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Revision 1.164 by root, Mon Dec 24 08:21:40 2007 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	* Put your scripts into F<@@RXVT_LIBDIR@@/urxvt/perl-ext/>, they will be loaded automatically.	9	# create a file grab_test in $HOME:
8
9	* Scripts are evaluated in a 'use strict' and 'use utf8' environment, and
10	thus must be encoded as UTF-8.
11		10
12	sub on_sel_grab {	11	sub on_sel_grab {
13	warn "you selected ", $_[0]->selection;	12	warn "you selected ", $_[0]->selection;
14	()	13	()
15	}	14	}
16		15
17	1	16	# start a @@RXVT_NAME@@ using it:
		17
		18	@@RXVT_NAME@@ --perl-lib $HOME -pe grab_test
18		19
19	=head1 DESCRIPTION	20	=head1 DESCRIPTION
20		21
21	On startup, @@RXVT_NAME@@ will scan F<@@RXVT_LIBDIR@@/urxvt/perl-ext/>	22	Every time a terminal object gets created, extension scripts specified via
22	for files and will load them. Everytime a terminal object gets created,	23	the C<perl> resource are loaded and associated with it.
23	the directory specified by the C<perl-lib> resource will be additionally	24
24	scanned.	25	Scripts are compiled in a 'use strict' and 'use utf8' environment, and
		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 for all terminals.	29	scripts will be shared (but not enabled) for all terminals.
28		30
29	Hooks in scripts specified by C<perl-lib> will only be called for the	31	You can disable the embedded perl interpreter by setting both "perl-ext"
30	terminals created with that specific option value.	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
31		381
32	=head2 General API Considerations	382	=head2 General API Considerations
33		383
34	All objects (such as terminals, time watchers etc.) are typical	384	All objects (such as terminals, time watchers etc.) are typical
35	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
36	like. The only reserved member is C<_ptr>, which must not be changed.	386	like. All members starting with an underscore (such as C<_ptr> or
		387	C<_hook>) are reserved for internal uses and B<MUST NOT> be accessed or
		388	modified).
37		389
38	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
39	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
40	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
41	terminal is destroyed.	393	terminal is destroyed.
42		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
43	=head2 Hooks	452	=head2 Hooks
44		453
45	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
46	whenever the relevant event happens.	455	called whenever the relevant event happens.
47		456
48	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
49	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
50	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.
51		463
52	When in doubt, return a false value (preferably C<()>).	464	I<< When in doubt, return a false value (preferably C<()>). >>
53		465
54	=over 4	466	=over 4
55		467
56	=item on_init $term	468	=item on_init $term
57		469
58	Called after a new terminal object has been initialized, but before	470	Called after a new terminal object has been initialized, but before
59	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).
60		486
61	=item on_reset $term	487	=item on_reset $term
62		488
63	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
64	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
65	variables.	491	variables.
66		492
67	=item on_start $term	493	=item on_child_start $term, $pid
68		494
69	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.
70	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>.
71		501
72	=item on_sel_make $term, $eventtime	502	=item on_sel_make $term, $eventtime
73		503
74	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
75	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
…		…
82		512
83	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
84	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
85	by calling C<< $term->selection >>.	515	by calling C<< $term->selection >>.
86		516
87	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.
88		518
89	=item on_focus_in $term	519	=item on_sel_extend $term
90		520
91	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
92	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.
93		527
94	=item on_focus_out $term	528	See the F<selection> example extension.
95
96	Called wheneever the window loses keyboard focus, before urxvt does focus
97	out processing.
98		529
99	=item on_view_change $term, $offset	530	=item on_view_change $term, $offset
100		531
101	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
102	scrolls. Offset C<0> means display the normal terminal, positive values	533	scrolls. Offset C<0> means display the normal terminal, positive values
103	show this many lines of scrollback.	534	show this many lines of scrollback.
