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Revision 1.2 by root, Mon Jan 2 15:36:27 2006 UTC vs.
Revision 1.114 by root, Fri Jan 20 12:16:28 2006 UTC

		1	=encoding utf8
		2
1	=head1 NAME	3	=head1 NAME
2		4
3	urxvt - rxvt-unicode's embedded perl interpreter	5	@@RXVT_NAME@@perl - rxvt-unicode's embedded perl interpreter
4		6
5	=head1 SYNOPSIS	7	=head1 SYNOPSIS
6		8
7	Put your scripts into $LIBDIR/perl-init/, they will be loaded automatically.	9	# create a file grab_test in $HOME:
8
9	Each script will only be loaded once, even in urxvtd, and will be valid
10	globally.
11
12	Scripts are evaluated in a 'use strict' and 'use utf8' environment, and
13	thus must be written in utf-8.
14		10
15	sub on_sel_grab {	11	sub on_sel_grab {
16	warn "you selected ", $_[0]->selection;	12	warn "you selected ", $_[0]->selection;
		13	()
17	}	14	}
18		15
19	1	16	# start a @@RXVT_NAME@@ using it:
		17
		18	@@RXVT_NAME@@ --perl-lib $HOME -pe grab_test
20		19
21	=head1 DESCRIPTION	20	=head1 DESCRIPTION
22		21
		22	Everytime a terminal object gets created, extension scripts specified via
		23	the C<perl> resource are loaded and associated with it.
		24
		25	Scripts are compiled in a 'use strict' and 'use utf8' environment, and
		26	thus must be encoded as UTF-8.
		27
		28	Each script will only ever be loaded once, even in @@RXVT_NAME@@d, where
		29	scripts will be shared (but not enabled) for all terminals.
		30
		31	=head1 PREPACKAGED EXTENSIONS
		32
		33	This section describes the extensions delivered with this release. You can
		34	find them in F<@@RXVT_LIBDIR@@/urxvt/perl/>.
		35
		36	You can activate them like this:
		37
		38	@@RXVT_NAME@@ -pe <extensionname>
		39
		40	Or by adding them to the resource for extensions loaded by default:
		41
		42	URxvt.perl-ext-common: default,automove-background,selection-autotransform
		43
		44	=over 4
		45
		46	=item selection (enabled by default)
		47
		48	(More) intelligent selection. This extension tries to be more intelligent
		49	when the user extends selections (double-click and further clicks). Right
		50	now, it tries to select words, urls and complete shell-quoted
		51	arguments, which is very convenient, too, if your F<ls> supports
		52	C<--quoting-style=shell>.
		53
		54	A double-click usually selects the word under the cursor, further clicks
		55	will enlarge the selection.
		56
		57	The selection works by trying to match a number of regexes and displaying
		58	them in increasing order of length. You can add your own regexes by
		59	specifying resources of the form:
		60
		61	URxvt.selection.pattern-0: perl-regex
		62	URxvt.selection.pattern-1: perl-regex
		63	...
		64
		65	The index number (0, 1...) must not have any holes, and each regex must
		66	contain at least one pair of capturing parentheses, which will be used for
		67	the match. For example, the followign adds a regex that matches everything
		68	between two vertical bars:
		69
		70	URxvt.selection.pattern-0: \\|([^|]+)\\|
		71
		72	You can look at the source of the selection extension to see more
		73	interesting uses, such as parsing a line from beginning to end.
		74
		75	This extension also offers following bindable keyboard commands:
		76
		77	=over 4
		78
		79	=item rot13
		80
		81	Rot-13 the selection when activated. Used via keyboard trigger:
		82
		83	URxvt.keysym.C-M-r: perl:selection:rot13
		84
		85	=back
		86
		87	=item option-popup (enabled by default)
		88
		89	Binds a popup menu to Ctrl-Button2 that lets you toggle (some) options at
		90	runtime.
		91
		92	=item selection-popup (enabled by default)
		93
		94	Binds a popup menu to Ctrl-Button3 that lets you convert the selection
		95	text into various other formats/action (such as uri unescaping, perl
		96	evalution, 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 mark-urls
		168
		169	Uses per-line display filtering (C<on_line_update>) to underline urls and
		170	make them clickable. When middle-clicked, the program specified in the
		171	resource C<urlLauncher> (default C<x-www-browser>) will be started with
		172	the URL as first argument.
		173
		174	=item automove-background
		175
		176	This is basically a one-line extension that dynamically changes the background pixmap offset
		177	to the window position, in effect creating the same effect as pseudo transparency with
		178	a custom pixmap. No scaling is supported in this mode. Exmaple:
		179
		180	@@RXVT_NAME@@ -pixmap background.xpm -pe automove-background
		181
		182	=item block-graphics-to-ascii
		183
		184	A not very useful example of filtering all text output to the terminal,
		185	by replacing all line-drawing characters (U+2500 .. U+259F) by a
		186	similar-looking ascii character.
		187
		188	=item digital-clock
		189
		190	Displays a digital clock using the built-in overlay.
		191
		192	=item example-refresh-hooks
		193
		194	Displays a very simple digital clock in the upper right corner of the
		195	window. Illustrates overwriting the refresh callbacks to create your own
		196	overlays or changes.
		197
		198	=item selection-pastebin
		199
		200	This is a little rarely useful extension that Uploads the selection as
		201	textfile to a remote site (or does other things). (The implementation is
		202	not currently secure for use in a multiuser environment as it writes to
		203	F</tmp> directly.).
		204
		205	It listens to the C<selection-pastebin:remote-pastebin> keyboard command,
		206	i.e.
		207
		208	URxvt.keysym.C-M-e: perl:selection-pastebin:remote-pastebin
		209
		210	Pressing this combination runs a command with C<%> replaced by the name of
		211	the textfile. This command can be set via a resource:
		212
		213	URxvt.selection-pastebin.cmd: rsync -apP % ruth:/var/www/www.ta-sa.org/files/txt/.
		214
		215	And the default is likely not useful to anybody but the few people around
		216	here :)
		217
		218	The name of the textfile is the hex encoded md5 sum of the selection, so
		219	the same content should lead to the same filename.
		220
		221	After a successful upload the selection will be replaced by the text given
		222	in the C<selection-pastebin-url> resource (again, the % is the placeholder
		223	for the filename):
		224
		225	URxvt.selection-pastebin.url: http://www.ta-sa.org/files/txt/%
		226
		227	=back
		228
		229	=head1 API DOCUMENTATION
		230
		231	=head2 General API Considerations
		232
		233	All objects (such as terminals, time watchers etc.) are typical
		234	reference-to-hash objects. The hash can be used to store anything you
		235	like. All members starting with an underscore (such as C<_ptr> or
		236	C<_hook>) are reserved for internal uses and B<MUST NOT> be accessed or
		237	modified).
		238
		239	When objects are destroyed on the C++ side, the perl object hashes are
		240	emptied, so its best to store related objects such as time watchers and
		241	the like inside the terminal object so they get destroyed as soon as the
		242	terminal is destroyed.
		243
		244	Argument names also often indicate the type of a parameter. Here are some
		245	hints on what they mean:
		246
		247	=over 4
		248
		249	=item $text
		250
		251	Rxvt-unicodes special way of encoding text, where one "unicode" character
		252	always represents one screen cell. See L<ROW_t> for a discussion of this format.
		253
		254	=item $string
		255
		256	A perl text string, with an emphasis on I<text>. It can store all unicode
		257	characters and is to be distinguished with text encoded in a specific
		258	encoding (often locale-specific) and binary data.
		259
		260	=item $octets
		261
		262	Either binary data or - more common - a text string encoded in a
		263	locale-specific way.
		264
		265	=back
		266
		267	=head2 Extension Objects
		268
		269	Very perl extension is a perl class. A separate perl object is created
		270	for each terminal and each extension and passed as the first parameter to
		271	hooks. So extensions can use their C<$self> object without having to think
		272	about other extensions, with the exception of methods and members that
		273	begin with an underscore character C<_>: these are reserved for internal
		274	use.
		275
		276	Although it isn't a C<urxvt::term> object, you can call all methods of the
		277	C<urxvt::term> class on this object.
		278
		279	It has the following methods and data members:
		280
		281	=over 4
		282
		283	=item $urxvt_term = $self->{term}
		284
		285	Returns the C<urxvt::term> object associated with this instance of the
		286	extension. This member I<must not> be changed in any way.
		287
		288	=item $self->enable ($hook_name => $cb, [$hook_name => $cb..])
		289
		290	Dynamically enable the given hooks (named without the C<on_> prefix) for
		291	this extension, replacing any previous hook. This is useful when you want
		292	to overwrite time-critical hooks only temporarily.
		293
		294	=item $self->disable ($hook_name[, $hook_name..])
		295
		296	Dynamically disable the given hooks.
		297
		298	=back
		299
23	=head2 Hooks	300	=head2 Hooks
24		301
25	The following subroutines can be declared in loaded scripts, and will be called	302	The following subroutines can be declared in extension files, and will be
26	whenever the relevant event happens.	303	called whenever the relevant event happens.
