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Comparing rxvt-unicode/src/urxvt.pm (file contents):
Revision 1.47 by root, Sat Jan 7 21:22:02 2006 UTC vs.
Revision 1.122 by root, Sat Jan 21 08:07:38 2006 UTC

…		…
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 @{ $self->{term}{selection_popup_hook} }, sub {
		113	/a/ ? ("a to be" => sub { s/a/b/g }
		114	: ()
		115	};
		116
		117	=item searchable-scrollback<hotkey> (enabled by default)
		118
		119	Adds regex search functionality to the scrollback buffer, triggered
		120	by a hotkey (default: C<M-s>). While in search mode, normal terminal
		121	input/output is suspended and a regex is displayed at the bottom of the
		122	screen.
		123
		124	Inputting characters appends them to the regex and continues incremental
		125	search. C<BackSpace> removes a character from the regex, C<Up> and C<Down>
		126	search upwards/downwards in the scrollback buffer, C<End> jumps to the
		127	bottom. C<Escape> leaves search mode and returns to the point where search
		128	was started, while C<Enter> or C<Return> stay at the current position and
		129	additionally stores the first match in the current line into the primary
		130	selection.
		131
		132	=item selection-autotransform
		133
		134	This selection allows you to do automatic transforms on a selection
		135	whenever a selection is made.
		136
		137	It works by specifying perl snippets (most useful is a single C<s///>
		138	operator) that modify C<$_> as resources:
		139
		140	URxvt.selection-autotransform.0: transform
		141	URxvt.selection-autotransform.1: transform
		142	...
		143
		144	For example, the following will transform selections of the form
		145	C<filename:number>, often seen in compiler messages, into C<vi +$filename
		146	$word>:
		147
		148	URxvt.selection-autotransform.0: s/^([^:[:space:]]+):(\\d+):?$/vi +$2 \\Q$1\\E\\x0d/
		149
		150	And this example matches the same,but replaces it with vi-commands you can
		151	paste directly into your (vi :) editor:
		152
		153	URxvt.selection-autotransform.0: s/^([^:[:space:]]+(\\d+):?$/:e \\Q$1\\E\\x0d:$2\\x0d/
		154
		155	Of course, this can be modified to suit your needs and your editor :)
		156
		157	To expand the example above to typical perl error messages ("XXX at
		158	FILENAME line YYY."), you need a slightly more elaborate solution:
		159
		160	URxvt.selection.pattern-0: ( at .*? line \\d+[,.])
		161	URxvt.selection-autotransform.0: s/^ at (.*?) line (\\d+)[,.]$/:e \\Q$1\E\\x0d:$2\\x0d/
		162
		163	The first line tells the selection code to treat the unchanging part of
		164	every error message as a selection pattern, and the second line transforms
		165	the message into vi commands to load the file.
		166
		167	=item readline
		168
		169	A support package that tries to make editing with readline easier. At the
		170	moment, it reacts to clicking with the left mouse button by trying to
		171	move the text cursor to this position. It does so by generating as many
		172	cursor-left or cursor-right keypresses as required (the this only works
		173	for programs that correctly support wide characters).
		174
		175	To avoid too many false positives, this is only done when:
		176
		177	=over 4
		178
		179	=item - the mouse is on the same (multi-row-) line as the text cursor.
		180
		181	=item - the primary screen is currently being displayed.
		182
		183	=item - the text cursor is visible.
		184
		185	=back
		186
		187	The normal selection mechanism isn't disabled, so quick successive clicks
		188	might interfere with selection creation in harmless ways.
		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 extension files, 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. It is, however, blessed intot he package of the extension script,
129	so for all practical purposes you can treat an extension script as a class.
130		341
131	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
132	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
133	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.
134		345
135	When in doubt, return a false value (preferably C<()>).	346	I<< When in doubt, return a false value (preferably C<()>). >>
136		347
137	=over 4	348	=over 4
138		349
139	=item on_init $term	350	=item on_init $term
140		351
141	Called after a new terminal object has been initialized, but before	352	Called after a new terminal object has been initialized, but before
142	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
143	call or deliver senseless data, as terminal size and other characteristics	354	call or deliver senseless data, as terminal size and other characteristics
144	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
145	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.
146		369
147	=item on_reset $term	370	=item on_reset $term
148		371
149	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
150	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
151	variables.	374	variables.
152		375
153	=item on_start $term	376	=item on_child_start $term, $pid
154		377
155	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.
156	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>.
157		384
158	=item on_sel_make $term, $eventtime	385	=item on_sel_make $term, $eventtime
159		386
160	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
161	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
…		…
175	=item on_sel_extend $term	402	=item on_sel_extend $term
176		403
177	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
178	click) and is either supposed to return false (normal operation), or	405	click) and is either supposed to return false (normal operation), or
179	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
180	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.
181		410
182	See the F<selection> example extension.	411	See the F<selection> example extension.
183		412
184	=item on_view_change $term, $offset	413	=item on_view_change $term, $offset
185		414
…		…
194	than the scroll back buffer or the terminal.	423	than the scroll back buffer or the terminal.
195		424
196	It is called before lines are scrolled out (so rows 0 .. min ($lines - 1,	425	It is called before lines are scrolled out (so rows 0 .. min ($lines - 1,
197	$nrow - 1) represent the lines to be scrolled out). C<$saved> is the total	426	$nrow - 1) represent the lines to be scrolled out). C<$saved> is the total
198	number of lines that will be in the scrollback buffer.	427	number of lines that will be in the scrollback buffer.
199
200	=item on_tty_activity $term *NYI*
201
202	Called whenever the program(s) running in the urxvt window send output.
203		428
204	=item on_osc_seq $term, $string	429	=item on_osc_seq $term, $string
205		430
206	Called whenever the B<ESC ] 777 ; string ST> command sequence (OSC =	431	Called whenever the B<ESC ] 777 ; string ST> command sequence (OSC =
207	operating system command) is processed. Cursor position and other state	432	operating system command) is processed. Cursor position and other state
…		…
220	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
221	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
222	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
223	output.	448	output.
224		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
225	=item on_line_update $term, $row	455	=item on_line_update $term, $row
226		456
227	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
228	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
229	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,
…		…
251		481
252	Called whenever the user presses a key combination that has a	482	Called whenever the user presses a key combination that has a
253	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>
254	resource in the @@RXVT_NAME@@(1) manpage).	484	resource in the @@RXVT_NAME@@(1) manpage).
255		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
256	=item on_focus_in $term	492	=item on_focus_in $term
257		493
258	Called whenever the window gets the keyboard focus, before rxvt-unicode	494	Called whenever the window gets the keyboard focus, before rxvt-unicode
259	does focus in processing.	495	does focus in processing.
260		496
261	=item on_focus_out $term	497	=item on_focus_out $term
262		498
263	Called wheneever the window loses keyboard focus, before rxvt-unicode does	499	Called wheneever the window loses keyboard focus, before rxvt-unicode does
264	focus out processing.	500	focus out processing.
265		501
		502	=item on_configure_notify $term, $event
		503
		504	=item on_property_notify $term, $event
		505
266	=item on_key_press $term, $event, $octets	506	=item on_key_press $term, $event, $keysym, $octets
267		507
268	=item on_key_release $term, $event	508	=item on_key_release $term, $event, $keysym
269		509
270	=item on_button_press $term, $event	510	=item on_button_press $term, $event
271		511
272	=item on_button_release $term, $event	512	=item on_button_release $term, $event
273		513
…		…
279		519
280	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
281	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.
282		522
283	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
284	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
285	and column under the mouse cursor.	525	(real, not screen-based) row and column under the mouse cursor.
