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Revision 1.33 by root, Thu Jan 5 01:04:10 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 extension tries to be more intelligent when	48	(More) intelligent selection. This extension tries to be more intelligent
45	the user extends selections (double-click). Right now, it tries to select	49	when the user extends selections (double-click and further clicks). Right
46	urls and complete shell-quoted arguments, which is very convenient, too,	50	now, it tries to select words, urls and complete shell-quoted
47	if your F<ls> supports C<--quoting-style=shell>.	51	arguments, which is very convenient, too, if your F<ls> supports
		52	C<--quoting-style=shell>.
48		53
49	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:
50		76
51	=over 4	77	=over 4
52		78
53	=item rot13	79	=item rot13
54		80
55	Rot-13 the selection when activated. Used via keyboard trigger:	81	Rot-13 the selection when activated. Used via keyboard trigger:
56		82
57	URxvt.keysym.C-M-r: perl:selection:rot13	83	URxvt.keysym.C-M-r: perl:selection:rot13
58		84
59	=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.
60		198
61	=item digital-clock	199	=item digital-clock
62		200
63	Displays a digital clock using the built-in overlay.	201	Displays a digital clock using the built-in overlay.
64		202
…		…
66		204
67	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
68	window. Illustrates overwriting the refresh callbacks to create your own	206	window. Illustrates overwriting the refresh callbacks to create your own
69	overlays or changes.	207	overlays or changes.
70		208
71	=item mark-urls	209	=item selection-pastebin
72		210
73	A not very useful example of filtering all text output to the terminal, by	211	This is a little rarely useful extension that Uploads the selection as
74	underlining all urls that matches a certain regex (i.e. some urls :). It	212	textfile to a remote site (or does other things). (The implementation is
75	is not very useful because urls that are output in multiple steps (e.g.	213	not currently secure for use in a multiuser environment as it writes to
76	when typing them) do not get marked.	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/%
77		237
78	=back	238	=back
		239
		240	=head1 API DOCUMENTATION
79		241
80	=head2 General API Considerations	242	=head2 General API Considerations
81		243
82	All objects (such as terminals, time watchers etc.) are typical	244	All objects (such as terminals, time watchers etc.) are typical
83	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
…		…
96	=over 4	258	=over 4
97		259
98	=item $text	260	=item $text
99		261
100	Rxvt-unicodes special way of encoding text, where one "unicode" character	262	Rxvt-unicodes special way of encoding text, where one "unicode" character
101	always represents one screen cell. See L<row_t> for a discussion of this format.	263	always represents one screen cell. See L<ROW_t> for a discussion of this format.
102		264
103	=item $string	265	=item $string
104		266
105	A perl text string, with an emphasis on I<text>. It can store all unicode	267	A perl text string, with an emphasis on I<text>. It can store all unicode
106	characters and is to be distinguished with text encoded in a specific	268	characters and is to be distinguished with text encoded in a specific
…		…
111	Either binary data or - more common - a text string encoded in a	273	Either binary data or - more common - a text string encoded in a
112	locale-specific way.	274	locale-specific way.
113		275
114	=back	276	=back
115		277
		278	=head2 Extension Objects
		279
		280	Very perl extension is a perl class. A separate perl object is created
		281	for each terminal and each extension and passed as the first parameter to
		282	hooks. So extensions can use their C<$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
116	=head2 Hooks	311	=head2 Hooks
117		312
118	The following subroutines can be declared in loaded scripts, and will be	313	The following subroutines can be declared in extension files, and will be
119	called whenever the relevant event happens.	314	called whenever the relevant event happens.
120		315
121	The first argument passed to them is an object private to each terminal	316	The first argument passed to them is an extension oject as described in
122	and extension package. You can call all C<urxvt::term> methods on it, but	317	the in the C<Extension Objects> section.
123	its not a real C<urxvt::term> object. Instead, the real C<urxvt::term>
124	object that is shared between all packages is stored in the C<term>
125	member.
126		318
127	All of them must return a boolean value. If it is true, then the event	319	B<All> of these hooks must return a boolean value. If any of the called
128	counts as being I<consumed>, and the invocation of other hooks is skipped,	320	hooks returns true, then the event counts as being I<consumed>, and the
129	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.
130		322
131	When in doubt, return a false value (preferably C<()>).	323	I<< When in doubt, return a false value (preferably C<()>). >>
132		324
133	=over 4	325	=over 4
134		326
135	=item on_init $term	327	=item on_init $term
136		328
137	Called after a new terminal object has been initialized, but before	329	Called after a new terminal object has been initialized, but before
138	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.