27		304
28	All of them must return a boolean value. If it is true, then the event	305	The first argument passed to them is an extension oject as described in
29	counts as being I<consumed>, and the invocation of other hooks is skipped,	306	the in the C<Extension Objects> section.
		307
		308	B<All> of these hooks must return a boolean value. If any of the called
		309	hooks returns true, then the event counts as being I<consumed>, and the
30	and the relevant action might not be carried out by the C++ code.	310	relevant action might not be carried out by the C++ code.
31		311
32	When in doubt, return a false value (preferably C<()>).	312	I<< When in doubt, return a false value (preferably C<()>). >>
33		313
34	=over 4	314	=over 4
35		315
36	=item on_init $term	316	=item on_init $term
37		317
38	Called after a new terminal object has been initialized, but before	318	Called after a new terminal object has been initialized, but before
39	windows are created or the command gets run.	319	windows are created or the command gets run. Most methods are unsafe to
		320	call or deliver senseless data, as terminal size and other characteristics
		321	have not yet been determined. You can safely query and change resources
		322	and options, though. For many purposes the C<on_start> hook is a better
		323	place.
		324
		325	=item on_start $term
		326
		327	Called at the very end of initialisation of a new terminal, just before
		328	trying to map (display) the toplevel and returning to the mainloop.
		329
		330	=item on_destroy $term
		331
		332	Called whenever something tries to destroy terminal, before doing anything
		333	yet. If this hook returns true, then destruction is skipped, but this is
		334	rarely a good idea.
40		335
41	=item on_reset $term	336	=item on_reset $term
42		337
43	Called after the screen is "reset" for any reason, such as resizing or	338	Called after the screen is "reset" for any reason, such as resizing or
44	control sequences. Here is where you can react on changes to size-related	339	control sequences. Here is where you can react on changes to size-related
45	variables.	340	variables.
46		341
47	=item on_start $term	342	=item on_child_start $term, $pid
48		343
49	Called at the very end of initialisation of a new terminal, just before	344	Called just after the child process has been C<fork>ed.
50	returning to the mainloop.	345
		346	=item on_child_exit $term, $status
		347
		348	Called just after the child process has exited. C<$status> is the status
		349	from C<waitpid>.
51		350
52	=item on_sel_make $term, $eventtime	351	=item on_sel_make $term, $eventtime
53		352
54	Called whenever a selection has been made by the user, but before the	353	Called whenever a selection has been made by the user, but before the
55	selection text is copied, so changes to the beginning, end or type of the	354	selection text is copied, so changes to the beginning, end or type of the
…		…
64	requested from the server. The selection text can be queried and changed	363	requested from the server. The selection text can be queried and changed
65	by calling C<< $term->selection >>.	364	by calling C<< $term->selection >>.
66		365
67	Returning a true value aborts selection grabbing. It will still be hilighted.	366	Returning a true value aborts selection grabbing. It will still be hilighted.
68		367
69	=item on_focus_in $term	368	=item on_sel_extend $term
70		369
71	Called whenever the window gets the keyboard focus, before urxvt does	370	Called whenever the user tries to extend the selection (e.g. with a double
72	focus in processing.	371	click) and is either supposed to return false (normal operation), or
		372	should extend the selection itelf and return true to suppress the built-in
		373	processing. This can happen multiple times, as long as the callback
		374	returns true, it will be called on every further click by the user and is
		375	supposed to enlarge the selection more and more, if possible.
73		376
74	=item on_focus_out $term	377	See the F<selection> example extension.
75
76	Called wheneever the window loses keyboard focus, before urxvt does focus
77	out processing.
78		378
79	=item on_view_change $term, $offset	379	=item on_view_change $term, $offset
80		380
81	Called whenever the view offset changes, i..e the user or program	381	Called whenever the view offset changes, i..e the user or program
82	scrolls. Offset C<0> means display the normal terminal, positive values	382	scrolls. Offset C<0> means display the normal terminal, positive values
…		…
90		390
91	It is called before lines are scrolled out (so rows 0 .. min ($lines - 1,	391	It is called before lines are scrolled out (so rows 0 .. min ($lines - 1,
92	$nrow - 1) represent the lines to be scrolled out). C<$saved> is the total	392	$nrow - 1) represent the lines to be scrolled out). C<$saved> is the total
93	number of lines that will be in the scrollback buffer.	393	number of lines that will be in the scrollback buffer.
94		394
95	=item on_tty_activity $term *NYI*	395	=item on_osc_seq $term, $string
96		396
97	Called whenever the program(s) running in the urxvt window send output.	397	Called whenever the B<ESC ] 777 ; string ST> command sequence (OSC =
		398	operating system command) is processed. Cursor position and other state
		399	information is up-to-date when this happens. For interoperability, the
		400	string should start with the extension name and a colon, to distinguish
		401	it from commands for other extensions, and this might be enforced in the
		402	future.
		403
		404	Be careful not ever to trust (in a security sense) the data you receive,
		405	as its source can not easily be controleld (e-mail content, messages from
		406	other users on the same system etc.).
		407
		408	=item on_add_lines $term, $string
		409
		410	Called whenever text is about to be output, with the text as argument. You
		411	can filter/change and output the text yourself by returning a true value
		412	and calling C<< $term->scr_add_lines >> yourself. Please note that this
		413	might be very slow, however, as your hook is called for B<all> text being
		414	output.
		415
		416	=item on_tt_write $term, $octets
		417
		418	Called whenever some data is written to the tty/pty and can be used to
		419	suppress or filter tty input.
		420
		421	=item on_line_update $term, $row
		422
		423	Called whenever a line was updated or changed. Can be used to filter
		424	screen output (e.g. underline urls or other useless stuff). Only lines
		425	that are being shown will be filtered, and, due to performance reasons,
		426	not always immediately.
		427
		428	The row number is always the topmost row of the line if the line spans
		429	multiple rows.
		430
		431	Please note that, if you change the line, then the hook might get called
		432	later with the already-modified line (e.g. if unrelated parts change), so
		433	you cannot just toggle rendition bits, but only set them.
98		434
99	=item on_refresh_begin $term	435	=item on_refresh_begin $term
100		436
101	Called just before the screen gets redrawn. Can be used for overlay	437	Called just before the screen gets redrawn. Can be used for overlay
102	or similar effects by modify terminal contents in refresh_begin, and	438	or similar effects by modify terminal contents in refresh_begin, and
…		…
105		441
106	=item on_refresh_end $term	442	=item on_refresh_end $term
107		443
108	Called just after the screen gets redrawn. See C<on_refresh_begin>.	444	Called just after the screen gets redrawn. See C<on_refresh_begin>.
109		445
		446	=item on_keyboard_command $term, $string
		447
		448	Called whenever the user presses a key combination that has a
		449	C<perl:string> action bound to it (see description of the B<keysym>
		450	resource in the @@RXVT_NAME@@(1) manpage).
		451
		452	=item on_x_event $term, $event
		453
		454	Called on every X event received on the vt window (and possibly other
		455	windows). Should only be used as a last resort. Most event structure
		456	members are not passed.
		457
		458	=item on_focus_in $term
		459
		460	Called whenever the window gets the keyboard focus, before rxvt-unicode
		461	does focus in processing.
		462
		463	=item on_focus_out $term
		464
		465	Called wheneever the window loses keyboard focus, before rxvt-unicode does
		466	focus out processing.
		467
		468	=item on_configure_notify $term, $event
		469
		470	=item on_key_press $term, $event, $keysym, $octets
		471
		472	=item on_key_release $term, $event, $keysym
		473
		474	=item on_button_press $term, $event
		475
		476	=item on_button_release $term, $event
		477
		478	=item on_motion_notify $term, $event
		479
		480	=item on_map_notify $term, $event
		481
		482	=item on_unmap_notify $term, $event
		483
		484	Called whenever the corresponding X event is received for the terminal If
		485	the hook returns true, then the even will be ignored by rxvt-unicode.
		486
		487	The event is a hash with most values as named by Xlib (see the XEvent
		488	manpage), with the additional members C<row> and C<col>, which are the row
		489	and column under the mouse cursor.
		490
		491	C<on_key_press> additionally receives the string rxvt-unicode would
		492	output, if any, in locale-specific encoding.
		493
		494	subwindow.
		495
		496	=item on_client_message $term, $event
		497
		498	=item on_wm_protocols $term, $event
		499
		500	=item on_wm_delete_window $term, $event
		501
		502	Called when various types of ClientMessage events are received (all with
		503	format=32, WM_PROTOCOLS or WM_PROTOCOLS:WM_DELETE_WINDOW).
		504
		505	=back
		506
		507	=cut
		508
		509	package urxvt;
		510
		511	use utf8;
		512	use strict;
		513	use Carp ();
		514	use Scalar::Util ();
		515	use List::Util ();
		516
		517	our $VERSION = 1;
		518	our $TERM;
		519	our @TERM_INIT;
		520	our @TERM_EXT;
		521	our @HOOKNAME;
		522	our %HOOKTYPE = map +($HOOKNAME[$_] => $_), 0..$#HOOKNAME;
		523	our %OPTION;
		524
		525	our $LIBDIR;
		526	our $RESNAME;
		527	our $RESCLASS;
		528	our $RXVTNAME;
		529
		530	=head2 Variables in the C<urxvt> Package
		531
		532	=over 4
		533
		534	=item $urxvt::LIBDIR
		535
		536	The rxvt-unicode library directory, where, among other things, the perl
		537	modules and scripts are stored.
