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Revision 1.34 by root, Fri Jan 6 01:16:58 2006 UTC vs.
Revision 1.126 by root, Tue Jan 24 19:14:36 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	Another example: Programs I use often output "absolute path: " at the
		73	beginning of a line when they process multiple files. The following
		74	pattern matches the filename (note, there is a single space at the very
		75	end):
		76
		77	URxvt.selection.pattern-0: ^(/[^:]+):\
		78
		79	You can look at the source of the selection extension to see more
		80	interesting uses, such as parsing a line from beginning to end.
		81
		82	This extension also offers following bindable keyboard commands:
50		83
51	=over 4	84	=over 4
52		85
53	=item rot13	86	=item rot13
54		87
55	Rot-13 the selection when activated. Used via keyboard trigger:	88	Rot-13 the selection when activated. Used via keyboard trigger:
56		89
57	URxvt.keysym.C-M-r: perl:selection:rot13	90	URxvt.keysym.C-M-r: perl:selection:rot13
58		91
59	=back	92	=back
		93
		94	=item option-popup (enabled by default)
		95
		96	Binds a popup menu to Ctrl-Button2 that lets you toggle (some) options at
		97	runtime.
		98
		99	=item selection-popup (enabled by default)
		100
		101	Binds a popup menu to Ctrl-Button3 that lets you convert the selection
		102	text into various other formats/action (such as uri unescaping, perl
		103	evaluation, web-browser starting etc.), depending on content.
		104
		105	Other extensions can extend this popup menu by pushing a code reference
		106	onto C<@{ $term->{selection_popup_hook} }>, that is called whenever the
		107	popup is displayed.
		108
		109	It's sole argument is the popup menu, which can be modified. The selection
		110	is in C<$_>, which can be used to decide wether to add something or not.
		111	It should either return nothing or a string and a code reference. The
		112	string will be used as button text and the code reference will be called
		113	when the button gets activated and should transform C<$_>.
		114
		115	The following will add an entry C<a to b> that transforms all C<a>s in
		116	the selection to C<b>s, but only if the selection currently contains any
		117	C<a>s:
		118
		119	push @{ $self->{term}{selection_popup_hook} }, sub {
		120	/a/ ? ("a to be" => sub { s/a/b/g }
		121	: ()
		122	};
		123
		124	=item searchable-scrollback<hotkey> (enabled by default)
		125
		126	Adds regex search functionality to the scrollback buffer, triggered
		127	by a hotkey (default: C<M-s>). While in search mode, normal terminal
		128	input/output is suspended and a regex is displayed at the bottom of the
		129	screen.
		130
		131	Inputting characters appends them to the regex and continues incremental
		132	search. C<BackSpace> removes a character from the regex, C<Up> and C<Down>
		133	search upwards/downwards in the scrollback buffer, C<End> jumps to the
		134	bottom. C<Escape> leaves search mode and returns to the point where search
		135	was started, while C<Enter> or C<Return> stay at the current position and
		136	additionally stores the first match in the current line into the primary
		137	selection.
		138
		139	=item readline (enabled by default)
		140
		141	A support package that tries to make editing with readline easier. At the
		142	moment, it reacts to clicking with the left mouse button by trying to
		143	move the text cursor to this position. It does so by generating as many
		144	cursor-left or cursor-right keypresses as required (the this only works
		145	for programs that correctly support wide characters).
		146
		147	To avoid too many false positives, this is only done when:
		148
		149	=over 4
		150
		151	=item - the tty is in ICANON state.
		152
		153	=item - the text cursor is visible.
		154
		155	=item - the primary screen is currently being displayed.
		156
		157	=item - the mouse is on the same (multi-row-) line as the text cursor.
		158
		159	=back
		160
		161	The normal selection mechanism isn't disabled, so quick successive clicks
		162	might interfere with selection creation in harmless ways.
		163
		164	=item selection-autotransform
		165
		166	This selection allows you to do automatic transforms on a selection
		167	whenever a selection is made.
		168
		169	It works by specifying perl snippets (most useful is a single C<s///>
		170	operator) that modify C<$_> as resources:
		171
		172	URxvt.selection-autotransform.0: transform
		173	URxvt.selection-autotransform.1: transform
		174	...
		175
		176	For example, the following will transform selections of the form
		177	C<filename:number>, often seen in compiler messages, into C<vi +$filename
		178	$word>:
		179
		180	URxvt.selection-autotransform.0: s/^([^:[:space:]]+):(\\d+):?$/vi +$2 \\Q$1\\E\\x0d/
		181
		182	And this example matches the same,but replaces it with vi-commands you can
		183	paste directly into your (vi :) editor:
		184
		185	URxvt.selection-autotransform.0: s/^([^:[:space:]]+(\\d+):?$/:e \\Q$1\\E\\x0d:$2\\x0d/
		186
		187	Of course, this can be modified to suit your needs and your editor :)
		188
		189	To expand the example above to typical perl error messages ("XXX at
		190	FILENAME line YYY."), you need a slightly more elaborate solution:
		191
		192	URxvt.selection.pattern-0: ( at .*? line \\d+[,.])
		193	URxvt.selection-autotransform.0: s/^ at (.*?) line (\\d+)[,.]$/:e \\Q$1\E\\x0d:$2\\x0d/
		194
		195	The first line tells the selection code to treat the unchanging part of
		196	every error message as a selection pattern, and the second line transforms
		197	the message into vi commands to load the file.
		198
		199	=item tabbed
		200
		201	This transforms the terminal into a tabbar with additional terminals, that
		202	is, it implements what is commonly refered to as "tabbed terminal". The topmost line
		203	displays a "[NEW]" button, which, when clicked, will add a new tab, followed by one
		204	button per tab.
		205
		206	Clicking a button will activate that tab. Pressing B<Shift-Left> and
		207	B<Shift-Right> will switch to the tab left or right of the current one,
		208	while B<Shift-Down> creates a new tab.
		209
		210	=item mark-urls
		211
		212	Uses per-line display filtering (C<on_line_update>) to underline urls and
		213	make them clickable. When middle-clicked, the program specified in the
		214	resource C<urlLauncher> (default C<x-www-browser>) will be started with
		215	the URL as first argument.
		216
		217	=item automove-background
		218
		219	This is basically a one-line extension that dynamically changes the background pixmap offset
		220	to the window position, in effect creating the same effect as pseudo transparency with
		221	a custom pixmap. No scaling is supported in this mode. Exmaple:
		222
		223	@@RXVT_NAME@@ -pixmap background.xpm -pe automove-background
		224
		225	=item block-graphics-to-ascii
		226
		227	A not very useful example of filtering all text output to the terminal,
		228	by replacing all line-drawing characters (U+2500 .. U+259F) by a
		229	similar-looking ascii character.
60		230
61	=item digital-clock	231	=item digital-clock
62		232
63	Displays a digital clock using the built-in overlay.	233	Displays a digital clock using the built-in overlay.
64		234
…		…
66		236
67	Displays a very simple digital clock in the upper right corner of the	237	Displays a very simple digital clock in the upper right corner of the
68	window. Illustrates overwriting the refresh callbacks to create your own	238	window. Illustrates overwriting the refresh callbacks to create your own
69	overlays or changes.	239	overlays or changes.
70		240
71	=item mark-urls	241	=item selection-pastebin
72		242
73	A not very useful example of filtering all text output to the terminal, by	243	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	244	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.	245	not currently secure for use in a multiuser environment as it writes to
76	when typing them) do not get marked.	246	F</tmp> directly.).
		247
		248	It listens to the C<selection-pastebin:remote-pastebin> keyboard command,
		249	i.e.
		250
		251	URxvt.keysym.C-M-e: perl:selection-pastebin:remote-pastebin
		252
		253	Pressing this combination runs a command with C<%> replaced by the name of
		254	the textfile. This command can be set via a resource:
		255
		256	URxvt.selection-pastebin.cmd: rsync -apP % ruth:/var/www/www.ta-sa.org/files/txt/.
		257
		258	And the default is likely not useful to anybody but the few people around
		259	here :)
		260
		261	The name of the textfile is the hex encoded md5 sum of the selection, so
		262	the same content should lead to the same filename.
		263
		264	After a successful upload the selection will be replaced by the text given
		265	in the C<selection-pastebin-url> resource (again, the % is the placeholder
		266	for the filename):
		267
		268	URxvt.selection-pastebin.url: http://www.ta-sa.org/files/txt/%
77		269
78	=back	270	=back
		271
		272	=head1 API DOCUMENTATION
79		273
80	=head2 General API Considerations	274	=head2 General API Considerations
81		275
82	All objects (such as terminals, time watchers etc.) are typical	276	All objects (such as terminals, time watchers etc.) are typical
83	reference-to-hash objects. The hash can be used to store anything you	277	reference-to-hash objects. The hash can be used to store anything you
…		…
96	=over 4	290	=over 4
97		291
98	=item $text	292	=item $text
99		293
100	Rxvt-unicodes special way of encoding text, where one "unicode" character	294	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.	295	always represents one screen cell. See L<ROW_t> for a discussion of this format.
