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Comparing rxvt-unicode/src/urxvt.pm (file contents):
Revision 1.58 by root, Sun Jan 8 22:58:13 2006 UTC vs.
Revision 1.130 by root, Wed Jan 25 15:32:48 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 (enabled by default)	46	=item selection (enabled by default)
43		47
44	Intelligent selection. This extension tries to be more intelligent when	48	(More) intelligent selection. This extension tries to be more intelligent
45	the user extends selections (double-click). Right now, it tries to select	49	when the user extends selections (double-click and further clicks). Right
46	urls and complete shell-quoted arguments, which is very convenient, too,	50	now, it tries to select words, urls and complete shell-quoted
47	if your F<ls> supports C<--quoting-style=shell>.	51	arguments, which is very convenient, too, if your F<ls> supports
		52	C<--quoting-style=shell>.
48		53
49	It also offers the following bindable event:	54	A double-click usually selects the word under the cursor, further clicks
		55	will enlarge the selection.
		56
		57	The selection works by trying to match a number of regexes and displaying
		58	them in increasing order of length. You can add your own regexes by
		59	specifying resources of the form:
		60
		61	URxvt.selection.pattern-0: perl-regex
		62	URxvt.selection.pattern-1: perl-regex
		63	...
		64
		65	The index number (0, 1...) must not have any holes, and each regex must
		66	contain at least one pair of capturing parentheses, which will be used for
		67	the match. For example, the followign adds a regex that matches everything
		68	between two vertical bars:
		69
		70	URxvt.selection.pattern-0: \\|([^|]+)\\|
		71
		72	Another example: Programs I use often output "absolute path: " at the
		73	beginning of a line when they process multiple files. The following
		74	pattern matches the filename (note, there is a single space at the very
		75	end):
		76
		77	URxvt.selection.pattern-0: ^(/[^:]+):\
		78
		79	You can look at the source of the selection extension to see more
		80	interesting uses, such as parsing a line from beginning to end.
		81
		82	This extension also offers following bindable keyboard commands:
50		83
51	=over 4	84	=over 4
52		85
53	=item rot13	86	=item rot13
54		87
…		…
58		91
59	=back	92	=back
60		93
61	=item option-popup (enabled by default)	94	=item option-popup (enabled by default)
62		95
63	Binds a popup menu to Ctrl-Button3 that lets you toggle (some) options at	96	Binds a popup menu to Ctrl-Button2 that lets you toggle (some) options at
64	runtime.	97	runtime.
65		98
66	=item digital-clock	99	=item selection-popup (enabled by default)
67		100
68	Displays a digital clock using the built-in overlay.	101	Binds a popup menu to Ctrl-Button3 that lets you convert the selection
		102	text into various other formats/action (such as uri unescaping, perl
		103	evaluation, web-browser starting etc.), depending on content.
		104
		105	Other extensions can extend this popup menu by pushing a code reference
		106	onto C<@{ $term->{selection_popup_hook} }>, that is called whenever the
		107	popup is displayed.
		108
		109	It's sole argument is the popup menu, which can be modified. The selection
		110	is in C<$_>, which can be used to decide wether to add something or not.
		111	It should either return nothing or a string and a code reference. The
		112	string will be used as button text and the code reference will be called
		113	when the button gets activated and should transform C<$_>.
		114
		115	The following will add an entry C<a to b> that transforms all C<a>s in
		116	the selection to C<b>s, but only if the selection currently contains any
		117	C<a>s:
		118
		119	push @{ $self->{term}{selection_popup_hook} }, sub {
		120	/a/ ? ("a to be" => sub { s/a/b/g }
		121	: ()
		122	};
		123
		124	=item searchable-scrollback<hotkey> (enabled by default)
		125
		126	Adds regex search functionality to the scrollback buffer, triggered
		127	by a hotkey (default: C<M-s>). While in search mode, normal terminal
		128	input/output is suspended and a regex is displayed at the bottom of the
		129	screen.
		130
		131	Inputting characters appends them to the regex and continues incremental
		132	search. C<BackSpace> removes a character from the regex, C<Up> and C<Down>
		133	search upwards/downwards in the scrollback buffer, C<End> jumps to the
		134	bottom. C<Escape> leaves search mode and returns to the point where search
		135	was started, while C<Enter> or C<Return> stay at the current position and
		136	additionally stores the first match in the current line into the primary
		137	selection.
		138
		139	=item readline (enabled by default)
		140
		141	A support package that tries to make editing with readline easier. At the
		142	moment, it reacts to clicking with the left mouse button by trying to
		143	move the text cursor to this position. It does so by generating as many
		144	cursor-left or cursor-right keypresses as required (the this only works
		145	for programs that correctly support wide characters).
		146
		147	To avoid too many false positives, this is only done when:
		148
		149	=over 4
		150
		151	=item - the tty is in ICANON state.
		152
		153	=item - the text cursor is visible.
		154
		155	=item - the primary screen is currently being displayed.
		156
		157	=item - the mouse is on the same (multi-row-) line as the text cursor.
		158
		159	=back
		160
		161	The normal selection mechanism isn't disabled, so quick successive clicks
		162	might interfere with selection creation in harmless ways.
		163
		164	=item selection-autotransform
		165
		166	This selection allows you to do automatic transforms on a selection
		167	whenever a selection is made.
		168
		169	It works by specifying perl snippets (most useful is a single C<s///>
		170	operator) that modify C<$_> as resources:
		171
		172	URxvt.selection-autotransform.0: transform
		173	URxvt.selection-autotransform.1: transform
		174	...
		175
		176	For example, the following will transform selections of the form
		177	C<filename:number>, often seen in compiler messages, into C<vi +$filename
		178	$word>:
		179
		180	URxvt.selection-autotransform.0: s/^([^:[:space:]]+):(\\d+):?$/vi +$2 \\Q$1\\E\\x0d/
		181
		182	And this example matches the same,but replaces it with vi-commands you can
		183	paste directly into your (vi :) editor:
		184
		185	URxvt.selection-autotransform.0: s/^([^:[:space:]]+(\\d+):?$/:e \\Q$1\\E\\x0d:$2\\x0d/
		186
		187	Of course, this can be modified to suit your needs and your editor :)
		188
		189	To expand the example above to typical perl error messages ("XXX at
		190	FILENAME line YYY."), you need a slightly more elaborate solution:
		191
		192	URxvt.selection.pattern-0: ( at .*? line \\d+[,.])
		193	URxvt.selection-autotransform.0: s/^ at (.*?) line (\\d+)[,.]$/:e \\Q$1\E\\x0d:$2\\x0d/
		194
		195	The first line tells the selection code to treat the unchanging part of
		196	every error message as a selection pattern, and the second line transforms
		197	the message into vi commands to load the file.
		198
		199	=item tabbed
		200
		201	This transforms the terminal into a tabbar with additional terminals, that
		202	is, it implements what is commonly refered to as "tabbed terminal". The topmost line
		203	displays a "[NEW]" button, which, when clicked, will add a new tab, followed by one
		204	button per tab.
		205
		206	Clicking a button will activate that tab. Pressing B<Shift-Left> and
		207	B<Shift-Right> will switch to the tab left or right of the current one,
		208	while B<Shift-Down> creates a new tab.
69		209
70	=item mark-urls	210	=item mark-urls
71		211
72	Uses per-line display filtering (C<on_line_update>) to underline urls.	212	Uses per-line display filtering (C<on_line_update>) to underline urls and
		213	make them clickable. When middle-clicked, the program specified in the
		214	resource C<urlLauncher> (default C<x-www-browser>) will be started with
		215	the URL as first argument.
		216
		217	=item xim-onthespot
		218
		219	This (experimental) perl extension implements OnTheSpot editing. It does
		220	not work perfectly, and some input methods don't seem to work well with
		221	OnTheSpot editing in general, but it seems to work at leats for SCIM and
		222	kinput2.
		223
		224	You enable it by specifying this extension and a preedit style of
		225	C<OnTheSpot>, i.e.:
		226
		227	@@RXVT_NAME@@ -pt OnTheSpot -pe xim-onthespot
		228
		229	=item automove-background
		230
		231	This is basically a one-line extension that dynamically changes the background pixmap offset
		232	to the window position, in effect creating the same effect as pseudo transparency with
		233	a custom pixmap. No scaling is supported in this mode. Exmaple:
		234
		235	@@RXVT_NAME@@ -pixmap background.xpm -pe automove-background
73		236
74	=item block-graphics-to-ascii	237	=item block-graphics-to-ascii
75		238
76	A not very useful example of filtering all text output to the terminal,	239	A not very useful example of filtering all text output to the terminal,
77	by replacing all line-drawing characters (U+2500 .. U+259F) by a	240	by replacing all line-drawing characters (U+2500 .. U+259F) by a
78	similar-looking ascii character.	241	similar-looking ascii character.
79		242
		243	=item digital-clock
		244
		245	Displays a digital clock using the built-in overlay.
		246
		247	=item remote-clipboard
		248
		249	Somewhat of a misnomer, this extension adds two menu entries to the
		250	selection popup that allows one ti run external commands to store the
		251	selection somewhere and fetch it again.
		252
		253	We use it to implement a "distributed selection mechanism", which just
		254	means that one command uploads the file to a remote server, and another
		255	reads it.
		256
		257	The commands can be set using the C<URxvt.remote-selection.store> and
		258	C<URxvt.remote-selection.fetch> resources. The first should read the
		259	selection to store from STDIN (always in UTF-8), the second should provide
		260	the selection data on STDOUT (also in UTF-8).
