	};
		118
		119	=item selection-popup (enabled by default)
		120
		121	Binds a popup menu to Ctrl-Button3 that lets you convert the selection
		122	text into various other formats/action (such as uri unescaping, perl
		123	evaluation, web-browser starting etc.), depending on content.
		124
		125	Other extensions can extend this popup menu by pushing a code reference
		126	onto C<@{ $term->{selection_popup_hook} }>, which gets called whenever the
		127	popup is being displayed.
		128
		129	Its sole argument is the popup menu, which can be modified. The selection
		130	is in C<$_>, which can be used to decide whether to add something or not.
		131	It should either return nothing or a string and a code reference. The
		132	string will be used as button text and the code reference will be called
		133	when the button gets activated and should transform C<$_>.
		134
		135	The following will add an entry C<a to b> that transforms all C<a>s in
		136	the selection to C<b>s, but only if the selection currently contains any
		137	C<a>s:
		138
		139	push @{ $self->{term}{selection_popup_hook} }, sub {
		140	/a/ ? ("a to b" => sub { s/a/b/g }
		141	: ()
		142	};
		143
		144	=item searchable-scrollback<hotkey> (enabled by default)
		145
		146	Adds regex search functionality to the scrollback buffer, triggered
		147	by a hotkey (default: C<M-s>). While in search mode, normal terminal
		148	input/output is suspended and a regex is displayed at the bottom of the
		149	screen.
		150
		151	Inputting characters appends them to the regex and continues incremental
		152	search. C<BackSpace> removes a character from the regex, C<Up> and C<Down>
		153	search upwards/downwards in the scrollback buffer, C<End> jumps to the
		154	bottom. C<Escape> leaves search mode and returns to the point where search
		155	was started, while C<Enter> or C<Return> stay at the current position and
		156	additionally stores the first match in the current line into the primary
		157	selection if the C<Shift> modifier is active.
		158
		159	The regex defaults to "(?i)", resulting in a case-insensitive search. To
		160	get a case-sensitive search you can delete this prefix using C<BackSpace>
		161	or simply use an uppercase character which removes the "(?i)" prefix.
		162
		163	See L<perlre> for more info about perl regular expression syntax.
		164
		165	=item readline (enabled by default)
		166
		167	A support package that tries to make editing with readline easier. At
		168	the moment, it reacts to clicking shift-left mouse button by trying to
		169	move the text cursor to this position. It does so by generating as many
		170	cursor-left or cursor-right keypresses as required (this only works
		171	for programs that correctly support wide characters).
		172
		173	To avoid too many false positives, this is only done when:
		174
		175	=over 4
		176
		177	=item - the tty is in ICANON state.
		178
		179	=item - the text cursor is visible.
		180
		181	=item - the primary screen is currently being displayed.
		182
		183	=item - the mouse is on the same (multi-row-) line as the text cursor.
		184
		185	=back
		186
		187	The normal selection mechanism isn't disabled, so quick successive clicks
		188	might interfere with selection creation in harmless ways.
		189
		190	=item selection-autotransform
		191
		192	This selection allows you to do automatic transforms on a selection
		193	whenever a selection is made.
		194
		195	It works by specifying perl snippets (most useful is a single C<s///>
		196	operator) that modify C<$_> as resources:
		197
		198	URxvt.selection-autotransform.0: transform
		199	URxvt.selection-autotransform.1: transform
		200	...
		201
		202	For example, the following will transform selections of the form
		203	C<filename:number>, often seen in compiler messages, into C<vi +$filename
		204	$word>:
		205
		206	URxvt.selection-autotransform.0: s/^([^:[:space:]]+):(\\d+):?$/vi +$2 \\Q$1\\E\\x0d/
		207
		208	And this example matches the same,but replaces it with vi-commands you can
		209	paste directly into your (vi :) editor:
		210
		211	URxvt.selection-autotransform.0: s/^([^:[:space:]]+(\\d+):?$/:e \\Q$1\\E\\x0d:$2\\x0d/
		212
		213	Of course, this can be modified to suit your needs and your editor :)
		214
		215	To expand the example above to typical perl error messages ("XXX at
		216	FILENAME line YYY."), you need a slightly more elaborate solution:
		217
		218	URxvt.selection.pattern-0: ( at .*? line \\d+[,.])
		219	URxvt.selection-autotransform.0: s/^ at (.*?) line (\\d+)[,.]$/:e \\Q$1\E\\x0d:$2\\x0d/
		220
		221	The first line tells the selection code to treat the unchanging part of
		222	every error message as a selection pattern, and the second line transforms
		223	the message into vi commands to load the file.
		224
		225	=item tabbed
		226
		227	This transforms the terminal into a tabbar with additional terminals, that
		228	is, it implements what is commonly referred to as "tabbed terminal". The topmost line
		229	displays a "[NEW]" button, which, when clicked, will add a new tab, followed by one
		230	button per tab.
		231
		232	Clicking a button will activate that tab. Pressing B<Shift-Left> and
		233	B<Shift-Right> will switch to the tab left or right of the current one,
		234	while B<Shift-Down> creates a new tab.
		235
		236	The tabbar itself can be configured similarly to a normal terminal, but
		237	with a resource class of C<URxvt.tabbed>. In addition, it supports the
		238	following four resources (shown with defaults):
		239
		240	URxvt.tabbed.tabbar-fg: <colour-index, default 3>
		241	URxvt.tabbed.tabbar-bg: <colour-index, default 0>
		242	URxvt.tabbed.tab-fg: <colour-index, default 0>
		243	URxvt.tabbed.tab-bg: <colour-index, default 1>
		244
		245	See I<COLOR AND GRAPHICS> in the @@RXVT_NAME@@(1) manpage for valid
		246	indices.
		247
		248	=item matcher
		249
		250	Uses per-line display filtering (C<on_line_update>) to underline text
		251	matching a certain pattern and make it clickable. When clicked with the
		252	mouse button specified in the C<matcher.button> resource (default 2, or
		253	middle), the program specified in the C<matcher.launcher> resource
		254	(default, the C<urlLauncher> resource, C<sensible-browser>) will be started
		255	with the matched text as first argument. The default configuration is
		256	suitable for matching URLs and launching a web browser, like the
		257	former "mark-urls" extension.
		258
		259	The default pattern to match URLs can be overridden with the
		260	C<matcher.pattern.0> resource, and additional patterns can be specified
		261	with numbered patterns, in a manner similar to the "selection" extension.
		262	The launcher can also be overridden on a per-pattern basis.
		263
		264	It is possible to activate the most recently seen match or a list of matches
		265	from the keyboard. Simply bind a keysym to "perl:matcher:last" or
		266	"perl:matcher:list" as seen in the example below.
		267
		268	Example configuration:
		269
		270	URxvt.perl-ext: default,matcher
		271	URxvt.urlLauncher: sensible-browser
		272	URxvt.keysym.C-Delete: perl:matcher:last
		273	URxvt.keysym.M-Delete: perl:matcher:list
		274	URxvt.matcher.button: 1
		275	URxvt.matcher.pattern.1: \\bwww\\.[\\w-]+\\.[\\w./?&@#-]*[\\w/-]
		276	URxvt.matcher.pattern.2: \\B(/\\S+?):(\\d+)(?=:|$)
		277	URxvt.matcher.launcher.2: gvim +$2 $1
		278
		279	=item xim-onthespot
		280
		281	This (experimental) perl extension implements OnTheSpot editing. It does
		282	not work perfectly, and some input methods don't seem to work well with
		283	OnTheSpot editing in general, but it seems to work at least for SCIM and
		284	kinput2.
		285
		286	You enable it by specifying this extension and a preedit style of
		287	C<OnTheSpot>, i.e.:
		288
		289	@@RXVT_NAME@@ -pt OnTheSpot -pe xim-onthespot
		290
		291	=item kuake<hotkey>
		292
		293	A very primitive quake-console-like extension. It was inspired by a
		294	description of how the programs C<kuake> and C<yakuake> work: Whenever the
		295	user presses a global accelerator key (by default C<F10>), the terminal
		296	will show or hide itself. Another press of the accelerator key will hide
		297	or show it again.
		298
		299	Initially, the window will not be shown when using this extension.
		300
		301	This is useful if you need a single terminal that is not using any desktop
		302	space most of the time but is quickly available at the press of a key.
		303
		304	The accelerator key is grabbed regardless of any modifiers, so this
		305	extension will actually grab a physical key just for this function.
		306
		307	If you want a quake-like animation, tell your window manager to do so
		308	(fvwm can do it).
		309
		310	=item overlay-osc
		311
		312	This extension implements some OSC commands to display timed popups on the
		313	screen - useful for status displays from within scripts. You have to read
		314	the sources for more info.
		315
		316	=item block-graphics-to-ascii
		317
		318	A not very useful example of filtering all text output to the terminal
		319	by replacing all line-drawing characters (U+2500 .. U+259F) by a
		320	similar-looking ascii character.
		321
		322	=item digital-clock
		323
		324	Displays a digital clock using the built-in overlay.
		325
		326	=item remote-clipboard
		327
		328	Somewhat of a misnomer, this extension adds two menu entries to the
		329	selection popup that allows one to run external commands to store the
		330	selection somewhere and fetch it again.
		331
		332	We use it to implement a "distributed selection mechanism", which just
		333	means that one command uploads the file to a remote server, and another
		334	reads it.
		335
		336	The commands can be set using the C<URxvt.remote-selection.store> and
		337	C<URxvt.remote-selection.fetch> resources. The first should read the
		338	selection to store from STDIN (always in UTF-8), the second should provide
		339	the selection data on STDOUT (also in UTF-8).
		340
		341	The defaults (which are likely useless to you) use rsh and cat:
		342
		343	URxvt.remote-selection.store: rsh ruth 'cat >/tmp/distributed-selection'
		344	URxvt.remote-selection.fetch: rsh ruth 'cat /tmp/distributed-selection'
		345
		346	=item selection-pastebin
		347
		348	This is a little rarely useful extension that uploads the selection as
		349	textfile to a remote site (or does other things). (The implementation is
		350	not currently secure for use in a multiuser environment as it writes to
		351	F</tmp> directly.).
		352
		353	It listens to the C<selection-pastebin:remote-pastebin> keyboard command,
		354	i.e.
		355
		356	URxvt.keysym.C-M-e: perl:selection-pastebin:remote-pastebin
		357
		358	Pressing this combination runs a command with C<%> replaced by the name of
		359	the textfile. This command can be set via a resource:
		360
		361	URxvt.selection-pastebin.cmd: rsync -apP % ruth:/var/www/www.ta-sa.org/files/txt/.
		362
		363	And the default is likely not useful to anybody but the few people around
		364	here :)
		365
		366	The name of the textfile is the hex encoded md5 sum of the selection, so
		367	the same content should lead to the same filename.
		368
		369	After a successful upload the selection will be replaced by the text given
		370	in the C<selection-pastebin-url> resource (again, the % is the placeholder
		371	for the filename):
		372
		373	URxvt.selection-pastebin.url: http://www.ta-sa.org/files/txt/%
		374
		375	I<Note to xrdb users:> xrdb uses the C preprocessor, which might interpret
		376	the double C</> characters as comment start. Use C<\057\057> instead,
		377	which works regardless of whether xrdb is used to parse the resource file
		378	or not.
		379
		380	=item macosx-clipboard and macosx-clipboard-native
		381
		382	These two modules implement an extended clipboard for Mac OS X. They are
		383	used like this:
		384
		385	URxvt.perl-ext-common: default,macosx-clipboard
		386	URxvt.keysym.M-c: perl:macosx-clipboard:copy
		387	URxvt.keysym.M-v: perl:macosx-clipboard:paste
		388
		389	The difference between them is that the native variant requires a
		390	perl from apple's devkit or so, and C<macosx-clipboard> requires the
		391	C<Mac::Pasteboard> module, works with other perls, has fewer bugs, is
		392	simpler etc. etc.
		393
		394	=item example-refresh-hooks
		395
		396	Displays a very simple digital clock in the upper right corner of the
		397	window. Illustrates overwriting the refresh callbacks to create your own
		398	overlays or changes.
		399
		400	=item confirm-paste
		401
		402	Displays a confirmation dialog when a paste containing at least a full
		403	line is detected.