102		296
103	=item $string	297	=item $string
104		298
105	A perl text string, with an emphasis on I<text>. It can store all unicode	299	A perl text string, with an emphasis on I<text>. It can store all unicode
106	characters and is to be distinguished with text encoded in a specific	300	characters and is to be distinguished with text encoded in a specific
…		…
111	Either binary data or - more common - a text string encoded in a	305	Either binary data or - more common - a text string encoded in a
112	locale-specific way.	306	locale-specific way.
113		307
114	=back	308	=back
115		309
		310	=head2 Extension Objects
		311
		312	Very perl extension is a perl class. A separate perl object is created
		313	for each terminal and each extension and passed as the first parameter to
		314	hooks. So extensions can use their C<$self> object without having to think
		315	about other extensions, with the exception of methods and members that
		316	begin with an underscore character C<_>: these are reserved for internal
		317	use.
		318
		319	Although it isn't a C<urxvt::term> object, you can call all methods of the
		320	C<urxvt::term> class on this object.
		321
		322	It has the following methods and data members:
		323
		324	=over 4
		325
		326	=item $urxvt_term = $self->{term}
		327
		328	Returns the C<urxvt::term> object associated with this instance of the
		329	extension. This member I<must not> be changed in any way.
		330
		331	=item $self->enable ($hook_name => $cb, [$hook_name => $cb..])
		332
		333	Dynamically enable the given hooks (named without the C<on_> prefix) for
		334	this extension, replacing any previous hook. This is useful when you want
		335	to overwrite time-critical hooks only temporarily.
		336
		337	=item $self->disable ($hook_name[, $hook_name..])
		338
		339	Dynamically disable the given hooks.
		340
		341	=back
		342
116	=head2 Hooks	343	=head2 Hooks
117		344
118	The following subroutines can be declared in loaded scripts, and will be	345	The following subroutines can be declared in extension files, and will be
119	called whenever the relevant event happens.	346	called whenever the relevant event happens.
120		347
121	The first argument passed to them is an object private to each terminal	348	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	349	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		350
127	All of them must return a boolean value. If it is true, then the event	351	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,	352	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.	353	relevant action might not be carried out by the C++ code.
130		354
131	When in doubt, return a false value (preferably C<()>).	355	I<< When in doubt, return a false value (preferably C<()>). >>
132		356
133	=over 4	357	=over 4
134		358
135	=item on_init $term	359	=item on_init $term
136		360
137	Called after a new terminal object has been initialized, but before	361	Called after a new terminal object has been initialized, but before
138	windows are created or the command gets run.	362	windows are created or the command gets run. Most methods are unsafe to
		363	call or deliver senseless data, as terminal size and other characteristics
		364	have not yet been determined. You can safely query and change resources
		365	and options, though. For many purposes the C<on_start> hook is a better
		366	place.
		367
		368	=item on_start $term
		369
		370	Called at the very end of initialisation of a new terminal, just before
		371	trying to map (display) the toplevel and returning to the mainloop.
		372
		373	=item on_destroy $term
		374
		375	Called whenever something tries to destroy terminal, before doing anything
		376	yet. If this hook returns true, then destruction is skipped, but this is
		377	rarely a good idea.
139		378
140	=item on_reset $term	379	=item on_reset $term
141		380
142	Called after the screen is "reset" for any reason, such as resizing or	381	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	382	control sequences. Here is where you can react on changes to size-related
144	variables.	383	variables.
145		384
146	=item on_start $term	385	=item on_child_start $term, $pid
147		386
148	Called at the very end of initialisation of a new terminal, just before	387	Called just after the child process has been C<fork>ed.
149	returning to the mainloop.	388
		389	=item on_child_exit $term, $status
		390
		391	Called just after the child process has exited. C<$status> is the status
		392	from C<waitpid>.
150		393
151	=item on_sel_make $term, $eventtime	394	=item on_sel_make $term, $eventtime
152		395
153	Called whenever a selection has been made by the user, but before the	396	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	397	selection text is copied, so changes to the beginning, end or type of the
…		…
168	=item on_sel_extend $term	411	=item on_sel_extend $term
169		412
170	Called whenever the user tries to extend the selection (e.g. with a double	413	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	414	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	415	should extend the selection itelf and return true to suppress the built-in
173	processing.	416	processing. This can happen multiple times, as long as the callback
		417	returns true, it will be called on every further click by the user and is
		418	supposed to enlarge the selection more and more, if possible.
174		419
175	See the F<selection> example extension.	420	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		421
187	=item on_view_change $term, $offset	422	=item on_view_change $term, $offset
188		423
189	Called whenever the view offset changes, i..e the user or program	424	Called whenever the view offset changes, i..e the user or program
190	scrolls. Offset C<0> means display the normal terminal, positive values	425	scrolls. Offset C<0> means display the normal terminal, positive values
…		…
197	than the scroll back buffer or the terminal.	432	than the scroll back buffer or the terminal.
198		433
199	It is called before lines are scrolled out (so rows 0 .. min ($lines - 1,	434	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	435	$nrow - 1) represent the lines to be scrolled out). C<$saved> is the total
201	number of lines that will be in the scrollback buffer.	436	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		437
207	=item on_osc_seq $term, $string	438	=item on_osc_seq $term, $string
208		439
209	Called whenever the B<ESC ] 777 ; string ST> command sequence (OSC =	440	Called whenever the B<ESC ] 777 ; string ST> command sequence (OSC =
210	operating system command) is processed. Cursor position and other state	441	operating system command) is processed. Cursor position and other state
…		…
223	can filter/change and output the text yourself by returning a true value	454	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	455	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	456	might be very slow, however, as your hook is called for B<all> text being
226	output.	457	output.
227		458
		459	=item on_tt_write $term, $octets
		460
		461	Called whenever some data is written to the tty/pty and can be used to
		462	suppress or filter tty input.
		463
		464	=item on_line_update $term, $row
		465
		466	Called whenever a line was updated or changed. Can be used to filter
		467	screen output (e.g. underline urls or other useless stuff). Only lines
		468	that are being shown will be filtered, and, due to performance reasons,
		469	not always immediately.
		470
		471	The row number is always the topmost row of the line if the line spans
		472	multiple rows.
		473
		474	Please note that, if you change the line, then the hook might get called
		475	later with the already-modified line (e.g. if unrelated parts change), so
		476	you cannot just toggle rendition bits, but only set them.
		477
228	=item on_refresh_begin $term	478	=item on_refresh_begin $term
229		479
230	Called just before the screen gets redrawn. Can be used for overlay	480	Called just before the screen gets redrawn. Can be used for overlay
231	or similar effects by modify terminal contents in refresh_begin, and	481	or similar effects by modify terminal contents in refresh_begin, and
232	restoring them in refresh_end. The built-in overlay and selection display	482	restoring them in refresh_end. The built-in overlay and selection display
…		…
240		490
241	Called whenever the user presses a key combination that has a	491	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>	492	C<perl:string> action bound to it (see description of the B<keysym>
243	resource in the @@RXVT_NAME@@(1) manpage).	493	resource in the @@RXVT_NAME@@(1) manpage).
244		494
		495	=item on_x_event $term, $event
		496
		497	Called on every X event received on the vt window (and possibly other
		498	windows). Should only be used as a last resort. Most event structure
		499	members are not passed.
		500
		501	=item on_focus_in $term
		502
		503	Called whenever the window gets the keyboard focus, before rxvt-unicode
		504	does focus in processing.
		505
		506	=item on_focus_out $term
		507
		508	Called wheneever the window loses keyboard focus, before rxvt-unicode does
		509	focus out processing.
		510
		511	=item on_configure_notify $term, $event
		512
		513	=item on_property_notify $term, $event
		514
		515	=item on_key_press $term, $event, $keysym, $octets
		516
		517	=item on_key_release $term, $event, $keysym
		518
		519	=item on_button_press $term, $event
		520
		521	=item on_button_release $term, $event
		522
		523	=item on_motion_notify $term, $event
		524
		525	=item on_map_notify $term, $event
		526
		527	=item on_unmap_notify $term, $event
		528
		529	Called whenever the corresponding X event is received for the terminal If
		530	the hook returns true, then the even will be ignored by rxvt-unicode.
		531
		532	The event is a hash with most values as named by Xlib (see the XEvent
		533	manpage), with the additional members C<row> and C<col>, which are the
		534	(real, not screen-based) row and column under the mouse cursor.
		535
		536	C<on_key_press> additionally receives the string rxvt-unicode would
		537	output, if any, in locale-specific encoding.
		538
		539	subwindow.
		540
		541	=item on_client_message $term, $event
		542
		543	=item on_wm_protocols $term, $event
		544
		545	=item on_wm_delete_window $term, $event
		546
		547	Called when various types of ClientMessage events are received (all with
		548	format=32, WM_PROTOCOLS or WM_PROTOCOLS:WM_DELETE_WINDOW).
