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Revision 1.22 by root, Tue Jan 3 19:10:54 2006 UTC vs.
Revision 1.119 by root, Fri Jan 20 18:59:31 2006 UTC

…		…
17		17
18	@@RXVT_NAME@@ --perl-lib $HOME -pe grab_test	18	@@RXVT_NAME@@ --perl-lib $HOME -pe grab_test
19		19
20	=head1 DESCRIPTION	20	=head1 DESCRIPTION
21		21
22	Everytime a terminal object gets created, scripts specified via the	22	Everytime a terminal object gets created, extension scripts specified via
23	C<perl> resource are loaded and associated with it.	23	the C<perl> resource are loaded and associated with it.
24		24
25	Scripts are compiled in a 'use strict' and 'use utf8' environment, and	25	Scripts are compiled in a 'use strict' and 'use utf8' environment, and
26	thus must be encoded as UTF-8.	26	thus must be encoded as UTF-8.
27		27
28	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
29	scripts will be shared (but not enabled) for all terminals.	29	scripts will be shared (but not enabled) for all terminals.
30		30
31	=head2 Prepackaged Extensions	31	=head1 PREPACKAGED EXTENSIONS
32		32
33	This section describes the extensiosn delivered with this version. You can	33	This section describes the extensions delivered with this release. You can
34	find them in F<@@RXVT_LIBDIR@@/urxvt/perl/>.	34	find them in F<@@RXVT_LIBDIR@@/urxvt/perl/>.
35		35
36	You can activate them like this:	36	You can activate them like this:
37		37
38	@@RXVT_NAME@@ -pe <extensionname>	38	@@RXVT_NAME@@ -pe <extensionname>
39		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
40	=over 4	44	=over 4
41		45
42	=item selection	46	=item selection (enabled by default)
43		47
44	Intelligent selection. This etxension tries to be more intelligent when the user	48	(More) intelligent selection. This extension tries to be more intelligent
45	extends selections (double-click).	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>.
46		53
47	It also offers the following bindable event:	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:
48		76
49	=over 4	77	=over 4
50		78
51	=item rot13	79	=item rot13
52		80
53	Rot-13 the selection when activated. Used via keyboard trigger:	81	Rot-13 the selection when activated. Used via keyboard trigger:
54		82
55	URxvt.keysym.C-M-r: perl:selection:rot13	83	URxvt.keysym.C-M-r: perl:selection:rot13
56		84
57	=back	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.
58		198
59	=item digital-clock	199	=item digital-clock
60		200
61	Displays a digital clock using the built-in overlay.	201	Displays a digital clock using the built-in overlay.
62		202
…		…
64		204
65	Displays a very simple digital clock in the upper right corner of the	205	Displays a very simple digital clock in the upper right corner of the
66	window. Illustrates overwriting the refresh callbacks to create your own	206	window. Illustrates overwriting the refresh callbacks to create your own
67	overlays or changes.	207	overlays or changes.
68		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
69	=back	238	=back
		239
		240	=head1 API DOCUMENTATION
70		241
71	=head2 General API Considerations	242	=head2 General API Considerations
72		243
73	All objects (such as terminals, time watchers etc.) are typical	244	All objects (such as terminals, time watchers etc.) are typical
74	reference-to-hash objects. The hash can be used to store anything you	245	reference-to-hash objects. The hash can be used to store anything you
75	like. All members starting with an underscore (such as C<_ptr> or	246	like. All members starting with an underscore (such as C<_ptr> or
76	C<_hook>) are reserved for internal uses and must not be accessed or	247	C<_hook>) are reserved for internal uses and B<MUST NOT> be accessed or
77	modified).	248	modified).
78		249
79	When objects are destroyed on the C++ side, the perl object hashes are	250	When objects are destroyed on the C++ side, the perl object hashes are
80	emptied, so its best to store related objects such as time watchers and	251	emptied, so its best to store related objects such as time watchers and
81	the like inside the terminal object so they get destroyed as soon as the	252	the like inside the terminal object so they get destroyed as soon as the
82	terminal is destroyed.	253	terminal is destroyed.
83		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
84	=head2 Hooks	311	=head2 Hooks
85		312
86	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
87	whenever the relevant event happens.	314	called whenever the relevant event happens.
88		315
89	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
90	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
91	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.
92		322
93	When in doubt, return a false value (preferably C<()>).	323	I<< When in doubt, return a false value (preferably C<()>). >>
94		324
95	=over 4	325	=over 4
96		326
97	=item on_init $term	327	=item on_init $term
98		328
99	Called after a new terminal object has been initialized, but before	329	Called after a new terminal object has been initialized, but before
100	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.
101		346
102	=item on_reset $term	347	=item on_reset $term
103		348
104	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
105	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
106	variables.	351	variables.
107		352
108	=item on_start $term	353	=item on_child_start $term, $pid
109		354
110	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.
111	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>.