		404
		405	=item bell-command
		406
		407	Runs the command specified by the C<URxvt.bell-command> resource when
		408	a bell event occurs. For example, the following pops up a notification
		409	bubble with the text "Beep, Beep" using notify-send:
		410
		411	URxvt.bell-command: notify-send "Beep, Beep"
		412
		413	=back
		414
		415	=head1 API DOCUMENTATION
28		416
29	=head2 General API Considerations	417	=head2 General API Considerations
30		418
31	All objects (such as terminals, time watchers etc.) are typical	419	All objects (such as terminals, time watchers etc.) are typical
32	reference-to-hash objects. The hash can be used to store anything you	420	reference-to-hash objects. The hash can be used to store anything you
33	like. All members starting with an underscore (such as C<_ptr> or	421	like. All members starting with an underscore (such as C<_ptr> or
34	C<_hook>) are reserved for internal uses and must not be accessed or	422	C<_hook>) are reserved for internal uses and B<MUST NOT> be accessed or
35	modified).	423	modified).
36		424
37	When objects are destroyed on the C++ side, the perl object hashes are	425	When objects are destroyed on the C++ side, the perl object hashes are
38	emptied, so its best to store related objects such as time watchers and	426	emptied, so its best to store related objects such as time watchers and
39	the like inside the terminal object so they get destroyed as soon as the	427	the like inside the terminal object so they get destroyed as soon as the
40	terminal is destroyed.	428	terminal is destroyed.
41		429
		430	Argument names also often indicate the type of a parameter. Here are some
		431	hints on what they mean:
		432
		433	=over 4
		434
		435	=item $text
		436
		437	Rxvt-unicode's special way of encoding text, where one "unicode" character
		438	always represents one screen cell. See L<ROW_t> for a discussion of this format.
		439
		440	=item $string
		441
		442	A perl text string, with an emphasis on I<text>. It can store all unicode
		443	characters and is to be distinguished with text encoded in a specific
		444	encoding (often locale-specific) and binary data.
		445
		446	=item $octets
		447
		448	Either binary data or - more common - a text string encoded in a
		449	locale-specific way.
		450
		451	=item $keysym
		452
		453	an integer that is a valid X11 keysym code. You can convert a string
		454	into a keysym and viceversa by using C<XStringToKeysym> and
		455	C<XKeysymToString>.
		456
		457	=back
		458
		459	=head2 Extension Objects
		460
		461	Every perl extension is a perl class. A separate perl object is created
		462	for each terminal, and each terminal has its own set of extension objects,
		463	which are passed as the first parameter to hooks. So extensions can use
		464	their C<$self> object without having to think about clashes with other
		465	extensions or other terminals, with the exception of methods and members
		466	that begin with an underscore character C<_>: these are reserved for
		467	internal use.
		468
		469	Although it isn't a C<urxvt::term> object, you can call all methods of the
		470	C<urxvt::term> class on this object.
		471
		472	It has the following methods and data members:
		473
		474	=over 4
		475
		476	=item $urxvt_term = $self->{term}
		477
		478	Returns the C<urxvt::term> object associated with this instance of the
		479	extension. This member I<must not> be changed in any way.
		480
		481	=item $self->enable ($hook_name => $cb, [$hook_name => $cb..])
		482
		483	Dynamically enable the given hooks (named without the C<on_> prefix) for
		484	this extension, replacing any previous hook. This is useful when you want
		485	to overwrite time-critical hooks only temporarily.
		486
		487	=item $self->disable ($hook_name[, $hook_name..])
		488
		489	Dynamically disable the given hooks.
		490
		491	=back
		492
42	=head2 Hooks	493	=head2 Hooks
43		494
44	The following subroutines can be declared in loaded scripts, and will be called	495	The following subroutines can be declared in extension files, and will be
45	whenever the relevant event happens.	496	called whenever the relevant event happens.
46		497
47	All of them must return a boolean value. If it is true, then the event	498	The first argument passed to them is an extension object as described in
48	counts as being I<consumed>, and the invocation of other hooks is skipped,	499	the in the C<Extension Objects> section.
		500
		501	B<All> of these hooks must return a boolean value. If any of the called
		502	hooks returns true, then the event counts as being I<consumed>, and the
49	and the relevant action might not be carried out by the C++ code.	503	relevant action might not be carried out by the C++ code.
50		504
51	When in doubt, return a false value (preferably C<()>).	505	I<< When in doubt, return a false value (preferably C<()>). >>
52		506
53	=over 4	507	=over 4
54		508
55	=item on_init $term	509	=item on_init $term
56		510
57	Called after a new terminal object has been initialized, but before	511	Called after a new terminal object has been initialized, but before
58	windows are created or the command gets run.	512	windows are created or the command gets run. Most methods are unsafe to
		513	call or deliver senseless data, as terminal size and other characteristics
		514	have not yet been determined. You can safely query and change resources
		515	and options, though. For many purposes the C<on_start> hook is a better
		516	place.
		517
		518	=item on_start $term
		519
		520	Called at the very end of initialisation of a new terminal, just before
		521	trying to map (display) the toplevel and returning to the main loop.
		522
		523	=item on_destroy $term
		524
		525	Called whenever something tries to destroy terminal, when the terminal is
		526	still fully functional (not for long, though).
59		527
60	=item on_reset $term	528	=item on_reset $term
61		529
62	Called after the screen is "reset" for any reason, such as resizing or	530	Called after the screen is "reset" for any reason, such as resizing or
63	control sequences. Here is where you can react on changes to size-related	531	control sequences. Here is where you can react on changes to size-related
64	variables.	532	variables.
65		533
66	=item on_start $term	534	=item on_child_start $term, $pid
67		535
68	Called at the very end of initialisation of a new terminal, just before	536	Called just after the child process has been C<fork>ed.
69	returning to the mainloop.	537
		538	=item on_child_exit $term, $status
		539
		540	Called just after the child process has exited. C<$status> is the status
		541	from C<waitpid>.
70		542
71	=item on_sel_make $term, $eventtime	543	=item on_sel_make $term, $eventtime
72		544
73	Called whenever a selection has been made by the user, but before the	545	Called whenever a selection has been made by the user, but before the
74	selection text is copied, so changes to the beginning, end or type of the	546	selection text is copied, so changes to the beginning, end or type of the
…		…
81		553
82	Called whenever a selection has been copied, but before the selection is	554	Called whenever a selection has been copied, but before the selection is
83	requested from the server. The selection text can be queried and changed	555	requested from the server. The selection text can be queried and changed
84	by calling C<< $term->selection >>.	556	by calling C<< $term->selection >>.
85		557
86	Returning a true value aborts selection grabbing. It will still be hilighted.	558	Returning a true value aborts selection grabbing. It will still be highlighted.
87		559
88	=item on_focus_in $term	560	=item on_sel_extend $term
89		561
90	Called whenever the window gets the keyboard focus, before urxvt does	562	Called whenever the user tries to extend the selection (e.g. with a double
91	focus in processing.	563	click) and is either supposed to return false (normal operation), or
		564	should extend the selection itself and return true to suppress the built-in
		565	processing. This can happen multiple times, as long as the callback
		566	returns true, it will be called on every further click by the user and is
		567	supposed to enlarge the selection more and more, if possible.
92		568
93	=item on_focus_out $term	569	See the F<selection> example extension.
94
95	Called wheneever the window loses keyboard focus, before urxvt does focus
96	out processing.
97		570
98	=item on_view_change $term, $offset	571	=item on_view_change $term, $offset
99		572
100	Called whenever the view offset changes, i..e the user or program	573	Called whenever the view offset changes, i.e. the user or program
101	scrolls. Offset C<0> means display the normal terminal, positive values	574	scrolls. Offset C<0> means display the normal terminal, positive values
102	show this many lines of scrollback.	575	show this many lines of scrollback.
103		576
104	=item on_scroll_back $term, $lines, $saved	577	=item on_scroll_back $term, $lines, $saved
105		578
…		…
109		582
110	It is called before lines are scrolled out (so rows 0 .. min ($lines - 1,	583	It is called before lines are scrolled out (so rows 0 .. min ($lines - 1,
111	$nrow - 1) represent the lines to be scrolled out). C<$saved> is the total	584	$nrow - 1) represent the lines to be scrolled out). C<$saved> is the total
112	number of lines that will be in the scrollback buffer.	585	number of lines that will be in the scrollback buffer.
113		586
114	=item on_tty_activity $term *NYI*	587	=item on_osc_seq $term, $op, $args, $resp
115		588
116	Called whenever the program(s) running in the urxvt window send output.	589	Called on every OSC sequence and can be used to suppress it or modify its
		590	behaviour. The default should be to return an empty list. A true value
		591	suppresses execution of the request completely. Make sure you don't get
		592	confused by recursive invocations when you output an OSC sequence within
		593	this callback.
		594
		595	C<on_osc_seq_perl> should be used for new behaviour.
		596
		597	=item on_osc_seq_perl $term, $args, $resp
		598
		599	Called whenever the B<ESC ] 777 ; string ST> command sequence (OSC =
		600	operating system command) is processed. Cursor position and other state
		601	information is up-to-date when this happens. For interoperability, the
		602	string should start with the extension name (sans -osc) and a semicolon,
		603	to distinguish it from commands for other extensions, and this might be
		604	enforced in the future.
		605
		606	For example, C<overlay-osc> uses this:
		607
		608	sub on_osc_seq_perl {
		609	my ($self, $osc, $resp) = @_;
		610
		611	return unless $osc =~ s/^overlay;//;
		612
		613	... process remaining $osc string
		614	}
		615
		616	Be careful not ever to trust (in a security sense) the data you receive,
		617	as its source can not easily be controlled (e-mail content, messages from
		618	other users on the same system etc.).
		619
		620	For responses, C<$resp> contains the end-of-args separator used by the
		621	sender.
		622
		623	=item on_add_lines $term, $string
		624
		625	Called whenever text is about to be output, with the text as argument. You
		626	can filter/change and output the text yourself by returning a true value
		627	and calling C<< $term->scr_add_lines >> yourself. Please note that this
		628	might be very slow, however, as your hook is called for B<all> text being
		629	output.
		630
		631	=item on_tt_write $term, $octets
		632
		633	Called whenever some data is written to the tty/pty and can be used to
		634	suppress or filter tty input.
		635
		636	=item on_tt_paste $term, $octets
		637
		638	Called whenever text is about to be pasted, with the text as argument. You
		639	can filter/change and paste the text yourself by returning a true value
		640	and calling C<< $term->tt_paste >> yourself. C<$octets> is
		641	locale-encoded.
		642
		643	=item on_line_update $term, $row
		644
		645	Called whenever a line was updated or changed. Can be used to filter
		646	screen output (e.g. underline urls or other useless stuff). Only lines
		647	that are being shown will be filtered, and, due to performance reasons,
		648	not always immediately.
		649
		650	The row number is always the topmost row of the line if the line spans
		651	multiple rows.
		652
		653	Please note that, if you change the line, then the hook might get called
		654	later with the already-modified line (e.g. if unrelated parts change), so
		655	you cannot just toggle rendition bits, but only set them.
117		656
118	=item on_refresh_begin $term	657	=item on_refresh_begin $term
119		658
120	Called just before the screen gets redrawn. Can be used for overlay	659	Called just before the screen gets redrawn. Can be used for overlay or
121	or similar effects by modify terminal contents in refresh_begin, and	660	similar effects by modifying the terminal contents in refresh_begin, and
122	restoring them in refresh_end. The built-in overlay and selection display	661	restoring them in refresh_end. The built-in overlay and selection display
123	code is run after this hook, and takes precedence.	662	code is run after this hook, and takes precedence.
124		663
125	=item on_refresh_end $term	664	=item on_refresh_end $term
126		665
127	Called just after the screen gets redrawn. See C<on_refresh_begin>.	666	Called just after the screen gets redrawn. See C<on_refresh_begin>.
128		667
129	=item on_keyboard_command $term, $string	668	=item on_user_command $term, $string
130		669
131	Called whenever the user presses a key combination that has a	670	Called whenever a user-configured event is being activated (e.g. via
132	C<perl:string> action bound to it (see description of the B<keysym>	671	a C<perl:string> action bound to a key, see description of the B<keysym>
133	resource in the @@RXVT_NAME@@(1) manpage).	672	resource in the @@RXVT_NAME@@(1) manpage).
134		673
		674	The event is simply the action string. This interface is assumed to change
		675	slightly in the future.
		676
		677	=item on_register_command $term, $keysym, $modifiermask, $string
		678
		679	Called after parsing a keysym resource but before registering the
		680	associated binding. If this hook returns TRUE the binding is not
		681	registered. It can be used to modify a binding by calling
		682	C<register_command>.
		683
		684	=item on_resize_all_windows $term, $new_width, $new_height
		685
		686	Called just after the new window size has been calculated, but before
		687	windows are actually being resized or hints are being set. If this hook
		688	returns TRUE, setting of the window hints is being skipped.