		549
245	=back	550	=back
246		551
		552	=cut
		553
		554	package urxvt;
		555
		556	use utf8;
		557	use strict;
		558	use Carp ();
		559	use Scalar::Util ();
		560	use List::Util ();
		561
		562	our $VERSION = 1;
		563	our $TERM;
		564	our @TERM_INIT;
		565	our @TERM_EXT;
		566	our @HOOKNAME;
		567	our %HOOKTYPE = map +($HOOKNAME[$_] => $_), 0..$#HOOKNAME;
		568	our %OPTION;
		569
		570	our $LIBDIR;
		571	our $RESNAME;
		572	our $RESCLASS;
		573	our $RXVTNAME;
		574
		575	our $NOCHAR = chr 0xffff;
		576
247	=head2 Variables in the C<urxvt> Package	577	=head2 Variables in the C<urxvt> Package
248		578
249	=over 4	579	=over 4
250		580
		581	=item $urxvt::LIBDIR
		582
		583	The rxvt-unicode library directory, where, among other things, the perl
		584	modules and scripts are stored.
		585
		586	=item $urxvt::RESCLASS, $urxvt::RESCLASS
		587
		588	The resource class and name rxvt-unicode uses to look up X resources.
		589
		590	=item $urxvt::RXVTNAME
		591
		592	The basename of the installed binaries, usually C<urxvt>.
		593
251	=item $urxvt::TERM	594	=item $urxvt::TERM
252		595
253	The current terminal. Whenever a callback/Hook is bein executed, this	596	The current terminal. This variable stores the current C<urxvt::term>
254	variable stores the current C<urxvt::term> object.	597	object, whenever a callback/hook is executing.
		598
		599	=item @urxvt::TERM_INIT
		600
		601	All coderefs in this array will be called as methods of the next newly
		602	created C<urxvt::term> object (during the C<on_init> phase). The array
		603	gets cleared before the codereferences that were in it are being executed,
		604	so coderefs can push themselves onto it again if they so desire.
		605
		606	This complements to the perl-eval commandline option, but gets executed
		607	first.
		608
		609	=item @urxvt::TERM_EXT
		610
		611	Works similar to C<@TERM_INIT>, but contains perl package/class names, which
		612	get registered as normal extensions after calling the hooks in C<@TERM_INIT>
		613	but before other extensions. Gets cleared just like C<@TERM_INIT>.
255		614
256	=back	615	=back
257		616
258	=head2 Functions in the C<urxvt> Package	617	=head2 Functions in the C<urxvt> Package
259		618
…		…
272	that calls this function.	631	that calls this function.
273		632
274	Using this function has the advantage that its output ends up in the	633	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.	634	correct place, e.g. on stderr of the connecting urxvtc client.
276		635
		636	Messages have a size limit of 1023 bytes currently.
		637
277	=item $time = urxvt::NOW	638	=item $time = urxvt::NOW
278		639
279	Returns the "current time" (as per the event loop).	640	Returns the "current time" (as per the event loop).
		641
		642	=item urxvt::CurrentTime
		643
		644	=item urxvt::ShiftMask, LockMask, ControlMask, Mod1Mask, Mod2Mask,
		645	Mod3Mask, Mod4Mask, Mod5Mask, Button1Mask, Button2Mask, Button3Mask,
		646	Button4Mask, Button5Mask, AnyModifier
		647
		648	=item urxvt::NoEventMask, KeyPressMask, KeyReleaseMask,
		649	ButtonPressMask, ButtonReleaseMask, EnterWindowMask, LeaveWindowMask,
		650	PointerMotionMask, PointerMotionHintMask, Button1MotionMask, Button2MotionMask,
		651	Button3MotionMask, Button4MotionMask, Button5MotionMask, ButtonMotionMask,
		652	KeymapStateMask, ExposureMask, VisibilityChangeMask, StructureNotifyMask,
		653	ResizeRedirectMask, SubstructureNotifyMask, SubstructureRedirectMask,
		654	FocusChangeMask, PropertyChangeMask, ColormapChangeMask, OwnerGrabButtonMask
		655
		656	=item urxvt::KeyPress, KeyRelease, ButtonPress, ButtonRelease, MotionNotify,
		657	EnterNotify, LeaveNotify, FocusIn, FocusOut, KeymapNotify, Expose,
		658	GraphicsExpose, NoExpose, VisibilityNotify, CreateNotify, DestroyNotify,
		659	UnmapNotify, MapNotify, MapRequest, ReparentNotify, ConfigureNotify,
		660	ConfigureRequest, GravityNotify, ResizeRequest, CirculateNotify,
		661	CirculateRequest, PropertyNotify, SelectionClear, SelectionRequest,
		662	SelectionNotify, ColormapNotify, ClientMessage, MappingNotify
		663
		664	Various constants for use in X calls and event processing.
280		665
281	=back	666	=back
282		667
283	=head2 RENDITION	668	=head2 RENDITION
284		669
…		…
311		696
312	=item $background = urxvt::GET_BASEBG $rend	697	=item $background = urxvt::GET_BASEBG $rend
313		698
314	Return the foreground/background colour index, respectively.	699	Return the foreground/background colour index, respectively.
315		700
316	=item $rend = urxvt::SET_FGCOLOR ($rend, $new_colour)	701	=item $rend = urxvt::SET_FGCOLOR $rend, $new_colour
317		702
318	=item $rend = urxvt::SET_BGCOLOR ($rend, $new_colour)	703	=item $rend = urxvt::SET_BGCOLOR $rend, $new_colour
319		704
320	Replace the foreground/background colour in the rendition mask with the	705	Replace the foreground/background colour in the rendition mask with the
321	specified one.	706	specified one.
322		707
323	=item $value = urxvt::GET_CUSTOM ($rend)	708	=item $value = urxvt::GET_CUSTOM $rend
324		709
325	Return the "custom" value: Every rendition has 5 bits for use by	710	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	711	extensions. They can be set and changed as you like and are initially
327	zero.	712	zero.
328		713
329	=item $rend = urxvt::SET_CUSTOM ($rend, $new_value)	714	=item $rend = urxvt::SET_CUSTOM $rend, $new_value
330		715
331	Change the custom value.	716	Change the custom value.
332		717
333	=back	718	=back
334		719
335	=cut	720	=cut
336		721
337	package urxvt;
338
339	use strict;
340	use Scalar::Util ();
341
342	our $TERM;
343	our @HOOKNAME;
344	our $LIBDIR;
345
346	BEGIN {	722	BEGIN {
347	urxvt->bootstrap;
348
349	# overwrite perl's warn	723	# overwrite perl's warn
350	*CORE::GLOBAL::warn = sub {	724	*CORE::GLOBAL::warn = sub {
351	my $msg = join "", @_;	725	my $msg = join "", @_;
352	$msg .= "\n"	726	$msg .= "\n"
353	unless $msg =~ /\n$/;	727	unless $msg =~ /\n$/;
354	urxvt::warn ($msg);	728	urxvt::warn ($msg);
355	};	729	};
356	}	730	}
357		731
358	my @hook_count;	732	no warnings 'utf8';
		733
359	my $verbosity = $ENV{URXVT_PERL_VERBOSITY};	734	my $verbosity = $ENV{URXVT_PERL_VERBOSITY};
360		735
361	sub verbose {	736	sub verbose {
362	my ($level, $msg) = @_;	737	my ($level, $msg) = @_;
363	warn "$msg\n" if $level <= $verbosity;	738	warn "$msg\n" if $level <= $verbosity;
364	}	739	}
365		740
366	# find on_xxx subs in the package and register them	741	my %extension_pkg;
367	# as hooks
368	sub register_package($) {
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 $script_pkg = "script0000";
384	my %script_pkg;
385		742
386	# load a single script into its own package, once only	743	# load a single script into its own package, once only
387	sub script_package($) {	744	sub extension_package($) {
388	my ($path) = @_;	745	my ($path) = @_;
389		746
390	$script_pkg{$path} ||= do {	747	$extension_pkg{$path} ||= do {
391	my $pkg = "urxvt::" . ($script_pkg++);	748	$path =~ /([^\/\\]+)$/;
		749	my $pkg = $1;
		750	$pkg =~ s/[^[:word:]]/_/g;
		751	$pkg = "urxvt::ext::$pkg";
392		752
393	verbose 3, "loading script '$path' into package '$pkg'";	753	verbose 3, "loading extension '$path' into package '$pkg'";
394		754
395	open my $fh, "<:raw", $path	755	open my $fh, "<:raw", $path
396	or die "$path: $!";	756	or die "$path: $!";
397		757
398	my $source = "package $pkg; use strict; use utf8;\n"	758	my $source =
		759	"package $pkg; use strict; use utf8; no warnings 'utf8';\n"
399	. "#line 1 \"$path\"\n{\n"	760	. "#line 1 \"$path\"\n{\n"
400	. (do { local $/; <$fh> })	761	. (do { local $/; <$fh> })
401	. "\n};\n1";	762	. "\n};\n1";
402		763
		764	eval $source
