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Revision 1.10 by root, Mon Jan 2 20:47:52 2006 UTC vs.
Revision 1.171 by root, Fri Oct 10 00:11:44 2008 UTC

		1	=encoding utf8
		2
1	=head1 NAME	3	=head1 NAME
2		4
3	rxvtperl - rxvt-unicode's embedded perl interpreter	5	@@RXVT_NAME@@perl - rxvt-unicode's embedded perl interpreter
4		6
5	=head1 SYNOPSIS	7	=head1 SYNOPSIS
6		8
7	# create a file grab_test in $HOME:	9	# create a file grab_test in $HOME:
8		10
…		…
15		17
16	@@RXVT_NAME@@ --perl-lib $HOME -pe grab_test	18	@@RXVT_NAME@@ --perl-lib $HOME -pe grab_test
17		19
18	=head1 DESCRIPTION	20	=head1 DESCRIPTION
19		21
20	Everytime a terminal object gets created, scripts specified via the	22	Every time a terminal object gets created, extension scripts specified via
21	C<perl> resource are loaded and associated with it.	23	the C<perl> resource are loaded and associated with it.
22		24
23	Scripts are compiled in a 'use strict' and 'use utf8' environment, and	25	Scripts are compiled in a 'use strict' and 'use utf8' environment, and
24	thus must be encoded as UTF-8.	26	thus must be encoded as UTF-8.
25		27
26	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
27	scripts will be shared (But not enabled) for all terminals.	29	scripts will be shared (but not enabled) for all terminals.
		30
		31	You can disable the embedded perl interpreter by setting both "perl-ext"
		32	and "perl-ext-common" resources to the empty string.
		33
		34	=head1 PREPACKAGED EXTENSIONS
		35
		36	This section describes the extensions delivered with this release. You can
		37	find them in F<@@RXVT_LIBDIR@@/urxvt/perl/>.
		38
		39	You can activate them like this:
		40
		41	@@RXVT_NAME@@ -pe <extensionname>
		42
		43	Or by adding them to the resource for extensions loaded by default:
		44
		45	URxvt.perl-ext-common: default,selection-autotransform
		46
		47	=over 4
		48
		49	=item selection (enabled by default)
		50
		51	(More) intelligent selection. This extension tries to be more intelligent
		52	when the user extends selections (double-click and further clicks). Right
		53	now, it tries to select words, urls and complete shell-quoted
		54	arguments, which is very convenient, too, if your F<ls> supports
		55	C<--quoting-style=shell>.
		56
		57	A double-click usually selects the word under the cursor, further clicks
		58	will enlarge the selection.
		59
		60	The selection works by trying to match a number of regexes and displaying
		61	them in increasing order of length. You can add your own regexes by
		62	specifying resources of the form:
		63
		64	URxvt.selection.pattern-0: perl-regex
		65	URxvt.selection.pattern-1: perl-regex
		66	...
		67
		68	The index number (0, 1...) must not have any holes, and each regex must
		69	contain at least one pair of capturing parentheses, which will be used for
		70	the match. For example, the following adds a regex that matches everything
		71	between two vertical bars:
		72
		73	URxvt.selection.pattern-0: \\|([^|]+)\\|
		74
		75	Another example: Programs I use often output "absolute path: " at the
		76	beginning of a line when they process multiple files. The following
		77	pattern matches the filename (note, there is a single space at the very
		78	end):
		79
		80	URxvt.selection.pattern-0: ^(/[^:]+):\
		81
		82	You can look at the source of the selection extension to see more
		83	interesting uses, such as parsing a line from beginning to end.
		84
		85	This extension also offers following bindable keyboard commands:
		86
		87	=over 4
		88
		89	=item rot13
		90
		91	Rot-13 the selection when activated. Used via keyboard trigger:
		92
		93	URxvt.keysym.C-M-r: perl:selection:rot13
		94
		95	=back
		96
		97	=item option-popup (enabled by default)
		98
		99	Binds a popup menu to Ctrl-Button2 that lets you toggle (some) options at
		100	runtime.
		101
		102	Other extensions can extend this popup menu by pushing a code reference
		103	onto C<@{ $term->{option_popup_hook} }>, which gets called whenever the
		104	popup is being displayed.
		105
		106	Its sole argument is the popup menu, which can be modified. It should
		107	either return nothing or a string, the initial boolean value and a code
		108	reference. The string will be used as button text and the code reference
		109	will be called when the toggle changes, with the new boolean value as
		110	first argument.
		111
		112	The following will add an entry C<myoption> that changes
		113	C<< $self->{myoption} >>:
		114
		115	push @{ $self->{term}{option_popup_hook} }, sub {
		116	("my option" => $myoption, sub { $self->{myoption} = $_[0] })
		117	};
		118
		119	=item selection-popup (enabled by default)
		120
		121	Binds a popup menu to Ctrl-Button3 that lets you convert the selection
		122	text into various other formats/action (such as uri unescaping, perl
		123	evaluation, web-browser starting etc.), depending on content.
		124
		125	Other extensions can extend this popup menu by pushing a code reference
		126	onto C<@{ $term->{selection_popup_hook} }>, which gets called whenever the
		127	popup is being displayed.
		128
		129	Its sole argument is the popup menu, which can be modified. The selection
		130	is in C<$_>, which can be used to decide whether to add something or not.
		131	It should either return nothing or a string and a code reference. The
		132	string will be used as button text and the code reference will be called
		133	when the button gets activated and should transform C<$_>.
		134
		135	The following will add an entry C<a to b> that transforms all C<a>s in
		136	the selection to C<b>s, but only if the selection currently contains any
		137	C<a>s:
		138
		139	push @{ $self->{term}{selection_popup_hook} }, sub {
		140	/a/ ? ("a to b" => sub { s/a/b/g }
		141	: ()
		142	};
		143
		144	=item searchable-scrollback<hotkey> (enabled by default)
		145
		146	Adds regex search functionality to the scrollback buffer, triggered
		147	by a hotkey (default: C<M-s>). While in search mode, normal terminal
		148	input/output is suspended and a regex is displayed at the bottom of the
		149	screen.
		150
		151	Inputting characters appends them to the regex and continues incremental
		152	search. C<BackSpace> removes a character from the regex, C<Up> and C<Down>
		153	search upwards/downwards in the scrollback buffer, C<End> jumps to the
		154	bottom. C<Escape> leaves search mode and returns to the point where search
		155	was started, while C<Enter> or C<Return> stay at the current position and
		156	additionally stores the first match in the current line into the primary
		157	selection if the C<Shift> modifier is active.
		158
		159	The regex defaults to "(?i)", resulting in a case-insensitive search. To
		160	get a case-sensitive search you can delete this prefix using C<BackSpace>
		161	or simply use an uppercase character which removes the "(?i)" prefix.
		162
		163	See L<perlre> for more info about perl regular expression syntax.
		164
		165	=item readline (enabled by default)
		166
		167	A support package that tries to make editing with readline easier. At
		168	the moment, it reacts to clicking shift-left mouse button by trying to
		169	move the text cursor to this position. It does so by generating as many
		170	cursor-left or cursor-right keypresses as required (this only works
		171	for programs that correctly support wide characters).
		172
		173	To avoid too many false positives, this is only done when:
		174
		175	=over 4
		176
		177	=item - the tty is in ICANON state.
		178
		179	=item - the text cursor is visible.
		180
		181	=item - the primary screen is currently being displayed.
		182
		183	=item - the mouse is on the same (multi-row-) line as the text cursor.
		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 selection-autotransform
		191
		192	This selection allows you to do automatic transforms on a selection
		193	whenever a selection is made.
		194
		195	It works by specifying perl snippets (most useful is a single C<s///>
		196	operator) that modify C<$_> as resources:
		197
		198	URxvt.selection-autotransform.0: transform
		199	URxvt.selection-autotransform.1: transform
		200	...
		201
		202	For example, the following will transform selections of the form
		203	C<filename:number>, often seen in compiler messages, into C<vi +$filename
		204	$word>:
		205
		206	URxvt.selection-autotransform.0: s/^([^:[:space:]]+):(\\d+):?$/vi +$2 \\Q$1\\E\\x0d/
		207
		208	And this example matches the same,but replaces it with vi-commands you can
		209	paste directly into your (vi :) editor:
		210
		211	URxvt.selection-autotransform.0: s/^([^:[:space:]]+(\\d+):?$/:e \\Q$1\\E\\x0d:$2\\x0d/
		212
		213	Of course, this can be modified to suit your needs and your editor :)
		214
		215	To expand the example above to typical perl error messages ("XXX at
		216	FILENAME line YYY."), you need a slightly more elaborate solution:
		217
		218	URxvt.selection.pattern-0: ( at .*? line \\d+[,.])
		219	URxvt.selection-autotransform.0: s/^ at (.*?) line (\\d+)[,.]$/:e \\Q$1\E\\x0d:$2\\x0d/
		220
		221	The first line tells the selection code to treat the unchanging part of
		222	every error message as a selection pattern, and the second line transforms
		223	the message into vi commands to load the file.
		224
		225	=item tabbed
		226
		227	This transforms the terminal into a tabbar with additional terminals, that
		228	is, it implements what is commonly referred to as "tabbed terminal". The topmost line
		229	displays a "[NEW]" button, which, when clicked, will add a new tab, followed by one
		230	button per tab.
		231
		232	Clicking a button will activate that tab. Pressing B<Shift-Left> and
		233	B<Shift-Right> will switch to the tab left or right of the current one,
		234	while B<Shift-Down> creates a new tab.
		235
		236	The tabbar itself can be configured similarly to a normal terminal, but
		237	with a resource class of C<URxvt.tabbed>. In addition, it supports the
		238	following four resources (shown with defaults):
		239
		240	URxvt.tabbed.tabbar-fg: <colour-index, default 3>
		241	URxvt.tabbed.tabbar-bg: <colour-index, default 0>
		242	URxvt.tabbed.tab-fg: <colour-index, default 0>
		243	URxvt.tabbed.tab-bg: <colour-index, default 1>
		244
		245	See I<COLOR AND GRAPHICS> in the @@RXVT_NAME@@(1) manpage for valid
		246	indices.
		247
		248	=item matcher
		249
		250	Uses per-line display filtering (C<on_line_update>) to underline text
		251	matching a certain pattern and make it clickable. When clicked with the
		252	mouse button specified in the C<matcher.button> resource (default 2, or
		253	middle), the program specified in the C<matcher.launcher> resource
		254	(default, the C<urlLauncher> resource, C<sensible-browser>) will be started
		255	with the matched text as first argument. The default configuration is
		256	suitable for matching URLs and launching a web browser, like the
		257	former "mark-urls" extension.
		258
		259	The default pattern to match URLs can be overridden with the
		260	C<matcher.pattern.0> resource, and additional patterns can be specified
		261	with numbered patterns, in a manner similar to the "selection" extension.
		262	The launcher can also be overridden on a per-pattern basis.
		263
		264	It is possible to activate the most recently seen match from the keyboard.
		265	Simply bind a keysym to "perl:matcher" as seen in the example below.
		266
		267	Example configuration:
		268
		269	URxvt.perl-ext: default,matcher
		270	URxvt.urlLauncher: sensible-browser
		271	URxvt.keysym.C-Delete: perl:matcher
		272	URxvt.matcher.button: 1
		273	URxvt.matcher.pattern.1: \\bwww\\.[\\w-]+\\.[\\w./?&@#-]*[\\w/-]
		274	URxvt.matcher.pattern.2: \\B(/\\S+?):(\\d+)(?=:|$)
		275	URxvt.matcher.launcher.2: gvim +$2 $1
		276
		277	=item xim-onthespot
		278
		279	This (experimental) perl extension implements OnTheSpot editing. It does
		280	not work perfectly, and some input methods don't seem to work well with
		281	OnTheSpot editing in general, but it seems to work at least for SCIM and
		282	kinput2.