		538
		539	=item $urxvt::RESCLASS, $urxvt::RESCLASS
		540
		541	The resource class and name rxvt-unicode uses to look up X resources.
		542
		543	=item $urxvt::RXVTNAME
		544
		545	The basename of the installed binaries, usually C<urxvt>.
		546
		547	=item $urxvt::TERM
		548
		549	The current terminal. This variable stores the current C<urxvt::term>
		550	object, whenever a callback/hook is executing.
		551
		552	=item @urxvt::TERM_INIT
		553
		554	All coderefs in this array will be called as methods of the next newly
		555	created C<urxvt::term> object (during the C<on_init> phase). The array
		556	gets cleared before the codereferences that were in it are being executed,
		557	so coderefs can push themselves onto it again if they so desire.
		558
		559	This complements to the perl-eval commandline option, but gets executed
		560	first.
		561
		562	=item @urxvt::TERM_EXT
		563
		564	Works similar to C<@TERM_INIT>, but contains perl package/class names, which
		565	get registered as normal extensions after calling the hooks in C<@TERM_INIT>
		566	but before other extensions. Gets cleared just like C<@TERM_INIT>.
		567
110	=back	568	=back
111		569
112	=head2 Functions in the C<urxvt> Package	570	=head2 Functions in the C<urxvt> Package
113		571
114	=over 4	572	=over 4
…		…
119	costs! The only time this is acceptable is when the terminal process	577	costs! The only time this is acceptable is when the terminal process
120	starts up.	578	starts up.
121		579
122	=item urxvt::warn $string	580	=item urxvt::warn $string
123		581
124	Calls C<rxvt_warn> witht eh given string which should not include a	582	Calls C<rxvt_warn> with the given string which should not include a
125	newline. The module also overwrites the C<warn> builtin with a function	583	newline. The module also overwrites the C<warn> builtin with a function
126	that calls this function.	584	that calls this function.
127		585
128	Using this function has the advantage that its output ends up in the	586	Using this function has the advantage that its output ends up in the
129	correct place, e.g. on stderr of the connecting urxvtc client.	587	correct place, e.g. on stderr of the connecting urxvtc client.
130		588
131	=item $cellwidth = urxvt::wcswidth $string	589	Messages have a size limit of 1023 bytes currently.
132
133	Returns the number of screen-cells this string would need. Correctly
134	accounts for wide and combining characters.
135		590
136	=item $time = urxvt::NOW	591	=item $time = urxvt::NOW
137		592
138	Returns the "current time" (as per the event loop).	593	Returns the "current time" (as per the event loop).
139		594
140	=cut	595	=item urxvt::CurrentTime
141		596
142	package urxvt;	597	=item urxvt::ShiftMask, LockMask, ControlMask, Mod1Mask, Mod2Mask,
		598	Mod3Mask, Mod4Mask, Mod5Mask, Button1Mask, Button2Mask, Button3Mask,
		599	Button4Mask, Button5Mask, AnyModifier
143		600
144	use strict;	601	=item urxvt::NoEventMask, KeyPressMask, KeyReleaseMask,
		602	ButtonPressMask, ButtonReleaseMask, EnterWindowMask, LeaveWindowMask,
		603	PointerMotionMask, PointerMotionHintMask, Button1MotionMask, Button2MotionMask,
		604	Button3MotionMask, Button4MotionMask, Button5MotionMask, ButtonMotionMask,
		605	KeymapStateMask, ExposureMask, VisibilityChangeMask, StructureNotifyMask,
		606	ResizeRedirectMask, SubstructureNotifyMask, SubstructureRedirectMask,
		607	FocusChangeMask, PropertyChangeMask, ColormapChangeMask, OwnerGrabButtonMask
145		608
146	our $term;	609	=item urxvt::KeyPress, KeyRelease, ButtonPress, ButtonRelease, MotionNotify,
147	our @HOOKNAME;	610	EnterNotify, LeaveNotify, FocusIn, FocusOut, KeymapNotify, Expose,
148	our $LIBDIR;	611	GraphicsExpose, NoExpose, VisibilityNotify, CreateNotify, DestroyNotify,
		612	UnmapNotify, MapNotify, MapRequest, ReparentNotify, ConfigureNotify,
		613	ConfigureRequest, GravityNotify, ResizeRequest, CirculateNotify,
		614	CirculateRequest, PropertyNotify, SelectionClear, SelectionRequest,
		615	SelectionNotify, ColormapNotify, ClientMessage, MappingNotify
		616
		617	Various constants for use in X calls and event processing.
		618
		619	=back
		620
		621	=head2 RENDITION
		622
		623	Rendition bitsets contain information about colour, font, font styles and
		624	similar information for each screen cell.
		625
		626	The following "macros" deal with changes in rendition sets. You should
		627	never just create a bitset, you should always modify an existing one,
		628	as they contain important information required for correct operation of
		629	rxvt-unicode.
		630
		631	=over 4
		632
		633	=item $rend = urxvt::DEFAULT_RSTYLE
		634
		635	Returns the default rendition, as used when the terminal is starting up or
		636	being reset. Useful as a base to start when creating renditions.
		637
		638	=item $rend = urxvt::OVERLAY_RSTYLE
		639
		640	Return the rendition mask used for overlays by default.
		641
		642	=item $rendbit = urxvt::RS_Bold, RS_Italic, RS_Blink, RS_RVid, RS_Uline
		643
		644	Return the bit that enabled bold, italic, blink, reverse-video and
		645	underline, respectively. To enable such a style, just logically OR it into
		646	the bitset.
		647
		648	=item $foreground = urxvt::GET_BASEFG $rend
		649
		650	=item $background = urxvt::GET_BASEBG $rend
		651
		652	Return the foreground/background colour index, respectively.
		653
		654	=item $rend = urxvt::SET_FGCOLOR $rend, $new_colour
		655
		656	=item $rend = urxvt::SET_BGCOLOR $rend, $new_colour
		657
		658	Replace the foreground/background colour in the rendition mask with the
		659	specified one.
		660
		661	=item $value = urxvt::GET_CUSTOM $rend
		662
		663	Return the "custom" value: Every rendition has 5 bits for use by
		664	extensions. They can be set and changed as you like and are initially
		665	zero.