403	eval $source or die "$path: $@";	765	or die "$path: $@";
404		766
405	$pkg	767	$pkg
406	}	768	}
407	}	769	}
408		770
…		…
413	local $TERM = shift;	775	local $TERM = shift;
414	my $htype = shift;	776	my $htype = shift;
415		777
416	if ($htype == 0) { # INIT	778	if ($htype == 0) { # INIT
417	my @dirs = ((split /:/, $TERM->resource ("perl_lib")), "$LIBDIR/perl");	779	my @dirs = ((split /:/, $TERM->resource ("perl_lib")), "$LIBDIR/perl");
		780
		781	my %ext_arg;
418		782
		783	{
		784	my @init = @TERM_INIT;
		785	@TERM_INIT = ();
		786	$_->($TERM) for @init;
		787	my @pkg = @TERM_EXT;
		788	@TERM_EXT = ();
		789	$TERM->register_package ($_) for @pkg;
		790	}
		791
419	for my $ext (map { split /:/, $TERM->resource ("perl_ext_$_") } 1, 2) {	792	for (grep $_, map { split /,/, $TERM->resource ("perl_ext_$_") } 1, 2) {
		793	if ($_ eq "default") {
		794	$ext_arg{$_} ||= [] for qw(selection option-popup selection-popup searchable-scrollback readline);
		795	} elsif (/^-(.*)$/) {
		796	delete $ext_arg{$1};
		797	} elsif (/^([^<]+)<(.*)>$/) {
		798	push @{ $ext_arg{$1} }, $2;
		799	} else {
		800	$ext_arg{$_} ||= [];
		801	}
		802	}
		803
		804	while (my ($ext, $argv) = each %ext_arg) {
420	my @files = grep -f $_, map "$_/$ext", @dirs;	805	my @files = grep -f $_, map "$_/$ext", @dirs;
421		806
422	if (@files) {	807	if (@files) {
423	register_package script_package $files[0];	808	$TERM->register_package (extension_package $files[0], $argv);
424	} else {	809	} else {
425	warn "perl extension '$ext' not found in perl library search path\n";	810	warn "perl extension '$ext' not found in perl library search path\n";
426	}	811	}
427	}	812	}
		813
		814	eval "#line 1 \"--perl-eval resource/argument\"\n" . $TERM->resource ("perl_eval");
		815	warn $@ if $@;
428	}	816	}
429		817
430	$retval = undef;	818	$retval = undef;
431		819
432	if (my $cb = $TERM->{_hook}[$htype]) {	820	if (my $cb = $TERM->{_hook}[$htype]) {
…		…
434	if $verbosity >= 10;	822	if $verbosity >= 10;
435		823
436	keys %$cb;	824	keys %$cb;
437		825
438	while (my ($pkg, $cb) = each %$cb) {	826	while (my ($pkg, $cb) = each %$cb) {
439	$retval = $cb->(	827	my $retval_ = eval { $cb->($TERM->{_pkg}{$pkg}, @_) };
440	$TERM->{_pkg}{$pkg} ||= do {	828	$retval ||= $retval_;
441	my $proxy = bless { }, urxvt::term::proxy::;
442	Scalar::Util::weaken ($proxy->{term} = $TERM);
443	$proxy
444	},
445	@_,
446	) and last;
447	}
448	}
449		829
450	if ($htype == 1) { # DESTROY	830	if ($@) {
451	# remove hooks if unused	831	$TERM->ungrab; # better to lose the grab than the session
452	if (my $hook = $TERM->{_hook}) {	832	warn $@;
453	for my $htype (0..$#$hook) {
454	$hook_count[$htype] -= scalar keys %{ $hook->[$htype] || {} }
455	or set_should_invoke $htype, 0;
456	}	833	}
457	}	834	}
458		835
		836	verbose 11, "$HOOKNAME[$htype] returning <$retval>"
		837	if $verbosity >= 11;
		838	}
		839
		840	if ($htype == 1) { # DESTROY
459	# clear package objects	841	# clear package objects
460	%$_ = () for values %{ $TERM->{_pkg} };	842	%$_ = () for values %{ $TERM->{_pkg} };
461		843
462	# clear package	844	# clear package
463	%$TERM = ();	845	%$TERM = ();
464	}	846	}
465		847
466	$retval	848	$retval
467	}	849	}
468		850
469	sub urxvt::term::proxy::AUTOLOAD {	851	# urxvt::term::extension
470	$urxvt::term::proxy::AUTOLOAD =~ /:([^:]+)$/	852
		853	package urxvt::term::extension;
		854
		855	sub enable {
		856	my ($self, %hook) = @_;
		857	my $pkg = $self->{_pkg};
		858
		859	while (my ($name, $cb) = each %hook) {
		860	my $htype = $HOOKTYPE{uc $name};
		861	defined $htype
		862	or Carp::croak "unsupported hook type '$name'";
		863
		864	$self->set_should_invoke ($htype, +1)
		865	unless exists $self->{term}{_hook}[$htype]{$pkg};
		866
		867	$self->{term}{_hook}[$htype]{$pkg} = $cb;
		868	}
		869	}
		870
		871	sub disable {
		872	my ($self, @hook) = @_;
		873	my $pkg = $self->{_pkg};
		874
		875	for my $name (@hook) {
		876	my $htype = $HOOKTYPE{uc $name};
		877	defined $htype
		878	or Carp::croak "unsupported hook type '$name'";
		879
		880	$self->set_should_invoke ($htype, -1)
		881	if delete $self->{term}{_hook}[$htype]{$pkg};
		882	}
		883	}
		884
		885	our $AUTOLOAD;
		886
		887	sub AUTOLOAD {
		888	$AUTOLOAD =~ /:([^:]+)$/
471	or die "FATAL: \$AUTOLOAD '$urxvt::term::proxy::AUTOLOAD' unparsable";	889	or die "FATAL: \$AUTOLOAD '$AUTOLOAD' unparsable";
472		890
473	eval qq{	891	eval qq{
474	sub $urxvt::term::proxy::AUTOLOAD {	892	sub $AUTOLOAD {
475	my \$proxy = shift;	893	my \$proxy = shift;
476	\$proxy->{term}->$1 (\@_)	894	\$proxy->{term}->$1 (\@_)
477	}	895	}
478	1	896	1
479	} or die "FATAL: unable to compile method forwarder: $@";	897	} or die "FATAL: unable to compile method forwarder: $@";
480		898
481	goto &$urxvt::term::proxy::AUTOLOAD;	899	goto &$AUTOLOAD;
482	}	900	}
		901
		902	sub DESTROY {
		903	# nop
		904	}
		905
		906	# urxvt::destroy_hook
		907
		908	sub urxvt::destroy_hook::DESTROY {
		909	${$_[0]}->();
		910	}
		911
		912	sub urxvt::destroy_hook(&) {
		913	bless \shift, urxvt::destroy_hook::
		914	}
		915
		916	package urxvt::anyevent;
		917
		918	=head2 The C<urxvt::anyevent> Class
		919
		920	The sole purpose of this class is to deliver an interface to the
		921	C<AnyEvent> module - any module using it will work inside urxvt without
		922	further programming. The only exception is that you cannot wait on
		923	condition variables, but non-blocking condvar use is ok. What this means
		924	is that you cannot use blocking APIs, but the non-blocking variant should
		925	work.
		926
		927	=cut
		928
		929	our $VERSION = 1;
		930
		931	$INC{"urxvt/anyevent.pm"} = 1; # mark us as there
		932	push @AnyEvent::REGISTRY, [urxvt => urxvt::anyevent::];
		933
		934	sub timer {
		935	my ($class, %arg) = @_;
		936
		937	my $cb = $arg{cb};
		938
		939	urxvt::timer
		940	->new
		941	->start (urxvt::NOW + $arg{after})
		942	->cb (sub {
		943	$_[0]->stop; # need to cancel manually
		944	$cb->();
		945	})
		946	}
		947
		948	sub io {
		949	my ($class, %arg) = @_;
		950
		951	my $cb = $arg{cb};
		952
		953	bless [$arg{fh}, urxvt::iow
		954	->new
		955	->fd (fileno $arg{fh})
		956	->events (($arg{poll} =~ /r/ ? 1 : 0)
		957	| ($arg{poll} =~ /w/ ? 2 : 0))
		958	->start
		959	->cb (sub {
		960	$cb->(($_[1] & 1 ? 'r' : '')
		961	. ($_[1] & 2 ? 'w' : ''));
		962	})],
		963	urxvt::anyevent::
		964	}
		965
		966	sub DESTROY {
		967	$_[0][1]->stop;
		968	}
		969
		970	sub condvar {
		971	bless \my $flag, urxvt::anyevent::condvar::
		972	}
		973
		974	sub urxvt::anyevent::condvar::broadcast {
		975	${$_[0]}++;
		976	}
		977
		978	sub urxvt::anyevent::condvar::wait {
		979	unless (${$_[0]}) {
		980	Carp::croak "AnyEvent->condvar blocking wait unsupported in urxvt, use a non-blocking API";
		981	}
		982	}
		983
		984	package urxvt::term;
483		985
484	=head2 The C<urxvt::term> Class	986	=head2 The C<urxvt::term> Class
485		987
486	=over 4	988	=over 4
		989
		990	=cut
		991
		992	# find on_xxx subs in the package and register them
		993	# as hooks
		994	sub register_package {
		995	my ($self, $pkg, $argv) = @_;
		996
		997	no strict 'refs';
		998
		999	urxvt::verbose 6, "register package $pkg to $self";
		1000
		1001	@{"$pkg\::ISA"} = urxvt::term::extension::;
		1002
		1003	my $proxy = bless {
		1004	_pkg => $pkg,
		1005	argv => $argv,
		1006	}, $pkg;
		1007	Scalar::Util::weaken ($proxy->{term} = $self);
		1008
		1009	$self->{_pkg}{$pkg} = $proxy;
		1010
		1011	for my $name (@HOOKNAME) {
		1012	if (my $ref = $pkg->can ("on_" . lc $name)) {
		1013	$proxy->enable ($name => $ref);
		1014	}
		1015	}
		1016	}
		1017
		1018	=item $term = new urxvt::term $envhashref, $rxvtname, [arg...]