		261
		262	The defaults (which are likely useless to you) use rsh and cat:
		263
		264	URxvt.remote-selection.store: rsh ruth 'cat >/tmp/distributed-selection'
		265	URxvt.remote-selection.fetch: rsh ruth 'cat /tmp/distributed-selection'
		266
		267	=item selection-pastebin
		268
		269	This is a little rarely useful extension that Uploads the selection as
		270	textfile to a remote site (or does other things). (The implementation is
		271	not currently secure for use in a multiuser environment as it writes to
		272	F</tmp> directly.).
		273
		274	It listens to the C<selection-pastebin:remote-pastebin> keyboard command,
		275	i.e.
		276
		277	URxvt.keysym.C-M-e: perl:selection-pastebin:remote-pastebin
		278
		279	Pressing this combination runs a command with C<%> replaced by the name of
		280	the textfile. This command can be set via a resource:
		281
		282	URxvt.selection-pastebin.cmd: rsync -apP % ruth:/var/www/www.ta-sa.org/files/txt/.
		283
		284	And the default is likely not useful to anybody but the few people around
		285	here :)
		286
		287	The name of the textfile is the hex encoded md5 sum of the selection, so
		288	the same content should lead to the same filename.
		289
		290	After a successful upload the selection will be replaced by the text given
		291	in the C<selection-pastebin-url> resource (again, the % is the placeholder
		292	for the filename):
		293
		294	URxvt.selection-pastebin.url: http://www.ta-sa.org/files/txt/%
		295
80	=item example-refresh-hooks	296	=item example-refresh-hooks
81		297
82	Displays a very simple digital clock in the upper right corner of the	298	Displays a very simple digital clock in the upper right corner of the
83	window. Illustrates overwriting the refresh callbacks to create your own	299	window. Illustrates overwriting the refresh callbacks to create your own
84	overlays or changes.	300	overlays or changes.
85		301
86	=back	302	=back
		303
		304	=head1 API DOCUMENTATION
87		305
88	=head2 General API Considerations	306	=head2 General API Considerations
89		307
90	All objects (such as terminals, time watchers etc.) are typical	308	All objects (such as terminals, time watchers etc.) are typical
91	reference-to-hash objects. The hash can be used to store anything you	309	reference-to-hash objects. The hash can be used to store anything you
…		…
104	=over 4	322	=over 4
105		323
106	=item $text	324	=item $text
107		325
108	Rxvt-unicodes special way of encoding text, where one "unicode" character	326	Rxvt-unicodes special way of encoding text, where one "unicode" character
109	always represents one screen cell. See L<row_t> for a discussion of this format.	327	always represents one screen cell. See L<ROW_t> for a discussion of this format.
110		328
111	=item $string	329	=item $string
112		330
113	A perl text string, with an emphasis on I<text>. It can store all unicode	331	A perl text string, with an emphasis on I<text>. It can store all unicode
114	characters and is to be distinguished with text encoded in a specific	332	characters and is to be distinguished with text encoded in a specific
…		…
119	Either binary data or - more common - a text string encoded in a	337	Either binary data or - more common - a text string encoded in a
120	locale-specific way.	338	locale-specific way.
121		339
122	=back	340	=back
123		341
		342	=head2 Extension Objects
		343
		344	Very perl extension is a perl class. A separate perl object is created
		345	for each terminal and each extension and passed as the first parameter to
		346	hooks. So extensions can use their C<$self> object without having to think
		347	about other extensions, with the exception of methods and members that
		348	begin with an underscore character C<_>: these are reserved for internal
		349	use.
		350
		351	Although it isn't a C<urxvt::term> object, you can call all methods of the
		352	C<urxvt::term> class on this object.
		353
		354	It has the following methods and data members:
		355
		356	=over 4
		357
		358	=item $urxvt_term = $self->{term}
		359
		360	Returns the C<urxvt::term> object associated with this instance of the
		361	extension. This member I<must not> be changed in any way.
		362
		363	=item $self->enable ($hook_name => $cb, [$hook_name => $cb..])
		364
		365	Dynamically enable the given hooks (named without the C<on_> prefix) for
		366	this extension, replacing any previous hook. This is useful when you want
		367	to overwrite time-critical hooks only temporarily.
		368
		369	=item $self->disable ($hook_name[, $hook_name..])
		370
		371	Dynamically disable the given hooks.
		372
		373	=back
		374
124	=head2 Hooks	375	=head2 Hooks
125		376
126	The following subroutines can be declared in extension files, and will be	377	The following subroutines can be declared in extension files, and will be
127	called whenever the relevant event happens.	378	called whenever the relevant event happens.
128		379
129	The first argument passed to them is an object private to each terminal	380	The first argument passed to them is an extension oject as described in
130	and extension package. You can call all C<urxvt::term> methods on it, but	381	the in the C<Extension Objects> section.
131	its not a real C<urxvt::term> object. Instead, the real C<urxvt::term>
132	object that is shared between all packages is stored in the C<term>
133	member. It is, however, blessed intot he package of the extension script,
134	so for all practical purposes you can treat an extension script as a class.
135		382
136	All of them must return a boolean value. If it is true, then the event	383	B<All> of these hooks must return a boolean value. If any of the called
137	counts as being I<consumed>, and the invocation of other hooks is skipped,	384	hooks returns true, then the event counts as being I<consumed>, and the
138	and the relevant action might not be carried out by the C++ code.	385	relevant action might not be carried out by the C++ code.
139		386
140	When in doubt, return a false value (preferably C<()>).	387	I<< When in doubt, return a false value (preferably C<()>). >>
141		388
142	=over 4	389	=over 4
143		390
144	=item on_init $term	391	=item on_init $term
145		392
146	Called after a new terminal object has been initialized, but before	393	Called after a new terminal object has been initialized, but before
147	windows are created or the command gets run. Most methods are unsafe to	394	windows are created or the command gets run. Most methods are unsafe to
148	call or deliver senseless data, as terminal size and other characteristics	395	call or deliver senseless data, as terminal size and other characteristics
149	have not yet been determined. You can safely query and change resources,	396	have not yet been determined. You can safely query and change resources
150	though.	397	and options, though. For many purposes the C<on_start> hook is a better
		398	place.
		399
		400	=item on_start $term
		401
		402	Called at the very end of initialisation of a new terminal, just before
		403	trying to map (display) the toplevel and returning to the mainloop.
		404
		405	=item on_destroy $term
		406
		407	Called whenever something tries to destroy terminal, when the terminal is
		408	still fully functional (not for long, though).
151		409
152	=item on_reset $term	410	=item on_reset $term
153		411
154	Called after the screen is "reset" for any reason, such as resizing or	412	Called after the screen is "reset" for any reason, such as resizing or
155	control sequences. Here is where you can react on changes to size-related	413	control sequences. Here is where you can react on changes to size-related
156	variables.	414	variables.
157		415
158	=item on_start $term	416	=item on_child_start $term, $pid
159		417
160	Called at the very end of initialisation of a new terminal, just before	418	Called just after the child process has been C<fork>ed.
161	returning to the mainloop.	419
		420	=item on_child_exit $term, $status
		421
		422	Called just after the child process has exited. C<$status> is the status
		423	from C<waitpid>.
162		424
163	=item on_sel_make $term, $eventtime	425	=item on_sel_make $term, $eventtime
164		426
165	Called whenever a selection has been made by the user, but before the	427	Called whenever a selection has been made by the user, but before the
166	selection text is copied, so changes to the beginning, end or type of the	428	selection text is copied, so changes to the beginning, end or type of the
…		…
180	=item on_sel_extend $term	442	=item on_sel_extend $term
181		443
182	Called whenever the user tries to extend the selection (e.g. with a double	444	Called whenever the user tries to extend the selection (e.g. with a double
183	click) and is either supposed to return false (normal operation), or	445	click) and is either supposed to return false (normal operation), or
184	should extend the selection itelf and return true to suppress the built-in	446	should extend the selection itelf and return true to suppress the built-in
185	processing.	447	processing. This can happen multiple times, as long as the callback
		448	returns true, it will be called on every further click by the user and is
		449	supposed to enlarge the selection more and more, if possible.
186		450
187	See the F<selection> example extension.	451	See the F<selection> example extension.
188		452
189	=item on_view_change $term, $offset	453	=item on_view_change $term, $offset
190		454
…		…
199	than the scroll back buffer or the terminal.	463	than the scroll back buffer or the terminal.
200		464
201	It is called before lines are scrolled out (so rows 0 .. min ($lines - 1,	465	It is called before lines are scrolled out (so rows 0 .. min ($lines - 1,
202	$nrow - 1) represent the lines to be scrolled out). C<$saved> is the total	466	$nrow - 1) represent the lines to be scrolled out). C<$saved> is the total
203	number of lines that will be in the scrollback buffer.	467	number of lines that will be in the scrollback buffer.
204
205	=item on_tty_activity $term *NYI*
206
207	Called whenever the program(s) running in the urxvt window send output.
208		468
209	=item on_osc_seq $term, $string	469	=item on_osc_seq $term, $string
210		470
211	Called whenever the B<ESC ] 777 ; string ST> command sequence (OSC =	471	Called whenever the B<ESC ] 777 ; string ST> command sequence (OSC =
212	operating system command) is processed. Cursor position and other state	472	operating system command) is processed. Cursor position and other state
…		…
225	can filter/change and output the text yourself by returning a true value	485	can filter/change and output the text yourself by returning a true value
226	and calling C<< $term->scr_add_lines >> yourself. Please note that this	486	and calling C<< $term->scr_add_lines >> yourself. Please note that this
227	might be very slow, however, as your hook is called for B<all> text being	487	might be very slow, however, as your hook is called for B<all> text being
228	output.	488	output.
229		489
		490	=item on_tt_write $term, $octets
		491
		492	Called whenever some data is written to the tty/pty and can be used to
		493	suppress or filter tty input.
