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Revision 1.5 by root, Mon Jan 2 17:20:00 2006 UTC vs.
Revision 1.118 by root, Fri Jan 20 18:50:49 2006 UTC

		1	=encoding utf8
		2
1	=head1 NAME	3	=head1 NAME
2		4
3	rxvtperl - rxvt-unicode's embedded perl interpreter	5	@@RXVT_NAME@@perl - rxvt-unicode's embedded perl interpreter
4		6
5	=head1 SYNOPSIS	7	=head1 SYNOPSIS
6		8
7	* Put your scripts into F<@@RXVT_LIBDIR@@/urxvt/perl-ext/>, they will be loaded automatically.	9	# create a file grab_test in $HOME:
8
9	* Each script will only be loaded once, even in urxvtd, and will be valid
10	globally.
11
12	* Scripts are evaluated in a 'use strict' and 'use utf8' environment, and
13	thus must be encoded as UTF-8.
14		10
15	sub on_sel_grab {	11	sub on_sel_grab {
16	warn "you selected ", $_[0]->selection;	12	warn "you selected ", $_[0]->selection;
17	()	13	()
18	}	14	}
19		15
20	1	16	# start a @@RXVT_NAME@@ using it:
		17
		18	@@RXVT_NAME@@ --perl-lib $HOME -pe grab_test
21		19
22	=head1 DESCRIPTION	20	=head1 DESCRIPTION
23		21
		22	Everytime a terminal object gets created, extension scripts specified via
		23	the C<perl> resource are loaded and associated with it.
		24
		25	Scripts are compiled in a 'use strict' and 'use utf8' environment, and
		26	thus must be encoded as UTF-8.
		27
		28	Each script will only ever be loaded once, even in @@RXVT_NAME@@d, where
		29	scripts will be shared (but not enabled) for all terminals.
		30
		31	=head1 PREPACKAGED EXTENSIONS
		32
		33	This section describes the extensions delivered with this release. You can
		34	find them in F<@@RXVT_LIBDIR@@/urxvt/perl/>.
		35
		36	You can activate them like this:
		37
		38	@@RXVT_NAME@@ -pe <extensionname>
		39
		40	Or by adding them to the resource for extensions loaded by default:
		41
		42	URxvt.perl-ext-common: default,automove-background,selection-autotransform
		43
		44	=over 4
		45
		46	=item selection (enabled by default)
		47
		48	(More) intelligent selection. This extension tries to be more intelligent
		49	when the user extends selections (double-click and further clicks). Right
		50	now, it tries to select words, urls and complete shell-quoted
		51	arguments, which is very convenient, too, if your F<ls> supports
		52	C<--quoting-style=shell>.
		53
		54	A double-click usually selects the word under the cursor, further clicks
		55	will enlarge the selection.
		56
		57	The selection works by trying to match a number of regexes and displaying
		58	them in increasing order of length. You can add your own regexes by
		59	specifying resources of the form:
		60
		61	URxvt.selection.pattern-0: perl-regex
		62	URxvt.selection.pattern-1: perl-regex
		63	...
		64
		65	The index number (0, 1...) must not have any holes, and each regex must
		66	contain at least one pair of capturing parentheses, which will be used for
		67	the match. For example, the followign adds a regex that matches everything
		68	between two vertical bars:
		69
		70	URxvt.selection.pattern-0: \\|([^|]+)\\|
		71
		72	You can look at the source of the selection extension to see more
		73	interesting uses, such as parsing a line from beginning to end.
		74
		75	This extension also offers following bindable keyboard commands:
		76
		77	=over 4
		78
		79	=item rot13
		80
		81	Rot-13 the selection when activated. Used via keyboard trigger:
		82
		83	URxvt.keysym.C-M-r: perl:selection:rot13
		84
		85	=back
		86
		87	=item option-popup (enabled by default)
		88
		89	Binds a popup menu to Ctrl-Button2 that lets you toggle (some) options at
		90	runtime.
		91
		92	=item selection-popup (enabled by default)
		93
		94	Binds a popup menu to Ctrl-Button3 that lets you convert the selection
		95	text into various other formats/action (such as uri unescaping, perl
		96	evaluation, web-browser starting etc.), depending on content.
		97
		98	Other extensions can extend this popup menu by pushing a code reference
		99	onto C<@{ $term->{selection_popup_hook} }>, that is called whenever the
		100	popup is displayed.
		101
		102	It's sole argument is the popup menu, which can be modified. The selection
		103	is in C<$_>, which can be used to decide wether to add something or not.
		104	It should either return nothing or a string and a code reference. The
		105	string will be used as button text and the code reference will be called
		106	when the button gets activated and should transform C<$_>.
		107
		108	The following will add an entry C<a to b> that transforms all C<a>s in
		109	the selection to C<b>s, but only if the selection currently contains any
		110	C<a>s:
		111
		112	push @{ $self->{term}{selection_popup_hook} }, sub {
		113	/a/ ? ("a to be" => sub { s/a/b/g }
		114	: ()
		115	};
		116
		117	=item searchable-scrollback<hotkey> (enabled by default)
		118
		119	Adds regex search functionality to the scrollback buffer, triggered
		120	by a hotkey (default: C<M-s>). While in search mode, normal terminal
		121	input/output is suspended and a regex is displayed at the bottom of the
		122	screen.
		123
		124	Inputting characters appends them to the regex and continues incremental
		125	search. C<BackSpace> removes a character from the regex, C<Up> and C<Down>
		126	search upwards/downwards in the scrollback buffer, C<End> jumps to the
		127	bottom. C<Escape> leaves search mode and returns to the point where search
		128	was started, while C<Enter> or C<Return> stay at the current position and
		129	additionally stores the first match in the current line into the primary
		130	selection.
		131
		132	=item selection-autotransform
		133
		134	This selection allows you to do automatic transforms on a selection
		135	whenever a selection is made.
		136
		137	It works by specifying perl snippets (most useful is a single C<s///>
		138	operator) that modify C<$_> as resources:
		139
		140	URxvt.selection-autotransform.0: transform
		141	URxvt.selection-autotransform.1: transform
		142	...
		143
		144	For example, the following will transform selections of the form
		145	C<filename:number>, often seen in compiler messages, into C<vi +$filename
		146	$word>:
		147
		148	URxvt.selection-autotransform.0: s/^([^:[:space:]]+):(\\d+):?$/vi +$2 \\Q$1\\E\\x0d/
		149
		150	And this example matches the same,but replaces it with vi-commands you can
		151	paste directly into your (vi :) editor:
		152
		153	URxvt.selection-autotransform.0: s/^([^:[:space:]]+(\\d+):?$/:e \\Q$1\\E\\x0d:$2\\x0d/
		154
		155	Of course, this can be modified to suit your needs and your editor :)
		156
		157	To expand the example above to typical perl error messages ("XXX at
		158	FILENAME line YYY."), you need a slightly more elaborate solution:
		159
		160	URxvt.selection.pattern-0: ( at .*? line \\d+[,.])
		161	URxvt.selection-autotransform.0: s/^ at (.*?) line (\\d+)[,.]$/:e \\Q$1\E\\x0d:$2\\x0d/
		162
		163	The first line tells the selection code to treat the unchanging part of
		164	every error message as a selection pattern, and the second line transforms
		165	the message into vi commands to load the file.
		166
		167	=item tabbed
		168
		169	This transforms the terminal into a tabbar with additional terminals, that
		170	is, it implements what is commonly refered to as "tabbed terminal". The topmost line
		171	displays a "[NEW]" button, which, when clicked, will add a new tab, followed by one
		172	button per tab.
		173
		174	Clicking a button will activate that tab. Pressing B<Shift-Left> and
		175	B<Shift-Right> will switch to the tab left or right of the current one,
		176	while B<Shift-Down> creates a new tab.
		177
		178	=item mark-urls
		179
		180	Uses per-line display filtering (C<on_line_update>) to underline urls and
		181	make them clickable. When middle-clicked, the program specified in the
		182	resource C<urlLauncher> (default C<x-www-browser>) will be started with
		183	the URL as first argument.
		184
		185	=item automove-background
		186
		187	This is basically a one-line extension that dynamically changes the background pixmap offset
		188	to the window position, in effect creating the same effect as pseudo transparency with
		189	a custom pixmap. No scaling is supported in this mode. Exmaple:
		190
		191	@@RXVT_NAME@@ -pixmap background.xpm -pe automove-background
		192
		193	=item block-graphics-to-ascii
		194
		195	A not very useful example of filtering all text output to the terminal,
		196	by replacing all line-drawing characters (U+2500 .. U+259F) by a
		197	similar-looking ascii character.
		198
		199	=item digital-clock
		200
		201	Displays a digital clock using the built-in overlay.
		202
		203	=item example-refresh-hooks
		204
		205	Displays a very simple digital clock in the upper right corner of the
		206	window. Illustrates overwriting the refresh callbacks to create your own
		207	overlays or changes.
		208
		209	=item selection-pastebin
		210
		211	This is a little rarely useful extension that Uploads the selection as
		212	textfile to a remote site (or does other things). (The implementation is
		213	not currently secure for use in a multiuser environment as it writes to
		214	F</tmp> directly.).
		215
		216	It listens to the C<selection-pastebin:remote-pastebin> keyboard command,
		217	i.e.
		218
		219	URxvt.keysym.C-M-e: perl:selection-pastebin:remote-pastebin
		220
		221	Pressing this combination runs a command with C<%> replaced by the name of
		222	the textfile. This command can be set via a resource:
		223
		224	URxvt.selection-pastebin.cmd: rsync -apP % ruth:/var/www/www.ta-sa.org/files/txt/.
		225
		226	And the default is likely not useful to anybody but the few people around
		227	here :)
		228
		229	The name of the textfile is the hex encoded md5 sum of the selection, so
		230	the same content should lead to the same filename.
