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Revision 1.42 by root, Fri Jan 6 21:06:09 2006 UTC vs.
Revision 1.124 by root, Sun Jan 22 11:57:06 2006 UTC

…		…
17		17
18	@@RXVT_NAME@@ --perl-lib $HOME -pe grab_test	18	@@RXVT_NAME@@ --perl-lib $HOME -pe grab_test
19		19
20	=head1 DESCRIPTION	20	=head1 DESCRIPTION
21		21
22	Everytime a terminal object gets created, scripts specified via the	22	Everytime a terminal object gets created, extension scripts specified via
23	C<perl> resource are loaded and associated with it.	23	the C<perl> resource are loaded and associated with it.
24		24
25	Scripts are compiled in a 'use strict' and 'use utf8' environment, and	25	Scripts are compiled in a 'use strict' and 'use utf8' environment, and
26	thus must be encoded as UTF-8.	26	thus must be encoded as UTF-8.
27		27
28	Each script will only ever be loaded once, even in @@RXVT_NAME@@d, where	28	Each script will only ever be loaded once, even in @@RXVT_NAME@@d, where
29	scripts will be shared (but not enabled) for all terminals.	29	scripts will be shared (but not enabled) for all terminals.
30		30
31	=head2 Prepackaged Extensions	31	=head1 PREPACKAGED EXTENSIONS
32		32
33	This section describes the extensiosn delivered with this version. You can	33	This section describes the extensions delivered with this release. You can
34	find them in F<@@RXVT_LIBDIR@@/urxvt/perl/>.	34	find them in F<@@RXVT_LIBDIR@@/urxvt/perl/>.
35		35
36	You can activate them like this:	36	You can activate them like this:
37		37
38	@@RXVT_NAME@@ -pe <extensionname>	38	@@RXVT_NAME@@ -pe <extensionname>
39		39
		40	Or by adding them to the resource for extensions loaded by default:
		41
		42	URxvt.perl-ext-common: default,automove-background,selection-autotransform
		43
40	=over 4	44	=over 4
41		45
42	=item selection	46	=item selection (enabled by default)
43		47
44	Intelligent selection. This extension tries to be more intelligent when	48	(More) intelligent selection. This extension tries to be more intelligent
45	the user extends selections (double-click). Right now, it tries to select	49	when the user extends selections (double-click and further clicks). Right
46	urls and complete shell-quoted arguments, which is very convenient, too,	50	now, it tries to select words, urls and complete shell-quoted
47	if your F<ls> supports C<--quoting-style=shell>.	51	arguments, which is very convenient, too, if your F<ls> supports
		52	C<--quoting-style=shell>.
48		53
49	It also offers the following bindable event:	54	A double-click usually selects the word under the cursor, further clicks
		55	will enlarge the selection.
		56
		57	The selection works by trying to match a number of regexes and displaying
		58	them in increasing order of length. You can add your own regexes by
		59	specifying resources of the form:
		60
		61	URxvt.selection.pattern-0: perl-regex
		62	URxvt.selection.pattern-1: perl-regex
		63	...
		64
		65	The index number (0, 1...) must not have any holes, and each regex must
		66	contain at least one pair of capturing parentheses, which will be used for
		67	the match. For example, the followign adds a regex that matches everything
		68	between two vertical bars:
		69
		70	URxvt.selection.pattern-0: \\|([^|]+)\\|
		71
		72	You can look at the source of the selection extension to see more
		73	interesting uses, such as parsing a line from beginning to end.
		74
		75	This extension also offers following bindable keyboard commands:
50		76
51	=over 4	77	=over 4
52		78
53	=item rot13	79	=item rot13
54		80
…		…
56		82
57	URxvt.keysym.C-M-r: perl:selection:rot13	83	URxvt.keysym.C-M-r: perl:selection:rot13
58		84
59	=back	85	=back
60		86
61	=item digital-clock	87	=item option-popup (enabled by default)
62		88
63	Displays a digital clock using the built-in overlay.	89	Binds a popup menu to Ctrl-Button2 that lets you toggle (some) options at
		90	runtime.
		91
		92	=item selection-popup (enabled by default)
		93
		94	Binds a popup menu to Ctrl-Button3 that lets you convert the selection
		95	text into various other formats/action (such as uri unescaping, perl
		96	evaluation, web-browser starting etc.), depending on content.
		97
		98	Other extensions can extend this popup menu by pushing a code reference
		99	onto C<@{ $term->{selection_popup_hook} }>, that is called whenever the
		100	popup is displayed.
		101
		102	It's sole argument is the popup menu, which can be modified. The selection
		103	is in C<$_>, which can be used to decide wether to add something or not.
		104	It should either return nothing or a string and a code reference. The
		105	string will be used as button text and the code reference will be called
		106	when the button gets activated and should transform C<$_>.
		107
		108	The following will add an entry C<a to b> that transforms all C<a>s in
		109	the selection to C<b>s, but only if the selection currently contains any
		110	C<a>s:
		111
		112	push @{ $self->{term}{selection_popup_hook} }, sub {
		113	/a/ ? ("a to be" => sub { s/a/b/g }
		114	: ()
		115	};
		116
		117	=item searchable-scrollback<hotkey> (enabled by default)
		118
		119	Adds regex search functionality to the scrollback buffer, triggered
		120	by a hotkey (default: C<M-s>). While in search mode, normal terminal
		121	input/output is suspended and a regex is displayed at the bottom of the
		122	screen.
		123
		124	Inputting characters appends them to the regex and continues incremental
		125	search. C<BackSpace> removes a character from the regex, C<Up> and C<Down>
		126	search upwards/downwards in the scrollback buffer, C<End> jumps to the
		127	bottom. C<Escape> leaves search mode and returns to the point where search
		128	was started, while C<Enter> or C<Return> stay at the current position and
		129	additionally stores the first match in the current line into the primary
		130	selection.
		131
		132	=item readline (enabled by default)
		133
		134	A support package that tries to make editing with readline easier. At the
		135	moment, it reacts to clicking with the left mouse button by trying to
		136	move the text cursor to this position. It does so by generating as many
		137	cursor-left or cursor-right keypresses as required (the this only works
		138	for programs that correctly support wide characters).
		139
		140	To avoid too many false positives, this is only done when:
		141
		142	=over 4
		143
		144	=item - the mouse is on the same (multi-row-) line as the text cursor.
		145
		146	=item - the primary screen is currently being displayed.
		147
		148	=item - the text cursor is visible.
		149
		150	=back
		151
		152	The normal selection mechanism isn't disabled, so quick successive clicks
		153	might interfere with selection creation in harmless ways.
		154
		155	=item selection-autotransform
		156
		157	This selection allows you to do automatic transforms on a selection
		158	whenever a selection is made.
		159
		160	It works by specifying perl snippets (most useful is a single C<s///>
		161	operator) that modify C<$_> as resources:
		162
		163	URxvt.selection-autotransform.0: transform
		164	URxvt.selection-autotransform.1: transform
		165	...
		166
		167	For example, the following will transform selections of the form
		168	C<filename:number>, often seen in compiler messages, into C<vi +$filename
		169	$word>:
		170
		171	URxvt.selection-autotransform.0: s/^([^:[:space:]]+):(\\d+):?$/vi +$2 \\Q$1\\E\\x0d/
		172
		173	And this example matches the same,but replaces it with vi-commands you can
		174	paste directly into your (vi :) editor:
		175
		176	URxvt.selection-autotransform.0: s/^([^:[:space:]]+(\\d+):?$/:e \\Q$1\\E\\x0d:$2\\x0d/
		177
		178	Of course, this can be modified to suit your needs and your editor :)
		179
		180	To expand the example above to typical perl error messages ("XXX at
		181	FILENAME line YYY."), you need a slightly more elaborate solution:
		182
		183	URxvt.selection.pattern-0: ( at .*? line \\d+[,.])
		184	URxvt.selection-autotransform.0: s/^ at (.*?) line (\\d+)[,.]$/:e \\Q$1\E\\x0d:$2\\x0d/
		185
		186	The first line tells the selection code to treat the unchanging part of
		187	every error message as a selection pattern, and the second line transforms
		188	the message into vi commands to load the file.
		189
		190	=item tabbed
		191
		192	This transforms the terminal into a tabbar with additional terminals, that
		193	is, it implements what is commonly refered to as "tabbed terminal". The topmost line
		194	displays a "[NEW]" button, which, when clicked, will add a new tab, followed by one
		195	button per tab.
		196
		197	Clicking a button will activate that tab. Pressing B<Shift-Left> and
		198	B<Shift-Right> will switch to the tab left or right of the current one,
		199	while B<Shift-Down> creates a new tab.
64		200
65	=item mark-urls	201	=item mark-urls
66		202
67	Uses per-line display filtering (C<on_line_update>) to underline urls.	203	Uses per-line display filtering (C<on_line_update>) to underline urls and
		204	make them clickable. When middle-clicked, the program specified in the
		205	resource C<urlLauncher> (default C<x-www-browser>) will be started with
		206	the URL as first argument.
		207
		208	=item automove-background
		209
		210	This is basically a one-line extension that dynamically changes the background pixmap offset
		211	to the window position, in effect creating the same effect as pseudo transparency with
		212	a custom pixmap. No scaling is supported in this mode. Exmaple:
		213
		214	@@RXVT_NAME@@ -pixmap background.xpm -pe automove-background
68		215
69	=item block-graphics-to-ascii	216	=item block-graphics-to-ascii
70		217
71	A not very useful example of filtering all text output to the terminal,	218	A not very useful example of filtering all text output to the terminal,
72	by replacing all line-drawing characters (U+2500 .. U+259F) by a	219	by replacing all line-drawing characters (U+2500 .. U+259F) by a
73	similar-looking ascii character.	220	similar-looking ascii character.