112		361
113	=item on_sel_make $term, $eventtime	362	=item on_sel_make $term, $eventtime
114		363
115	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
116	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
…		…
130	=item on_sel_extend $term	379	=item on_sel_extend $term
131		380
132	Called whenever the user tries to extend the selection (e.g. with a double	381	Called whenever the user tries to extend the selection (e.g. with a double
133	click) and is either supposed to return false (normal operation), or	382	click) and is either supposed to return false (normal operation), or
134	should extend the selection itelf and return true to suppress the built-in	383	should extend the selection itelf and return true to suppress the built-in
135	processing.	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.
136		387
137	See the F<selection> example extension.	388	See the F<selection> example extension.
138
139	=item on_focus_in $term
140
141	Called whenever the window gets the keyboard focus, before urxvt does
142	focus in processing.
143
144	=item on_focus_out $term
145
146	Called wheneever the window loses keyboard focus, before urxvt does focus
147	out processing.
148		389
149	=item on_view_change $term, $offset	390	=item on_view_change $term, $offset
150		391
151	Called whenever the view offset changes, i..e the user or program	392	Called whenever the view offset changes, i..e the user or program
152	scrolls. Offset C<0> means display the normal terminal, positive values	393	scrolls. Offset C<0> means display the normal terminal, positive values
…		…
160		401
161	It is called before lines are scrolled out (so rows 0 .. min ($lines - 1,	402	It is called before lines are scrolled out (so rows 0 .. min ($lines - 1,
162	$nrow - 1) represent the lines to be scrolled out). C<$saved> is the total	403	$nrow - 1) represent the lines to be scrolled out). C<$saved> is the total
163	number of lines that will be in the scrollback buffer.	404	number of lines that will be in the scrollback buffer.
164		405
165	=item on_tty_activity $term *NYI*	406	=item on_osc_seq $term, $string
166		407
167	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.
168		445
169	=item on_refresh_begin $term	446	=item on_refresh_begin $term
170		447
171	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
172	or similar effects by modify terminal contents in refresh_begin, and	449	or similar effects by modify terminal contents in refresh_begin, and
…		…
181		458
182	Called whenever the user presses a key combination that has a	459	Called whenever the user presses a key combination that has a
183	C<perl:string> action bound to it (see description of the B<keysym>	460	C<perl:string> action bound to it (see description of the B<keysym>
184	resource in the @@RXVT_NAME@@(1) manpage).	461	resource in the @@RXVT_NAME@@(1) manpage).
185		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
186	=back	581	=back
187		582
188	=head2 Functions in the C<urxvt> Package	583	=head2 Functions in the C<urxvt> Package
189		584
190	=over 4	585	=over 4
…		…
202	that calls this function.	597	that calls this function.
203		598
204	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
205	correct place, e.g. on stderr of the connecting urxvtc client.	600	correct place, e.g. on stderr of the connecting urxvtc client.
206		601
		602	Messages have a size limit of 1023 bytes currently.
		603
207	=item $time = urxvt::NOW	604	=item $time = urxvt::NOW
208		605
209	Returns the "current time" (as per the event loop).	606	Returns the "current time" (as per the event loop).
		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.
210		631
211	=back	632	=back
212		633
213	=head2 RENDITION	634	=head2 RENDITION
214		635
…		…
241		662
242	=item $background = urxvt::GET_BASEBG $rend	663	=item $background = urxvt::GET_BASEBG $rend
243		664
244	Return the foreground/background colour index, respectively.	665	Return the foreground/background colour index, respectively.
245		666
246	=item $rend = urxvt::SET_FGCOLOR ($rend, $new_colour)	667	=item $rend = urxvt::SET_FGCOLOR $rend, $new_colour
247		668
248	=item $rend = urxvt::SET_BGCOLOR ($rend, $new_colour)	669	=item $rend = urxvt::SET_BGCOLOR $rend, $new_colour
249		670
250	Replace the foreground/background colour in the rendition mask with the	671	Replace the foreground/background colour in the rendition mask with the
251	specified one.	672	specified one.
252		673
253	=item $value = urxvt::GET_CUSTOM ($rend)	674	=item $value = urxvt::GET_CUSTOM $rend
254		675
255	Return the "custom" value: Every rendition has 5 bits for use by	676	Return the "custom" value: Every rendition has 5 bits for use by
256	extensions. They can be set and changed as you like and are initially	677	extensions. They can be set and changed as you like and are initially
257	zero.	678	zero.