104		535
105	=item on_scroll_back $term, $lines, $saved	536	=item on_scroll_back $term, $lines, $saved
106		537
…		…
110		541
111	It is called before lines are scrolled out (so rows 0 .. min ($lines - 1,	542	It is called before lines are scrolled out (so rows 0 .. min ($lines - 1,
112	$nrow - 1) represent the lines to be scrolled out). C<$saved> is the total	543	$nrow - 1) represent the lines to be scrolled out). C<$saved> is the total
113	number of lines that will be in the scrollback buffer.	544	number of lines that will be in the scrollback buffer.
114		545
115	=item on_tty_activity $term *NYI*	546	=item on_osc_seq $term, $op, $args
116		547
117	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, $string
		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 and a colon, to distinguish
		562	it from commands for other extensions, and this might be enforced in the
		563	future.
		564
		565	Be careful not ever to trust (in a security sense) the data you receive,
		566	as its source can not easily be controlled (e-mail content, messages from
		567	other users on the same system etc.).
		568
		569	=item on_add_lines $term, $string
		570
		571	Called whenever text is about to be output, with the text as argument. You
		572	can filter/change and output the text yourself by returning a true value
		573	and calling C<< $term->scr_add_lines >> yourself. Please note that this
		574	might be very slow, however, as your hook is called for B<all> text being
		575	output.
		576
		577	=item on_tt_write $term, $octets
		578
		579	Called whenever some data is written to the tty/pty and can be used to
		580	suppress or filter tty input.
		581
		582	=item on_line_update $term, $row
		583
		584	Called whenever a line was updated or changed. Can be used to filter
		585	screen output (e.g. underline urls or other useless stuff). Only lines
		586	that are being shown will be filtered, and, due to performance reasons,
		587	not always immediately.
		588
		589	The row number is always the topmost row of the line if the line spans
		590	multiple rows.
		591
		592	Please note that, if you change the line, then the hook might get called
		593	later with the already-modified line (e.g. if unrelated parts change), so
		594	you cannot just toggle rendition bits, but only set them.
118		595
119	=item on_refresh_begin $term	596	=item on_refresh_begin $term
120		597
121	Called just before the screen gets redrawn. Can be used for overlay	598	Called just before the screen gets redrawn. Can be used for overlay
122	or similar effects by modify terminal contents in refresh_begin, and	599	or similar effects by modify terminal contents in refresh_begin, and
…		…
125		602
126	=item on_refresh_end $term	603	=item on_refresh_end $term
127		604
128	Called just after the screen gets redrawn. See C<on_refresh_begin>.	605	Called just after the screen gets redrawn. See C<on_refresh_begin>.
129		606
		607	=item on_user_command $term, $string
		608
		609	Called whenever a user-configured event is being activated (e.g. via
		610	a C<perl:string> action bound to a key, see description of the B<keysym>
		611	resource in the @@RXVT_NAME@@(1) manpage).
		612
		613	The event is simply the action string. This interface is assumed to change
		614	slightly in the future.
		615
		616	=item on_resize_all_windows $tern, $new_width, $new_height
		617
		618	Called just after the new window size has been calculated, but before
		619	windows are actually being resized or hints are being set. If this hook
		620	returns TRUE, setting of the window hints is being skipped.
		621
		622	=item on_x_event $term, $event
		623
		624	Called on every X event received on the vt window (and possibly other
		625	windows). Should only be used as a last resort. Most event structure
		626	members are not passed.
		627
		628	=item on_root_event $term, $event
		629
		630	Like C<on_x_event>, but is called for events on the root window.
		631
		632	=item on_focus_in $term
		633
		634	Called whenever the window gets the keyboard focus, before rxvt-unicode
		635	does focus in processing.
		636
		637	=item on_focus_out $term
		638
		639	Called whenever the window loses keyboard focus, before rxvt-unicode does
		640	focus out processing.