		231
		232	After a successful upload the selection will be replaced by the text given
		233	in the C<selection-pastebin-url> resource (again, the % is the placeholder
		234	for the filename):
		235
		236	URxvt.selection-pastebin.url: http://www.ta-sa.org/files/txt/%
		237
		238	=back
		239
		240	=head1 API DOCUMENTATION
		241
		242	=head2 General API Considerations
		243
		244	All objects (such as terminals, time watchers etc.) are typical
		245	reference-to-hash objects. The hash can be used to store anything you
		246	like. All members starting with an underscore (such as C<_ptr> or
		247	C<_hook>) are reserved for internal uses and B<MUST NOT> be accessed or
		248	modified).
		249
		250	When objects are destroyed on the C++ side, the perl object hashes are
		251	emptied, so its best to store related objects such as time watchers and
		252	the like inside the terminal object so they get destroyed as soon as the
		253	terminal is destroyed.
		254
		255	Argument names also often indicate the type of a parameter. Here are some
		256	hints on what they mean:
		257
		258	=over 4
		259
		260	=item $text
		261
		262	Rxvt-unicodes special way of encoding text, where one "unicode" character
		263	always represents one screen cell. See L<ROW_t> for a discussion of this format.
		264
		265	=item $string
		266
		267	A perl text string, with an emphasis on I<text>. It can store all unicode
		268	characters and is to be distinguished with text encoded in a specific
		269	encoding (often locale-specific) and binary data.
		270
		271	=item $octets
		272
		273	Either binary data or - more common - a text string encoded in a
		274	locale-specific way.
		275
		276	=back
		277
		278	=head2 Extension Objects
		279
		280	Very perl extension is a perl class. A separate perl object is created
		281	for each terminal and each extension and passed as the first parameter to
		282	hooks. So extensions can use their C<$self> object without having to think
		283	about other extensions, with the exception of methods and members that
		284	begin with an underscore character C<_>: these are reserved for internal
		285	use.
		286
		287	Although it isn't a C<urxvt::term> object, you can call all methods of the
		288	C<urxvt::term> class on this object.
		289
		290	It has the following methods and data members:
		291
		292	=over 4
		293
		294	=item $urxvt_term = $self->{term}
		295
		296	Returns the C<urxvt::term> object associated with this instance of the
		297	extension. This member I<must not> be changed in any way.
		298
		299	=item $self->enable ($hook_name => $cb, [$hook_name => $cb..])
		300
		301	Dynamically enable the given hooks (named without the C<on_> prefix) for
		302	this extension, replacing any previous hook. This is useful when you want
		303	to overwrite time-critical hooks only temporarily.
		304
		305	=item $self->disable ($hook_name[, $hook_name..])
		306
		307	Dynamically disable the given hooks.
		308
		309	=back
		310
24	=head2 Hooks	311	=head2 Hooks
25		312
26	The following subroutines can be declared in loaded scripts, and will be called	313	The following subroutines can be declared in extension files, and will be
27	whenever the relevant event happens.	314	called whenever the relevant event happens.
28		315
29	All of them must return a boolean value. If it is true, then the event	316	The first argument passed to them is an extension oject as described in
30	counts as being I<consumed>, and the invocation of other hooks is skipped,	317	the in the C<Extension Objects> section.
		318
		319	B<All> of these hooks must return a boolean value. If any of the called
		320	hooks returns true, then the event counts as being I<consumed>, and the
31	and the relevant action might not be carried out by the C++ code.	321	relevant action might not be carried out by the C++ code.
32		322
33	When in doubt, return a false value (preferably C<()>).	323	I<< When in doubt, return a false value (preferably C<()>). >>
34		324
35	=over 4	325	=over 4
36		326
37	=item on_init $term	327	=item on_init $term
38		328
39	Called after a new terminal object has been initialized, but before	329	Called after a new terminal object has been initialized, but before
40	windows are created or the command gets run.	330	windows are created or the command gets run. Most methods are unsafe to
		331	call or deliver senseless data, as terminal size and other characteristics
		332	have not yet been determined. You can safely query and change resources
		333	and options, though. For many purposes the C<on_start> hook is a better
		334	place.
		335
		336	=item on_start $term
		337
		338	Called at the very end of initialisation of a new terminal, just before
		339	trying to map (display) the toplevel and returning to the mainloop.
		340
		341	=item on_destroy $term
		342
		343	Called whenever something tries to destroy terminal, before doing anything
		344	yet. If this hook returns true, then destruction is skipped, but this is
		345	rarely a good idea.
41		346
42	=item on_reset $term	347	=item on_reset $term
43		348
44	Called after the screen is "reset" for any reason, such as resizing or	349	Called after the screen is "reset" for any reason, such as resizing or
45	control sequences. Here is where you can react on changes to size-related	350	control sequences. Here is where you can react on changes to size-related
46	variables.	351	variables.
47		352
48	=item on_start $term	353	=item on_child_start $term, $pid
49		354
50	Called at the very end of initialisation of a new terminal, just before	355	Called just after the child process has been C<fork>ed.
51	returning to the mainloop.	356
		357	=item on_child_exit $term, $status
		358
		359	Called just after the child process has exited. C<$status> is the status
		360	from C<waitpid>.
52		361
53	=item on_sel_make $term, $eventtime	362	=item on_sel_make $term, $eventtime
54		363
55	Called whenever a selection has been made by the user, but before the	364	Called whenever a selection has been made by the user, but before the
56	selection text is copied, so changes to the beginning, end or type of the	365	selection text is copied, so changes to the beginning, end or type of the
…		…
65	requested from the server. The selection text can be queried and changed	374	requested from the server. The selection text can be queried and changed
66	by calling C<< $term->selection >>.	375	by calling C<< $term->selection >>.
67		376
68	Returning a true value aborts selection grabbing. It will still be hilighted.	377	Returning a true value aborts selection grabbing. It will still be hilighted.
69		378
70	=item on_focus_in $term	379	=item on_sel_extend $term
71		380
72	Called whenever the window gets the keyboard focus, before urxvt does	381	Called whenever the user tries to extend the selection (e.g. with a double
73	focus in processing.	382	click) and is either supposed to return false (normal operation), or
		383	should extend the selection itelf and return true to suppress the built-in
		384	processing. This can happen multiple times, as long as the callback
		385	returns true, it will be called on every further click by the user and is
		386	supposed to enlarge the selection more and more, if possible.
74		387
75	=item on_focus_out $term	388	See the F<selection> example extension.
76
77	Called wheneever the window loses keyboard focus, before urxvt does focus
78	out processing.
79		389
80	=item on_view_change $term, $offset	390	=item on_view_change $term, $offset
81		391
82	Called whenever the view offset changes, i..e the user or program	392	Called whenever the view offset changes, i..e the user or program
83	scrolls. Offset C<0> means display the normal terminal, positive values	393	scrolls. Offset C<0> means display the normal terminal, positive values
…		…
91		401
92	It is called before lines are scrolled out (so rows 0 .. min ($lines - 1,	402	It is called before lines are scrolled out (so rows 0 .. min ($lines - 1,
93	$nrow - 1) represent the lines to be scrolled out). C<$saved> is the total	403	$nrow - 1) represent the lines to be scrolled out). C<$saved> is the total
94	number of lines that will be in the scrollback buffer.	404	number of lines that will be in the scrollback buffer.
95		405
96	=item on_tty_activity $term *NYI*	406	=item on_osc_seq $term, $string
97		407
98	Called whenever the program(s) running in the urxvt window send output.	408	Called whenever the B<ESC ] 777 ; string ST> command sequence (OSC =
		409	operating system command) is processed. Cursor position and other state
		410	information is up-to-date when this happens. For interoperability, the
		411	string should start with the extension name and a colon, to distinguish
		412	it from commands for other extensions, and this might be enforced in the
		413	future.
		414
		415	Be careful not ever to trust (in a security sense) the data you receive,
		416	as its source can not easily be controleld (e-mail content, messages from
		417	other users on the same system etc.).
		418
		419	=item on_add_lines $term, $string
		420
		421	Called whenever text is about to be output, with the text as argument. You
		422	can filter/change and output the text yourself by returning a true value
		423	and calling C<< $term->scr_add_lines >> yourself. Please note that this
		424	might be very slow, however, as your hook is called for B<all> text being
		425	output.
		426
		427	=item on_tt_write $term, $octets
		428
		429	Called whenever some data is written to the tty/pty and can be used to
		430	suppress or filter tty input.
		431
		432	=item on_line_update $term, $row
		433
		434	Called whenever a line was updated or changed. Can be used to filter
		435	screen output (e.g. underline urls or other useless stuff). Only lines
		436	that are being shown will be filtered, and, due to performance reasons,
		437	not always immediately.
		438
		439	The row number is always the topmost row of the line if the line spans
		440	multiple rows.
		441
		442	Please note that, if you change the line, then the hook might get called
		443	later with the already-modified line (e.g. if unrelated parts change), so
		444	you cannot just toggle rendition bits, but only set them.
99		445
100	=item on_refresh_begin $term	446	=item on_refresh_begin $term
101		447
102	Called just before the screen gets redrawn. Can be used for overlay	448	Called just before the screen gets redrawn. Can be used for overlay
103	or similar effects by modify terminal contents in refresh_begin, and	449	or similar effects by modify terminal contents in refresh_begin, and
…		…
106		452
107	=item on_refresh_end $term	453	=item on_refresh_end $term
108		454
109	Called just after the screen gets redrawn. See C<on_refresh_begin>.	455	Called just after the screen gets redrawn. See C<on_refresh_begin>.
110		456
		457	=item on_keyboard_command $term, $string
		458
		459	Called whenever the user presses a key combination that has a
		460	C<perl:string> action bound to it (see description of the B<keysym>
		461	resource in the @@RXVT_NAME@@(1) manpage).