139		346
140	=item on_reset $term	347	=item on_reset $term
141		348
142	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
143	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
144	variables.	351	variables.
145		352
146	=item on_start $term	353	=item on_child_start $term, $pid
147		354
148	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.
149	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>.
150		361
151	=item on_sel_make $term, $eventtime	362	=item on_sel_make $term, $eventtime
152		363
153	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
154	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
…		…
168	=item on_sel_extend $term	379	=item on_sel_extend $term
169		380
170	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
171	click) and is either supposed to return false (normal operation), or	382	click) and is either supposed to return false (normal operation), or
172	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
173	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.
174		387
175	See the F<selection> example extension.	388	See the F<selection> example extension.
176
177	=item on_focus_in $term
178
179	Called whenever the window gets the keyboard focus, before urxvt does
180	focus in processing.
181
182	=item on_focus_out $term
183
184	Called wheneever the window loses keyboard focus, before urxvt does focus
185	out processing.
186		389
187	=item on_view_change $term, $offset	390	=item on_view_change $term, $offset
188		391
189	Called whenever the view offset changes, i..e the user or program	392	Called whenever the view offset changes, i..e the user or program
190	scrolls. Offset C<0> means display the normal terminal, positive values	393	scrolls. Offset C<0> means display the normal terminal, positive values
…		…
197	than the scroll back buffer or the terminal.	400	than the scroll back buffer or the terminal.
198		401
199	It is called before lines are scrolled out (so rows 0 .. min ($lines - 1,	402	It is called before lines are scrolled out (so rows 0 .. min ($lines - 1,
200	$nrow - 1) represent the lines to be scrolled out). C<$saved> is the total	403	$nrow - 1) represent the lines to be scrolled out). C<$saved> is the total
201	number of lines that will be in the scrollback buffer.	404	number of lines that will be in the scrollback buffer.
202
203	=item on_tty_activity $term *NYI*
204
205	Called whenever the program(s) running in the urxvt window send output.
206		405
207	=item on_osc_seq $term, $string	406	=item on_osc_seq $term, $string
208		407
209	Called whenever the B<ESC ] 777 ; string ST> command sequence (OSC =	408	Called whenever the B<ESC ] 777 ; string ST> command sequence (OSC =
210	operating system command) is processed. Cursor position and other state	409	operating system command) is processed. Cursor position and other state
…		…
223	can filter/change and output the text yourself by returning a true value	422	can filter/change and output the text yourself by returning a true value
224	and calling C<< $term->scr_add_lines >> yourself. Please note that this	423	and calling C<< $term->scr_add_lines >> yourself. Please note that this
225	might be very slow, however, as your hook is called for B<all> text being	424	might be very slow, however, as your hook is called for B<all> text being
226	output.	425	output.
227		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.
		445
228	=item on_refresh_begin $term	446	=item on_refresh_begin $term
229		447
230	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
231	or similar effects by modify terminal contents in refresh_begin, and	449	or similar effects by modify terminal contents in refresh_begin, and
232	restoring them in refresh_end. The built-in overlay and selection display	450	restoring them in refresh_end. The built-in overlay and selection display
…		…
240		458
241	Called whenever the user presses a key combination that has a	459	Called whenever the user presses a key combination that has a
242	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>
243	resource in the @@RXVT_NAME@@(1) manpage).	461	resource in the @@RXVT_NAME@@(1) manpage).
244		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
245	=back	518	=back
246		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
247	=head2 Variables in the C<urxvt> Package	543	=head2 Variables in the C<urxvt> Package
248		544
249	=over 4	545	=over 4
250		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
251	=item $urxvt::TERM	560	=item $urxvt::TERM
252		561
253	The current terminal. Whenever a callback/Hook is bein executed, this	562	The current terminal. This variable stores the current C<urxvt::term>
254	variable stores the current C<urxvt::term> object.	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>.
255		580
256	=back	581	=back
257		582
258	=head2 Functions in the C<urxvt> Package	583	=head2 Functions in the C<urxvt> Package
259		584
…		…
272	that calls this function.	597	that calls this function.
273		598
274	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
275	correct place, e.g. on stderr of the connecting urxvtc client.	600	correct place, e.g. on stderr of the connecting urxvtc client.
276		601
		602	Messages have a size limit of 1023 bytes currently.
		603
277	=item $time = urxvt::NOW	604	=item $time = urxvt::NOW
278		605
279	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.