		283
		284	You enable it by specifying this extension and a preedit style of
		285	C<OnTheSpot>, i.e.:
		286
		287	@@RXVT_NAME@@ -pt OnTheSpot -pe xim-onthespot
		288
		289	=item kuake<hotkey>
		290
		291	A very primitive quake-console-like extension. It was inspired by a
		292	description of how the programs C<kuake> and C<yakuake> work: Whenever the
		293	user presses a global accelerator key (by default C<F10>), the terminal
		294	will show or hide itself. Another press of the accelerator key will hide
		295	or show it again.
		296
		297	Initially, the window will not be shown when using this extension.
		298
		299	This is useful if you need a single terminal that is not using any desktop
		300	space most of the time but is quickly available at the press of a key.
		301
		302	The accelerator key is grabbed regardless of any modifiers, so this
		303	extension will actually grab a physical key just for this function.
		304
		305	If you want a quake-like animation, tell your window manager to do so
		306	(fvwm can do it).
		307
		308	=item block-graphics-to-ascii
		309
		310	A not very useful example of filtering all text output to the terminal
		311	by replacing all line-drawing characters (U+2500 .. U+259F) by a
		312	similar-looking ascii character.
		313
		314	=item digital-clock
		315
		316	Displays a digital clock using the built-in overlay.
		317
		318	=item remote-clipboard
		319
		320	Somewhat of a misnomer, this extension adds two menu entries to the
		321	selection popup that allows one to run external commands to store the
		322	selection somewhere and fetch it again.
		323
		324	We use it to implement a "distributed selection mechanism", which just
		325	means that one command uploads the file to a remote server, and another
		326	reads it.
		327
		328	The commands can be set using the C<URxvt.remote-selection.store> and
		329	C<URxvt.remote-selection.fetch> resources. The first should read the
		330	selection to store from STDIN (always in UTF-8), the second should provide
		331	the selection data on STDOUT (also in UTF-8).
		332
		333	The defaults (which are likely useless to you) use rsh and cat:
		334
		335	URxvt.remote-selection.store: rsh ruth 'cat >/tmp/distributed-selection'
		336	URxvt.remote-selection.fetch: rsh ruth 'cat /tmp/distributed-selection'
		337
		338	=item selection-pastebin
		339
		340	This is a little rarely useful extension that Uploads the selection as
		341	textfile to a remote site (or does other things). (The implementation is
		342	not currently secure for use in a multiuser environment as it writes to
		343	F</tmp> directly.).
		344
		345	It listens to the C<selection-pastebin:remote-pastebin> keyboard command,
		346	i.e.
		347
		348	URxvt.keysym.C-M-e: perl:selection-pastebin:remote-pastebin
		349
		350	Pressing this combination runs a command with C<%> replaced by the name of
		351	the textfile. This command can be set via a resource:
		352
		353	URxvt.selection-pastebin.cmd: rsync -apP % ruth:/var/www/www.ta-sa.org/files/txt/.
		354
		355	And the default is likely not useful to anybody but the few people around
		356	here :)
		357
		358	The name of the textfile is the hex encoded md5 sum of the selection, so
		359	the same content should lead to the same filename.
		360
		361	After a successful upload the selection will be replaced by the text given
		362	in the C<selection-pastebin-url> resource (again, the % is the placeholder
		363	for the filename):
		364
		365	URxvt.selection-pastebin.url: http://www.ta-sa.org/files/txt/%
		366
		367	I<Note to xrdb users:> xrdb uses the C preprocessor, which might interpret
		368	the double C</> characters as comment start. Use C<\057\057> instead,
		369	which works regardless of wether xrdb is used to parse the resource file
		370	or not.
		371
		372	=item example-refresh-hooks
		373
		374	Displays a very simple digital clock in the upper right corner of the
		375	window. Illustrates overwriting the refresh callbacks to create your own
		376	overlays or changes.
		377
		378	=back
		379
		380	=head1 API DOCUMENTATION
28		381
29	=head2 General API Considerations	382	=head2 General API Considerations
30		383
31	All objects (such as terminals, time watchers etc.) are typical	384	All objects (such as terminals, time watchers etc.) are typical
32	reference-to-hash objects. The hash can be used to store anything you	385	reference-to-hash objects. The hash can be used to store anything you
33	like. All members starting with an underscore (such as C<_ptr> or	386	like. All members starting with an underscore (such as C<_ptr> or
34	C<_hook>) are reserved for internal uses and must not be accessed or	387	C<_hook>) are reserved for internal uses and B<MUST NOT> be accessed or
35	modified).	388	modified).
36		389
37	When objects are destroyed on the C++ side, the perl object hashes are	390	When objects are destroyed on the C++ side, the perl object hashes are
38	emptied, so its best to store related objects such as time watchers and	391	emptied, so its best to store related objects such as time watchers and
39	the like inside the terminal object so they get destroyed as soon as the	392	the like inside the terminal object so they get destroyed as soon as the
40	terminal is destroyed.	393	terminal is destroyed.
41		394
		395	Argument names also often indicate the type of a parameter. Here are some
		396	hints on what they mean:
		397
		398	=over 4
		399
		400	=item $text
		401
		402	Rxvt-unicodes special way of encoding text, where one "unicode" character
		403	always represents one screen cell. See L<ROW_t> for a discussion of this format.
		404
		405	=item $string
		406
		407	A perl text string, with an emphasis on I<text>. It can store all unicode
		408	characters and is to be distinguished with text encoded in a specific
		409	encoding (often locale-specific) and binary data.
		410
		411	=item $octets
		412
		413	Either binary data or - more common - a text string encoded in a
		414	locale-specific way.
		415
		416	=back
		417
		418	=head2 Extension Objects
		419
		420	Every perl extension is a perl class. A separate perl object is created
		421	for each terminal, and each terminal has its own set of extenion objects,
		422	which are passed as the first parameter to hooks. So extensions can use
		423	their C<$self> object without having to think about clashes with other
		424	extensions or other terminals, with the exception of methods and members
		425	that begin with an underscore character C<_>: these are reserved for
		426	internal use.
		427
		428	Although it isn't a C<urxvt::term> object, you can call all methods of the
		429	C<urxvt::term> class on this object.
		430
		431	It has the following methods and data members:
		432
		433	=over 4
		434
		435	=item $urxvt_term = $self->{term}
		436
		437	Returns the C<urxvt::term> object associated with this instance of the
		438	extension. This member I<must not> be changed in any way.
		439
		440	=item $self->enable ($hook_name => $cb, [$hook_name => $cb..])
		441
		442	Dynamically enable the given hooks (named without the C<on_> prefix) for
		443	this extension, replacing any previous hook. This is useful when you want
		444	to overwrite time-critical hooks only temporarily.
		445
		446	=item $self->disable ($hook_name[, $hook_name..])
		447
		448	Dynamically disable the given hooks.
		449
		450	=back
		451
42	=head2 Hooks	452	=head2 Hooks
43		453
44	The following subroutines can be declared in loaded scripts, and will be called	454	The following subroutines can be declared in extension files, and will be
45	whenever the relevant event happens.	455	called whenever the relevant event happens.
46		456
47	All of them must return a boolean value. If it is true, then the event	457	The first argument passed to them is an extension object as described in
48	counts as being I<consumed>, and the invocation of other hooks is skipped,	458	the in the C<Extension Objects> section.
		459
		460	B<All> of these hooks must return a boolean value. If any of the called
		461	hooks returns true, then the event counts as being I<consumed>, and the
49	and the relevant action might not be carried out by the C++ code.	462	relevant action might not be carried out by the C++ code.
50		463
51	When in doubt, return a false value (preferably C<()>).	464	I<< When in doubt, return a false value (preferably C<()>). >>
52		465
53	=over 4	466	=over 4
54		467
55	=item on_init $term	468	=item on_init $term
56		469
57	Called after a new terminal object has been initialized, but before	470	Called after a new terminal object has been initialized, but before
58	windows are created or the command gets run.	471	windows are created or the command gets run. Most methods are unsafe to
		472	call or deliver senseless data, as terminal size and other characteristics
		473	have not yet been determined. You can safely query and change resources
		474	and options, though. For many purposes the C<on_start> hook is a better
		475	place.
		476
		477	=item on_start $term
		478
		479	Called at the very end of initialisation of a new terminal, just before
		480	trying to map (display) the toplevel and returning to the main loop.
		481
		482	=item on_destroy $term
		483
		484	Called whenever something tries to destroy terminal, when the terminal is
		485	still fully functional (not for long, though).
59		486
60	=item on_reset $term	487	=item on_reset $term
61		488
62	Called after the screen is "reset" for any reason, such as resizing or	489	Called after the screen is "reset" for any reason, such as resizing or
63	control sequences. Here is where you can react on changes to size-related	490	control sequences. Here is where you can react on changes to size-related
64	variables.	491	variables.
65		492
66	=item on_start $term	493	=item on_child_start $term, $pid
67		494
68	Called at the very end of initialisation of a new terminal, just before	495	Called just after the child process has been C<fork>ed.
69	returning to the mainloop.	496
		497	=item on_child_exit $term, $status
		498
		499	Called just after the child process has exited. C<$status> is the status
		500	from C<waitpid>.
70		501
71	=item on_sel_make $term, $eventtime	502	=item on_sel_make $term, $eventtime
72		503
73	Called whenever a selection has been made by the user, but before the	504	Called whenever a selection has been made by the user, but before the
74	selection text is copied, so changes to the beginning, end or type of the	505	selection text is copied, so changes to the beginning, end or type of the
…		…
81		512
82	Called whenever a selection has been copied, but before the selection is	513	Called whenever a selection has been copied, but before the selection is
83	requested from the server. The selection text can be queried and changed	514	requested from the server. The selection text can be queried and changed
84	by calling C<< $term->selection >>.	515	by calling C<< $term->selection >>.
85		516
86	Returning a true value aborts selection grabbing. It will still be hilighted.	517	Returning a true value aborts selection grabbing. It will still be highlighted.
87		518
88	=item on_focus_in $term	519	=item on_sel_extend $term
89		520
90	Called whenever the window gets the keyboard focus, before urxvt does	521	Called whenever the user tries to extend the selection (e.g. with a double
91	focus in processing.	522	click) and is either supposed to return false (normal operation), or
		523	should extend the selection itself and return true to suppress the built-in
		524	processing. This can happen multiple times, as long as the callback
		525	returns true, it will be called on every further click by the user and is
		526	supposed to enlarge the selection more and more, if possible.
92		527
93	=item on_focus_out $term	528	See the F<selection> example extension.
94
95	Called wheneever the window loses keyboard focus, before urxvt does focus
96	out processing.
97		529
98	=item on_view_change $term, $offset	530	=item on_view_change $term, $offset
99		531
100	Called whenever the view offset changes, i..e the user or program	532	Called whenever the view offset changes, i.e. the user or program
101	scrolls. Offset C<0> means display the normal terminal, positive values	533	scrolls. Offset C<0> means display the normal terminal, positive values
102	show this many lines of scrollback.	534	show this many lines of scrollback.