		462
		463	=item on_x_event $term, $event
		464
		465	Called on every X event received on the vt window (and possibly other
		466	windows). Should only be used as a last resort. Most event structure
		467	members are not passed.
		468
		469	=item on_focus_in $term
		470
		471	Called whenever the window gets the keyboard focus, before rxvt-unicode
		472	does focus in processing.
		473
		474	=item on_focus_out $term
		475
		476	Called wheneever the window loses keyboard focus, before rxvt-unicode does
		477	focus out processing.
		478
		479	=item on_configure_notify $term, $event
		480
		481	=item on_property_notify $term, $event
		482
		483	=item on_key_press $term, $event, $keysym, $octets
		484
		485	=item on_key_release $term, $event, $keysym
		486
		487	=item on_button_press $term, $event
		488
		489	=item on_button_release $term, $event
		490
		491	=item on_motion_notify $term, $event
		492
		493	=item on_map_notify $term, $event
		494
		495	=item on_unmap_notify $term, $event
		496
		497	Called whenever the corresponding X event is received for the terminal If
		498	the hook returns true, then the even will be ignored by rxvt-unicode.
		499
		500	The event is a hash with most values as named by Xlib (see the XEvent
		501	manpage), with the additional members C<row> and C<col>, which are the row
		502	and column under the mouse cursor.
		503
		504	C<on_key_press> additionally receives the string rxvt-unicode would
		505	output, if any, in locale-specific encoding.
		506
		507	subwindow.
		508
		509	=item on_client_message $term, $event
		510
		511	=item on_wm_protocols $term, $event
		512
		513	=item on_wm_delete_window $term, $event
		514
		515	Called when various types of ClientMessage events are received (all with
		516	format=32, WM_PROTOCOLS or WM_PROTOCOLS:WM_DELETE_WINDOW).
		517
		518	=back
		519
		520	=cut
		521
		522	package urxvt;
		523
		524	use utf8;
		525	use strict;
		526	use Carp ();
		527	use Scalar::Util ();
		528	use List::Util ();
		529
		530	our $VERSION = 1;
		531	our $TERM;
		532	our @TERM_INIT;
		533	our @TERM_EXT;
		534	our @HOOKNAME;
		535	our %HOOKTYPE = map +($HOOKNAME[$_] => $_), 0..$#HOOKNAME;
		536	our %OPTION;
		537
		538	our $LIBDIR;
		539	our $RESNAME;
		540	our $RESCLASS;
		541	our $RXVTNAME;
		542
		543	=head2 Variables in the C<urxvt> Package
		544
		545	=over 4
		546
		547	=item $urxvt::LIBDIR
		548
		549	The rxvt-unicode library directory, where, among other things, the perl
		550	modules and scripts are stored.
		551
		552	=item $urxvt::RESCLASS, $urxvt::RESCLASS
		553
		554	The resource class and name rxvt-unicode uses to look up X resources.
		555
		556	=item $urxvt::RXVTNAME
		557
		558	The basename of the installed binaries, usually C<urxvt>.
		559
		560	=item $urxvt::TERM
		561
		562	The current terminal. This variable stores the current C<urxvt::term>
		563	object, whenever a callback/hook is executing.
		564
		565	=item @urxvt::TERM_INIT
		566
		567	All coderefs in this array will be called as methods of the next newly
		568	created C<urxvt::term> object (during the C<on_init> phase). The array
		569	gets cleared before the codereferences that were in it are being executed,
		570	so coderefs can push themselves onto it again if they so desire.
		571
		572	This complements to the perl-eval commandline option, but gets executed
		573	first.
		574
		575	=item @urxvt::TERM_EXT
		576
		577	Works similar to C<@TERM_INIT>, but contains perl package/class names, which
		578	get registered as normal extensions after calling the hooks in C<@TERM_INIT>
		579	but before other extensions. Gets cleared just like C<@TERM_INIT>.
		580
111	=back	581	=back
112		582
113	=head2 Functions in the C<urxvt> Package	583	=head2 Functions in the C<urxvt> Package
114		584
115	=over 4	585	=over 4
…		…
120	costs! The only time this is acceptable is when the terminal process	590	costs! The only time this is acceptable is when the terminal process
121	starts up.	591	starts up.
122		592
123	=item urxvt::warn $string	593	=item urxvt::warn $string
124		594
125	Calls C<rxvt_warn> witht eh given string which should not include a	595	Calls C<rxvt_warn> with the given string which should not include a
126	newline. The module also overwrites the C<warn> builtin with a function	596	newline. The module also overwrites the C<warn> builtin with a function
127	that calls this function.	597	that calls this function.
128		598
129	Using this function has the advantage that its output ends up in the	599	Using this function has the advantage that its output ends up in the
130	correct place, e.g. on stderr of the connecting urxvtc client.	600	correct place, e.g. on stderr of the connecting urxvtc client.
131		601
132	=item $cellwidth = urxvt::wcswidth $string	602	Messages have a size limit of 1023 bytes currently.
133
134	Returns the number of screen-cells this string would need. Correctly
135	accounts for wide and combining characters.
136		603
137	=item $time = urxvt::NOW	604	=item $time = urxvt::NOW
138		605
139	Returns the "current time" (as per the event loop).	606	Returns the "current time" (as per the event loop).
140		607
		608	=item urxvt::CurrentTime
		609
		610	=item urxvt::ShiftMask, LockMask, ControlMask, Mod1Mask, Mod2Mask,
		611	Mod3Mask, Mod4Mask, Mod5Mask, Button1Mask, Button2Mask, Button3Mask,
		612	Button4Mask, Button5Mask, AnyModifier
		613
		614	=item urxvt::NoEventMask, KeyPressMask, KeyReleaseMask,
		615	ButtonPressMask, ButtonReleaseMask, EnterWindowMask, LeaveWindowMask,
		616	PointerMotionMask, PointerMotionHintMask, Button1MotionMask, Button2MotionMask,
		617	Button3MotionMask, Button4MotionMask, Button5MotionMask, ButtonMotionMask,
		618	KeymapStateMask, ExposureMask, VisibilityChangeMask, StructureNotifyMask,
		619	ResizeRedirectMask, SubstructureNotifyMask, SubstructureRedirectMask,
		620	FocusChangeMask, PropertyChangeMask, ColormapChangeMask, OwnerGrabButtonMask
		621
		622	=item urxvt::KeyPress, KeyRelease, ButtonPress, ButtonRelease, MotionNotify,
		623	EnterNotify, LeaveNotify, FocusIn, FocusOut, KeymapNotify, Expose,
		624	GraphicsExpose, NoExpose, VisibilityNotify, CreateNotify, DestroyNotify,
		625	UnmapNotify, MapNotify, MapRequest, ReparentNotify, ConfigureNotify,
		626	ConfigureRequest, GravityNotify, ResizeRequest, CirculateNotify,
		627	CirculateRequest, PropertyNotify, SelectionClear, SelectionRequest,
		628	SelectionNotify, ColormapNotify, ClientMessage, MappingNotify
		629
		630	Various constants for use in X calls and event processing.
		631
		632	=back
		633
		634	=head2 RENDITION
		635
		636	Rendition bitsets contain information about colour, font, font styles and
		637	similar information for each screen cell.
		638
		639	The following "macros" deal with changes in rendition sets. You should
		640	never just create a bitset, you should always modify an existing one,
		641	as they contain important information required for correct operation of
		642	rxvt-unicode.
		643
		644	=over 4
		645
		646	=item $rend = urxvt::DEFAULT_RSTYLE
		647
		648	Returns the default rendition, as used when the terminal is starting up or
		649	being reset. Useful as a base to start when creating renditions.
		650
		651	=item $rend = urxvt::OVERLAY_RSTYLE
		652
		653	Return the rendition mask used for overlays by default.
		654
		655	=item $rendbit = urxvt::RS_Bold, RS_Italic, RS_Blink, RS_RVid, RS_Uline
		656
		657	Return the bit that enabled bold, italic, blink, reverse-video and
		658	underline, respectively. To enable such a style, just logically OR it into
		659	the bitset.
		660
		661	=item $foreground = urxvt::GET_BASEFG $rend
		662
		663	=item $background = urxvt::GET_BASEBG $rend
		664
		665	Return the foreground/background colour index, respectively.
		666
		667	=item $rend = urxvt::SET_FGCOLOR $rend, $new_colour
		668
		669	=item $rend = urxvt::SET_BGCOLOR $rend, $new_colour
		670
		671	Replace the foreground/background colour in the rendition mask with the
		672	specified one.
		673
		674	=item $value = urxvt::GET_CUSTOM $rend
		675
		676	Return the "custom" value: Every rendition has 5 bits for use by
		677	extensions. They can be set and changed as you like and are initially
		678	zero.