280		631
281	=back	632	=back
282		633
283	=head2 RENDITION	634	=head2 RENDITION
284		635
…		…
311		662
312	=item $background = urxvt::GET_BASEBG $rend	663	=item $background = urxvt::GET_BASEBG $rend
313		664
314	Return the foreground/background colour index, respectively.	665	Return the foreground/background colour index, respectively.
315		666
316	=item $rend = urxvt::SET_FGCOLOR ($rend, $new_colour)	667	=item $rend = urxvt::SET_FGCOLOR $rend, $new_colour
317		668
318	=item $rend = urxvt::SET_BGCOLOR ($rend, $new_colour)	669	=item $rend = urxvt::SET_BGCOLOR $rend, $new_colour
319		670
320	Replace the foreground/background colour in the rendition mask with the	671	Replace the foreground/background colour in the rendition mask with the
321	specified one.	672	specified one.
322		673
323	=item $value = urxvt::GET_CUSTOM ($rend)	674	=item $value = urxvt::GET_CUSTOM $rend
324		675
325	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
326	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
327	zero.	678	zero.
328		679
329	=item $rend = urxvt::SET_CUSTOM ($rend, $new_value)	680	=item $rend = urxvt::SET_CUSTOM $rend, $new_value
330		681
331	Change the custom value.	682	Change the custom value.
332		683
333	=back	684	=back
334		685
335	=cut	686	=cut
336		687
337	package urxvt;
338
339	use strict;
340	use Scalar::Util ();
341
342	our $TERM;
343	our @HOOKNAME;
344	our $LIBDIR;
345
346	BEGIN {	688	BEGIN {
347	urxvt->bootstrap;
348
349	# overwrite perl's warn	689	# overwrite perl's warn
350	*CORE::GLOBAL::warn = sub {	690	*CORE::GLOBAL::warn = sub {
351	my $msg = join "", @_;	691	my $msg = join "", @_;
352	$msg .= "\n"	692	$msg .= "\n"
353	unless $msg =~ /\n$/;	693	unless $msg =~ /\n$/;
354	urxvt::warn ($msg);	694	urxvt::warn ($msg);
355	};	695	};
356	}	696	}
357		697
358	my @hook_count;
359	my $verbosity = $ENV{URXVT_PERL_VERBOSITY};	698	my $verbosity = $ENV{URXVT_PERL_VERBOSITY};
360		699
361	sub verbose {	700	sub verbose {
362	my ($level, $msg) = @_;	701	my ($level, $msg) = @_;
363	warn "$msg\n" if $level <= $verbosity;	702	warn "$msg\n" if $level <= $verbosity;
364	}	703	}
365		704
366	# find on_xxx subs in the package and register them	705	my %extension_pkg;
367	# as hooks
368	sub register_package($) {
369	my ($pkg) = @_;
370
371	for my $htype (0.. $#HOOKNAME) {
372	my $name = $HOOKNAME[$htype];
373
374	my $ref = $pkg->can ("on_" . lc $name)
375	or next;
376
377	$TERM->{_hook}[$htype]{$pkg} = $ref;
378	$hook_count[$htype]++
379	or set_should_invoke $htype, 1;
380	}
381	}
382
383	my $script_pkg = "script0000";
384	my %script_pkg;
385		706
386	# load a single script into its own package, once only	707	# load a single script into its own package, once only
387	sub script_package($) {	708	sub extension_package($) {
388	my ($path) = @_;	709	my ($path) = @_;
389		710
390	$script_pkg{$path} ||= do {	711	$extension_pkg{$path} ||= do {
391	my $pkg = "urxvt::" . ($script_pkg++);	712	$path =~ /([^\/\\]+)$/;
		713	my $pkg = $1;
		714	$pkg =~ s/[^[:word:]]/_/g;
		715	$pkg = "urxvt::ext::$pkg";
392		716
393	verbose 3, "loading script '$path' into package '$pkg'";	717	verbose 3, "loading extension '$path' into package '$pkg'";
394		718
395	open my $fh, "<:raw", $path	719	open my $fh, "<:raw", $path
396	or die "$path: $!";	720	or die "$path: $!";
397		721
		722	my $source =
398	my $source = "package $pkg; use strict; use utf8;\n"	723	"package $pkg; use strict; use utf8;\n"
399	. "#line 1 \"$path\"\n{\n"	724	. "#line 1 \"$path\"\n{\n"
400	. (do { local $/; <$fh> })	725	. (do { local $/; <$fh> })
401	. "\n};\n1";	726	. "\n};\n1";
402		727
		728	eval $source
403	eval $source or die "$path: $@";	729	or die "$path: $@";
404		730
405	$pkg	731	$pkg
406	}	732	}
407	}	733	}
408		734
…		…
413	local $TERM = shift;	739	local $TERM = shift;
414	my $htype = shift;	740	my $htype = shift;
415		741
416	if ($htype == 0) { # INIT	742	if ($htype == 0) { # INIT