286		526
287	C<on_key_press> additionally receives the string rxvt-unicode would	527	C<on_key_press> additionally receives the string rxvt-unicode would
288	output, if any, in locale-specific encoding.	528	output, if any, in locale-specific encoding.
289		529
290	subwindow.	530	subwindow.
291		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
292	=back	541	=back
293		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 0xfffe;
		567
294	=head2 Variables in the C<urxvt> Package	568	=head2 Variables in the C<urxvt> Package
295		569
296	=over 4	570	=over 4
		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>.
297		584
298	=item $urxvt::TERM	585	=item $urxvt::TERM
299		586
300	The current terminal. This variable stores the current C<urxvt::term>	587	The current terminal. This variable stores the current C<urxvt::term>
301	object, whenever a callback/hook is executing.	588	object, whenever a callback/hook is executing.
302		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>.
		605
303	=back	606	=back
304		607
305	=head2 Functions in the C<urxvt> Package	608	=head2 Functions in the C<urxvt> Package
306		609
307	=over 4	610	=over 4
308
309	=item $term = new urxvt [arg...]
310
311	Creates a new terminal, very similar as if you had started it with
312	C<system $binfile, arg...>. Croaks (and probably outputs an error message)
313	if the new instance couldn't be created. Returns C<undef> if the new
314	instance didn't initialise perl, and the terminal object otherwise. The
315	C<init> and C<start> hooks will be called during the call.
316		611
317	=item urxvt::fatal $errormessage	612	=item urxvt::fatal $errormessage
318		613
319	Fatally aborts execution with the given error message. Avoid at all	614	Fatally aborts execution with the given error message. Avoid at all
320	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
…		…
327	that calls this function.	622	that calls this function.
328		623
329	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
330	correct place, e.g. on stderr of the connecting urxvtc client.	625	correct place, e.g. on stderr of the connecting urxvtc client.
331		626
		627	Messages have a size limit of 1023 bytes currently.
		628
332	=item $time = urxvt::NOW	629	=item $time = urxvt::NOW
333		630
334	Returns the "current time" (as per the event loop).	631	Returns the "current time" (as per the event loop).
335		632
336	=item urxvt::CurrentTime	633	=item urxvt::CurrentTime
337		634
338	=item urxvt::ShiftMask, LockMask, ControlMask, Mod1Mask, Mod2Mask,	635	=item urxvt::ShiftMask, LockMask, ControlMask, Mod1Mask, Mod2Mask,
339	Mod3Mask, Mod4Mask, Mod5Mask, Button1Mask, Button2Mask, Button3Mask,	636	Mod3Mask, Mod4Mask, Mod5Mask, Button1Mask, Button2Mask, Button3Mask,
340	Button4Mask, Button5Mask, AnyModifier	637	Button4Mask, Button5Mask, AnyModifier
341		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
342	Various constants for use in X events.	655	Various constants for use in X calls and event processing.
343		656
344	=back	657	=back
345		658
346	=head2 RENDITION	659	=head2 RENDITION
347		660
…		…
374		687
375	=item $background = urxvt::GET_BASEBG $rend	688	=item $background = urxvt::GET_BASEBG $rend
376		689
377	Return the foreground/background colour index, respectively.	690	Return the foreground/background colour index, respectively.
378		691
379	=item $rend = urxvt::SET_FGCOLOR ($rend, $new_colour)	692	=item $rend = urxvt::SET_FGCOLOR $rend, $new_colour
380		693
381	=item $rend = urxvt::SET_BGCOLOR ($rend, $new_colour)	694	=item $rend = urxvt::SET_BGCOLOR $rend, $new_colour
382		695
383	Replace the foreground/background colour in the rendition mask with the	696	Replace the foreground/background colour in the rendition mask with the
384	specified one.	697	specified one.
385		698
386	=item $value = urxvt::GET_CUSTOM ($rend)	699	=item $value = urxvt::GET_CUSTOM $rend
387		700
388	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
389	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
390	zero.	703	zero.
391		704
392	=item $rend = urxvt::SET_CUSTOM ($rend, $new_value)	705	=item $rend = urxvt::SET_CUSTOM $rend, $new_value
393		706
394	Change the custom value.	707	Change the custom value.
395		708
396	=back	709	=back
397		710
398	=cut	711	=cut
399		712
400	package urxvt;
401
402	use strict;
403	use Scalar::Util ();
404
405	our $TERM;
406	our @HOOKNAME;
407	our $LIBDIR;
408
409	BEGIN {	713	BEGIN {
410	urxvt->bootstrap;
411
412	# overwrite perl's warn	714	# overwrite perl's warn
413	*CORE::GLOBAL::warn = sub {	715	*CORE::GLOBAL::warn = sub {
414	my $msg = join "", @_;	716	my $msg = join "", @_;
415	$msg .= "\n"	717	$msg .= "\n"
416	unless $msg =~ /\n$/;	718	unless $msg =~ /\n$/;
417	urxvt::warn ($msg);	719	urxvt::warn ($msg);
418	};	720	};
419	}	721	}
420		722
421	my @hook_count;
422	my $verbosity = $ENV{URXVT_PERL_VERBOSITY};	723	my $verbosity = $ENV{URXVT_PERL_VERBOSITY};
423		724
424	sub verbose {	725	sub verbose {
425	my ($level, $msg) = @_;	726	my ($level, $msg) = @_;
426	warn "$msg\n" if $level <= $verbosity;	727	warn "$msg\n" if $level <= $verbosity;
427	}	728	}
428		729
429	# find on_xxx subs in the package and register them
430	# as hooks
431	sub register_package($) {
432	my ($pkg) = @_;
433
434	for my $htype (0.. $#HOOKNAME) {
435	my $name = $HOOKNAME[$htype];
436
437	my $ref = $pkg->can ("on_" . lc $name)
438	or next;
439
440	$TERM->{_hook}[$htype]{$pkg} = $ref;
441	$hook_count[$htype]++
442	or set_should_invoke $htype, 1;
443	}
444	}
445
446	my $extension_pkg = "extension0000";
447	my %extension_pkg;	730	my %extension_pkg;
448		731
449	# load a single script into its own package, once only	732	# load a single script into its own package, once only
450	sub extension_package($) {	733	sub extension_package($) {
451	my ($path) = @_;	734	my ($path) = @_;
452		735
453	$extension_pkg{$path} ||= do {	736	$extension_pkg{$path} ||= do {
454	my $pkg = "urxvt::" . ($extension_pkg++);	737	$path =~ /([^\/\\]+)$/;
		738	my $pkg = $1;
		739	$pkg =~ s/[^[:word:]]/_/g;
		740	$pkg = "urxvt::ext::$pkg";
455		741
456	verbose 3, "loading extension '$path' into package '$pkg'";	742	verbose 3, "loading extension '$path' into package '$pkg'";