		1019
		1020	Creates a new terminal, very similar as if you had started it with system
		1021	C<$rxvtname, arg...>. C<$envhashref> must be a reference to a C<%ENV>-like
		1022	hash which defines the environment of the new terminal.
		1023
		1024	Croaks (and probably outputs an error message) if the new instance
		1025	couldn't be created. Returns C<undef> if the new instance didn't
		1026	initialise perl, and the terminal object otherwise. The C<init> and
		1027	C<start> hooks will be called during this call.
		1028
		1029	=cut
		1030
		1031	sub new {
		1032	my ($class, $env, @args) = @_;
		1033
		1034	_new ([ map "$_=$env->{$_}", keys %$env ], @args);
		1035	}
		1036
		1037	=item $term->destroy
		1038
		1039	Destroy the terminal object (close the window, free resources
		1040	etc.). Please note that @@RXVT_NAME@@ will not exit as long as any event
		1041	watchers (timers, io watchers) are still active.
		1042
		1043	=item $term->exec_async ($cmd[, @args])
		1044
		1045	Works like the combination of the C<fork>/C<exec> builtins, which executes
		1046	("starts") programs in the background. This function takes care of setting
		1047	the user environment before exec'ing the command (e.g. C<PATH>) and should
		1048	be preferred over explicit calls to C<exec> or C<system>.
		1049
		1050	Returns the pid of the subprocess or C<undef> on error.
		1051
		1052	=cut
		1053
		1054	sub exec_async {
		1055	my $self = shift;
		1056
		1057	my $pid = fork;
		1058
		1059	return $pid
		1060	if !defined $pid or $pid;
		1061
		1062	%ENV = %{ $self->env };
		1063
		1064	exec @_;
		1065	urxvt::_exit 255;
		1066	}
		1067
		1068	=item $isset = $term->option ($optval[, $set])
		1069
		1070	Returns true if the option specified by C<$optval> is enabled, and
		1071	optionally change it. All option values are stored by name in the hash
		1072	C<%urxvt::OPTION>. Options not enabled in this binary are not in the hash.
		1073
		1074	Here is a a likely non-exhaustive list of option names, please see the
		1075	source file F</src/optinc.h> to see the actual list:
		1076
		1077	borderLess console cursorBlink cursorUnderline hold iconic insecure
		1078	intensityStyles jumpScroll loginShell mapAlert meta8 mouseWheelScrollPage
		1079	override-redirect pastableTabs pointerBlank reverseVideo scrollBar
		1080	scrollBar_floating scrollBar_right scrollTtyKeypress scrollTtyOutput
		1081	scrollWithBuffer secondaryScreen secondaryScroll skipBuiltinGlyphs
		1082	transparent tripleclickwords utmpInhibit visualBell
487		1083
488	=item $value = $term->resource ($name[, $newval])	1084	=item $value = $term->resource ($name[, $newval])
489		1085
490	Returns the current resource value associated with a given name and	1086	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>	1087	optionally sets a new value. Setting values is most useful in the C<init>
…		…
501		1097
502	Please note that resource strings will currently only be freed when the	1098	Please note that resource strings will currently only be freed when the
503	terminal is destroyed, so changing options frequently will eat memory.	1099	terminal is destroyed, so changing options frequently will eat memory.
504		1100
505	Here is a a likely non-exhaustive list of resource names, not all of which	1101	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	1102	are supported in every build, please see the source file F</src/rsinc.h>
507	list:	1103	to see the actual list:
508		1104
509	answerbackstring backgroundPixmap backspace_key boldFont boldItalicFont	1105	answerbackstring backgroundPixmap backspace_key boldFont boldItalicFont
510	borderLess color cursorBlink cursorUnderline cutchars delete_key	1106	borderLess color cursorBlink cursorUnderline cutchars delete_key
511	display_name embed ext_bwidth fade font geometry hold iconName	1107	display_name embed ext_bwidth fade font geometry hold iconName
512	imFont imLocale inputMethod insecure int_bwidth intensityStyles	1108	imFont imLocale inputMethod insecure int_bwidth intensityStyles
513	italicFont jumpScroll lineSpace loginShell mapAlert menu meta8 modifier	1109	italicFont jumpScroll lineSpace loginShell mapAlert meta8 modifier
514	mouseWheelScrollPage name pastableTabs path perl_eval perl_ext_1 perl_ext_2	1110	mouseWheelScrollPage name override_redirect pastableTabs path perl_eval
515	perl_lib pointerBlank pointerBlankDelay preeditType print_pipe pty_fd	1111	perl_ext_1 perl_ext_2 perl_lib pointerBlank pointerBlankDelay
516	reverseVideo saveLines scrollBar scrollBar_align scrollBar_floating	1112	preeditType print_pipe pty_fd reverseVideo saveLines scrollBar
517	scrollBar_right scrollBar_thickness scrollTtyKeypress scrollTtyOutput	1113	scrollBar_align scrollBar_floating scrollBar_right scrollBar_thickness
518	scrollWithBuffer scrollstyle secondaryScreen secondaryScroll selectstyle	1114	scrollTtyKeypress scrollTtyOutput scrollWithBuffer scrollstyle
519	shade term_name title transparent transparent_all tripleclickwords	1115	secondaryScreen secondaryScroll selectstyle shade term_name title
520	utmpInhibit visualBell	1116	transient_for transparent transparent_all tripleclickwords utmpInhibit
		1117	visualBell
521		1118
522	=cut	1119	=cut
523		1120
524	sub urxvt::term::resource($$;$) {	1121	sub resource($$;$) {
525	my ($self, $name) = (shift, shift);	1122	my ($self, $name) = (shift, shift);
526	unshift @_, $self, $name, ($name =~ s/\s*\+\s*(\d+)$// ? $1 : 0);	1123	unshift @_, $self, $name, ($name =~ s/\s*\+\s*(\d+)$// ? $1 : 0);
527	goto &urxvt::term::_resource;	1124	&urxvt::term::_resource
528	}	1125	}
		1126
		1127	=item $value = $term->x_resource ($pattern)
		1128
		1129	Returns the X-Resource for the given pattern, excluding the program or
		1130	class name, i.e. C<< $term->x_resource ("boldFont") >> should return the
		1131	same value as used by this instance of rxvt-unicode. Returns C<undef> if no
		1132	resource with that pattern exists.
		1133
		1134	This method should only be called during the C<on_start> hook, as there is
		1135	only one resource database per display, and later invocations might return
		1136	the wrong resources.
		1137
		1138	=item $success = $term->parse_keysym ($keysym_spec, $command_string)
		1139
		1140	Adds a keymap translation exactly as specified via a resource. See the
		1141	C<keysym> resource in the @@RXVT_NAME@@(1) manpage.
529		1142
530	=item $rend = $term->rstyle ([$new_rstyle])	1143	=item $rend = $term->rstyle ([$new_rstyle])
531		1144
532	Return and optionally change the current rendition. Text that is output by	1145	Return and optionally change the current rendition. Text that is output by
533	the terminal application will use this style.	1146	the terminal application will use this style.
…		…
544	=item ($row, $col) = $term->selection_end ([$row, $col])	1157	=item ($row, $col) = $term->selection_end ([$row, $col])
545		1158
546	Return the current values of the selection mark, begin or end positions,	1159	Return the current values of the selection mark, begin or end positions,
547	and optionally set them to new values.	1160	and optionally set them to new values.
548		1161
		1162	=item $term->selection_make ($eventtime[, $rectangular])
		1163
		1164	Tries to make a selection as set by C<selection_beg> and
		1165	C<selection_end>. If C<$rectangular> is true (default: false), a
		1166	rectangular selection will be made. This is the prefered function to make
		1167	a selection.