417	my @dirs = ((split /:/, $TERM->resource ("perl_lib")), "$LIBDIR/perl");	743	my @dirs = ((split /:/, $TERM->resource ("perl_lib")), "$LIBDIR/perl");
		744
		745	my %ext_arg;
418		746
		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
419	for my $ext (map { split /:/, $TERM->resource ("perl_ext_$_") } 1, 2) {	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) {
420	my @files = grep -f $_, map "$_/$ext", @dirs;	769	my @files = grep -f $_, map "$_/$ext", @dirs;
421		770
422	if (@files) {	771	if (@files) {
423	register_package script_package $files[0];	772	$TERM->register_package (extension_package $files[0], $argv);
424	} else {	773	} else {
425	warn "perl extension '$ext' not found in perl library search path\n";	774	warn "perl extension '$ext' not found in perl library search path\n";
426	}	775	}
427	}	776	}
		777
		778	eval "#line 1 \"--perl-eval resource/argument\"\n" . $TERM->resource ("perl_eval");
		779	warn $@ if $@;
428	}	780	}
429		781
430	$retval = undef;	782	$retval = undef;
431		783
432	if (my $cb = $TERM->{_hook}[$htype]) {	784	if (my $cb = $TERM->{_hook}[$htype]) {
…		…
434	if $verbosity >= 10;	786	if $verbosity >= 10;
435		787
436	keys %$cb;	788	keys %$cb;
437		789
438	while (my ($pkg, $cb) = each %$cb) {	790	while (my ($pkg, $cb) = each %$cb) {
439	$retval = $cb->(	791	my $retval_ = eval { $cb->($TERM->{_pkg}{$pkg}, @_) };
440	$TERM->{_pkg}{$pkg} ||= do {	792	$retval ||= $retval_;
441	my $proxy = bless { }, urxvt::term::proxy::;
442	Scalar::Util::weaken ($proxy->{term} = $TERM);
443	$proxy
444	},
445	@_,
446	) and last;
447	}
448	}
449		793
450	if ($htype == 1) { # DESTROY	794	if ($@) {
451	# remove hooks if unused	795	$TERM->ungrab; # better to lose the grab than the session
452	if (my $hook = $TERM->{_hook}) {	796	warn $@;
453	for my $htype (0..$#$hook) {
454	$hook_count[$htype] -= scalar keys %{ $hook->[$htype] || {} }
455	or set_should_invoke $htype, 0;
456	}	797	}
457	}	798	}
458		799
		800	verbose 11, "$HOOKNAME[$htype] returning <$retval>"
		801	if $verbosity >= 11;
		802	}
		803
		804	if ($htype == 1) { # DESTROY
459	# clear package objects	805	# clear package objects
460	%$_ = () for values %{ $TERM->{_pkg} };	806	%$_ = () for values %{ $TERM->{_pkg} };
461		807
462	# clear package	808	# clear package
463	%$TERM = ();	809	%$TERM = ();
464	}	810	}
465		811
466	$retval	812	$retval
467	}	813	}
468		814
469	sub urxvt::term::proxy::AUTOLOAD {	815	# urxvt::term::extension
470	$urxvt::term::proxy::AUTOLOAD =~ /:([^:]+)$/	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	$AUTOLOAD =~ /:([^:]+)$/
471	or die "FATAL: \$AUTOLOAD '$urxvt::term::proxy::AUTOLOAD' unparsable";	853	or die "FATAL: \$AUTOLOAD '$AUTOLOAD' unparsable";
472		854
473	eval qq{	855	eval qq{
474	sub $urxvt::term::proxy::AUTOLOAD {	856	sub $AUTOLOAD {
475	my \$proxy = shift;	857	my \$proxy = shift;
476	\$proxy->{term}->$1 (\@_)	858	\$proxy->{term}->$1 (\@_)
477	}	859	}
478	1	860	1
479	} or die "FATAL: unable to compile method forwarder: $@";	861	} or die "FATAL: unable to compile method forwarder: $@";
480		862
481	goto &$urxvt::term::proxy::AUTOLOAD;	863	goto &$AUTOLOAD;
482	}	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;
483		949
484	=head2 The C<urxvt::term> Class	950	=head2 The C<urxvt::term> Class
485		951
486	=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
487		1047
488	=item $value = $term->resource ($name[, $newval])	1048	=item $value = $term->resource ($name[, $newval])
489		1049
490	Returns the current resource value associated with a given name and	1050	Returns the current resource value associated with a given name and
491	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>
…		…
501		1061
502	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
503	terminal is destroyed, so changing options frequently will eat memory.	1063	terminal is destroyed, so changing options frequently will eat memory.