		494
230	=item on_line_update $term, $row	495	=item on_line_update $term, $row
231		496
232	Called whenever a line was updated or changed. Can be used to filter	497	Called whenever a line was updated or changed. Can be used to filter
233	screen output (e.g. underline urls or other useless stuff). Only lines	498	screen output (e.g. underline urls or other useless stuff). Only lines
234	that are being shown will be filtered, and, due to performance reasons,	499	that are being shown will be filtered, and, due to performance reasons,
…		…
250		515
251	=item on_refresh_end $term	516	=item on_refresh_end $term
252		517
253	Called just after the screen gets redrawn. See C<on_refresh_begin>.	518	Called just after the screen gets redrawn. See C<on_refresh_begin>.
254		519
255	=item on_keyboard_command $term, $string	520	=item on_user_command $term, $string
256		521
257	Called whenever the user presses a key combination that has a	522	Called whenever the a user-configured event is being activated (e.g. via
258	C<perl:string> action bound to it (see description of the B<keysym>	523	a C<perl:string> action bound to a key, see description of the B<keysym>
259	resource in the @@RXVT_NAME@@(1) manpage).	524	resource in the @@RXVT_NAME@@(1) manpage).
		525
		526	The event is simply the action string. This interface is assumed to change
		527	slightly in the future.
		528
		529	=item on_x_event $term, $event
		530
		531	Called on every X event received on the vt window (and possibly other
		532	windows). Should only be used as a last resort. Most event structure
		533	members are not passed.
260		534
261	=item on_focus_in $term	535	=item on_focus_in $term
262		536
263	Called whenever the window gets the keyboard focus, before rxvt-unicode	537	Called whenever the window gets the keyboard focus, before rxvt-unicode
264	does focus in processing.	538	does focus in processing.
…		…
266	=item on_focus_out $term	540	=item on_focus_out $term
267		541
268	Called wheneever the window loses keyboard focus, before rxvt-unicode does	542	Called wheneever the window loses keyboard focus, before rxvt-unicode does
269	focus out processing.	543	focus out processing.
270		544
		545	=item on_configure_notify $term, $event
		546
		547	=item on_property_notify $term, $event
		548
271	=item on_key_press $term, $event, $octets	549	=item on_key_press $term, $event, $keysym, $octets
272		550
273	=item on_key_release $term, $event	551	=item on_key_release $term, $event, $keysym
274		552
275	=item on_button_press $term, $event	553	=item on_button_press $term, $event
276		554
277	=item on_button_release $term, $event	555	=item on_button_release $term, $event
278		556
…		…
284		562
285	Called whenever the corresponding X event is received for the terminal If	563	Called whenever the corresponding X event is received for the terminal If
286	the hook returns true, then the even will be ignored by rxvt-unicode.	564	the hook returns true, then the even will be ignored by rxvt-unicode.
287		565
288	The event is a hash with most values as named by Xlib (see the XEvent	566	The event is a hash with most values as named by Xlib (see the XEvent
289	manpage), with the additional members C<row> and C<col>, which are the row	567	manpage), with the additional members C<row> and C<col>, which are the
290	and column under the mouse cursor.	568	(real, not screen-based) row and column under the mouse cursor.
291		569
292	C<on_key_press> additionally receives the string rxvt-unicode would	570	C<on_key_press> additionally receives the string rxvt-unicode would
293	output, if any, in locale-specific encoding.	571	output, if any, in locale-specific encoding.
294		572
295	subwindow.	573	subwindow.
296		574
		575	=item on_client_message $term, $event
		576
		577	=item on_wm_protocols $term, $event
		578
		579	=item on_wm_delete_window $term, $event
		580
		581	Called when various types of ClientMessage events are received (all with
		582	format=32, WM_PROTOCOLS or WM_PROTOCOLS:WM_DELETE_WINDOW).
		583
297	=back	584	=back
298		585
		586	=cut
		587
		588	package urxvt;
		589
		590	use utf8;
		591	use strict;
		592	use Carp ();
		593	use Scalar::Util ();
		594	use List::Util ();
		595
		596	our $VERSION = 1;
		597	our $TERM;
		598	our @TERM_INIT;
		599	our @TERM_EXT;
		600	our @HOOKNAME;
		601	our %HOOKTYPE = map +($HOOKNAME[$_] => $_), 0..$#HOOKNAME;
		602	our %OPTION;
		603
		604	our $LIBDIR;
		605	our $RESNAME;
		606	our $RESCLASS;
		607	our $RXVTNAME;
		608
		609	our $NOCHAR = chr 0xffff;
		610
299	=head2 Variables in the C<urxvt> Package	611	=head2 Variables in the C<urxvt> Package
300		612
301	=over 4	613	=over 4
		614
		615	=item $urxvt::LIBDIR
		616
		617	The rxvt-unicode library directory, where, among other things, the perl
		618	modules and scripts are stored.
		619
		620	=item $urxvt::RESCLASS, $urxvt::RESCLASS
		621
		622	The resource class and name rxvt-unicode uses to look up X resources.
		623
		624	=item $urxvt::RXVTNAME
		625
		626	The basename of the installed binaries, usually C<urxvt>.
302		627
303	=item $urxvt::TERM	628	=item $urxvt::TERM
304		629
305	The current terminal. This variable stores the current C<urxvt::term>	630	The current terminal. This variable stores the current C<urxvt::term>
306	object, whenever a callback/hook is executing.	631	object, whenever a callback/hook is executing.
307		632
		633	=item @urxvt::TERM_INIT
		634
		635	All coderefs in this array will be called as methods of the next newly
		636	created C<urxvt::term> object (during the C<on_init> phase). The array
		637	gets cleared before the codereferences that were in it are being executed,
		638	so coderefs can push themselves onto it again if they so desire.
		639
		640	This complements to the perl-eval commandline option, but gets executed
		641	first.
		642
		643	=item @urxvt::TERM_EXT
		644
		645	Works similar to C<@TERM_INIT>, but contains perl package/class names, which
		646	get registered as normal extensions after calling the hooks in C<@TERM_INIT>
		647	but before other extensions. Gets cleared just like C<@TERM_INIT>.
		648
308	=back	649	=back
309		650
310	=head2 Functions in the C<urxvt> Package	651	=head2 Functions in the C<urxvt> Package
311		652
312	=over 4	653	=over 4
313
314	=item $term = new urxvt [arg...]
315
316	Creates a new terminal, very similar as if you had started it with
317	C<system $binfile, arg...>. Croaks (and probably outputs an error message)
318	if the new instance couldn't be created. Returns C<undef> if the new
319	instance didn't initialise perl, and the terminal object otherwise. The
320	C<init> and C<start> hooks will be called during the call.
321		654
322	=item urxvt::fatal $errormessage	655	=item urxvt::fatal $errormessage
323		656
324	Fatally aborts execution with the given error message. Avoid at all	657	Fatally aborts execution with the given error message. Avoid at all
325	costs! The only time this is acceptable is when the terminal process	658	costs! The only time this is acceptable is when the terminal process
…		…
332	that calls this function.	665	that calls this function.
333		666
334	Using this function has the advantage that its output ends up in the	667	Using this function has the advantage that its output ends up in the
335	correct place, e.g. on stderr of the connecting urxvtc client.	668	correct place, e.g. on stderr of the connecting urxvtc client.
336		669
		670	Messages have a size limit of 1023 bytes currently.
		671
337	=item $time = urxvt::NOW	672	=item $time = urxvt::NOW
338		673
339	Returns the "current time" (as per the event loop).	674	Returns the "current time" (as per the event loop).
340		675
341	=item urxvt::CurrentTime	676	=item urxvt::CurrentTime
342		677
343	=item urxvt::ShiftMask, LockMask, ControlMask, Mod1Mask, Mod2Mask,	678	=item urxvt::ShiftMask, LockMask, ControlMask, Mod1Mask, Mod2Mask,
344	Mod3Mask, Mod4Mask, Mod5Mask, Button1Mask, Button2Mask, Button3Mask,	679	Mod3Mask, Mod4Mask, Mod5Mask, Button1Mask, Button2Mask, Button3Mask,
345	Button4Mask, Button5Mask, AnyModifier	680	Button4Mask, Button5Mask, AnyModifier
		681
		682	=item urxvt::NoEventMask, KeyPressMask, KeyReleaseMask,
		683	ButtonPressMask, ButtonReleaseMask, EnterWindowMask, LeaveWindowMask,
		684	PointerMotionMask, PointerMotionHintMask, Button1MotionMask, Button2MotionMask,
		685	Button3MotionMask, Button4MotionMask, Button5MotionMask, ButtonMotionMask,
		686	KeymapStateMask, ExposureMask, VisibilityChangeMask, StructureNotifyMask,
		687	ResizeRedirectMask, SubstructureNotifyMask, SubstructureRedirectMask,
		688	FocusChangeMask, PropertyChangeMask, ColormapChangeMask, OwnerGrabButtonMask
		689
		690	=item urxvt::KeyPress, KeyRelease, ButtonPress, ButtonRelease, MotionNotify,
		691	EnterNotify, LeaveNotify, FocusIn, FocusOut, KeymapNotify, Expose,
		692	GraphicsExpose, NoExpose, VisibilityNotify, CreateNotify, DestroyNotify,
		693	UnmapNotify, MapNotify, MapRequest, ReparentNotify, ConfigureNotify,
		694	ConfigureRequest, GravityNotify, ResizeRequest, CirculateNotify,
		695	CirculateRequest, PropertyNotify, SelectionClear, SelectionRequest,
		696	SelectionNotify, ColormapNotify, ClientMessage, MappingNotify
346		697
347	Various constants for use in X calls and event processing.	698	Various constants for use in X calls and event processing.