		666
		667	=item $rend = urxvt::SET_CUSTOM $rend, $new_value
		668
		669	Change the custom value.
		670
		671	=back
		672
		673	=cut
149		674
150	BEGIN {	675	BEGIN {
151	urxvt->bootstrap;
152
153	# overwrite perl's warn	676	# overwrite perl's warn
154	*CORE::GLOBAL::warn = sub {	677	*CORE::GLOBAL::warn = sub {
155	my $msg = join "", @_;	678	my $msg = join "", @_;
156	$msg .= "\n"	679	$msg .= "\n"
157	unless $msg =~ /\n$/;	680	unless $msg =~ /\n$/;
158	urxvt::warn ($msg);	681	urxvt::warn ($msg);
159	};	682	};
160	}	683	}
161		684
162	my $verbosity = $ENV{URXVT_PERL_VERBOSITY} || 10;	685	my $verbosity = $ENV{URXVT_PERL_VERBOSITY};
163		686
164	sub verbose {	687	sub verbose {
165	my ($level, $msg) = @_;	688	my ($level, $msg) = @_;
166	warn "$msg\n"; #d#	689	warn "$msg\n" if $level <= $verbosity;
167	}	690	}
168		691
169	my @invoke_cb;	692	my %extension_pkg;
		693
		694	# load a single script into its own package, once only
		695	sub extension_package($) {
		696	my ($path) = @_;
		697
		698	$extension_pkg{$path} ||= do {
		699	$path =~ /([^\/\\]+)$/;
		700	my $pkg = $1;
		701	$pkg =~ s/[^[:word:]]/_/g;
		702	$pkg = "urxvt::ext::$pkg";
		703
		704	verbose 3, "loading extension '$path' into package '$pkg'";
		705
		706	open my $fh, "<:raw", $path
		707	or die "$path: $!";
		708
		709	my $source =
		710	"package $pkg; use strict; use utf8;\n"
		711	. "#line 1 \"$path\"\n{\n"
		712	. (do { local $/; <$fh> })
		713	. "\n};\n1";
		714
		715	eval $source
		716	or die "$path: $@";
		717
		718	$pkg
		719	}
		720	}
		721
		722	our $retval; # return value for urxvt
170		723
171	# called by the rxvt core	724	# called by the rxvt core
172	sub invoke {	725	sub invoke {
173	local $term = shift;	726	local $TERM = shift;
174	my $htype = shift;	727	my $htype = shift;
175		728
176	my $cb = $invoke_cb[$htype];	729	if ($htype == 0) { # INIT
		730	my @dirs = ((split /:/, $TERM->resource ("perl_lib")), "$LIBDIR/perl");
		731
		732	my %ext_arg;
177		733
178	verbose 10, "$HOOKNAME[$htype] (" . (join ", ", $term, @_) . ")"	734	{
179	if $verbosity >= 10;	735	my @init = @TERM_INIT;
		736	@TERM_INIT = ();
		737	$_->($TERM) for @init;
		738	my @pkg = @TERM_EXT;
		739	@TERM_EXT = ();
		740	$TERM->register_package ($_) for @pkg;
		741	}
180		742
		743	for (grep $_, map { split /,/, $TERM->resource ("perl_ext_$_") } 1, 2) {
		744	if ($_ eq "default") {
		745	$ext_arg{$_} ||= [] for qw(selection option-popup selection-popup searchable-scrollback);
		746	} elsif (/^-(.*)$/) {
		747	delete $ext_arg{$1};
		748	} elsif (/^([^<]+)<(.*)>$/) {
		749	push @{ $ext_arg{$1} }, $2;
		750	} else {
		751	$ext_arg{$_} ||= [];
		752	}
		753	}
		754
181	while (my ($k, $v) = each %$cb) {	755	while (my ($ext, $argv) = each %ext_arg) {
182	return 1 if $v->($term, @_);	756	my @files = grep -f $_, map "$_/$ext", @dirs;
		757
		758	if (@files) {
		759	$TERM->register_package (extension_package $files[0], $argv);
		760	} else {
		761	warn "perl extension '$ext' not found in perl library search path\n";
		762	}
		763	}
		764
		765	eval "#line 1 \"--perl-eval resource/argument\"\n" . $TERM->resource ("perl_eval");
		766	warn $@ if $@;
183	}	767	}
184		768
		769	$retval = undef;
		770
		771	if (my $cb = $TERM->{_hook}[$htype]) {
		772	verbose 10, "$HOOKNAME[$htype] (" . (join ", ", $TERM, @_) . ")"
		773	if $verbosity >= 10;
		774
		775	keys %$cb;
		776
		777	while (my ($pkg, $cb) = each %$cb) {
		778	my $retval_ = eval { $cb->($TERM->{_pkg}{$pkg}, @_) };
		779	$retval ||= $retval_;
		780
		781	if ($@) {
		782	$TERM->ungrab; # better to lose the grab than the session
		783	warn $@;
		784	}
		785	}
		786
		787	verbose 11, "$HOOKNAME[$htype] returning <$retval>"
		788	if $verbosity >= 11;
185	0	789	}
		790
		791	if ($htype == 1) { # DESTROY
		792	# clear package objects
		793	%$_ = () for values %{ $TERM->{_pkg} };
		794
		795	# clear package
		796	%$TERM = ();
		797	}
		798
		799	$retval
186	}	800	}
		801
		802	# urxvt::term::extension
		803
		804	package urxvt::term::extension;
		805
		806	sub enable {
		807	my ($self, %hook) = @_;
		808	my $pkg = $self->{_pkg};
		809
		810	while (my ($name, $cb) = each %hook) {
		811	my $htype = $HOOKTYPE{uc $name};
		812	defined $htype
		813	or Carp::croak "unsupported hook type '$name'";
		814
		815	$self->set_should_invoke ($htype, +1)
		816	unless exists $self->{term}{_hook}[$htype]{$pkg};
		817
		818	$self->{term}{_hook}[$htype]{$pkg} = $cb;
		819	}
		820	}
		821
		822	sub disable {
		823	my ($self, @hook) = @_;
		824	my $pkg = $self->{_pkg};
		825
		826	for my $name (@hook) {
		827	my $htype = $HOOKTYPE{uc $name};
		828	defined $htype
		829	or Carp::croak "unsupported hook type '$name'";
		830
		831	$self->set_should_invoke ($htype, -1)
		832	if delete $self->{term}{_hook}[$htype]{$pkg};
		833	}
		834	}
		835
		836	our $AUTOLOAD;
		837
		838	sub AUTOLOAD {
		839	$AUTOLOAD =~ /:([^:]+)$/
		840	or die "FATAL: \$AUTOLOAD '$AUTOLOAD' unparsable";
		841
		842	eval qq{
		843	sub $AUTOLOAD {
		844	my \$proxy = shift;
		845	\$proxy->{term}->$1 (\@_)
		846	}
		847	1
		848	} or die "FATAL: unable to compile method forwarder: $@";
		849
		850	goto &$AUTOLOAD;
		851	}
		852
		853	sub DESTROY {
		854	# nop
		855	}
		856
		857	# urxvt::destroy_hook
		858
		859	sub urxvt::destroy_hook::DESTROY {
		860	${$_[0]}->();
		861	}
		862
		863	sub urxvt::destroy_hook(&) {
		864	bless \shift, urxvt::destroy_hook::
		865	}
		866
		867	package urxvt::anyevent;
		868
		869	=head2 The C<urxvt::anyevent> Class
		870
		871	The sole purpose of this class is to deliver an interface to the
		872	C<AnyEvent> module - any module using it will work inside urxvt without
		873	further programming. The only exception is that you cannot wait on
		874	condition variables, but non-blocking condvar use is ok. What this means
		875	is that you cannot use blocking APIs, but the non-blocking variant should
		876	work.
		877
		878	=cut
		879
		880	our $VERSION = 1;
		881
		882	$INC{"urxvt/anyevent.pm"} = 1; # mark us as there
		883	push @AnyEvent::REGISTRY, [urxvt => urxvt::anyevent::];
		884
		885	sub timer {
		886	my ($class, %arg) = @_;
		887
		888	my $cb = $arg{cb};
		889
		890	urxvt::timer
		891	->new
		892	->start (urxvt::NOW + $arg{after})
		893	->cb (sub {
		894	$_[0]->stop; # need to cancel manually
		895	$cb->();
		896	})
		897	}
		898
		899	sub io {
		900	my ($class, %arg) = @_;
		901
		902	my $cb = $arg{cb};
		903
		904	bless [$arg{fh}, urxvt::iow
		905	->new
		906	->fd (fileno $arg{fh})
		907	->events (($arg{poll} =~ /r/ ? 1 : 0)
		908	| ($arg{poll} =~ /w/ ? 2 : 0))
		909	->start
		910	->cb (sub {
		911	$cb->(($_[1] & 1 ? 'r' : '')
		912	. ($_[1] & 2 ? 'w' : ''));
		913	})],
		914	urxvt::anyevent::
		915	}
		916
		917	sub DESTROY {
		918	$_[0][1]->stop;
		919	}
		920
		921	sub condvar {
		922	bless \my $flag, urxvt::anyevent::condvar::
		923	}
		924
		925	sub urxvt::anyevent::condvar::broadcast {
		926	${$_[0]}++;
		927	}
		928
		929	sub urxvt::anyevent::condvar::wait {
		930	unless (${$_[0]}) {
		931	Carp::croak "AnyEvent->condvar blocking wait unsupported in urxvt, use a non-blocking API";
		932	}
		933	}
		934
		935	package urxvt::term;
		936
		937	=head2 The C<urxvt::term> Class
		938
		939	=over 4
		940
		941	=cut
187		942
188	# find on_xxx subs in the package and register them	943	# find on_xxx subs in the package and register them
189	# as hooks	944	# as hooks
190	sub register_package($) {	945	sub register_package {
191	my ($pkg) = @_;	946	my ($self, $pkg, $argv) = @_;
192		947
		948	no strict 'refs';
		949
		950	urxvt::verbose 6, "register package $pkg to $self";
		951
		952	@{"$pkg\::ISA"} = urxvt::term::extension::;
		953
		954	my $proxy = bless {
		955	_pkg => $pkg,
		956	argv => $argv,
		957	}, $pkg;
		958	Scalar::Util::weaken ($proxy->{term} = $self);
		959
		960	$self->{_pkg}{$pkg} = $proxy;
		961
193	for my $hook (0.. $#HOOKNAME) {	962	for my $name (@HOOKNAME) {
194	my $name = $HOOKNAME[$hook];
195
196	my $ref = $pkg->can ("on_" . lc $name)	963	if (my $ref = $pkg->can ("on_" . lc $name)) {
197	or next;	964	$proxy->enable ($name => $ref);
198		965	}
199	$invoke_cb[$hook]{$ref*1} = $ref;
200	set_should_invoke $hook, 1;
201	}	966	}
202	}	967	}
203		968
204	my $script_pkg = "script0000";	969	=item $term = new urxvt::term $envhashref, $rxvtname, [arg...]
205	my %script_pkg;
206		970
207	# load a single script into its own package, once only	971	Creates a new terminal, very similar as if you had started it with system
208	sub load_script($) {	972	C<$rxvtname, arg...>. C<$envhashref> must be a reference to a C<%ENV>-like
209	my ($path) = @_;	973	hash which defines the environment of the new terminal.
210		974
211	$script_pkg{$path} ||= do {	975	Croaks (and probably outputs an error message) if the new instance
212	my $pkg = $script_pkg++;	976	couldn't be created. Returns C<undef> if the new instance didn't
213	verbose 3, "loading script '$path' into package '$pkg'";	977	initialise perl, and the terminal object otherwise. The C<init> and
		978	C<start> hooks will be called during this call.
214		979
215	open my $fh, "<:raw", $path	980	=cut
216	or die "$path: $!";
217		981
218	eval "package $pkg; use strict; use utf8;\n"	982	sub new {
219	. "#line 1 \"$path\"\n"	983	my ($class, $env, @args) = @_;
220	. do { local $/; <$fh> }
221	or die "$path: $@";
222		984
223	register_package $pkg;	985	_new ([ map "$_=$env->{$_}", keys %$env ], @args);
224
225	$pkg
226	};
227	}	986	}
228		987
229	load_script $_ for grep -f $_, <$LIBDIR/perl-ext/*>;	988	=item $term->destroy
230		989
		990	Destroy the terminal object (close the window, free resources
		991	etc.). Please note that @@RXVT_NAME@@ will not exit as long as any event
		992	watchers (timers, io watchers) are still active.