		689
		690	=item on_x_event $term, $event
		691
		692	Called on every X event received on the vt window (and possibly other
		693	windows). Should only be used as a last resort. Most event structure
		694	members are not passed.
		695
		696	=item on_root_event $term, $event
		697
		698	Like C<on_x_event>, but is called for events on the root window.
		699
		700	=item on_focus_in $term
		701
		702	Called whenever the window gets the keyboard focus, before rxvt-unicode
		703	does focus in processing.
		704
		705	=item on_focus_out $term
		706
		707	Called whenever the window loses keyboard focus, before rxvt-unicode does
		708	focus out processing.
		709
		710	=item on_configure_notify $term, $event
		711
		712	=item on_property_notify $term, $event
		713
		714	=item on_key_press $term, $event, $keysym, $octets
		715
		716	=item on_key_release $term, $event, $keysym
		717
		718	=item on_button_press $term, $event
		719
		720	=item on_button_release $term, $event
		721
		722	=item on_motion_notify $term, $event
		723
		724	=item on_map_notify $term, $event
		725
		726	=item on_unmap_notify $term, $event
		727
		728	Called whenever the corresponding X event is received for the terminal. If
		729	the hook returns true, then the event will be ignored by rxvt-unicode.
		730
		731	The event is a hash with most values as named by Xlib (see the XEvent
		732	manpage), with the additional members C<row> and C<col>, which are the
		733	(real, not screen-based) row and column under the mouse cursor.
		734
		735	C<on_key_press> additionally receives the string rxvt-unicode would
		736	output, if any, in locale-specific encoding.
		737
		738	subwindow.
		739
		740	=item on_client_message $term, $event
		741
		742	=item on_wm_protocols $term, $event
		743
		744	=item on_wm_delete_window $term, $event
		745
		746	Called when various types of ClientMessage events are received (all with
		747	format=32, WM_PROTOCOLS or WM_PROTOCOLS:WM_DELETE_WINDOW).
		748
		749	=item on_bell $term
		750
		751	Called on receipt of a bell character.
		752
135	=back	753	=back
136		754
		755	=cut
		756
		757	package urxvt;
		758
		759	use utf8;
		760	use strict 'vars';
		761	use Carp ();
		762	use Scalar::Util ();
		763	use List::Util ();
		764
		765	our $VERSION = 1;
		766	our $TERM;
		767	our @TERM_INIT; # should go, prevents async I/O etc.
		768	our @TERM_EXT; # should go, prevents async I/O etc.
		769	our @HOOKNAME;
		770	our %HOOKTYPE = map +($HOOKNAME[$_] => $_), 0..$#HOOKNAME;
		771	our %OPTION;
		772
		773	our $LIBDIR;
		774	our $RESNAME;
		775	our $RESCLASS;
		776	our $RXVTNAME;
		777
		778	our $NOCHAR = chr 0xffff;
		779
		780	=head2 Variables in the C<urxvt> Package
		781
		782	=over 4
		783
		784	=item $urxvt::LIBDIR
		785
		786	The rxvt-unicode library directory, where, among other things, the perl
		787	modules and scripts are stored.
		788
		789	=item $urxvt::RESCLASS, $urxvt::RESCLASS
		790
		791	The resource class and name rxvt-unicode uses to look up X resources.
		792
		793	=item $urxvt::RXVTNAME
		794
		795	The basename of the installed binaries, usually C<urxvt>.
		796
		797	=item $urxvt::TERM
		798
		799	The current terminal. This variable stores the current C<urxvt::term>
		800	object, whenever a callback/hook is executing.
		801
		802	=item @urxvt::TERM_INIT
		803
		804	All code references in this array will be called as methods of the next newly
		805	created C<urxvt::term> object (during the C<on_init> phase). The array
		806	gets cleared before the code references that were in it are being executed,
		807	so references can push themselves onto it again if they so desire.
		808
		809	This complements to the perl-eval command line option, but gets executed
		810	first.
		811
		812	=item @urxvt::TERM_EXT
		813
		814	Works similar to C<@TERM_INIT>, but contains perl package/class names, which
		815	get registered as normal extensions after calling the hooks in C<@TERM_INIT>
		816	but before other extensions. Gets cleared just like C<@TERM_INIT>.
		817
		818	=back
		819
137	=head2 Functions in the C<urxvt> Package	820	=head2 Functions in the C<urxvt> Package
138		821
139	=over 4	822	=over 4
140		823
141	=item urxvt::fatal $errormessage	824	=item urxvt::fatal $errormessage
142		825
143	Fatally aborts execution with the given error message. Avoid at all	826	Fatally aborts execution with the given error message (which should
144	costs! The only time this is acceptable is when the terminal process	827	include a trailing newline). Avoid at all costs! The only time this
145	starts up.	828	is acceptable (and useful) is in the init hook, where it prevents the
		829	terminal from starting up.
146		830
147	=item urxvt::warn $string	831	=item urxvt::warn $string
148		832
149	Calls C<rxvt_warn> with the given string which should not include a	833	Calls C<rxvt_warn> with the given string which should include a trailing
150	newline. The module also overwrites the C<warn> builtin with a function	834	newline. The module also overwrites the C<warn> builtin with a function
151	that calls this function.	835	that calls this function.
152		836
153	Using this function has the advantage that its output ends up in the	837	Using this function has the advantage that its output ends up in the
154	correct place, e.g. on stderr of the connecting urxvtc client.	838	correct place, e.g. on stderr of the connecting urxvtc client.
155		839
		840	Messages have a size limit of 1023 bytes currently.
		841
		842	=item @terms = urxvt::termlist
		843
		844	Returns all urxvt::term objects that exist in this process, regardless of
		845	whether they are started, being destroyed etc., so be careful. Only term
		846	objects that have perl extensions attached will be returned (because there
		847	is no urxvt::term object associated with others).
		848
156	=item $time = urxvt::NOW	849	=item $time = urxvt::NOW
157		850
158	Returns the "current time" (as per the event loop).	851	Returns the "current time" (as per the event loop).
159		852
		853	=item urxvt::CurrentTime
		854
		855	=item urxvt::ShiftMask, LockMask, ControlMask, Mod1Mask, Mod2Mask,
		856	Mod3Mask, Mod4Mask, Mod5Mask, Button1Mask, Button2Mask, Button3Mask,
		857	Button4Mask, Button5Mask, AnyModifier
		858
		859	=item urxvt::NoEventMask, KeyPressMask, KeyReleaseMask,
		860	ButtonPressMask, ButtonReleaseMask, EnterWindowMask, LeaveWindowMask,
		861	PointerMotionMask, PointerMotionHintMask, Button1MotionMask, Button2MotionMask,
		862	Button3MotionMask, Button4MotionMask, Button5MotionMask, ButtonMotionMask,
		863	KeymapStateMask, ExposureMask, VisibilityChangeMask, StructureNotifyMask,
		864	ResizeRedirectMask, SubstructureNotifyMask, SubstructureRedirectMask,
		865	FocusChangeMask, PropertyChangeMask, ColormapChangeMask, OwnerGrabButtonMask
		866
		867	=item urxvt::KeyPress, KeyRelease, ButtonPress, ButtonRelease, MotionNotify,
		868	EnterNotify, LeaveNotify, FocusIn, FocusOut, KeymapNotify, Expose,
		869	GraphicsExpose, NoExpose, VisibilityNotify, CreateNotify, DestroyNotify,
		870	UnmapNotify, MapNotify, MapRequest, ReparentNotify, ConfigureNotify,
		871	ConfigureRequest, GravityNotify, ResizeRequest, CirculateNotify,
		872	CirculateRequest, PropertyNotify, SelectionClear, SelectionRequest,
		873	SelectionNotify, ColormapNotify, ClientMessage, MappingNotify
		874
		875	Various constants for use in X calls and event processing.
		876
		877	=back
		878
		879	=head2 RENDITION
		880
		881	Rendition bitsets contain information about colour, font, font styles and
		882	similar information for each screen cell.
		883
		884	The following "macros" deal with changes in rendition sets. You should
		885	never just create a bitset, you should always modify an existing one,
		886	as they contain important information required for correct operation of
		887	rxvt-unicode.
		888
		889	=over 4
		890
		891	=item $rend = urxvt::DEFAULT_RSTYLE
		892
		893	Returns the default rendition, as used when the terminal is starting up or
		894	being reset. Useful as a base to start when creating renditions.
		895
		896	=item $rend = urxvt::OVERLAY_RSTYLE
		897
		898	Return the rendition mask used for overlays by default.
		899
		900	=item $rendbit = urxvt::RS_Bold, urxvt::RS_Italic, urxvt::RS_Blink,
		901	urxvt::RS_RVid, urxvt::RS_Uline
		902
		903	Return the bit that enabled bold, italic, blink, reverse-video and
		904	underline, respectively. To enable such a style, just logically OR it into
		905	the bitset.
		906
		907	=item $foreground = urxvt::GET_BASEFG $rend
		908
		909	=item $background = urxvt::GET_BASEBG $rend
		910
		911	Return the foreground/background colour index, respectively.
		912
		913	=item $rend = urxvt::SET_FGCOLOR $rend, $new_colour
		914
		915	=item $rend = urxvt::SET_BGCOLOR $rend, $new_colour
		916
		917	=item $rend = urxvt::SET_COLOR $rend, $new_fg, $new_bg
		918
		919	Replace the foreground/background colour in the rendition mask with the
		920	specified one.
		921
		922	=item $value = urxvt::GET_CUSTOM $rend
		923
		924	Return the "custom" value: Every rendition has 5 bits for use by
		925	extensions. They can be set and changed as you like and are initially
		926	zero.