504		1064
505	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
506	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>
507	list:	1067	to see the actual list:
508		1068
509	answerbackstring backgroundPixmap backspace_key boldFont boldItalicFont	1069	answerbackstring backgroundPixmap backspace_key boldFont boldItalicFont
510	borderLess color cursorBlink cursorUnderline cutchars delete_key	1070	borderLess color cursorBlink cursorUnderline cutchars delete_key
511	display_name embed ext_bwidth fade font geometry hold iconName	1071	display_name embed ext_bwidth fade font geometry hold iconName
512	imFont imLocale inputMethod insecure int_bwidth intensityStyles	1072	imFont imLocale inputMethod insecure int_bwidth intensityStyles
513	italicFont jumpScroll lineSpace loginShell mapAlert menu meta8 modifier	1073	italicFont jumpScroll lineSpace loginShell mapAlert meta8 modifier
514	mouseWheelScrollPage name pastableTabs path perl_eval perl_ext_1 perl_ext_2	1074	mouseWheelScrollPage name override_redirect pastableTabs path perl_eval
515	perl_lib pointerBlank pointerBlankDelay preeditType print_pipe pty_fd	1075	perl_ext_1 perl_ext_2 perl_lib pointerBlank pointerBlankDelay
516	reverseVideo saveLines scrollBar scrollBar_align scrollBar_floating	1076	preeditType print_pipe pty_fd reverseVideo saveLines scrollBar
517	scrollBar_right scrollBar_thickness scrollTtyKeypress scrollTtyOutput	1077	scrollBar_align scrollBar_floating scrollBar_right scrollBar_thickness
518	scrollWithBuffer scrollstyle secondaryScreen secondaryScroll selectstyle	1078	scrollTtyKeypress scrollTtyOutput scrollWithBuffer scrollstyle
519	shade term_name title transparent transparent_all tripleclickwords	1079	secondaryScreen secondaryScroll selectstyle shade term_name title
520	utmpInhibit visualBell	1080	transient_for transparent transparent_all tripleclickwords utmpInhibit
		1081	visualBell
521		1082
522	=cut	1083	=cut
523		1084
524	sub urxvt::term::resource($$;$) {	1085	sub resource($$;$) {
525	my ($self, $name) = (shift, shift);	1086	my ($self, $name) = (shift, shift);
526	unshift @_, $self, $name, ($name =~ s/\s*\+\s*(\d+)$// ? $1 : 0);	1087	unshift @_, $self, $name, ($name =~ s/\s*\+\s*(\d+)$// ? $1 : 0);
527	goto &urxvt::term::_resource;	1088	&urxvt::term::_resource
528	}	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.
529		1106
530	=item $rend = $term->rstyle ([$new_rstyle])	1107	=item $rend = $term->rstyle ([$new_rstyle])
531		1108
532	Return and optionally change the current rendition. Text that is output by	1109	Return and optionally change the current rendition. Text that is output by
533	the terminal application will use this style.	1110	the terminal application will use this style.
…		…
544	=item ($row, $col) = $term->selection_end ([$row, $col])	1121	=item ($row, $col) = $term->selection_end ([$row, $col])
545		1122
546	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,
547	and optionally set them to new values.	1124	and optionally set them to new values.
548		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
549	=item $success = $term->selection_grab ($eventtime)	1133	=item $success = $term->selection_grab ($eventtime)
550		1134
551	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
552	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.
553		1138
554	=item $oldtext = $term->selection ([$newtext])	1139	=item $oldtext = $term->selection ([$newtext])
555		1140
556	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>.
557		1142
558	#=item $term->overlay ($x, $y, $text)	1143	=item $term->overlay_simple ($x, $y, $text)
559	#	1144
560	#Create a simple multi-line overlay box. See the next method for details.	1145	Create a simple multi-line overlay box. See the next method for details.