457		743
458	open my $fh, "<:raw", $path	744	open my $fh, "<:raw", $path
459	or die "$path: $!";	745	or die "$path: $!";
460		746
		747	my $source =
461	my $source = "package $pkg; use strict; use utf8;\n"	748	"package $pkg; use strict; use utf8;\n"
462	. "use base urxvt::term::proxy::;\n"
463	. "#line 1 \"$path\"\n{\n"	749	. "#line 1 \"$path\"\n{\n"
464	. (do { local $/; <$fh> })	750	. (do { local $/; <$fh> })
465	. "\n};\n1";	751	. "\n};\n1";
466		752
		753	eval $source
467	eval $source or die "$path: $@";	754	or die "$path: $@";
468		755
469	$pkg	756	$pkg
470	}	757	}
471	}	758	}
472		759
…		…
477	local $TERM = shift;	764	local $TERM = shift;
478	my $htype = shift;	765	my $htype = shift;
479		766
480	if ($htype == 0) { # INIT	767	if ($htype == 0) { # INIT
481	my @dirs = ((split /:/, $TERM->resource ("perl_lib")), "$LIBDIR/perl");	768	my @dirs = ((split /:/, $TERM->resource ("perl_lib")), "$LIBDIR/perl");
		769
		770	my %ext_arg;
482		771
		772	{
		773	my @init = @TERM_INIT;
		774	@TERM_INIT = ();
		775	$_->($TERM) for @init;
		776	my @pkg = @TERM_EXT;
		777	@TERM_EXT = ();
		778	$TERM->register_package ($_) for @pkg;
		779	}
		780
483	for my $ext (map { split /,/, $TERM->resource ("perl_ext_$_") } 1, 2) {	781	for (grep $_, map { split /,/, $TERM->resource ("perl_ext_$_") } 1, 2) {
		782	if ($_ eq "default") {
		783	$ext_arg{$_} ||= [] for qw(selection option-popup selection-popup searchable-scrollback);
		784	} elsif (/^-(.*)$/) {
		785	delete $ext_arg{$1};
		786	} elsif (/^([^<]+)<(.*)>$/) {
		787	push @{ $ext_arg{$1} }, $2;
		788	} else {
		789	$ext_arg{$_} ||= [];
		790	}
		791	}
		792
		793	while (my ($ext, $argv) = each %ext_arg) {
484	my @files = grep -f $_, map "$_/$ext", @dirs;	794	my @files = grep -f $_, map "$_/$ext", @dirs;
485		795
486	if (@files) {	796	if (@files) {
487	register_package extension_package $files[0];	797	$TERM->register_package (extension_package $files[0], $argv);
488	} else {	798	} else {
489	warn "perl extension '$ext' not found in perl library search path\n";	799	warn "perl extension '$ext' not found in perl library search path\n";
490	}	800	}
491	}	801	}
		802
		803	eval "#line 1 \"--perl-eval resource/argument\"\n" . $TERM->resource ("perl_eval");
		804	warn $@ if $@;
492	}	805	}
493		806
494	$retval = undef;	807	$retval = undef;
495		808
496	if (my $cb = $TERM->{_hook}[$htype]) {	809	if (my $cb = $TERM->{_hook}[$htype]) {
…		…
498	if $verbosity >= 10;	811	if $verbosity >= 10;
499		812
500	keys %$cb;	813	keys %$cb;
501		814
502	while (my ($pkg, $cb) = each %$cb) {	815	while (my ($pkg, $cb) = each %$cb) {
503	eval {	816	my $retval_ = eval { $cb->($TERM->{_pkg}{$pkg}, @_) };
504	$retval = $cb->(	817	$retval ||= $retval_;
505	$TERM->{_pkg}{$pkg} ||= do {
506	my $proxy = bless { }, $pkg;
507	Scalar::Util::weaken ($proxy->{term} = $TERM);
508	$proxy
509	},
510	@_,
511	) and last;
512	};
513	warn $@ if $@;#d#
514	}
515	}
516		818
517	if ($htype == 1) { # DESTROY	819	if ($@) {
518	# remove hooks if unused	820	$TERM->ungrab; # better to lose the grab than the session
519	if (my $hook = $TERM->{_hook}) {	821	warn $@;
520	for my $htype (0..$#$hook) {
521	$hook_count[$htype] -= scalar keys %{ $hook->[$htype] || {} }
522	or set_should_invoke $htype, 0;
523	}	822	}
524	}	823	}
525		824
		825	verbose 11, "$HOOKNAME[$htype] returning <$retval>"
		826	if $verbosity >= 11;
		827	}
		828
		829	if ($htype == 1) { # DESTROY
526	# clear package objects	830	# clear package objects
527	%$_ = () for values %{ $TERM->{_pkg} };	831	%$_ = () for values %{ $TERM->{_pkg} };
528		832
529	# clear package	833	# clear package
530	%$TERM = ();	834	%$TERM = ();
531	}	835	}
532		836
533	$retval	837	$retval
534	}	838	}
535		839
536	sub urxvt::term::proxy::AUTOLOAD {	840	# urxvt::term::extension
537	$urxvt::term::proxy::AUTOLOAD =~ /:([^:]+)$/	841
		842	package urxvt::term::extension;
		843
		844	sub enable {
		845	my ($self, %hook) = @_;
		846	my $pkg = $self->{_pkg};
		847
		848	while (my ($name, $cb) = each %hook) {
		849	my $htype = $HOOKTYPE{uc $name};
		850	defined $htype
		851	or Carp::croak "unsupported hook type '$name'";
		852
		853	$self->set_should_invoke ($htype, +1)
		854	unless exists $self->{term}{_hook}[$htype]{$pkg};
		855
		856	$self->{term}{_hook}[$htype]{$pkg} = $cb;
		857	}
		858	}
		859
		860	sub disable {
		861	my ($self, @hook) = @_;
		862	my $pkg = $self->{_pkg};
		863
		864	for my $name (@hook) {
		865	my $htype = $HOOKTYPE{uc $name};
		866	defined $htype
		867	or Carp::croak "unsupported hook type '$name'";
		868
		869	$self->set_should_invoke ($htype, -1)
		870	if delete $self->{term}{_hook}[$htype]{$pkg};
		871	}
		872	}
		873
		874	our $AUTOLOAD;
		875
		876	sub AUTOLOAD {
		877	$AUTOLOAD =~ /:([^:]+)$/
538	or die "FATAL: \$AUTOLOAD '$urxvt::term::proxy::AUTOLOAD' unparsable";	878	or die "FATAL: \$AUTOLOAD '$AUTOLOAD' unparsable";
539		879
540	eval qq{	880	eval qq{
541	sub $urxvt::term::proxy::AUTOLOAD {	881	sub $AUTOLOAD {
542	my \$proxy = shift;	882	my \$proxy = shift;
543	\$proxy->{term}->$1 (\@_)	883	\$proxy->{term}->$1 (\@_)
544	}	884	}
545	1	885	1
546	} or die "FATAL: unable to compile method forwarder: $@";	886	} or die "FATAL: unable to compile method forwarder: $@";
547		887
548	goto &$urxvt::term::proxy::AUTOLOAD;	888	goto &$AUTOLOAD;
549	}	889	}
		890
		891	sub DESTROY {
		892	# nop
		893	}
		894
		895	# urxvt::destroy_hook
550		896
551	sub urxvt::destroy_hook::DESTROY {	897	sub urxvt::destroy_hook::DESTROY {
552	${$_[0]}->();	898	${$_[0]}->();
553	}	899	}
554		900
555	sub urxvt::destroy_hook(&) {	901	sub urxvt::destroy_hook(&) {
556	bless \shift, urxvt::destroy_hook::	902	bless \shift, urxvt::destroy_hook::
557	}	903	}
558		904
		905	package urxvt::anyevent;
		906
		907	=head2 The C<urxvt::anyevent> Class
		908
		909	The sole purpose of this class is to deliver an interface to the
		910	C<AnyEvent> module - any module using it will work inside urxvt without
		911	further programming. The only exception is that you cannot wait on
		912	condition variables, but non-blocking condvar use is ok. What this means
		913	is that you cannot use blocking APIs, but the non-blocking variant should
		914	work.