		927
		928	=item $rend = urxvt::SET_CUSTOM $rend, $new_value
		929
		930	Change the custom value.
		931
		932	=back
		933
160	=cut	934	=cut
161		935
162	package urxvt;
163
164	use strict;
165
166	our $term;
167	our @HOOKNAME;
168	our $LIBDIR;
169
170	BEGIN {	936	BEGIN {
171	urxvt->bootstrap;
172
173	# overwrite perl's warn	937	# overwrite perl's warn
174	*CORE::GLOBAL::warn = sub {	938	*CORE::GLOBAL::warn = sub {
175	my $msg = join "", @_;	939	my $msg = join "", @_;
176	$msg .= "\n"	940	$msg .= "\n"
177	unless $msg =~ /\n$/;	941	unless $msg =~ /\n$/;
178	urxvt::warn ($msg);	942	urxvt::warn ($msg);
179	};	943	};
180	}	944	}
181		945
182	my @hook_count;	946	no warnings 'utf8';
		947
		948	sub parse_resource {
		949	my ($term, $name, $isarg, $longopt, $flag, $value) = @_;
		950
		951	$name =~ y/-/./ if $isarg;
		952
		953	$term->scan_meta;
		954
		955	my $r = $term->{meta}{resource};
		956	keys %$r; # reste iterator
		957	while (my ($pattern, $v) = each %$r) {
		958	if (
		959	$pattern =~ /\.$/
		960	? $pattern eq substr $name, 0, length $pattern
		961	: $pattern eq $name
		962	) {
		963	$name = "$urxvt::RESCLASS.$name";
		964
		965	push @{ $term->{perl_ext_3} }, $v->[0];
		966
		967	if ($v->[1] eq "boolean") {
		968	$term->put_option_db ($name, $flag ? "true" : "false");
		969	return 1;
		970	} else {
		971	$term->put_option_db ($name, $value);
		972	return 1 + 2;
		973	}
		974	}
		975	}
		976
		977	0
		978	}
		979
		980	sub usage {
		981	my ($term, $usage_type) = @_;
		982
		983	$term->scan_meta;
		984
		985	my $r = $term->{meta}{resource};
		986
		987	for my $pattern (sort keys %$r) {
		988	my ($ext, $type, $desc) = @{ $r->{$pattern} };
		989
		990	$desc .= " (-pe $ext)";
		991
		992	if ($usage_type == 1) {
		993	$pattern =~ y/./-/;
		994	$pattern =~ s/-$/-.../g;
		995
		996	if ($type eq "boolean") {
		997	urxvt::log sprintf " -%-30s %s\n", "/+$pattern", $desc;
		998	} else {
		999	urxvt::log sprintf " -%-30s %s\n", "$pattern $type", $desc;
		1000	}
		1001	} else {
		1002	$pattern =~ s/\.$/.*/g;
		1003	urxvt::log sprintf " %-31s %s\n", "$pattern:", $type;
		1004	}
		1005	}
		1006	}
		1007
183	my $verbosity = $ENV{URXVT_PERL_VERBOSITY};	1008	my $verbosity = $ENV{URXVT_PERL_VERBOSITY};
184		1009
185	sub verbose {	1010	sub verbose {
186	my ($level, $msg) = @_;	1011	my ($level, $msg) = @_;
187	warn "$msg\n" if $level <= $verbosity;	1012	warn "$msg\n" if $level <= $verbosity;
188	}	1013	}
189		1014
190	# find on_xxx subs in the package and register them	1015	my %extension_pkg;
191	# as hooks
192	sub register_package($) {
193	my ($pkg) = @_;
194
195	for my $htype (0.. $#HOOKNAME) {
196	my $name = $HOOKNAME[$htype];
197
198	my $ref = $pkg->can ("on_" . lc $name)
199	or next;
200
201	$term->{_hook}[$htype]{$ref*1} = $ref;
202	$hook_count[$htype]++
203	or set_should_invoke $htype, 1;
204	}
205	}
206
207	my $script_pkg = "script0000";
208	my %script_pkg;
209		1016
210	# load a single script into its own package, once only	1017	# load a single script into its own package, once only
211	sub script_package($) {	1018	sub extension_package($) {
212	my ($path) = @_;	1019	my ($path) = @_;
213		1020
214	$script_pkg{$path} ||= do {	1021	$extension_pkg{$path} ||= do {
215	my $pkg = "urxvt::" . ($script_pkg++);	1022	$path =~ /([^\/\\]+)$/;
		1023	my $pkg = $1;
		1024	$pkg =~ s/[^[:word:]]/_/g;
		1025	$pkg = "urxvt::ext::$pkg";
216		1026
217	verbose 3, "loading script '$path' into package '$pkg'";	1027	verbose 3, "loading extension '$path' into package '$pkg'";
		1028
		1029	(${"$pkg\::_NAME"} = $path) =~ s/^.*[\\\/]//; # hackish
218		1030
219	open my $fh, "<:raw", $path	1031	open my $fh, "<:raw", $path
220	or die "$path: $!";	1032	or die "$path: $!";
221		1033
222	my $source = "package $pkg; use strict; use utf8;\n"	1034	my $source =
		1035	"package $pkg; use strict 'vars'; use utf8; no warnings 'utf8';\n"
223	. "#line 1 \"$path\"\n{\n"	1036	. "#line 1 \"$path\"\n{\n"
224	. (do { local $/; <$fh> })	1037	. (do { local $/; <$fh> })
225	. "\n};\n1";	1038	. "\n};\n1";
226		1039
		1040	eval $source
227	eval $source or die "$path: $@";	1041	or die "$path: $@";
228		1042
229	$pkg	1043	$pkg
230	}	1044	}
231	}	1045	}
232		1046
		1047	our $retval; # return value for urxvt
		1048
233	# called by the rxvt core	1049	# called by the rxvt core
234	sub invoke {	1050	sub invoke {
235	local $term = shift;	1051	local $TERM = shift;
236	my $htype = shift;	1052	my $htype = shift;
237		1053
238	if ($htype == 0) { # INIT	1054	if ($htype == 0) { # INIT
239	my @dirs = ((split /:/, $term->resource ("perl_lib")), "$LIBDIR/perl");	1055	my @dirs = $TERM->perl_libdirs;
240		1056
241	for my $ext (split /:/, $term->resource ("perl_ext")) {	1057	my %ext_arg;
		1058
		1059	{
		1060	my @init = @TERM_INIT;
		1061	@TERM_INIT = ();
		1062	$_->($TERM) for @init;
		1063	my @pkg = @TERM_EXT;
		1064	@TERM_EXT = ();
		1065	$TERM->register_package ($_) for @pkg;
		1066	}
		1067
		1068	for (
		1069	@{ delete $TERM->{perl_ext_3} },
		1070	grep $_, map { split /,/, $TERM->resource ("perl_ext_$_") } 1, 2
		1071	) {
		1072	if ($_ eq "default") {
		1073	$ext_arg{$_} ||= [] for qw(selection option-popup selection-popup searchable-scrollback readline);
		1074	} elsif (/^-(.*)$/) {
		1075	delete $ext_arg{$1};
		1076	} elsif (/^([^<]+)<(.*)>$/) {
		1077	push @{ $ext_arg{$1} }, $2;
		1078	} else {
		1079	$ext_arg{$_} ||= [];
		1080	}
		1081	}
		1082
		1083	for my $ext (sort keys %ext_arg) {
242	my @files = grep -f $_, map "$_/$ext", @dirs;	1084	my @files = grep -f $_, map "$_/$ext", @dirs;
243		1085
244	if (@files) {	1086	if (@files) {
245	register_package script_package $files[0];	1087	$TERM->register_package (extension_package $files[0], $ext_arg{$ext});
246	} else {	1088	} else {
247	warn "perl extension '$ext' not found in perl library search path\n";	1089	warn "perl extension '$ext' not found in perl library search path\n";
248	}	1090	}
249	}	1091	}
250		1092
		1093	eval "#line 1 \"--perl-eval resource/argument\"\n" . $TERM->resource ("perl_eval");
		1094	warn $@ if $@;
		1095	}
		1096
		1097	$retval = undef;
		1098
		1099	if (my $cb = $TERM->{_hook}[$htype]) {
		1100	verbose 10, "$HOOKNAME[$htype] (" . (join ", ", $TERM, @_) . ")"
		1101	if $verbosity >= 10;
		1102
		1103	for my $pkg (keys %$cb) {
		1104	my $retval_ = eval { $cb->{$pkg}->($TERM->{_pkg}{$pkg}, @_) };
		1105	$retval ||= $retval_;
		1106
		1107	if ($@) {
		1108	$TERM->ungrab; # better to lose the grab than the session
		1109	warn $@;
		1110	}
		1111	}
		1112
		1113	verbose 11, "$HOOKNAME[$htype] returning <$retval>"
		1114	if $verbosity >= 11;
		1115	}
		1116
251	} elsif ($htype == 1) { # DESTROY	1117	if ($htype == 1) { # DESTROY
252	if (my $hook = $term->{_hook}) {	1118	# clear package objects
253	for my $htype (0..$#$hook) {	1119	%$_ = () for values %{ $TERM->{_pkg} };
254	$hook_count[$htype] -= scalar keys %{ $hook->[$htype] || {} }	1120
255	or set_should_invoke $htype, 0;	1121	# clear package
		1122	%$TERM = ();
		1123	}
		1124
		1125	$retval
		1126	}
		1127
		1128	sub SET_COLOR($$$) {
		1129	SET_BGCOLOR (SET_FGCOLOR ($_[0], $_[1]), $_[2])
		1130	}
		1131
		1132	sub rend2mask {
		1133	no strict 'refs';
		1134	my ($str, $mask) = (@_, 0);
		1135	my %color = ( fg => undef, bg => undef );
		1136	my @failed;
		1137	for my $spec ( split /\s+/, $str ) {
		1138	if ( $spec =~ /^([fb]g)[_:-]?(\d+)/i ) {
		1139	$color{lc($1)} = $2;
		1140	} else {
		1141	my $neg = $spec =~ s/^[-^]//;
		1142	unless ( exists &{"RS_$spec"} ) {
		1143	push @failed, $spec;
		1144	next;
		1145	}
		1146	my $cur = &{"RS_$spec"};
		1147	if ( $neg ) {
		1148	$mask &= ~$cur;
		1149	} else {
		1150	$mask |= $cur;
256	}	1151	}
257	}	1152	}
258	}	1153	}
		1154	($mask, @color{qw(fg bg)}, \@failed)
		1155	}
259		1156
260	my $cb = $term->{_hook}[$htype]	1157	package urxvt::term::extension;
261	or return;
262		1158
263	verbose 10, "$HOOKNAME[$htype] (" . (join ", ", $term, @_) . ")"	1159	sub enable {
264	if $verbosity >= 10;	1160	my ($self, %hook) = @_;
		1161	my $pkg = $self->{_pkg};
265		1162
266	while (my ($k, $v) = each %$cb) {	1163	while (my ($name, $cb) = each %hook) {
267	return 1 if $v->($term, @_);	1164	my $htype = $HOOKTYPE{uc $name};
		1165	defined $htype
		1166	or Carp::croak "unsupported hook type '$name'";
		1167
		1168	$self->set_should_invoke ($htype, +1)
		1169	unless exists $self->{term}{_hook}[$htype]{$pkg};
		1170
		1171	$self->{term}{_hook}[$htype]{$pkg} = $cb;
268	}	1172	}
		1173	}
269		1174
		1175	sub disable {
		1176	my ($self, @hook) = @_;
		1177	my $pkg = $self->{_pkg};
		1178
		1179	for my $name (@hook) {
		1180	my $htype = $HOOKTYPE{uc $name};
		1181	defined $htype
		1182	or Carp::croak "unsupported hook type '$name'";
		1183
		1184	$self->set_should_invoke ($htype, -1)
		1185	if delete $self->{term}{_hook}[$htype]{$pkg};
270	0	1186	}
271	}	1187	}
272		1188
273	=back	1189	our $AUTOLOAD;
		1190
		1191	sub AUTOLOAD {
		1192	$AUTOLOAD =~ /:([^:]+)$/
		1193	or die "FATAL: \$AUTOLOAD '$AUTOLOAD' unparsable";
		1194
		1195	eval qq{
		1196	sub $AUTOLOAD {
		1197	my \$proxy = shift;
		1198	\$proxy->{term}->$1 (\@_)
		1199	}
		1200	1
		1201	} or die "FATAL: unable to compile method forwarder: $@";
		1202
		1203	goto &$AUTOLOAD;
		1204	}
		1205
		1206	sub DESTROY {
		1207	# nop
		1208	}
		1209
		1210	# urxvt::destroy_hook
		1211
		1212	sub urxvt::destroy_hook::DESTROY {
		1213	${$_[0]}->();
		1214	}
		1215
		1216	sub urxvt::destroy_hook(&) {
		1217	bless \shift, urxvt::destroy_hook::
		1218	}
		1219
		1220	sub x_resource {
		1221	my ($self, $name) = @_;
		1222	$name =~ s/^%(\.|$)/$_[0]{_name}$1/;
		1223	$self->{term}->x_resource ($name)
		1224	}
		1225
		1226	sub x_resource_boolean {
		1227	my ($self, $name) = @_;
		1228	$name =~ s/^%(\.|$)/$_[0]{_name}$1/;
		1229	$self->{term}->x_resource_boolean ($name)
		1230	}
		1231
		1232	package urxvt::anyevent;
		1233
		1234	=head2 The C<urxvt::anyevent> Class
		1235
		1236	The sole purpose of this class is to deliver an interface to the
		1237	C<AnyEvent> module - any module using it will work inside urxvt without
		1238	further programming. The only exception is that you cannot wait on
		1239	condition variables, but non-blocking condvar use is ok.
		1240
		1241	In practical terms this means is that you cannot use blocking APIs, but
		1242	the non-blocking variant should work.