		1168
549	=item $success = $term->selection_grab ($eventtime)	1169	=item $success = $term->selection_grab ($eventtime)
550		1170
551	Try to request the primary selection from the server (for example, as set	1171	Try to request the primary selection text from the server (for example, as
552	by the next method).	1172	set by the next method). No visual feedback will be given. This function
		1173	is mostly useful from within C<on_sel_grab> hooks.
553		1174
554	=item $oldtext = $term->selection ([$newtext])	1175	=item $oldtext = $term->selection ([$newtext])
555		1176
556	Return the current selection text and optionally replace it by C<$newtext>.	1177	Return the current selection text and optionally replace it by C<$newtext>.
557		1178
558	#=item $term->overlay ($x, $y, $text)	1179	=item $term->overlay_simple ($x, $y, $text)
559	#	1180
560	#Create a simple multi-line overlay box. See the next method for details.	1181	Create a simple multi-line overlay box. See the next method for details.
561	#	1182
562	#=cut	1183	=cut
563	#	1184
564	#sub urxvt::term::scr_overlay {	1185	sub overlay_simple {
565	# my ($self, $x, $y, $text) = @_;	1186	my ($self, $x, $y, $text) = @_;
566	#	1187
567	# my @lines = split /\n/, $text;	1188	my @lines = split /\n/, $text;
568	#	1189
569	# my $w = 0;	1190	my $w = List::Util::max map $self->strwidth ($_), @lines;
570	# for (map $self->strwidth ($_), @lines) {	1191
571	# $w = $_ if $w < $_;
572	# }
573	#
574	# $self->scr_overlay_new ($x, $y, $w, scalar @lines);	1192	my $overlay = $self->overlay ($x, $y, $w, scalar @lines);
575	# $self->scr_overlay_set (0, $_, $lines[$_]) for 0.. $#lines;	1193	$overlay->set (0, $_, $lines[$_]) for 0.. $#lines;
576	#}	1194
		1195	$overlay
		1196	}
577		1197
578	=item $term->overlay ($x, $y, $width, $height[, $rstyle[, $border]])	1198	=item $term->overlay ($x, $y, $width, $height[, $rstyle[, $border]])
579		1199
580	Create a new (empty) overlay at the given position with the given	1200	Create a new (empty) overlay at the given position with the given
581	width/height. C<$rstyle> defines the initial rendition style	1201	width/height. C<$rstyle> defines the initial rendition style
…		…
608		1228
609	If hidden, display the overlay again.	1229	If hidden, display the overlay again.
610		1230
611	=back	1231	=back
612		1232
		1233	=item $popup = $term->popup ($event)
		1234
		1235	Creates a new C<urxvt::popup> object that implements a popup menu. The
		1236	C<$event> I<must> be the event causing the menu to pop up (a button event,
		1237	currently).
		1238
		1239	=cut
		1240
		1241	sub popup {
		1242	my ($self, $event) = @_;
		1243
		1244	$self->grab ($event->{time}, 1)
		1245	or return;
		1246
		1247	my $popup = bless {
		1248	term => $self,
		1249	event => $event,
		1250	}, urxvt::popup::;
		1251
		1252	Scalar::Util::weaken $popup->{term};
		1253
		1254	$self->{_destroy}{$popup} = urxvt::destroy_hook { $popup->{popup}->destroy };
		1255	Scalar::Util::weaken $self->{_destroy}{$popup};
		1256
		1257	$popup
		1258	}
		1259
613	=item $cellwidth = $term->strwidth $string	1260	=item $cellwidth = $term->strwidth ($string)
614		1261
615	Returns the number of screen-cells this string would need. Correctly	1262	Returns the number of screen-cells this string would need. Correctly
616	accounts for wide and combining characters.	1263	accounts for wide and combining characters.
617		1264
618	=item $octets = $term->locale_encode $string	1265	=item $octets = $term->locale_encode ($string)
619		1266
620	Convert the given text string into the corresponding locale encoding.	1267	Convert the given text string into the corresponding locale encoding.
621		1268
622	=item $string = $term->locale_decode $octets	1269	=item $string = $term->locale_decode ($octets)
623		1270
624	Convert the given locale-encoded octets into a perl string.	1271	Convert the given locale-encoded octets into a perl string.
		1272
		1273	=item $term->scr_xor_span ($beg_row, $beg_col, $end_row, $end_col[, $rstyle])
		1274
		1275	XORs the rendition values in the given span with the provided value
		1276	(default: C<RS_RVid>), which I<MUST NOT> contain font styles. Useful in
		1277	refresh hooks to provide effects similar to the selection.
		1278
		1279	=item $term->scr_xor_rect ($beg_row, $beg_col, $end_row, $end_col[, $rstyle1[, $rstyle2]])
		1280
		1281	Similar to C<scr_xor_span>, but xors a rectangle instead. Trailing
		1282	whitespace will additionally be xored with the C<$rstyle2>, which defaults
		1283	to C<RS_RVid | RS_Uline>, which removes reverse video again and underlines
		1284	it instead. Both styles I<MUST NOT> contain font styles.
		1285
		1286	=item $term->scr_bell
		1287
		1288	Ring the bell!
625		1289
626	=item $term->scr_add_lines ($string)	1290	=item $term->scr_add_lines ($string)
627		1291
628	Write the given text string to the screen, as if output by the application	1292	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	1293	running inside the terminal. It may not contain command sequences (escape
…		…
632		1296
633	Normally its not a good idea to use this function, as programs might be	1297	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	1298	confused by changes in cursor position or scrolling. Its useful inside a
635	C<on_add_lines> hook, though.	1299	C<on_add_lines> hook, though.
636		1300
		1301	=item $term->scr_change_screen ($screen)
		1302
		1303	Switch to given screen - 0 primary, 1 secondary.
		1304
		1305	=item $term->cmd_parse ($octets)
		1306
		1307	Similar to C<scr_add_lines>, but the argument must be in the
		1308	locale-specific encoding of the terminal and can contain command sequences
		1309	(escape codes) that will be interpreted.
		1310
637	=item $term->tt_write ($octets)	1311	=item $term->tt_write ($octets)
638		1312
639	Write the octets given in C<$data> to the tty (i.e. as program input). To	1313	Write the octets given in C<$data> to the tty (i.e. as program input). To
640	pass characters instead of octets, you should convert your strings first	1314	pass characters instead of octets, you should convert your strings first
641	to the locale-specific encoding using C<< $term->locale_encode >>.	1315	to the locale-specific encoding using C<< $term->locale_encode >>.
642		1316
		1317	=item $old_events = $term->pty_ev_events ([$new_events])
		1318
		1319	Replaces the event mask of the pty watcher by the given event mask. Can
		1320	be used to suppress input and output handling to the pty/tty. See the
		1321	description of C<< urxvt::timer->events >>. Make sure to always restore
		1322	the previous value.
		1323
		1324	=item $fd = $term->pty_fd
		1325
		1326	Returns the master file descriptor for the pty in use, or C<-1> if no pty
		1327	is used.
		1328
		1329	=item $windowid = $term->parent
		1330
		1331	Return the window id of the toplevel window.
		1332
		1333	=item $windowid = $term->vt
		1334
		1335	Return the window id of the terminal window.
		1336
		1337	=item $term->vt_emask_add ($x_event_mask)
		1338
		1339	Adds the specified events to the vt event mask. Useful e.g. when you want
		1340	to receive pointer events all the times:
		1341
		1342	$term->vt_emask_add (urxvt::PointerMotionMask);
		1343
643	=item $window_width = $term->width	1344	=item $window_width = $term->width
644		1345
645	=item $window_height = $term->height	1346	=item $window_height = $term->height
646		1347
647	=item $font_width = $term->fwidth	1348	=item $font_width = $term->fwidth
…		…
660		1361
661	=item $max_scrollback = $term->saveLines	1362	=item $max_scrollback = $term->saveLines
662		1363
663	=item $nrow_plus_saveLines = $term->total_rows	1364	=item $nrow_plus_saveLines = $term->total_rows
664		1365
665	=item $lines_in_scrollback = $term->nsaved	1366	=item $topmost_scrollback_row = $term->top_row
666		1367
667	Return various integers describing terminal characteristics.	1368	Return various integers describing terminal characteristics.
668		1369
		1370	=item $x_display = $term->display_id
		1371
		1372	Return the DISPLAY used by rxvt-unicode.
		1373
		1374	=item $lc_ctype = $term->locale
		1375
		1376	Returns the LC_CTYPE category string used by this rxvt-unicode.
		1377
		1378	=item $env = $term->env
		1379
		1380	Returns a copy of the environment in effect for the terminal as a hashref
		1381	similar to C<\%ENV>.