258		679
259	=item $rend = urxvt::SET_CUSTOM ($rend, $new_value)	680	=item $rend = urxvt::SET_CUSTOM $rend, $new_value
260		681
261	Change the custom value.	682	Change the custom value.
262		683
263	=back	684	=back
264		685
265	=cut	686	=cut
266		687
267	package urxvt;
268
269	use strict;
270
271	our $term;
272	our @HOOKNAME;
273	our $LIBDIR;
274
275	BEGIN {	688	BEGIN {
276	urxvt->bootstrap;
277
278	# overwrite perl's warn	689	# overwrite perl's warn
279	*CORE::GLOBAL::warn = sub {	690	*CORE::GLOBAL::warn = sub {
280	my $msg = join "", @_;	691	my $msg = join "", @_;
281	$msg .= "\n"	692	$msg .= "\n"
282	unless $msg =~ /\n$/;	693	unless $msg =~ /\n$/;
283	urxvt::warn ($msg);	694	urxvt::warn ($msg);
284	};	695	};
285	}	696	}
286		697
287	my @hook_count;
288	my $verbosity = $ENV{URXVT_PERL_VERBOSITY};	698	my $verbosity = $ENV{URXVT_PERL_VERBOSITY};
289		699
290	sub verbose {	700	sub verbose {
291	my ($level, $msg) = @_;	701	my ($level, $msg) = @_;
292	warn "$msg\n" if $level <= $verbosity;	702	warn "$msg\n" if $level <= $verbosity;
293	}	703	}
294		704
295	# find on_xxx subs in the package and register them	705	my %extension_pkg;
296	# as hooks
297	sub register_package($) {
298	my ($pkg) = @_;
299
300	for my $htype (0.. $#HOOKNAME) {
301	my $name = $HOOKNAME[$htype];
302
303	my $ref = $pkg->can ("on_" . lc $name)
304	or next;
305
306	$term->{_hook}[$htype]{$ref*1} = $ref;
307	$hook_count[$htype]++
308	or set_should_invoke $htype, 1;
309	}
310	}
311
312	my $script_pkg = "script0000";
313	my %script_pkg;
314		706
315	# load a single script into its own package, once only	707	# load a single script into its own package, once only
316	sub script_package($) {	708	sub extension_package($) {
317	my ($path) = @_;	709	my ($path) = @_;
318		710
319	$script_pkg{$path} ||= do {	711	$extension_pkg{$path} ||= do {
320	my $pkg = "urxvt::" . ($script_pkg++);	712	$path =~ /([^\/\\]+)$/;
		713	my $pkg = $1;
		714	$pkg =~ s/[^[:word:]]/_/g;
		715	$pkg = "urxvt::ext::$pkg";
321		716
322	verbose 3, "loading script '$path' into package '$pkg'";	717	verbose 3, "loading extension '$path' into package '$pkg'";
323		718
324	open my $fh, "<:raw", $path	719	open my $fh, "<:raw", $path
325	or die "$path: $!";	720	or die "$path: $!";
326		721
		722	my $source =
327	my $source = "package $pkg; use strict; use utf8;\n"	723	"package $pkg; use strict; use utf8;\n"
328	. "#line 1 \"$path\"\n{\n"	724	. "#line 1 \"$path\"\n{\n"
329	. (do { local $/; <$fh> })	725	. (do { local $/; <$fh> })
330	. "\n};\n1";	726	. "\n};\n1";
331		727
		728	eval $source
332	eval $source or die "$path: $@";	729	or die "$path: $@";
333		730
334	$pkg	731	$pkg
335	}	732	}
336	}	733	}
337		734
		735	our $retval; # return value for urxvt
		736
338	# called by the rxvt core	737	# called by the rxvt core
339	sub invoke {	738	sub invoke {
340	local $term = shift;	739	local $TERM = shift;
341	my $htype = shift;	740	my $htype = shift;
342		741
343	if ($htype == 0) { # INIT	742	if ($htype == 0) { # INIT
344	my @dirs = ((split /:/, $term->resource ("perl_lib")), "$LIBDIR/perl");	743	my @dirs = ((split /:/, $TERM->resource ("perl_lib")), "$LIBDIR/perl");
		744
		745	my %ext_arg;
345		746
346	for my $ext (split /:/, $term->resource ("perl_ext")) {	747	{
		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	}
		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
		768	while (my ($ext, $argv) = each %ext_arg) {
347	my @files = grep -f $_, map "$_/$ext", @dirs;	769	my @files = grep -f $_, map "$_/$ext", @dirs;
348		770
349	if (@files) {	771	if (@files) {
350	register_package script_package $files[0];	772	$TERM->register_package (extension_package $files[0], $argv);
351	} else {	773	} else {
352	warn "perl extension '$ext' not found in perl library search path\n";	774	warn "perl extension '$ext' not found in perl library search path\n";
353	}	775	}
354	}	776	}
355		777
356	} elsif ($htype == 1) { # DESTROY	778	eval "#line 1 \"--perl-eval resource/argument\"\n" . $TERM->resource ("perl_eval");
357	if (my $hook = $term->{_hook}) {	779	warn $@ if $@;
358	for my $htype (0..$#$hook) {	780	}
359	$hook_count[$htype] -= scalar keys %{ $hook->[$htype] || {} }	781
360	or set_should_invoke $htype, 0;	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 $@;
361	}	797	}
362	}	798	}
		799
		800	verbose 11, "$HOOKNAME[$htype] returning <$retval>"
		801	if $verbosity >= 11;
363	}	802	}
364		803
365	my $cb = $term->{_hook}[$htype]	804	if ($htype == 1) { # DESTROY
366	or return;	805	# clear package objects
		806	%$_ = () for values %{ $TERM->{_pkg} };
367		807
368	verbose 10, "$HOOKNAME[$htype] (" . (join ", ", $term, @_) . ")"	808	# clear package
369	if $verbosity >= 10;	809	%$TERM = ();
370
371	while (my ($k, $v) = each %$cb) {
372	return 1 if $v->($term, @_);
373	}	810	}
374		811
		812	$retval
		813	}
		814
		815	# urxvt::term::extension
		816
		817	package urxvt::term::extension;
		818
		819	sub enable {
		820	my ($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} = $cb;
375	0	832	}
376	}	833	}
		834
		835	sub disable {
		836	my ($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;
377		949
378	=head2 The C<urxvt::term> Class	950	=head2 The C<urxvt::term> Class
379		951
380	=over 4	952	=over 4
		953
		954	=cut
		955
		956	# find on_xxx subs in the package and register them
		957	# as hooks
		958	sub register_package {
		959	my ($self, $pkg, $argv) = @_;
		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
		975	for my $name (@HOOKNAME) {
		976	if (my $ref = $pkg->can ("on_" . lc $name)) {
		977	$proxy->enable ($name => $ref);
		978	}
		979	}
		980	}
		981
		982	=item $term = new urxvt::term $envhashref, $rxvtname, [arg...]