		1243
		1244	=cut
		1245
		1246	our $VERSION = '5.23';
		1247
		1248	$INC{"urxvt/anyevent.pm"} = 1; # mark us as there
		1249	push @AnyEvent::REGISTRY, [urxvt => urxvt::anyevent::];
		1250
		1251	sub timer {
		1252	my ($class, %arg) = @_;
		1253
		1254	my $cb = $arg{cb};
		1255
		1256	urxvt::timer
		1257	->new
		1258	->after ($arg{after}, $arg{interval})
		1259	->cb ($arg{interval} ? $cb : sub {
		1260	$_[0]->stop; # need to cancel manually
		1261	$cb->();
		1262	})
		1263	}
		1264
		1265	sub io {
		1266	my ($class, %arg) = @_;
		1267
		1268	my $cb = $arg{cb};
		1269	my $fd = fileno $arg{fh};
		1270	defined $fd or $fd = $arg{fh};
		1271
		1272	bless [$arg{fh}, urxvt::iow
		1273	->new
		1274	->fd ($fd)
		1275	->events (($arg{poll} =~ /r/ ? 1 : 0)
		1276	| ($arg{poll} =~ /w/ ? 2 : 0))
		1277	->start
		1278	->cb ($cb)
		1279	], urxvt::anyevent::
		1280	}
		1281
		1282	sub idle {
		1283	my ($class, %arg) = @_;
		1284
		1285	my $cb = $arg{cb};
		1286
		1287	urxvt::iw
		1288	->new
		1289	->start
		1290	->cb ($cb)
		1291	}
		1292
		1293	sub child {
		1294	my ($class, %arg) = @_;
		1295
		1296	my $cb = $arg{cb};
		1297
		1298	urxvt::pw
		1299	->new
		1300	->start ($arg{pid})
		1301	->cb (sub {
		1302	$_[0]->stop; # need to cancel manually
		1303	$cb->($_[0]->rpid, $_[0]->rstatus);
		1304	})
		1305	}
		1306
		1307	sub DESTROY {
		1308	$_[0][1]->stop;
		1309	}
		1310
		1311	# only needed for AnyEvent < 6 compatibility
		1312	sub one_event {
		1313	Carp::croak "AnyEvent->one_event blocking wait unsupported in urxvt, use a non-blocking API";
		1314	}
		1315
		1316	package urxvt::term;
274		1317
275	=head2 The C<urxvt::term> Class	1318	=head2 The C<urxvt::term> Class
276		1319
277	=over 4	1320	=over 4
		1321
		1322	=cut
		1323
		1324	# find on_xxx subs in the package and register them
		1325	# as hooks
		1326	sub register_package {
		1327	my ($self, $pkg, $argv) = @_;
		1328
		1329	no strict 'refs';
		1330
		1331	urxvt::verbose 6, "register package $pkg to $self";
		1332
		1333	@{"$pkg\::ISA"} = urxvt::term::extension::;
		1334
		1335	my $proxy = bless {
		1336	_pkg => $pkg,
		1337	_name => ${"$pkg\::_NAME"}, # hackish
		1338	argv => $argv,
		1339	}, $pkg;
		1340	Scalar::Util::weaken ($proxy->{term} = $self);
		1341
		1342	$self->{_pkg}{$pkg} = $proxy;
		1343
		1344	for my $name (@HOOKNAME) {
		1345	if (my $ref = $pkg->can ("on_" . lc $name)) {
		1346	$proxy->enable ($name => $ref);
		1347	}
		1348	}
		1349	}
		1350
		1351	sub perl_libdirs {
		1352	map { split /:/ }
		1353	$_[0]->resource ("perl_lib"),
		1354	$ENV{URXVT_PERL_LIB},
		1355	"$ENV{HOME}/.urxvt/ext",
		1356	"$LIBDIR/perl"
		1357	}
		1358
		1359	sub scan_meta {
		1360	my ($self) = @_;
		1361	my @libdirs = perl_libdirs $self;
		1362
		1363	return if $self->{meta_libdirs} eq join "\x00", @libdirs;
		1364
		1365	my %meta;
		1366
		1367	$self->{meta_libdirs} = join "\x00", @libdirs;
		1368	$self->{meta} = \%meta;
		1369
		1370	for my $dir (reverse @libdirs) {
		1371	opendir my $fh, $dir
		1372	or next;
		1373	for my $ext (readdir $fh) {
		1374	$ext ne "."
		1375	and $ext ne ".."
		1376	and open my $fh, "<", "$dir/$ext"
		1377	or next;
		1378
		1379	while (<$fh>) {
		1380	if (/^#:META:X_RESOURCE:(.*)/) {
		1381	my ($pattern, $type, $desc) = split /:/, $1;
		1382	$pattern =~ s/^%(\.|$)/$ext$1/g; # % in pattern == extension name
		1383	if ($pattern =~ /[^a-zA-Z0-9\-\.]/) {
		1384	warn "$dir/$ext: meta resource '$pattern' contains illegal characters (not alphanumeric nor . nor *)\n";
		1385	} else {
		1386	$meta{resource}{$pattern} = [$ext, $type, $desc];
		1387	}
		1388	} elsif (/^\s*(?:#|$)/) {
		1389	# skip other comments and empty lines
		1390	} else {
		1391	last; # stop parsing on first non-empty non-comment line
		1392	}
		1393	}
		1394	}
		1395	}
		1396	}
		1397
		1398	=item $term = new urxvt::term $envhashref, $rxvtname, [arg...]
		1399
		1400	Creates a new terminal, very similar as if you had started it with system
		1401	C<$rxvtname, arg...>. C<$envhashref> must be a reference to a C<%ENV>-like
		1402	hash which defines the environment of the new terminal.
		1403
		1404	Croaks (and probably outputs an error message) if the new instance
		1405	couldn't be created. Returns C<undef> if the new instance didn't
		1406	initialise perl, and the terminal object otherwise. The C<init> and
		1407	C<start> hooks will be called before this call returns, and are free to
		1408	refer to global data (which is race free).
		1409
		1410	=cut
		1411
		1412	sub new {
		1413	my ($class, $env, @args) = @_;
		1414
		1415	$env or Carp::croak "environment hash missing in call to urxvt::term->new";
		1416	@args or Carp::croak "name argument missing in call to urxvt::term->new";
		1417
		1418	_new ([ map "$_=$env->{$_}", keys %$env ], \@args);
		1419	}
		1420
		1421	=item $term->destroy
		1422
		1423	Destroy the terminal object (close the window, free resources
		1424	etc.). Please note that @@RXVT_NAME@@ will not exit as long as any event
		1425	watchers (timers, io watchers) are still active.
		1426
		1427	=item $term->exec_async ($cmd[, @args])
		1428
		1429	Works like the combination of the C<fork>/C<exec> builtins, which executes
		1430	("starts") programs in the background. This function takes care of setting
		1431	the user environment before exec'ing the command (e.g. C<PATH>) and should
		1432	be preferred over explicit calls to C<exec> or C<system>.
		1433
		1434	Returns the pid of the subprocess or C<undef> on error.
		1435
		1436	=cut
		1437
		1438	sub exec_async {
		1439	my $self = shift;
		1440
		1441	my $pid = fork;
		1442
		1443	return $pid
		1444	if !defined $pid or $pid;
		1445
		1446	%ENV = %{ $self->env };
		1447
		1448	exec @_;
		1449	urxvt::_exit 255;
		1450	}
		1451
		1452	=item $isset = $term->option ($optval[, $set])
		1453
		1454	Returns true if the option specified by C<$optval> is enabled, and
		1455	optionally change it. All option values are stored by name in the hash
		1456	C<%urxvt::OPTION>. Options not enabled in this binary are not in the hash.
		1457
		1458	Here is a likely non-exhaustive list of option names, please see the
		1459	source file F</src/optinc.h> to see the actual list:
		1460
		1461	borderLess buffered console cursorBlink cursorUnderline hold iconic
		1462	insecure intensityStyles iso14755 iso14755_52 jumpScroll loginShell
		1463	mapAlert meta8 mouseWheelScrollPage override_redirect pastableTabs
		1464	pointerBlank reverseVideo scrollBar scrollBar_floating scrollBar_right
		1465	scrollTtyKeypress scrollTtyOutput scrollWithBuffer secondaryScreen
		1466	secondaryScroll skipBuiltinGlyphs skipScroll transparent tripleclickwords
		1467	urgentOnBell utmpInhibit visualBell
278		1468
279	=item $value = $term->resource ($name[, $newval])	1469	=item $value = $term->resource ($name[, $newval])
280		1470
281	Returns the current resource value associated with a given name and	1471	Returns the current resource value associated with a given name and
282	optionally sets a new value. Setting values is most useful in the C<init>	1472	optionally sets a new value. Setting values is most useful in the C<init>
…		…
291	likely change).	1481	likely change).
292		1482
293	Please note that resource strings will currently only be freed when the	1483	Please note that resource strings will currently only be freed when the
294	terminal is destroyed, so changing options frequently will eat memory.	1484	terminal is destroyed, so changing options frequently will eat memory.
295		1485
296	Here is a a likely non-exhaustive list of resource names, not all of which	1486	Here is a likely non-exhaustive list of resource names, not all of which
297	are supported in every build, please see the source to see the actual	1487	are supported in every build, please see the source file F</src/rsinc.h>
298	list:	1488	to see the actual list:
299		1489
300	answerbackstring backgroundPixmap backspace_key boldFont boldItalicFont	1490	answerbackstring backgroundPixmap backspace_key blendtype blurradius
301	borderLess color cursorBlink cursorUnderline cutchars delete_key	1491	boldFont boldItalicFont borderLess buffered chdir color cursorBlink
302	display_name embed ext_bwidth fade font geometry hold iconName	1492	cursorUnderline cutchars delete_key depth display_name embed ext_bwidth
303	imFont imLocale inputMethod insecure int_bwidth intensityStyles	1493	fade font geometry hold iconName iconfile imFont imLocale inputMethod
		1494	insecure int_bwidth intensityStyles iso14755 iso14755_52 italicFont
304	italicFont jumpScroll lineSpace loginShell mapAlert menu meta8 modifier	1495	jumpScroll letterSpace lineSpace loginShell mapAlert meta8 modifier
305	mouseWheelScrollPage name pastableTabs path perl_eval perl_ext	1496	mouseWheelScrollPage name override_redirect pastableTabs path perl_eval
306	perl_lib pointerBlank pointerBlankDelay preeditType print_pipe pty_fd	1497	perl_ext_1 perl_ext_2 perl_lib pointerBlank pointerBlankDelay
307	reverseVideo saveLines scrollBar scrollBar_align scrollBar_floating	1498	preeditType print_pipe pty_fd reverseVideo saveLines scrollBar
308	scrollBar_right scrollBar_thickness scrollTtyKeypress scrollTtyOutput	1499	scrollBar_align scrollBar_floating scrollBar_right scrollBar_thickness
309	scrollWithBuffer scrollstyle secondaryScreen secondaryScroll selectstyle	1500	scrollTtyKeypress scrollTtyOutput scrollWithBuffer scrollstyle
310	shade term_name title transparent transparent_all tripleclickwords	1501	secondaryScreen secondaryScroll shade skipBuiltinGlyphs skipScroll
		1502	term_name title transient_for transparent tripleclickwords urgentOnBell
311	utmpInhibit visualBell	1503	utmpInhibit visualBell
312		1504
313	=cut	1505	=cut
314		1506
315	sub urxvt::term::resource($$;$) {	1507	sub resource($$;$) {
316	my ($self, $name) = (shift, shift);	1508	my ($self, $name) = (shift, shift);
317	unshift @_, $self, $name, ($name =~ s/\s*\+\s*(\d+)$// ? $1 : 0);	1509	unshift @_, $self, $name, ($name =~ s/\s*\+\s*(\d+)$// ? $1 : 0);
318	goto &urxvt::term::_resource;	1510	goto &urxvt::term::_resource
319	}	1511	}
		1512
		1513	=item $value = $term->x_resource ($pattern)
		1514
		1515	Returns the X-Resource for the given pattern, excluding the program or
		1516	class name, i.e. C<< $term->x_resource ("boldFont") >> should return the
		1517	same value as used by this instance of rxvt-unicode. Returns C<undef> if no
		1518	resource with that pattern exists.
		1519
		1520	Extensions that define extra resource or command line arguments also need
		1521	to call this method to access their values.
		1522
		1523	If the method is called on an extension object (basically, from an
		1524	extension), then the special prefix C<%.> will be replaced by the name of
		1525	the extension and a dot, and the lone string C<%> will be replcaed by the
		1526	extension name itself. This makes it possible to code extensions so you
		1527	can rename them and get a new set of commandline switches and resources
		1528	without having to change the actual code.
		1529
		1530	This method should only be called during the C<on_start> hook, as there is
		1531	only one resource database per display, and later invocations might return
		1532	the wrong resources.
		1533
		1534	=item $value = $term->x_resource_boolean ($pattern)
		1535
		1536	Like C<x_resource>, above, but interprets the string value as a boolean
		1537	and returns C<1> for true values, C<0> for false values and C<undef> if
		1538	the resource or option isn't specified.
		1539
		1540	You should always use this method to parse boolean resources.
		1541
		1542	=cut
		1543
		1544	sub x_resource_boolean {
		1545	my $res = &x_resource;
		1546
		1547	$res =~ /^\s*(?:true|yes|on|1)\s*$/i ? 1 : defined $res && 0
		1548	}
		1549
		1550	=item $success = $term->parse_keysym ($key, $octets)
		1551
		1552	Adds a key binding exactly as specified via a resource. See the
		1553	C<keysym> resource in the @@RXVT_NAME@@(1) manpage.
		1554
		1555	=item $term->register_command ($keysym, $modifiermask, $string)
		1556
		1557	Adds a key binding. This is a lower level api compared to
		1558	C<parse_keysym>, as it expects a parsed key description, and can be
		1559	used only inside either the C<on_init> hook, to add a binding, or the
		1560	C<on_register_command> hook, to modify a parsed binding.
		1561
		1562	=item $rend = $term->rstyle ([$new_rstyle])
		1563
		1564	Return and optionally change the current rendition. Text that is output by
		1565	the terminal application will use this style.