		679
		680	=item $rend = urxvt::SET_CUSTOM $rend, $new_value
		681
		682	Change the custom value.
		683
		684	=back
		685
141	=cut	686	=cut
142		687
143	package urxvt;
144
145	use strict;
146
147	our $term;
148	our @HOOKNAME;
149	our $LIBDIR;
150
151	BEGIN {	688	BEGIN {
152	urxvt->bootstrap;
153
154	# overwrite perl's warn	689	# overwrite perl's warn
155	*CORE::GLOBAL::warn = sub {	690	*CORE::GLOBAL::warn = sub {
156	my $msg = join "", @_;	691	my $msg = join "", @_;
157	$msg .= "\n"	692	$msg .= "\n"
158	unless $msg =~ /\n$/;	693	unless $msg =~ /\n$/;
159	urxvt::warn ($msg);	694	urxvt::warn ($msg);
160	};	695	};
161	}	696	}
162		697
163	my $verbosity = $ENV{URXVT_PERL_VERBOSITY} || 10;	698	my $verbosity = $ENV{URXVT_PERL_VERBOSITY};
164		699
165	sub verbose {	700	sub verbose {
166	my ($level, $msg) = @_;	701	my ($level, $msg) = @_;
167	warn "$msg\n"; #d#	702	warn "$msg\n" if $level <= $verbosity;
168	}	703	}
169		704
170	my @invoke_cb;	705	my %extension_pkg;
		706
		707	# load a single script into its own package, once only
		708	sub extension_package($) {
		709	my ($path) = @_;
		710
		711	$extension_pkg{$path} ||= do {
		712	$path =~ /([^\/\\]+)$/;
		713	my $pkg = $1;
		714	$pkg =~ s/[^[:word:]]/_/g;
		715	$pkg = "urxvt::ext::$pkg";
		716
		717	verbose 3, "loading extension '$path' into package '$pkg'";
		718
		719	open my $fh, "<:raw", $path
		720	or die "$path: $!";
		721
		722	my $source =
		723	"package $pkg; use strict; use utf8;\n"
		724	. "#line 1 \"$path\"\n{\n"
		725	. (do { local $/; <$fh> })
		726	. "\n};\n1";
		727
		728	eval $source
		729	or die "$path: $@";
		730
		731	$pkg
		732	}
		733	}
		734
		735	our $retval; # return value for urxvt
171		736
172	# called by the rxvt core	737	# called by the rxvt core
173	sub invoke {	738	sub invoke {
174	local $term = shift;	739	local $TERM = shift;
175	my $htype = shift;	740	my $htype = shift;
176		741
177	my $cb = $invoke_cb[$htype];	742	if ($htype == 0) { # INIT
		743	my @dirs = ((split /:/, $TERM->resource ("perl_lib")), "$LIBDIR/perl");
		744
		745	my %ext_arg;
178		746
179	verbose 10, "$HOOKNAME[$htype] (" . (join ", ", $term, @_) . ")"	747	{
180	if $verbosity >= 10;	748	my @init = @TERM_INIT;
		749	@TERM_INIT = ();
		750	$_->($TERM) for @init;
		751	my @pkg = @TERM_EXT;
		752	@TERM_EXT = ();
		753	$TERM->register_package ($_) for @pkg;
		754	}
181		755
		756	for (grep $_, map { split /,/, $TERM->resource ("perl_ext_$_") } 1, 2) {
		757	if ($_ eq "default") {
		758	$ext_arg{$_} ||= [] for qw(selection option-popup selection-popup searchable-scrollback);
		759	} elsif (/^-(.*)$/) {
		760	delete $ext_arg{$1};
		761	} elsif (/^([^<]+)<(.*)>$/) {
		762	push @{ $ext_arg{$1} }, $2;
		763	} else {
		764	$ext_arg{$_} ||= [];
		765	}
		766	}
		767
182	while (my ($k, $v) = each %$cb) {	768	while (my ($ext, $argv) = each %ext_arg) {
183	return 1 if $v->($term, @_);	769	my @files = grep -f $_, map "$_/$ext", @dirs;
		770
		771	if (@files) {
		772	$TERM->register_package (extension_package $files[0], $argv);
		773	} else {
		774	warn "perl extension '$ext' not found in perl library search path\n";
		775	}
		776	}
		777
		778	eval "#line 1 \"--perl-eval resource/argument\"\n" . $TERM->resource ("perl_eval");
		779	warn $@ if $@;
184	}	780	}
185		781
		782	$retval = undef;
		783
		784	if (my $cb = $TERM->{_hook}[$htype]) {
		785	verbose 10, "$HOOKNAME[$htype] (" . (join ", ", $TERM, @_) . ")"
		786	if $verbosity >= 10;
		787
		788	keys %$cb;
		789
		790	while (my ($pkg, $cb) = each %$cb) {
		791	my $retval_ = eval { $cb->($TERM->{_pkg}{$pkg}, @_) };
		792	$retval ||= $retval_;
		793
		794	if ($@) {
		795	$TERM->ungrab; # better to lose the grab than the session
		796	warn $@;
		797	}
		798	}
		799
		800	verbose 11, "$HOOKNAME[$htype] returning <$retval>"
		801	if $verbosity >= 11;
186	0	802	}
		803
		804	if ($htype == 1) { # DESTROY
		805	# clear package objects
		806	%$_ = () for values %{ $TERM->{_pkg} };
		807
		808	# clear package
		809	%$TERM = ();
		810	}
		811
		812	$retval
187	}	813	}
		814
		815	# urxvt::term::extension
		816
		817	package urxvt::term::extension;
		818
		819	sub enable {
		820	my ($self, %hook) = @_;
		821	my $pkg = $self->{_pkg};
		822
		823	while (my ($name, $cb) = each %hook) {
		824	my $htype = $HOOKTYPE{uc $name};
		825	defined $htype
		826	or Carp::croak "unsupported hook type '$name'";
		827
		828	$self->set_should_invoke ($htype, +1)
		829	unless exists $self->{term}{_hook}[$htype]{$pkg};
		830
		831	$self->{term}{_hook}[$htype]{$pkg} = $cb;
		832	}
		833	}
		834
		835	sub disable {
		836	my ($self, @hook) = @_;
		837	my $pkg = $self->{_pkg};
		838
		839	for my $name (@hook) {
		840	my $htype = $HOOKTYPE{uc $name};
		841	defined $htype
		842	or Carp::croak "unsupported hook type '$name'";
		843
		844	$self->set_should_invoke ($htype, -1)
		845	if delete $self->{term}{_hook}[$htype]{$pkg};
		846	}
		847	}
		848
		849	our $AUTOLOAD;
		850
		851	sub AUTOLOAD {
		852	$AUTOLOAD =~ /:([^:]+)$/
		853	or die "FATAL: \$AUTOLOAD '$AUTOLOAD' unparsable";
		854
		855	eval qq{
		856	sub $AUTOLOAD {
		857	my \$proxy = shift;
		858	\$proxy->{term}->$1 (\@_)
		859	}
		860	1
		861	} or die "FATAL: unable to compile method forwarder: $@";
		862
		863	goto &$AUTOLOAD;
		864	}
		865
		866	sub DESTROY {
		867	# nop
		868	}
		869
		870	# urxvt::destroy_hook
		871
		872	sub urxvt::destroy_hook::DESTROY {
		873	${$_[0]}->();
		874	}
		875
		876	sub urxvt::destroy_hook(&) {
		877	bless \shift, urxvt::destroy_hook::
		878	}
		879
		880	package urxvt::anyevent;
		881
		882	=head2 The C<urxvt::anyevent> Class
		883
		884	The sole purpose of this class is to deliver an interface to the
		885	C<AnyEvent> module - any module using it will work inside urxvt without
		886	further programming. The only exception is that you cannot wait on
		887	condition variables, but non-blocking condvar use is ok. What this means
		888	is that you cannot use blocking APIs, but the non-blocking variant should
		889	work.
		890
		891	=cut
		892
		893	our $VERSION = 1;
		894
		895	$INC{"urxvt/anyevent.pm"} = 1; # mark us as there
		896	push @AnyEvent::REGISTRY, [urxvt => urxvt::anyevent::];
		897
		898	sub timer {
		899	my ($class, %arg) = @_;
		900
		901	my $cb = $arg{cb};
		902
		903	urxvt::timer
		904	->new
		905	->start (urxvt::NOW + $arg{after})
		906	->cb (sub {
		907	$_[0]->stop; # need to cancel manually
		908	$cb->();
		909	})
		910	}
		911
		912	sub io {
		913	my ($class, %arg) = @_;
		914
		915	my $cb = $arg{cb};
		916
		917	bless [$arg{fh}, urxvt::iow
		918	->new
		919	->fd (fileno $arg{fh})
		920	->events (($arg{poll} =~ /r/ ? 1 : 0)
		921	| ($arg{poll} =~ /w/ ? 2 : 0))
		922	->start
		923	->cb (sub {
		924	$cb->(($_[1] & 1 ? 'r' : '')
		925	. ($_[1] & 2 ? 'w' : ''));
		926	})],
		927	urxvt::anyevent::
		928	}
		929
		930	sub DESTROY {
		931	$_[0][1]->stop;
		932	}
		933
		934	sub condvar {
		935	bless \my $flag, urxvt::anyevent::condvar::
		936	}
		937
		938	sub urxvt::anyevent::condvar::broadcast {
		939	${$_[0]}++;
		940	}
		941
		942	sub urxvt::anyevent::condvar::wait {
		943	unless (${$_[0]}) {
		944	Carp::croak "AnyEvent->condvar blocking wait unsupported in urxvt, use a non-blocking API";
		945	}
		946	}
		947
		948	package urxvt::term;
		949
		950	=head2 The C<urxvt::term> Class
		951
		952	=over 4
		953
		954	=cut
188		955
189	# find on_xxx subs in the package and register them	956	# find on_xxx subs in the package and register them
190	# as hooks	957	# as hooks
191	sub register_package($) {	958	sub register_package {
192	my ($pkg) = @_;	959	my ($self, $pkg, $argv) = @_;
193		960
		961	no strict 'refs';
		962
		963	urxvt::verbose 6, "register package $pkg to $self";
		964
		965	@{"$pkg\::ISA"} = urxvt::term::extension::;
		966
		967	my $proxy = bless {
		968	_pkg => $pkg,
		969	argv => $argv,
		970	}, $pkg;
		971	Scalar::Util::weaken ($proxy->{term} = $self);
		972
		973	$self->{_pkg}{$pkg} = $proxy;
		974
194	for my $hook (0.. $#HOOKNAME) {	975	for my $name (@HOOKNAME) {
195	my $name = $HOOKNAME[$hook];
196
197	my $ref = $pkg->can ("on_" . lc $name)	976	if (my $ref = $pkg->can ("on_" . lc $name)) {
198	or next;	977	$proxy->enable ($name => $ref);
199		978	}
200	$invoke_cb[$hook]{$ref*1} = $ref;
201	set_should_invoke $hook, 1;
202	}	979	}
203	}	980	}
204		981
205	my $script_pkg = "script0000";	982	=item $term = new urxvt::term $envhashref, $rxvtname, [arg...]