231		993
232	=back	994	=item $term->exec_async ($cmd[, @args])
233		995
234	=head2 The C<urxvt::term> Class	996	Works like the combination of the C<fork>/C<exec> builtins, which executes
		997	("starts") programs in the background. This function takes care of setting
		998	the user environment before exec'ing the command (e.g. C<PATH>) and should
		999	be preferred over explicit calls to C<exec> or C<system>.
235		1000
236	=over 4	1001	Returns the pid of the subprocess or C<undef> on error.
		1002
		1003	=cut
		1004
		1005	sub exec_async {
		1006	my $self = shift;
		1007
		1008	my $pid = fork;
		1009
		1010	return $pid
		1011	if !defined $pid or $pid;
		1012
		1013	%ENV = %{ $self->env };
		1014
		1015	exec @_;
		1016	urxvt::_exit 255;
		1017	}
		1018
		1019	=item $isset = $term->option ($optval[, $set])
		1020
		1021	Returns true if the option specified by C<$optval> is enabled, and
		1022	optionally change it. All option values are stored by name in the hash
		1023	C<%urxvt::OPTION>. Options not enabled in this binary are not in the hash.
		1024
		1025	Here is a a likely non-exhaustive list of option names, please see the
		1026	source file F</src/optinc.h> to see the actual list:
		1027
		1028	borderLess console cursorBlink cursorUnderline hold iconic insecure
		1029	intensityStyles jumpScroll loginShell mapAlert meta8 mouseWheelScrollPage
		1030	override-redirect pastableTabs pointerBlank reverseVideo scrollBar
		1031	scrollBar_floating scrollBar_right scrollTtyKeypress scrollTtyOutput
		1032	scrollWithBuffer secondaryScreen secondaryScroll skipBuiltinGlyphs
		1033	transparent tripleclickwords utmpInhibit visualBell
		1034
		1035	=item $value = $term->resource ($name[, $newval])
		1036
		1037	Returns the current resource value associated with a given name and
		1038	optionally sets a new value. Setting values is most useful in the C<init>
		1039	hook. Unset resources are returned and accepted as C<undef>.
		1040
		1041	The new value must be properly encoded to a suitable character encoding
		1042	before passing it to this method. Similarly, the returned value may need
		1043	to be converted from the used encoding to text.
		1044
		1045	Resource names are as defined in F<src/rsinc.h>. Colours can be specified
		1046	as resource names of the form C<< color+<index> >>, e.g. C<color+5>. (will
		1047	likely change).
		1048
		1049	Please note that resource strings will currently only be freed when the
		1050	terminal is destroyed, so changing options frequently will eat memory.
		1051
		1052	Here is a a likely non-exhaustive list of resource names, not all of which
		1053	are supported in every build, please see the source file F</src/rsinc.h>
		1054	to see the actual list:
		1055
		1056	answerbackstring backgroundPixmap backspace_key boldFont boldItalicFont
		1057	borderLess color cursorBlink cursorUnderline cutchars delete_key
		1058	display_name embed ext_bwidth fade font geometry hold iconName
		1059	imFont imLocale inputMethod insecure int_bwidth intensityStyles
		1060	italicFont jumpScroll lineSpace loginShell mapAlert meta8 modifier
		1061	mouseWheelScrollPage name override_redirect pastableTabs path perl_eval
		1062	perl_ext_1 perl_ext_2 perl_lib pointerBlank pointerBlankDelay
		1063	preeditType print_pipe pty_fd reverseVideo saveLines scrollBar
		1064	scrollBar_align scrollBar_floating scrollBar_right scrollBar_thickness
		1065	scrollTtyKeypress scrollTtyOutput scrollWithBuffer scrollstyle
		1066	secondaryScreen secondaryScroll selectstyle shade term_name title
		1067	transient_for transparent transparent_all tripleclickwords utmpInhibit
		1068	visualBell
		1069
		1070	=cut
		1071
		1072	sub resource($$;$) {
		1073	my ($self, $name) = (shift, shift);
		1074	unshift @_, $self, $name, ($name =~ s/\s*\+\s*(\d+)$// ? $1 : 0);
		1075	&urxvt::term::_resource
		1076	}
		1077
		1078	=item $value = $term->x_resource ($pattern)
		1079
		1080	Returns the X-Resource for the given pattern, excluding the program or
		1081	class name, i.e. C<< $term->x_resource ("boldFont") >> should return the
		1082	same value as used by this instance of rxvt-unicode. Returns C<undef> if no
		1083	resource with that pattern exists.
		1084
		1085	This method should only be called during the C<on_start> hook, as there is
		1086	only one resource database per display, and later invocations might return
		1087	the wrong resources.
		1088
		1089	=item $success = $term->parse_keysym ($keysym_spec, $command_string)
		1090
		1091	Adds a keymap translation exactly as specified via a resource. See the
		1092	C<keysym> resource in the @@RXVT_NAME@@(1) manpage.
		1093
		1094	=item $rend = $term->rstyle ([$new_rstyle])
		1095
		1096	Return and optionally change the current rendition. Text that is output by
		1097	the terminal application will use this style.
		1098
		1099	=item ($row, $col) = $term->screen_cur ([$row, $col])
		1100
		1101	Return the current coordinates of the text cursor position and optionally
		1102	set it (which is usually bad as applications don't expect that).
237		1103
238	=item ($row, $col) = $term->selection_mark ([$row, $col])	1104	=item ($row, $col) = $term->selection_mark ([$row, $col])
239		1105
240	=item ($row, $col) = $term->selection_beg ([$row, $col])	1106	=item ($row, $col) = $term->selection_beg ([$row, $col])
241		1107
242	=item ($row, $col) = $term->selection_end ([$row, $col])	1108	=item ($row, $col) = $term->selection_end ([$row, $col])
243		1109
244	Return the current values of the selection mark, begin or end positions,	1110	Return the current values of the selection mark, begin or end positions,
245	and optionally set them to new values.	1111	and optionally set them to new values.
246		1112
		1113	=item $term->selection_make ($eventtime[, $rectangular])
		1114
		1115	Tries to make a selection as set by C<selection_beg> and
		1116	C<selection_end>. If C<$rectangular> is true (default: false), a
		1117	rectangular selection will be made. This is the prefered function to make
		1118	a selection.
		1119
247	=item $success = $term->selection_grab ($eventtime)	1120	=item $success = $term->selection_grab ($eventtime)
248		1121
249	Try to request the primary selection from the server (for example, as set	1122	Try to request the primary selection text from the server (for example, as
250	by the next method).	1123	set by the next method). No visual feedback will be given. This function
		1124	is mostly useful from within C<on_sel_grab> hooks.
251		1125
252	=item $oldtext = $term->selection ([$newtext])	1126	=item $oldtext = $term->selection ([$newtext])
253		1127
254	Return the current selection text and optionally replace it by C<$newtext>.	1128	Return the current selection text and optionally replace it by C<$newtext>.
255		1129
256	=item $term->scr_overlay ($x, $y, $text)	1130	=item $term->overlay_simple ($x, $y, $text)
257		1131
258	Create a simple multi-line overlay box. See the next method for details.	1132	Create a simple multi-line overlay box. See the next method for details.
259		1133
260	=cut	1134	=cut
261		1135
262	sub urxvt::term::scr_overlay {	1136	sub overlay_simple {
263	my ($self, $x, $y, $text) = @_;	1137	my ($self, $x, $y, $text) = @_;
264		1138
265	my @lines = split /\n/, $text;	1139	my @lines = split /\n/, $text;
266		1140
267	my $w = 0;	1141	my $w = List::Util::max map $self->strwidth ($_), @lines;
268	for (map urxvt::wcswidth $_, @lines) {	1142
269	$w = $_ if $w < $_;	1143	my $overlay = $self->overlay ($x, $y, $w, scalar @lines);
		1144	$overlay->set (0, $_, $lines[$_]) for 0.. $#lines;
		1145
		1146	$overlay
		1147	}
		1148
		1149	=item $term->overlay ($x, $y, $width, $height[, $rstyle[, $border]])
		1150
		1151	Create a new (empty) overlay at the given position with the given
		1152	width/height. C<$rstyle> defines the initial rendition style
		1153	(default: C<OVERLAY_RSTYLE>).
		1154
		1155	If C<$border> is C<2> (default), then a decorative border will be put
		1156	around the box.
		1157
		1158	If either C<$x> or C<$y> is negative, then this is counted from the
		1159	right/bottom side, respectively.
		1160
		1161	This method returns an urxvt::overlay object. The overlay will be visible
		1162	as long as the perl object is referenced.