103		535
104	=item on_scroll_back $term, $lines, $saved	536	=item on_scroll_back $term, $lines, $saved
105		537
…		…
109		541
110	It is called before lines are scrolled out (so rows 0 .. min ($lines - 1,	542	It is called before lines are scrolled out (so rows 0 .. min ($lines - 1,
111	$nrow - 1) represent the lines to be scrolled out). C<$saved> is the total	543	$nrow - 1) represent the lines to be scrolled out). C<$saved> is the total
112	number of lines that will be in the scrollback buffer.	544	number of lines that will be in the scrollback buffer.
113		545
114	=item on_tty_activity $term *NYI*	546	=item on_osc_seq $term, $op, $args, $resp
115		547
116	Called whenever the program(s) running in the urxvt window send output.	548	Called on every OSC sequence and can be used to suppress it or modify its
		549	behaviour. The default should be to return an empty list. A true value
		550	suppresses execution of the request completely. Make sure you don't get
		551	confused by recursive invocations when you output an OSC sequence within
		552	this callback.
		553
		554	C<on_osc_seq_perl> should be used for new behaviour.
		555
		556	=item on_osc_seq_perl $term, $args, $resp
		557
		558	Called whenever the B<ESC ] 777 ; string ST> command sequence (OSC =
		559	operating system command) is processed. Cursor position and other state
		560	information is up-to-date when this happens. For interoperability, the
		561	string should start with the extension name (sans -osc) and a semicolon,
		562	to distinguish it from commands for other extensions, and this might be
		563	enforced in the future.
		564
		565	For example, C<overlay-osc> uses this:
		566
		567	sub on_osc_seq_perl {
		568	my ($self, $osc, $resp) = @_;
		569
		570	return unless $osc =~ s/^overlay;//;
		571
		572	... process remaining $osc string
		573	}
		574
		575	Be careful not ever to trust (in a security sense) the data you receive,
		576	as its source can not easily be controlled (e-mail content, messages from
		577	other users on the same system etc.).
		578
		579	For responses, C<$resp> contains the end-of-args separator used by the
		580	sender.
		581
		582	=item on_add_lines $term, $string
		583
		584	Called whenever text is about to be output, with the text as argument. You
		585	can filter/change and output the text yourself by returning a true value
		586	and calling C<< $term->scr_add_lines >> yourself. Please note that this
		587	might be very slow, however, as your hook is called for B<all> text being
		588	output.
		589
		590	=item on_tt_write $term, $octets
		591
		592	Called whenever some data is written to the tty/pty and can be used to
		593	suppress or filter tty input.
		594
		595	=item on_line_update $term, $row
		596
		597	Called whenever a line was updated or changed. Can be used to filter
		598	screen output (e.g. underline urls or other useless stuff). Only lines
		599	that are being shown will be filtered, and, due to performance reasons,
		600	not always immediately.
		601
		602	The row number is always the topmost row of the line if the line spans
		603	multiple rows.
		604
		605	Please note that, if you change the line, then the hook might get called
		606	later with the already-modified line (e.g. if unrelated parts change), so
		607	you cannot just toggle rendition bits, but only set them.
117		608
118	=item on_refresh_begin $term	609	=item on_refresh_begin $term
119		610
120	Called just before the screen gets redrawn. Can be used for overlay	611	Called just before the screen gets redrawn. Can be used for overlay or
121	or similar effects by modify terminal contents in refresh_begin, and	612	similar effects by modifying the terminal contents in refresh_begin, and
122	restoring them in refresh_end. The built-in overlay and selection display	613	restoring them in refresh_end. The built-in overlay and selection display
123	code is run after this hook, and takes precedence.	614	code is run after this hook, and takes precedence.
124		615
125	=item on_refresh_end $term	616	=item on_refresh_end $term
126		617
127	Called just after the screen gets redrawn. See C<on_refresh_begin>.	618	Called just after the screen gets redrawn. See C<on_refresh_begin>.
		619
		620	=item on_user_command $term, $string
		621
		622	Called whenever a user-configured event is being activated (e.g. via
		623	a C<perl:string> action bound to a key, see description of the B<keysym>
		624	resource in the @@RXVT_NAME@@(1) manpage).
		625
		626	The event is simply the action string. This interface is assumed to change
		627	slightly in the future.
		628
		629	=item on_resize_all_windows $tern, $new_width, $new_height
		630
		631	Called just after the new window size has been calculated, but before
		632	windows are actually being resized or hints are being set. If this hook
		633	returns TRUE, setting of the window hints is being skipped.
		634
		635	=item on_x_event $term, $event
		636
		637	Called on every X event received on the vt window (and possibly other
		638	windows). Should only be used as a last resort. Most event structure
		639	members are not passed.
		640
		641	=item on_root_event $term, $event
		642
		643	Like C<on_x_event>, but is called for events on the root window.
		644
		645	=item on_focus_in $term
		646
		647	Called whenever the window gets the keyboard focus, before rxvt-unicode
		648	does focus in processing.
		649
		650	=item on_focus_out $term
		651
		652	Called whenever the window loses keyboard focus, before rxvt-unicode does
		653	focus out processing.
		654
		655	=item on_configure_notify $term, $event
		656
		657	=item on_property_notify $term, $event
		658
		659	=item on_key_press $term, $event, $keysym, $octets
		660
		661	=item on_key_release $term, $event, $keysym
		662
		663	=item on_button_press $term, $event
		664
		665	=item on_button_release $term, $event
		666
		667	=item on_motion_notify $term, $event
		668
		669	=item on_map_notify $term, $event
		670
		671	=item on_unmap_notify $term, $event
		672
		673	Called whenever the corresponding X event is received for the terminal If
		674	the hook returns true, then the even will be ignored by rxvt-unicode.
		675
		676	The event is a hash with most values as named by Xlib (see the XEvent
		677	manpage), with the additional members C<row> and C<col>, which are the
		678	(real, not screen-based) row and column under the mouse cursor.
		679
		680	C<on_key_press> additionally receives the string rxvt-unicode would
		681	output, if any, in locale-specific encoding.
		682
		683	subwindow.
		684
		685	=item on_client_message $term, $event
		686
		687	=item on_wm_protocols $term, $event
		688
		689	=item on_wm_delete_window $term, $event
		690
		691	Called when various types of ClientMessage events are received (all with
		692	format=32, WM_PROTOCOLS or WM_PROTOCOLS:WM_DELETE_WINDOW).
		693
		694	=back
		695
		696	=cut
		697
		698	package urxvt;
		699
		700	use utf8;
		701	use strict;
		702	use Carp ();
		703	use Scalar::Util ();
		704	use List::Util ();
		705
		706	our $VERSION = 1;
		707	our $TERM;
		708	our @TERM_INIT;
		709	our @TERM_EXT;
		710	our @HOOKNAME;
		711	our %HOOKTYPE = map +($HOOKNAME[$_] => $_), 0..$#HOOKNAME;
		712	our %OPTION;
		713
		714	our $LIBDIR;
		715	our $RESNAME;
		716	our $RESCLASS;
		717	our $RXVTNAME;
		718
		719	our $NOCHAR = chr 0xffff;
		720
		721	=head2 Variables in the C<urxvt> Package
		722
		723	=over 4
		724
		725	=item $urxvt::LIBDIR
		726
		727	The rxvt-unicode library directory, where, among other things, the perl
		728	modules and scripts are stored.
		729
		730	=item $urxvt::RESCLASS, $urxvt::RESCLASS
		731
		732	The resource class and name rxvt-unicode uses to look up X resources.
		733
		734	=item $urxvt::RXVTNAME
		735
		736	The basename of the installed binaries, usually C<urxvt>.
		737
		738	=item $urxvt::TERM
		739
		740	The current terminal. This variable stores the current C<urxvt::term>
		741	object, whenever a callback/hook is executing.
		742
		743	=item @urxvt::TERM_INIT
		744
		745	All code references in this array will be called as methods of the next newly
		746	created C<urxvt::term> object (during the C<on_init> phase). The array
		747	gets cleared before the code references that were in it are being executed,
		748	so references can push themselves onto it again if they so desire.
		749
		750	This complements to the perl-eval command line option, but gets executed
		751	first.
		752
		753	=item @urxvt::TERM_EXT
		754
		755	Works similar to C<@TERM_INIT>, but contains perl package/class names, which
		756	get registered as normal extensions after calling the hooks in C<@TERM_INIT>
		757	but before other extensions. Gets cleared just like C<@TERM_INIT>.
128		758
129	=back	759	=back
130		760
131	=head2 Functions in the C<urxvt> Package	761	=head2 Functions in the C<urxvt> Package
132		762
…		…
145	that calls this function.	775	that calls this function.
146		776
147	Using this function has the advantage that its output ends up in the	777	Using this function has the advantage that its output ends up in the
148	correct place, e.g. on stderr of the connecting urxvtc client.	778	correct place, e.g. on stderr of the connecting urxvtc client.
149		779
		780	Messages have a size limit of 1023 bytes currently.
		781
		782	=item @terms = urxvt::termlist
		783
		784	Returns all urxvt::term objects that exist in this process, regardless of
		785	whether they are started, being destroyed etc., so be careful. Only term
		786	objects that have perl extensions attached will be returned (because there
		787	is no urxvt::term objet associated with others).
		788
150	=item $time = urxvt::NOW	789	=item $time = urxvt::NOW
151		790
152	Returns the "current time" (as per the event loop).	791	Returns the "current time" (as per the event loop).
153		792
		793	=item urxvt::CurrentTime
		794
		795	=item urxvt::ShiftMask, LockMask, ControlMask, Mod1Mask, Mod2Mask,
		796	Mod3Mask, Mod4Mask, Mod5Mask, Button1Mask, Button2Mask, Button3Mask,
		797	Button4Mask, Button5Mask, AnyModifier
		798
		799	=item urxvt::NoEventMask, KeyPressMask, KeyReleaseMask,
		800	ButtonPressMask, ButtonReleaseMask, EnterWindowMask, LeaveWindowMask,
		801	PointerMotionMask, PointerMotionHintMask, Button1MotionMask, Button2MotionMask,
		802	Button3MotionMask, Button4MotionMask, Button5MotionMask, ButtonMotionMask,
		803	KeymapStateMask, ExposureMask, VisibilityChangeMask, StructureNotifyMask,
		804	ResizeRedirectMask, SubstructureNotifyMask, SubstructureRedirectMask,
		805	FocusChangeMask, PropertyChangeMask, ColormapChangeMask, OwnerGrabButtonMask
		806
		807	=item urxvt::KeyPress, KeyRelease, ButtonPress, ButtonRelease, MotionNotify,
		808	EnterNotify, LeaveNotify, FocusIn, FocusOut, KeymapNotify, Expose,
		809	GraphicsExpose, NoExpose, VisibilityNotify, CreateNotify, DestroyNotify,
		810	UnmapNotify, MapNotify, MapRequest, ReparentNotify, ConfigureNotify,
		811	ConfigureRequest, GravityNotify, ResizeRequest, CirculateNotify,
		812	CirculateRequest, PropertyNotify, SelectionClear, SelectionRequest,
		813	SelectionNotify, ColormapNotify, ClientMessage, MappingNotify
		814
		815	Various constants for use in X calls and event processing.
		816
		817	=back
		818
		819	=head2 RENDITION
		820
		821	Rendition bitsets contain information about colour, font, font styles and
		822	similar information for each screen cell.