206	my %script_pkg;
207		983
208	# load a single script into its own package, once only	984	Creates a new terminal, very similar as if you had started it with system
209	sub load_script($) {	985	C<$rxvtname, arg...>. C<$envhashref> must be a reference to a C<%ENV>-like
210	my ($path) = @_;	986	hash which defines the environment of the new terminal.
211		987
212	$script_pkg{$path} ||= do {	988	Croaks (and probably outputs an error message) if the new instance
213	my $pkg = $script_pkg++;	989	couldn't be created. Returns C<undef> if the new instance didn't
214	verbose 3, "loading script '$path' into package '$pkg'";	990	initialise perl, and the terminal object otherwise. The C<init> and
		991	C<start> hooks will be called during this call.
215		992
216	open my $fh, "<:raw", $path	993	=cut
217	or die "$path: $!";
218		994
219	eval "package $pkg; use strict; use utf8;\n"	995	sub new {
220	. "#line 1 \"$path\"\n"	996	my ($class, $env, @args) = @_;
221	. do { local $/; <$fh> }
222	or die "$path: $@";
223		997
224	register_package $pkg;	998	_new ([ map "$_=$env->{$_}", keys %$env ], @args);
225
226	$pkg
227	};
228	}	999	}
229		1000
230	load_script $_ for grep -f $_, <$LIBDIR/perl-ext/*>;	1001	=item $term->destroy
231		1002
232	=back	1003	Destroy the terminal object (close the window, free resources
		1004	etc.). Please note that @@RXVT_NAME@@ will not exit as long as any event
		1005	watchers (timers, io watchers) are still active.
233		1006
234	=head2 The C<urxvt::term> Class	1007	=item $term->exec_async ($cmd[, @args])
235		1008
236	=over 4	1009	Works like the combination of the C<fork>/C<exec> builtins, which executes
		1010	("starts") programs in the background. This function takes care of setting
		1011	the user environment before exec'ing the command (e.g. C<PATH>) and should
		1012	be preferred over explicit calls to C<exec> or C<system>.
		1013
		1014	Returns the pid of the subprocess or C<undef> on error.
		1015
		1016	=cut
		1017
		1018	sub exec_async {
		1019	my $self = shift;
		1020
		1021	my $pid = fork;
		1022
		1023	return $pid
		1024	if !defined $pid or $pid;
		1025
		1026	%ENV = %{ $self->env };
		1027
		1028	exec @_;
		1029	urxvt::_exit 255;
		1030	}
		1031
		1032	=item $isset = $term->option ($optval[, $set])
		1033
		1034	Returns true if the option specified by C<$optval> is enabled, and
		1035	optionally change it. All option values are stored by name in the hash
		1036	C<%urxvt::OPTION>. Options not enabled in this binary are not in the hash.
		1037
		1038	Here is a a likely non-exhaustive list of option names, please see the
		1039	source file F</src/optinc.h> to see the actual list:
		1040
		1041	borderLess console cursorBlink cursorUnderline hold iconic insecure
		1042	intensityStyles jumpScroll loginShell mapAlert meta8 mouseWheelScrollPage
		1043	override-redirect pastableTabs pointerBlank reverseVideo scrollBar
		1044	scrollBar_floating scrollBar_right scrollTtyKeypress scrollTtyOutput
		1045	scrollWithBuffer secondaryScreen secondaryScroll skipBuiltinGlyphs
		1046	transparent tripleclickwords utmpInhibit visualBell
237		1047
238	=item $value = $term->resource ($name[, $newval])	1048	=item $value = $term->resource ($name[, $newval])
239		1049
240	Returns the current resource value associated with a given name and	1050	Returns the current resource value associated with a given name and
241	optionally sets a new value. Setting values is most useful in the C<init>	1051	optionally sets a new value. Setting values is most useful in the C<init>
…		…
251		1061
252	Please note that resource strings will currently only be freed when the	1062	Please note that resource strings will currently only be freed when the
253	terminal is destroyed, so changing options frequently will eat memory.	1063	terminal is destroyed, so changing options frequently will eat memory.
254		1064
255	Here is a a likely non-exhaustive list of resource names, not all of which	1065	Here is a a likely non-exhaustive list of resource names, not all of which
256	are supported in every build, please see the source to see the actual	1066	are supported in every build, please see the source file F</src/rsinc.h>
257	list:	1067	to see the actual list:
258		1068
259	answerbackstring backgroundPixmap backspace_key boldFont boldItalicFont	1069	answerbackstring backgroundPixmap backspace_key boldFont boldItalicFont
260	borderLess color cursorBlink cursorUnderline cutchars delete_key	1070	borderLess color cursorBlink cursorUnderline cutchars delete_key
261	display_name embed ext_bwidth fade font geometry hold iconName	1071	display_name embed ext_bwidth fade font geometry hold iconName
262	imFont imLocale inputMethod insecure int_bwidth intensityStyles	1072	imFont imLocale inputMethod insecure int_bwidth intensityStyles
263	italicFont jumpScroll lineSpace loginShell mapAlert menu meta8	1073	italicFont jumpScroll lineSpace loginShell mapAlert meta8 modifier
264	modifier mouseWheelScrollPage name pastableTabs path pointerBlank	1074	mouseWheelScrollPage name override_redirect pastableTabs path perl_eval
		1075	perl_ext_1 perl_ext_2 perl_lib pointerBlank pointerBlankDelay
265	pointerBlankDelay preeditType print_pipe pty_fd reverseVideo saveLines	1076	preeditType print_pipe pty_fd reverseVideo saveLines scrollBar
266	scrollBar scrollBar_align scrollBar_floating scrollBar_right	1077	scrollBar_align scrollBar_floating scrollBar_right scrollBar_thickness
267	scrollBar_thickness scrollTtyKeypress scrollTtyOutput scrollWithBuffer	1078	scrollTtyKeypress scrollTtyOutput scrollWithBuffer scrollstyle
268	scrollstyle secondaryScreen secondaryScroll selectstyle shade term_name	1079	secondaryScreen secondaryScroll selectstyle shade term_name title
269	title transparent transparent_all tripleclickwords utmpInhibit	1080	transient_for transparent transparent_all tripleclickwords utmpInhibit
270	visualBell	1081	visualBell
271		1082
272	=cut	1083	=cut
273		1084
274	sub urxvt::term::resource($$;$) {	1085	sub resource($$;$) {
275	my ($self, $name) = (shift, shift);	1086	my ($self, $name) = (shift, shift);
276	unshift @_, $self, $name, ($name =~ s/\s*\+\s*(\d+)$// ? $1 : 0);	1087	unshift @_, $self, $name, ($name =~ s/\s*\+\s*(\d+)$// ? $1 : 0);
277	goto &urxvt::term::_resource;	1088	&urxvt::term::_resource
278	}	1089	}
		1090
		1091	=item $value = $term->x_resource ($pattern)
		1092
		1093	Returns the X-Resource for the given pattern, excluding the program or
		1094	class name, i.e. C<< $term->x_resource ("boldFont") >> should return the
		1095	same value as used by this instance of rxvt-unicode. Returns C<undef> if no
		1096	resource with that pattern exists.
		1097
		1098	This method should only be called during the C<on_start> hook, as there is
		1099	only one resource database per display, and later invocations might return
		1100	the wrong resources.
		1101
		1102	=item $success = $term->parse_keysym ($keysym_spec, $command_string)
		1103
		1104	Adds a keymap translation exactly as specified via a resource. See the
		1105	C<keysym> resource in the @@RXVT_NAME@@(1) manpage.
		1106
		1107	=item $rend = $term->rstyle ([$new_rstyle])
		1108
		1109	Return and optionally change the current rendition. Text that is output by
		1110	the terminal application will use this style.
		1111
		1112	=item ($row, $col) = $term->screen_cur ([$row, $col])
		1113
		1114	Return the current coordinates of the text cursor position and optionally
		1115	set it (which is usually bad as applications don't expect that).
279		1116
280	=item ($row, $col) = $term->selection_mark ([$row, $col])	1117	=item ($row, $col) = $term->selection_mark ([$row, $col])
281		1118
282	=item ($row, $col) = $term->selection_beg ([$row, $col])	1119	=item ($row, $col) = $term->selection_beg ([$row, $col])
283		1120
284	=item ($row, $col) = $term->selection_end ([$row, $col])	1121	=item ($row, $col) = $term->selection_end ([$row, $col])
285		1122
286	Return the current values of the selection mark, begin or end positions,	1123	Return the current values of the selection mark, begin or end positions,
287	and optionally set them to new values.	1124	and optionally set them to new values.
288		1125
		1126	=item $term->selection_make ($eventtime[, $rectangular])
		1127
		1128	Tries to make a selection as set by C<selection_beg> and
		1129	C<selection_end>. If C<$rectangular> is true (default: false), a
		1130	rectangular selection will be made. This is the prefered function to make
		1131	a selection.
		1132
289	=item $success = $term->selection_grab ($eventtime)	1133	=item $success = $term->selection_grab ($eventtime)
290		1134
291	Try to request the primary selection from the server (for example, as set	1135	Try to request the primary selection text from the server (for example, as
292	by the next method).	1136	set by the next method). No visual feedback will be given. This function
		1137	is mostly useful from within C<on_sel_grab> hooks.
293		1138
294	=item $oldtext = $term->selection ([$newtext])	1139	=item $oldtext = $term->selection ([$newtext])
295		1140
296	Return the current selection text and optionally replace it by C<$newtext>.	1141	Return the current selection text and optionally replace it by C<$newtext>.