		915
		916	=cut
		917
		918	our $VERSION = 1;
		919
		920	$INC{"urxvt/anyevent.pm"} = 1; # mark us as there
		921	push @AnyEvent::REGISTRY, [urxvt => urxvt::anyevent::];
		922
		923	sub timer {
		924	my ($class, %arg) = @_;
		925
		926	my $cb = $arg{cb};
		927
		928	urxvt::timer
		929	->new
		930	->start (urxvt::NOW + $arg{after})
		931	->cb (sub {
		932	$_[0]->stop; # need to cancel manually
		933	$cb->();
		934	})
		935	}
		936
		937	sub io {
		938	my ($class, %arg) = @_;
		939
		940	my $cb = $arg{cb};
		941
		942	bless [$arg{fh}, urxvt::iow
		943	->new
		944	->fd (fileno $arg{fh})
		945	->events (($arg{poll} =~ /r/ ? 1 : 0)
		946	| ($arg{poll} =~ /w/ ? 2 : 0))
		947	->start
		948	->cb (sub {
		949	$cb->(($_[1] & 1 ? 'r' : '')
		950	. ($_[1] & 2 ? 'w' : ''));
		951	})],
		952	urxvt::anyevent::
		953	}
		954
		955	sub DESTROY {
		956	$_[0][1]->stop;
		957	}
		958
		959	sub condvar {
		960	bless \my $flag, urxvt::anyevent::condvar::
		961	}
		962
		963	sub urxvt::anyevent::condvar::broadcast {
		964	${$_[0]}++;
		965	}
		966
		967	sub urxvt::anyevent::condvar::wait {
		968	unless (${$_[0]}) {
		969	Carp::croak "AnyEvent->condvar blocking wait unsupported in urxvt, use a non-blocking API";
		970	}
		971	}
		972
		973	package urxvt::term;
		974
559	=head2 The C<urxvt::term> Class	975	=head2 The C<urxvt::term> Class
560		976
561	=over 4	977	=over 4
562		978
		979	=cut
		980
		981	# find on_xxx subs in the package and register them
		982	# as hooks
		983	sub register_package {
		984	my ($self, $pkg, $argv) = @_;
		985
		986	no strict 'refs';
		987
		988	urxvt::verbose 6, "register package $pkg to $self";
		989
		990	@{"$pkg\::ISA"} = urxvt::term::extension::;
		991
		992	my $proxy = bless {
		993	_pkg => $pkg,
		994	argv => $argv,
		995	}, $pkg;
		996	Scalar::Util::weaken ($proxy->{term} = $self);
		997
		998	$self->{_pkg}{$pkg} = $proxy;
		999
		1000	for my $name (@HOOKNAME) {
		1001	if (my $ref = $pkg->can ("on_" . lc $name)) {
		1002	$proxy->enable ($name => $ref);
		1003	}
		1004	}
		1005	}
		1006
		1007	=item $term = new urxvt::term $envhashref, $rxvtname, [arg...]
		1008
		1009	Creates a new terminal, very similar as if you had started it with system
		1010	C<$rxvtname, arg...>. C<$envhashref> must be a reference to a C<%ENV>-like
		1011	hash which defines the environment of the new terminal.
		1012
		1013	Croaks (and probably outputs an error message) if the new instance
		1014	couldn't be created. Returns C<undef> if the new instance didn't
		1015	initialise perl, and the terminal object otherwise. The C<init> and
		1016	C<start> hooks will be called during this call.
		1017
		1018	=cut
		1019
		1020	sub new {
		1021	my ($class, $env, @args) = @_;
		1022
		1023	_new ([ map "$_=$env->{$_}", keys %$env ], @args);
		1024	}
		1025
563	=item $term->destroy	1026	=item $term->destroy
564		1027
565	Destroy the terminal object (close the window, free resources etc.).	1028	Destroy the terminal object (close the window, free resources
		1029	etc.). Please note that @@RXVT_NAME@@ will not exit as long as any event
		1030	watchers (timers, io watchers) are still active.
		1031
		1032	=item $term->exec_async ($cmd[, @args])
		1033
		1034	Works like the combination of the C<fork>/C<exec> builtins, which executes
		1035	("starts") programs in the background. This function takes care of setting
		1036	the user environment before exec'ing the command (e.g. C<PATH>) and should
		1037	be preferred over explicit calls to C<exec> or C<system>.
		1038
		1039	Returns the pid of the subprocess or C<undef> on error.
		1040
		1041	=cut
		1042
		1043	sub exec_async {
		1044	my $self = shift;
		1045
		1046	my $pid = fork;
		1047
		1048	return $pid
		1049	if !defined $pid or $pid;
		1050
		1051	%ENV = %{ $self->env };
		1052
		1053	exec @_;
		1054	urxvt::_exit 255;
		1055	}
		1056
		1057	=item $isset = $term->option ($optval[, $set])
		1058
		1059	Returns true if the option specified by C<$optval> is enabled, and
		1060	optionally change it. All option values are stored by name in the hash
		1061	C<%urxvt::OPTION>. Options not enabled in this binary are not in the hash.
		1062
		1063	Here is a a likely non-exhaustive list of option names, please see the
		1064	source file F</src/optinc.h> to see the actual list:
		1065
		1066	borderLess console cursorBlink cursorUnderline hold iconic insecure
		1067	intensityStyles jumpScroll loginShell mapAlert meta8 mouseWheelScrollPage
		1068	override-redirect pastableTabs pointerBlank reverseVideo scrollBar
		1069	scrollBar_floating scrollBar_right scrollTtyKeypress scrollTtyOutput
		1070	scrollWithBuffer secondaryScreen secondaryScroll skipBuiltinGlyphs
		1071	transparent tripleclickwords utmpInhibit visualBell
566		1072
567	=item $value = $term->resource ($name[, $newval])	1073	=item $value = $term->resource ($name[, $newval])
568		1074
569	Returns the current resource value associated with a given name and	1075	Returns the current resource value associated with a given name and
570	optionally sets a new value. Setting values is most useful in the C<init>	1076	optionally sets a new value. Setting values is most useful in the C<init>
…		…
580		1086
581	Please note that resource strings will currently only be freed when the	1087	Please note that resource strings will currently only be freed when the
582	terminal is destroyed, so changing options frequently will eat memory.	1088	terminal is destroyed, so changing options frequently will eat memory.