		1163
		1164	The methods currently supported on C<urxvt::overlay> objects are:
		1165
		1166	=over 4
		1167
		1168	=item $overlay->set ($x, $y, $text, $rend)
		1169
		1170	Similar to C<< $term->ROW_t >> and C<< $term->ROW_r >> in that it puts
		1171	text in rxvt-unicode's special encoding and an array of rendition values
		1172	at a specific position inside the overlay.
		1173
		1174	=item $overlay->hide
		1175
		1176	If visible, hide the overlay, but do not destroy it.
		1177
		1178	=item $overlay->show
		1179
		1180	If hidden, display the overlay again.
		1181
		1182	=back
		1183
		1184	=item $popup = $term->popup ($event)
		1185
		1186	Creates a new C<urxvt::popup> object that implements a popup menu. The
		1187	C<$event> I<must> be the event causing the menu to pop up (a button event,
		1188	currently).
		1189
		1190	=cut
		1191
		1192	sub popup {
		1193	my ($self, $event) = @_;
		1194
		1195	$self->grab ($event->{time}, 1)
		1196	or return;
		1197
		1198	my $popup = bless {
		1199	term => $self,
		1200	event => $event,
		1201	}, urxvt::popup::;
		1202
		1203	Scalar::Util::weaken $popup->{term};
		1204
		1205	$self->{_destroy}{$popup} = urxvt::destroy_hook { $popup->{popup}->destroy };
		1206	Scalar::Util::weaken $self->{_destroy}{$popup};
		1207
		1208	$popup
		1209	}
		1210
		1211	=item $cellwidth = $term->strwidth ($string)
		1212
		1213	Returns the number of screen-cells this string would need. Correctly
		1214	accounts for wide and combining characters.
		1215
		1216	=item $octets = $term->locale_encode ($string)
		1217
		1218	Convert the given text string into the corresponding locale encoding.
		1219
		1220	=item $string = $term->locale_decode ($octets)
		1221
		1222	Convert the given locale-encoded octets into a perl string.
		1223
		1224	=item $term->scr_xor_span ($beg_row, $beg_col, $end_row, $end_col[, $rstyle])
		1225
		1226	XORs the rendition values in the given span with the provided value
		1227	(default: C<RS_RVid>), which I<MUST NOT> contain font styles. Useful in
		1228	refresh hooks to provide effects similar to the selection.
		1229
		1230	=item $term->scr_xor_rect ($beg_row, $beg_col, $end_row, $end_col[, $rstyle1[, $rstyle2]])
		1231
		1232	Similar to C<scr_xor_span>, but xors a rectangle instead. Trailing
		1233	whitespace will additionally be xored with the C<$rstyle2>, which defaults
		1234	to C<RS_RVid | RS_Uline>, which removes reverse video again and underlines
		1235	it instead. Both styles I<MUST NOT> contain font styles.
		1236
		1237	=item $term->scr_bell
		1238
		1239	Ring the bell!
		1240
		1241	=item $term->scr_add_lines ($string)
		1242
		1243	Write the given text string to the screen, as if output by the application
		1244	running inside the terminal. It may not contain command sequences (escape
		1245	codes), but is free to use line feeds, carriage returns and tabs. The
		1246	string is a normal text string, not in locale-dependent encoding.
		1247
		1248	Normally its not a good idea to use this function, as programs might be
		1249	confused by changes in cursor position or scrolling. Its useful inside a
		1250	C<on_add_lines> hook, though.
		1251
		1252	=item $term->cmd_parse ($octets)
		1253
		1254	Similar to C<scr_add_lines>, but the argument must be in the
		1255	locale-specific encoding of the terminal and can contain command sequences
		1256	(escape codes) that will be interpreted.
		1257
		1258	=item $term->tt_write ($octets)
		1259
		1260	Write the octets given in C<$data> to the tty (i.e. as program input). To
		1261	pass characters instead of octets, you should convert your strings first
		1262	to the locale-specific encoding using C<< $term->locale_encode >>.
		1263
		1264	=item $old_events = $term->pty_ev_events ([$new_events])
		1265
		1266	Replaces the event mask of the pty watcher by the given event mask. Can
		1267	be used to suppress input and output handling to the pty/tty. See the
		1268	description of C<< urxvt::timer->events >>. Make sure to always restore
		1269	the previous value.
		1270
		1271	=item $windowid = $term->parent
		1272
		1273	Return the window id of the toplevel window.
		1274
		1275	=item $windowid = $term->vt
		1276
		1277	Return the window id of the terminal window.
		1278
		1279	=item $term->vt_emask_add ($x_event_mask)
		1280
		1281	Adds the specified events to the vt event mask. Useful e.g. when you want
		1282	to receive pointer events all the times:
		1283
		1284	$term->vt_emask_add (urxvt::PointerMotionMask);
		1285
		1286	=item $window_width = $term->width
		1287
		1288	=item $window_height = $term->height
		1289
		1290	=item $font_width = $term->fwidth
		1291
		1292	=item $font_height = $term->fheight
		1293
		1294	=item $font_ascent = $term->fbase
		1295
		1296	=item $terminal_rows = $term->nrow
		1297
		1298	=item $terminal_columns = $term->ncol
		1299
		1300	=item $has_focus = $term->focus
		1301
		1302	=item $is_mapped = $term->mapped
		1303
		1304	=item $max_scrollback = $term->saveLines
		1305
		1306	=item $nrow_plus_saveLines = $term->total_rows
		1307
		1308	=item $topmost_scrollback_row = $term->top_row
		1309
		1310	Return various integers describing terminal characteristics.
		1311
		1312	=item $x_display = $term->display_id
		1313
		1314	Return the DISPLAY used by rxvt-unicode.
		1315
		1316	=item $lc_ctype = $term->locale
		1317
		1318	Returns the LC_CTYPE category string used by this rxvt-unicode.
		1319
		1320	=item $env = $term->env
		1321
		1322	Returns a copy of the environment in effect for the terminal as a hashref
		1323	similar to C<\%ENV>.
		1324
		1325	=cut
		1326
		1327	sub env {
		1328	if (my $env = $_[0]->_env) {
		1329	+{ map /^([^=]+)(?:=(.*))?$/s && ($1 => $2), @$env }
		1330	} else {
		1331	+{ %ENV }
270	}	1332	}
271
272	$self->scr_overlay_new ($x, $y, $w, scalar @lines);
273	$self->scr_overlay_set (0, $_, $lines[$_]) for 0.. $#lines;
274	}	1333	}
275		1334
276	=item $term->scr_overlay_new ($x, $y, $width, $height)	1335	=item $modifiermask = $term->ModLevel3Mask
277		1336
278	Create a new (empty) overlay at the given position with the given	1337	=item $modifiermask = $term->ModMetaMask
279	width/height. A border will be put around the box. If either C<$x> or
280	C<$y> is negative, then this is counted from the right/bottom side,
281	respectively.
282		1338
283	=item $term->scr_overlay_off	1339	=item $modifiermask = $term->ModNumLockMask
284		1340
285	Switch the overlay off again.	1341	Return the modifier masks corresponding to the "ISO Level 3 Shift" (often
		1342	AltGr), the meta key (often Alt) and the num lock key, if applicable.
286		1343
287	=item $term->scr_overlay_set_char ($x, $y, $char, $rend = OVERLAY_RSTYLE)	1344	=item $view_start = $term->view_start ([$newvalue])
288		1345
289	Put a single character (specified numerically) at the given overlay	1346	Returns the row number of the topmost displayed line. Maximum value is
290	position.	1347	C<0>, which displays the normal terminal contents. Lower values scroll
		1348	this many lines into the scrollback buffer.
291		1349
292	=item $term->scr_overlay_set ($x, $y, $text)	1350	=item $term->want_refresh
293		1351
294	Write a string at the given position into the overlay.	1352	Requests a screen refresh. At the next opportunity, rxvt-unicode will
		1353	compare the on-screen display with its stored representation. If they
		1354	differ, it redraws the differences.
		1355
		1356	Used after changing terminal contents to display them.
		1357
		1358	=item $text = $term->ROW_t ($row_number[, $new_text[, $start_col]])
		1359
		1360	Returns the text of the entire row with number C<$row_number>. Row C<0>
		1361	is the topmost terminal line, row C<< $term->$ncol-1 >> is the bottommost
		1362	terminal line. The scrollback buffer starts at line C<-1> and extends to
		1363	line C<< -$term->nsaved >>. Nothing will be returned if a nonexistent line
		1364	is requested.
		1365
		1366	If C<$new_text> is specified, it will replace characters in the current
		1367	line, starting at column C<$start_col> (default C<0>), which is useful
		1368	to replace only parts of a line. The font index in the rendition will
		1369	automatically be updated.
		1370
		1371	C<$text> is in a special encoding: tabs and wide characters that use more
		1372	than one cell when displayed are padded with urxvt::NOCHAR characters
		1373	(C<chr 65535>). Characters with combining characters and other characters
		1374	that do not fit into the normal tetx encoding will be replaced with
		1375	characters in the private use area.
		1376
		1377	You have to obey this encoding when changing text. The advantage is
		1378	that C<substr> and similar functions work on screen cells and not on
		1379	characters.