		823
		824	The following "macros" deal with changes in rendition sets. You should
		825	never just create a bitset, you should always modify an existing one,
		826	as they contain important information required for correct operation of
		827	rxvt-unicode.
		828
		829	=over 4
		830
		831	=item $rend = urxvt::DEFAULT_RSTYLE
		832
		833	Returns the default rendition, as used when the terminal is starting up or
		834	being reset. Useful as a base to start when creating renditions.
		835
		836	=item $rend = urxvt::OVERLAY_RSTYLE
		837
		838	Return the rendition mask used for overlays by default.
		839
		840	=item $rendbit = urxvt::RS_Bold, RS_Italic, RS_Blink, RS_RVid, RS_Uline
		841
		842	Return the bit that enabled bold, italic, blink, reverse-video and
		843	underline, respectively. To enable such a style, just logically OR it into
		844	the bitset.
		845
		846	=item $foreground = urxvt::GET_BASEFG $rend
		847
		848	=item $background = urxvt::GET_BASEBG $rend
		849
		850	Return the foreground/background colour index, respectively.
		851
		852	=item $rend = urxvt::SET_FGCOLOR $rend, $new_colour
		853
		854	=item $rend = urxvt::SET_BGCOLOR $rend, $new_colour
		855
		856	=item $rend = urxvt::SET_COLOR $rend, $new_fg, $new_bg
		857
		858	Replace the foreground/background colour in the rendition mask with the
		859	specified one.
		860
		861	=item $value = urxvt::GET_CUSTOM $rend
		862
		863	Return the "custom" value: Every rendition has 5 bits for use by
		864	extensions. They can be set and changed as you like and are initially
		865	zero.
		866
		867	=item $rend = urxvt::SET_CUSTOM $rend, $new_value
		868
		869	Change the custom value.
		870
		871	=back
		872
154	=cut	873	=cut
155		874
156	package urxvt;
157
158	use strict;
159
160	our $term;
161	our @HOOKNAME;
162	our $LIBDIR;
163
164	BEGIN {	875	BEGIN {
165	urxvt->bootstrap;
166
167	# overwrite perl's warn	876	# overwrite perl's warn
168	*CORE::GLOBAL::warn = sub {	877	*CORE::GLOBAL::warn = sub {
169	my $msg = join "", @_;	878	my $msg = join "", @_;
170	$msg .= "\n"	879	$msg .= "\n"
171	unless $msg =~ /\n$/;	880	unless $msg =~ /\n$/;
172	urxvt::warn ($msg);	881	urxvt::warn ($msg);
173	};	882	};
174	}	883	}
175		884
176	my @hook_count;	885	no warnings 'utf8';
		886
177	my $verbosity = $ENV{URXVT_PERL_VERBOSITY};	887	my $verbosity = $ENV{URXVT_PERL_VERBOSITY};
178		888
179	sub verbose {	889	sub verbose {
180	my ($level, $msg) = @_;	890	my ($level, $msg) = @_;
181	warn "$msg\n" if $level <= $verbosity;	891	warn "$msg\n" if $level <= $verbosity;
182	}	892	}
183		893
184	# find on_xxx subs in the package and register them	894	my %extension_pkg;
185	# as hooks
186	sub register_package($) {
187	my ($pkg) = @_;
188
189	for my $htype (0.. $#HOOKNAME) {
190	my $name = $HOOKNAME[$htype];
191
192	my $ref = $pkg->can ("on_" . lc $name)
193	or next;
194
195	$term->{_hook}[$htype]{$ref*1} = $ref;
196	$hook_count[$htype]++
197	or set_should_invoke $htype, 1;
198	}
199	}
200
201	my $script_pkg = "script0000";
202	my %script_pkg;
203		895
204	# load a single script into its own package, once only	896	# load a single script into its own package, once only
205	sub script_package($) {	897	sub extension_package($) {
206	my ($path) = @_;	898	my ($path) = @_;
207		899
208	$script_pkg{$path} ||= do {	900	$extension_pkg{$path} ||= do {
209	my $pkg = "urxvt::" . ($script_pkg++);	901	$path =~ /([^\/\\]+)$/;
		902	my $pkg = $1;
		903	$pkg =~ s/[^[:word:]]/_/g;
		904	$pkg = "urxvt::ext::$pkg";
210		905
211	verbose 3, "loading script '$path' into package '$pkg'";	906	verbose 3, "loading extension '$path' into package '$pkg'";
212		907
213	open my $fh, "<:raw", $path	908	open my $fh, "<:raw", $path
214	or die "$path: $!";	909	or die "$path: $!";
215		910
216	my $source = "package $pkg; use strict; use utf8;\n"	911	my $source =
		912	"package $pkg; use strict; use utf8; no warnings 'utf8';\n"
217	. "#line 1 \"$path\"\n{\n"	913	. "#line 1 \"$path\"\n{\n"
218	. (do { local $/; <$fh> })	914	. (do { local $/; <$fh> })
219	. "\n};\n1";	915	. "\n};\n1";
220		916
		917	eval $source
221	eval $source or die "$path: $@";	918	or die "$path: $@";
222		919
223	$pkg	920	$pkg
224	}	921	}
225	}	922	}
226		923
		924	our $retval; # return value for urxvt
		925
227	# called by the rxvt core	926	# called by the rxvt core
228	sub invoke {	927	sub invoke {
229	local $term = shift;	928	local $TERM = shift;
230	my $htype = shift;	929	my $htype = shift;
231		930
232	if ($htype == 0) { # INIT	931	if ($htype == 0) { # INIT
233	my @dirs = ((split /:/, $term->resource ("perl_lib")), "$LIBDIR/perl");	932	my @dirs = ((split /:/, $TERM->resource ("perl_lib")), "$LIBDIR/perl");
234		933
235	for my $ext (split /:/, $term->resource ("perl_ext")) {	934	my %ext_arg;
		935
		936	{
		937	my @init = @TERM_INIT;
		938	@TERM_INIT = ();
		939	$_->($TERM) for @init;
		940	my @pkg = @TERM_EXT;
		941	@TERM_EXT = ();
		942	$TERM->register_package ($_) for @pkg;
		943	}
		944
		945	for (grep $_, map { split /,/, $TERM->resource ("perl_ext_$_") } 1, 2) {
		946	if ($_ eq "default") {
		947	$ext_arg{$_} ||= [] for qw(selection option-popup selection-popup searchable-scrollback readline);
		948	} elsif (/^-(.*)$/) {
		949	delete $ext_arg{$1};
		950	} elsif (/^([^<]+)<(.*)>$/) {
		951	push @{ $ext_arg{$1} }, $2;
		952	} else {
		953	$ext_arg{$_} ||= [];
		954	}
		955	}
		956
		957	for my $ext (sort keys %ext_arg) {
236	my @files = grep -f $_, map "$_/$ext", @dirs;	958	my @files = grep -f $_, map "$_/$ext", @dirs;
237		959
238	if (@files) {	960	if (@files) {
239	register_package script_package $files[0];	961	$TERM->register_package (extension_package $files[0], $ext_arg{$ext});
240	} else {	962	} else {
241	warn "perl extension '$ext' not found in perl library search path\n";	963	warn "perl extension '$ext' not found in perl library search path\n";
242	}	964	}
243	}	965	}
244		966
		967	eval "#line 1 \"--perl-eval resource/argument\"\n" . $TERM->resource ("perl_eval");
		968	warn $@ if $@;
		969	}
		970
		971	$retval = undef;
		972
		973	if (my $cb = $TERM->{_hook}[$htype]) {
		974	verbose 10, "$HOOKNAME[$htype] (" . (join ", ", $TERM, @_) . ")"
		975	if $verbosity >= 10;
		976
		977	for my $pkg (keys %$cb) {
		978	my $retval_ = eval { $cb->{$pkg}->($TERM->{_pkg}{$pkg}, @_) };
		979	$retval ||= $retval_;
		980
		981	if ($@) {
		982	$TERM->ungrab; # better to lose the grab than the session
		983	warn $@;
		984	}
		985	}
		986
		987	verbose 11, "$HOOKNAME[$htype] returning <$retval>"
		988	if $verbosity >= 11;
		989	}
		990
245	} elsif ($htype == 1) { # DESTROY	991	if ($htype == 1) { # DESTROY
246	if (my $hook = $term->{_hook}) {	992	# clear package objects
247	for my $htype (0..$#$hook) {	993	%$_ = () for values %{ $TERM->{_pkg} };
248	$hook_count[$htype] -= scalar keys %{ $hook->[$htype] || {} }	994
249	or set_should_invoke $htype, 0;	995	# clear package
		996	%$TERM = ();
		997	}
		998
		999	$retval
		1000	}
		1001
		1002	sub SET_COLOR($$$) {
		1003	SET_BGCOLOR (SET_FGCOLOR ($_[0], $_[1]), $_[2])
		1004	}
		1005
		1006	sub rend2mask {
		1007	no strict 'refs';
		1008	my ($str, $mask) = (@_, 0);
		1009	my %color = ( fg => undef, bg => undef );
		1010	my @failed;
		1011	for my $spec ( split /\s+/, $str ) {
		1012	if ( $spec =~ /^([fb]g)[_:-]?(\d+)/i ) {
		1013	$color{lc($1)} = $2;
		1014	} else {
		1015	my $neg = $spec =~ s/^[-^]//;
		1016	unless ( exists &{"RS_$spec"} ) {
		1017	push @failed, $spec;
		1018	next;
		1019	}
		1020	my $cur = &{"RS_$spec"};
		1021	if ( $neg ) {
		1022	$mask &= ~$cur;
		1023	} else {
		1024	$mask |= $cur;
250	}	1025	}
251	}	1026	}
252	}	1027	}
		1028	($mask, @color{qw(fg bg)}, \@failed)
		1029	}
253		1030
254	my $cb = $term->{_hook}[$htype]	1031	# urxvt::term::extension
255	or return;
256		1032
257	verbose 10, "$HOOKNAME[$htype] (" . (join ", ", $term, @_) . ")"	1033	package urxvt::term::extension;
258	if $verbosity >= 10;
259		1034
		1035	sub enable {
		1036	my ($self, %hook) = @_;
		1037	my $pkg = $self->{_pkg};
		1038
260	while (my ($k, $v) = each %$cb) {	1039	while (my ($name, $cb) = each %hook) {
261	return 1 if $v->($term, @_);	1040	my $htype = $HOOKTYPE{uc $name};
		1041	defined $htype
		1042	or Carp::croak "unsupported hook type '$name'";
		1043
		1044	$self->set_should_invoke ($htype, +1)
		1045	unless exists $self->{term}{_hook}[$htype]{$pkg};
		1046
		1047	$self->{term}{_hook}[$htype]{$pkg} = $cb;
262	}	1048	}
		1049	}
263		1050
		1051	sub disable {
		1052	my ($self, @hook) = @_;
		1053	my $pkg = $self->{_pkg};
		1054
		1055	for my $name (@hook) {
		1056	my $htype = $HOOKTYPE{uc $name};
		1057	defined $htype
		1058	or Carp::croak "unsupported hook type '$name'";
		1059
		1060	$self->set_should_invoke ($htype, -1)
		1061	if delete $self->{term}{_hook}[$htype]{$pkg};
264	0	1062	}
265	}	1063	}
266		1064
267	=back	1065	our $AUTOLOAD;
		1066
		1067	sub AUTOLOAD {
		1068	$AUTOLOAD =~ /:([^:]+)$/
		1069	or die "FATAL: \$AUTOLOAD '$AUTOLOAD' unparsable";
		1070
		1071	eval qq{
		1072	sub $AUTOLOAD {
		1073	my \$proxy = shift;
		1074	\$proxy->{term}->$1 (\@_)
		1075	}
		1076	1
		1077	} or die "FATAL: unable to compile method forwarder: $@";
		1078
		1079	goto &$AUTOLOAD;
		1080	}
		1081
		1082	sub DESTROY {
		1083	# nop
		1084	}
		1085
		1086	# urxvt::destroy_hook
		1087
		1088	sub urxvt::destroy_hook::DESTROY {
		1089	${$_[0]}->();
		1090	}
		1091
		1092	sub urxvt::destroy_hook(&) {
		1093	bless \shift, urxvt::destroy_hook::
		1094	}
		1095
		1096	package urxvt::anyevent;
		1097
		1098	=head2 The C<urxvt::anyevent> Class
		1099
		1100	The sole purpose of this class is to deliver an interface to the
		1101	C<AnyEvent> module - any module using it will work inside urxvt without
		1102	further programming. The only exception is that you cannot wait on
		1103	condition variables, but non-blocking condvar use is ok. What this means
		1104	is that you cannot use blocking APIs, but the non-blocking variant should
		1105	work.