583		1089
584	Here is a a likely non-exhaustive list of resource names, not all of which	1090	Here is a a likely non-exhaustive list of resource names, not all of which
585	are supported in every build, please see the source to see the actual	1091	are supported in every build, please see the source file F</src/rsinc.h>
586	list:	1092	to see the actual list:
587		1093
588	answerbackstring backgroundPixmap backspace_key boldFont boldItalicFont	1094	answerbackstring backgroundPixmap backspace_key boldFont boldItalicFont
589	borderLess color cursorBlink cursorUnderline cutchars delete_key	1095	borderLess color cursorBlink cursorUnderline cutchars delete_key
590	display_name embed ext_bwidth fade font geometry hold iconName	1096	display_name embed ext_bwidth fade font geometry hold iconName
591	imFont imLocale inputMethod insecure int_bwidth intensityStyles	1097	imFont imLocale inputMethod insecure int_bwidth intensityStyles
592	italicFont jumpScroll lineSpace loginShell mapAlert menu meta8 modifier	1098	italicFont jumpScroll lineSpace loginShell mapAlert meta8 modifier
593	mouseWheelScrollPage name pastableTabs path perl_eval perl_ext_1 perl_ext_2	1099	mouseWheelScrollPage name override_redirect pastableTabs path perl_eval
594	perl_lib pointerBlank pointerBlankDelay preeditType print_pipe pty_fd	1100	perl_ext_1 perl_ext_2 perl_lib pointerBlank pointerBlankDelay
595	reverseVideo saveLines scrollBar scrollBar_align scrollBar_floating	1101	preeditType print_pipe pty_fd reverseVideo saveLines scrollBar
596	scrollBar_right scrollBar_thickness scrollTtyKeypress scrollTtyOutput	1102	scrollBar_align scrollBar_floating scrollBar_right scrollBar_thickness
597	scrollWithBuffer scrollstyle secondaryScreen secondaryScroll selectstyle	1103	scrollTtyKeypress scrollTtyOutput scrollWithBuffer scrollstyle
598	shade term_name title transparent transparent_all tripleclickwords	1104	secondaryScreen secondaryScroll selectstyle shade term_name title
599	utmpInhibit visualBell	1105	transient_for transparent transparent_all tripleclickwords utmpInhibit
		1106	visualBell
600		1107
601	=cut	1108	=cut
602		1109
603	sub urxvt::term::resource($$;$) {	1110	sub resource($$;$) {
604	my ($self, $name) = (shift, shift);	1111	my ($self, $name) = (shift, shift);
605	unshift @_, $self, $name, ($name =~ s/\s*\+\s*(\d+)$// ? $1 : 0);	1112	unshift @_, $self, $name, ($name =~ s/\s*\+\s*(\d+)$// ? $1 : 0);
606	&urxvt::term::_resource	1113	&urxvt::term::_resource
607	}	1114	}
608		1115
		1116	=item $value = $term->x_resource ($pattern)
		1117
		1118	Returns the X-Resource for the given pattern, excluding the program or
		1119	class name, i.e. C<< $term->x_resource ("boldFont") >> should return the
		1120	same value as used by this instance of rxvt-unicode. Returns C<undef> if no
		1121	resource with that pattern exists.
		1122
		1123	This method should only be called during the C<on_start> hook, as there is
		1124	only one resource database per display, and later invocations might return
		1125	the wrong resources.
		1126
		1127	=item $success = $term->parse_keysym ($keysym_spec, $command_string)
		1128
		1129	Adds a keymap translation exactly as specified via a resource. See the
		1130	C<keysym> resource in the @@RXVT_NAME@@(1) manpage.
		1131
609	=item $rend = $term->rstyle ([$new_rstyle])	1132	=item $rend = $term->rstyle ([$new_rstyle])
610		1133
611	Return and optionally change the current rendition. Text that is output by	1134	Return and optionally change the current rendition. Text that is output by
612	the terminal application will use this style.	1135	the terminal application will use this style.
613		1136
…		…
623	=item ($row, $col) = $term->selection_end ([$row, $col])	1146	=item ($row, $col) = $term->selection_end ([$row, $col])
624		1147
625	Return the current values of the selection mark, begin or end positions,	1148	Return the current values of the selection mark, begin or end positions,
626	and optionally set them to new values.	1149	and optionally set them to new values.
627		1150
		1151	=item $term->selection_make ($eventtime[, $rectangular])
		1152
		1153	Tries to make a selection as set by C<selection_beg> and
		1154	C<selection_end>. If C<$rectangular> is true (default: false), a
		1155	rectangular selection will be made. This is the prefered function to make
		1156	a selection.
		1157
628	=item $success = $term->selection_grab ($eventtime)	1158	=item $success = $term->selection_grab ($eventtime)
629		1159
630	Try to request the primary selection from the server (for example, as set	1160	Try to request the primary selection text from the server (for example, as
631	by the next method).	1161	set by the next method). No visual feedback will be given. This function
		1162	is mostly useful from within C<on_sel_grab> hooks.
632		1163
633	=item $oldtext = $term->selection ([$newtext])	1164	=item $oldtext = $term->selection ([$newtext])
634		1165
635	Return the current selection text and optionally replace it by C<$newtext>.	1166	Return the current selection text and optionally replace it by C<$newtext>.
636		1167
637	#=item $term->overlay ($x, $y, $text)	1168	=item $term->overlay_simple ($x, $y, $text)
638	#	1169
639	#Create a simple multi-line overlay box. See the next method for details.	1170	Create a simple multi-line overlay box. See the next method for details.
640	#	1171
641	#=cut	1172	=cut
642	#	1173
643	#sub urxvt::term::scr_overlay {	1174	sub overlay_simple {
644	# my ($self, $x, $y, $text) = @_;	1175	my ($self, $x, $y, $text) = @_;
645	#	1176
646	# my @lines = split /\n/, $text;	1177	my @lines = split /\n/, $text;
647	#	1178
648	# my $w = 0;	1179	my $w = List::Util::max map $self->strwidth ($_), @lines;
649	# for (map $self->strwidth ($_), @lines) {	1180
650	# $w = $_ if $w < $_;
651	# }
652	#
653	# $self->scr_overlay_new ($x, $y, $w, scalar @lines);	1181	my $overlay = $self->overlay ($x, $y, $w, scalar @lines);
654	# $self->scr_overlay_set (0, $_, $lines[$_]) for 0.. $#lines;	1182	$overlay->set (0, $_, $lines[$_]) for 0.. $#lines;
655	#}	1183
		1184	$overlay
		1185	}
656		1186
657	=item $term->overlay ($x, $y, $width, $height[, $rstyle[, $border]])	1187	=item $term->overlay ($x, $y, $width, $height[, $rstyle[, $border]])
658		1188
659	Create a new (empty) overlay at the given position with the given	1189	Create a new (empty) overlay at the given position with the given
660	width/height. C<$rstyle> defines the initial rendition style	1190	width/height. C<$rstyle> defines the initial rendition style
…		…
695	C<$event> I<must> be the event causing the menu to pop up (a button event,	1225	C<$event> I<must> be the event causing the menu to pop up (a button event,
696	currently).	1226	currently).
697		1227
698	=cut	1228	=cut
699		1229
700	sub urxvt::term::popup {	1230	sub popup {
701	my ($self, $event) = @_;	1231	my ($self, $event) = @_;
702		1232
703	$self->grab ($event->{time}, 1)	1233	$self->grab ($event->{time}, 1)
704	or return;	1234	or return;
705		1235
…		…
727		1257
728	=item $string = $term->locale_decode ($octets)	1258	=item $string = $term->locale_decode ($octets)
729		1259
730	Convert the given locale-encoded octets into a perl string.	1260	Convert the given locale-encoded octets into a perl string.
731		1261
		1262	=item $term->scr_xor_span ($beg_row, $beg_col, $end_row, $end_col[, $rstyle])
		1263
		1264	XORs the rendition values in the given span with the provided value
		1265	(default: C<RS_RVid>), which I<MUST NOT> contain font styles. Useful in
		1266	refresh hooks to provide effects similar to the selection.
		1267
		1268	=item $term->scr_xor_rect ($beg_row, $beg_col, $end_row, $end_col[, $rstyle1[, $rstyle2]])
		1269
		1270	Similar to C<scr_xor_span>, but xors a rectangle instead. Trailing
		1271	whitespace will additionally be xored with the C<$rstyle2>, which defaults
		1272	to C<RS_RVid | RS_Uline>, which removes reverse video again and underlines
		1273	it instead. Both styles I<MUST NOT> contain font styles.