561	#	1146
562	#=cut	1147	=cut
563	#	1148
564	#sub urxvt::term::scr_overlay {	1149	sub overlay_simple {
565	# my ($self, $x, $y, $text) = @_;	1150	my ($self, $x, $y, $text) = @_;
566	#	1151
567	# my @lines = split /\n/, $text;	1152	my @lines = split /\n/, $text;
568	#	1153
569	# my $w = 0;	1154	my $w = List::Util::max map $self->strwidth ($_), @lines;
570	# for (map $self->strwidth ($_), @lines) {	1155
571	# $w = $_ if $w < $_;
572	# }
573	#
574	# $self->scr_overlay_new ($x, $y, $w, scalar @lines);	1156	my $overlay = $self->overlay ($x, $y, $w, scalar @lines);
575	# $self->scr_overlay_set (0, $_, $lines[$_]) for 0.. $#lines;	1157	$overlay->set (0, $_, $lines[$_]) for 0.. $#lines;
576	#}	1158
		1159	$overlay
		1160	}
577		1161
578	=item $term->overlay ($x, $y, $width, $height[, $rstyle[, $border]])	1162	=item $term->overlay ($x, $y, $width, $height[, $rstyle[, $border]])
579		1163
580	Create a new (empty) overlay at the given position with the given	1164	Create a new (empty) overlay at the given position with the given
581	width/height. C<$rstyle> defines the initial rendition style	1165	width/height. C<$rstyle> defines the initial rendition style
…		…
608		1192
609	If hidden, display the overlay again.	1193	If hidden, display the overlay again.
610		1194
611	=back	1195	=back
612		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
613	=item $cellwidth = $term->strwidth $string	1224	=item $cellwidth = $term->strwidth ($string)
614		1225
615	Returns the number of screen-cells this string would need. Correctly	1226	Returns the number of screen-cells this string would need. Correctly
616	accounts for wide and combining characters.	1227	accounts for wide and combining characters.
617		1228
618	=item $octets = $term->locale_encode $string	1229	=item $octets = $term->locale_encode ($string)
619		1230
620	Convert the given text string into the corresponding locale encoding.	1231	Convert the given text string into the corresponding locale encoding.
621		1232
622	=item $string = $term->locale_decode $octets	1233	=item $string = $term->locale_decode ($octets)
623		1234
624	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!
625		1253
626	=item $term->scr_add_lines ($string)	1254	=item $term->scr_add_lines ($string)
627		1255
628	Write the given text string to the screen, as if output by the application	1256	Write the given text string to the screen, as if output by the application
629	running inside the terminal. It may not contain command sequences (escape	1257	running inside the terminal. It may not contain command sequences (escape
…		…
632		1260
633	Normally its not a good idea to use this function, as programs might be	1261	Normally its not a good idea to use this function, as programs might be
634	confused by changes in cursor position or scrolling. Its useful inside a	1262	confused by changes in cursor position or scrolling. Its useful inside a
635	C<on_add_lines> hook, though.	1263	C<on_add_lines> hook, though.
636		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
637	=item $term->tt_write ($octets)	1271	=item $term->tt_write ($octets)
638		1272
639	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
640	pass characters instead of octets, you should convert your strings first	1274	pass characters instead of octets, you should convert your strings first
641	to the locale-specific encoding using C<< $term->locale_encode >>.	1275	to the locale-specific encoding using C<< $term->locale_encode >>.
642		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
643	=item $window_width = $term->width	1299	=item $window_width = $term->width
644		1300
645	=item $window_height = $term->height	1301	=item $window_height = $term->height
646		1302
647	=item $font_width = $term->fwidth	1303	=item $font_width = $term->fwidth
…		…
660		1316
661	=item $max_scrollback = $term->saveLines	1317	=item $max_scrollback = $term->saveLines
662		1318
663	=item $nrow_plus_saveLines = $term->total_rows	1319	=item $nrow_plus_saveLines = $term->total_rows
664		1320
665	=item $lines_in_scrollback = $term->nsaved	1321	=item $topmost_scrollback_row = $term->top_row
666		1322
667	Return various integers describing terminal characteristics.	1323	Return various integers describing terminal characteristics.
668		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 }
		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.
		1356
669	=item $view_start = $term->view_start ([$newvalue])	1357	=item $view_start = $term->view_start ([$newvalue])
670		1358
671	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
672	C<0>, which displays the normal terminal contents. Larger values scroll	1360	C<0>, which displays the normal terminal contents. Lower values scroll
673	this many lines into the scrollback buffer.	1361	this many lines into the scrollback buffer.