		1382
		1383	=cut
		1384
		1385	sub env {
		1386	if (my $env = $_[0]->_env) {
		1387	+{ map /^([^=]+)(?:=(.*))?$/s && ($1 => $2), @$env }
		1388	} else {
		1389	+{ %ENV }
		1390	}
		1391	}
		1392
		1393	=item $modifiermask = $term->ModLevel3Mask
		1394
		1395	=item $modifiermask = $term->ModMetaMask
		1396
		1397	=item $modifiermask = $term->ModNumLockMask
		1398
		1399	Return the modifier masks corresponding to the "ISO Level 3 Shift" (often
		1400	AltGr), the meta key (often Alt) and the num lock key, if applicable.
		1401
		1402	=item $screen = $term->current_screen
		1403
		1404	Returns the currently displayed screen (0 primary, 1 secondary).
		1405
		1406	=item $cursor_is_hidden = $term->hidden_cursor
		1407
		1408	Returns wether the cursor is currently hidden or not.
		1409
669	=item $view_start = $term->view_start ([$newvalue])	1410	=item $view_start = $term->view_start ([$newvalue])
670		1411
671	Returns the negative row number of the topmost line. Minimum value is	1412	Returns the row number of the topmost displayed line. Maximum value is
672	C<0>, which displays the normal terminal contents. Larger values scroll	1413	C<0>, which displays the normal terminal contents. Lower values scroll
673	this many lines into the scrollback buffer.	1414	this many lines into the scrollback buffer.
674		1415
675	=item $term->want_refresh	1416	=item $term->want_refresh
676		1417
677	Requests a screen refresh. At the next opportunity, rxvt-unicode will	1418	Requests a screen refresh. At the next opportunity, rxvt-unicode will
…		…
692	line, starting at column C<$start_col> (default C<0>), which is useful	1433	line, starting at column C<$start_col> (default C<0>), which is useful
693	to replace only parts of a line. The font index in the rendition will	1434	to replace only parts of a line. The font index in the rendition will
694	automatically be updated.	1435	automatically be updated.
695		1436
696	C<$text> is in a special encoding: tabs and wide characters that use more	1437	C<$text> is in a special encoding: tabs and wide characters that use more
697	than one cell when displayed are padded with urxvt::NOCHAR characters	1438	than one cell when displayed are padded with C<$urxvt::NOCHAR> (chr 65535)
698	(C<chr 65535>). Characters with combining characters and other characters	1439	characters. Characters with combining characters and other characters that
699	that do not fit into the normal tetx encoding will be replaced with	1440	do not fit into the normal tetx encoding will be replaced with characters
700	characters in the private use area.	1441	in the private use area.
701		1442
702	You have to obey this encoding when changing text. The advantage is	1443	You have to obey this encoding when changing text. The advantage is
703	that C<substr> and similar functions work on screen cells and not on	1444	that C<substr> and similar functions work on screen cells and not on
704	characters.	1445	characters.
705		1446
…		…
735	about the logical line that row C<$row_number> is part of. It supports the	1476	about the logical line that row C<$row_number> is part of. It supports the
736	following methods:	1477	following methods:
737		1478
738	=over 4	1479	=over 4
739		1480
740	=item $text = $line->t	1481	=item $text = $line->t ([$new_text])
741		1482
742	Returns the full text of the line, similar to C<ROW_t>	1483	Returns or replaces the full text of the line, similar to C<ROW_t>
743		1484
744	=item $rend = $line->r	1485	=item $rend = $line->r ([$new_rend])
745		1486
746	Returns the full rendition array of the line, similar to C<ROW_r>	1487	Returns or replaces the full rendition array of the line, similar to C<ROW_r>
747		1488
748	=item $length = $line->l	1489	=item $length = $line->l
749		1490
750	Returns the length of the line in cells, similar to C<ROW_l>.	1491	Returns the length of the line in cells, similar to C<ROW_l>.
751		1492
…		…
756	Return the row number of the first/last row of the line, respectively.	1497	Return the row number of the first/last row of the line, respectively.
757		1498
758	=item $offset = $line->offset_of ($row, $col)	1499	=item $offset = $line->offset_of ($row, $col)
759		1500
760	Returns the character offset of the given row|col pair within the logical	1501	Returns the character offset of the given row|col pair within the logical
761	line.	1502	line. Works for rows outside the line, too, and returns corresponding
		1503	offsets outside the string.
762		1504
763	=item ($row, $col) = $line->coord_of ($offset)	1505	=item ($row, $col) = $line->coord_of ($offset)
764		1506
765	Translates a string offset into terminal coordinates again.	1507	Translates a string offset into terminal coordinates again.
766		1508
767	=back	1509	=back
768		1510
769	=cut	1511	=cut
770		1512
771	sub urxvt::term::line {	1513	sub line {
772	my ($self, $row) = @_;	1514	my ($self, $row) = @_;
773		1515
774	my $maxrow = $self->nrow - 1;	1516	my $maxrow = $self->nrow - 1;
775		1517
776	my ($beg, $end) = ($row, $row);	1518	my ($beg, $end) = ($row, $row);
…		…
840	$offset / $self->{ncol} + $self->{beg},	1582	$offset / $self->{ncol} + $self->{beg},
841	$offset % $self->{ncol}	1583	$offset % $self->{ncol}
842	)	1584	)
843	}	1585	}
844		1586
845	=item ($row, $col) = $line->coord_of ($offset)
846	=item $text = $term->special_encode $string	1587	=item $text = $term->special_encode $string
847		1588
848	Converts a perl string into the special encoding used by rxvt-unicode,	1589	Converts a perl string into the special encoding used by rxvt-unicode,
849	where one character corresponds to one screen cell. See	1590	where one character corresponds to one screen cell. See
850	C<< $term->ROW_t >> for details.	1591	C<< $term->ROW_t >> for details.
…		…
852	=item $string = $term->special_decode $text	1593	=item $string = $term->special_decode $text
853		1594
854	Converts rxvt-unicodes text reprsentation into a perl string. See	1595	Converts rxvt-unicodes text reprsentation into a perl string. See
855	C<< $term->ROW_t >> for details.	1596	C<< $term->ROW_t >> for details.
856		1597
		1598	=item $success = $term->grab_button ($button, $modifiermask)
		1599
		1600	Registers a synchronous button grab. See the XGrabButton manpage.
		1601
		1602	=item $success = $term->grab ($eventtime[, $sync])
		1603
		1604	Calls XGrabPointer and XGrabKeyboard in asynchronous (default) or
		1605	synchronous (C<$sync> is true). Also remembers the grab timestampe.
		1606
		1607	=item $term->allow_events_async
		1608
		1609	Calls XAllowEvents with AsyncBoth for the most recent grab.
		1610
		1611	=item $term->allow_events_sync
		1612
		1613	Calls XAllowEvents with SyncBoth for the most recent grab.
		1614
		1615	=item $term->allow_events_replay
		1616
		1617	Calls XAllowEvents with both ReplayPointer and ReplayKeyboard for the most
		1618	recent grab.
		1619
		1620	=item $term->ungrab
		1621
		1622	Calls XUngrab for the most recent grab. Is called automatically on
		1623	evaluation errors, as it is better to lose the grab in the error case as
		1624	the session.
		1625
		1626	=item $atom = $term->XInternAtom ($atom_name[, $only_if_exists])
		1627
		1628	=item $atom_name = $term->XGetAtomName ($atom)
		1629
		1630	=item @atoms = $term->XListProperties ($window)
		1631
		1632	=item ($type,$format,$octets) = $term->XGetWindowProperty ($window, $property)
		1633
		1634	=item $term->XChangeWindowProperty ($window, $property, $type, $format, $octets)
		1635
		1636	=item $term->XDeleteProperty ($window, $property)
		1637
		1638	=item $window = $term->DefaultRootWindow
		1639
		1640	=item $term->XReparentWindow ($window, $parent, [$x, $y])
		1641
		1642	=item $term->XMapWindow ($window)
		1643
		1644	=item $term->XUnmapWindow ($window)
		1645
		1646	=item $term->XMoveResizeWindow ($window, $x, $y, $width, $height)
		1647
		1648	=item ($x, $y, $child_window) = $term->XTranslateCoordinates ($src, $dst, $x, $y)
		1649
		1650	=item $term->XChangeInput ($window, $add_events[, $del_events])
		1651
		1652	Various X or X-related functions. The C<$term> object only serves as
		1653	the source of the display, otherwise those functions map more-or-less
		1654	directory onto the X functions of the same name.