		641
		642	=item on_configure_notify $term, $event
		643
		644	=item on_property_notify $term, $event
		645
		646	=item on_key_press $term, $event, $keysym, $octets
		647
		648	=item on_key_release $term, $event, $keysym
		649
		650	=item on_button_press $term, $event
		651
		652	=item on_button_release $term, $event
		653
		654	=item on_motion_notify $term, $event
		655
		656	=item on_map_notify $term, $event
		657
		658	=item on_unmap_notify $term, $event
		659
		660	Called whenever the corresponding X event is received for the terminal If
		661	the hook returns true, then the even will be ignored by rxvt-unicode.
		662
		663	The event is a hash with most values as named by Xlib (see the XEvent
		664	manpage), with the additional members C<row> and C<col>, which are the
		665	(real, not screen-based) row and column under the mouse cursor.
		666
		667	C<on_key_press> additionally receives the string rxvt-unicode would
		668	output, if any, in locale-specific encoding.
		669
		670	subwindow.
		671
		672	=item on_client_message $term, $event
		673
		674	=item on_wm_protocols $term, $event
		675
		676	=item on_wm_delete_window $term, $event
		677
		678	Called when various types of ClientMessage events are received (all with
		679	format=32, WM_PROTOCOLS or WM_PROTOCOLS:WM_DELETE_WINDOW).
		680
		681	=back
		682
		683	=cut
		684
		685	package urxvt;
		686
		687	use utf8;
		688	use strict;
		689	use Carp ();
		690	use Scalar::Util ();
		691	use List::Util ();
		692
		693	our $VERSION = 1;
		694	our $TERM;
		695	our @TERM_INIT;
		696	our @TERM_EXT;
		697	our @HOOKNAME;
		698	our %HOOKTYPE = map +($HOOKNAME[$_] => $_), 0..$#HOOKNAME;
		699	our %OPTION;
		700
		701	our $LIBDIR;
		702	our $RESNAME;
		703	our $RESCLASS;
		704	our $RXVTNAME;
		705
		706	our $NOCHAR = chr 0xffff;
		707
		708	=head2 Variables in the C<urxvt> Package
		709
		710	=over 4
		711
		712	=item $urxvt::LIBDIR
		713
		714	The rxvt-unicode library directory, where, among other things, the perl
		715	modules and scripts are stored.
		716
		717	=item $urxvt::RESCLASS, $urxvt::RESCLASS
		718
		719	The resource class and name rxvt-unicode uses to look up X resources.
		720
		721	=item $urxvt::RXVTNAME
		722
		723	The basename of the installed binaries, usually C<urxvt>.
		724
		725	=item $urxvt::TERM
		726
		727	The current terminal. This variable stores the current C<urxvt::term>
		728	object, whenever a callback/hook is executing.
		729
		730	=item @urxvt::TERM_INIT
		731
		732	All code references in this array will be called as methods of the next newly
		733	created C<urxvt::term> object (during the C<on_init> phase). The array
		734	gets cleared before the code references that were in it are being executed,
		735	so references can push themselves onto it again if they so desire.
		736
		737	This complements to the perl-eval command line option, but gets executed
		738	first.
		739
		740	=item @urxvt::TERM_EXT
		741
		742	Works similar to C<@TERM_INIT>, but contains perl package/class names, which
		743	get registered as normal extensions after calling the hooks in C<@TERM_INIT>
		744	but before other extensions. Gets cleared just like C<@TERM_INIT>.
		745
130	=back	746	=back
131		747
132	=head2 Functions in the C<urxvt> Package	748	=head2 Functions in the C<urxvt> Package
133		749
134	=over 4	750	=over 4
…		…
146	that calls this function.	762	that calls this function.
147		763
148	Using this function has the advantage that its output ends up in the	764	Using this function has the advantage that its output ends up in the
149	correct place, e.g. on stderr of the connecting urxvtc client.	765	correct place, e.g. on stderr of the connecting urxvtc client.