297		1142
298	=item $term->scr_overlay ($x, $y, $text)	1143	=item $term->overlay_simple ($x, $y, $text)
299		1144
300	Create a simple multi-line overlay box. See the next method for details.	1145	Create a simple multi-line overlay box. See the next method for details.
301		1146
302	=cut	1147	=cut
303		1148
304	sub urxvt::term::scr_overlay {	1149	sub overlay_simple {
305	my ($self, $x, $y, $text) = @_;	1150	my ($self, $x, $y, $text) = @_;
306		1151
307	my @lines = split /\n/, $text;	1152	my @lines = split /\n/, $text;
308		1153
309	my $w = 0;	1154	my $w = List::Util::max map $self->strwidth ($_), @lines;
310	for (map urxvt::wcswidth $_, @lines) {	1155
311	$w = $_ if $w < $_;	1156	my $overlay = $self->overlay ($x, $y, $w, scalar @lines);
		1157	$overlay->set (0, $_, $lines[$_]) for 0.. $#lines;
		1158
		1159	$overlay
		1160	}
		1161
		1162	=item $term->overlay ($x, $y, $width, $height[, $rstyle[, $border]])
		1163
		1164	Create a new (empty) overlay at the given position with the given
		1165	width/height. C<$rstyle> defines the initial rendition style
		1166	(default: C<OVERLAY_RSTYLE>).
		1167
		1168	If C<$border> is C<2> (default), then a decorative border will be put
		1169	around the box.
		1170
		1171	If either C<$x> or C<$y> is negative, then this is counted from the
		1172	right/bottom side, respectively.
		1173
		1174	This method returns an urxvt::overlay object. The overlay will be visible
		1175	as long as the perl object is referenced.
		1176
		1177	The methods currently supported on C<urxvt::overlay> objects are:
		1178
		1179	=over 4
		1180
		1181	=item $overlay->set ($x, $y, $text, $rend)
		1182
		1183	Similar to C<< $term->ROW_t >> and C<< $term->ROW_r >> in that it puts
		1184	text in rxvt-unicode's special encoding and an array of rendition values
		1185	at a specific position inside the overlay.
		1186
		1187	=item $overlay->hide
		1188
		1189	If visible, hide the overlay, but do not destroy it.
		1190
		1191	=item $overlay->show
		1192
		1193	If hidden, display the overlay again.
		1194
		1195	=back
		1196
		1197	=item $popup = $term->popup ($event)
		1198
		1199	Creates a new C<urxvt::popup> object that implements a popup menu. The
		1200	C<$event> I<must> be the event causing the menu to pop up (a button event,
		1201	currently).
		1202
		1203	=cut
		1204
		1205	sub popup {
		1206	my ($self, $event) = @_;
		1207
		1208	$self->grab ($event->{time}, 1)
		1209	or return;
		1210
		1211	my $popup = bless {
		1212	term => $self,
		1213	event => $event,
		1214	}, urxvt::popup::;
		1215
		1216	Scalar::Util::weaken $popup->{term};
		1217
		1218	$self->{_destroy}{$popup} = urxvt::destroy_hook { $popup->{popup}->destroy };
		1219	Scalar::Util::weaken $self->{_destroy}{$popup};
		1220
		1221	$popup
		1222	}
		1223
		1224	=item $cellwidth = $term->strwidth ($string)
		1225
		1226	Returns the number of screen-cells this string would need. Correctly
		1227	accounts for wide and combining characters.
		1228
		1229	=item $octets = $term->locale_encode ($string)
		1230
		1231	Convert the given text string into the corresponding locale encoding.
		1232
		1233	=item $string = $term->locale_decode ($octets)
		1234
		1235	Convert the given locale-encoded octets into a perl string.
		1236
		1237	=item $term->scr_xor_span ($beg_row, $beg_col, $end_row, $end_col[, $rstyle])
		1238
		1239	XORs the rendition values in the given span with the provided value
		1240	(default: C<RS_RVid>), which I<MUST NOT> contain font styles. Useful in
		1241	refresh hooks to provide effects similar to the selection.
		1242
		1243	=item $term->scr_xor_rect ($beg_row, $beg_col, $end_row, $end_col[, $rstyle1[, $rstyle2]])
		1244
		1245	Similar to C<scr_xor_span>, but xors a rectangle instead. Trailing
		1246	whitespace will additionally be xored with the C<$rstyle2>, which defaults
		1247	to C<RS_RVid | RS_Uline>, which removes reverse video again and underlines
		1248	it instead. Both styles I<MUST NOT> contain font styles.
		1249
		1250	=item $term->scr_bell
		1251
		1252	Ring the bell!
		1253
		1254	=item $term->scr_add_lines ($string)
		1255
		1256	Write the given text string to the screen, as if output by the application
		1257	running inside the terminal. It may not contain command sequences (escape
		1258	codes), but is free to use line feeds, carriage returns and tabs. The
		1259	string is a normal text string, not in locale-dependent encoding.
		1260
		1261	Normally its not a good idea to use this function, as programs might be
		1262	confused by changes in cursor position or scrolling. Its useful inside a
		1263	C<on_add_lines> hook, though.
		1264
		1265	=item $term->cmd_parse ($octets)
		1266
		1267	Similar to C<scr_add_lines>, but the argument must be in the
		1268	locale-specific encoding of the terminal and can contain command sequences
		1269	(escape codes) that will be interpreted.
		1270
		1271	=item $term->tt_write ($octets)
		1272
		1273	Write the octets given in C<$data> to the tty (i.e. as program input). To
		1274	pass characters instead of octets, you should convert your strings first
		1275	to the locale-specific encoding using C<< $term->locale_encode >>.
		1276
		1277	=item $old_events = $term->pty_ev_events ([$new_events])
		1278
		1279	Replaces the event mask of the pty watcher by the given event mask. Can
		1280	be used to suppress input and output handling to the pty/tty. See the
		1281	description of C<< urxvt::timer->events >>. Make sure to always restore
		1282	the previous value.
		1283
		1284	=item $windowid = $term->parent
		1285
		1286	Return the window id of the toplevel window.
		1287
		1288	=item $windowid = $term->vt
		1289
		1290	Return the window id of the terminal window.
		1291
		1292	=item $term->vt_emask_add ($x_event_mask)
		1293
		1294	Adds the specified events to the vt event mask. Useful e.g. when you want
		1295	to receive pointer events all the times:
		1296
		1297	$term->vt_emask_add (urxvt::PointerMotionMask);
		1298
		1299	=item $window_width = $term->width
		1300
		1301	=item $window_height = $term->height
		1302
		1303	=item $font_width = $term->fwidth
		1304
		1305	=item $font_height = $term->fheight
		1306
		1307	=item $font_ascent = $term->fbase
		1308
		1309	=item $terminal_rows = $term->nrow
		1310
		1311	=item $terminal_columns = $term->ncol
		1312
		1313	=item $has_focus = $term->focus
		1314
		1315	=item $is_mapped = $term->mapped
		1316
		1317	=item $max_scrollback = $term->saveLines
		1318
		1319	=item $nrow_plus_saveLines = $term->total_rows
		1320
		1321	=item $topmost_scrollback_row = $term->top_row
		1322
		1323	Return various integers describing terminal characteristics.
		1324
		1325	=item $x_display = $term->display_id
		1326
		1327	Return the DISPLAY used by rxvt-unicode.
		1328
		1329	=item $lc_ctype = $term->locale
		1330
		1331	Returns the LC_CTYPE category string used by this rxvt-unicode.
		1332
		1333	=item $env = $term->env
		1334
		1335	Returns a copy of the environment in effect for the terminal as a hashref
		1336	similar to C<\%ENV>.
		1337
		1338	=cut
		1339
		1340	sub env {
		1341	if (my $env = $_[0]->_env) {
		1342	+{ map /^([^=]+)(?:=(.*))?$/s && ($1 => $2), @$env }
		1343	} else {
		1344	+{ %ENV }
312	}	1345	}
313
314	$self->scr_overlay_new ($x, $y, $w, scalar @lines);
315	$self->scr_overlay_set (0, $_, $lines[$_]) for 0.. $#lines;
316	}	1346	}
317		1347
318	=item $term->scr_overlay_new ($x, $y, $width, $height)	1348	=item $modifiermask = $term->ModLevel3Mask
319		1349
320	Create a new (empty) overlay at the given position with the given	1350	=item $modifiermask = $term->ModMetaMask
321	width/height. A border will be put around the box. If either C<$x> or
322	C<$y> is negative, then this is counted from the right/bottom side,
323	respectively.
324		1351
325	=item $term->scr_overlay_off	1352	=item $modifiermask = $term->ModNumLockMask
326		1353
327	Switch the overlay off again.	1354	Return the modifier masks corresponding to the "ISO Level 3 Shift" (often
		1355	AltGr), the meta key (often Alt) and the num lock key, if applicable.
328		1356
329	=item $term->scr_overlay_set_char ($x, $y, $char, $rend = OVERLAY_RSTYLE)	1357	=item $view_start = $term->view_start ([$newvalue])
330		1358
331	Put a single character (specified numerically) at the given overlay	1359	Returns the row number of the topmost displayed line. Maximum value is
332	position.	1360	C<0>, which displays the normal terminal contents. Lower values scroll
		1361	this many lines into the scrollback buffer.
333		1362
334	=item $term->scr_overlay_set ($x, $y, $text)	1363	=item $term->want_refresh
335		1364
336	Write a string at the given position into the overlay.	1365	Requests a screen refresh. At the next opportunity, rxvt-unicode will
		1366	compare the on-screen display with its stored representation. If they
		1367	differ, it redraws the differences.