		1274
		1275	=item $term->scr_bell
		1276
		1277	Ring the bell!
		1278
732	=item $term->scr_add_lines ($string)	1279	=item $term->scr_add_lines ($string)
733		1280
734	Write the given text string to the screen, as if output by the application	1281	Write the given text string to the screen, as if output by the application
735	running inside the terminal. It may not contain command sequences (escape	1282	running inside the terminal. It may not contain command sequences (escape
736	codes), but is free to use line feeds, carriage returns and tabs. The	1283	codes), but is free to use line feeds, carriage returns and tabs. The
…		…
738		1285
739	Normally its not a good idea to use this function, as programs might be	1286	Normally its not a good idea to use this function, as programs might be
740	confused by changes in cursor position or scrolling. Its useful inside a	1287	confused by changes in cursor position or scrolling. Its useful inside a
741	C<on_add_lines> hook, though.	1288	C<on_add_lines> hook, though.
742		1289
		1290	=item $term->scr_change_screen ($screen)
		1291
		1292	Switch to given screen - 0 primary, 1 secondary.
		1293
743	=item $term->cmd_parse ($octets)	1294	=item $term->cmd_parse ($octets)
744		1295
745	Similar to C<scr_add_lines>, but the argument must be in the	1296	Similar to C<scr_add_lines>, but the argument must be in the
746	locale-specific encoding of the terminal and can contain command sequences	1297	locale-specific encoding of the terminal and can contain command sequences
747	(escape codes) that will be interpreted.	1298	(escape codes) that will be interpreted.
…		…
750		1301
751	Write the octets given in C<$data> to the tty (i.e. as program input). To	1302	Write the octets given in C<$data> to the tty (i.e. as program input). To
752	pass characters instead of octets, you should convert your strings first	1303	pass characters instead of octets, you should convert your strings first
753	to the locale-specific encoding using C<< $term->locale_encode >>.	1304	to the locale-specific encoding using C<< $term->locale_encode >>.
754		1305
		1306	=item $old_events = $term->pty_ev_events ([$new_events])
		1307
		1308	Replaces the event mask of the pty watcher by the given event mask. Can
		1309	be used to suppress input and output handling to the pty/tty. See the
		1310	description of C<< urxvt::timer->events >>. Make sure to always restore
		1311	the previous value.
		1312
755	=item $windowid = $term->parent	1313	=item $windowid = $term->parent
756		1314
757	Return the window id of the toplevel window.	1315	Return the window id of the toplevel window.
758		1316
759	=item $windowid = $term->vt	1317	=item $windowid = $term->vt
760		1318
761	Return the window id of the terminal window.	1319	Return the window id of the terminal window.
762		1320
		1321	=item $term->vt_emask_add ($x_event_mask)
		1322
		1323	Adds the specified events to the vt event mask. Useful e.g. when you want
		1324	to receive pointer events all the times:
		1325
		1326	$term->vt_emask_add (urxvt::PointerMotionMask);
		1327
763	=item $window_width = $term->width	1328	=item $window_width = $term->width
764		1329
765	=item $window_height = $term->height	1330	=item $window_height = $term->height
766		1331
767	=item $font_width = $term->fwidth	1332	=item $font_width = $term->fwidth
…		…
780		1345
781	=item $max_scrollback = $term->saveLines	1346	=item $max_scrollback = $term->saveLines
782		1347
783	=item $nrow_plus_saveLines = $term->total_rows	1348	=item $nrow_plus_saveLines = $term->total_rows
784		1349
785	=item $lines_in_scrollback = $term->nsaved	1350	=item $topmost_scrollback_row = $term->top_row
786		1351
787	Return various integers describing terminal characteristics.	1352	Return various integers describing terminal characteristics.
		1353
		1354	=item $x_display = $term->display_id
		1355
		1356	Return the DISPLAY used by rxvt-unicode.
		1357
		1358	=item $lc_ctype = $term->locale
		1359
		1360	Returns the LC_CTYPE category string used by this rxvt-unicode.
		1361
		1362	=item $env = $term->env
		1363
		1364	Returns a copy of the environment in effect for the terminal as a hashref
		1365	similar to C<\%ENV>.
		1366
		1367	=cut
		1368
		1369	sub env {
		1370	if (my $env = $_[0]->_env) {
		1371	+{ map /^([^=]+)(?:=(.*))?$/s && ($1 => $2), @$env }
		1372	} else {
		1373	+{ %ENV }
		1374	}
		1375	}
788		1376
789	=item $modifiermask = $term->ModLevel3Mask	1377	=item $modifiermask = $term->ModLevel3Mask
790		1378
791	=item $modifiermask = $term->ModMetaMask	1379	=item $modifiermask = $term->ModMetaMask
792		1380
793	=item $modifiermask = $term->ModNumLockMask	1381	=item $modifiermask = $term->ModNumLockMask
794		1382
795	Return the modifier masks corresponding to the "ISO Level 3 Shift" (often	1383	Return the modifier masks corresponding to the "ISO Level 3 Shift" (often
796	AltGr), the meta key (often Alt) and the num lock key, if applicable.	1384	AltGr), the meta key (often Alt) and the num lock key, if applicable.
797		1385
		1386	=item $screen = $term->current_screen
		1387
		1388	Returns the currently displayed screen (0 primary, 1 secondary).
		1389
		1390	=item $cursor_is_hidden = $term->hidden_cursor
		1391
		1392	Returns wether the cursor is currently hidden or not.
		1393
798	=item $view_start = $term->view_start ([$newvalue])	1394	=item $view_start = $term->view_start ([$newvalue])
799		1395
800	Returns the negative row number of the topmost line. Minimum value is	1396	Returns the row number of the topmost displayed line. Maximum value is
801	C<0>, which displays the normal terminal contents. Larger values scroll	1397	C<0>, which displays the normal terminal contents. Lower values scroll
802	this many lines into the scrollback buffer.	1398	this many lines into the scrollback buffer.
803		1399
804	=item $term->want_refresh	1400	=item $term->want_refresh
805		1401
806	Requests a screen refresh. At the next opportunity, rxvt-unicode will	1402	Requests a screen refresh. At the next opportunity, rxvt-unicode will
…		…
820	If C<$new_text> is specified, it will replace characters in the current	1416	If C<$new_text> is specified, it will replace characters in the current
821	line, starting at column C<$start_col> (default C<0>), which is useful	1417	line, starting at column C<$start_col> (default C<0>), which is useful
822	to replace only parts of a line. The font index in the rendition will	1418	to replace only parts of a line. The font index in the rendition will
823	automatically be updated.	1419	automatically be updated.
824		1420
825	C<$text> is in a special encoding: tabs and wide characters that use more	1421	C<$text> is in a special encoding: tabs and wide characters that use
826	than one cell when displayed are padded with urxvt::NOCHAR characters	1422	more than one cell when displayed are padded with C<$urxvt::NOCHAR>
827	(C<chr 65535>). Characters with combining characters and other characters	1423	characters. Characters with combining characters and other characters that
828	that do not fit into the normal tetx encoding will be replaced with	1424	do not fit into the normal tetx encoding will be replaced with characters
829	characters in the private use area.	1425	in the private use area.
830		1426
831	You have to obey this encoding when changing text. The advantage is	1427	You have to obey this encoding when changing text. The advantage is
832	that C<substr> and similar functions work on screen cells and not on	1428	that C<substr> and similar functions work on screen cells and not on
833	characters.	1429	characters.
834		1430
…		…
885	Return the row number of the first/last row of the line, respectively.	1481	Return the row number of the first/last row of the line, respectively.
886		1482
887	=item $offset = $line->offset_of ($row, $col)	1483	=item $offset = $line->offset_of ($row, $col)
888		1484
889	Returns the character offset of the given row|col pair within the logical	1485	Returns the character offset of the given row|col pair within the logical
890	line.	1486	line. Works for rows outside the line, too, and returns corresponding
		1487	offsets outside the string.