348		699
349	=back	700	=back
350		701
…		…
379		730
380	=item $background = urxvt::GET_BASEBG $rend	731	=item $background = urxvt::GET_BASEBG $rend
381		732
382	Return the foreground/background colour index, respectively.	733	Return the foreground/background colour index, respectively.
383		734
384	=item $rend = urxvt::SET_FGCOLOR ($rend, $new_colour)	735	=item $rend = urxvt::SET_FGCOLOR $rend, $new_colour
385		736
386	=item $rend = urxvt::SET_BGCOLOR ($rend, $new_colour)	737	=item $rend = urxvt::SET_BGCOLOR $rend, $new_colour
387		738
388	Replace the foreground/background colour in the rendition mask with the	739	Replace the foreground/background colour in the rendition mask with the
389	specified one.	740	specified one.
390		741
391	=item $value = urxvt::GET_CUSTOM ($rend)	742	=item $value = urxvt::GET_CUSTOM $rend
392		743
393	Return the "custom" value: Every rendition has 5 bits for use by	744	Return the "custom" value: Every rendition has 5 bits for use by
394	extensions. They can be set and changed as you like and are initially	745	extensions. They can be set and changed as you like and are initially
395	zero.	746	zero.
396		747
397	=item $rend = urxvt::SET_CUSTOM ($rend, $new_value)	748	=item $rend = urxvt::SET_CUSTOM $rend, $new_value
398		749
399	Change the custom value.	750	Change the custom value.
400		751
401	=back	752	=back
402		753
403	=cut	754	=cut
404		755
405	package urxvt;
406
407	use utf8;
408	use strict;
409	use Scalar::Util ();
410	use List::Util ();
411
412	our $VERSION = 1;
413	our $TERM;
414	our @HOOKNAME;
415	our %OPTION;
416	our $LIBDIR;
417
418	BEGIN {	756	BEGIN {
419	urxvt->bootstrap;
420
421	# overwrite perl's warn	757	# overwrite perl's warn
422	*CORE::GLOBAL::warn = sub {	758	*CORE::GLOBAL::warn = sub {
423	my $msg = join "", @_;	759	my $msg = join "", @_;
424	$msg .= "\n"	760	$msg .= "\n"
425	unless $msg =~ /\n$/;	761	unless $msg =~ /\n$/;
426	urxvt::warn ($msg);	762	urxvt::warn ($msg);
427	};	763	};
428	}	764	}
429		765
430	my @hook_count;	766	no warnings 'utf8';
		767
431	my $verbosity = $ENV{URXVT_PERL_VERBOSITY};	768	my $verbosity = $ENV{URXVT_PERL_VERBOSITY};
432		769
433	sub verbose {	770	sub verbose {
434	my ($level, $msg) = @_;	771	my ($level, $msg) = @_;
435	warn "$msg\n" if $level <= $verbosity;	772	warn "$msg\n" if $level <= $verbosity;
436	}	773	}
437		774
438	# find on_xxx subs in the package and register them
439	# as hooks
440	sub register_package($) {
441	my ($pkg) = @_;
442
443	for my $htype (0.. $#HOOKNAME) {
444	my $name = $HOOKNAME[$htype];
445
446	my $ref = $pkg->can ("on_" . lc $name)
447	or next;
448
449	$TERM->{_hook}[$htype]{$pkg} = $ref;
450	$hook_count[$htype]++
451	or set_should_invoke $htype, 1;
452	}
453	}
454
455	my $extension_pkg = "extension0000";
456	my %extension_pkg;	775	my %extension_pkg;
457		776
458	# load a single script into its own package, once only	777	# load a single script into its own package, once only
459	sub extension_package($) {	778	sub extension_package($) {
460	my ($path) = @_;	779	my ($path) = @_;
461		780
462	$extension_pkg{$path} ||= do {	781	$extension_pkg{$path} ||= do {
463	my $pkg = "urxvt::" . ($extension_pkg++);	782	$path =~ /([^\/\\]+)$/;
		783	my $pkg = $1;
		784	$pkg =~ s/[^[:word:]]/_/g;
		785	$pkg = "urxvt::ext::$pkg";
464		786
465	verbose 3, "loading extension '$path' into package '$pkg'";	787	verbose 3, "loading extension '$path' into package '$pkg'";
466		788
467	open my $fh, "<:raw", $path	789	open my $fh, "<:raw", $path
468	or die "$path: $!";	790	or die "$path: $!";
469		791
470	my $source = "package $pkg; use strict; use utf8;\n"	792	my $source =
471	. "use base urxvt::term::proxy::;\n"	793	"package $pkg; use strict; use utf8; no warnings 'utf8';\n"
472	. "#line 1 \"$path\"\n{\n"	794	. "#line 1 \"$path\"\n{\n"
473	. (do { local $/; <$fh> })	795	. (do { local $/; <$fh> })
474	. "\n};\n1";	796	. "\n};\n1";
475		797
476	$source =~ /(.*)/s and $source = $1; # untaint	798	eval $source
477
478	eval $source or die "$path: $@";	799	or die "$path: $@";
479		800
480	$pkg	801	$pkg
481	}	802	}
482	}	803	}
483		804
…		…
489	my $htype = shift;	810	my $htype = shift;
490		811
491	if ($htype == 0) { # INIT	812	if ($htype == 0) { # INIT
492	my @dirs = ((split /:/, $TERM->resource ("perl_lib")), "$LIBDIR/perl");	813	my @dirs = ((split /:/, $TERM->resource ("perl_lib")), "$LIBDIR/perl");
493		814
494	my %want_ext;	815	my %ext_arg;
495		816
		817	{
		818	my @init = @TERM_INIT;
		819	@TERM_INIT = ();
		820	$_->($TERM) for @init;
		821	my @pkg = @TERM_EXT;
		822	@TERM_EXT = ();
		823	$TERM->register_package ($_) for @pkg;
		824	}
		825
496	for (map { split /,/, $TERM->resource ("perl_ext_$_") } 1, 2) {	826	for (grep $_, map { split /,/, $TERM->resource ("perl_ext_$_") } 1, 2) {
497	if ($_ eq "default") {	827	if ($_ eq "default") {
498	$want_ext{$_}++ for qw(selection option-popup);	828	$ext_arg{$_} ||= [] for qw(selection option-popup selection-popup searchable-scrollback readline);
499	} elsif (/^-(.*)$/) {	829	} elsif (/^-(.*)$/) {
500	delete $want_ext{$1};	830	delete $ext_arg{$1};
		831	} elsif (/^([^<]+)<(.*)>$/) {
		832	push @{ $ext_arg{$1} }, $2;
501	} else {	833	} else {
502	$want_ext{$_}++;	834	$ext_arg{$_} ||= [];
503	}	835	}
504	}	836	}
505		837
506	for my $ext (keys %want_ext) {	838	while (my ($ext, $argv) = each %ext_arg) {
507	my @files = grep -f $_, map "$_/$ext", @dirs;	839	my @files = grep -f $_, map "$_/$ext", @dirs;
508		840
509	if (@files) {	841	if (@files) {
510	register_package extension_package $files[0];	842	$TERM->register_package (extension_package $files[0], $argv);
511	} else {	843	} else {
512	warn "perl extension '$ext' not found in perl library search path\n";	844	warn "perl extension '$ext' not found in perl library search path\n";
513	}	845	}
514	}	846	}
515		847
…		…
524	if $verbosity >= 10;	856	if $verbosity >= 10;
525		857
526	keys %$cb;	858	keys %$cb;
527		859
528	while (my ($pkg, $cb) = each %$cb) {	860	while (my ($pkg, $cb) = each %$cb) {
529	eval {	861	my $retval_ = eval { $cb->($TERM->{_pkg}{$pkg}, @_) };
530	$retval = $cb->(	862	$retval ||= $retval_;
531	$TERM->{_pkg}{$pkg} ||= do {	863
532	my $proxy = bless { }, $pkg;
533	Scalar::Util::weaken ($proxy->{term} = $TERM);
534	$proxy
535	},
536	@_,
537	) and last;
538	};
539	if ($@) {	864	if ($@) {
540	$TERM->ungrab; # better to lose the grab than the session	865	$TERM->ungrab; # better to lose the grab than the session
541	warn $@;	866	warn $@;
542	}	867	}
543	}	868	}
		869
		870	verbose 11, "$HOOKNAME[$htype] returning <$retval>"
		871	if $verbosity >= 11;
544	}	872	}
545		873
546	if ($htype == 1) { # DESTROY	874	if ($htype == 1) { # DESTROY
547	# remove hooks if unused
548	if (my $hook = $TERM->{_hook}) {
549	for my $htype (0..$#$hook) {
550	$hook_count[$htype] -= scalar keys %{ $hook->[$htype] || {} }
551	or set_should_invoke $htype, 0;
552	}
553	}
554
555	# clear package objects	875	# clear package objects
556	%$_ = () for values %{ $TERM->{_pkg} };	876	%$_ = () for values %{ $TERM->{_pkg} };
557		877
558	# clear package	878	# clear package
559	%$TERM = ();	879	%$TERM = ();
560	}	880	}
561		881
562	$retval	882	$retval
563	}	883	}
564		884
565	# urxvt::term::proxy	885	# urxvt::term::extension
566		886
567	sub urxvt::term::proxy::AUTOLOAD {	887	package urxvt::term::extension;
568	$urxvt::term::proxy::AUTOLOAD =~ /:([^:]+)$/	888
		889	sub enable {
		890	my ($self, %hook) = @_;
		891	my $pkg = $self->{_pkg};
		892
		893	while (my ($name, $cb) = each %hook) {
		894	my $htype = $HOOKTYPE{uc $name};
		895	defined $htype
		896	or Carp::croak "unsupported hook type '$name'";
		897
		898	$self->set_should_invoke ($htype, +1)
		899	unless exists $self->{term}{_hook}[$htype]{$pkg};
		900
		901	$self->{term}{_hook}[$htype]{$pkg} = $cb;
		902	}
		903	}
		904
		905	sub disable {
		906	my ($self, @hook) = @_;
		907	my $pkg = $self->{_pkg};
		908
		909	for my $name (@hook) {
		910	my $htype = $HOOKTYPE{uc $name};
		911	defined $htype
		912	or Carp::croak "unsupported hook type '$name'";
		913
		914	$self->set_should_invoke ($htype, -1)
		915	if delete $self->{term}{_hook}[$htype]{$pkg};
		916	}
		917	}
		918
		919	our $AUTOLOAD;
		920
		921	sub AUTOLOAD {
		922	$AUTOLOAD =~ /:([^:]+)$/
569	or die "FATAL: \$AUTOLOAD '$urxvt::term::proxy::AUTOLOAD' unparsable";	923	or die "FATAL: \$AUTOLOAD '$AUTOLOAD' unparsable";
570		924
571	eval qq{	925	eval qq{
572	sub $urxvt::term::proxy::AUTOLOAD {	926	sub $AUTOLOAD {
573	my \$proxy = shift;	927	my \$proxy = shift;
574	\$proxy->{term}->$1 (\@_)	928	\$proxy->{term}->$1 (\@_)
575	}	929	}
576	1	930	1
577	} or die "FATAL: unable to compile method forwarder: $@";	931	} or die "FATAL: unable to compile method forwarder: $@";
578		932
579	goto &$urxvt::term::proxy::AUTOLOAD;	933	goto &$AUTOLOAD;
580	}	934	}
581		935
582	sub urxvt::term::proxy::DESTROY {	936	sub DESTROY {
583	# nop	937	# nop
584	}	938	}
585		939
586	# urxvt::destroy_hook	940	# urxvt::destroy_hook
587		941
…		…
597		951
598	=head2 The C<urxvt::anyevent> Class	952	=head2 The C<urxvt::anyevent> Class
599		953
600	The sole purpose of this class is to deliver an interface to the	954	The sole purpose of this class is to deliver an interface to the
601	C<AnyEvent> module - any module using it will work inside urxvt without	955	C<AnyEvent> module - any module using it will work inside urxvt without
602	further work. The only exception is that you cannot wait on condition	956	further programming. The only exception is that you cannot wait on
603	variables, but non-blocking condvar use is ok. What this means is that you	957	condition variables, but non-blocking condvar use is ok. What this means
604	cannot use blocking APIs, but the non-blocking variant should work.	958	is that you cannot use blocking APIs, but the non-blocking variant should
		959	work.