74		221
		222	=item digital-clock
		223
		224	Displays a digital clock using the built-in overlay.
		225
75	=item example-refresh-hooks	226	=item example-refresh-hooks
76		227
77	Displays a very simple digital clock in the upper right corner of the	228	Displays a very simple digital clock in the upper right corner of the
78	window. Illustrates overwriting the refresh callbacks to create your own	229	window. Illustrates overwriting the refresh callbacks to create your own
79	overlays or changes.	230	overlays or changes.
80		231
		232	=item selection-pastebin
		233
		234	This is a little rarely useful extension that Uploads the selection as
		235	textfile to a remote site (or does other things). (The implementation is
		236	not currently secure for use in a multiuser environment as it writes to
		237	F</tmp> directly.).
		238
		239	It listens to the C<selection-pastebin:remote-pastebin> keyboard command,
		240	i.e.
		241
		242	URxvt.keysym.C-M-e: perl:selection-pastebin:remote-pastebin
		243
		244	Pressing this combination runs a command with C<%> replaced by the name of
		245	the textfile. This command can be set via a resource:
		246
		247	URxvt.selection-pastebin.cmd: rsync -apP % ruth:/var/www/www.ta-sa.org/files/txt/.
		248
		249	And the default is likely not useful to anybody but the few people around
		250	here :)
		251
		252	The name of the textfile is the hex encoded md5 sum of the selection, so
		253	the same content should lead to the same filename.
		254
		255	After a successful upload the selection will be replaced by the text given
		256	in the C<selection-pastebin-url> resource (again, the % is the placeholder
		257	for the filename):
		258
		259	URxvt.selection-pastebin.url: http://www.ta-sa.org/files/txt/%
		260
81	=back	261	=back
		262
		263	=head1 API DOCUMENTATION
82		264
83	=head2 General API Considerations	265	=head2 General API Considerations
84		266
85	All objects (such as terminals, time watchers etc.) are typical	267	All objects (such as terminals, time watchers etc.) are typical
86	reference-to-hash objects. The hash can be used to store anything you	268	reference-to-hash objects. The hash can be used to store anything you
…		…
99	=over 4	281	=over 4
100		282
101	=item $text	283	=item $text
102		284
103	Rxvt-unicodes special way of encoding text, where one "unicode" character	285	Rxvt-unicodes special way of encoding text, where one "unicode" character
104	always represents one screen cell. See L<row_t> for a discussion of this format.	286	always represents one screen cell. See L<ROW_t> for a discussion of this format.
105		287
106	=item $string	288	=item $string
107		289
108	A perl text string, with an emphasis on I<text>. It can store all unicode	290	A perl text string, with an emphasis on I<text>. It can store all unicode
109	characters and is to be distinguished with text encoded in a specific	291	characters and is to be distinguished with text encoded in a specific
…		…
114	Either binary data or - more common - a text string encoded in a	296	Either binary data or - more common - a text string encoded in a
115	locale-specific way.	297	locale-specific way.
116		298
117	=back	299	=back
118		300
		301	=head2 Extension Objects
		302
		303	Very perl extension is a perl class. A separate perl object is created
		304	for each terminal and each extension and passed as the first parameter to
		305	hooks. So extensions can use their C<$self> object without having to think
		306	about other extensions, with the exception of methods and members that
		307	begin with an underscore character C<_>: these are reserved for internal
		308	use.
		309
		310	Although it isn't a C<urxvt::term> object, you can call all methods of the
		311	C<urxvt::term> class on this object.
		312
		313	It has the following methods and data members:
		314
		315	=over 4
		316
		317	=item $urxvt_term = $self->{term}
		318
		319	Returns the C<urxvt::term> object associated with this instance of the
		320	extension. This member I<must not> be changed in any way.
		321
		322	=item $self->enable ($hook_name => $cb, [$hook_name => $cb..])
		323
		324	Dynamically enable the given hooks (named without the C<on_> prefix) for
		325	this extension, replacing any previous hook. This is useful when you want
		326	to overwrite time-critical hooks only temporarily.
		327
		328	=item $self->disable ($hook_name[, $hook_name..])
		329
		330	Dynamically disable the given hooks.
		331
		332	=back
		333
119	=head2 Hooks	334	=head2 Hooks
120		335
121	The following subroutines can be declared in loaded scripts, and will be	336	The following subroutines can be declared in extension files, and will be
122	called whenever the relevant event happens.	337	called whenever the relevant event happens.
123		338
124	The first argument passed to them is an object private to each terminal	339	The first argument passed to them is an extension oject as described in
125	and extension package. You can call all C<urxvt::term> methods on it, but	340	the in the C<Extension Objects> section.
126	its not a real C<urxvt::term> object. Instead, the real C<urxvt::term>
127	object that is shared between all packages is stored in the C<term>
128	member.
129		341
130	All of them must return a boolean value. If it is true, then the event	342	B<All> of these hooks must return a boolean value. If any of the called
131	counts as being I<consumed>, and the invocation of other hooks is skipped,	343	hooks returns true, then the event counts as being I<consumed>, and the
132	and the relevant action might not be carried out by the C++ code.	344	relevant action might not be carried out by the C++ code.
133		345
134	When in doubt, return a false value (preferably C<()>).	346	I<< When in doubt, return a false value (preferably C<()>). >>
135		347
136	=over 4	348	=over 4
137		349
138	=item on_init $term	350	=item on_init $term
139		351
140	Called after a new terminal object has been initialized, but before	352	Called after a new terminal object has been initialized, but before
141	windows are created or the command gets run. Most methods are unsafe to	353	windows are created or the command gets run. Most methods are unsafe to
142	call or deliver senseless data, as terminal size and other characteristics	354	call or deliver senseless data, as terminal size and other characteristics
143	have not yet been determined. You can safely query and change resources,	355	have not yet been determined. You can safely query and change resources
144	though.	356	and options, though. For many purposes the C<on_start> hook is a better
		357	place.
		358
		359	=item on_start $term
		360
		361	Called at the very end of initialisation of a new terminal, just before
		362	trying to map (display) the toplevel and returning to the mainloop.
		363
		364	=item on_destroy $term
		365
		366	Called whenever something tries to destroy terminal, before doing anything
		367	yet. If this hook returns true, then destruction is skipped, but this is
		368	rarely a good idea.
145		369
146	=item on_reset $term	370	=item on_reset $term
147		371
148	Called after the screen is "reset" for any reason, such as resizing or	372	Called after the screen is "reset" for any reason, such as resizing or
149	control sequences. Here is where you can react on changes to size-related	373	control sequences. Here is where you can react on changes to size-related
150	variables.	374	variables.
151		375
152	=item on_start $term	376	=item on_child_start $term, $pid
153		377
154	Called at the very end of initialisation of a new terminal, just before	378	Called just after the child process has been C<fork>ed.
155	returning to the mainloop.	379
		380	=item on_child_exit $term, $status
		381
		382	Called just after the child process has exited. C<$status> is the status
		383	from C<waitpid>.
156		384
157	=item on_sel_make $term, $eventtime	385	=item on_sel_make $term, $eventtime
158		386
159	Called whenever a selection has been made by the user, but before the	387	Called whenever a selection has been made by the user, but before the
160	selection text is copied, so changes to the beginning, end or type of the	388	selection text is copied, so changes to the beginning, end or type of the
…		…
174	=item on_sel_extend $term	402	=item on_sel_extend $term
175		403
176	Called whenever the user tries to extend the selection (e.g. with a double	404	Called whenever the user tries to extend the selection (e.g. with a double
177	click) and is either supposed to return false (normal operation), or	405	click) and is either supposed to return false (normal operation), or
178	should extend the selection itelf and return true to suppress the built-in	406	should extend the selection itelf and return true to suppress the built-in
179	processing.	407	processing. This can happen multiple times, as long as the callback
		408	returns true, it will be called on every further click by the user and is
		409	supposed to enlarge the selection more and more, if possible.
180		410
181	See the F<selection> example extension.	411	See the F<selection> example extension.
182
183	=item on_focus_in $term
184
185	Called whenever the window gets the keyboard focus, before urxvt does
186	focus in processing.
187
188	=item on_focus_out $term
189
190	Called wheneever the window loses keyboard focus, before urxvt does focus
191	out processing.
192		412
193	=item on_view_change $term, $offset	413	=item on_view_change $term, $offset
194		414
195	Called whenever the view offset changes, i..e the user or program	415	Called whenever the view offset changes, i..e the user or program
196	scrolls. Offset C<0> means display the normal terminal, positive values	416	scrolls. Offset C<0> means display the normal terminal, positive values
…		…
203	than the scroll back buffer or the terminal.	423	than the scroll back buffer or the terminal.
204		424
205	It is called before lines are scrolled out (so rows 0 .. min ($lines - 1,	425	It is called before lines are scrolled out (so rows 0 .. min ($lines - 1,
206	$nrow - 1) represent the lines to be scrolled out). C<$saved> is the total	426	$nrow - 1) represent the lines to be scrolled out). C<$saved> is the total
207	number of lines that will be in the scrollback buffer.	427	number of lines that will be in the scrollback buffer.
208
209	=item on_tty_activity $term *NYI*
210
211	Called whenever the program(s) running in the urxvt window send output.
212		428
213	=item on_osc_seq $term, $string	429	=item on_osc_seq $term, $string
214		430
215	Called whenever the B<ESC ] 777 ; string ST> command sequence (OSC =	431	Called whenever the B<ESC ] 777 ; string ST> command sequence (OSC =
216	operating system command) is processed. Cursor position and other state	432	operating system command) is processed. Cursor position and other state
…		…
229	can filter/change and output the text yourself by returning a true value	445	can filter/change and output the text yourself by returning a true value
230	and calling C<< $term->scr_add_lines >> yourself. Please note that this	446	and calling C<< $term->scr_add_lines >> yourself. Please note that this
231	might be very slow, however, as your hook is called for B<all> text being	447	might be very slow, however, as your hook is called for B<all> text being
232	output.	448	output.