		1106
		1107	=cut
		1108
		1109	our $VERSION = '3.4';
		1110
		1111	$INC{"urxvt/anyevent.pm"} = 1; # mark us as there
		1112	push @AnyEvent::REGISTRY, [urxvt => urxvt::anyevent::];
		1113
		1114	sub timer {
		1115	my ($class, %arg) = @_;
		1116
		1117	my $cb = $arg{cb};
		1118
		1119	urxvt::timer
		1120	->new
		1121	->start (urxvt::NOW + $arg{after})
		1122	->cb (sub {
		1123	$_[0]->stop; # need to cancel manually
		1124	$cb->();
		1125	})
		1126	}
		1127
		1128	sub io {
		1129	my ($class, %arg) = @_;
		1130
		1131	my $cb = $arg{cb};
		1132
		1133	bless [$arg{fh}, urxvt::iow
		1134	->new
		1135	->fd (fileno $arg{fh})
		1136	->events (($arg{poll} =~ /r/ ? 1 : 0)
		1137	| ($arg{poll} =~ /w/ ? 2 : 0))
		1138	->start
		1139	->cb (sub {
		1140	$cb->(($_[1] & 1 ? 'r' : '')
		1141	. ($_[1] & 2 ? 'w' : ''));
		1142	})],
		1143	urxvt::anyevent::
		1144	}
		1145
		1146	sub DESTROY {
		1147	$_[0][1]->stop;
		1148	}
		1149
		1150	sub one_event {
		1151	Carp::croak "AnyEvent->one_event blocking wait unsupported in urxvt, use a non-blocking API";
		1152	}
		1153
		1154	package urxvt::term;
268		1155
269	=head2 The C<urxvt::term> Class	1156	=head2 The C<urxvt::term> Class
270		1157
271	=over 4	1158	=over 4
		1159
		1160	=cut
		1161
		1162	# find on_xxx subs in the package and register them
		1163	# as hooks
		1164	sub register_package {
		1165	my ($self, $pkg, $argv) = @_;
		1166
		1167	no strict 'refs';
		1168
		1169	urxvt::verbose 6, "register package $pkg to $self";
		1170
		1171	@{"$pkg\::ISA"} = urxvt::term::extension::;
		1172
		1173	my $proxy = bless {
		1174	_pkg => $pkg,
		1175	argv => $argv,
		1176	}, $pkg;
		1177	Scalar::Util::weaken ($proxy->{term} = $self);
		1178
		1179	$self->{_pkg}{$pkg} = $proxy;
		1180
		1181	for my $name (@HOOKNAME) {
		1182	if (my $ref = $pkg->can ("on_" . lc $name)) {
		1183	$proxy->enable ($name => $ref);
		1184	}
		1185	}
		1186	}
		1187
		1188	=item $term = new urxvt::term $envhashref, $rxvtname, [arg...]
		1189
		1190	Creates a new terminal, very similar as if you had started it with system
		1191	C<$rxvtname, arg...>. C<$envhashref> must be a reference to a C<%ENV>-like
		1192	hash which defines the environment of the new terminal.
		1193
		1194	Croaks (and probably outputs an error message) if the new instance
		1195	couldn't be created. Returns C<undef> if the new instance didn't
		1196	initialise perl, and the terminal object otherwise. The C<init> and
		1197	C<start> hooks will be called before this call returns, and are free to
		1198	refer to global data (which is race free).
		1199
		1200	=cut
		1201
		1202	sub new {
		1203	my ($class, $env, @args) = @_;
		1204
		1205	$env or Carp::croak "environment hash missing in call to urxvt::term->new";
		1206	@args or Carp::croak "name argument missing in call to urxvt::term->new";
		1207
		1208	_new ([ map "$_=$env->{$_}", keys %$env ], \@args);
		1209	}
		1210
		1211	=item $term->destroy
		1212
		1213	Destroy the terminal object (close the window, free resources
		1214	etc.). Please note that @@RXVT_NAME@@ will not exit as long as any event
		1215	watchers (timers, io watchers) are still active.
		1216
		1217	=item $term->exec_async ($cmd[, @args])
		1218
		1219	Works like the combination of the C<fork>/C<exec> builtins, which executes
		1220	("starts") programs in the background. This function takes care of setting
		1221	the user environment before exec'ing the command (e.g. C<PATH>) and should
		1222	be preferred over explicit calls to C<exec> or C<system>.
		1223
		1224	Returns the pid of the subprocess or C<undef> on error.
		1225
		1226	=cut
		1227
		1228	sub exec_async {
		1229	my $self = shift;
		1230
		1231	my $pid = fork;
		1232
		1233	return $pid
		1234	if !defined $pid or $pid;
		1235
		1236	%ENV = %{ $self->env };
		1237
		1238	exec @_;
		1239	urxvt::_exit 255;
		1240	}
		1241
		1242	=item $isset = $term->option ($optval[, $set])
		1243
		1244	Returns true if the option specified by C<$optval> is enabled, and
		1245	optionally change it. All option values are stored by name in the hash
		1246	C<%urxvt::OPTION>. Options not enabled in this binary are not in the hash.
		1247
		1248	Here is a likely non-exhaustive list of option names, please see the
		1249	source file F</src/optinc.h> to see the actual list:
		1250
		1251	borderLess console cursorBlink cursorUnderline hold iconic insecure
		1252	intensityStyles jumpScroll loginShell mapAlert meta8 mouseWheelScrollPage
		1253	override-redirect pastableTabs pointerBlank reverseVideo scrollBar
		1254	scrollBar_floating scrollBar_right scrollTtyKeypress scrollTtyOutput
		1255	scrollWithBuffer secondaryScreen secondaryScroll skipBuiltinGlyphs
		1256	transparent tripleclickwords utmpInhibit visualBell
272		1257
273	=item $value = $term->resource ($name[, $newval])	1258	=item $value = $term->resource ($name[, $newval])
274		1259
275	Returns the current resource value associated with a given name and	1260	Returns the current resource value associated with a given name and
276	optionally sets a new value. Setting values is most useful in the C<init>	1261	optionally sets a new value. Setting values is most useful in the C<init>
…		…
285	likely change).	1270	likely change).
286		1271
287	Please note that resource strings will currently only be freed when the	1272	Please note that resource strings will currently only be freed when the
288	terminal is destroyed, so changing options frequently will eat memory.	1273	terminal is destroyed, so changing options frequently will eat memory.
289		1274
290	Here is a a likely non-exhaustive list of resource names, not all of which	1275	Here is a likely non-exhaustive list of resource names, not all of which
291	are supported in every build, please see the source to see the actual	1276	are supported in every build, please see the source file F</src/rsinc.h>
292	list:	1277	to see the actual list:
293		1278
294	answerbackstring backgroundPixmap backspace_key boldFont boldItalicFont	1279	answerbackstring backgroundPixmap backspace_key boldFont boldItalicFont
295	borderLess color cursorBlink cursorUnderline cutchars delete_key	1280	borderLess chdir color cursorBlink cursorUnderline cutchars delete_key
296	display_name embed ext_bwidth fade font geometry hold iconName	1281	display_name embed ext_bwidth fade font geometry hold iconName
297	imFont imLocale inputMethod insecure int_bwidth intensityStyles	1282	imFont imLocale inputMethod insecure int_bwidth intensityStyles
298	italicFont jumpScroll lineSpace loginShell mapAlert menu meta8 modifier	1283	italicFont jumpScroll lineSpace loginShell mapAlert meta8 modifier
299	mouseWheelScrollPage name pastableTabs path perl_eval perl_ext	1284	mouseWheelScrollPage name override_redirect pastableTabs path perl_eval
300	perl_lib pointerBlank pointerBlankDelay preeditType print_pipe pty_fd	1285	perl_ext_1 perl_ext_2 perl_lib pointerBlank pointerBlankDelay
301	reverseVideo saveLines scrollBar scrollBar_align scrollBar_floating	1286	preeditType print_pipe pty_fd reverseVideo saveLines scrollBar
302	scrollBar_right scrollBar_thickness scrollTtyKeypress scrollTtyOutput	1287	scrollBar_align scrollBar_floating scrollBar_right scrollBar_thickness
303	scrollWithBuffer scrollstyle secondaryScreen secondaryScroll selectstyle	1288	scrollTtyKeypress scrollTtyOutput scrollWithBuffer scrollstyle
304	shade term_name title transparent transparent_all tripleclickwords	1289	secondaryScreen secondaryScroll shade term_name title
305	utmpInhibit visualBell	1290	transient_for transparent transparent_all tripleclickwords utmpInhibit
		1291	visualBell
306		1292
307	=cut	1293	=cut
308		1294
309	sub urxvt::term::resource($$;$) {	1295	sub resource($$;$) {
310	my ($self, $name) = (shift, shift);	1296	my ($self, $name) = (shift, shift);
311	unshift @_, $self, $name, ($name =~ s/\s*\+\s*(\d+)$// ? $1 : 0);	1297	unshift @_, $self, $name, ($name =~ s/\s*\+\s*(\d+)$// ? $1 : 0);
312	goto &urxvt::term::_resource;	1298	goto &urxvt::term::_resource
313	}	1299	}
		1300
		1301	=item $value = $term->x_resource ($pattern)
		1302
		1303	Returns the X-Resource for the given pattern, excluding the program or
		1304	class name, i.e. C<< $term->x_resource ("boldFont") >> should return the
		1305	same value as used by this instance of rxvt-unicode. Returns C<undef> if no
		1306	resource with that pattern exists.
		1307
		1308	This method should only be called during the C<on_start> hook, as there is
		1309	only one resource database per display, and later invocations might return
		1310	the wrong resources.
		1311
		1312	=item $success = $term->parse_keysym ($keysym_spec, $command_string)
		1313
		1314	Adds a keymap translation exactly as specified via a resource. See the
		1315	C<keysym> resource in the @@RXVT_NAME@@(1) manpage.
		1316
		1317	=item $rend = $term->rstyle ([$new_rstyle])
		1318
		1319	Return and optionally change the current rendition. Text that is output by
		1320	the terminal application will use this style.
		1321
		1322	=item ($row, $col) = $term->screen_cur ([$row, $col])
		1323
		1324	Return the current coordinates of the text cursor position and optionally
		1325	set it (which is usually bad as applications don't expect that).