605		960
606	=cut	961	=cut
607		962
608	our $VERSION = 1;	963	our $VERSION = 1;
609		964
…		…
654	${$_[0]}++;	1009	${$_[0]}++;
655	}	1010	}
656		1011
657	sub urxvt::anyevent::condvar::wait {	1012	sub urxvt::anyevent::condvar::wait {
658	unless (${$_[0]}) {	1013	unless (${$_[0]}) {
659	require Carp;
660	Carp::croak ("AnyEvent->condvar blocking wait unsupported in urxvt, use a non-blocking API");	1014	Carp::croak "AnyEvent->condvar blocking wait unsupported in urxvt, use a non-blocking API";
661	}	1015	}
662	}	1016	}
663		1017
664	package urxvt::term;	1018	package urxvt::term;
665		1019
666	=head2 The C<urxvt::term> Class	1020	=head2 The C<urxvt::term> Class
667		1021
668	=over 4	1022	=over 4
669		1023
		1024	=cut
		1025
		1026	# find on_xxx subs in the package and register them
		1027	# as hooks
		1028	sub register_package {
		1029	my ($self, $pkg, $argv) = @_;
		1030
		1031	no strict 'refs';
		1032
		1033	urxvt::verbose 6, "register package $pkg to $self";
		1034
		1035	@{"$pkg\::ISA"} = urxvt::term::extension::;
		1036
		1037	my $proxy = bless {
		1038	_pkg => $pkg,
		1039	argv => $argv,
		1040	}, $pkg;
		1041	Scalar::Util::weaken ($proxy->{term} = $self);
		1042
		1043	$self->{_pkg}{$pkg} = $proxy;
		1044
		1045	for my $name (@HOOKNAME) {
		1046	if (my $ref = $pkg->can ("on_" . lc $name)) {
		1047	$proxy->enable ($name => $ref);
		1048	}
		1049	}
		1050	}
		1051
		1052	=item $term = new urxvt::term $envhashref, $rxvtname, [arg...]
		1053
		1054	Creates a new terminal, very similar as if you had started it with system
		1055	C<$rxvtname, arg...>. C<$envhashref> must be a reference to a C<%ENV>-like
		1056	hash which defines the environment of the new terminal.
		1057
		1058	Croaks (and probably outputs an error message) if the new instance
		1059	couldn't be created. Returns C<undef> if the new instance didn't
		1060	initialise perl, and the terminal object otherwise. The C<init> and
		1061	C<start> hooks will be called during this call.
		1062
		1063	=cut
		1064
		1065	sub new {
		1066	my ($class, $env, @args) = @_;
		1067
		1068	_new ([ map "$_=$env->{$_}", keys %$env ], @args);
		1069	}
		1070
670	=item $term->destroy	1071	=item $term->destroy
671		1072
672	Destroy the terminal object (close the window, free resources etc.).	1073	Destroy the terminal object (close the window, free resources
		1074	etc.). Please note that @@RXVT_NAME@@ will not exit as long as any event
		1075	watchers (timers, io watchers) are still active.
		1076
		1077	=item $term->exec_async ($cmd[, @args])
		1078
		1079	Works like the combination of the C<fork>/C<exec> builtins, which executes
		1080	("starts") programs in the background. This function takes care of setting
		1081	the user environment before exec'ing the command (e.g. C<PATH>) and should
		1082	be preferred over explicit calls to C<exec> or C<system>.
		1083
		1084	Returns the pid of the subprocess or C<undef> on error.
		1085
		1086	=cut
		1087
		1088	sub exec_async {
		1089	my $self = shift;
		1090
		1091	my $pid = fork;
		1092
		1093	return $pid
		1094	if !defined $pid or $pid;
		1095
		1096	%ENV = %{ $self->env };
		1097
		1098	exec @_;
		1099	urxvt::_exit 255;
		1100	}
673		1101
674	=item $isset = $term->option ($optval[, $set])	1102	=item $isset = $term->option ($optval[, $set])
675		1103
676	Returns true if the option specified by C<$optval> is enabled, and	1104	Returns true if the option specified by C<$optval> is enabled, and
677	optionally change it. All option values are stored by name in the hash	1105	optionally change it. All option values are stored by name in the hash
…		…
680	Here is a a likely non-exhaustive list of option names, please see the	1108	Here is a a likely non-exhaustive list of option names, please see the
681	source file F</src/optinc.h> to see the actual list:	1109	source file F</src/optinc.h> to see the actual list:
682		1110
683	borderLess console cursorBlink cursorUnderline hold iconic insecure	1111	borderLess console cursorBlink cursorUnderline hold iconic insecure
684	intensityStyles jumpScroll loginShell mapAlert meta8 mouseWheelScrollPage	1112	intensityStyles jumpScroll loginShell mapAlert meta8 mouseWheelScrollPage
685	pastableTabs pointerBlank reverseVideo scrollBar scrollBar_floating	1113	override-redirect pastableTabs pointerBlank reverseVideo scrollBar
686	scrollBar_right scrollTtyKeypress scrollTtyOutput scrollWithBuffer	1114	scrollBar_floating scrollBar_right scrollTtyKeypress scrollTtyOutput
687	secondaryScreen secondaryScroll skipBuiltinGlyphs transparent	1115	scrollWithBuffer secondaryScreen secondaryScroll skipBuiltinGlyphs
688	tripleclickwords utmpInhibit visualBell	1116	transparent tripleclickwords utmpInhibit visualBell
689		1117
690	=item $value = $term->resource ($name[, $newval])	1118	=item $value = $term->resource ($name[, $newval])
691		1119
692	Returns the current resource value associated with a given name and	1120	Returns the current resource value associated with a given name and
693	optionally sets a new value. Setting values is most useful in the C<init>	1121	optionally sets a new value. Setting values is most useful in the C<init>
…		…
710		1138
711	answerbackstring backgroundPixmap backspace_key boldFont boldItalicFont	1139	answerbackstring backgroundPixmap backspace_key boldFont boldItalicFont
712	borderLess color cursorBlink cursorUnderline cutchars delete_key	1140	borderLess color cursorBlink cursorUnderline cutchars delete_key
713	display_name embed ext_bwidth fade font geometry hold iconName	1141	display_name embed ext_bwidth fade font geometry hold iconName
714	imFont imLocale inputMethod insecure int_bwidth intensityStyles	1142	imFont imLocale inputMethod insecure int_bwidth intensityStyles
715	italicFont jumpScroll lineSpace loginShell mapAlert menu meta8 modifier	1143	italicFont jumpScroll lineSpace loginShell mapAlert meta8 modifier
716	mouseWheelScrollPage name pastableTabs path perl_eval perl_ext_1 perl_ext_2	1144	mouseWheelScrollPage name override_redirect pastableTabs path perl_eval
717	perl_lib pointerBlank pointerBlankDelay preeditType print_pipe pty_fd	1145	perl_ext_1 perl_ext_2 perl_lib pointerBlank pointerBlankDelay
718	reverseVideo saveLines scrollBar scrollBar_align scrollBar_floating	1146	preeditType print_pipe pty_fd reverseVideo saveLines scrollBar
719	scrollBar_right scrollBar_thickness scrollTtyKeypress scrollTtyOutput	1147	scrollBar_align scrollBar_floating scrollBar_right scrollBar_thickness
720	scrollWithBuffer scrollstyle secondaryScreen secondaryScroll selectstyle	1148	scrollTtyKeypress scrollTtyOutput scrollWithBuffer scrollstyle
721	shade term_name title transparent transparent_all tripleclickwords	1149	secondaryScreen secondaryScroll selectstyle shade term_name title
722	utmpInhibit visualBell	1150	transient_for transparent transparent_all tripleclickwords utmpInhibit
		1151	visualBell
723		1152
724	=cut	1153	=cut
725		1154
726	sub resource($$;$) {	1155	sub resource($$;$) {
727	my ($self, $name) = (shift, shift);	1156	my ($self, $name) = (shift, shift);
728	unshift @_, $self, $name, ($name =~ s/\s*\+\s*(\d+)$// ? $1 : 0);	1157	unshift @_, $self, $name, ($name =~ s/\s*\+\s*(\d+)$// ? $1 : 0);
729	&urxvt::term::_resource	1158	&urxvt::term::_resource
730	}	1159	}
731		1160
		1161	=item $value = $term->x_resource ($pattern)
		1162
		1163	Returns the X-Resource for the given pattern, excluding the program or
		1164	class name, i.e. C<< $term->x_resource ("boldFont") >> should return the
		1165	same value as used by this instance of rxvt-unicode. Returns C<undef> if no
		1166	resource with that pattern exists.