		1655
857	=back	1656	=back
		1657
		1658	=cut
		1659
		1660	package urxvt::popup;
		1661
		1662	=head2 The C<urxvt::popup> Class
		1663
		1664	=over 4
		1665
		1666	=cut
		1667
		1668	sub add_item {
		1669	my ($self, $item) = @_;
		1670
		1671	$item->{rend}{normal} = "\x1b[0;30;47m" unless exists $item->{rend}{normal};
		1672	$item->{rend}{hover} = "\x1b[0;30;46m" unless exists $item->{rend}{hover};
		1673	$item->{rend}{active} = "\x1b[m" unless exists $item->{rend}{active};
		1674
		1675	$item->{render} ||= sub { $_[0]{text} };
		1676
		1677	push @{ $self->{item} }, $item;
		1678	}
		1679
		1680	=item $popup->add_title ($title)
		1681
		1682	Adds a non-clickable title to the popup.
		1683
		1684	=cut
		1685
		1686	sub add_title {
		1687	my ($self, $title) = @_;
		1688
		1689	$self->add_item ({
		1690	rend => { normal => "\x1b[38;5;11;44m", hover => "\x1b[38;5;11;44m", active => "\x1b[38;5;11;44m" },
		1691	text => $title,
		1692	activate => sub { },
		1693	});
		1694	}
		1695
		1696	=item $popup->add_separator ([$sepchr])
		1697
		1698	Creates a separator, optionally using the character given as C<$sepchr>.
		1699
		1700	=cut
		1701
		1702	sub add_separator {
		1703	my ($self, $sep) = @_;
		1704
		1705	$sep ||= "=";
		1706
		1707	$self->add_item ({
		1708	rend => { normal => "\x1b[0;30;47m", hover => "\x1b[0;30;47m", active => "\x1b[0;30;47m" },
		1709	text => "",
		1710	render => sub { $sep x $self->{term}->ncol },
		1711	activate => sub { },
		1712	});
		1713	}
		1714
		1715	=item $popup->add_button ($text, $cb)
		1716
		1717	Adds a clickable button to the popup. C<$cb> is called whenever it is
		1718	selected.
		1719
		1720	=cut
		1721
		1722	sub add_button {
		1723	my ($self, $text, $cb) = @_;
		1724
		1725	$self->add_item ({ type => "button", text => $text, activate => $cb});
		1726	}
		1727
		1728	=item $popup->add_toggle ($text, $cb, $initial_value)
		1729
		1730	Adds a toggle/checkbox item to the popup. Teh callback gets called
		1731	whenever it gets toggled, with a boolean indicating its value as its first
		1732	argument.
		1733
		1734	=cut
		1735
		1736	sub add_toggle {
		1737	my ($self, $text, $cb, $value) = @_;
		1738
		1739	my $item; $item = {
		1740	type => "button",
		1741	text => " $text",
		1742	value => $value,
		1743	render => sub { ($_[0]{value} ? "* " : " ") . $text },
		1744	activate => sub { $cb->($_[1]{value} = !$_[1]{value}); },
		1745	};
		1746
		1747	$self->add_item ($item);
		1748	}
		1749
		1750	=item $popup->show
		1751
		1752	Displays the popup (which is initially hidden).
		1753
		1754	=cut
		1755
		1756	sub show {
		1757	my ($self) = @_;
		1758
		1759	local $urxvt::popup::self = $self;
		1760
		1761	my $env = $self->{term}->env;
		1762	# we can't hope to reproduce the locale algorithm, so nuke LC_ALL and set LC_CTYPE.
		1763	delete $env->{LC_ALL};
		1764	$env->{LC_CTYPE} = $self->{term}->locale;
		1765
		1766	urxvt::term->new ($env, "popup",
		1767	"--perl-lib" => "", "--perl-ext-common" => "",
		1768	"-pty-fd" => -1, "-sl" => 0,
		1769	"-b" => 1, "-bd" => "grey80", "-bl", "-override-redirect",
		1770	"--transient-for" => $self->{term}->parent,
		1771	"-display" => $self->{term}->display_id,
		1772	"-pe" => "urxvt-popup")
		1773	or die "unable to create popup window\n";
		1774	}
		1775
		1776	sub DESTROY {
		1777	my ($self) = @_;
		1778
		1779	delete $self->{term}{_destroy}{$self};
		1780	$self->{term}->ungrab;
		1781	}
		1782
		1783	=back
		1784
		1785	=cut
		1786
		1787	package urxvt::watcher;
		1788
		1789	@urxvt::timer::ISA = __PACKAGE__;
		1790	@urxvt::iow::ISA = __PACKAGE__;
		1791	@urxvt::pw::ISA = __PACKAGE__;
		1792	@urxvt::iw::ISA = __PACKAGE__;
858		1793
859	=head2 The C<urxvt::timer> Class	1794	=head2 The C<urxvt::timer> Class
860		1795
861	This class implements timer watchers/events. Time is represented as a	1796	This class implements timer watchers/events. Time is represented as a
862	fractional number of seconds since the epoch. Example:	1797	fractional number of seconds since the epoch. Example:
…		…
901		1836
902	=item $timer = $timer->start ($tstamp)	1837	=item $timer = $timer->start ($tstamp)
903		1838
904	Set the event trigger time to C<$tstamp> and start the timer.	1839	Set the event trigger time to C<$tstamp> and start the timer.
905		1840
		1841	=item $timer = $timer->after ($delay)
		1842
		1843	Like C<start>, but sets the expiry timer to c<urxvt::NOW + $delay>.
		1844
906	=item $timer = $timer->stop	1845	=item $timer = $timer->stop
907		1846
908	Stop the timer.	1847	Stop the timer.
909		1848
910	=back	1849	=back
…		…
915		1854
916	$term->{socket} = ...	1855	$term->{socket} = ...
917	$term->{iow} = urxvt::iow	1856	$term->{iow} = urxvt::iow
918	->new	1857	->new
919	->fd (fileno $term->{socket})	1858	->fd (fileno $term->{socket})
920	->events (1) # wait for read data	1859	->events (urxvt::EVENT_READ)
921	->start	1860	->start
922	->cb (sub {	1861	->cb (sub {
923	my ($iow, $revents) = @_;	1862	my ($iow, $revents) = @_;
924	# $revents must be 1 here, no need to check	1863	# $revents must be 1 here, no need to check
925	sysread $term->{socket}, my $buf, 8192	1864	sysread $term->{socket}, my $buf, 8192
…		…
942		1881
943	Set the filedescriptor (not handle) to watch.	1882	Set the filedescriptor (not handle) to watch.
944		1883
945	=item $iow = $iow->events ($eventmask)	1884	=item $iow = $iow->events ($eventmask)
946		1885
947	Set the event mask to watch. Bit #0 (value C<1>) enables watching for read	1886	Set the event mask to watch. The only allowed values are
948	data, Bit #1 (value C<2>) enables watching for write data.	1887	C<urxvt::EVENT_READ> and C<urxvt::EVENT_WRITE>, which might be ORed
		1888	together, or C<urxvt::EVENT_NONE>.
949		1889
950	=item $iow = $iow->start	1890	=item $iow = $iow->start
951		1891
952	Start watching for requested events on the given handle.	1892	Start watching for requested events on the given handle.
953		1893
954	=item $iow = $iow->stop	1894	=item $iow = $iow->stop
955		1895
956	Stop watching for events on the given filehandle.	1896	Stop watching for events on the given filehandle.
		1897
		1898	=back
		1899
		1900	=head2 The C<urxvt::iw> Class
		1901
		1902	This class implements idle watchers, that get called automatically when
		1903	the process is idle. They should return as fast as possible, after doing
		1904	some useful work.
		1905
		1906	=over 4
		1907
		1908	=item $iw = new urxvt::iw
		1909
		1910	Create a new idle watcher object in stopped state.
		1911
		1912	=item $iw = $iw->cb (sub { my ($iw) = @_; ... })
		1913
		1914	Set the callback to be called when the watcher triggers.
		1915
		1916	=item $timer = $timer->start
		1917
		1918	Start the watcher.
		1919
		1920	=item $timer = $timer->stop
		1921
		1922	Stop the watcher.
		1923
		1924	=back
		1925
		1926	=head2 The C<urxvt::pw> Class
		1927
		1928	This class implements process watchers. They create an event whenever a
		1929	process exits, after which they stop automatically.
		1930
		1931	my $pid = fork;
		1932	...
		1933	$term->{pw} = urxvt::pw
		1934	->new
		1935	->start ($pid)
		1936	->cb (sub {
		1937	my ($pw, $exit_status) = @_;
		1938	...
		1939	});
		1940
		1941	=over 4
		1942
		1943	=item $pw = new urxvt::pw
		1944
		1945	Create a new process watcher in stopped state.
		1946
		1947	=item $pw = $pw->cb (sub { my ($pw, $exit_status) = @_; ... })
		1948
		1949	Set the callback to be called when the timer triggers.
		1950
		1951	=item $pw = $timer->start ($pid)
		1952
		1953	Tells the wqtcher to start watching for process C<$pid>.
		1954
		1955	=item $pw = $pw->stop
		1956
		1957	Stop the watcher.
957		1958
958	=back	1959	=back
959		1960
960	=head1 ENVIRONMENT	1961	=head1 ENVIRONMENT
961		1962
…		…
964	This variable controls the verbosity level of the perl extension. Higher	1965	This variable controls the verbosity level of the perl extension. Higher
965	numbers indicate more verbose output.	1966	numbers indicate more verbose output.
966		1967
967	=over 4	1968	=over 4
968		1969
969	=item =0 - only fatal messages	1970	=item == 0 - fatal messages
970		1971
971	=item =3 - script loading and management	1972	=item >= 3 - script loading and management
972		1973
973	=item =10 - all events received	1974	=item >=10 - all called hooks
		1975
		1976	=item >=11 - hook reutrn values
974		1977
975	=back	1978	=back
976		1979
977	=head1 AUTHOR	1980	=head1 AUTHOR
978		1981

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