314		1326
315	=item ($row, $col) = $term->selection_mark ([$row, $col])	1327	=item ($row, $col) = $term->selection_mark ([$row, $col])
316		1328
317	=item ($row, $col) = $term->selection_beg ([$row, $col])	1329	=item ($row, $col) = $term->selection_beg ([$row, $col])
318		1330
319	=item ($row, $col) = $term->selection_end ([$row, $col])	1331	=item ($row, $col) = $term->selection_end ([$row, $col])
320		1332
321	Return the current values of the selection mark, begin or end positions,	1333	Return the current values of the selection mark, begin or end positions,
322	and optionally set them to new values.	1334	and optionally set them to new values.
323		1335
		1336	=item $term->selection_make ($eventtime[, $rectangular])
		1337
		1338	Tries to make a selection as set by C<selection_beg> and
		1339	C<selection_end>. If C<$rectangular> is true (default: false), a
		1340	rectangular selection will be made. This is the prefered function to make
		1341	a selection.
		1342
324	=item $success = $term->selection_grab ($eventtime)	1343	=item $success = $term->selection_grab ($eventtime)
325		1344
326	Try to request the primary selection from the server (for example, as set	1345	Try to request the primary selection text from the server (for example, as
327	by the next method).	1346	set by the next method). No visual feedback will be given. This function
		1347	is mostly useful from within C<on_sel_grab> hooks.
328		1348
329	=item $oldtext = $term->selection ([$newtext])	1349	=item $oldtext = $term->selection ([$newtext])
330		1350
331	Return the current selection text and optionally replace it by C<$newtext>.	1351	Return the current selection text and optionally replace it by C<$newtext>.
332		1352
333	=item $term->scr_overlay ($x, $y, $text)	1353	=item $term->overlay_simple ($x, $y, $text)
334		1354
335	Create a simple multi-line overlay box. See the next method for details.	1355	Create a simple multi-line overlay box. See the next method for details.
336		1356
337	=cut	1357	=cut
338		1358
339	sub urxvt::term::scr_overlay {	1359	sub overlay_simple {
340	my ($self, $x, $y, $text) = @_;	1360	my ($self, $x, $y, $text) = @_;
341		1361
342	my @lines = split /\n/, $text;	1362	my @lines = split /\n/, $text;
343		1363
344	my $w = 0;	1364	my $w = List::Util::max map $self->strwidth ($_), @lines;
345	for (map $self->strwidth ($_), @lines) {
346	$w = $_ if $w < $_;
347	}
348		1365
349	$self->scr_overlay_new ($x, $y, $w, scalar @lines);	1366	my $overlay = $self->overlay ($x, $y, $w, scalar @lines);
350	$self->scr_overlay_set (0, $_, $lines[$_]) for 0.. $#lines;	1367	$overlay->set (0, $_, $lines[$_]) for 0.. $#lines;
351	}
352		1368
		1369	$overlay
		1370	}
		1371
353	=item $term->scr_overlay_new ($x, $y, $width, $height)	1372	=item $term->overlay ($x, $y, $width, $height[, $rstyle[, $border]])
354		1373
355	Create a new (empty) overlay at the given position with the given	1374	Create a new (empty) overlay at the given position with the given
356	width/height. A border will be put around the box. If either C<$x> or	1375	width/height. C<$rstyle> defines the initial rendition style
357	C<$y> is negative, then this is counted from the right/bottom side,	1376	(default: C<OVERLAY_RSTYLE>).
358	respectively.
359		1377
360	=item $term->scr_overlay_off	1378	If C<$border> is C<2> (default), then a decorative border will be put
		1379	around the box.
361		1380
362	Switch the overlay off again.	1381	If either C<$x> or C<$y> is negative, then this is counted from the
		1382	right/bottom side, respectively.
363		1383
364	=item $term->scr_overlay_set_char ($x, $y, $char, $rend = OVERLAY_RSTYLE)	1384	This method returns an urxvt::overlay object. The overlay will be visible
		1385	as long as the perl object is referenced.
365		1386
366	Put a single character (specified numerically) at the given overlay	1387	The methods currently supported on C<urxvt::overlay> objects are:
367	position.
368		1388
		1389	=over 4
		1390
369	=item $term->scr_overlay_set ($x, $y, $text)	1391	=item $overlay->set ($x, $y, $text, $rend)
370		1392
371	Write a string at the given position into the overlay.	1393	Similar to C<< $term->ROW_t >> and C<< $term->ROW_r >> in that it puts
		1394	text in rxvt-unicode's special encoding and an array of rendition values
		1395	at a specific position inside the overlay.
372		1396
		1397	=item $overlay->hide
		1398
		1399	If visible, hide the overlay, but do not destroy it.
		1400
		1401	=item $overlay->show
		1402
		1403	If hidden, display the overlay again.
		1404
		1405	=back
		1406
		1407	=item $popup = $term->popup ($event)
		1408
		1409	Creates a new C<urxvt::popup> object that implements a popup menu. The
		1410	C<$event> I<must> be the event causing the menu to pop up (a button event,
		1411	currently).
		1412
		1413	=cut
		1414
		1415	sub popup {
		1416	my ($self, $event) = @_;
		1417
		1418	$self->grab ($event->{time}, 1)
		1419	or return;
		1420
		1421	my $popup = bless {
		1422	term => $self,
		1423	event => $event,
		1424	}, urxvt::popup::;
		1425
		1426	Scalar::Util::weaken $popup->{term};
		1427
		1428	$self->{_destroy}{$popup} = urxvt::destroy_hook { $popup->{popup}->destroy };
		1429	Scalar::Util::weaken $self->{_destroy}{$popup};
		1430
		1431	$popup
		1432	}
		1433
373	=item $cellwidth = $term->strwidth $string	1434	=item $cellwidth = $term->strwidth ($string)
374		1435
375	Returns the number of screen-cells this string would need. Correctly	1436	Returns the number of screen-cells this string would need. Correctly
376	accounts for wide and combining characters.	1437	accounts for wide and combining characters.
377		1438
378	=item $octets = $term->locale_encode $string	1439	=item $octets = $term->locale_encode ($string)
379		1440
380	Convert the given text string into the corresponding locale encoding.	1441	Convert the given text string into the corresponding locale encoding.
381		1442
382	=item $string = $term->locale_decode $octets	1443	=item $string = $term->locale_decode ($octets)
383		1444
384	Convert the given locale-encoded octets into a perl string.	1445	Convert the given locale-encoded octets into a perl string.
385		1446
		1447	=item $term->scr_xor_span ($beg_row, $beg_col, $end_row, $end_col[, $rstyle])
		1448
		1449	XORs the rendition values in the given span with the provided value
		1450	(default: C<RS_RVid>), which I<MUST NOT> contain font styles. Useful in
		1451	refresh hooks to provide effects similar to the selection.
		1452
		1453	=item $term->scr_xor_rect ($beg_row, $beg_col, $end_row, $end_col[, $rstyle1[, $rstyle2]])
		1454
		1455	Similar to C<scr_xor_span>, but xors a rectangle instead. Trailing
		1456	whitespace will additionally be xored with the C<$rstyle2>, which defaults
		1457	to C<RS_RVid | RS_Uline>, which removes reverse video again and underlines
		1458	it instead. Both styles I<MUST NOT> contain font styles.
		1459
		1460	=item $term->scr_bell
		1461
		1462	Ring the bell!
		1463
		1464	=item $term->scr_add_lines ($string)
		1465
		1466	Write the given text string to the screen, as if output by the application
		1467	running inside the terminal. It may not contain command sequences (escape
		1468	codes), but is free to use line feeds, carriage returns and tabs. The
		1469	string is a normal text string, not in locale-dependent encoding.
		1470
		1471	Normally its not a good idea to use this function, as programs might be
		1472	confused by changes in cursor position or scrolling. Its useful inside a
		1473	C<on_add_lines> hook, though.
		1474
		1475	=item $term->scr_change_screen ($screen)
		1476
		1477	Switch to given screen - 0 primary, 1 secondary.
		1478
		1479	=item $term->cmd_parse ($octets)
		1480
		1481	Similar to C<scr_add_lines>, but the argument must be in the
		1482	locale-specific encoding of the terminal and can contain command sequences
		1483	(escape codes) that will be interpreted.
		1484
386	=item $term->tt_write ($octets)	1485	=item $term->tt_write ($octets)
387		1486
388	Write the octets given in C<$data> to the tty (i.e. as program input). To	1487	Write the octets given in C<$data> to the tty (i.e. as program input). To
389	pass characters instead of octets, you should convetr you strings first to	1488	pass characters instead of octets, you should convert your strings first
390	the locale-specific encoding using C<< $term->locale_encode >>.	1489	to the locale-specific encoding using C<< $term->locale_encode >>.
		1490
		1491	=item $old_events = $term->pty_ev_events ([$new_events])
		1492
		1493	Replaces the event mask of the pty watcher by the given event mask. Can
		1494	be used to suppress input and output handling to the pty/tty. See the
		1495	description of C<< urxvt::timer->events >>. Make sure to always restore
		1496	the previous value.
		1497
		1498	=item $fd = $term->pty_fd
		1499
		1500	Returns the master file descriptor for the pty in use, or C<-1> if no pty
		1501	is used.
		1502
		1503	=item $windowid = $term->parent
		1504
		1505	Return the window id of the toplevel window.
		1506
		1507	=item $windowid = $term->vt
		1508
		1509	Return the window id of the terminal window.
		1510
		1511	=item $term->vt_emask_add ($x_event_mask)
		1512
		1513	Adds the specified events to the vt event mask. Useful e.g. when you want
		1514	to receive pointer events all the times:
		1515
		1516	$term->vt_emask_add (urxvt::PointerMotionMask);
		1517
		1518	=item $term->focus_in
		1519
		1520	=item $term->focus_out
		1521
		1522	=item $term->key_press ($state, $keycode[, $time])
		1523
		1524	=item $term->key_release ($state, $keycode[, $time])
		1525
		1526	Deliver various fake events to to terminal.
		1527
		1528	=item $window_width = $term->width
		1529
		1530	=item $window_height = $term->height
		1531
		1532	=item $font_width = $term->fwidth
		1533
		1534	=item $font_height = $term->fheight
		1535
		1536	=item $font_ascent = $term->fbase
		1537
		1538	=item $terminal_rows = $term->nrow
		1539
		1540	=item $terminal_columns = $term->ncol
		1541
		1542	=item $has_focus = $term->focus
		1543
		1544	=item $is_mapped = $term->mapped
		1545
		1546	=item $max_scrollback = $term->saveLines
		1547
		1548	=item $nrow_plus_saveLines = $term->total_rows
		1549
		1550	=item $topmost_scrollback_row = $term->top_row
		1551
		1552	Return various integers describing terminal characteristics.
		1553
		1554	=item $x_display = $term->display_id
		1555
		1556	Return the DISPLAY used by rxvt-unicode.
		1557
		1558	=item $lc_ctype = $term->locale
		1559
		1560	Returns the LC_CTYPE category string used by this rxvt-unicode.
		1561
		1562	=item $env = $term->env
		1563
		1564	Returns a copy of the environment in effect for the terminal as a hashref
		1565	similar to C<\%ENV>.
		1566
		1567	=item @envv = $term->envv
		1568
		1569	Returns the environment as array of strings of the form C<VAR=VALUE>.
		1570
		1571	=item @argv = $term->argv
		1572
		1573	Return the argument vector as this terminal, similar to @ARGV, but
		1574	includes the program name as first element.