		1167
		1168	This method should only be called during the C<on_start> hook, as there is
		1169	only one resource database per display, and later invocations might return
		1170	the wrong resources.
		1171
		1172	=item $success = $term->parse_keysym ($keysym_spec, $command_string)
		1173
		1174	Adds a keymap translation exactly as specified via a resource. See the
		1175	C<keysym> resource in the @@RXVT_NAME@@(1) manpage.
		1176
732	=item $rend = $term->rstyle ([$new_rstyle])	1177	=item $rend = $term->rstyle ([$new_rstyle])
733		1178
734	Return and optionally change the current rendition. Text that is output by	1179	Return and optionally change the current rendition. Text that is output by
735	the terminal application will use this style.	1180	the terminal application will use this style.
736		1181
…		…
746	=item ($row, $col) = $term->selection_end ([$row, $col])	1191	=item ($row, $col) = $term->selection_end ([$row, $col])
747		1192
748	Return the current values of the selection mark, begin or end positions,	1193	Return the current values of the selection mark, begin or end positions,
749	and optionally set them to new values.	1194	and optionally set them to new values.
750		1195
		1196	=item $term->selection_make ($eventtime[, $rectangular])
		1197
		1198	Tries to make a selection as set by C<selection_beg> and
		1199	C<selection_end>. If C<$rectangular> is true (default: false), a
		1200	rectangular selection will be made. This is the prefered function to make
		1201	a selection.
		1202
751	=item $success = $term->selection_grab ($eventtime)	1203	=item $success = $term->selection_grab ($eventtime)
752		1204
753	Try to request the primary selection from the server (for example, as set	1205	Try to request the primary selection text from the server (for example, as
754	by the next method).	1206	set by the next method). No visual feedback will be given. This function
		1207	is mostly useful from within C<on_sel_grab> hooks.
755		1208
756	=item $oldtext = $term->selection ([$newtext])	1209	=item $oldtext = $term->selection ([$newtext])
757		1210
758	Return the current selection text and optionally replace it by C<$newtext>.	1211	Return the current selection text and optionally replace it by C<$newtext>.
759		1212
760	#=item $term->overlay ($x, $y, $text)	1213	=item $term->overlay_simple ($x, $y, $text)
761	#	1214
762	#Create a simple multi-line overlay box. See the next method for details.	1215	Create a simple multi-line overlay box. See the next method for details.
763	#	1216
764	#=cut	1217	=cut
765	#	1218
766	#sub urxvt::term::scr_overlay {	1219	sub overlay_simple {
767	# my ($self, $x, $y, $text) = @_;	1220	my ($self, $x, $y, $text) = @_;
768	#	1221
769	# my @lines = split /\n/, $text;	1222	my @lines = split /\n/, $text;
770	#	1223
771	# my $w = 0;	1224	my $w = List::Util::max map $self->strwidth ($_), @lines;
772	# for (map $self->strwidth ($_), @lines) {	1225
773	# $w = $_ if $w < $_;
774	# }
775	#
776	# $self->scr_overlay_new ($x, $y, $w, scalar @lines);	1226	my $overlay = $self->overlay ($x, $y, $w, scalar @lines);
777	# $self->scr_overlay_set (0, $_, $lines[$_]) for 0.. $#lines;	1227	$overlay->set (0, $_, $lines[$_]) for 0.. $#lines;
778	#}	1228
		1229	$overlay
		1230	}
779		1231
780	=item $term->overlay ($x, $y, $width, $height[, $rstyle[, $border]])	1232	=item $term->overlay ($x, $y, $width, $height[, $rstyle[, $border]])
781		1233
782	Create a new (empty) overlay at the given position with the given	1234	Create a new (empty) overlay at the given position with the given
783	width/height. C<$rstyle> defines the initial rendition style	1235	width/height. C<$rstyle> defines the initial rendition style
…		…
850		1302
851	=item $string = $term->locale_decode ($octets)	1303	=item $string = $term->locale_decode ($octets)
852		1304
853	Convert the given locale-encoded octets into a perl string.	1305	Convert the given locale-encoded octets into a perl string.
854		1306
		1307	=item $term->scr_xor_span ($beg_row, $beg_col, $end_row, $end_col[, $rstyle])
		1308
		1309	XORs the rendition values in the given span with the provided value
		1310	(default: C<RS_RVid>), which I<MUST NOT> contain font styles. Useful in
		1311	refresh hooks to provide effects similar to the selection.
		1312
		1313	=item $term->scr_xor_rect ($beg_row, $beg_col, $end_row, $end_col[, $rstyle1[, $rstyle2]])
		1314
		1315	Similar to C<scr_xor_span>, but xors a rectangle instead. Trailing
		1316	whitespace will additionally be xored with the C<$rstyle2>, which defaults
		1317	to C<RS_RVid | RS_Uline>, which removes reverse video again and underlines
		1318	it instead. Both styles I<MUST NOT> contain font styles.
		1319
		1320	=item $term->scr_bell
		1321
		1322	Ring the bell!
		1323
855	=item $term->scr_add_lines ($string)	1324	=item $term->scr_add_lines ($string)
856		1325
857	Write the given text string to the screen, as if output by the application	1326	Write the given text string to the screen, as if output by the application
858	running inside the terminal. It may not contain command sequences (escape	1327	running inside the terminal. It may not contain command sequences (escape
859	codes), but is free to use line feeds, carriage returns and tabs. The	1328	codes), but is free to use line feeds, carriage returns and tabs. The
…		…
861		1330
862	Normally its not a good idea to use this function, as programs might be	1331	Normally its not a good idea to use this function, as programs might be
863	confused by changes in cursor position or scrolling. Its useful inside a	1332	confused by changes in cursor position or scrolling. Its useful inside a
864	C<on_add_lines> hook, though.	1333	C<on_add_lines> hook, though.
865		1334
		1335	=item $term->scr_change_screen ($screen)
		1336
		1337	Switch to given screen - 0 primary, 1 secondary.
		1338
866	=item $term->cmd_parse ($octets)	1339	=item $term->cmd_parse ($octets)
867		1340
868	Similar to C<scr_add_lines>, but the argument must be in the	1341	Similar to C<scr_add_lines>, but the argument must be in the
869	locale-specific encoding of the terminal and can contain command sequences	1342	locale-specific encoding of the terminal and can contain command sequences
870	(escape codes) that will be interpreted.	1343	(escape codes) that will be interpreted.
…		…
873		1346
874	Write the octets given in C<$data> to the tty (i.e. as program input). To	1347	Write the octets given in C<$data> to the tty (i.e. as program input). To
875	pass characters instead of octets, you should convert your strings first	1348	pass characters instead of octets, you should convert your strings first
876	to the locale-specific encoding using C<< $term->locale_encode >>.	1349	to the locale-specific encoding using C<< $term->locale_encode >>.
877		1350
		1351	=item $old_events = $term->pty_ev_events ([$new_events])
		1352
		1353	Replaces the event mask of the pty watcher by the given event mask. Can
		1354	be used to suppress input and output handling to the pty/tty. See the
		1355	description of C<< urxvt::timer->events >>. Make sure to always restore
		1356	the previous value.
		1357
		1358	=item $fd = $term->pty_fd
		1359
		1360	Returns the master file descriptor for the pty in use, or C<-1> if no pty
		1361	is used.
		1362
878	=item $windowid = $term->parent	1363	=item $windowid = $term->parent
879		1364
880	Return the window id of the toplevel window.	1365	Return the window id of the toplevel window.
881		1366
882	=item $windowid = $term->vt	1367	=item $windowid = $term->vt
883		1368
884	Return the window id of the terminal window.	1369	Return the window id of the terminal window.
885		1370
		1371	=item $term->vt_emask_add ($x_event_mask)
		1372
		1373	Adds the specified events to the vt event mask. Useful e.g. when you want
		1374	to receive pointer events all the times:
		1375
		1376	$term->vt_emask_add (urxvt::PointerMotionMask);
		1377
886	=item $window_width = $term->width	1378	=item $window_width = $term->width
887		1379
888	=item $window_height = $term->height	1380	=item $window_height = $term->height
889		1381
890	=item $font_width = $term->fwidth	1382	=item $font_width = $term->fwidth
…		…
903		1395
904	=item $max_scrollback = $term->saveLines	1396	=item $max_scrollback = $term->saveLines
905		1397
906	=item $nrow_plus_saveLines = $term->total_rows	1398	=item $nrow_plus_saveLines = $term->total_rows
907		1399
908	=item $lines_in_scrollback = $term->nsaved	1400	=item $topmost_scrollback_row = $term->top_row
909		1401
910	Return various integers describing terminal characteristics.	1402	Return various integers describing terminal characteristics.