		983
		984	Creates a new terminal, very similar as if you had started it with system
		985	C<$rxvtname, arg...>. C<$envhashref> must be a reference to a C<%ENV>-like
		986	hash which defines the environment of the new terminal.
		987
		988	Croaks (and probably outputs an error message) if the new instance
		989	couldn't be created. Returns C<undef> if the new instance didn't
		990	initialise perl, and the terminal object otherwise. The C<init> and
		991	C<start> hooks will be called during this call.
		992
		993	=cut
		994
		995	sub new {
		996	my ($class, $env, @args) = @_;
		997
		998	_new ([ map "$_=$env->{$_}", keys %$env ], @args);
		999	}
		1000
		1001	=item $term->destroy
		1002
		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.
		1006
		1007	=item $term->exec_async ($cmd[, @args])
		1008
		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
381		1047
382	=item $value = $term->resource ($name[, $newval])	1048	=item $value = $term->resource ($name[, $newval])
383		1049
384	Returns the current resource value associated with a given name and	1050	Returns the current resource value associated with a given name and
385	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>
…		…
395		1061
396	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
397	terminal is destroyed, so changing options frequently will eat memory.	1063	terminal is destroyed, so changing options frequently will eat memory.
398		1064
399	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
400	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>
401	list:	1067	to see the actual list:
402		1068
403	answerbackstring backgroundPixmap backspace_key boldFont boldItalicFont	1069	answerbackstring backgroundPixmap backspace_key boldFont boldItalicFont
404	borderLess color cursorBlink cursorUnderline cutchars delete_key	1070	borderLess color cursorBlink cursorUnderline cutchars delete_key
405	display_name embed ext_bwidth fade font geometry hold iconName	1071	display_name embed ext_bwidth fade font geometry hold iconName
406	imFont imLocale inputMethod insecure int_bwidth intensityStyles	1072	imFont imLocale inputMethod insecure int_bwidth intensityStyles
407	italicFont jumpScroll lineSpace loginShell mapAlert menu meta8 modifier	1073	italicFont jumpScroll lineSpace loginShell mapAlert meta8 modifier
408	mouseWheelScrollPage name pastableTabs path perl_eval perl_ext	1074	mouseWheelScrollPage name override_redirect pastableTabs path perl_eval
409	perl_lib pointerBlank pointerBlankDelay preeditType print_pipe pty_fd	1075	perl_ext_1 perl_ext_2 perl_lib pointerBlank pointerBlankDelay
410	reverseVideo saveLines scrollBar scrollBar_align scrollBar_floating	1076	preeditType print_pipe pty_fd reverseVideo saveLines scrollBar
411	scrollBar_right scrollBar_thickness scrollTtyKeypress scrollTtyOutput	1077	scrollBar_align scrollBar_floating scrollBar_right scrollBar_thickness
412	scrollWithBuffer scrollstyle secondaryScreen secondaryScroll selectstyle	1078	scrollTtyKeypress scrollTtyOutput scrollWithBuffer scrollstyle
413	shade term_name title transparent transparent_all tripleclickwords	1079	secondaryScreen secondaryScroll selectstyle shade term_name title
414	utmpInhibit visualBell	1080	transient_for transparent transparent_all tripleclickwords utmpInhibit
		1081	visualBell
415		1082
416	=cut	1083	=cut
417		1084
418	sub urxvt::term::resource($$;$) {	1085	sub resource($$;$) {
419	my ($self, $name) = (shift, shift);	1086	my ($self, $name) = (shift, shift);
420	unshift @_, $self, $name, ($name =~ s/\s*\+\s*(\d+)$// ? $1 : 0);	1087	unshift @_, $self, $name, ($name =~ s/\s*\+\s*(\d+)$// ? $1 : 0);
421	goto &urxvt::term::_resource;	1088	&urxvt::term::_resource
422	}	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, $col])
		1113
		1114	Return the current coordinates of the text cursor position and optionally
		1115	set it (which is usually bad as applications don't expect that).