233		449
		450	=item on_tt_write $term, $octets
		451
		452	Called whenever some data is written to the tty/pty and can be used to
		453	suppress or filter tty input.
		454
234	=item on_line_update $term, $row	455	=item on_line_update $term, $row
235		456
236	Called whenever a line was updated or changed. Can be used to filter	457	Called whenever a line was updated or changed. Can be used to filter
237	screen output (e.g. underline urls or other useless stuff). Only lines	458	screen output (e.g. underline urls or other useless stuff). Only lines
238	that are being shown will be filtered, and, due to performance reasons,	459	that are being shown will be filtered, and, due to performance reasons,
…		…
260		481
261	Called whenever the user presses a key combination that has a	482	Called whenever the user presses a key combination that has a
262	C<perl:string> action bound to it (see description of the B<keysym>	483	C<perl:string> action bound to it (see description of the B<keysym>
263	resource in the @@RXVT_NAME@@(1) manpage).	484	resource in the @@RXVT_NAME@@(1) manpage).
264		485
		486	=item on_x_event $term, $event
		487
		488	Called on every X event received on the vt window (and possibly other
		489	windows). Should only be used as a last resort. Most event structure
		490	members are not passed.
		491
		492	=item on_focus_in $term
		493
		494	Called whenever the window gets the keyboard focus, before rxvt-unicode
		495	does focus in processing.
		496
		497	=item on_focus_out $term
		498
		499	Called wheneever the window loses keyboard focus, before rxvt-unicode does
		500	focus out processing.
		501
		502	=item on_configure_notify $term, $event
		503
		504	=item on_property_notify $term, $event
		505
265	=item on_key_press $term, $event, $octets	506	=item on_key_press $term, $event, $keysym, $octets
266		507
267	=item on_key_release $term, $event	508	=item on_key_release $term, $event, $keysym
268		509
269	=item on_button_press $term, $event	510	=item on_button_press $term, $event
270		511
271	=item on_button_release $term, $event	512	=item on_button_release $term, $event
272		513
273	=item on_motion_notify $term, $event	514	=item on_motion_notify $term, $event
		515
		516	=item on_map_notify $term, $event
		517
		518	=item on_unmap_notify $term, $event
274		519
275	Called whenever the corresponding X event is received for the terminal If	520	Called whenever the corresponding X event is received for the terminal If
276	the hook returns true, then the even will be ignored by rxvt-unicode.	521	the hook returns true, then the even will be ignored by rxvt-unicode.
277		522
278	The event is a hash with most values as named by Xlib (see the XEvent	523	The event is a hash with most values as named by Xlib (see the XEvent
279	manpage), with the additional members C<row> and C<col>, which are the row	524	manpage), with the additional members C<row> and C<col>, which are the
280	and column under the mouse cursor.	525	(real, not screen-based) row and column under the mouse cursor.
281		526
282	C<on_key_press> additionally receives the string rxvt-unicode would	527	C<on_key_press> additionally receives the string rxvt-unicode would
283	output, if any, in locale-specific encoding.	528	output, if any, in locale-specific encoding.
284		529
285	subwindow.	530	subwindow.
286		531
		532	=item on_client_message $term, $event
		533
		534	=item on_wm_protocols $term, $event
		535
		536	=item on_wm_delete_window $term, $event
		537
		538	Called when various types of ClientMessage events are received (all with
		539	format=32, WM_PROTOCOLS or WM_PROTOCOLS:WM_DELETE_WINDOW).
		540
287	=back	541	=back
288		542
		543	=cut
		544
		545	package urxvt;
		546
		547	use utf8;
		548	use strict;
		549	use Carp ();
		550	use Scalar::Util ();
		551	use List::Util ();
		552
		553	our $VERSION = 1;
		554	our $TERM;
		555	our @TERM_INIT;
		556	our @TERM_EXT;
		557	our @HOOKNAME;
		558	our %HOOKTYPE = map +($HOOKNAME[$_] => $_), 0..$#HOOKNAME;
		559	our %OPTION;
		560
		561	our $LIBDIR;
		562	our $RESNAME;
		563	our $RESCLASS;
		564	our $RXVTNAME;
		565
		566	our $NOCHAR = chr 0xffff;
		567
289	=head2 Variables in the C<urxvt> Package	568	=head2 Variables in the C<urxvt> Package
290		569
291	=over 4	570	=over 4
292		571
		572	=item $urxvt::LIBDIR
		573
		574	The rxvt-unicode library directory, where, among other things, the perl
		575	modules and scripts are stored.
		576
		577	=item $urxvt::RESCLASS, $urxvt::RESCLASS
		578
		579	The resource class and name rxvt-unicode uses to look up X resources.
		580
		581	=item $urxvt::RXVTNAME
		582
		583	The basename of the installed binaries, usually C<urxvt>.
		584
293	=item $urxvt::TERM	585	=item $urxvt::TERM
294		586
295	The current terminal. Whenever a callback/Hook is bein executed, this	587	The current terminal. This variable stores the current C<urxvt::term>
296	variable stores the current C<urxvt::term> object.	588	object, whenever a callback/hook is executing.
		589
		590	=item @urxvt::TERM_INIT
		591
		592	All coderefs in this array will be called as methods of the next newly
		593	created C<urxvt::term> object (during the C<on_init> phase). The array
		594	gets cleared before the codereferences that were in it are being executed,
		595	so coderefs can push themselves onto it again if they so desire.
		596
		597	This complements to the perl-eval commandline option, but gets executed
		598	first.
		599
		600	=item @urxvt::TERM_EXT
		601
		602	Works similar to C<@TERM_INIT>, but contains perl package/class names, which
		603	get registered as normal extensions after calling the hooks in C<@TERM_INIT>
		604	but before other extensions. Gets cleared just like C<@TERM_INIT>.
297		605
298	=back	606	=back
299		607
300	=head2 Functions in the C<urxvt> Package	608	=head2 Functions in the C<urxvt> Package
301		609
302	=over 4	610	=over 4
303
304	=item $term = new urxvt [arg...]
305
306	Creates a new terminal, very similar as if you had started it with
307	C<system $binfile, arg...>. Croaks (and probably outputs an error message)
308	if the new instance couldn't be created. Returns C<undef> if the new
309	instance didn't initialise perl, and the terminal object otherwise. The
310	C<init> and C<start> hooks will be called during the call.
311		611
312	=item urxvt::fatal $errormessage	612	=item urxvt::fatal $errormessage
313		613
314	Fatally aborts execution with the given error message. Avoid at all	614	Fatally aborts execution with the given error message. Avoid at all
315	costs! The only time this is acceptable is when the terminal process	615	costs! The only time this is acceptable is when the terminal process
…		…
322	that calls this function.	622	that calls this function.
323		623
324	Using this function has the advantage that its output ends up in the	624	Using this function has the advantage that its output ends up in the
325	correct place, e.g. on stderr of the connecting urxvtc client.	625	correct place, e.g. on stderr of the connecting urxvtc client.
326		626
		627	Messages have a size limit of 1023 bytes currently.
		628
327	=item $time = urxvt::NOW	629	=item $time = urxvt::NOW
328		630
329	Returns the "current time" (as per the event loop).	631	Returns the "current time" (as per the event loop).
		632
		633	=item urxvt::CurrentTime
		634
		635	=item urxvt::ShiftMask, LockMask, ControlMask, Mod1Mask, Mod2Mask,
		636	Mod3Mask, Mod4Mask, Mod5Mask, Button1Mask, Button2Mask, Button3Mask,
		637	Button4Mask, Button5Mask, AnyModifier
		638
		639	=item urxvt::NoEventMask, KeyPressMask, KeyReleaseMask,
		640	ButtonPressMask, ButtonReleaseMask, EnterWindowMask, LeaveWindowMask,
		641	PointerMotionMask, PointerMotionHintMask, Button1MotionMask, Button2MotionMask,
		642	Button3MotionMask, Button4MotionMask, Button5MotionMask, ButtonMotionMask,
		643	KeymapStateMask, ExposureMask, VisibilityChangeMask, StructureNotifyMask,
		644	ResizeRedirectMask, SubstructureNotifyMask, SubstructureRedirectMask,
		645	FocusChangeMask, PropertyChangeMask, ColormapChangeMask, OwnerGrabButtonMask
		646
		647	=item urxvt::KeyPress, KeyRelease, ButtonPress, ButtonRelease, MotionNotify,
		648	EnterNotify, LeaveNotify, FocusIn, FocusOut, KeymapNotify, Expose,
		649	GraphicsExpose, NoExpose, VisibilityNotify, CreateNotify, DestroyNotify,
		650	UnmapNotify, MapNotify, MapRequest, ReparentNotify, ConfigureNotify,
		651	ConfigureRequest, GravityNotify, ResizeRequest, CirculateNotify,
		652	CirculateRequest, PropertyNotify, SelectionClear, SelectionRequest,
		653	SelectionNotify, ColormapNotify, ClientMessage, MappingNotify
		654
		655	Various constants for use in X calls and event processing.
330		656
331	=back	657	=back
332		658
333	=head2 RENDITION	659	=head2 RENDITION
334		660
…		…
361		687
362	=item $background = urxvt::GET_BASEBG $rend	688	=item $background = urxvt::GET_BASEBG $rend
363		689
364	Return the foreground/background colour index, respectively.	690	Return the foreground/background colour index, respectively.