		1566
		1567	=item ($row, $col) = $term->screen_cur ([$row, $col])
		1568
		1569	Return the current coordinates of the text cursor position and optionally
		1570	set it (which is usually bad as applications don't expect that).
320		1571
321	=item ($row, $col) = $term->selection_mark ([$row, $col])	1572	=item ($row, $col) = $term->selection_mark ([$row, $col])
322		1573
323	=item ($row, $col) = $term->selection_beg ([$row, $col])	1574	=item ($row, $col) = $term->selection_beg ([$row, $col])
324		1575
325	=item ($row, $col) = $term->selection_end ([$row, $col])	1576	=item ($row, $col) = $term->selection_end ([$row, $col])
326		1577
327	Return the current values of the selection mark, begin or end positions,	1578	Return the current values of the selection mark, begin or end positions.
328	and optionally set them to new values.
329		1579
		1580	When arguments are given, then the selection coordinates are set to
		1581	C<$row> and C<$col>, and the selection screen is set to the current
		1582	screen.
		1583
		1584	=item $screen = $term->selection_screen ([$screen])
		1585
		1586	Returns the current selection screen, and then optionally sets it.
		1587
		1588	=item $term->selection_make ($eventtime[, $rectangular])
		1589
		1590	Tries to make a selection as set by C<selection_beg> and
		1591	C<selection_end>. If C<$rectangular> is true (default: false), a
		1592	rectangular selection will be made. This is the preferred function to make
		1593	a selection.
		1594
330	=item $success = $term->selection_grab ($eventtime)	1595	=item $success = $term->selection_grab ($eventtime[, $clipboard])
331		1596
332	Try to request the primary selection from the server (for example, as set	1597	Try to acquire ownership of the primary (clipboard if C<$clipboard> is
333	by the next method).	1598	true) selection from the server. The corresponding text can be set
		1599	with the next method. No visual feedback will be given. This function
		1600	is mostly useful from within C<on_sel_grab> hooks.
334		1601
335	=item $oldtext = $term->selection ([$newtext])	1602	=item $oldtext = $term->selection ([$newtext, $clipboard])
336		1603
337	Return the current selection text and optionally replace it by C<$newtext>.	1604	Return the current selection (clipboard if C<$clipboard> is true) text
		1605	and optionally replace it by C<$newtext>.
338		1606
		1607	=item $term->selection_clear ([$clipboard])
		1608
		1609	Revoke ownership of the primary (clipboard if C<$clipboard> is true) selection.
		1610
339	=item $term->scr_overlay ($x, $y, $text)	1611	=item $term->overlay_simple ($x, $y, $text)
340		1612
341	Create a simple multi-line overlay box. See the next method for details.	1613	Create a simple multi-line overlay box. See the next method for details.
342		1614
343	=cut	1615	=cut
344		1616
345	sub urxvt::term::scr_overlay {	1617	sub overlay_simple {
346	my ($self, $x, $y, $text) = @_;	1618	my ($self, $x, $y, $text) = @_;
347		1619
348	my @lines = split /\n/, $text;	1620	my @lines = split /\n/, $text;
349		1621
350	my $w = 0;	1622	my $w = List::Util::max map $self->strwidth ($_), @lines;
351	for (map $self->strwidth ($_), @lines) {
352	$w = $_ if $w < $_;
353	}
354		1623
355	$self->scr_overlay_new ($x, $y, $w, scalar @lines);	1624	my $overlay = $self->overlay ($x, $y, $w, scalar @lines);
356	$self->scr_overlay_set (0, $_, $lines[$_]) for 0.. $#lines;	1625	$overlay->set (0, $_, $lines[$_]) for 0.. $#lines;
357	}
358		1626
		1627	$overlay
		1628	}
		1629
359	=item $term->scr_overlay_new ($x, $y, $width, $height)	1630	=item $term->overlay ($x, $y, $width, $height[, $rstyle[, $border]])
360		1631
361	Create a new (empty) overlay at the given position with the given	1632	Create a new (empty) overlay at the given position with the given
362	width/height. A border will be put around the box. If either C<$x> or	1633	width/height. C<$rstyle> defines the initial rendition style
363	C<$y> is negative, then this is counted from the right/bottom side,	1634	(default: C<OVERLAY_RSTYLE>).
364	respectively.
365		1635
366	=item $term->scr_overlay_off	1636	If C<$border> is C<2> (default), then a decorative border will be put
		1637	around the box.
367		1638
368	Switch the overlay off again.	1639	If either C<$x> or C<$y> is negative, then this is counted from the
		1640	right/bottom side, respectively.
369		1641
370	=item $term->scr_overlay_set_char ($x, $y, $char, $rend = OVERLAY_RSTYLE)	1642	This method returns an urxvt::overlay object. The overlay will be visible
		1643	as long as the perl object is referenced.
371		1644
372	Put a single character (specified numerically) at the given overlay	1645	The methods currently supported on C<urxvt::overlay> objects are:
373	position.
374		1646
		1647	=over 4
		1648
375	=item $term->scr_overlay_set ($x, $y, $text)	1649	=item $overlay->set ($x, $y, $text[, $rend])
376		1650
377	Write a string at the given position into the overlay.	1651	Similar to C<< $term->ROW_t >> and C<< $term->ROW_r >> in that it puts
		1652	text in rxvt-unicode's special encoding and an array of rendition values
		1653	at a specific position inside the overlay.
378		1654
		1655	If C<$rend> is missing, then the rendition will not be changed.
		1656
		1657	=item $overlay->hide
		1658
		1659	If visible, hide the overlay, but do not destroy it.
		1660
		1661	=item $overlay->show
		1662
		1663	If hidden, display the overlay again.
		1664
		1665	=back
		1666
		1667	=item $popup = $term->popup ($event)
		1668
		1669	Creates a new C<urxvt::popup> object that implements a popup menu. The
		1670	C<$event> I<must> be the event causing the menu to pop up (a button event,
		1671	currently).
		1672
		1673	=cut
		1674
		1675	sub popup {
		1676	my ($self, $event) = @_;
		1677
		1678	$self->grab ($event->{time}, 1)
		1679	or return;
		1680
		1681	my $popup = bless {
		1682	term => $self,
		1683	event => $event,
		1684	}, urxvt::popup::;
		1685
		1686	Scalar::Util::weaken $popup->{term};
		1687
		1688	$self->{_destroy}{$popup} = urxvt::destroy_hook { $popup->{popup}->destroy };
		1689	Scalar::Util::weaken $self->{_destroy}{$popup};
		1690
		1691	$popup
		1692	}
		1693
379	=item $cellwidth = $term->strwidth $string	1694	=item $cellwidth = $term->strwidth ($string)
380		1695
381	Returns the number of screen-cells this string would need. Correctly	1696	Returns the number of screen-cells this string would need. Correctly
382	accounts for wide and combining characters.	1697	accounts for wide and combining characters.
383		1698
384	=item $octets = $term->locale_encode $string	1699	=item $octets = $term->locale_encode ($string)
385		1700
386	Convert the given text string into the corresponding locale encoding.	1701	Convert the given text string into the corresponding locale encoding.
387		1702
388	=item $string = $term->locale_decode $octets	1703	=item $string = $term->locale_decode ($octets)
389		1704
390	Convert the given locale-encoded octets into a perl string.	1705	Convert the given locale-encoded octets into a perl string.
391		1706
		1707	=item $term->scr_xor_span ($beg_row, $beg_col, $end_row, $end_col[, $rstyle])
		1708
		1709	XORs the rendition values in the given span with the provided value
		1710	(default: C<RS_RVid>), which I<MUST NOT> contain font styles. Useful in
		1711	refresh hooks to provide effects similar to the selection.
		1712
		1713	=item $term->scr_xor_rect ($beg_row, $beg_col, $end_row, $end_col[, $rstyle1[, $rstyle2]])
		1714
		1715	Similar to C<scr_xor_span>, but xors a rectangle instead. Trailing
		1716	whitespace will additionally be xored with the C<$rstyle2>, which defaults
		1717	to C<RS_RVid | RS_Uline>, which removes reverse video again and underlines
		1718	it instead. Both styles I<MUST NOT> contain font styles.
		1719
		1720	=item $term->scr_bell
		1721
		1722	Ring the bell!
		1723
		1724	=item $term->scr_add_lines ($string)
		1725
		1726	Write the given text string to the screen, as if output by the application
		1727	running inside the terminal. It may not contain command sequences (escape
		1728	codes), but is free to use line feeds, carriage returns and tabs. The
		1729	string is a normal text string, not in locale-dependent encoding.
		1730
		1731	Normally its not a good idea to use this function, as programs might be
		1732	confused by changes in cursor position or scrolling. Its useful inside a
		1733	C<on_add_lines> hook, though.
		1734
		1735	=item $term->scr_change_screen ($screen)
		1736
		1737	Switch to given screen - 0 primary, 1 secondary.
		1738
		1739	=item $term->cmd_parse ($octets)
		1740
		1741	Similar to C<scr_add_lines>, but the argument must be in the
		1742	locale-specific encoding of the terminal and can contain command sequences
		1743	(escape codes) that will be interpreted.
		1744
392	=item $term->tt_write ($octets)	1745	=item $term->tt_write ($octets)
393		1746
394	Write the octets given in C<$data> to the tty (i.e. as program input). To	1747	Write the octets given in C<$octets> to the tty (i.e. as program input). To
395	pass characters instead of octets, you should convert your strings first	1748	pass characters instead of octets, you should convert your strings first
396	to the locale-specific encoding using C<< $term->locale_encode >>.	1749	to the locale-specific encoding using C<< $term->locale_encode >>.
397		1750
		1751	=item $term->tt_paste ($octets)
		1752
		1753	Write the octets given in C<$octets> to the tty as a paste, converting NL to
		1754	CR and bracketing the data with control sequences if bracketed paste mode
		1755	is set.
		1756
		1757	=item $old_events = $term->pty_ev_events ([$new_events])
		1758
		1759	Replaces the event mask of the pty watcher by the given event mask. Can
		1760	be used to suppress input and output handling to the pty/tty. See the
		1761	description of C<< urxvt::timer->events >>. Make sure to always restore
		1762	the previous value.
		1763
		1764	=item $fd = $term->pty_fd
		1765
		1766	Returns the master file descriptor for the pty in use, or C<-1> if no pty
		1767	is used.
		1768
		1769	=item $windowid = $term->parent
		1770
		1771	Return the window id of the toplevel window.
		1772
		1773	=item $windowid = $term->vt
		1774
		1775	Return the window id of the terminal window.
		1776
		1777	=item $term->vt_emask_add ($x_event_mask)
		1778
		1779	Adds the specified events to the vt event mask. Useful e.g. when you want
		1780	to receive pointer events all the times:
		1781
		1782	$term->vt_emask_add (urxvt::PointerMotionMask);
		1783
		1784	=item $term->set_urgency ($set)
		1785
		1786	Enable/disable the urgency hint on the toplevel window.
		1787
		1788	=item $term->focus_in
		1789
		1790	=item $term->focus_out
		1791
		1792	=item $term->key_press ($state, $keycode[, $time])
		1793
		1794	=item $term->key_release ($state, $keycode[, $time])
		1795
		1796	Deliver various fake events to to terminal.
		1797
		1798	=item $window_width = $term->width
		1799
		1800	=item $window_height = $term->height
		1801
		1802	=item $font_width = $term->fwidth
		1803
		1804	=item $font_height = $term->fheight
		1805
		1806	=item $font_ascent = $term->fbase
		1807
		1808	=item $terminal_rows = $term->nrow
		1809
		1810	=item $terminal_columns = $term->ncol
		1811
		1812	=item $has_focus = $term->focus
		1813
		1814	=item $is_mapped = $term->mapped
		1815
		1816	=item $max_scrollback = $term->saveLines
		1817
		1818	=item $nrow_plus_saveLines = $term->total_rows
		1819
		1820	=item $topmost_scrollback_row = $term->top_row
		1821
		1822	Return various integers describing terminal characteristics.
		1823
		1824	=item $x_display = $term->display_id
		1825
		1826	Return the DISPLAY used by rxvt-unicode.
		1827
		1828	=item $lc_ctype = $term->locale
		1829
		1830	Returns the LC_CTYPE category string used by this rxvt-unicode.
		1831
398	=item $nsaved = $term->nsaved	1832	=item $env = $term->env
399		1833
400	Returns the number of lines in the scrollback buffer.	1834	Returns a copy of the environment in effect for the terminal as a hashref
		1835	similar to C<\%ENV>.