423		1116
424	=item ($row, $col) = $term->selection_mark ([$row, $col])	1117	=item ($row, $col) = $term->selection_mark ([$row, $col])
425		1118
426	=item ($row, $col) = $term->selection_beg ([$row, $col])	1119	=item ($row, $col) = $term->selection_beg ([$row, $col])
427		1120
428	=item ($row, $col) = $term->selection_end ([$row, $col])	1121	=item ($row, $col) = $term->selection_end ([$row, $col])
429		1122
430	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,
431	and optionally set them to new values.	1124	and optionally set them to new values.
432		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
433	=item $success = $term->selection_grab ($eventtime)	1133	=item $success = $term->selection_grab ($eventtime)
434		1134
435	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
436	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.
437		1138
438	=item $oldtext = $term->selection ([$newtext])	1139	=item $oldtext = $term->selection ([$newtext])
439		1140
440	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>.
441		1142
442	#=item $term->overlay ($x, $y, $text)	1143	=item $term->overlay_simple ($x, $y, $text)
443	#	1144
444	#Create a simple multi-line overlay box. See the next method for details.	1145	Create a simple multi-line overlay box. See the next method for details.
445	#	1146
446	#=cut	1147	=cut
447		1148
448	sub urxvt::term::scr_overlay {	1149	sub overlay_simple {
449	die;
450	my ($self, $x, $y, $text) = @_;	1150	my ($self, $x, $y, $text) = @_;
451		1151
452	my @lines = split /\n/, $text;	1152	my @lines = split /\n/, $text;
453		1153
454	my $w = 0;	1154	my $w = List::Util::max map $self->strwidth ($_), @lines;
455	for (map $self->strwidth ($_), @lines) {
456	$w = $_ if $w < $_;
457	}
458		1155
459	$self->scr_overlay_new ($x, $y, $w, scalar @lines);	1156	my $overlay = $self->overlay ($x, $y, $w, scalar @lines);
460	$self->scr_overlay_set (0, $_, $lines[$_]) for 0.. $#lines;	1157	$overlay->set (0, $_, $lines[$_]) for 0.. $#lines;
		1158
		1159	$overlay
461	}	1160	}
462		1161
463	=item $term->overlay ($x, $y, $width, $height[, $rstyle[, $border]])	1162	=item $term->overlay ($x, $y, $width, $height[, $rstyle[, $border]])
464		1163
465	Create a new (empty) overlay at the given position with the given	1164	Create a new (empty) overlay at the given position with the given
…		…
493		1192
494	If hidden, display the overlay again.	1193	If hidden, display the overlay again.
495		1194
496	=back	1195	=back
497		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
498	=item $cellwidth = $term->strwidth $string	1224	=item $cellwidth = $term->strwidth ($string)
499		1225
500	Returns the number of screen-cells this string would need. Correctly	1226	Returns the number of screen-cells this string would need. Correctly
501	accounts for wide and combining characters.	1227	accounts for wide and combining characters.
502		1228
503	=item $octets = $term->locale_encode $string	1229	=item $octets = $term->locale_encode ($string)
504		1230
505	Convert the given text string into the corresponding locale encoding.	1231	Convert the given text string into the corresponding locale encoding.
506		1232
507	=item $string = $term->locale_decode $octets	1233	=item $string = $term->locale_decode ($octets)
508		1234
509	Convert the given locale-encoded octets into a perl string.	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.
510		1270
511	=item $term->tt_write ($octets)	1271	=item $term->tt_write ($octets)
512		1272
513	Write the octets given in C<$data> to the tty (i.e. as program input). To	1273	Write the octets given in C<$data> to the tty (i.e. as program input). To
514	pass characters instead of octets, you should convert your strings first	1274	pass characters instead of octets, you should convert your strings first
515	to the locale-specific encoding using C<< $term->locale_encode >>.	1275	to the locale-specific encoding using C<< $term->locale_encode >>.
516		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
517	=item $nrow = $term->nrow	1309	=item $terminal_rows = $term->nrow
518		1310
519	=item $ncol = $term->ncol	1311	=item $terminal_columns = $term->ncol
520		1312
521	Return the number of rows/columns of the terminal window (i.e. as	1313	=item $has_focus = $term->focus
522	specified by C<-geometry>, excluding any scrollback).
523		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
524	=item $nsaved = $term->nsaved	1333	=item $env = $term->env
525		1334
526	Returns the number of lines in the scrollback buffer.	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 }
		1345	}
		1346	}
		1347
		1348	=item $modifiermask = $term->ModLevel3Mask
		1349
		1350	=item $modifiermask = $term->ModMetaMask
		1351
		1352	=item $modifiermask = $term->ModNumLockMask
		1353
		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.