		1403
		1404	=item $x_display = $term->display_id
		1405
		1406	Return the DISPLAY used by rxvt-unicode.
		1407
		1408	=item $lc_ctype = $term->locale
		1409
		1410	Returns the LC_CTYPE category string used by this rxvt-unicode.
		1411
		1412	=item $env = $term->env
		1413
		1414	Returns a copy of the environment in effect for the terminal as a hashref
		1415	similar to C<\%ENV>.
		1416
		1417	=cut
		1418
		1419	sub env {
		1420	if (my $env = $_[0]->_env) {
		1421	+{ map /^([^=]+)(?:=(.*))?$/s && ($1 => $2), @$env }
		1422	} else {
		1423	+{ %ENV }
		1424	}
		1425	}
911		1426
912	=item $modifiermask = $term->ModLevel3Mask	1427	=item $modifiermask = $term->ModLevel3Mask
913		1428
914	=item $modifiermask = $term->ModMetaMask	1429	=item $modifiermask = $term->ModMetaMask
915		1430
916	=item $modifiermask = $term->ModNumLockMask	1431	=item $modifiermask = $term->ModNumLockMask
917		1432
918	Return the modifier masks corresponding to the "ISO Level 3 Shift" (often	1433	Return the modifier masks corresponding to the "ISO Level 3 Shift" (often
919	AltGr), the meta key (often Alt) and the num lock key, if applicable.	1434	AltGr), the meta key (often Alt) and the num lock key, if applicable.
920		1435
		1436	=item $screen = $term->current_screen
		1437
		1438	Returns the currently displayed screen (0 primary, 1 secondary).
		1439
		1440	=item $cursor_is_hidden = $term->hidden_cursor
		1441
		1442	Returns wether the cursor is currently hidden or not.
		1443
921	=item $view_start = $term->view_start ([$newvalue])	1444	=item $view_start = $term->view_start ([$newvalue])
922		1445
923	Returns the negative row number of the topmost line. Minimum value is	1446	Returns the row number of the topmost displayed line. Maximum value is
924	C<0>, which displays the normal terminal contents. Larger values scroll	1447	C<0>, which displays the normal terminal contents. Lower values scroll
925	this many lines into the scrollback buffer.	1448	this many lines into the scrollback buffer.
926		1449
927	=item $term->want_refresh	1450	=item $term->want_refresh
928		1451
929	Requests a screen refresh. At the next opportunity, rxvt-unicode will	1452	Requests a screen refresh. At the next opportunity, rxvt-unicode will
…		…
944	line, starting at column C<$start_col> (default C<0>), which is useful	1467	line, starting at column C<$start_col> (default C<0>), which is useful
945	to replace only parts of a line. The font index in the rendition will	1468	to replace only parts of a line. The font index in the rendition will
946	automatically be updated.	1469	automatically be updated.
947		1470
948	C<$text> is in a special encoding: tabs and wide characters that use more	1471	C<$text> is in a special encoding: tabs and wide characters that use more
949	than one cell when displayed are padded with urxvt::NOCHAR characters	1472	than one cell when displayed are padded with C<$urxvt::NOCHAR> (chr 65535)
950	(C<chr 65535>). Characters with combining characters and other characters	1473	characters. Characters with combining characters and other characters that
951	that do not fit into the normal tetx encoding will be replaced with	1474	do not fit into the normal tetx encoding will be replaced with characters
952	characters in the private use area.	1475	in the private use area.
953		1476
954	You have to obey this encoding when changing text. The advantage is	1477	You have to obey this encoding when changing text. The advantage is
955	that C<substr> and similar functions work on screen cells and not on	1478	that C<substr> and similar functions work on screen cells and not on
956	characters.	1479	characters.
957		1480
…		…
1008	Return the row number of the first/last row of the line, respectively.	1531	Return the row number of the first/last row of the line, respectively.
1009		1532
1010	=item $offset = $line->offset_of ($row, $col)	1533	=item $offset = $line->offset_of ($row, $col)
1011		1534
1012	Returns the character offset of the given row|col pair within the logical	1535	Returns the character offset of the given row|col pair within the logical
1013	line.	1536	line. Works for rows outside the line, too, and returns corresponding
		1537	offsets outside the string.
1014		1538
1015	=item ($row, $col) = $line->coord_of ($offset)	1539	=item ($row, $col) = $line->coord_of ($offset)
1016		1540
1017	Translates a string offset into terminal coordinates again.	1541	Translates a string offset into terminal coordinates again.
1018		1542
…		…
1092	$offset / $self->{ncol} + $self->{beg},	1616	$offset / $self->{ncol} + $self->{beg},
1093	$offset % $self->{ncol}	1617	$offset % $self->{ncol}
1094	)	1618	)
1095	}	1619	}
1096		1620
1097	=item ($row, $col) = $line->coord_of ($offset)
1098	=item $text = $term->special_encode $string	1621	=item $text = $term->special_encode $string
1099		1622
1100	Converts a perl string into the special encoding used by rxvt-unicode,	1623	Converts a perl string into the special encoding used by rxvt-unicode,
1101	where one character corresponds to one screen cell. See	1624	where one character corresponds to one screen cell. See
1102	C<< $term->ROW_t >> for details.	1625	C<< $term->ROW_t >> for details.
…		…
1104	=item $string = $term->special_decode $text	1627	=item $string = $term->special_decode $text
1105		1628
1106	Converts rxvt-unicodes text reprsentation into a perl string. See	1629	Converts rxvt-unicodes text reprsentation into a perl string. See
1107	C<< $term->ROW_t >> for details.	1630	C<< $term->ROW_t >> for details.
1108		1631
		1632	=item $success = $term->grab_button ($button, $modifiermask)
		1633
		1634	Registers a synchronous button grab. See the XGrabButton manpage.
		1635
		1636	=item $success = $term->grab ($eventtime[, $sync])
		1637
		1638	Calls XGrabPointer and XGrabKeyboard in asynchronous (default) or
		1639	synchronous (C<$sync> is true). Also remembers the grab timestampe.
		1640
		1641	=item $term->allow_events_async
		1642
		1643	Calls XAllowEvents with AsyncBoth for the most recent grab.
		1644
		1645	=item $term->allow_events_sync
		1646
		1647	Calls XAllowEvents with SyncBoth for the most recent grab.
		1648
		1649	=item $term->allow_events_replay
		1650
		1651	Calls XAllowEvents with both ReplayPointer and ReplayKeyboard for the most
		1652	recent grab.
		1653
		1654	=item $term->ungrab
		1655
		1656	Calls XUngrab for the most recent grab. Is called automatically on
		1657	evaluation errors, as it is better to lose the grab in the error case as
		1658	the session.
		1659
		1660	=item $atom = $term->XInternAtom ($atom_name[, $only_if_exists])
		1661
		1662	=item $atom_name = $term->XGetAtomName ($atom)
		1663
		1664	=item @atoms = $term->XListProperties ($window)
		1665
		1666	=item ($type,$format,$octets) = $term->XGetWindowProperty ($window, $property)
		1667
		1668	=item $term->XChangeWindowProperty ($window, $property, $type, $format, $octets)
		1669
		1670	=item $term->XDeleteProperty ($window, $property)
		1671
		1672	=item $window = $term->DefaultRootWindow
		1673
		1674	=item $term->XReparentWindow ($window, $parent, [$x, $y])
		1675
		1676	=item $term->XMapWindow ($window)
		1677
		1678	=item $term->XUnmapWindow ($window)
		1679
		1680	=item $term->XMoveResizeWindow ($window, $x, $y, $width, $height)
		1681
		1682	=item ($x, $y, $child_window) = $term->XTranslateCoordinates ($src, $dst, $x, $y)
		1683
		1684	=item $term->XChangeInput ($window, $add_events[, $del_events])
		1685
		1686	Various X or X-related functions. The C<$term> object only serves as
		1687	the source of the display, otherwise those functions map more-or-less
		1688	directory onto the X functions of the same name.
		1689
1109	=back	1690	=back
1110		1691
1111	=cut	1692	=cut
1112		1693
1113	package urxvt::popup;	1694	package urxvt::popup;
…		…
1128	$item->{render} ||= sub { $_[0]{text} };	1709	$item->{render} ||= sub { $_[0]{text} };
1129		1710
1130	push @{ $self->{item} }, $item;	1711	push @{ $self->{item} }, $item;
1131	}	1712	}
1132		1713
1133	sub add_separator {	1714	=item $popup->add_title ($title)
1134	my ($self, $sep) = @_;
1135		1715
1136	$sep ||= "═";	1716	Adds a non-clickable title to the popup.