		1368
		1369	Used after changing terminal contents to display them.
		1370
		1371	=item $text = $term->ROW_t ($row_number[, $new_text[, $start_col]])
		1372
		1373	Returns the text of the entire row with number C<$row_number>. Row C<0>
		1374	is the topmost terminal line, row C<< $term->$ncol-1 >> is the bottommost
		1375	terminal line. The scrollback buffer starts at line C<-1> and extends to
		1376	line C<< -$term->nsaved >>. Nothing will be returned if a nonexistent line
		1377	is requested.
		1378
		1379	If C<$new_text> is specified, it will replace characters in the current
		1380	line, starting at column C<$start_col> (default C<0>), which is useful
		1381	to replace only parts of a line. The font index in the rendition will
		1382	automatically be updated.
		1383
		1384	C<$text> is in a special encoding: tabs and wide characters that use more
		1385	than one cell when displayed are padded with urxvt::NOCHAR characters
		1386	(C<chr 65535>). Characters with combining characters and other characters
		1387	that do not fit into the normal tetx encoding will be replaced with
		1388	characters in the private use area.
		1389
		1390	You have to obey this encoding when changing text. The advantage is
		1391	that C<substr> and similar functions work on screen cells and not on
		1392	characters.
		1393
		1394	The methods C<< $term->special_encode >> and C<< $term->special_decode >>
		1395	can be used to convert normal strings into this encoding and vice versa.
		1396
		1397	=item $rend = $term->ROW_r ($row_number[, $new_rend[, $start_col]])
		1398
		1399	Like C<< $term->ROW_t >>, but returns an arrayref with rendition
		1400	bitsets. Rendition bitsets contain information about colour, font, font
		1401	styles and similar information. See also C<< $term->ROW_t >>.
		1402
		1403	When setting rendition, the font mask will be ignored.
		1404
		1405	See the section on RENDITION, above.
		1406
		1407	=item $length = $term->ROW_l ($row_number[, $new_length])
		1408
		1409	Returns the number of screen cells that are in use ("the line
		1410	length"). Unlike the urxvt core, this returns C<< $term->ncol >> if the
		1411	line is joined with the following one.
		1412
		1413	=item $bool = $term->is_longer ($row_number)
		1414
		1415	Returns true if the row is part of a multiple-row logical "line" (i.e.
		1416	joined with the following row), which means all characters are in use
		1417	and it is continued on the next row (and possibly a continuation of the
		1418	previous row(s)).
		1419
		1420	=item $line = $term->line ($row_number)
		1421
		1422	Create and return a new C<urxvt::line> object that stores information
		1423	about the logical line that row C<$row_number> is part of. It supports the
		1424	following methods:
		1425
		1426	=over 4
		1427
		1428	=item $text = $line->t ([$new_text])
		1429
		1430	Returns or replaces the full text of the line, similar to C<ROW_t>
		1431
		1432	=item $rend = $line->r ([$new_rend])
		1433
		1434	Returns or replaces the full rendition array of the line, similar to C<ROW_r>
		1435
		1436	=item $length = $line->l
		1437
		1438	Returns the length of the line in cells, similar to C<ROW_l>.
		1439
		1440	=item $rownum = $line->beg
		1441
		1442	=item $rownum = $line->end
		1443
		1444	Return the row number of the first/last row of the line, respectively.
		1445
		1446	=item $offset = $line->offset_of ($row, $col)
		1447
		1448	Returns the character offset of the given row|col pair within the logical
		1449	line. Works for rows outside the line, too, and returns corresponding
		1450	offsets outside the string.
		1451
		1452	=item ($row, $col) = $line->coord_of ($offset)
		1453
		1454	Translates a string offset into terminal coordinates again.
337		1455
338	=back	1456	=back
		1457
		1458	=cut
		1459
		1460	sub line {
		1461	my ($self, $row) = @_;
		1462
		1463	my $maxrow = $self->nrow - 1;
		1464
		1465	my ($beg, $end) = ($row, $row);
		1466
		1467	--$beg while $self->ROW_is_longer ($beg - 1);
		1468	++$end while $self->ROW_is_longer ($end) && $end < $maxrow;
		1469
		1470	bless {
		1471	term => $self,
		1472	beg => $beg,
		1473	end => $end,
		1474	ncol => $self->ncol,
		1475	len => ($end - $beg) * $self->ncol + $self->ROW_l ($end),
		1476	}, urxvt::line::
		1477	}
		1478
		1479	sub urxvt::line::t {
		1480	my ($self) = @_;
		1481
		1482	if (@_ > 1)
		1483	{
		1484	$self->{term}->ROW_t ($_, $_[1], 0, ($_ - $self->{beg}) * $self->{ncol}, $self->{ncol})
		1485	for $self->{beg} .. $self->{end};
		1486	}
		1487
		1488	defined wantarray &&
		1489	substr +(join "", map $self->{term}->ROW_t ($_), $self->{beg} .. $self->{end}),
		1490	0, $self->{len}
		1491	}
		1492
		1493	sub urxvt::line::r {
		1494	my ($self) = @_;
		1495
		1496	if (@_ > 1)
		1497	{
		1498	$self->{term}->ROW_r ($_, $_[1], 0, ($_ - $self->{beg}) * $self->{ncol}, $self->{ncol})
		1499	for $self->{beg} .. $self->{end};
		1500	}
		1501
		1502	if (defined wantarray) {
		1503	my $rend = [
		1504	map @{ $self->{term}->ROW_r ($_) }, $self->{beg} .. $self->{end}
		1505	];
		1506	$#$rend = $self->{len} - 1;
		1507	return $rend;
		1508	}
		1509
		1510	()
		1511	}
		1512
		1513	sub urxvt::line::beg { $_[0]{beg} }
		1514	sub urxvt::line::end { $_[0]{end} }
		1515	sub urxvt::line::l { $_[0]{len} }
		1516
		1517	sub urxvt::line::offset_of {
		1518	my ($self, $row, $col) = @_;
		1519
		1520	($row - $self->{beg}) * $self->{ncol} + $col
		1521	}
		1522
		1523	sub urxvt::line::coord_of {
		1524	my ($self, $offset) = @_;
		1525
		1526	use integer;
		1527
		1528	(
		1529	$offset / $self->{ncol} + $self->{beg},
		1530	$offset % $self->{ncol}
		1531	)
		1532	}
		1533
		1534	=item $text = $term->special_encode $string
		1535
		1536	Converts a perl string into the special encoding used by rxvt-unicode,
		1537	where one character corresponds to one screen cell. See
		1538	C<< $term->ROW_t >> for details.
		1539
		1540	=item $string = $term->special_decode $text
		1541
		1542	Converts rxvt-unicodes text reprsentation into a perl string. See
		1543	C<< $term->ROW_t >> for details.
		1544
		1545	=item $success = $term->grab_button ($button, $modifiermask)
		1546
		1547	Registers a synchronous button grab. See the XGrabButton manpage.
		1548
		1549	=item $success = $term->grab ($eventtime[, $sync])
		1550
		1551	Calls XGrabPointer and XGrabKeyboard in asynchronous (default) or
		1552	synchronous (C<$sync> is true). Also remembers the grab timestampe.
		1553
		1554	=item $term->allow_events_async
		1555
		1556	Calls XAllowEvents with AsyncBoth for the most recent grab.
		1557
		1558	=item $term->allow_events_sync
		1559
		1560	Calls XAllowEvents with SyncBoth for the most recent grab.
		1561
		1562	=item $term->allow_events_replay
		1563
		1564	Calls XAllowEvents with both ReplayPointer and ReplayKeyboard for the most
		1565	recent grab.
		1566
		1567	=item $term->ungrab
		1568
		1569	Calls XUngrab for the most recent grab. Is called automatically on
		1570	evaluation errors, as it is better to lose the grab in the error case as
		1571	the session.
		1572
		1573	=back
		1574
		1575	=cut
		1576
		1577	package urxvt::popup;
		1578
		1579	=head2 The C<urxvt::popup> Class
		1580
		1581	=over 4
		1582
		1583	=cut
		1584
		1585	sub add_item {
		1586	my ($self, $item) = @_;
		1587
		1588	$item->{rend}{normal} = "\x1b[0;30;47m" unless exists $item->{rend}{normal};
		1589	$item->{rend}{hover} = "\x1b[0;30;46m" unless exists $item->{rend}{hover};
		1590	$item->{rend}{active} = "\x1b[m" unless exists $item->{rend}{active};
		1591
		1592	$item->{render} ||= sub { $_[0]{text} };
		1593
		1594	push @{ $self->{item} }, $item;
		1595	}
		1596
		1597	=item $popup->add_title ($title)
		1598
		1599	Adds a non-clickable title to the popup.
		1600
		1601	=cut
		1602
		1603	sub add_title {
		1604	my ($self, $title) = @_;
		1605
		1606	$self->add_item ({
		1607	rend => { normal => "\x1b[38;5;11;44m", hover => "\x1b[38;5;11;44m", active => "\x1b[38;5;11;44m" },
		1608	text => $title,
		1609	activate => sub { },
		1610	});
		1611	}
		1612
		1613	=item $popup->add_separator ([$sepchr])
		1614
		1615	Creates a separator, optionally using the character given as C<$sepchr>.
		1616
		1617	=cut
		1618
		1619	sub add_separator {
		1620	my ($self, $sep) = @_;
		1621
		1622	$sep ||= "=";
		1623
		1624	$self->add_item ({
		1625	rend => { normal => "\x1b[0;30;47m", hover => "\x1b[0;30;47m", active => "\x1b[0;30;47m" },
		1626	text => "",
		1627	render => sub { $sep x $self->{term}->ncol },
		1628	activate => sub { },
		1629	});
		1630	}
		1631
		1632	=item $popup->add_button ($text, $cb)
		1633
		1634	Adds a clickable button to the popup. C<$cb> is called whenever it is
		1635	selected.