527		1356
528	=item $view_start = $term->view_start ([$newvalue])	1357	=item $view_start = $term->view_start ([$newvalue])
529		1358
530	Returns the negative row number of the topmost line. Minimum value is	1359	Returns the row number of the topmost displayed line. Maximum value is
531	C<0>, which displays the normal terminal contents. Larger values scroll	1360	C<0>, which displays the normal terminal contents. Lower values scroll
532	this many lines into the scrollback buffer.	1361	this many lines into the scrollback buffer.
533		1362
534	=item $term->want_refresh	1363	=item $term->want_refresh
535		1364
536	Requests a screen refresh. At the next opportunity, rxvt-unicode will	1365	Requests a screen refresh. At the next opportunity, rxvt-unicode will
…		…
542	=item $text = $term->ROW_t ($row_number[, $new_text[, $start_col]])	1371	=item $text = $term->ROW_t ($row_number[, $new_text[, $start_col]])
543		1372
544	Returns the text of the entire row with number C<$row_number>. Row C<0>	1373	Returns the text of the entire row with number C<$row_number>. Row C<0>
545	is the topmost terminal line, row C<< $term->$ncol-1 >> is the bottommost	1374	is the topmost terminal line, row C<< $term->$ncol-1 >> is the bottommost
546	terminal line. The scrollback buffer starts at line C<-1> and extends to	1375	terminal line. The scrollback buffer starts at line C<-1> and extends to
547	line C<< -$term->nsaved >>.	1376	line C<< -$term->nsaved >>. Nothing will be returned if a nonexistent line
		1377	is requested.
548		1378
549	If C<$new_text> is specified, it will replace characters in the current	1379	If C<$new_text> is specified, it will replace characters in the current
550	line, starting at column C<$start_col> (default C<0>), which is useful	1380	line, starting at column C<$start_col> (default C<0>), which is useful
551	to replace only parts of a line. The font index in the rendition will	1381	to replace only parts of a line. The font index in the rendition will
552	automatically be updated.	1382	automatically be updated.
…		…
574		1404
575	See the section on RENDITION, above.	1405	See the section on RENDITION, above.
576		1406
577	=item $length = $term->ROW_l ($row_number[, $new_length])	1407	=item $length = $term->ROW_l ($row_number[, $new_length])
578		1408
579	Returns the number of screen cells that are in use ("the line length"). If	1409	Returns the number of screen cells that are in use ("the line
580	it is C<-1>, then the line is part of a multiple-row logical "line", which	1410	length"). Unlike the urxvt core, this returns C<< $term->ncol >> if the
581	means all characters are in use and it is continued on the next row.	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.
		1455
		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	}
582		1533
583	=item $text = $term->special_encode $string	1534	=item $text = $term->special_encode $string
584		1535
585	Converts a perl string into the special encoding used by rxvt-unicode,	1536	Converts a perl string into the special encoding used by rxvt-unicode,
586	where one character corresponds to one screen cell. See	1537	where one character corresponds to one screen cell. See
…		…
589	=item $string = $term->special_decode $text	1540	=item $string = $term->special_decode $text
590		1541
591	Converts rxvt-unicodes text reprsentation into a perl string. See	1542	Converts rxvt-unicodes text reprsentation into a perl string. See
592	C<< $term->ROW_t >> for details.	1543	C<< $term->ROW_t >> for details.
593		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	=item $atom = $term->XInternAtom ($atom_name[, $only_if_exists])
		1574
		1575	=item $atom_name = $term->XGetAtomName ($atom)
		1576
		1577	=item @atoms = $term->XListProperties ($window)
		1578
		1579	=item ($type,$format,$octets) = $term->XGetWindowProperty ($window, $property)
		1580
		1581	=item $term->XChangeWindowProperty ($window, $property, $type, $format, $octets)
		1582
		1583	=item $term->XDeleteProperty ($window, $property)
		1584
		1585	=item $window = $term->DefaultRootWindow
		1586
		1587	=item $term->XReparentWindow ($window, $parent, [$x, $y])
		1588
		1589	=item $term->XMapWindow ($window)
		1590
		1591	=item $term->XUnmapWindow ($window)
		1592
		1593	=item $term->XMoveResizeWindow ($window, $x, $y, $width, $height)
		1594
		1595	=item ($x, $y, $child_window) = $term->XTranslateCoordinates ($src, $dst, $x, $y)
		1596
		1597	=item $term->XChangeInput ($window, $add_events[, $del_events])
		1598
		1599	Various X or X-related functions. The C<$term> object only serves as
		1600	the source of the display, otherwise those functions map more-or-less
		1601	directory onto the X functions of the same name.