		1836
		1837	=item @envv = $term->envv
		1838
		1839	Returns the environment as array of strings of the form C<VAR=VALUE>.
		1840
		1841	=item @argv = $term->argv
		1842
		1843	Return the argument vector as this terminal, similar to @ARGV, but
		1844	includes the program name as first element.
		1845
		1846	=cut
		1847
		1848	sub env {
		1849	+{ map /^([^=]+)(?:=(.*))?$/s && ($1 => $2), $_[0]->envv }
		1850	}
		1851
		1852	=item $modifiermask = $term->ModLevel3Mask
		1853
		1854	=item $modifiermask = $term->ModMetaMask
		1855
		1856	=item $modifiermask = $term->ModNumLockMask
		1857
		1858	Return the modifier masks corresponding to the "ISO Level 3 Shift" (often
		1859	AltGr), the meta key (often Alt) and the num lock key, if applicable.
		1860
		1861	=item $screen = $term->current_screen
		1862
		1863	Returns the currently displayed screen (0 primary, 1 secondary).
		1864
		1865	=item $cursor_is_hidden = $term->hidden_cursor
		1866
		1867	Returns whether the cursor is currently hidden or not.
401		1868
402	=item $view_start = $term->view_start ([$newvalue])	1869	=item $view_start = $term->view_start ([$newvalue])
403		1870
404	Returns the negative row number of the topmost line. Minimum value is	1871	Returns the row number of the topmost displayed line. Maximum value is
405	C<0>, which displays the normal terminal contents. Larger values scroll	1872	C<0>, which displays the normal terminal contents. Lower values scroll
406	this many lines into the scrollback buffer.	1873	this many lines into the scrollback buffer.
407		1874
		1875	=item $term->want_refresh
		1876
		1877	Requests a screen refresh. At the next opportunity, rxvt-unicode will
		1878	compare the on-screen display with its stored representation. If they
		1879	differ, it redraws the differences.
		1880
		1881	Used after changing terminal contents to display them.
		1882
408	=item $text = $term->ROW_t ($row_number[, $new_text])	1883	=item $text = $term->ROW_t ($row_number[, $new_text[, $start_col]])
409		1884
410	Returns the text of the entire row with number C<$row_number>. Row C<0>	1885	Returns the text of the entire row with number C<$row_number>. Row C<< $term->top_row >>
411	is the topmost terminal line, row C<< $term->$ncol-1 >> is the bottommost	1886	is the topmost terminal line, row C<< $term->nrow-1 >> is the bottommost
412	terminal line. The scrollback buffer starts at line C<-1> and extends to	1887	terminal line. Nothing will be returned if a nonexistent line
413	line C<< -$term->nsaved >>.	1888	is requested.
414		1889
415	If C<$new_text> is specified, it will completely replace the current line.	1890	If C<$new_text> is specified, it will replace characters in the current
		1891	line, starting at column C<$start_col> (default C<0>), which is useful
		1892	to replace only parts of a line. The font index in the rendition will
		1893	automatically be updated.
416		1894
417	C<$text> is in a special encoding: tabs and wide characters that use more	1895	C<$text> is in a special encoding: tabs and wide characters that use more
418	than one cell when displayed are padded with urxvt::NOCHAR characters	1896	than one cell when displayed are padded with C<$urxvt::NOCHAR> (chr 65535)
419	(C<chr 65535>). Characters with combining characters and other characters	1897	characters. Characters with combining characters and other characters that
420	that do not fit into the normal tetx encoding will be replaced with	1898	do not fit into the normal text encoding will be replaced with characters
421	characters in the private use area.	1899	in the private use area.
422		1900
423	You have to obey this encoding when changing text. The advantage is	1901	You have to obey this encoding when changing text. The advantage is
424	that C<substr> and similar functions work on screen cells and not on	1902	that C<substr> and similar functions work on screen cells and not on
425	characters.	1903	characters.
426		1904
427	The methods C<< $term->special_encode >> and C<< $term->special_decode >>	1905	The methods C<< $term->special_encode >> and C<< $term->special_decode >>
428	can be used to convert normal strings into this encoding and vice versa.	1906	can be used to convert normal strings into this encoding and vice versa.
429		1907
430	=item $rend = $term->ROW_r ($row_number[, $new_rend])	1908	=item $rend = $term->ROW_r ($row_number[, $new_rend[, $start_col]])
431		1909
432	Like C<< $term->ROW_t >>	1910	Like C<< $term->ROW_t >>, but returns an arrayref with rendition
		1911	bitsets. Rendition bitsets contain information about colour, font, font
		1912	styles and similar information. See also C<< $term->ROW_t >>.
		1913
		1914	When setting rendition, the font mask will be ignored.
		1915
		1916	See the section on RENDITION, above.
		1917
		1918	=item $length = $term->ROW_l ($row_number[, $new_length])
		1919
		1920	Returns the number of screen cells that are in use ("the line
		1921	length"). Unlike the urxvt core, this returns C<< $term->ncol >> if the
		1922	line is joined with the following one.
		1923
		1924	=item $bool = $term->is_longer ($row_number)
		1925
		1926	Returns true if the row is part of a multiple-row logical "line" (i.e.
		1927	joined with the following row), which means all characters are in use
		1928	and it is continued on the next row (and possibly a continuation of the
		1929	previous row(s)).
		1930
		1931	=item $line = $term->line ($row_number)
		1932
		1933	Create and return a new C<urxvt::line> object that stores information
		1934	about the logical line that row C<$row_number> is part of. It supports the
		1935	following methods:
		1936
		1937	=over 4
		1938
		1939	=item $text = $line->t ([$new_text])
		1940
		1941	Returns or replaces the full text of the line, similar to C<ROW_t>
		1942
		1943	=item $rend = $line->r ([$new_rend])
		1944
		1945	Returns or replaces the full rendition array of the line, similar to C<ROW_r>
		1946
		1947	=item $length = $line->l
		1948
		1949	Returns the length of the line in cells, similar to C<ROW_l>.
		1950
		1951	=item $rownum = $line->beg
		1952
		1953	=item $rownum = $line->end
		1954
		1955	Return the row number of the first/last row of the line, respectively.
		1956
		1957	=item $offset = $line->offset_of ($row, $col)
		1958
		1959	Returns the character offset of the given row|col pair within the logical
		1960	line. Works for rows outside the line, too, and returns corresponding
		1961	offsets outside the string.
		1962
		1963	=item ($row, $col) = $line->coord_of ($offset)
		1964
		1965	Translates a string offset into terminal coordinates again.
		1966
		1967	=back
		1968
		1969	=cut
		1970
		1971	sub line {
		1972	my ($self, $row) = @_;
		1973
		1974	my $maxrow = $self->nrow - 1;
		1975
		1976	my ($beg, $end) = ($row, $row);
		1977
		1978	--$beg while $self->ROW_is_longer ($beg - 1);
		1979	++$end while $self->ROW_is_longer ($end) && $end < $maxrow;
		1980
		1981	bless {
		1982	term => $self,
		1983	beg => $beg,
		1984	end => $end,
		1985	ncol => $self->ncol,
		1986	len => ($end - $beg) * $self->ncol + $self->ROW_l ($end),
		1987	}, urxvt::line::
		1988	}
		1989
		1990	sub urxvt::line::t {
		1991	my ($self) = @_;
		1992
		1993	if (@_ > 1)
		1994	{
		1995	$self->{term}->ROW_t ($_, $_[1], 0, ($_ - $self->{beg}) * $self->{ncol}, $self->{ncol})
		1996	for $self->{beg} .. $self->{end};
		1997	}
		1998
		1999	defined wantarray &&
		2000	substr +(join "", map $self->{term}->ROW_t ($_), $self->{beg} .. $self->{end}),
		2001	0, $self->{len}
		2002	}
		2003
		2004	sub urxvt::line::r {
		2005	my ($self) = @_;
		2006
		2007	if (@_ > 1)
		2008	{
		2009	$self->{term}->ROW_r ($_, $_[1], 0, ($_ - $self->{beg}) * $self->{ncol}, $self->{ncol})
		2010	for $self->{beg} .. $self->{end};
		2011	}
		2012
		2013	if (defined wantarray) {
		2014	my $rend = [
		2015	map @{ $self->{term}->ROW_r ($_) }, $self->{beg} .. $self->{end}
		2016	];
		2017	$#$rend = $self->{len} - 1;
		2018	return $rend;
		2019	}
		2020
		2021	()
		2022	}
		2023
		2024	sub urxvt::line::beg { $_[0]{beg} }
		2025	sub urxvt::line::end { $_[0]{end} }
		2026	sub urxvt::line::l { $_[0]{len} }
		2027
		2028	sub urxvt::line::offset_of {
		2029	my ($self, $row, $col) = @_;
		2030
		2031	($row - $self->{beg}) * $self->{ncol} + $col
		2032	}
		2033
		2034	sub urxvt::line::coord_of {
		2035	my ($self, $offset) = @_;
		2036
		2037	use integer;
		2038
		2039	(
		2040	$offset / $self->{ncol} + $self->{beg},
		2041	$offset % $self->{ncol}
		2042	)
		2043	}
433		2044
434	=item $text = $term->special_encode $string	2045	=item $text = $term->special_encode $string
435		2046
436	Converts a perl string into the special encoding used by rxvt-unicode,	2047	Converts a perl string into the special encoding used by rxvt-unicode,
437	where one character corresponds to one screen cell. See	2048	where one character corresponds to one screen cell. See
438	C<< $term->ROW_t >> for details.	2049	C<< $term->ROW_t >> for details.
439		2050
440	=item $string = $term->special_decode $text	2051	=item $string = $term->special_decode $text
441		2052
442	Converts rxvt-unicodes text reprsentation into a perl string. See	2053	Converts rxvt-unicodes text representation into a perl string. See
443	C<< $term->ROW_t >> for details.	2054	C<< $term->ROW_t >> for details.
444		2055
		2056	=item $success = $term->grab_button ($button, $modifiermask[, $window = $term->vt])
		2057
		2058	=item $term->ungrab_button ($button, $modifiermask[, $window = $term->vt])
		2059
		2060	Register/unregister a synchronous button grab. See the XGrabButton
		2061	manpage.
		2062
		2063	=item $success = $term->grab ($eventtime[, $sync])
		2064
		2065	Calls XGrabPointer and XGrabKeyboard in asynchronous (default) or
		2066	synchronous (C<$sync> is true). Also remembers the grab timestamp.
		2067
		2068	=item $term->allow_events_async
		2069
		2070	Calls XAllowEvents with AsyncBoth for the most recent grab.
		2071
		2072	=item $term->allow_events_sync
		2073
		2074	Calls XAllowEvents with SyncBoth for the most recent grab.
		2075
		2076	=item $term->allow_events_replay
		2077
		2078	Calls XAllowEvents with both ReplayPointer and ReplayKeyboard for the most
		2079	recent grab.
		2080
		2081	=item $term->ungrab
		2082
		2083	Calls XUngrabPointer and XUngrabKeyboard for the most recent grab. Is called automatically on
		2084	evaluation errors, as it is better to lose the grab in the error case as
		2085	the session.
		2086
		2087	=item $atom = $term->XInternAtom ($atom_name[, $only_if_exists])
		2088
		2089	=item $atom_name = $term->XGetAtomName ($atom)
		2090
		2091	=item @atoms = $term->XListProperties ($window)
		2092
		2093	=item ($type,$format,$octets) = $term->XGetWindowProperty ($window, $property)
		2094
		2095	=item $term->XChangeProperty ($window, $property, $type, $format, $octets)
		2096
		2097	=item $term->XDeleteProperty ($window, $property)
		2098
		2099	=item $window = $term->DefaultRootWindow
		2100
		2101	=item $term->XReparentWindow ($window, $parent, [$x, $y])
		2102
		2103	=item $term->XMapWindow ($window)
		2104
		2105	=item $term->XUnmapWindow ($window)
		2106
		2107	=item $term->XMoveResizeWindow ($window, $x, $y, $width, $height)
		2108
		2109	=item ($x, $y, $child_window) = $term->XTranslateCoordinates ($src, $dst, $x, $y)
		2110
		2111	=item $term->XChangeInput ($window, $add_events[, $del_events])
		2112
		2113	=item $keysym = $term->XStringToKeysym ($string)
		2114
		2115	=item $string = $term->XKeysymToString ($keysym)
		2116
		2117	Various X or X-related functions. The C<$term> object only serves as
		2118	the source of the display, otherwise those functions map more-or-less
		2119	directly onto the X functions of the same name.