365		691
366	=item $rend = urxvt::SET_FGCOLOR ($rend, $new_colour)	692	=item $rend = urxvt::SET_FGCOLOR $rend, $new_colour
367		693
368	=item $rend = urxvt::SET_BGCOLOR ($rend, $new_colour)	694	=item $rend = urxvt::SET_BGCOLOR $rend, $new_colour
369		695
370	Replace the foreground/background colour in the rendition mask with the	696	Replace the foreground/background colour in the rendition mask with the
371	specified one.	697	specified one.
372		698
373	=item $value = urxvt::GET_CUSTOM ($rend)	699	=item $value = urxvt::GET_CUSTOM $rend
374		700
375	Return the "custom" value: Every rendition has 5 bits for use by	701	Return the "custom" value: Every rendition has 5 bits for use by
376	extensions. They can be set and changed as you like and are initially	702	extensions. They can be set and changed as you like and are initially
377	zero.	703	zero.
378		704
379	=item $rend = urxvt::SET_CUSTOM ($rend, $new_value)	705	=item $rend = urxvt::SET_CUSTOM $rend, $new_value
380		706
381	Change the custom value.	707	Change the custom value.
382		708
383	=back	709	=back
384		710
385	=cut	711	=cut
386		712
387	package urxvt;
388
389	use strict;
390	use Scalar::Util ();
391
392	our $TERM;
393	our @HOOKNAME;
394	our $LIBDIR;
395
396	BEGIN {	713	BEGIN {
397	urxvt->bootstrap;
398
399	# overwrite perl's warn	714	# overwrite perl's warn
400	*CORE::GLOBAL::warn = sub {	715	*CORE::GLOBAL::warn = sub {
401	my $msg = join "", @_;	716	my $msg = join "", @_;
402	$msg .= "\n"	717	$msg .= "\n"
403	unless $msg =~ /\n$/;	718	unless $msg =~ /\n$/;
404	urxvt::warn ($msg);	719	urxvt::warn ($msg);
405	};	720	};
406	}	721	}
407		722
408	my @hook_count;	723	no warnings 'utf8';
		724
409	my $verbosity = $ENV{URXVT_PERL_VERBOSITY};	725	my $verbosity = $ENV{URXVT_PERL_VERBOSITY};
410		726
411	sub verbose {	727	sub verbose {
412	my ($level, $msg) = @_;	728	my ($level, $msg) = @_;
413	warn "$msg\n" if $level <= $verbosity;	729	warn "$msg\n" if $level <= $verbosity;
414	}	730	}
415		731
416	# find on_xxx subs in the package and register them	732	my %extension_pkg;
417	# as hooks
418	sub register_package($) {
419	my ($pkg) = @_;
420
421	for my $htype (0.. $#HOOKNAME) {
422	my $name = $HOOKNAME[$htype];
423
424	my $ref = $pkg->can ("on_" . lc $name)
425	or next;
426
427	$TERM->{_hook}[$htype]{$pkg} = $ref;
428	$hook_count[$htype]++
429	or set_should_invoke $htype, 1;
430	}
431	}
432
433	my $script_pkg = "script0000";
434	my %script_pkg;
435		733
436	# load a single script into its own package, once only	734	# load a single script into its own package, once only
437	sub script_package($) {	735	sub extension_package($) {
438	my ($path) = @_;	736	my ($path) = @_;
439		737
440	$script_pkg{$path} ||= do {	738	$extension_pkg{$path} ||= do {
441	my $pkg = "urxvt::" . ($script_pkg++);	739	$path =~ /([^\/\\]+)$/;
		740	my $pkg = $1;
		741	$pkg =~ s/[^[:word:]]/_/g;
		742	$pkg = "urxvt::ext::$pkg";
442		743
443	verbose 3, "loading script '$path' into package '$pkg'";	744	verbose 3, "loading extension '$path' into package '$pkg'";
444		745
445	open my $fh, "<:raw", $path	746	open my $fh, "<:raw", $path
446	or die "$path: $!";	747	or die "$path: $!";
447		748
448	my $source = "package $pkg; use strict; use utf8;\n"	749	my $source =
		750	"package $pkg; use strict; use utf8; no warnings 'utf8';\n"
449	. "#line 1 \"$path\"\n{\n"	751	. "#line 1 \"$path\"\n{\n"
450	. (do { local $/; <$fh> })	752	. (do { local $/; <$fh> })
451	. "\n};\n1";	753	. "\n};\n1";
452		754
		755	eval $source
453	eval $source or die "$path: $@";	756	or die "$path: $@";
454		757
455	$pkg	758	$pkg
456	}	759	}
457	}	760	}
458		761
…		…
463	local $TERM = shift;	766	local $TERM = shift;
464	my $htype = shift;	767	my $htype = shift;
465		768
466	if ($htype == 0) { # INIT	769	if ($htype == 0) { # INIT
467	my @dirs = ((split /:/, $TERM->resource ("perl_lib")), "$LIBDIR/perl");	770	my @dirs = ((split /:/, $TERM->resource ("perl_lib")), "$LIBDIR/perl");
		771
		772	my %ext_arg;
468		773
		774	{
		775	my @init = @TERM_INIT;
		776	@TERM_INIT = ();
		777	$_->($TERM) for @init;
		778	my @pkg = @TERM_EXT;
		779	@TERM_EXT = ();
		780	$TERM->register_package ($_) for @pkg;
		781	}
		782
469	for my $ext (map { split /,/, $TERM->resource ("perl_ext_$_") } 1, 2) {	783	for (grep $_, map { split /,/, $TERM->resource ("perl_ext_$_") } 1, 2) {
		784	if ($_ eq "default") {
		785	$ext_arg{$_} ||= [] for qw(selection option-popup selection-popup searchable-scrollback readline);
		786	} elsif (/^-(.*)$/) {
		787	delete $ext_arg{$1};
		788	} elsif (/^([^<]+)<(.*)>$/) {
		789	push @{ $ext_arg{$1} }, $2;
		790	} else {
		791	$ext_arg{$_} ||= [];
		792	}
		793	}
		794
		795	while (my ($ext, $argv) = each %ext_arg) {
470	my @files = grep -f $_, map "$_/$ext", @dirs;	796	my @files = grep -f $_, map "$_/$ext", @dirs;
471		797
472	if (@files) {	798	if (@files) {
473	register_package script_package $files[0];	799	$TERM->register_package (extension_package $files[0], $argv);
474	} else {	800	} else {
475	warn "perl extension '$ext' not found in perl library search path\n";	801	warn "perl extension '$ext' not found in perl library search path\n";
476	}	802	}
477	}	803	}
		804
		805	eval "#line 1 \"--perl-eval resource/argument\"\n" . $TERM->resource ("perl_eval");
		806	warn $@ if $@;
478	}	807	}
479		808
480	$retval = undef;	809	$retval = undef;
481		810
482	if (my $cb = $TERM->{_hook}[$htype]) {	811	if (my $cb = $TERM->{_hook}[$htype]) {
…		…
484	if $verbosity >= 10;	813	if $verbosity >= 10;
485		814
486	keys %$cb;	815	keys %$cb;
487		816
488	while (my ($pkg, $cb) = each %$cb) {	817	while (my ($pkg, $cb) = each %$cb) {
489	$retval = $cb->(	818	my $retval_ = eval { $cb->($TERM->{_pkg}{$pkg}, @_) };
490	$TERM->{_pkg}{$pkg} ||= do {	819	$retval ||= $retval_;
491	my $proxy = bless { }, urxvt::term::proxy::;
492	Scalar::Util::weaken ($proxy->{term} = $TERM);
493	$proxy
494	},
495	@_,
496	) and last;
497	}
498	}
499		820
500	if ($htype == 1) { # DESTROY	821	if ($@) {
501	# remove hooks if unused	822	$TERM->ungrab; # better to lose the grab than the session
502	if (my $hook = $TERM->{_hook}) {	823	warn $@;
503	for my $htype (0..$#$hook) {
504	$hook_count[$htype] -= scalar keys %{ $hook->[$htype] || {} }
505	or set_should_invoke $htype, 0;
506	}	824	}
507	}	825	}
508		826
		827	verbose 11, "$HOOKNAME[$htype] returning <$retval>"
		828	if $verbosity >= 11;
		829	}
		830
		831	if ($htype == 1) { # DESTROY
509	# clear package objects	832	# clear package objects
510	%$_ = () for values %{ $TERM->{_pkg} };	833	%$_ = () for values %{ $TERM->{_pkg} };
511		834
512	# clear package	835	# clear package
513	%$TERM = ();	836	%$TERM = ();
514	}	837	}
515		838
516	$retval	839	$retval
517	}	840	}
518		841
519	sub urxvt::term::proxy::AUTOLOAD {	842	# urxvt::term::extension
520	$urxvt::term::proxy::AUTOLOAD =~ /:([^:]+)$/	843
		844	package urxvt::term::extension;
		845
		846	sub enable {
		847	my ($self, %hook) = @_;
		848	my $pkg = $self->{_pkg};
		849
		850	while (my ($name, $cb) = each %hook) {
		851	my $htype = $HOOKTYPE{uc $name};
		852	defined $htype
		853	or Carp::croak "unsupported hook type '$name'";
		854
		855	$self->set_should_invoke ($htype, +1)
		856	unless exists $self->{term}{_hook}[$htype]{$pkg};
		857
		858	$self->{term}{_hook}[$htype]{$pkg} = $cb;
		859	}
		860	}
		861
		862	sub disable {
		863	my ($self, @hook) = @_;
		864	my $pkg = $self->{_pkg};
		865
		866	for my $name (@hook) {
		867	my $htype = $HOOKTYPE{uc $name};
		868	defined $htype
		869	or Carp::croak "unsupported hook type '$name'";
		870
		871	$self->set_should_invoke ($htype, -1)
		872	if delete $self->{term}{_hook}[$htype]{$pkg};
		873	}
		874	}
		875
		876	our $AUTOLOAD;
		877
		878	sub AUTOLOAD {
		879	$AUTOLOAD =~ /:([^:]+)$/
521	or die "FATAL: \$AUTOLOAD '$urxvt::term::proxy::AUTOLOAD' unparsable";	880	or die "FATAL: \$AUTOLOAD '$AUTOLOAD' unparsable";
522		881
523	eval qq{	882	eval qq{
524	sub $urxvt::term::proxy::AUTOLOAD {	883	sub $AUTOLOAD {
525	my \$proxy = shift;	884	my \$proxy = shift;
526	\$proxy->{term}->$1 (\@_)	885	\$proxy->{term}->$1 (\@_)
527	}	886	}
528	1	887	1
529	} or die "FATAL: unable to compile method forwarder: $@";	888	} or die "FATAL: unable to compile method forwarder: $@";
530		889
531	goto &$urxvt::term::proxy::AUTOLOAD;	890	goto &$AUTOLOAD;
532	}	891	}
		892
		893	sub DESTROY {
		894	# nop
		895	}
		896
		897	# urxvt::destroy_hook
		898
		899	sub urxvt::destroy_hook::DESTROY {
		900	${$_[0]}->();
		901	}
		902
		903	sub urxvt::destroy_hook(&) {
		904	bless \shift, urxvt::destroy_hook::
		905	}
		906
		907	package urxvt::anyevent;
		908
		909	=head2 The C<urxvt::anyevent> Class
		910
		911	The sole purpose of this class is to deliver an interface to the
		912	C<AnyEvent> module - any module using it will work inside urxvt without
		913	further programming. The only exception is that you cannot wait on
		914	condition variables, but non-blocking condvar use is ok. What this means
		915	is that you cannot use blocking APIs, but the non-blocking variant should
		916	work.