		1636
		1637	=cut
		1638
		1639	sub add_button {
		1640	my ($self, $text, $cb) = @_;
		1641
		1642	$self->add_item ({ type => "button", text => $text, activate => $cb});
		1643	}
		1644
		1645	=item $popup->add_toggle ($text, $cb, $initial_value)
		1646
		1647	Adds a toggle/checkbox item to the popup. Teh callback gets called
		1648	whenever it gets toggled, with a boolean indicating its value as its first
		1649	argument.
		1650
		1651	=cut
		1652
		1653	sub add_toggle {
		1654	my ($self, $text, $cb, $value) = @_;
		1655
		1656	my $item; $item = {
		1657	type => "button",
		1658	text => " $text",
		1659	value => $value,
		1660	render => sub { ($_[0]{value} ? "* " : " ") . $text },
		1661	activate => sub { $cb->($_[1]{value} = !$_[1]{value}); },
		1662	};
		1663
		1664	$self->add_item ($item);
		1665	}
		1666
		1667	=item $popup->show
		1668
		1669	Displays the popup (which is initially hidden).
		1670
		1671	=cut
		1672
		1673	sub show {
		1674	my ($self) = @_;
		1675
		1676	local $urxvt::popup::self = $self;
		1677
		1678	my $env = $self->{term}->env;
		1679	# we can't hope to reproduce the locale algorithm, so nuke LC_ALL and set LC_CTYPE.
		1680	delete $env->{LC_ALL};
		1681	$env->{LC_CTYPE} = $self->{term}->locale;
		1682
		1683	urxvt::term->new ($env, "popup",
		1684	"--perl-lib" => "", "--perl-ext-common" => "",
		1685	"-pty-fd" => -1, "-sl" => 0,
		1686	"-b" => 1, "-bd" => "grey80", "-bl", "-override-redirect",
		1687	"--transient-for" => $self->{term}->parent,
		1688	"-display" => $self->{term}->display_id,
		1689	"-pe" => "urxvt-popup")
		1690	or die "unable to create popup window\n";
		1691	}
		1692
		1693	sub DESTROY {
		1694	my ($self) = @_;
		1695
		1696	delete $self->{term}{_destroy}{$self};
		1697	$self->{term}->ungrab;
		1698	}
		1699
		1700	=back
		1701
		1702	=cut
		1703
		1704	package urxvt::watcher;
		1705
		1706	@urxvt::timer::ISA = __PACKAGE__;
		1707	@urxvt::iow::ISA = __PACKAGE__;
		1708	@urxvt::pw::ISA = __PACKAGE__;
		1709	@urxvt::iw::ISA = __PACKAGE__;
339		1710
340	=head2 The C<urxvt::timer> Class	1711	=head2 The C<urxvt::timer> Class
341		1712
342	This class implements timer watchers/events. Time is represented as a	1713	This class implements timer watchers/events. Time is represented as a
343	fractional number of seconds since the epoch. Example:	1714	fractional number of seconds since the epoch. Example:
344		1715
345	# create a digital clock display in upper right corner	1716	$term->{overlay} = $term->overlay (-1, 0, 8, 1, urxvt::OVERLAY_RSTYLE, 0);
346	$term->{timer} = urxvt::timer	1717	$term->{timer} = urxvt::timer
347	->new	1718	->new
348	->start (urxvt::NOW)	1719	->interval (1)
349	->cb (sub {	1720	->cb (sub {
350	my ($timer) = @_;
351	my $time = $timer->at;
352	$timer->start ($time + 1);
353	$self->scr_overlay (-1, 0,	1721	$term->{overlay}->set (0, 0,
354	POSIX::strftime "%H:%M:%S", localtime $time);	1722	sprintf "%2d:%02d:%02d", (localtime urxvt::NOW)[2,1,0]);
355	});	1723	});
356		1724
357	=over 4	1725	=over 4
358		1726
359	=item $timer = new urxvt::timer	1727	=item $timer = new urxvt::timer
360		1728
361	Create a new timer object in stopped state.	1729	Create a new timer object in started state. It is scheduled to fire
		1730	immediately.
362		1731
363	=item $timer = $timer->cb (sub { my ($timer) = @_; ... })	1732	=item $timer = $timer->cb (sub { my ($timer) = @_; ... })
364		1733
365	Set the callback to be called when the timer triggers.	1734	Set the callback to be called when the timer triggers.
366		1735
…		…
370		1739
371	=item $timer = $timer->set ($tstamp)	1740	=item $timer = $timer->set ($tstamp)
372		1741
373	Set the time the event is generated to $tstamp.	1742	Set the time the event is generated to $tstamp.
374		1743
		1744	=item $timer = $timer->interval ($interval)
		1745
		1746	Normally (and when C<$interval> is C<0>), the timer will automatically
		1747	stop after it has fired once. If C<$interval> is non-zero, then the timer
		1748	is automatically rescheduled at the given intervals.
		1749
375	=item $timer = $timer->start	1750	=item $timer = $timer->start
376		1751
377	Start the timer.	1752	Start the timer.
378		1753
379	=item $timer = $timer->start ($tstamp)	1754	=item $timer = $timer->start ($tstamp)
380		1755
381	Set the event trigger time to C<$tstamp> and start the timer.	1756	Set the event trigger time to C<$tstamp> and start the timer.
		1757
		1758	=item $timer = $timer->after ($delay)
		1759
		1760	Like C<start>, but sets the expiry timer to c<urxvt::NOW + $delay>.
382		1761
383	=item $timer = $timer->stop	1762	=item $timer = $timer->stop
384		1763
385	Stop the timer.	1764	Stop the timer.
386		1765
…		…
392		1771
393	$term->{socket} = ...	1772	$term->{socket} = ...
394	$term->{iow} = urxvt::iow	1773	$term->{iow} = urxvt::iow
395	->new	1774	->new
396	->fd (fileno $term->{socket})	1775	->fd (fileno $term->{socket})
397	->events (1) # wait for read data	1776	->events (urxvt::EVENT_READ)
398	->start	1777	->start
399	->cb (sub {	1778	->cb (sub {
400	my ($iow, $revents) = @_;	1779	my ($iow, $revents) = @_;
401	# $revents must be 1 here, no need to check	1780	# $revents must be 1 here, no need to check
402	sysread $term->{socket}, my $buf, 8192	1781	sysread $term->{socket}, my $buf, 8192
…		…
419		1798
420	Set the filedescriptor (not handle) to watch.	1799	Set the filedescriptor (not handle) to watch.
421		1800
422	=item $iow = $iow->events ($eventmask)	1801	=item $iow = $iow->events ($eventmask)
423		1802
424	Set the event mask to watch. Bit #0 (value C<1>) enables watching for read	1803	Set the event mask to watch. The only allowed values are
425	data, Bit #1 (value C<2>) enables watching for write data.	1804	C<urxvt::EVENT_READ> and C<urxvt::EVENT_WRITE>, which might be ORed
		1805	together, or C<urxvt::EVENT_NONE>.
426		1806
427	=item $iow = $iow->start	1807	=item $iow = $iow->start
428		1808
429	Start watching for requested events on the given handle.	1809	Start watching for requested events on the given handle.
430		1810
431	=item $iow = $iow->stop	1811	=item $iow = $iow->stop
432		1812
433	Stop watching for events on the given filehandle.	1813	Stop watching for events on the given filehandle.
		1814
		1815	=back
		1816
		1817	=head2 The C<urxvt::iw> Class
		1818
		1819	This class implements idle watchers, that get called automatically when
		1820	the process is idle. They should return as fast as possible, after doing
		1821	some useful work.
		1822
		1823	=over 4
		1824
		1825	=item $iw = new urxvt::iw
		1826
		1827	Create a new idle watcher object in stopped state.
		1828
		1829	=item $iw = $iw->cb (sub { my ($iw) = @_; ... })
		1830
		1831	Set the callback to be called when the watcher triggers.
		1832
		1833	=item $timer = $timer->start
		1834
		1835	Start the watcher.
		1836
		1837	=item $timer = $timer->stop
		1838
		1839	Stop the watcher.
		1840
		1841	=back
		1842
		1843	=head2 The C<urxvt::pw> Class
		1844
		1845	This class implements process watchers. They create an event whenever a
		1846	process exits, after which they stop automatically.
		1847
		1848	my $pid = fork;
		1849	...
		1850	$term->{pw} = urxvt::pw
		1851	->new
		1852	->start ($pid)
		1853	->cb (sub {
		1854	my ($pw, $exit_status) = @_;
		1855	...
		1856	});
		1857
		1858	=over 4
		1859
		1860	=item $pw = new urxvt::pw
		1861
		1862	Create a new process watcher in stopped state.
		1863
		1864	=item $pw = $pw->cb (sub { my ($pw, $exit_status) = @_; ... })
		1865
		1866	Set the callback to be called when the timer triggers.
		1867
		1868	=item $pw = $timer->start ($pid)
		1869
		1870	Tells the wqtcher to start watching for process C<$pid>.
		1871
		1872	=item $pw = $pw->stop
		1873
		1874	Stop the watcher.
434		1875
435	=back	1876	=back
436		1877
437	=head1 ENVIRONMENT	1878	=head1 ENVIRONMENT
438		1879
…		…
441	This variable controls the verbosity level of the perl extension. Higher	1882	This variable controls the verbosity level of the perl extension. Higher
442	numbers indicate more verbose output.	1883	numbers indicate more verbose output.
443		1884
444	=over 4	1885	=over 4
445		1886
446	=item 0 - only fatal messages	1887	=item == 0 - fatal messages
447		1888
448	=item 3 - script loading and management	1889	=item >= 3 - script loading and management
449		1890
450	=item 10 - all events received	1891	=item >=10 - all called hooks
		1892
		1893	=item >=11 - hook reutrn values
451		1894
452	=back	1895	=back
453		1896
454	=head1 AUTHOR	1897	=head1 AUTHOR
455		1898

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