674		1362
675	=item $term->want_refresh	1363	=item $term->want_refresh
676		1364
677	Requests a screen refresh. At the next opportunity, rxvt-unicode will	1365	Requests a screen refresh. At the next opportunity, rxvt-unicode will
…		…
735	about the logical line that row C<$row_number> is part of. It supports the	1423	about the logical line that row C<$row_number> is part of. It supports the
736	following methods:	1424	following methods:
737		1425
738	=over 4	1426	=over 4
739		1427
740	=item $text = $line->t	1428	=item $text = $line->t ([$new_text])
741		1429
742	Returns the full text of the line, similar to C<ROW_t>	1430	Returns or replaces the full text of the line, similar to C<ROW_t>
743		1431
744	=item $rend = $line->r	1432	=item $rend = $line->r ([$new_rend])
745		1433
746	Returns the full rendition array of the line, similar to C<ROW_r>	1434	Returns or replaces the full rendition array of the line, similar to C<ROW_r>
747		1435
748	=item $length = $line->l	1436	=item $length = $line->l
749		1437
750	Returns the length of the line in cells, similar to C<ROW_l>.	1438	Returns the length of the line in cells, similar to C<ROW_l>.
751		1439
…		…
756	Return the row number of the first/last row of the line, respectively.	1444	Return the row number of the first/last row of the line, respectively.
757		1445
758	=item $offset = $line->offset_of ($row, $col)	1446	=item $offset = $line->offset_of ($row, $col)
759		1447
760	Returns the character offset of the given row|col pair within the logical	1448	Returns the character offset of the given row|col pair within the logical
761	line.	1449	line. Works for rows outside the line, too, and returns corresponding
		1450	offsets outside the string.
762		1451
763	=item ($row, $col) = $line->coord_of ($offset)	1452	=item ($row, $col) = $line->coord_of ($offset)
764		1453
765	Translates a string offset into terminal coordinates again.	1454	Translates a string offset into terminal coordinates again.
766		1455
767	=back	1456	=back
768		1457
769	=cut	1458	=cut
770		1459
771	sub urxvt::term::line {	1460	sub line {
772	my ($self, $row) = @_;	1461	my ($self, $row) = @_;
773		1462
774	my $maxrow = $self->nrow - 1;	1463	my $maxrow = $self->nrow - 1;
775		1464
776	my ($beg, $end) = ($row, $row);	1465	my ($beg, $end) = ($row, $row);
…		…
780		1469
781	bless {	1470	bless {
782	term => $self,	1471	term => $self,
783	beg => $beg,	1472	beg => $beg,
784	end => $end,	1473	end => $end,
		1474	ncol => $self->ncol,
785	len => ($end - $beg) * $self->ncol + $self->ROW_l ($end),	1475	len => ($end - $beg) * $self->ncol + $self->ROW_l ($end),
786	}, urxvt::line::	1476	}, urxvt::line::
787	}	1477	}
788		1478
789	sub urxvt::line::t {	1479	sub urxvt::line::t {
790	my ($self) = @_;	1480	my ($self) = @_;
791		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 &&
792	substr +(join "", map $self->{term}->ROW_t ($_), $self->{beg} .. $self->{end}),	1489	substr +(join "", map $self->{term}->ROW_t ($_), $self->{beg} .. $self->{end}),
793	0, $self->{len}	1490	0, $self->{len}
794	}	1491	}
795		1492
796	sub urxvt::line::r {	1493	sub urxvt::line::r {
797	my ($self) = @_;	1494	my ($self) = @_;
798		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) {
799	my $rend = [	1503	my $rend = [
800	map @{ $self->{term}->ROW_r ($_) }, $self->{beg} .. $self->{end}	1504	map @{ $self->{term}->ROW_r ($_) }, $self->{beg} .. $self->{end}
801	];	1505	];
802	$#$rend = $self->{len} - 1;	1506	$#$rend = $self->{len} - 1;
803	$rend	1507	return $rend;
		1508	}
		1509
		1510	()
804	}	1511	}
805		1512
806	sub urxvt::line::beg { $_[0]{beg} }	1513	sub urxvt::line::beg { $_[0]{beg} }
807	sub urxvt::line::end { $_[0]{end} }	1514	sub urxvt::line::end { $_[0]{end} }
808	sub urxvt::line::l { $_[0]{len} }	1515	sub urxvt::line::l { $_[0]{len} }
809		1516
810	sub urxvt::line::offset_of {	1517	sub urxvt::line::offset_of {
811	my ($self, $row, $col) = @_;	1518	my ($self, $row, $col) = @_;
812		1519
813	($row - $self->{beg}) * $self->{term}->ncol + $col	1520	($row - $self->{beg}) * $self->{ncol} + $col
814	}	1521	}
815		1522
816	sub urxvt::line::coord_of {	1523	sub urxvt::line::coord_of {
817	my ($self, $offset) = @_;	1524	my ($self, $offset) = @_;
818		1525
819	use integer;	1526	use integer;
820		1527
821	(	1528	(
822	$offset / $self->{term}->ncol + $self->{beg},	1529	$offset / $self->{ncol} + $self->{beg},
823	$offset % $self->{term}->ncol	1530	$offset % $self->{ncol}
824	)	1531	)
825	}	1532	}
826		1533
827	=item ($row, $col) = $line->coord_of ($offset)
828	=item $text = $term->special_encode $string	1534	=item $text = $term->special_encode $string
829		1535
830	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,
831	where one character corresponds to one screen cell. See	1537	where one character corresponds to one screen cell. See