		917
		918	=cut
		919
		920	our $VERSION = 1;
		921
		922	$INC{"urxvt/anyevent.pm"} = 1; # mark us as there
		923	push @AnyEvent::REGISTRY, [urxvt => urxvt::anyevent::];
		924
		925	sub timer {
		926	my ($class, %arg) = @_;
		927
		928	my $cb = $arg{cb};
		929
		930	urxvt::timer
		931	->new
		932	->start (urxvt::NOW + $arg{after})
		933	->cb (sub {
		934	$_[0]->stop; # need to cancel manually
		935	$cb->();
		936	})
		937	}
		938
		939	sub io {
		940	my ($class, %arg) = @_;
		941
		942	my $cb = $arg{cb};
		943
		944	bless [$arg{fh}, urxvt::iow
		945	->new
		946	->fd (fileno $arg{fh})
		947	->events (($arg{poll} =~ /r/ ? 1 : 0)
		948	| ($arg{poll} =~ /w/ ? 2 : 0))
		949	->start
		950	->cb (sub {
		951	$cb->(($_[1] & 1 ? 'r' : '')
		952	. ($_[1] & 2 ? 'w' : ''));
		953	})],
		954	urxvt::anyevent::
		955	}
		956
		957	sub DESTROY {
		958	$_[0][1]->stop;
		959	}
		960
		961	sub condvar {
		962	bless \my $flag, urxvt::anyevent::condvar::
		963	}
		964
		965	sub urxvt::anyevent::condvar::broadcast {
		966	${$_[0]}++;
		967	}
		968
		969	sub urxvt::anyevent::condvar::wait {
		970	unless (${$_[0]}) {
		971	Carp::croak "AnyEvent->condvar blocking wait unsupported in urxvt, use a non-blocking API";
		972	}
		973	}
		974
		975	package urxvt::term;
533		976
534	=head2 The C<urxvt::term> Class	977	=head2 The C<urxvt::term> Class
535		978
536	=over 4	979	=over 4
537		980
		981	=cut
		982
		983	# find on_xxx subs in the package and register them
		984	# as hooks
		985	sub register_package {
		986	my ($self, $pkg, $argv) = @_;
		987
		988	no strict 'refs';
		989
		990	urxvt::verbose 6, "register package $pkg to $self";
		991
		992	@{"$pkg\::ISA"} = urxvt::term::extension::;
		993
		994	my $proxy = bless {
		995	_pkg => $pkg,
		996	argv => $argv,
		997	}, $pkg;
		998	Scalar::Util::weaken ($proxy->{term} = $self);
		999
		1000	$self->{_pkg}{$pkg} = $proxy;
		1001
		1002	for my $name (@HOOKNAME) {
		1003	if (my $ref = $pkg->can ("on_" . lc $name)) {
		1004	$proxy->enable ($name => $ref);
		1005	}
		1006	}
		1007	}
		1008
		1009	=item $term = new urxvt::term $envhashref, $rxvtname, [arg...]
		1010
		1011	Creates a new terminal, very similar as if you had started it with system
		1012	C<$rxvtname, arg...>. C<$envhashref> must be a reference to a C<%ENV>-like
		1013	hash which defines the environment of the new terminal.
		1014
		1015	Croaks (and probably outputs an error message) if the new instance
		1016	couldn't be created. Returns C<undef> if the new instance didn't
		1017	initialise perl, and the terminal object otherwise. The C<init> and
		1018	C<start> hooks will be called during this call.
		1019
		1020	=cut
		1021
		1022	sub new {
		1023	my ($class, $env, @args) = @_;
		1024
		1025	_new ([ map "$_=$env->{$_}", keys %$env ], @args);
		1026	}
		1027
538	=item $term->destroy	1028	=item $term->destroy
539		1029
540	Destroy the terminal object (close the window, free resources etc.).	1030	Destroy the terminal object (close the window, free resources
		1031	etc.). Please note that @@RXVT_NAME@@ will not exit as long as any event
		1032	watchers (timers, io watchers) are still active.
		1033
		1034	=item $term->exec_async ($cmd[, @args])
		1035
		1036	Works like the combination of the C<fork>/C<exec> builtins, which executes
		1037	("starts") programs in the background. This function takes care of setting
		1038	the user environment before exec'ing the command (e.g. C<PATH>) and should
		1039	be preferred over explicit calls to C<exec> or C<system>.
		1040
		1041	Returns the pid of the subprocess or C<undef> on error.
		1042
		1043	=cut
		1044
		1045	sub exec_async {
		1046	my $self = shift;
		1047
		1048	my $pid = fork;
		1049
		1050	return $pid
		1051	if !defined $pid or $pid;
		1052
		1053	%ENV = %{ $self->env };
		1054
		1055	exec @_;
		1056	urxvt::_exit 255;
		1057	}
		1058
		1059	=item $isset = $term->option ($optval[, $set])
		1060
		1061	Returns true if the option specified by C<$optval> is enabled, and
		1062	optionally change it. All option values are stored by name in the hash
		1063	C<%urxvt::OPTION>. Options not enabled in this binary are not in the hash.
		1064
		1065	Here is a a likely non-exhaustive list of option names, please see the
		1066	source file F</src/optinc.h> to see the actual list:
		1067
		1068	borderLess console cursorBlink cursorUnderline hold iconic insecure
		1069	intensityStyles jumpScroll loginShell mapAlert meta8 mouseWheelScrollPage
		1070	override-redirect pastableTabs pointerBlank reverseVideo scrollBar
		1071	scrollBar_floating scrollBar_right scrollTtyKeypress scrollTtyOutput
		1072	scrollWithBuffer secondaryScreen secondaryScroll skipBuiltinGlyphs
		1073	transparent tripleclickwords utmpInhibit visualBell
541		1074
542	=item $value = $term->resource ($name[, $newval])	1075	=item $value = $term->resource ($name[, $newval])
543		1076
544	Returns the current resource value associated with a given name and	1077	Returns the current resource value associated with a given name and
545	optionally sets a new value. Setting values is most useful in the C<init>	1078	optionally sets a new value. Setting values is most useful in the C<init>
…		…
555		1088
556	Please note that resource strings will currently only be freed when the	1089	Please note that resource strings will currently only be freed when the
557	terminal is destroyed, so changing options frequently will eat memory.	1090	terminal is destroyed, so changing options frequently will eat memory.
558		1091
559	Here is a a likely non-exhaustive list of resource names, not all of which	1092	Here is a a likely non-exhaustive list of resource names, not all of which
560	are supported in every build, please see the source to see the actual	1093	are supported in every build, please see the source file F</src/rsinc.h>
561	list:	1094	to see the actual list:
562		1095
563	answerbackstring backgroundPixmap backspace_key boldFont boldItalicFont	1096	answerbackstring backgroundPixmap backspace_key boldFont boldItalicFont
564	borderLess color cursorBlink cursorUnderline cutchars delete_key	1097	borderLess color cursorBlink cursorUnderline cutchars delete_key
565	display_name embed ext_bwidth fade font geometry hold iconName	1098	display_name embed ext_bwidth fade font geometry hold iconName
566	imFont imLocale inputMethod insecure int_bwidth intensityStyles	1099	imFont imLocale inputMethod insecure int_bwidth intensityStyles
567	italicFont jumpScroll lineSpace loginShell mapAlert menu meta8 modifier	1100	italicFont jumpScroll lineSpace loginShell mapAlert meta8 modifier
568	mouseWheelScrollPage name pastableTabs path perl_eval perl_ext_1 perl_ext_2	1101	mouseWheelScrollPage name override_redirect pastableTabs path perl_eval
569	perl_lib pointerBlank pointerBlankDelay preeditType print_pipe pty_fd	1102	perl_ext_1 perl_ext_2 perl_lib pointerBlank pointerBlankDelay
570	reverseVideo saveLines scrollBar scrollBar_align scrollBar_floating	1103	preeditType print_pipe pty_fd reverseVideo saveLines scrollBar
571	scrollBar_right scrollBar_thickness scrollTtyKeypress scrollTtyOutput	1104	scrollBar_align scrollBar_floating scrollBar_right scrollBar_thickness
572	scrollWithBuffer scrollstyle secondaryScreen secondaryScroll selectstyle	1105	scrollTtyKeypress scrollTtyOutput scrollWithBuffer scrollstyle
573	shade term_name title transparent transparent_all tripleclickwords	1106	secondaryScreen secondaryScroll selectstyle shade term_name title
574	utmpInhibit visualBell	1107	transient_for transparent transparent_all tripleclickwords utmpInhibit
		1108	visualBell
575		1109
576	=cut	1110	=cut
577		1111
578	sub urxvt::term::resource($$;$) {	1112	sub resource($$;$) {
579	my ($self, $name) = (shift, shift);	1113	my ($self, $name) = (shift, shift);
580	unshift @_, $self, $name, ($name =~ s/\s*\+\s*(\d+)$// ? $1 : 0);	1114	unshift @_, $self, $name, ($name =~ s/\s*\+\s*(\d+)$// ? $1 : 0);
581	goto &urxvt::term::_resource;	1115	&urxvt::term::_resource
582	}	1116	}
		1117
		1118	=item $value = $term->x_resource ($pattern)
		1119
		1120	Returns the X-Resource for the given pattern, excluding the program or
		1121	class name, i.e. C<< $term->x_resource ("boldFont") >> should return the
		1122	same value as used by this instance of rxvt-unicode. Returns C<undef> if no
		1123	resource with that pattern exists.