1137		1717
1138	$self->add_item ({	1718	=cut
1139	rend => { normal => "\x1b[0;30;47m", hover => "\x1b[0;30;47m", active => "\x1b[0;30;47m" },
1140	text => "",
1141	render => sub { $sep x $urxvt::TERM->ncol },
1142	activate => sub { },
1143	});
1144	}
1145		1719
1146	sub add_title {	1720	sub add_title {
1147	my ($self, $title) = @_;	1721	my ($self, $title) = @_;
1148		1722
1149	$self->add_item ({	1723	$self->add_item ({
…		…
1151	text => $title,	1725	text => $title,
1152	activate => sub { },	1726	activate => sub { },
1153	});	1727	});
1154	}	1728	}
1155		1729
		1730	=item $popup->add_separator ([$sepchr])
		1731
		1732	Creates a separator, optionally using the character given as C<$sepchr>.
		1733
		1734	=cut
		1735
		1736	sub add_separator {
		1737	my ($self, $sep) = @_;
		1738
		1739	$sep ||= "=";
		1740
		1741	$self->add_item ({
		1742	rend => { normal => "\x1b[0;30;47m", hover => "\x1b[0;30;47m", active => "\x1b[0;30;47m" },
		1743	text => "",
		1744	render => sub { $sep x $self->{term}->ncol },
		1745	activate => sub { },
		1746	});
		1747	}
		1748
		1749	=item $popup->add_button ($text, $cb)
		1750
		1751	Adds a clickable button to the popup. C<$cb> is called whenever it is
		1752	selected.
		1753
		1754	=cut
		1755
1156	sub add_button {	1756	sub add_button {
1157	my ($self, $text, $cb) = @_;	1757	my ($self, $text, $cb) = @_;
1158		1758
1159	$self->add_item ({ type => "button", text => "[ $text ]", activate => $cb});	1759	$self->add_item ({ type => "button", text => $text, activate => $cb});
1160	}	1760	}
		1761
		1762	=item $popup->add_toggle ($text, $cb, $initial_value)
		1763
		1764	Adds a toggle/checkbox item to the popup. Teh callback gets called
		1765	whenever it gets toggled, with a boolean indicating its value as its first
		1766	argument.
		1767
		1768	=cut
1161		1769
1162	sub add_toggle {	1770	sub add_toggle {
1163	my ($self, $text, $cb, $value) = @_;	1771	my ($self, $text, $cb, $value) = @_;
1164		1772
1165	my $item; $item = {	1773	my $item; $item = {
1166	type => "button",	1774	type => "button",
1167	text => " $text",	1775	text => " $text",
1168	value => $value,	1776	value => $value,
1169	render => sub { ($_[0]{value} ? "* " : " ") . $text },	1777	render => sub { ($_[0]{value} ? "* " : " ") . $text },
1170	activate => sub { $cb->($_[0]{value} = !$_[0]{value}); },	1778	activate => sub { $cb->($_[1]{value} = !$_[1]{value}); },
1171	};	1779	};
1172		1780
1173	$self->add_item ($item);	1781	$self->add_item ($item);
1174	}	1782	}
		1783
		1784	=item $popup->show
		1785
		1786	Displays the popup (which is initially hidden).
		1787
		1788	=cut
1175		1789
1176	sub show {	1790	sub show {
1177	my ($self) = @_;	1791	my ($self) = @_;
1178		1792
1179	local $urxvt::popup::self = $self;	1793	local $urxvt::popup::self = $self;
1180		1794
1181	urxvt->new ("--perl-lib" => "", "--perl-ext-common" => "", "-pty-fd" => -1, "-sl" => 0, "-b" => 0,	1795	my $env = $self->{term}->env;
		1796	# we can't hope to reproduce the locale algorithm, so nuke LC_ALL and set LC_CTYPE.
		1797	delete $env->{LC_ALL};
		1798	$env->{LC_CTYPE} = $self->{term}->locale;
		1799
		1800	urxvt::term->new ($env, "popup",
		1801	"--perl-lib" => "", "--perl-ext-common" => "",
		1802	"-pty-fd" => -1, "-sl" => 0,
		1803	"-b" => 1, "-bd" => "grey80", "-bl", "-override-redirect",
1182	"--transient-for" => $self->{term}->parent,	1804	"--transient-for" => $self->{term}->parent,
		1805	"-display" => $self->{term}->display_id,
1183	"-pe" => "urxvt-popup")	1806	"-pe" => "urxvt-popup")
1184	or die "unable to create popup window\n";	1807	or die "unable to create popup window\n";
1185	}	1808	}
1186		1809
1187	sub DESTROY {	1810	sub DESTROY {
1188	my ($self) = @_;	1811	my ($self) = @_;
1189		1812
1190	delete $self->{term}{_destroy}{$self};	1813	delete $self->{term}{_destroy}{$self};
1191	$self->{term}->ungrab;	1814	$self->{term}->ungrab;
1192	}	1815	}
		1816
		1817	=back
		1818
		1819	=cut
		1820
		1821	package urxvt::watcher;
		1822
		1823	@urxvt::timer::ISA = __PACKAGE__;
		1824	@urxvt::iow::ISA = __PACKAGE__;
		1825	@urxvt::pw::ISA = __PACKAGE__;
		1826	@urxvt::iw::ISA = __PACKAGE__;
1193		1827
1194	=head2 The C<urxvt::timer> Class	1828	=head2 The C<urxvt::timer> Class
1195		1829
1196	This class implements timer watchers/events. Time is represented as a	1830	This class implements timer watchers/events. Time is represented as a
1197	fractional number of seconds since the epoch. Example:	1831	fractional number of seconds since the epoch. Example:
…		…
1236		1870
1237	=item $timer = $timer->start ($tstamp)	1871	=item $timer = $timer->start ($tstamp)
1238		1872
1239	Set the event trigger time to C<$tstamp> and start the timer.	1873	Set the event trigger time to C<$tstamp> and start the timer.
1240		1874
		1875	=item $timer = $timer->after ($delay)
		1876
		1877	Like C<start>, but sets the expiry timer to c<urxvt::NOW + $delay>.
		1878
1241	=item $timer = $timer->stop	1879	=item $timer = $timer->stop
1242		1880
1243	Stop the timer.	1881	Stop the timer.
1244		1882
1245	=back	1883	=back
…		…
1250		1888
1251	$term->{socket} = ...	1889	$term->{socket} = ...
1252	$term->{iow} = urxvt::iow	1890	$term->{iow} = urxvt::iow
1253	->new	1891	->new
1254	->fd (fileno $term->{socket})	1892	->fd (fileno $term->{socket})
1255	->events (1) # wait for read data	1893	->events (urxvt::EVENT_READ)
1256	->start	1894	->start
1257	->cb (sub {	1895	->cb (sub {
1258	my ($iow, $revents) = @_;	1896	my ($iow, $revents) = @_;
1259	# $revents must be 1 here, no need to check	1897	# $revents must be 1 here, no need to check
1260	sysread $term->{socket}, my $buf, 8192	1898	sysread $term->{socket}, my $buf, 8192
…		…
1277		1915
1278	Set the filedescriptor (not handle) to watch.	1916	Set the filedescriptor (not handle) to watch.
1279		1917
1280	=item $iow = $iow->events ($eventmask)	1918	=item $iow = $iow->events ($eventmask)
1281		1919
1282	Set the event mask to watch. Bit #0 (value C<1>) enables watching for read	1920	Set the event mask to watch. The only allowed values are
1283	data, Bit #1 (value C<2>) enables watching for write data.	1921	C<urxvt::EVENT_READ> and C<urxvt::EVENT_WRITE>, which might be ORed
		1922	together, or C<urxvt::EVENT_NONE>.
1284		1923
1285	=item $iow = $iow->start	1924	=item $iow = $iow->start
1286		1925
1287	Start watching for requested events on the given handle.	1926	Start watching for requested events on the given handle.
1288		1927
1289	=item $iow = $iow->stop	1928	=item $iow = $iow->stop
1290		1929
1291	Stop watching for events on the given filehandle.	1930	Stop watching for events on the given filehandle.
		1931
		1932	=back
		1933
		1934	=head2 The C<urxvt::iw> Class
		1935
		1936	This class implements idle watchers, that get called automatically when
		1937	the process is idle. They should return as fast as possible, after doing
		1938	some useful work.
		1939
		1940	=over 4
		1941
		1942	=item $iw = new urxvt::iw
		1943
		1944	Create a new idle watcher object in stopped state.
		1945
		1946	=item $iw = $iw->cb (sub { my ($iw) = @_; ... })
		1947
		1948	Set the callback to be called when the watcher triggers.
		1949
		1950	=item $timer = $timer->start
		1951
		1952	Start the watcher.
		1953
		1954	=item $timer = $timer->stop
		1955
		1956	Stop the watcher.
		1957
		1958	=back
		1959
		1960	=head2 The C<urxvt::pw> Class
		1961
		1962	This class implements process watchers. They create an event whenever a
		1963	process exits, after which they stop automatically.
		1964
		1965	my $pid = fork;
		1966	...
		1967	$term->{pw} = urxvt::pw
		1968	->new
		1969	->start ($pid)
		1970	->cb (sub {
		1971	my ($pw, $exit_status) = @_;
		1972	...
		1973	});
		1974
		1975	=over 4
		1976
		1977	=item $pw = new urxvt::pw
		1978
		1979	Create a new process watcher in stopped state.
		1980
		1981	=item $pw = $pw->cb (sub { my ($pw, $exit_status) = @_; ... })
		1982
		1983	Set the callback to be called when the timer triggers.
		1984
		1985	=item $pw = $timer->start ($pid)
		1986
		1987	Tells the wqtcher to start watching for process C<$pid>.
		1988
		1989	=item $pw = $pw->stop
		1990
		1991	Stop the watcher.
1292		1992
1293	=back	1993	=back
1294		1994
1295	=head1 ENVIRONMENT	1995	=head1 ENVIRONMENT
1296		1996
…		…
1303		2003
1304	=item == 0 - fatal messages	2004	=item == 0 - fatal messages
1305		2005
1306	=item >= 3 - script loading and management	2006	=item >= 3 - script loading and management
1307		2007
1308	=item >=10 - all events received	2008	=item >=10 - all called hooks
		2009
		2010	=item >=11 - hook reutrn values
1309		2011
1310	=back	2012	=back
1311		2013
1312	=head1 AUTHOR	2014	=head1 AUTHOR
1313		2015

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