832	C<< $term->ROW_t >> for details.	1538	C<< $term->ROW_t >> for details.
…		…
834	=item $string = $term->special_decode $text	1540	=item $string = $term->special_decode $text
835		1541
836	Converts rxvt-unicodes text reprsentation into a perl string. See	1542	Converts rxvt-unicodes text reprsentation into a perl string. See
837	C<< $term->ROW_t >> for details.	1543	C<< $term->ROW_t >> for details.
838		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
839	=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__;
840		1740
841	=head2 The C<urxvt::timer> Class	1741	=head2 The C<urxvt::timer> Class
842		1742
843	This class implements timer watchers/events. Time is represented as a	1743	This class implements timer watchers/events. Time is represented as a
844	fractional number of seconds since the epoch. Example:	1744	fractional number of seconds since the epoch. Example:
…		…
883		1783
884	=item $timer = $timer->start ($tstamp)	1784	=item $timer = $timer->start ($tstamp)
885		1785
886	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.
887		1787
		1788	=item $timer = $timer->after ($delay)
		1789
		1790	Like C<start>, but sets the expiry timer to c<urxvt::NOW + $delay>.
		1791
888	=item $timer = $timer->stop	1792	=item $timer = $timer->stop
889		1793
890	Stop the timer.	1794	Stop the timer.
891		1795
892	=back	1796	=back
…		…
897		1801
898	$term->{socket} = ...	1802	$term->{socket} = ...
899	$term->{iow} = urxvt::iow	1803	$term->{iow} = urxvt::iow
900	->new	1804	->new
901	->fd (fileno $term->{socket})	1805	->fd (fileno $term->{socket})
902	->events (1) # wait for read data	1806	->events (urxvt::EVENT_READ)
903	->start	1807	->start
904	->cb (sub {	1808	->cb (sub {
905	my ($iow, $revents) = @_;	1809	my ($iow, $revents) = @_;
906	# $revents must be 1 here, no need to check	1810	# $revents must be 1 here, no need to check
907	sysread $term->{socket}, my $buf, 8192	1811	sysread $term->{socket}, my $buf, 8192
…		…
924		1828
925	Set the filedescriptor (not handle) to watch.	1829	Set the filedescriptor (not handle) to watch.
926		1830
927	=item $iow = $iow->events ($eventmask)	1831	=item $iow = $iow->events ($eventmask)
928		1832
929	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
930	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>.
931		1836
932	=item $iow = $iow->start	1837	=item $iow = $iow->start
933		1838
934	Start watching for requested events on the given handle.	1839	Start watching for requested events on the given handle.
935		1840
936	=item $iow = $iow->stop	1841	=item $iow = $iow->stop
937		1842
938	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.
939		1905
940	=back	1906	=back
941		1907
942	=head1 ENVIRONMENT	1908	=head1 ENVIRONMENT
943		1909
…		…
946	This variable controls the verbosity level of the perl extension. Higher	1912	This variable controls the verbosity level of the perl extension. Higher
947	numbers indicate more verbose output.	1913	numbers indicate more verbose output.
948		1914
949	=over 4	1915	=over 4
950		1916
951	=item =0 - only fatal messages	1917	=item == 0 - fatal messages
952		1918
953	=item =3 - script loading and management	1919	=item >= 3 - script loading and management
954		1920
955	=item =10 - all events received	1921	=item >=10 - all called hooks
		1922
		1923	=item >=11 - hook reutrn values
956		1924
957	=back	1925	=back
958		1926
959	=head1 AUTHOR	1927	=head1 AUTHOR
960		1928

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