		1124
		1125	This method should only be called during the C<on_start> hook, as there is
		1126	only one resource database per display, and later invocations might return
		1127	the wrong resources.
		1128
		1129	=item $success = $term->parse_keysym ($keysym_spec, $command_string)
		1130
		1131	Adds a keymap translation exactly as specified via a resource. See the
		1132	C<keysym> resource in the @@RXVT_NAME@@(1) manpage.
583		1133
584	=item $rend = $term->rstyle ([$new_rstyle])	1134	=item $rend = $term->rstyle ([$new_rstyle])
585		1135
586	Return and optionally change the current rendition. Text that is output by	1136	Return and optionally change the current rendition. Text that is output by
587	the terminal application will use this style.	1137	the terminal application will use this style.
…		…
598	=item ($row, $col) = $term->selection_end ([$row, $col])	1148	=item ($row, $col) = $term->selection_end ([$row, $col])
599		1149
600	Return the current values of the selection mark, begin or end positions,	1150	Return the current values of the selection mark, begin or end positions,
601	and optionally set them to new values.	1151	and optionally set them to new values.
602		1152
		1153	=item $term->selection_make ($eventtime[, $rectangular])
		1154
		1155	Tries to make a selection as set by C<selection_beg> and
		1156	C<selection_end>. If C<$rectangular> is true (default: false), a
		1157	rectangular selection will be made. This is the prefered function to make
		1158	a selection.
		1159
603	=item $success = $term->selection_grab ($eventtime)	1160	=item $success = $term->selection_grab ($eventtime)
604		1161
605	Try to request the primary selection from the server (for example, as set	1162	Try to request the primary selection text from the server (for example, as
606	by the next method).	1163	set by the next method). No visual feedback will be given. This function
		1164	is mostly useful from within C<on_sel_grab> hooks.
607		1165
608	=item $oldtext = $term->selection ([$newtext])	1166	=item $oldtext = $term->selection ([$newtext])
609		1167
610	Return the current selection text and optionally replace it by C<$newtext>.	1168	Return the current selection text and optionally replace it by C<$newtext>.
611		1169
612	#=item $term->overlay ($x, $y, $text)	1170	=item $term->overlay_simple ($x, $y, $text)
613	#	1171
614	#Create a simple multi-line overlay box. See the next method for details.	1172	Create a simple multi-line overlay box. See the next method for details.
615	#	1173
616	#=cut	1174	=cut
617	#	1175
618	#sub urxvt::term::scr_overlay {	1176	sub overlay_simple {
619	# my ($self, $x, $y, $text) = @_;	1177	my ($self, $x, $y, $text) = @_;
620	#	1178
621	# my @lines = split /\n/, $text;	1179	my @lines = split /\n/, $text;
622	#	1180
623	# my $w = 0;	1181	my $w = List::Util::max map $self->strwidth ($_), @lines;
624	# for (map $self->strwidth ($_), @lines) {	1182
625	# $w = $_ if $w < $_;
626	# }
627	#
628	# $self->scr_overlay_new ($x, $y, $w, scalar @lines);	1183	my $overlay = $self->overlay ($x, $y, $w, scalar @lines);
629	# $self->scr_overlay_set (0, $_, $lines[$_]) for 0.. $#lines;	1184	$overlay->set (0, $_, $lines[$_]) for 0.. $#lines;
630	#}	1185
		1186	$overlay
		1187	}
631		1188
632	=item $term->overlay ($x, $y, $width, $height[, $rstyle[, $border]])	1189	=item $term->overlay ($x, $y, $width, $height[, $rstyle[, $border]])
633		1190
634	Create a new (empty) overlay at the given position with the given	1191	Create a new (empty) overlay at the given position with the given
635	width/height. C<$rstyle> defines the initial rendition style	1192	width/height. C<$rstyle> defines the initial rendition style
…		…
662		1219
663	If hidden, display the overlay again.	1220	If hidden, display the overlay again.
664		1221
665	=back	1222	=back
666		1223
		1224	=item $popup = $term->popup ($event)
		1225
		1226	Creates a new C<urxvt::popup> object that implements a popup menu. The
		1227	C<$event> I<must> be the event causing the menu to pop up (a button event,
		1228	currently).
		1229
		1230	=cut
		1231
		1232	sub popup {
		1233	my ($self, $event) = @_;
		1234
		1235	$self->grab ($event->{time}, 1)
		1236	or return;
		1237
		1238	my $popup = bless {
		1239	term => $self,
		1240	event => $event,
		1241	}, urxvt::popup::;
		1242
		1243	Scalar::Util::weaken $popup->{term};
		1244
		1245	$self->{_destroy}{$popup} = urxvt::destroy_hook { $popup->{popup}->destroy };
		1246	Scalar::Util::weaken $self->{_destroy}{$popup};
		1247
		1248	$popup
		1249	}
		1250
667	=item $cellwidth = $term->strwidth ($string)	1251	=item $cellwidth = $term->strwidth ($string)
668		1252
669	Returns the number of screen-cells this string would need. Correctly	1253	Returns the number of screen-cells this string would need. Correctly
670	accounts for wide and combining characters.	1254	accounts for wide and combining characters.
671		1255
…		…
674	Convert the given text string into the corresponding locale encoding.	1258	Convert the given text string into the corresponding locale encoding.
675		1259
676	=item $string = $term->locale_decode ($octets)	1260	=item $string = $term->locale_decode ($octets)
677		1261
678	Convert the given locale-encoded octets into a perl string.	1262	Convert the given locale-encoded octets into a perl string.
		1263
		1264	=item $term->scr_xor_span ($beg_row, $beg_col, $end_row, $end_col[, $rstyle])
		1265
		1266	XORs the rendition values in the given span with the provided value
		1267	(default: C<RS_RVid>), which I<MUST NOT> contain font styles. Useful in
		1268	refresh hooks to provide effects similar to the selection.
		1269
		1270	=item $term->scr_xor_rect ($beg_row, $beg_col, $end_row, $end_col[, $rstyle1[, $rstyle2]])
		1271
		1272	Similar to C<scr_xor_span>, but xors a rectangle instead. Trailing
		1273	whitespace will additionally be xored with the C<$rstyle2>, which defaults
		1274	to C<RS_RVid | RS_Uline>, which removes reverse video again and underlines
		1275	it instead. Both styles I<MUST NOT> contain font styles.
		1276
		1277	=item $term->scr_bell
		1278
		1279	Ring the bell!
679		1280
680	=item $term->scr_add_lines ($string)	1281	=item $term->scr_add_lines ($string)
681		1282
682	Write the given text string to the screen, as if output by the application	1283	Write the given text string to the screen, as if output by the application
683	running inside the terminal. It may not contain command sequences (escape	1284	running inside the terminal. It may not contain command sequences (escape
…		…
686		1287
687	Normally its not a good idea to use this function, as programs might be	1288	Normally its not a good idea to use this function, as programs might be
688	confused by changes in cursor position or scrolling. Its useful inside a	1289	confused by changes in cursor position or scrolling. Its useful inside a
689	C<on_add_lines> hook, though.	1290	C<on_add_lines> hook, though.
690		1291
		1292	=item $term->scr_change_screen ($screen)
		1293
		1294	Switch to given screen - 0 primary, 1 secondary.
		1295
691	=item $term->cmd_parse ($octets)	1296	=item $term->cmd_parse ($octets)
692		1297
693	Similar to C<scr_add_lines>, but the argument must be in the	1298	Similar to C<scr_add_lines>, but the argument must be in the
694	locale-specific encoding of the terminal and can contain command sequences	1299	locale-specific encoding of the terminal and can contain command sequences
695	(escape codes) that will be interpreted.	1300	(escape codes) that will be interpreted.
…		…
698		1303
699	Write the octets given in C<$data> to the tty (i.e. as program input). To	1304	Write the octets given in C<$data> to the tty (i.e. as program input). To
700	pass characters instead of octets, you should convert your strings first	1305	pass characters instead of octets, you should convert your strings first
701	to the locale-specific encoding using C<< $term->locale_encode >>.	1306	to the locale-specific encoding using C<< $term->locale_encode >>.
702		1307
		1308	=item $old_events = $term->pty_ev_events ([$new_events])
		1309
		1310	Replaces the event mask of the pty watcher by the given event mask. Can
		1311	be used to suppress input and output handling to the pty/tty. See the
		1312	description of C<< urxvt::timer->events >>. Make sure to always restore
		1313	the previous value.