		1602
594	=back	1603	=back
		1604
		1605	=cut
		1606
		1607	package urxvt::popup;
		1608
		1609	=head2 The C<urxvt::popup> Class
		1610
		1611	=over 4
		1612
		1613	=cut
		1614
		1615	sub add_item {
		1616	my ($self, $item) = @_;
		1617
		1618	$item->{rend}{normal} = "\x1b[0;30;47m" unless exists $item->{rend}{normal};
		1619	$item->{rend}{hover} = "\x1b[0;30;46m" unless exists $item->{rend}{hover};
		1620	$item->{rend}{active} = "\x1b[m" unless exists $item->{rend}{active};
		1621
		1622	$item->{render} ||= sub { $_[0]{text} };
		1623
		1624	push @{ $self->{item} }, $item;
		1625	}
		1626
		1627	=item $popup->add_title ($title)
		1628
		1629	Adds a non-clickable title to the popup.
		1630
		1631	=cut
		1632
		1633	sub add_title {
		1634	my ($self, $title) = @_;
		1635
		1636	$self->add_item ({
		1637	rend => { normal => "\x1b[38;5;11;44m", hover => "\x1b[38;5;11;44m", active => "\x1b[38;5;11;44m" },
		1638	text => $title,
		1639	activate => sub { },
		1640	});
		1641	}
		1642
		1643	=item $popup->add_separator ([$sepchr])
		1644
		1645	Creates a separator, optionally using the character given as C<$sepchr>.
		1646
		1647	=cut
		1648
		1649	sub add_separator {
		1650	my ($self, $sep) = @_;
		1651
		1652	$sep ||= "=";
		1653
		1654	$self->add_item ({
		1655	rend => { normal => "\x1b[0;30;47m", hover => "\x1b[0;30;47m", active => "\x1b[0;30;47m" },
		1656	text => "",
		1657	render => sub { $sep x $self->{term}->ncol },
		1658	activate => sub { },
		1659	});
		1660	}
		1661
		1662	=item $popup->add_button ($text, $cb)
		1663
		1664	Adds a clickable button to the popup. C<$cb> is called whenever it is
		1665	selected.
		1666
		1667	=cut
		1668
		1669	sub add_button {
		1670	my ($self, $text, $cb) = @_;
		1671
		1672	$self->add_item ({ type => "button", text => $text, activate => $cb});
		1673	}
		1674
		1675	=item $popup->add_toggle ($text, $cb, $initial_value)
		1676
		1677	Adds a toggle/checkbox item to the popup. Teh callback gets called
		1678	whenever it gets toggled, with a boolean indicating its value as its first
		1679	argument.
		1680
		1681	=cut
		1682
		1683	sub add_toggle {
		1684	my ($self, $text, $cb, $value) = @_;
		1685
		1686	my $item; $item = {
		1687	type => "button",
		1688	text => " $text",
		1689	value => $value,
		1690	render => sub { ($_[0]{value} ? "* " : " ") . $text },
		1691	activate => sub { $cb->($_[1]{value} = !$_[1]{value}); },
		1692	};
		1693
		1694	$self->add_item ($item);
		1695	}
		1696
		1697	=item $popup->show
		1698
		1699	Displays the popup (which is initially hidden).
		1700
		1701	=cut
		1702
		1703	sub show {
		1704	my ($self) = @_;
		1705
		1706	local $urxvt::popup::self = $self;
		1707
		1708	my $env = $self->{term}->env;
		1709	# we can't hope to reproduce the locale algorithm, so nuke LC_ALL and set LC_CTYPE.
		1710	delete $env->{LC_ALL};
		1711	$env->{LC_CTYPE} = $self->{term}->locale;
		1712
		1713	urxvt::term->new ($env, "popup",
		1714	"--perl-lib" => "", "--perl-ext-common" => "",
		1715	"-pty-fd" => -1, "-sl" => 0,
		1716	"-b" => 1, "-bd" => "grey80", "-bl", "-override-redirect",
		1717	"--transient-for" => $self->{term}->parent,
		1718	"-display" => $self->{term}->display_id,
		1719	"-pe" => "urxvt-popup")
		1720	or die "unable to create popup window\n";
		1721	}
		1722
		1723	sub DESTROY {
		1724	my ($self) = @_;
		1725
		1726	delete $self->{term}{_destroy}{$self};
		1727	$self->{term}->ungrab;
		1728	}
		1729
		1730	=back
		1731
		1732	=cut
		1733
		1734	package urxvt::watcher;
		1735
		1736	@urxvt::timer::ISA = __PACKAGE__;
		1737	@urxvt::iow::ISA = __PACKAGE__;
		1738	@urxvt::pw::ISA = __PACKAGE__;
		1739	@urxvt::iw::ISA = __PACKAGE__;
595		1740
596	=head2 The C<urxvt::timer> Class	1741	=head2 The C<urxvt::timer> Class
597		1742
598	This class implements timer watchers/events. Time is represented as a	1743	This class implements timer watchers/events. Time is represented as a
599	fractional number of seconds since the epoch. Example:	1744	fractional number of seconds since the epoch. Example:
…		…
638		1783
639	=item $timer = $timer->start ($tstamp)	1784	=item $timer = $timer->start ($tstamp)
640		1785
641	Set the event trigger time to C<$tstamp> and start the timer.	1786	Set the event trigger time to C<$tstamp> and start the timer.