		1380
		1381	The methods C<< $term->special_encode >> and C<< $term->special_decode >>
		1382	can be used to convert normal strings into this encoding and vice versa.
		1383
		1384	=item $rend = $term->ROW_r ($row_number[, $new_rend[, $start_col]])
		1385
		1386	Like C<< $term->ROW_t >>, but returns an arrayref with rendition
		1387	bitsets. Rendition bitsets contain information about colour, font, font
		1388	styles and similar information. See also C<< $term->ROW_t >>.
		1389
		1390	When setting rendition, the font mask will be ignored.
		1391
		1392	See the section on RENDITION, above.
		1393
		1394	=item $length = $term->ROW_l ($row_number[, $new_length])
		1395
		1396	Returns the number of screen cells that are in use ("the line
		1397	length"). Unlike the urxvt core, this returns C<< $term->ncol >> if the
		1398	line is joined with the following one.
		1399
		1400	=item $bool = $term->is_longer ($row_number)
		1401
		1402	Returns true if the row is part of a multiple-row logical "line" (i.e.
		1403	joined with the following row), which means all characters are in use
		1404	and it is continued on the next row (and possibly a continuation of the
		1405	previous row(s)).
		1406
		1407	=item $line = $term->line ($row_number)
		1408
		1409	Create and return a new C<urxvt::line> object that stores information
		1410	about the logical line that row C<$row_number> is part of. It supports the
		1411	following methods:
		1412
		1413	=over 4
		1414
		1415	=item $text = $line->t ([$new_text])
		1416
		1417	Returns or replaces the full text of the line, similar to C<ROW_t>
		1418
		1419	=item $rend = $line->r ([$new_rend])
		1420
		1421	Returns or replaces the full rendition array of the line, similar to C<ROW_r>
		1422
		1423	=item $length = $line->l
		1424
		1425	Returns the length of the line in cells, similar to C<ROW_l>.
		1426
		1427	=item $rownum = $line->beg
		1428
		1429	=item $rownum = $line->end
		1430
		1431	Return the row number of the first/last row of the line, respectively.
		1432
		1433	=item $offset = $line->offset_of ($row, $col)
		1434
		1435	Returns the character offset of the given row|col pair within the logical
		1436	line. Works for rows outside the line, too, and returns corresponding
		1437	offsets outside the string.
		1438
		1439	=item ($row, $col) = $line->coord_of ($offset)
		1440
		1441	Translates a string offset into terminal coordinates again.
295		1442
296	=back	1443	=back
		1444
		1445	=cut
		1446
		1447	sub line {
		1448	my ($self, $row) = @_;
		1449
		1450	my $maxrow = $self->nrow - 1;
		1451
		1452	my ($beg, $end) = ($row, $row);
		1453
		1454	--$beg while $self->ROW_is_longer ($beg - 1);
		1455	++$end while $self->ROW_is_longer ($end) && $end < $maxrow;
		1456
		1457	bless {
		1458	term => $self,
		1459	beg => $beg,
		1460	end => $end,
		1461	ncol => $self->ncol,
		1462	len => ($end - $beg) * $self->ncol + $self->ROW_l ($end),
		1463	}, urxvt::line::
		1464	}
		1465
		1466	sub urxvt::line::t {
		1467	my ($self) = @_;
		1468
		1469	if (@_ > 1)
		1470	{
		1471	$self->{term}->ROW_t ($_, $_[1], 0, ($_ - $self->{beg}) * $self->{ncol}, $self->{ncol})
		1472	for $self->{beg} .. $self->{end};
		1473	}
		1474
		1475	defined wantarray &&
		1476	substr +(join "", map $self->{term}->ROW_t ($_), $self->{beg} .. $self->{end}),
		1477	0, $self->{len}
		1478	}
		1479
		1480	sub urxvt::line::r {
		1481	my ($self) = @_;
		1482
		1483	if (@_ > 1)
		1484	{
		1485	$self->{term}->ROW_r ($_, $_[1], 0, ($_ - $self->{beg}) * $self->{ncol}, $self->{ncol})
		1486	for $self->{beg} .. $self->{end};
		1487	}
		1488
		1489	if (defined wantarray) {
		1490	my $rend = [
		1491	map @{ $self->{term}->ROW_r ($_) }, $self->{beg} .. $self->{end}
		1492	];
		1493	$#$rend = $self->{len} - 1;
		1494	return $rend;
		1495	}
		1496
		1497	()
		1498	}
		1499
		1500	sub urxvt::line::beg { $_[0]{beg} }
		1501	sub urxvt::line::end { $_[0]{end} }
		1502	sub urxvt::line::l { $_[0]{len} }
		1503
		1504	sub urxvt::line::offset_of {
		1505	my ($self, $row, $col) = @_;
		1506
		1507	($row - $self->{beg}) * $self->{ncol} + $col
		1508	}
		1509
		1510	sub urxvt::line::coord_of {
		1511	my ($self, $offset) = @_;
		1512
		1513	use integer;
		1514
		1515	(
		1516	$offset / $self->{ncol} + $self->{beg},
		1517	$offset % $self->{ncol}
		1518	)
		1519	}
		1520
		1521	=item $text = $term->special_encode $string
		1522
		1523	Converts a perl string into the special encoding used by rxvt-unicode,
		1524	where one character corresponds to one screen cell. See
		1525	C<< $term->ROW_t >> for details.
		1526
		1527	=item $string = $term->special_decode $text
		1528
		1529	Converts rxvt-unicodes text reprsentation into a perl string. See
		1530	C<< $term->ROW_t >> for details.
		1531
		1532	=item $success = $term->grab_button ($button, $modifiermask)
		1533
		1534	Registers a synchronous button grab. See the XGrabButton manpage.
		1535
		1536	=item $success = $term->grab ($eventtime[, $sync])
		1537
		1538	Calls XGrabPointer and XGrabKeyboard in asynchronous (default) or
		1539	synchronous (C<$sync> is true). Also remembers the grab timestampe.
		1540
		1541	=item $term->allow_events_async
		1542
		1543	Calls XAllowEvents with AsyncBoth for the most recent grab.
		1544
		1545	=item $term->allow_events_sync
		1546
		1547	Calls XAllowEvents with SyncBoth for the most recent grab.
		1548
		1549	=item $term->allow_events_replay
		1550
		1551	Calls XAllowEvents with both ReplayPointer and ReplayKeyboard for the most
		1552	recent grab.
		1553
		1554	=item $term->ungrab
		1555
		1556	Calls XUngrab for the most recent grab. Is called automatically on
		1557	evaluation errors, as it is better to lose the grab in the error case as
		1558	the session.
		1559
		1560	=back
		1561
		1562	=cut
		1563
		1564	package urxvt::popup;
		1565
		1566	=head2 The C<urxvt::popup> Class
		1567
		1568	=over 4
		1569
		1570	=cut
		1571
		1572	sub add_item {
		1573	my ($self, $item) = @_;
		1574
		1575	$item->{rend}{normal} = "\x1b[0;30;47m" unless exists $item->{rend}{normal};
		1576	$item->{rend}{hover} = "\x1b[0;30;46m" unless exists $item->{rend}{hover};
		1577	$item->{rend}{active} = "\x1b[m" unless exists $item->{rend}{active};
		1578
		1579	$item->{render} ||= sub { $_[0]{text} };
		1580
		1581	push @{ $self->{item} }, $item;
		1582	}
		1583
		1584	=item $popup->add_title ($title)
		1585
		1586	Adds a non-clickable title to the popup.
		1587
		1588	=cut
		1589
		1590	sub add_title {
		1591	my ($self, $title) = @_;
		1592
		1593	$self->add_item ({
		1594	rend => { normal => "\x1b[38;5;11;44m", hover => "\x1b[38;5;11;44m", active => "\x1b[38;5;11;44m" },
		1595	text => $title,
		1596	activate => sub { },
		1597	});
		1598	}
		1599
		1600	=item $popup->add_separator ([$sepchr])
		1601
		1602	Creates a separator, optionally using the character given as C<$sepchr>.
		1603
		1604	=cut
		1605
		1606	sub add_separator {
		1607	my ($self, $sep) = @_;
		1608
		1609	$sep ||= "=";
		1610
		1611	$self->add_item ({
		1612	rend => { normal => "\x1b[0;30;47m", hover => "\x1b[0;30;47m", active => "\x1b[0;30;47m" },
		1613	text => "",
		1614	render => sub { $sep x $self->{term}->ncol },
		1615	activate => sub { },
		1616	});
		1617	}
		1618
		1619	=item $popup->add_button ($text, $cb)
		1620
		1621	Adds a clickable button to the popup. C<$cb> is called whenever it is
		1622	selected.
		1623
		1624	=cut
		1625
		1626	sub add_button {
		1627	my ($self, $text, $cb) = @_;
		1628
		1629	$self->add_item ({ type => "button", text => $text, activate => $cb});
		1630	}
		1631
		1632	=item $popup->add_toggle ($text, $cb, $initial_value)
		1633
		1634	Adds a toggle/checkbox item to the popup. Teh callback gets called
		1635	whenever it gets toggled, with a boolean indicating its value as its first
		1636	argument.