150		766
		767	Messages have a size limit of 1023 bytes currently.
		768
		769	=item @terms = urxvt::termlist
		770
		771	Returns all urxvt::term objects that exist in this process, regardless of
		772	whether they are started, being destroyed etc., so be careful. Only term
		773	objects that have perl extensions attached will be returned (because there
		774	is no urxvt::term objet associated with others).
		775
151	=item $time = urxvt::NOW	776	=item $time = urxvt::NOW
152		777
153	Returns the "current time" (as per the event loop).	778	Returns the "current time" (as per the event loop).
154		779
		780	=item urxvt::CurrentTime
		781
		782	=item urxvt::ShiftMask, LockMask, ControlMask, Mod1Mask, Mod2Mask,
		783	Mod3Mask, Mod4Mask, Mod5Mask, Button1Mask, Button2Mask, Button3Mask,
		784	Button4Mask, Button5Mask, AnyModifier
		785
		786	=item urxvt::NoEventMask, KeyPressMask, KeyReleaseMask,
		787	ButtonPressMask, ButtonReleaseMask, EnterWindowMask, LeaveWindowMask,
		788	PointerMotionMask, PointerMotionHintMask, Button1MotionMask, Button2MotionMask,
		789	Button3MotionMask, Button4MotionMask, Button5MotionMask, ButtonMotionMask,
		790	KeymapStateMask, ExposureMask, VisibilityChangeMask, StructureNotifyMask,
		791	ResizeRedirectMask, SubstructureNotifyMask, SubstructureRedirectMask,
		792	FocusChangeMask, PropertyChangeMask, ColormapChangeMask, OwnerGrabButtonMask
		793
		794	=item urxvt::KeyPress, KeyRelease, ButtonPress, ButtonRelease, MotionNotify,
		795	EnterNotify, LeaveNotify, FocusIn, FocusOut, KeymapNotify, Expose,
		796	GraphicsExpose, NoExpose, VisibilityNotify, CreateNotify, DestroyNotify,
		797	UnmapNotify, MapNotify, MapRequest, ReparentNotify, ConfigureNotify,
		798	ConfigureRequest, GravityNotify, ResizeRequest, CirculateNotify,
		799	CirculateRequest, PropertyNotify, SelectionClear, SelectionRequest,
		800	SelectionNotify, ColormapNotify, ClientMessage, MappingNotify
		801
		802	Various constants for use in X calls and event processing.
		803
		804	=back
		805
		806	=head2 RENDITION
		807
		808	Rendition bitsets contain information about colour, font, font styles and
		809	similar information for each screen cell.
		810
		811	The following "macros" deal with changes in rendition sets. You should
		812	never just create a bitset, you should always modify an existing one,
		813	as they contain important information required for correct operation of
		814	rxvt-unicode.
		815
		816	=over 4
		817
		818	=item $rend = urxvt::DEFAULT_RSTYLE
		819
		820	Returns the default rendition, as used when the terminal is starting up or
		821	being reset. Useful as a base to start when creating renditions.
		822
		823	=item $rend = urxvt::OVERLAY_RSTYLE
		824
		825	Return the rendition mask used for overlays by default.
		826
		827	=item $rendbit = urxvt::RS_Bold, RS_Italic, RS_Blink, RS_RVid, RS_Uline
		828
		829	Return the bit that enabled bold, italic, blink, reverse-video and
		830	underline, respectively. To enable such a style, just logically OR it into
		831	the bitset.
		832
		833	=item $foreground = urxvt::GET_BASEFG $rend
		834
		835	=item $background = urxvt::GET_BASEBG $rend
		836
		837	Return the foreground/background colour index, respectively.
		838
		839	=item $rend = urxvt::SET_FGCOLOR $rend, $new_colour
		840
		841	=item $rend = urxvt::SET_BGCOLOR $rend, $new_colour
		842
		843	=item $rend = urxvt::SET_COLOR $rend, $new_fg, $new_bg
		844
		845	Replace the foreground/background colour in the rendition mask with the
		846	specified one.