		1575
		1576	=cut
		1577
		1578	sub env {
		1579	+{ map /^([^=]+)(?:=(.*))?$/s && ($1 => $2), $_[0]->envv }
		1580	}
		1581
		1582	=item $modifiermask = $term->ModLevel3Mask
		1583
		1584	=item $modifiermask = $term->ModMetaMask
		1585
		1586	=item $modifiermask = $term->ModNumLockMask
		1587
		1588	Return the modifier masks corresponding to the "ISO Level 3 Shift" (often
		1589	AltGr), the meta key (often Alt) and the num lock key, if applicable.
		1590
		1591	=item $screen = $term->current_screen
		1592
		1593	Returns the currently displayed screen (0 primary, 1 secondary).
		1594
		1595	=item $cursor_is_hidden = $term->hidden_cursor
		1596
		1597	Returns whether the cursor is currently hidden or not.
		1598
		1599	=item $view_start = $term->view_start ([$newvalue])
		1600
		1601	Returns the row number of the topmost displayed line. Maximum value is
		1602	C<0>, which displays the normal terminal contents. Lower values scroll
		1603	this many lines into the scrollback buffer.
		1604
		1605	=item $term->want_refresh
		1606
		1607	Requests a screen refresh. At the next opportunity, rxvt-unicode will
		1608	compare the on-screen display with its stored representation. If they
		1609	differ, it redraws the differences.
		1610
		1611	Used after changing terminal contents to display them.
		1612
		1613	=item $text = $term->ROW_t ($row_number[, $new_text[, $start_col]])
		1614
		1615	Returns the text of the entire row with number C<$row_number>. Row C<< $term->top_row >>
		1616	is the topmost terminal line, row C<< $term->nrow-1 >> is the bottommost
		1617	terminal line. Nothing will be returned if a nonexistent line
		1618	is requested.
		1619
		1620	If C<$new_text> is specified, it will replace characters in the current
		1621	line, starting at column C<$start_col> (default C<0>), which is useful
		1622	to replace only parts of a line. The font index in the rendition will
		1623	automatically be updated.
		1624
		1625	C<$text> is in a special encoding: tabs and wide characters that use more
		1626	than one cell when displayed are padded with C<$urxvt::NOCHAR> (chr 65535)
		1627	characters. Characters with combining characters and other characters that
		1628	do not fit into the normal text encoding will be replaced with characters
		1629	in the private use area.
		1630
		1631	You have to obey this encoding when changing text. The advantage is
		1632	that C<substr> and similar functions work on screen cells and not on
		1633	characters.
		1634
		1635	The methods C<< $term->special_encode >> and C<< $term->special_decode >>
		1636	can be used to convert normal strings into this encoding and vice versa.
		1637
		1638	=item $rend = $term->ROW_r ($row_number[, $new_rend[, $start_col]])
		1639
		1640	Like C<< $term->ROW_t >>, but returns an arrayref with rendition
		1641	bitsets. Rendition bitsets contain information about colour, font, font
		1642	styles and similar information. See also C<< $term->ROW_t >>.
		1643
		1644	When setting rendition, the font mask will be ignored.
		1645
		1646	See the section on RENDITION, above.
		1647
		1648	=item $length = $term->ROW_l ($row_number[, $new_length])
		1649
		1650	Returns the number of screen cells that are in use ("the line
		1651	length"). Unlike the urxvt core, this returns C<< $term->ncol >> if the
		1652	line is joined with the following one.
		1653
		1654	=item $bool = $term->is_longer ($row_number)
		1655
		1656	Returns true if the row is part of a multiple-row logical "line" (i.e.
		1657	joined with the following row), which means all characters are in use
		1658	and it is continued on the next row (and possibly a continuation of the
		1659	previous row(s)).
		1660
		1661	=item $line = $term->line ($row_number)
		1662
		1663	Create and return a new C<urxvt::line> object that stores information
		1664	about the logical line that row C<$row_number> is part of. It supports the
		1665	following methods:
		1666
		1667	=over 4
		1668
		1669	=item $text = $line->t ([$new_text])
		1670
		1671	Returns or replaces the full text of the line, similar to C<ROW_t>
		1672
		1673	=item $rend = $line->r ([$new_rend])
		1674
		1675	Returns or replaces the full rendition array of the line, similar to C<ROW_r>
		1676
		1677	=item $length = $line->l
		1678
		1679	Returns the length of the line in cells, similar to C<ROW_l>.
		1680
		1681	=item $rownum = $line->beg
		1682
		1683	=item $rownum = $line->end
		1684
		1685	Return the row number of the first/last row of the line, respectively.
		1686
		1687	=item $offset = $line->offset_of ($row, $col)
		1688
		1689	Returns the character offset of the given row|col pair within the logical
		1690	line. Works for rows outside the line, too, and returns corresponding
		1691	offsets outside the string.
		1692
		1693	=item ($row, $col) = $line->coord_of ($offset)
		1694
		1695	Translates a string offset into terminal coordinates again.
391		1696
392	=back	1697	=back
		1698
		1699	=cut
		1700
		1701	sub line {
		1702	my ($self, $row) = @_;
		1703
		1704	my $maxrow = $self->nrow - 1;
		1705
		1706	my ($beg, $end) = ($row, $row);
		1707
		1708	--$beg while $self->ROW_is_longer ($beg - 1);
		1709	++$end while $self->ROW_is_longer ($end) && $end < $maxrow;
		1710
		1711	bless {
		1712	term => $self,
		1713	beg => $beg,
		1714	end => $end,
		1715	ncol => $self->ncol,
		1716	len => ($end - $beg) * $self->ncol + $self->ROW_l ($end),
		1717	}, urxvt::line::
		1718	}
		1719
		1720	sub urxvt::line::t {
		1721	my ($self) = @_;
		1722
		1723	if (@_ > 1)
		1724	{
		1725	$self->{term}->ROW_t ($_, $_[1], 0, ($_ - $self->{beg}) * $self->{ncol}, $self->{ncol})
		1726	for $self->{beg} .. $self->{end};
		1727	}
		1728
		1729	defined wantarray &&
		1730	substr +(join "", map $self->{term}->ROW_t ($_), $self->{beg} .. $self->{end}),
		1731	0, $self->{len}
		1732	}
		1733
		1734	sub urxvt::line::r {
		1735	my ($self) = @_;
		1736
		1737	if (@_ > 1)
		1738	{
		1739	$self->{term}->ROW_r ($_, $_[1], 0, ($_ - $self->{beg}) * $self->{ncol}, $self->{ncol})
		1740	for $self->{beg} .. $self->{end};
		1741	}
		1742
		1743	if (defined wantarray) {
		1744	my $rend = [
		1745	map @{ $self->{term}->ROW_r ($_) }, $self->{beg} .. $self->{end}
		1746	];
		1747	$#$rend = $self->{len} - 1;
		1748	return $rend;
		1749	}
		1750
		1751	()
		1752	}
		1753
		1754	sub urxvt::line::beg { $_[0]{beg} }
		1755	sub urxvt::line::end { $_[0]{end} }
		1756	sub urxvt::line::l { $_[0]{len} }
		1757
		1758	sub urxvt::line::offset_of {
		1759	my ($self, $row, $col) = @_;
		1760
		1761	($row - $self->{beg}) * $self->{ncol} + $col
		1762	}
		1763
		1764	sub urxvt::line::coord_of {
		1765	my ($self, $offset) = @_;
		1766
		1767	use integer;
		1768
		1769	(
		1770	$offset / $self->{ncol} + $self->{beg},
		1771	$offset % $self->{ncol}
		1772	)
		1773	}
		1774
		1775	=item $text = $term->special_encode $string
		1776
		1777	Converts a perl string into the special encoding used by rxvt-unicode,
		1778	where one character corresponds to one screen cell. See
		1779	C<< $term->ROW_t >> for details.
		1780
		1781	=item $string = $term->special_decode $text
		1782
		1783	Converts rxvt-unicodes text representation into a perl string. See
		1784	C<< $term->ROW_t >> for details.
		1785
		1786	=item $success = $term->grab_button ($button, $modifiermask[, $window = $term->vt])
		1787
		1788	=item $term->ungrab_button ($button, $modifiermask[, $window = $term->vt])
		1789
		1790	Register/unregister a synchronous button grab. See the XGrabButton
		1791	manpage.
		1792
		1793	=item $success = $term->grab ($eventtime[, $sync])
		1794
		1795	Calls XGrabPointer and XGrabKeyboard in asynchronous (default) or
		1796	synchronous (C<$sync> is true). Also remembers the grab timestamp.
		1797
		1798	=item $term->allow_events_async
		1799
		1800	Calls XAllowEvents with AsyncBoth for the most recent grab.
		1801
		1802	=item $term->allow_events_sync
		1803
		1804	Calls XAllowEvents with SyncBoth for the most recent grab.
		1805
		1806	=item $term->allow_events_replay
		1807
		1808	Calls XAllowEvents with both ReplayPointer and ReplayKeyboard for the most
		1809	recent grab.
		1810
		1811	=item $term->ungrab
		1812
		1813	Calls XUngrab for the most recent grab. Is called automatically on
		1814	evaluation errors, as it is better to lose the grab in the error case as
		1815	the session.
		1816
		1817	=item $atom = $term->XInternAtom ($atom_name[, $only_if_exists])
		1818
		1819	=item $atom_name = $term->XGetAtomName ($atom)
		1820
		1821	=item @atoms = $term->XListProperties ($window)
		1822
		1823	=item ($type,$format,$octets) = $term->XGetWindowProperty ($window, $property)
		1824
		1825	=item $term->XChangeProperty ($window, $property, $type, $format, $octets)
		1826
		1827	=item $term->XDeleteProperty ($window, $property)
		1828
		1829	=item $window = $term->DefaultRootWindow
		1830
		1831	=item $term->XReparentWindow ($window, $parent, [$x, $y])
		1832
		1833	=item $term->XMapWindow ($window)
		1834
		1835	=item $term->XUnmapWindow ($window)
		1836
		1837	=item $term->XMoveResizeWindow ($window, $x, $y, $width, $height)
		1838
		1839	=item ($x, $y, $child_window) = $term->XTranslateCoordinates ($src, $dst, $x, $y)
		1840
		1841	=item $term->XChangeInput ($window, $add_events[, $del_events])
		1842
		1843	Various X or X-related functions. The C<$term> object only serves as
		1844	the source of the display, otherwise those functions map more-or-less
		1845	directory onto the X functions of the same name.