		1637
		1638	=cut
		1639
		1640	sub add_toggle {
		1641	my ($self, $text, $cb, $value) = @_;
		1642
		1643	my $item; $item = {
		1644	type => "button",
		1645	text => " $text",
		1646	value => $value,
		1647	render => sub { ($_[0]{value} ? "* " : " ") . $text },
		1648	activate => sub { $cb->($_[1]{value} = !$_[1]{value}); },
		1649	};
		1650
		1651	$self->add_item ($item);
		1652	}
		1653
		1654	=item $popup->show
		1655
		1656	Displays the popup (which is initially hidden).
		1657
		1658	=cut
		1659
		1660	sub show {
		1661	my ($self) = @_;
		1662
		1663	local $urxvt::popup::self = $self;
		1664
		1665	my $env = $self->{term}->env;
		1666	# we can't hope to reproduce the locale algorithm, so nuke LC_ALL and set LC_CTYPE.
		1667	delete $env->{LC_ALL};
		1668	$env->{LC_CTYPE} = $self->{term}->locale;
		1669
		1670	urxvt::term->new ($env, "popup",
		1671	"--perl-lib" => "", "--perl-ext-common" => "",
		1672	"-pty-fd" => -1, "-sl" => 0,
		1673	"-b" => 1, "-bd" => "grey80", "-bl", "-override-redirect",
		1674	"--transient-for" => $self->{term}->parent,
		1675	"-display" => $self->{term}->display_id,
		1676	"-pe" => "urxvt-popup")
		1677	or die "unable to create popup window\n";
		1678	}
		1679
		1680	sub DESTROY {
		1681	my ($self) = @_;
		1682
		1683	delete $self->{term}{_destroy}{$self};
		1684	$self->{term}->ungrab;
		1685	}
		1686
		1687	=back
		1688
		1689	=cut
		1690
		1691	package urxvt::watcher;
		1692
		1693	@urxvt::timer::ISA = __PACKAGE__;
		1694	@urxvt::iow::ISA = __PACKAGE__;
		1695	@urxvt::pw::ISA = __PACKAGE__;
		1696	@urxvt::iw::ISA = __PACKAGE__;
297		1697
298	=head2 The C<urxvt::timer> Class	1698	=head2 The C<urxvt::timer> Class
299		1699
300	This class implements timer watchers/events. Time is represented as a	1700	This class implements timer watchers/events. Time is represented as a
301	fractional number of seconds since the epoch. Example:	1701	fractional number of seconds since the epoch. Example:
302		1702
303	# create a digital clock display in upper right corner	1703	$term->{overlay} = $term->overlay (-1, 0, 8, 1, urxvt::OVERLAY_RSTYLE, 0);
304	$term->{timer} = urxvt::timer	1704	$term->{timer} = urxvt::timer
305	->new	1705	->new
306	->start (urxvt::NOW)	1706	->interval (1)
307	->cb (sub {	1707	->cb (sub {
308	my ($timer) = @_;
309	my $time = $timer->at;
310	$timer->start ($time + 1);
311	$self->scr_overlay (-1, 0,	1708	$term->{overlay}->set (0, 0,
312	POSIX::strftime "%H:%M:%S", localtime $time);	1709	sprintf "%2d:%02d:%02d", (localtime urxvt::NOW)[2,1,0]);
313	});	1710	});
314		1711
315	=over 4	1712	=over 4
316		1713
317	=item $timer = new urxvt::timer	1714	=item $timer = new urxvt::timer
318		1715
319	Create a new timer object in stopped state.	1716	Create a new timer object in started state. It is scheduled to fire
		1717	immediately.
320		1718
321	=item $timer = $timer->cb (sub { my ($timer) = @_; ... })	1719	=item $timer = $timer->cb (sub { my ($timer) = @_; ... })
322		1720
323	Set the callback to be called when the timer triggers.	1721	Set the callback to be called when the timer triggers.
324		1722
…		…
328		1726
329	=item $timer = $timer->set ($tstamp)	1727	=item $timer = $timer->set ($tstamp)
330		1728
331	Set the time the event is generated to $tstamp.	1729	Set the time the event is generated to $tstamp.
332		1730
		1731	=item $timer = $timer->interval ($interval)
		1732
		1733	Normally (and when C<$interval> is C<0>), the timer will automatically
		1734	stop after it has fired once. If C<$interval> is non-zero, then the timer
		1735	is automatically rescheduled at the given intervals.
		1736
333	=item $timer = $timer->start	1737	=item $timer = $timer->start
334		1738
335	Start the timer.	1739	Start the timer.
336		1740
337	=item $timer = $timer->start ($tstamp)	1741	=item $timer = $timer->start ($tstamp)
338		1742
339	Set the event trigger time to C<$tstamp> and start the timer.	1743	Set the event trigger time to C<$tstamp> and start the timer.
		1744
		1745	=item $timer = $timer->after ($delay)
		1746
		1747	Like C<start>, but sets the expiry timer to c<urxvt::NOW + $delay>.
340		1748
341	=item $timer = $timer->stop	1749	=item $timer = $timer->stop
342		1750
343	Stop the timer.	1751	Stop the timer.
344		1752
…		…
350		1758
351	$term->{socket} = ...	1759	$term->{socket} = ...
352	$term->{iow} = urxvt::iow	1760	$term->{iow} = urxvt::iow
353	->new	1761	->new
354	->fd (fileno $term->{socket})	1762	->fd (fileno $term->{socket})
355	->events (1) # wait for read data	1763	->events (urxvt::EVENT_READ)
356	->start	1764	->start
357	->cb (sub {	1765	->cb (sub {
358	my ($iow, $revents) = @_;	1766	my ($iow, $revents) = @_;
359	# $revents must be 1 here, no need to check	1767	# $revents must be 1 here, no need to check
360	sysread $term->{socket}, my $buf, 8192	1768	sysread $term->{socket}, my $buf, 8192
…		…
377		1785
378	Set the filedescriptor (not handle) to watch.	1786	Set the filedescriptor (not handle) to watch.
379		1787
380	=item $iow = $iow->events ($eventmask)	1788	=item $iow = $iow->events ($eventmask)
381		1789
382	Set the event mask to watch. Bit #0 (value C<1>) enables watching for read	1790	Set the event mask to watch. The only allowed values are
383	data, Bit #1 (value C<2>) enables watching for write data.	1791	C<urxvt::EVENT_READ> and C<urxvt::EVENT_WRITE>, which might be ORed
		1792	together, or C<urxvt::EVENT_NONE>.
384		1793
385	=item $iow = $iow->start	1794	=item $iow = $iow->start
386		1795
387	Start watching for requested events on the given handle.	1796	Start watching for requested events on the given handle.
388		1797
389	=item $iow = $iow->stop	1798	=item $iow = $iow->stop
390		1799
391	Stop watching for events on the given filehandle.	1800	Stop watching for events on the given filehandle.
		1801
		1802	=back
		1803
		1804	=head2 The C<urxvt::iw> Class
		1805
		1806	This class implements idle watchers, that get called automatically when
		1807	the process is idle. They should return as fast as possible, after doing
		1808	some useful work.
		1809
		1810	=over 4
		1811
		1812	=item $iw = new urxvt::iw
		1813
		1814	Create a new idle watcher object in stopped state.
		1815
		1816	=item $iw = $iw->cb (sub { my ($iw) = @_; ... })
		1817
		1818	Set the callback to be called when the watcher triggers.
		1819
		1820	=item $timer = $timer->start
		1821
		1822	Start the watcher.
		1823
		1824	=item $timer = $timer->stop
		1825
		1826	Stop the watcher.
		1827
		1828	=back
		1829
		1830	=head2 The C<urxvt::pw> Class
		1831
		1832	This class implements process watchers. They create an event whenever a
		1833	process exits, after which they stop automatically.
		1834
		1835	my $pid = fork;
		1836	...
		1837	$term->{pw} = urxvt::pw
		1838	->new
		1839	->start ($pid)
		1840	->cb (sub {
		1841	my ($pw, $exit_status) = @_;
		1842	...
		1843	});
		1844
		1845	=over 4
		1846
		1847	=item $pw = new urxvt::pw
		1848
		1849	Create a new process watcher in stopped state.
		1850
		1851	=item $pw = $pw->cb (sub { my ($pw, $exit_status) = @_; ... })
		1852
		1853	Set the callback to be called when the timer triggers.
		1854
		1855	=item $pw = $timer->start ($pid)
		1856
		1857	Tells the wqtcher to start watching for process C<$pid>.
		1858
		1859	=item $pw = $pw->stop
		1860
		1861	Stop the watcher.
		1862
		1863	=back
		1864
		1865	=head1 ENVIRONMENT
		1866
		1867	=head2 URXVT_PERL_VERBOSITY
		1868
		1869	This variable controls the verbosity level of the perl extension. Higher
		1870	numbers indicate more verbose output.
		1871
		1872	=over 4
		1873
		1874	=item == 0 - fatal messages
		1875
		1876	=item >= 3 - script loading and management
		1877
		1878	=item >=10 - all called hooks
		1879
		1880	=item >=11 - hook reutrn values
392		1881
393	=back	1882	=back
394		1883
395	=head1 AUTHOR	1884	=head1 AUTHOR
396		1885

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