891		1488
892	=item ($row, $col) = $line->coord_of ($offset)	1489	=item ($row, $col) = $line->coord_of ($offset)
893		1490
894	Translates a string offset into terminal coordinates again.	1491	Translates a string offset into terminal coordinates again.
895		1492
896	=back	1493	=back
897		1494
898	=cut	1495	=cut
899		1496
900	sub urxvt::term::line {	1497	sub line {
901	my ($self, $row) = @_;	1498	my ($self, $row) = @_;
902		1499
903	my $maxrow = $self->nrow - 1;	1500	my $maxrow = $self->nrow - 1;
904		1501
905	my ($beg, $end) = ($row, $row);	1502	my ($beg, $end) = ($row, $row);
…		…
969	$offset / $self->{ncol} + $self->{beg},	1566	$offset / $self->{ncol} + $self->{beg},
970	$offset % $self->{ncol}	1567	$offset % $self->{ncol}
971	)	1568	)
972	}	1569	}
973		1570
974	=item ($row, $col) = $line->coord_of ($offset)
975	=item $text = $term->special_encode $string	1571	=item $text = $term->special_encode $string
976		1572
977	Converts a perl string into the special encoding used by rxvt-unicode,	1573	Converts a perl string into the special encoding used by rxvt-unicode,
978	where one character corresponds to one screen cell. See	1574	where one character corresponds to one screen cell. See
979	C<< $term->ROW_t >> for details.	1575	C<< $term->ROW_t >> for details.
…		…
981	=item $string = $term->special_decode $text	1577	=item $string = $term->special_decode $text
982		1578
983	Converts rxvt-unicodes text reprsentation into a perl string. See	1579	Converts rxvt-unicodes text reprsentation into a perl string. See
984	C<< $term->ROW_t >> for details.	1580	C<< $term->ROW_t >> for details.
985		1581
		1582	=item $success = $term->grab_button ($button, $modifiermask)
		1583
		1584	Registers a synchronous button grab. See the XGrabButton manpage.
		1585
		1586	=item $success = $term->grab ($eventtime[, $sync])
		1587
		1588	Calls XGrabPointer and XGrabKeyboard in asynchronous (default) or
		1589	synchronous (C<$sync> is true). Also remembers the grab timestampe.
		1590
		1591	=item $term->allow_events_async
		1592
		1593	Calls XAllowEvents with AsyncBoth for the most recent grab.
		1594
		1595	=item $term->allow_events_sync
		1596
		1597	Calls XAllowEvents with SyncBoth for the most recent grab.
		1598
		1599	=item $term->allow_events_replay
		1600
		1601	Calls XAllowEvents with both ReplayPointer and ReplayKeyboard for the most
		1602	recent grab.
		1603
		1604	=item $term->ungrab
		1605
		1606	Calls XUngrab for the most recent grab. Is called automatically on
		1607	evaluation errors, as it is better to lose the grab in the error case as
		1608	the session.
		1609
		1610	=item $atom = $term->XInternAtom ($atom_name[, $only_if_exists])
		1611
		1612	=item $atom_name = $term->XGetAtomName ($atom)
		1613
		1614	=item @atoms = $term->XListProperties ($window)
		1615
		1616	=item ($type,$format,$octets) = $term->XGetWindowProperty ($window, $property)
		1617
		1618	=item $term->XChangeWindowProperty ($window, $property, $type, $format, $octets)
		1619
		1620	=item $term->XDeleteProperty ($window, $property)
		1621
		1622	=item $window = $term->DefaultRootWindow
		1623
		1624	=item $term->XReparentWindow ($window, $parent, [$x, $y])
		1625
		1626	=item $term->XMapWindow ($window)
		1627
		1628	=item $term->XUnmapWindow ($window)
		1629
		1630	=item $term->XMoveResizeWindow ($window, $x, $y, $width, $height)
		1631
		1632	=item ($x, $y, $child_window) = $term->XTranslateCoordinates ($src, $dst, $x, $y)
		1633
		1634	=item $term->XChangeInput ($window, $add_events[, $del_events])
		1635
		1636	Various X or X-related functions. The C<$term> object only serves as
		1637	the source of the display, otherwise those functions map more-or-less
		1638	directory onto the X functions of the same name.
		1639
986	=back	1640	=back
987		1641
		1642	=cut
		1643
		1644	package urxvt::popup;
		1645
988	=head2 The C<urxvt::popup> Class	1646	=head2 The C<urxvt::popup> Class
989		1647
990	=over 4	1648	=over 4
991		1649
992	=cut	1650	=cut
993
994	package urxvt::popup;
995		1651
996	sub add_item {	1652	sub add_item {
997	my ($self, $item) = @_;	1653	my ($self, $item) = @_;
998		1654
		1655	$item->{rend}{normal} = "\x1b[0;30;47m" unless exists $item->{rend}{normal};
		1656	$item->{rend}{hover} = "\x1b[0;30;46m" unless exists $item->{rend}{hover};
		1657	$item->{rend}{active} = "\x1b[m" unless exists $item->{rend}{active};
		1658
		1659	$item->{render} ||= sub { $_[0]{text} };
		1660
999	push @{ $self->{item} }, $item;	1661	push @{ $self->{item} }, $item;
1000	}	1662	}
		1663
		1664	=item $popup->add_title ($title)
		1665
		1666	Adds a non-clickable title to the popup.
		1667
		1668	=cut
		1669
		1670	sub add_title {
		1671	my ($self, $title) = @_;
		1672
		1673	$self->add_item ({
		1674	rend => { normal => "\x1b[38;5;11;44m", hover => "\x1b[38;5;11;44m", active => "\x1b[38;5;11;44m" },
		1675	text => $title,
		1676	activate => sub { },
		1677	});
		1678	}
		1679
		1680	=item $popup->add_separator ([$sepchr])
		1681
		1682	Creates a separator, optionally using the character given as C<$sepchr>.
		1683
		1684	=cut
		1685
		1686	sub add_separator {
		1687	my ($self, $sep) = @_;
		1688
		1689	$sep ||= "=";
		1690
		1691	$self->add_item ({
		1692	rend => { normal => "\x1b[0;30;47m", hover => "\x1b[0;30;47m", active => "\x1b[0;30;47m" },
		1693	text => "",
		1694	render => sub { $sep x $self->{term}->ncol },
		1695	activate => sub { },
		1696	});
		1697	}
		1698
		1699	=item $popup->add_button ($text, $cb)
		1700
		1701	Adds a clickable button to the popup. C<$cb> is called whenever it is
		1702	selected.
		1703
		1704	=cut
1001		1705
1002	sub add_button {	1706	sub add_button {
1003	my ($self, $text, $cb) = @_;	1707	my ($self, $text, $cb) = @_;
1004		1708
1005	$self->add_item ({ type => "button", text => "[ $text ]", activate => $cb });	1709	$self->add_item ({ type => "button", text => $text, activate => $cb});
1006	}	1710	}
		1711
		1712	=item $popup->add_toggle ($text, $cb, $initial_value)
		1713
		1714	Adds a toggle/checkbox item to the popup. Teh callback gets called
		1715	whenever it gets toggled, with a boolean indicating its value as its first
		1716	argument.