		1846
		1847	=back
		1848
		1849	=cut
		1850
		1851	package urxvt::popup;
		1852
		1853	=head2 The C<urxvt::popup> Class
		1854
		1855	=over 4
		1856
		1857	=cut
		1858
		1859	sub add_item {
		1860	my ($self, $item) = @_;
		1861
		1862	$item->{rend}{normal} = "\x1b[0;30;47m" unless exists $item->{rend}{normal};
		1863	$item->{rend}{hover} = "\x1b[0;30;46m" unless exists $item->{rend}{hover};
		1864	$item->{rend}{active} = "\x1b[m" unless exists $item->{rend}{active};
		1865
		1866	$item->{render} ||= sub { $_[0]{text} };
		1867
		1868	push @{ $self->{item} }, $item;
		1869	}
		1870
		1871	=item $popup->add_title ($title)
		1872
		1873	Adds a non-clickable title to the popup.
		1874
		1875	=cut
		1876
		1877	sub add_title {
		1878	my ($self, $title) = @_;
		1879
		1880	$self->add_item ({
		1881	rend => { normal => "\x1b[38;5;11;44m", hover => "\x1b[38;5;11;44m", active => "\x1b[38;5;11;44m" },
		1882	text => $title,
		1883	activate => sub { },
		1884	});
		1885	}
		1886
		1887	=item $popup->add_separator ([$sepchr])
		1888
		1889	Creates a separator, optionally using the character given as C<$sepchr>.
		1890
		1891	=cut
		1892
		1893	sub add_separator {
		1894	my ($self, $sep) = @_;
		1895
		1896	$sep ||= "=";
		1897
		1898	$self->add_item ({
		1899	rend => { normal => "\x1b[0;30;47m", hover => "\x1b[0;30;47m", active => "\x1b[0;30;47m" },
		1900	text => "",
		1901	render => sub { $sep x $self->{term}->ncol },
		1902	activate => sub { },
		1903	});
		1904	}
		1905
		1906	=item $popup->add_button ($text, $cb)
		1907
		1908	Adds a clickable button to the popup. C<$cb> is called whenever it is
		1909	selected.
		1910
		1911	=cut
		1912
		1913	sub add_button {
		1914	my ($self, $text, $cb) = @_;
		1915
		1916	$self->add_item ({ type => "button", text => $text, activate => $cb});
		1917	}
		1918
		1919	=item $popup->add_toggle ($text, $initial_value, $cb)
		1920
		1921	Adds a toggle/checkbox item to the popup. The callback gets called
		1922	whenever it gets toggled, with a boolean indicating its new value as its
		1923	first argument.
		1924
		1925	=cut
		1926
		1927	sub add_toggle {
		1928	my ($self, $text, $value, $cb) = @_;
		1929
		1930	my $item; $item = {
		1931	type => "button",
		1932	text => " $text",
		1933	value => $value,
		1934	render => sub { ($_[0]{value} ? "* " : " ") . $text },
		1935	activate => sub { $cb->($_[1]{value} = !$_[1]{value}); },
		1936	};
		1937
		1938	$self->add_item ($item);
		1939	}
		1940
		1941	=item $popup->show
		1942
		1943	Displays the popup (which is initially hidden).
		1944
		1945	=cut
		1946
		1947	sub show {
		1948	my ($self) = @_;
		1949
		1950	local $urxvt::popup::self = $self;
		1951
		1952	my $env = $self->{term}->env;
		1953	# we can't hope to reproduce the locale algorithm, so nuke LC_ALL and set LC_CTYPE.
		1954	delete $env->{LC_ALL};
		1955	$env->{LC_CTYPE} = $self->{term}->locale;
		1956
		1957	my $term = urxvt::term->new (
		1958	$env, "popup",
		1959	"--perl-lib" => "", "--perl-ext-common" => "",
		1960	"-pty-fd" => -1, "-sl" => 0,
		1961	"-b" => 1, "-bd" => "grey80", "-bl", "-override-redirect",
		1962	"--transient-for" => $self->{term}->parent,
		1963	"-display" => $self->{term}->display_id,
		1964	"-pe" => "urxvt-popup",
		1965	) or die "unable to create popup window\n";
		1966
		1967	unless (delete $term->{urxvt_popup_init_done}) {
		1968	$term->ungrab;
		1969	$term->destroy;
		1970	die "unable to initialise popup window\n";
		1971	}
		1972	}
		1973
		1974	sub DESTROY {
		1975	my ($self) = @_;
		1976
		1977	delete $self->{term}{_destroy}{$self};
		1978	$self->{term}->ungrab;
		1979	}
		1980
		1981	=back
		1982
		1983	=cut
		1984
		1985	package urxvt::watcher;
393		1986
394	=head2 The C<urxvt::timer> Class	1987	=head2 The C<urxvt::timer> Class
395		1988
396	This class implements timer watchers/events. Time is represented as a	1989	This class implements timer watchers/events. Time is represented as a
397	fractional number of seconds since the epoch. Example:	1990	fractional number of seconds since the epoch. Example:
398		1991
399	# create a digital clock display in upper right corner	1992	$term->{overlay} = $term->overlay (-1, 0, 8, 1, urxvt::OVERLAY_RSTYLE, 0);
400	$term->{timer} = urxvt::timer	1993	$term->{timer} = urxvt::timer
401	->new	1994	->new
402	->start (urxvt::NOW)	1995	->interval (1)
403	->cb (sub {	1996	->cb (sub {
404	my ($timer) = @_;
405	my $time = $timer->at;
406	$timer->start ($time + 1);
407	$self->scr_overlay (-1, 0,	1997	$term->{overlay}->set (0, 0,
408	POSIX::strftime "%H:%M:%S", localtime $time);	1998	sprintf "%2d:%02d:%02d", (localtime urxvt::NOW)[2,1,0]);
409	});	1999	});
410		2000
411	=over 4	2001	=over 4
412		2002
413	=item $timer = new urxvt::timer	2003	=item $timer = new urxvt::timer
414		2004
415	Create a new timer object in stopped state.	2005	Create a new timer object in started state. It is scheduled to fire
		2006	immediately.
416		2007
417	=item $timer = $timer->cb (sub { my ($timer) = @_; ... })	2008	=item $timer = $timer->cb (sub { my ($timer) = @_; ... })
418		2009
419	Set the callback to be called when the timer triggers.	2010	Set the callback to be called when the timer triggers.
420		2011
…		…
424		2015
425	=item $timer = $timer->set ($tstamp)	2016	=item $timer = $timer->set ($tstamp)
426		2017
427	Set the time the event is generated to $tstamp.	2018	Set the time the event is generated to $tstamp.
428		2019
		2020	=item $timer = $timer->interval ($interval)
		2021
		2022	Normally (and when C<$interval> is C<0>), the timer will automatically
		2023	stop after it has fired once. If C<$interval> is non-zero, then the timer
		2024	is automatically rescheduled at the given intervals.
		2025
429	=item $timer = $timer->start	2026	=item $timer = $timer->start
430		2027
431	Start the timer.	2028	Start the timer.
432		2029
433	=item $timer = $timer->start ($tstamp)	2030	=item $timer = $timer->start ($tstamp)
434		2031
435	Set the event trigger time to C<$tstamp> and start the timer.	2032	Set the event trigger time to C<$tstamp> and start the timer.
		2033
		2034	=item $timer = $timer->after ($delay)
		2035
		2036	Like C<start>, but sets the expiry timer to c<urxvt::NOW + $delay>.
436		2037
437	=item $timer = $timer->stop	2038	=item $timer = $timer->stop
438		2039
439	Stop the timer.	2040	Stop the timer.
440		2041
…		…
446		2047
447	$term->{socket} = ...	2048	$term->{socket} = ...
448	$term->{iow} = urxvt::iow	2049	$term->{iow} = urxvt::iow
449	->new	2050	->new
450	->fd (fileno $term->{socket})	2051	->fd (fileno $term->{socket})
451	->events (1) # wait for read data	2052	->events (urxvt::EV_READ)
452	->start	2053	->start
453	->cb (sub {	2054	->cb (sub {
454	my ($iow, $revents) = @_;	2055	my ($iow, $revents) = @_;
455	# $revents must be 1 here, no need to check	2056	# $revents must be 1 here, no need to check
456	sysread $term->{socket}, my $buf, 8192	2057	sysread $term->{socket}, my $buf, 8192
…		…
469	Set the callback to be called when io events are triggered. C<$reventmask>	2070	Set the callback to be called when io events are triggered. C<$reventmask>
470	is a bitset as described in the C<events> method.	2071	is a bitset as described in the C<events> method.
471		2072
472	=item $iow = $iow->fd ($fd)	2073	=item $iow = $iow->fd ($fd)
473		2074
474	Set the filedescriptor (not handle) to watch.	2075	Set the file descriptor (not handle) to watch.
475		2076
476	=item $iow = $iow->events ($eventmask)	2077	=item $iow = $iow->events ($eventmask)
477		2078
478	Set the event mask to watch. Bit #0 (value C<1>) enables watching for read	2079	Set the event mask to watch. The only allowed values are
479	data, Bit #1 (value C<2>) enables watching for write data.	2080	C<urxvt::EV_READ> and C<urxvt::EV_WRITE>, which might be ORed
		2081	together, or C<urxvt::EV_NONE>.
480		2082
481	=item $iow = $iow->start	2083	=item $iow = $iow->start
482		2084
483	Start watching for requested events on the given handle.	2085	Start watching for requested events on the given handle.
484		2086
485	=item $iow = $iow->stop	2087	=item $iow = $iow->stop
486		2088
487	Stop watching for events on the given filehandle.	2089	Stop watching for events on the given file handle.
		2090
		2091	=back
		2092
		2093	=head2 The C<urxvt::iw> Class
		2094
		2095	This class implements idle watchers, that get called automatically when
		2096	the process is idle. They should return as fast as possible, after doing
		2097	some useful work.
		2098
		2099	=over 4
		2100
		2101	=item $iw = new urxvt::iw
		2102
		2103	Create a new idle watcher object in stopped state.
		2104
		2105	=item $iw = $iw->cb (sub { my ($iw) = @_; ... })
		2106
		2107	Set the callback to be called when the watcher triggers.
		2108
		2109	=item $timer = $timer->start
		2110
		2111	Start the watcher.
		2112
		2113	=item $timer = $timer->stop
		2114
		2115	Stop the watcher.
		2116
		2117	=back
		2118
		2119	=head2 The C<urxvt::pw> Class
		2120
		2121	This class implements process watchers. They create an event whenever a
		2122	process exits, after which they stop automatically.
		2123
		2124	my $pid = fork;
		2125	...
		2126	$term->{pw} = urxvt::pw
		2127	->new
		2128	->start ($pid)
		2129	->cb (sub {
		2130	my ($pw, $exit_status) = @_;
		2131	...
		2132	});
		2133
		2134	=over 4
		2135
		2136	=item $pw = new urxvt::pw
		2137
		2138	Create a new process watcher in stopped state.
		2139
		2140	=item $pw = $pw->cb (sub { my ($pw, $exit_status) = @_; ... })
		2141
		2142	Set the callback to be called when the timer triggers.
		2143
		2144	=item $pw = $timer->start ($pid)
		2145
		2146	Tells the watcher to start watching for process C<$pid>.
		2147
		2148	=item $pw = $pw->stop
		2149
		2150	Stop the watcher.
488		2151
489	=back	2152	=back
490		2153
491	=head1 ENVIRONMENT	2154	=head1 ENVIRONMENT
492		2155
…		…
495	This variable controls the verbosity level of the perl extension. Higher	2158	This variable controls the verbosity level of the perl extension. Higher
496	numbers indicate more verbose output.	2159	numbers indicate more verbose output.
497		2160
498	=over 4	2161	=over 4
499		2162
500	=item 0 - only fatal messages	2163	=item == 0 - fatal messages
501		2164
502	=item 3 - script loading and management	2165	=item >= 3 - script loading and management
503		2166
504	=item 10 - all events received	2167	=item >=10 - all called hooks
		2168
		2169	=item >=11 - hook return values
505		2170
506	=back	2171	=back
507		2172
508	=head1 AUTHOR	2173	=head1 AUTHOR
509		2174
…		…
511	http://software.schmorp.de/pkg/rxvt-unicode	2176	http://software.schmorp.de/pkg/rxvt-unicode
512		2177
513	=cut	2178	=cut
514		2179
515	1	2180	1
		2181
		2182	# vim: sw=3:

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