		1314
703	=item $windowid = $term->parent	1315	=item $windowid = $term->parent
704		1316
705	Return the window id of the toplevel window.	1317	Return the window id of the toplevel window.
706		1318
707	=item $windowid = $term->vt	1319	=item $windowid = $term->vt
708		1320
709	Return the window id of the terminal window.	1321	Return the window id of the terminal window.
710		1322
		1323	=item $term->vt_emask_add ($x_event_mask)
		1324
		1325	Adds the specified events to the vt event mask. Useful e.g. when you want
		1326	to receive pointer events all the times:
		1327
		1328	$term->vt_emask_add (urxvt::PointerMotionMask);
		1329
711	=item $window_width = $term->width	1330	=item $window_width = $term->width
712		1331
713	=item $window_height = $term->height	1332	=item $window_height = $term->height
714		1333
715	=item $font_width = $term->fwidth	1334	=item $font_width = $term->fwidth
…		…
728		1347
729	=item $max_scrollback = $term->saveLines	1348	=item $max_scrollback = $term->saveLines
730		1349
731	=item $nrow_plus_saveLines = $term->total_rows	1350	=item $nrow_plus_saveLines = $term->total_rows
732		1351
733	=item $lines_in_scrollback = $term->nsaved	1352	=item $topmost_scrollback_row = $term->top_row
734		1353
735	Return various integers describing terminal characteristics.	1354	Return various integers describing terminal characteristics.
736		1355
		1356	=item $x_display = $term->display_id
		1357
		1358	Return the DISPLAY used by rxvt-unicode.
		1359
		1360	=item $lc_ctype = $term->locale
		1361
		1362	Returns the LC_CTYPE category string used by this rxvt-unicode.
		1363
		1364	=item $env = $term->env
		1365
		1366	Returns a copy of the environment in effect for the terminal as a hashref
		1367	similar to C<\%ENV>.
		1368
		1369	=cut
		1370
		1371	sub env {
		1372	if (my $env = $_[0]->_env) {
		1373	+{ map /^([^=]+)(?:=(.*))?$/s && ($1 => $2), @$env }
		1374	} else {
		1375	+{ %ENV }
		1376	}
		1377	}
		1378
		1379	=item $modifiermask = $term->ModLevel3Mask
		1380
		1381	=item $modifiermask = $term->ModMetaMask
		1382
		1383	=item $modifiermask = $term->ModNumLockMask
		1384
		1385	Return the modifier masks corresponding to the "ISO Level 3 Shift" (often
		1386	AltGr), the meta key (often Alt) and the num lock key, if applicable.
		1387
		1388	=item $screen = $term->current_screen
		1389
		1390	Returns the currently displayed screen (0 primary, 1 secondary).
		1391
		1392	=item $cursor_is_hidden = $term->hidden_cursor
		1393
		1394	Returns wether the cursor is currently hidden or not.
		1395
737	=item $view_start = $term->view_start ([$newvalue])	1396	=item $view_start = $term->view_start ([$newvalue])
738		1397
739	Returns the negative row number of the topmost line. Minimum value is	1398	Returns the row number of the topmost displayed line. Maximum value is
740	C<0>, which displays the normal terminal contents. Larger values scroll	1399	C<0>, which displays the normal terminal contents. Lower values scroll
741	this many lines into the scrollback buffer.	1400	this many lines into the scrollback buffer.
742		1401
743	=item $term->want_refresh	1402	=item $term->want_refresh
744		1403
745	Requests a screen refresh. At the next opportunity, rxvt-unicode will	1404	Requests a screen refresh. At the next opportunity, rxvt-unicode will
…		…
760	line, starting at column C<$start_col> (default C<0>), which is useful	1419	line, starting at column C<$start_col> (default C<0>), which is useful
761	to replace only parts of a line. The font index in the rendition will	1420	to replace only parts of a line. The font index in the rendition will
762	automatically be updated.	1421	automatically be updated.
763		1422
764	C<$text> is in a special encoding: tabs and wide characters that use more	1423	C<$text> is in a special encoding: tabs and wide characters that use more
765	than one cell when displayed are padded with urxvt::NOCHAR characters	1424	than one cell when displayed are padded with C<$urxvt::NOCHAR> (chr 65535)
766	(C<chr 65535>). Characters with combining characters and other characters	1425	characters. Characters with combining characters and other characters that
767	that do not fit into the normal tetx encoding will be replaced with	1426	do not fit into the normal tetx encoding will be replaced with characters
768	characters in the private use area.	1427	in the private use area.
769		1428
770	You have to obey this encoding when changing text. The advantage is	1429	You have to obey this encoding when changing text. The advantage is
771	that C<substr> and similar functions work on screen cells and not on	1430	that C<substr> and similar functions work on screen cells and not on
772	characters.	1431	characters.
773		1432
…		…
824	Return the row number of the first/last row of the line, respectively.	1483	Return the row number of the first/last row of the line, respectively.
825		1484
826	=item $offset = $line->offset_of ($row, $col)	1485	=item $offset = $line->offset_of ($row, $col)
827		1486
828	Returns the character offset of the given row|col pair within the logical	1487	Returns the character offset of the given row|col pair within the logical
829	line.	1488	line. Works for rows outside the line, too, and returns corresponding
		1489	offsets outside the string.
830		1490
831	=item ($row, $col) = $line->coord_of ($offset)	1491	=item ($row, $col) = $line->coord_of ($offset)
832		1492
833	Translates a string offset into terminal coordinates again.	1493	Translates a string offset into terminal coordinates again.
834		1494
835	=back	1495	=back
836		1496
837	=cut	1497	=cut
838		1498
839	sub urxvt::term::line {	1499	sub line {
840	my ($self, $row) = @_;	1500	my ($self, $row) = @_;
841		1501
842	my $maxrow = $self->nrow - 1;	1502	my $maxrow = $self->nrow - 1;
843		1503
844	my ($beg, $end) = ($row, $row);	1504	my ($beg, $end) = ($row, $row);
…		…
908	$offset / $self->{ncol} + $self->{beg},	1568	$offset / $self->{ncol} + $self->{beg},
909	$offset % $self->{ncol}	1569	$offset % $self->{ncol}
910	)	1570	)
911	}	1571	}
912		1572
913	=item ($row, $col) = $line->coord_of ($offset)
914	=item $text = $term->special_encode $string	1573	=item $text = $term->special_encode $string
915		1574
916	Converts a perl string into the special encoding used by rxvt-unicode,	1575	Converts a perl string into the special encoding used by rxvt-unicode,
917	where one character corresponds to one screen cell. See	1576	where one character corresponds to one screen cell. See
918	C<< $term->ROW_t >> for details.	1577	C<< $term->ROW_t >> for details.
…		…
920	=item $string = $term->special_decode $text	1579	=item $string = $term->special_decode $text
921		1580
922	Converts rxvt-unicodes text reprsentation into a perl string. See	1581	Converts rxvt-unicodes text reprsentation into a perl string. See
923	C<< $term->ROW_t >> for details.	1582	C<< $term->ROW_t >> for details.
924		1583
		1584	=item $success = $term->grab_button ($button, $modifiermask)
		1585
		1586	Registers a synchronous button grab. See the XGrabButton manpage.
		1587
		1588	=item $success = $term->grab ($eventtime[, $sync])
		1589
		1590	Calls XGrabPointer and XGrabKeyboard in asynchronous (default) or
		1591	synchronous (C<$sync> is true). Also remembers the grab timestampe.
		1592
		1593	=item $term->allow_events_async
		1594
		1595	Calls XAllowEvents with AsyncBoth for the most recent grab.
		1596
		1597	=item $term->allow_events_sync
		1598
		1599	Calls XAllowEvents with SyncBoth for the most recent grab.
		1600
		1601	=item $term->allow_events_replay
		1602
		1603	Calls XAllowEvents with both ReplayPointer and ReplayKeyboard for the most
		1604	recent grab.
		1605
		1606	=item $term->ungrab
		1607
		1608	Calls XUngrab for the most recent grab. Is called automatically on
		1609	evaluation errors, as it is better to lose the grab in the error case as
		1610	the session.
		1611
		1612	=item $atom = $term->XInternAtom ($atom_name[, $only_if_exists])
		1613
		1614	=item $atom_name = $term->XGetAtomName ($atom)
		1615
		1616	=item @atoms = $term->XListProperties ($window)
		1617
		1618	=item ($type,$format,$octets) = $term->XGetWindowProperty ($window, $property)
		1619
		1620	=item $term->XChangeWindowProperty ($window, $property, $type, $format, $octets)
		1621
		1622	=item $term->XDeleteProperty ($window, $property)
		1623
		1624	=item $window = $term->DefaultRootWindow
		1625
		1626	=item $term->XReparentWindow ($window, $parent, [$x, $y])
		1627
		1628	=item $term->XMapWindow ($window)
		1629
		1630	=item $term->XUnmapWindow ($window)
		1631
		1632	=item $term->XMoveResizeWindow ($window, $x, $y, $width, $height)
		1633
		1634	=item ($x, $y, $child_window) = $term->XTranslateCoordinates ($src, $dst, $x, $y)
		1635
		1636	=item $term->XChangeInput ($window, $add_events[, $del_events])
		1637
		1638	Various X or X-related functions. The C<$term> object only serves as
		1639	the source of the display, otherwise those functions map more-or-less
		1640	directory onto the X functions of the same name.