		1717
		1718	=cut
		1719
		1720	sub add_toggle {
		1721	my ($self, $text, $cb, $value) = @_;
		1722
		1723	my $item; $item = {
		1724	type => "button",
		1725	text => " $text",
		1726	value => $value,
		1727	render => sub { ($_[0]{value} ? "* " : " ") . $text },
		1728	activate => sub { $cb->($_[1]{value} = !$_[1]{value}); },
		1729	};
		1730
		1731	$self->add_item ($item);
		1732	}
		1733
		1734	=item $popup->show
		1735
		1736	Displays the popup (which is initially hidden).
		1737
		1738	=cut
1007		1739
1008	sub show {	1740	sub show {
1009	my ($self) = @_;	1741	my ($self) = @_;
1010		1742
1011	local $urxvt::popup::self = $self;	1743	local $urxvt::popup::self = $self;
1012		1744
1013	urxvt->new ("--perl-lib" => "", "--perl-ext-common" => "", "-pty-fd" => -1, "-sl" => 0, "-b" => 0,	1745	my $env = $self->{term}->env;
		1746	# we can't hope to reproduce the locale algorithm, so nuke LC_ALL and set LC_CTYPE.
		1747	delete $env->{LC_ALL};
		1748	$env->{LC_CTYPE} = $self->{term}->locale;
		1749
		1750	urxvt::term->new ($env, "popup",
		1751	"--perl-lib" => "", "--perl-ext-common" => "",
		1752	"-pty-fd" => -1, "-sl" => 0,
		1753	"-b" => 1, "-bd" => "grey80", "-bl", "-override-redirect",
1014	"--transient-for" => $self->{term}->parent,	1754	"--transient-for" => $self->{term}->parent,
		1755	"-display" => $self->{term}->display_id,
1015	"-pe" => "urxvt-popup")	1756	"-pe" => "urxvt-popup")
1016	or die "unable to create popup window\n";	1757	or die "unable to create popup window\n";
1017	}	1758	}
1018		1759
1019	sub DESTROY {	1760	sub DESTROY {
1020	my ($self) = @_;	1761	my ($self) = @_;
1021		1762
		1763	delete $self->{term}{_destroy}{$self};
1022	$self->{term}->ungrab;	1764	$self->{term}->ungrab;
1023	}	1765	}
		1766
		1767	=back
		1768
		1769	=cut
		1770
		1771	package urxvt::watcher;
		1772
		1773	@urxvt::timer::ISA = __PACKAGE__;
		1774	@urxvt::iow::ISA = __PACKAGE__;
		1775	@urxvt::pw::ISA = __PACKAGE__;
		1776	@urxvt::iw::ISA = __PACKAGE__;
1024		1777
1025	=head2 The C<urxvt::timer> Class	1778	=head2 The C<urxvt::timer> Class
1026		1779
1027	This class implements timer watchers/events. Time is represented as a	1780	This class implements timer watchers/events. Time is represented as a
1028	fractional number of seconds since the epoch. Example:	1781	fractional number of seconds since the epoch. Example:
…		…
1067		1820
1068	=item $timer = $timer->start ($tstamp)	1821	=item $timer = $timer->start ($tstamp)
1069		1822
1070	Set the event trigger time to C<$tstamp> and start the timer.	1823	Set the event trigger time to C<$tstamp> and start the timer.
1071		1824
		1825	=item $timer = $timer->after ($delay)
		1826
		1827	Like C<start>, but sets the expiry timer to c<urxvt::NOW + $delay>.
		1828
1072	=item $timer = $timer->stop	1829	=item $timer = $timer->stop
1073		1830
1074	Stop the timer.	1831	Stop the timer.
1075		1832
1076	=back	1833	=back
…		…
1081		1838
1082	$term->{socket} = ...	1839	$term->{socket} = ...
1083	$term->{iow} = urxvt::iow	1840	$term->{iow} = urxvt::iow
1084	->new	1841	->new
1085	->fd (fileno $term->{socket})	1842	->fd (fileno $term->{socket})
1086	->events (1) # wait for read data	1843	->events (urxvt::EVENT_READ)
1087	->start	1844	->start
1088	->cb (sub {	1845	->cb (sub {
1089	my ($iow, $revents) = @_;	1846	my ($iow, $revents) = @_;
1090	# $revents must be 1 here, no need to check	1847	# $revents must be 1 here, no need to check
1091	sysread $term->{socket}, my $buf, 8192	1848	sysread $term->{socket}, my $buf, 8192
…		…
1108		1865
1109	Set the filedescriptor (not handle) to watch.	1866	Set the filedescriptor (not handle) to watch.
1110		1867
1111	=item $iow = $iow->events ($eventmask)	1868	=item $iow = $iow->events ($eventmask)
1112		1869
1113	Set the event mask to watch. Bit #0 (value C<1>) enables watching for read	1870	Set the event mask to watch. The only allowed values are
1114	data, Bit #1 (value C<2>) enables watching for write data.	1871	C<urxvt::EVENT_READ> and C<urxvt::EVENT_WRITE>, which might be ORed
		1872	together, or C<urxvt::EVENT_NONE>.
1115		1873
1116	=item $iow = $iow->start	1874	=item $iow = $iow->start
1117		1875
1118	Start watching for requested events on the given handle.	1876	Start watching for requested events on the given handle.
1119		1877
1120	=item $iow = $iow->stop	1878	=item $iow = $iow->stop
1121		1879
1122	Stop watching for events on the given filehandle.	1880	Stop watching for events on the given filehandle.
		1881
		1882	=back
		1883
		1884	=head2 The C<urxvt::iw> Class
		1885
		1886	This class implements idle watchers, that get called automatically when
		1887	the process is idle. They should return as fast as possible, after doing
		1888	some useful work.
		1889
		1890	=over 4
		1891
		1892	=item $iw = new urxvt::iw
		1893
		1894	Create a new idle watcher object in stopped state.
		1895
		1896	=item $iw = $iw->cb (sub { my ($iw) = @_; ... })
		1897
		1898	Set the callback to be called when the watcher triggers.
		1899
		1900	=item $timer = $timer->start
		1901
		1902	Start the watcher.
		1903
		1904	=item $timer = $timer->stop
		1905
		1906	Stop the watcher.
		1907
		1908	=back
		1909
		1910	=head2 The C<urxvt::pw> Class
		1911
		1912	This class implements process watchers. They create an event whenever a
		1913	process exits, after which they stop automatically.
		1914
		1915	my $pid = fork;
		1916	...
		1917	$term->{pw} = urxvt::pw
		1918	->new
		1919	->start ($pid)
		1920	->cb (sub {
		1921	my ($pw, $exit_status) = @_;
		1922	...
		1923	});
		1924
		1925	=over 4
		1926
		1927	=item $pw = new urxvt::pw
		1928
		1929	Create a new process watcher in stopped state.
		1930
		1931	=item $pw = $pw->cb (sub { my ($pw, $exit_status) = @_; ... })
		1932
		1933	Set the callback to be called when the timer triggers.
		1934
		1935	=item $pw = $timer->start ($pid)
		1936
		1937	Tells the wqtcher to start watching for process C<$pid>.
		1938
		1939	=item $pw = $pw->stop
		1940
		1941	Stop the watcher.
1123		1942
1124	=back	1943	=back
1125		1944
1126	=head1 ENVIRONMENT	1945	=head1 ENVIRONMENT
1127		1946
…		…
1130	This variable controls the verbosity level of the perl extension. Higher	1949	This variable controls the verbosity level of the perl extension. Higher
1131	numbers indicate more verbose output.	1950	numbers indicate more verbose output.
1132		1951
1133	=over 4	1952	=over 4
1134		1953
1135	=item =0 - only fatal messages	1954	=item == 0 - fatal messages
1136		1955
1137	=item =3 - script loading and management	1956	=item >= 3 - script loading and management
1138		1957
1139	=item =10 - all events received	1958	=item >=10 - all called hooks
		1959
		1960	=item >=11 - hook reutrn values
1140		1961
1141	=back	1962	=back
1142		1963
1143	=head1 AUTHOR	1964	=head1 AUTHOR
1144		1965

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