		2120
445	=back	2121	=back
		2122
		2123	=cut
		2124
		2125	package urxvt::popup;
		2126
		2127	=head2 The C<urxvt::popup> Class
		2128
		2129	=over 4
		2130
		2131	=cut
		2132
		2133	sub add_item {
		2134	my ($self, $item) = @_;
		2135
		2136	$item->{rend}{normal} = "\x1b[0;30;47m" unless exists $item->{rend}{normal};
		2137	$item->{rend}{hover} = "\x1b[0;30;46m" unless exists $item->{rend}{hover};
		2138	$item->{rend}{active} = "\x1b[m" unless exists $item->{rend}{active};
		2139
		2140	$item->{render} ||= sub { $_[0]{text} };
		2141
		2142	push @{ $self->{item} }, $item;
		2143	}
		2144
		2145	=item $popup->add_title ($title)
		2146
		2147	Adds a non-clickable title to the popup.
		2148
		2149	=cut
		2150
		2151	sub add_title {
		2152	my ($self, $title) = @_;
		2153
		2154	$self->add_item ({
		2155	rend => { normal => "\x1b[38;5;11;44m", hover => "\x1b[38;5;11;44m", active => "\x1b[38;5;11;44m" },
		2156	text => $title,
		2157	activate => sub { },
		2158	});
		2159	}
		2160
		2161	=item $popup->add_separator ([$sepchr])
		2162
		2163	Creates a separator, optionally using the character given as C<$sepchr>.
		2164
		2165	=cut
		2166
		2167	sub add_separator {
		2168	my ($self, $sep) = @_;
		2169
		2170	$sep ||= "=";
		2171
		2172	$self->add_item ({
		2173	rend => { normal => "\x1b[0;30;47m", hover => "\x1b[0;30;47m", active => "\x1b[0;30;47m" },
		2174	text => "",
		2175	render => sub { $sep x $self->{term}->ncol },
		2176	activate => sub { },
		2177	});
		2178	}
		2179
		2180	=item $popup->add_button ($text, $cb)
		2181
		2182	Adds a clickable button to the popup. C<$cb> is called whenever it is
		2183	selected.
		2184
		2185	=cut
		2186
		2187	sub add_button {
		2188	my ($self, $text, $cb) = @_;
		2189
		2190	$self->add_item ({ type => "button", text => $text, activate => $cb});
		2191	}
		2192
		2193	=item $popup->add_toggle ($text, $initial_value, $cb)
		2194
		2195	Adds a toggle/checkbox item to the popup. The callback gets called
		2196	whenever it gets toggled, with a boolean indicating its new value as its
		2197	first argument.
		2198
		2199	=cut
		2200
		2201	sub add_toggle {
		2202	my ($self, $text, $value, $cb) = @_;
		2203
		2204	my $item; $item = {
		2205	type => "button",
		2206	text => " $text",
		2207	value => $value,
		2208	render => sub { ($_[0]{value} ? "* " : " ") . $text },
		2209	activate => sub { $cb->($_[1]{value} = !$_[1]{value}); },
		2210	};
		2211
		2212	$self->add_item ($item);
		2213	}
		2214
		2215	=item $popup->show
		2216
		2217	Displays the popup (which is initially hidden).
		2218
		2219	=cut
		2220
		2221	sub show {
		2222	my ($self) = @_;
		2223
		2224	local $urxvt::popup::self = $self;
		2225
		2226	my $env = $self->{term}->env;
		2227	# we can't hope to reproduce the locale algorithm, so nuke LC_ALL and set LC_CTYPE.
		2228	delete $env->{LC_ALL};
		2229	$env->{LC_CTYPE} = $self->{term}->locale;
		2230
		2231	my $term = urxvt::term->new (
		2232	$env, "popup",
		2233	"--perl-lib" => "", "--perl-ext-common" => "",
		2234	"-pty-fd" => -1, "-sl" => 0,
		2235	"-b" => 1, "-bd" => "grey80", "-bl", "-override-redirect",
		2236	"--transient-for" => $self->{term}->parent,
		2237	"-display" => $self->{term}->display_id,
		2238	"-pe" => "urxvt-popup",
		2239	) or die "unable to create popup window\n";
		2240
		2241	unless (delete $term->{urxvt_popup_init_done}) {
		2242	$term->ungrab;
		2243	$term->destroy;
		2244	die "unable to initialise popup window\n";
		2245	}
		2246	}
		2247
		2248	sub DESTROY {
		2249	my ($self) = @_;
		2250
		2251	delete $self->{term}{_destroy}{$self};
		2252	$self->{term}->ungrab;
		2253	}
		2254
		2255	=back
		2256
		2257	=cut
		2258
		2259	package urxvt::watcher;
446		2260
447	=head2 The C<urxvt::timer> Class	2261	=head2 The C<urxvt::timer> Class
448		2262
449	This class implements timer watchers/events. Time is represented as a	2263	This class implements timer watchers/events. Time is represented as a
450	fractional number of seconds since the epoch. Example:	2264	fractional number of seconds since the epoch. Example:
451		2265
452	# create a digital clock display in upper right corner	2266	$term->{overlay} = $term->overlay (-1, 0, 8, 1, urxvt::OVERLAY_RSTYLE, 0);
453	$term->{timer} = urxvt::timer	2267	$term->{timer} = urxvt::timer
454	->new	2268	->new
455	->start (urxvt::NOW)	2269	->interval (1)
456	->cb (sub {	2270	->cb (sub {
457	my ($timer) = @_;
458	my $time = $timer->at;
459	$timer->start ($time + 1);
460	$self->scr_overlay (-1, 0,	2271	$term->{overlay}->set (0, 0,
461	POSIX::strftime "%H:%M:%S", localtime $time);	2272	sprintf "%2d:%02d:%02d", (localtime urxvt::NOW)[2,1,0]);
462	});	2273	});
463		2274
464	=over 4	2275	=over 4
465		2276
466	=item $timer = new urxvt::timer	2277	=item $timer = new urxvt::timer
467		2278
468	Create a new timer object in stopped state.	2279	Create a new timer object in started state. It is scheduled to fire
		2280	immediately.
469		2281
470	=item $timer = $timer->cb (sub { my ($timer) = @_; ... })	2282	=item $timer = $timer->cb (sub { my ($timer) = @_; ... })
471		2283
472	Set the callback to be called when the timer triggers.	2284	Set the callback to be called when the timer triggers.
473		2285
474	=item $tstamp = $timer->at
475
476	Return the time this watcher will fire next.
477
478	=item $timer = $timer->set ($tstamp)	2286	=item $timer = $timer->set ($tstamp[, $interval])
479		2287
480	Set the time the event is generated to $tstamp.	2288	Set the time the event is generated to $tstamp (and optionally specifies a
		2289	new $interval).
		2290
		2291	=item $timer = $timer->interval ($interval)
		2292
		2293	By default (and when C<$interval> is C<0>), the timer will automatically
		2294	stop after it has fired once. If C<$interval> is non-zero, then the timer
		2295	is automatically rescheduled at the given intervals.
481		2296
482	=item $timer = $timer->start	2297	=item $timer = $timer->start
483		2298
484	Start the timer.	2299	Start the timer.
485		2300
486	=item $timer = $timer->start ($tstamp)	2301	=item $timer = $timer->start ($tstamp[, $interval])
487		2302
488	Set the event trigger time to C<$tstamp> and start the timer.	2303	Set the event trigger time to C<$tstamp> and start the timer. Optionally
		2304	also replaces the interval.
		2305
		2306	=item $timer = $timer->after ($delay[, $interval])
		2307
		2308	Like C<start>, but sets the expiry timer to c<urxvt::NOW + $delay>.
489		2309
490	=item $timer = $timer->stop	2310	=item $timer = $timer->stop
491		2311
492	Stop the timer.	2312	Stop the timer.
493		2313
…		…
499		2319
500	$term->{socket} = ...	2320	$term->{socket} = ...
501	$term->{iow} = urxvt::iow	2321	$term->{iow} = urxvt::iow
502	->new	2322	->new
503	->fd (fileno $term->{socket})	2323	->fd (fileno $term->{socket})
504	->events (1) # wait for read data	2324	->events (urxvt::EV_READ)
505	->start	2325	->start
506	->cb (sub {	2326	->cb (sub {
507	my ($iow, $revents) = @_;	2327	my ($iow, $revents) = @_;
508	# $revents must be 1 here, no need to check	2328	# $revents must be 1 here, no need to check
509	sysread $term->{socket}, my $buf, 8192	2329	sysread $term->{socket}, my $buf, 8192
…		…
522	Set the callback to be called when io events are triggered. C<$reventmask>	2342	Set the callback to be called when io events are triggered. C<$reventmask>
523	is a bitset as described in the C<events> method.	2343	is a bitset as described in the C<events> method.
524		2344
525	=item $iow = $iow->fd ($fd)	2345	=item $iow = $iow->fd ($fd)
526		2346
527	Set the filedescriptor (not handle) to watch.	2347	Set the file descriptor (not handle) to watch.
528		2348
529	=item $iow = $iow->events ($eventmask)	2349	=item $iow = $iow->events ($eventmask)
530		2350
531	Set the event mask to watch. Bit #0 (value C<1>) enables watching for read	2351	Set the event mask to watch. The only allowed values are
532	data, Bit #1 (value C<2>) enables watching for write data.	2352	C<urxvt::EV_READ> and C<urxvt::EV_WRITE>, which might be ORed
		2353	together, or C<urxvt::EV_NONE>.
533		2354
534	=item $iow = $iow->start	2355	=item $iow = $iow->start
535		2356
536	Start watching for requested events on the given handle.	2357	Start watching for requested events on the given handle.
537		2358
538	=item $iow = $iow->stop	2359	=item $iow = $iow->stop
539		2360
540	Stop watching for events on the given filehandle.	2361	Stop watching for events on the given file handle.
		2362
		2363	=back
		2364
		2365	=head2 The C<urxvt::iw> Class
		2366
		2367	This class implements idle watchers, that get called automatically when
		2368	the process is idle. They should return as fast as possible, after doing
		2369	some useful work.
		2370
		2371	=over 4
		2372
		2373	=item $iw = new urxvt::iw
		2374
		2375	Create a new idle watcher object in stopped state.
		2376
		2377	=item $iw = $iw->cb (sub { my ($iw) = @_; ... })
		2378
		2379	Set the callback to be called when the watcher triggers.
		2380
		2381	=item $timer = $timer->start
		2382
		2383	Start the watcher.
		2384
		2385	=item $timer = $timer->stop
		2386
		2387	Stop the watcher.
		2388
		2389	=back
		2390
		2391	=head2 The C<urxvt::pw> Class
		2392
		2393	This class implements process watchers. They create an event whenever a
		2394	process exits, after which they stop automatically.
		2395
		2396	my $pid = fork;
		2397	...
		2398	$term->{pw} = urxvt::pw
		2399	->new
		2400	->start ($pid)
		2401	->cb (sub {
		2402	my ($pw, $exit_status) = @_;
		2403	...
		2404	});
		2405
		2406	=over 4
		2407
		2408	=item $pw = new urxvt::pw
		2409
		2410	Create a new process watcher in stopped state.
		2411
		2412	=item $pw = $pw->cb (sub { my ($pw, $exit_status) = @_; ... })
		2413
		2414	Set the callback to be called when the timer triggers.
		2415
		2416	=item $pw = $timer->start ($pid)
		2417
		2418	Tells the watcher to start watching for process C<$pid>.
		2419
		2420	=item $pw = $pw->stop
		2421
		2422	Stop the watcher.
541		2423
542	=back	2424	=back
543		2425
544	=head1 ENVIRONMENT	2426	=head1 ENVIRONMENT
545		2427
…		…
548	This variable controls the verbosity level of the perl extension. Higher	2430	This variable controls the verbosity level of the perl extension. Higher
549	numbers indicate more verbose output.	2431	numbers indicate more verbose output.
550		2432
551	=over 4	2433	=over 4
552		2434
553	=item 0 - only fatal messages	2435	=item == 0 - fatal messages
554		2436
555	=item 3 - script loading and management	2437	=item >= 3 - script loading and management
556		2438
557	=item 10 - all events received	2439	=item >=10 - all called hooks
		2440
		2441	=item >=11 - hook return values
558		2442
559	=back	2443	=back
560		2444
561	=head1 AUTHOR	2445	=head1 AUTHOR
562		2446
563	Marc Lehmann <pcg@goof.com>	2447	Marc Lehmann <schmorp@schmorp.de>
564	http://software.schmorp.de/pkg/rxvt-unicode	2448	http://software.schmorp.de/pkg/rxvt-unicode
565		2449
566	=cut	2450	=cut
567		2451
568	1	2452	1
		2453
		2454	# vim: sw=3:

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