		1641
925	=back	1642	=back
		1643
		1644	=cut
		1645
		1646	package urxvt::popup;
		1647
		1648	=head2 The C<urxvt::popup> Class
		1649
		1650	=over 4
		1651
		1652	=cut
		1653
		1654	sub add_item {
		1655	my ($self, $item) = @_;
		1656
		1657	$item->{rend}{normal} = "\x1b[0;30;47m" unless exists $item->{rend}{normal};
		1658	$item->{rend}{hover} = "\x1b[0;30;46m" unless exists $item->{rend}{hover};
		1659	$item->{rend}{active} = "\x1b[m" unless exists $item->{rend}{active};
		1660
		1661	$item->{render} ||= sub { $_[0]{text} };
		1662
		1663	push @{ $self->{item} }, $item;
		1664	}
		1665
		1666	=item $popup->add_title ($title)
		1667
		1668	Adds a non-clickable title to the popup.
		1669
		1670	=cut
		1671
		1672	sub add_title {
		1673	my ($self, $title) = @_;
		1674
		1675	$self->add_item ({
		1676	rend => { normal => "\x1b[38;5;11;44m", hover => "\x1b[38;5;11;44m", active => "\x1b[38;5;11;44m" },
		1677	text => $title,
		1678	activate => sub { },
		1679	});
		1680	}
		1681
		1682	=item $popup->add_separator ([$sepchr])
		1683
		1684	Creates a separator, optionally using the character given as C<$sepchr>.
		1685
		1686	=cut
		1687
		1688	sub add_separator {
		1689	my ($self, $sep) = @_;
		1690
		1691	$sep ||= "=";
		1692
		1693	$self->add_item ({
		1694	rend => { normal => "\x1b[0;30;47m", hover => "\x1b[0;30;47m", active => "\x1b[0;30;47m" },
		1695	text => "",
		1696	render => sub { $sep x $self->{term}->ncol },
		1697	activate => sub { },
		1698	});
		1699	}
		1700
		1701	=item $popup->add_button ($text, $cb)
		1702
		1703	Adds a clickable button to the popup. C<$cb> is called whenever it is
		1704	selected.
		1705
		1706	=cut
		1707
		1708	sub add_button {
		1709	my ($self, $text, $cb) = @_;
		1710
		1711	$self->add_item ({ type => "button", text => $text, activate => $cb});
		1712	}
		1713
		1714	=item $popup->add_toggle ($text, $cb, $initial_value)
		1715
		1716	Adds a toggle/checkbox item to the popup. Teh callback gets called
		1717	whenever it gets toggled, with a boolean indicating its value as its first
		1718	argument.
		1719
		1720	=cut
		1721
		1722	sub add_toggle {
		1723	my ($self, $text, $cb, $value) = @_;
		1724
		1725	my $item; $item = {
		1726	type => "button",
		1727	text => " $text",
		1728	value => $value,
		1729	render => sub { ($_[0]{value} ? "* " : " ") . $text },
		1730	activate => sub { $cb->($_[1]{value} = !$_[1]{value}); },
		1731	};
		1732
		1733	$self->add_item ($item);
		1734	}
		1735
		1736	=item $popup->show
		1737
		1738	Displays the popup (which is initially hidden).
		1739
		1740	=cut
		1741
		1742	sub show {
		1743	my ($self) = @_;
		1744
		1745	local $urxvt::popup::self = $self;
		1746
		1747	my $env = $self->{term}->env;
		1748	# we can't hope to reproduce the locale algorithm, so nuke LC_ALL and set LC_CTYPE.
		1749	delete $env->{LC_ALL};
		1750	$env->{LC_CTYPE} = $self->{term}->locale;
		1751
		1752	urxvt::term->new ($env, "popup",
		1753	"--perl-lib" => "", "--perl-ext-common" => "",
		1754	"-pty-fd" => -1, "-sl" => 0,
		1755	"-b" => 1, "-bd" => "grey80", "-bl", "-override-redirect",
		1756	"--transient-for" => $self->{term}->parent,
		1757	"-display" => $self->{term}->display_id,
		1758	"-pe" => "urxvt-popup")
		1759	or die "unable to create popup window\n";
		1760	}
		1761
		1762	sub DESTROY {
		1763	my ($self) = @_;
		1764
		1765	delete $self->{term}{_destroy}{$self};
		1766	$self->{term}->ungrab;
		1767	}
		1768
		1769	=back
		1770
		1771	=cut
		1772
		1773	package urxvt::watcher;
		1774
		1775	@urxvt::timer::ISA = __PACKAGE__;
		1776	@urxvt::iow::ISA = __PACKAGE__;
		1777	@urxvt::pw::ISA = __PACKAGE__;
		1778	@urxvt::iw::ISA = __PACKAGE__;
926		1779
927	=head2 The C<urxvt::timer> Class	1780	=head2 The C<urxvt::timer> Class
928		1781
929	This class implements timer watchers/events. Time is represented as a	1782	This class implements timer watchers/events. Time is represented as a
930	fractional number of seconds since the epoch. Example:	1783	fractional number of seconds since the epoch. Example:
…		…
969		1822
970	=item $timer = $timer->start ($tstamp)	1823	=item $timer = $timer->start ($tstamp)
971		1824
972	Set the event trigger time to C<$tstamp> and start the timer.	1825	Set the event trigger time to C<$tstamp> and start the timer.
973		1826
		1827	=item $timer = $timer->after ($delay)
		1828
		1829	Like C<start>, but sets the expiry timer to c<urxvt::NOW + $delay>.
		1830
974	=item $timer = $timer->stop	1831	=item $timer = $timer->stop
975		1832
976	Stop the timer.	1833	Stop the timer.
977		1834
978	=back	1835	=back
…		…
983		1840
984	$term->{socket} = ...	1841	$term->{socket} = ...
985	$term->{iow} = urxvt::iow	1842	$term->{iow} = urxvt::iow
986	->new	1843	->new
987	->fd (fileno $term->{socket})	1844	->fd (fileno $term->{socket})
988	->events (1) # wait for read data	1845	->events (urxvt::EVENT_READ)
989	->start	1846	->start
990	->cb (sub {	1847	->cb (sub {
991	my ($iow, $revents) = @_;	1848	my ($iow, $revents) = @_;
992	# $revents must be 1 here, no need to check	1849	# $revents must be 1 here, no need to check
993	sysread $term->{socket}, my $buf, 8192	1850	sysread $term->{socket}, my $buf, 8192
…		…
1010		1867
1011	Set the filedescriptor (not handle) to watch.	1868	Set the filedescriptor (not handle) to watch.
1012		1869
1013	=item $iow = $iow->events ($eventmask)	1870	=item $iow = $iow->events ($eventmask)
1014		1871
1015	Set the event mask to watch. Bit #0 (value C<1>) enables watching for read	1872	Set the event mask to watch. The only allowed values are
1016	data, Bit #1 (value C<2>) enables watching for write data.	1873	C<urxvt::EVENT_READ> and C<urxvt::EVENT_WRITE>, which might be ORed
		1874	together, or C<urxvt::EVENT_NONE>.
1017		1875
1018	=item $iow = $iow->start	1876	=item $iow = $iow->start
1019		1877
1020	Start watching for requested events on the given handle.	1878	Start watching for requested events on the given handle.
1021		1879
1022	=item $iow = $iow->stop	1880	=item $iow = $iow->stop
1023		1881
1024	Stop watching for events on the given filehandle.	1882	Stop watching for events on the given filehandle.
		1883
		1884	=back
		1885
		1886	=head2 The C<urxvt::iw> Class
		1887
		1888	This class implements idle watchers, that get called automatically when
		1889	the process is idle. They should return as fast as possible, after doing
		1890	some useful work.
		1891
		1892	=over 4
		1893
		1894	=item $iw = new urxvt::iw
		1895
		1896	Create a new idle watcher object in stopped state.
		1897
		1898	=item $iw = $iw->cb (sub { my ($iw) = @_; ... })
		1899
		1900	Set the callback to be called when the watcher triggers.
		1901
		1902	=item $timer = $timer->start
		1903
		1904	Start the watcher.
		1905
		1906	=item $timer = $timer->stop
		1907
		1908	Stop the watcher.
		1909
		1910	=back
		1911
		1912	=head2 The C<urxvt::pw> Class
		1913
		1914	This class implements process watchers. They create an event whenever a
		1915	process exits, after which they stop automatically.
		1916
		1917	my $pid = fork;
		1918	...
		1919	$term->{pw} = urxvt::pw
		1920	->new
		1921	->start ($pid)
		1922	->cb (sub {
		1923	my ($pw, $exit_status) = @_;
		1924	...
		1925	});
		1926
		1927	=over 4
		1928
		1929	=item $pw = new urxvt::pw
		1930
		1931	Create a new process watcher in stopped state.
		1932
		1933	=item $pw = $pw->cb (sub { my ($pw, $exit_status) = @_; ... })
		1934
		1935	Set the callback to be called when the timer triggers.
		1936
		1937	=item $pw = $timer->start ($pid)
		1938
		1939	Tells the wqtcher to start watching for process C<$pid>.
		1940
		1941	=item $pw = $pw->stop
		1942
		1943	Stop the watcher.
1025		1944
1026	=back	1945	=back
1027		1946
1028	=head1 ENVIRONMENT	1947	=head1 ENVIRONMENT
1029		1948
…		…
1032	This variable controls the verbosity level of the perl extension. Higher	1951	This variable controls the verbosity level of the perl extension. Higher
1033	numbers indicate more verbose output.	1952	numbers indicate more verbose output.
1034		1953
1035	=over 4	1954	=over 4
1036		1955
1037	=item =0 - only fatal messages	1956	=item == 0 - fatal messages
1038		1957
1039	=item =3 - script loading and management	1958	=item >= 3 - script loading and management
1040		1959
1041	=item =10 - all events received	1960	=item >=10 - all called hooks
		1961
		1962	=item >=11 - hook reutrn values
1042		1963
1043	=back	1964	=back
1044		1965
1045	=head1 AUTHOR	1966	=head1 AUTHOR
1046		1967

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