642		1787
		1788	=item $timer = $timer->after ($delay)
		1789
		1790	Like C<start>, but sets the expiry timer to c<urxvt::NOW + $delay>.
		1791
643	=item $timer = $timer->stop	1792	=item $timer = $timer->stop
644		1793
645	Stop the timer.	1794	Stop the timer.
646		1795
647	=back	1796	=back
…		…
652		1801
653	$term->{socket} = ...	1802	$term->{socket} = ...
654	$term->{iow} = urxvt::iow	1803	$term->{iow} = urxvt::iow
655	->new	1804	->new
656	->fd (fileno $term->{socket})	1805	->fd (fileno $term->{socket})
657	->events (1) # wait for read data	1806	->events (urxvt::EVENT_READ)
658	->start	1807	->start
659	->cb (sub {	1808	->cb (sub {
660	my ($iow, $revents) = @_;	1809	my ($iow, $revents) = @_;
661	# $revents must be 1 here, no need to check	1810	# $revents must be 1 here, no need to check
662	sysread $term->{socket}, my $buf, 8192	1811	sysread $term->{socket}, my $buf, 8192
…		…
679		1828
680	Set the filedescriptor (not handle) to watch.	1829	Set the filedescriptor (not handle) to watch.
681		1830
682	=item $iow = $iow->events ($eventmask)	1831	=item $iow = $iow->events ($eventmask)
683		1832
684	Set the event mask to watch. Bit #0 (value C<1>) enables watching for read	1833	Set the event mask to watch. The only allowed values are
685	data, Bit #1 (value C<2>) enables watching for write data.	1834	C<urxvt::EVENT_READ> and C<urxvt::EVENT_WRITE>, which might be ORed
		1835	together, or C<urxvt::EVENT_NONE>.
686		1836
687	=item $iow = $iow->start	1837	=item $iow = $iow->start
688		1838
689	Start watching for requested events on the given handle.	1839	Start watching for requested events on the given handle.
690		1840
691	=item $iow = $iow->stop	1841	=item $iow = $iow->stop
692		1842
693	Stop watching for events on the given filehandle.	1843	Stop watching for events on the given filehandle.
		1844
		1845	=back
		1846
		1847	=head2 The C<urxvt::iw> Class
		1848
		1849	This class implements idle watchers, that get called automatically when
		1850	the process is idle. They should return as fast as possible, after doing
		1851	some useful work.
		1852
		1853	=over 4
		1854
		1855	=item $iw = new urxvt::iw
		1856
		1857	Create a new idle watcher object in stopped state.
		1858
		1859	=item $iw = $iw->cb (sub { my ($iw) = @_; ... })
		1860
		1861	Set the callback to be called when the watcher triggers.
		1862
		1863	=item $timer = $timer->start
		1864
		1865	Start the watcher.
		1866
		1867	=item $timer = $timer->stop
		1868
		1869	Stop the watcher.
		1870
		1871	=back
		1872
		1873	=head2 The C<urxvt::pw> Class
		1874
		1875	This class implements process watchers. They create an event whenever a
		1876	process exits, after which they stop automatically.
		1877
		1878	my $pid = fork;
		1879	...
		1880	$term->{pw} = urxvt::pw
		1881	->new
		1882	->start ($pid)
		1883	->cb (sub {
		1884	my ($pw, $exit_status) = @_;
		1885	...
		1886	});
		1887
		1888	=over 4
		1889
		1890	=item $pw = new urxvt::pw
		1891
		1892	Create a new process watcher in stopped state.
		1893
		1894	=item $pw = $pw->cb (sub { my ($pw, $exit_status) = @_; ... })
		1895
		1896	Set the callback to be called when the timer triggers.
		1897
		1898	=item $pw = $timer->start ($pid)
		1899
		1900	Tells the wqtcher to start watching for process C<$pid>.
		1901
		1902	=item $pw = $pw->stop
		1903
		1904	Stop the watcher.
694		1905
695	=back	1906	=back
696		1907
697	=head1 ENVIRONMENT	1908	=head1 ENVIRONMENT
698		1909
…		…
701	This variable controls the verbosity level of the perl extension. Higher	1912	This variable controls the verbosity level of the perl extension. Higher
702	numbers indicate more verbose output.	1913	numbers indicate more verbose output.
703		1914
704	=over 4	1915	=over 4
705		1916
706	=item 0 - only fatal messages	1917	=item == 0 - fatal messages
707		1918
708	=item 3 - script loading and management	1919	=item >= 3 - script loading and management
709		1920
710	=item 10 - all events received	1921	=item >=10 - all called hooks
		1922
		1923	=item >=11 - hook reutrn values
711		1924
712	=back	1925	=back
713		1926
714	=head1 AUTHOR	1927	=head1 AUTHOR
715		1928

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