		847
		848	=item $value = urxvt::GET_CUSTOM $rend
		849
		850	Return the "custom" value: Every rendition has 5 bits for use by
		851	extensions. They can be set and changed as you like and are initially
		852	zero.
		853
		854	=item $rend = urxvt::SET_CUSTOM $rend, $new_value
		855
		856	Change the custom value.
		857
		858	=back
		859
155	=cut	860	=cut
156		861
157	package urxvt;
158
159	use strict;
160
161	our $term;
162	our @HOOKNAME;
163	our $LIBDIR;
164
165	BEGIN {	862	BEGIN {
166	urxvt->bootstrap;
167
168	# overwrite perl's warn	863	# overwrite perl's warn
169	*CORE::GLOBAL::warn = sub {	864	*CORE::GLOBAL::warn = sub {
170	my $msg = join "", @_;	865	my $msg = join "", @_;
171	$msg .= "\n"	866	$msg .= "\n"
172	unless $msg =~ /\n$/;	867	unless $msg =~ /\n$/;
173	urxvt::warn ($msg);	868	urxvt::warn ($msg);
174	};	869	};
175	}	870	}
176		871
		872	no warnings 'utf8';
		873
177	my $verbosity = $ENV{URXVT_PERL_VERBOSITY} || 10;	874	my $verbosity = $ENV{URXVT_PERL_VERBOSITY};
178		875
179	sub verbose {	876	sub verbose {
180	my ($level, $msg) = @_;	877	my ($level, $msg) = @_;
181	warn "$msg\n"; #d#	878	warn "$msg\n" if $level <= $verbosity;
182	}	879	}
183		880
184	my @invoke_cb;	881	my %extension_pkg;
		882
		883	# load a single script into its own package, once only
		884	sub extension_package($) {
		885	my ($path) = @_;
		886
		887	$extension_pkg{$path} ||= do {
		888	$path =~ /([^\/\\]+)$/;
		889	my $pkg = $1;
		890	$pkg =~ s/[^[:word:]]/_/g;
		891	$pkg = "urxvt::ext::$pkg";
		892
		893	verbose 3, "loading extension '$path' into package '$pkg'";
		894
		895	open my $fh, "<:raw", $path
		896	or die "$path: $!";
		897
		898	my $source =
		899	"package $pkg; use strict; use utf8; no warnings 'utf8';\n"
		900	. "#line 1 \"$path\"\n{\n"
		901	. (do { local $/; <$fh> })
		902	. "\n};\n1";
		903
		904	eval $source
		905	or die "$path: $@";
		906
		907	$pkg
		908	}
		909	}
		910
		911	our $retval; # return value for urxvt
185		912
186	# called by the rxvt core	913	# called by the rxvt core
187	sub invoke {	914	sub invoke {
188	local $term = shift;	915	local $TERM = shift;
189	my $htype = shift;	916	my $htype = shift;
190		917
191	my $cb = $invoke_cb[$htype];	918	if ($htype == 0) { # INIT
		919	my @dirs = ((split /:/, $TERM->resource ("perl_lib")), "$LIBDIR/perl");
192		920
193	verbose 10, "$HOOKNAME[$htype] (" . (join ", ", $term, @_) . ")"	921	my %ext_arg;
194	if $verbosity >= 10;
195		922
196	while (my ($k, $v) = each %$cb) {	923	{
197	return 1 if $v->($term, @_);	924	my @init = @TERM_INIT;
		925	@TERM_INIT = ();
		926	$_->($TERM) for @init;
		927	my @pkg = @TERM_EXT;
		928	@TERM_EXT = ();
		929	$TERM->register_package ($_) for @pkg;
		930	}
		931
		932	for (grep $_, map { split /,/, $TERM->resource ("perl_ext_$_") } 1, 2) {
		933	if ($_ eq "default") {
		934	$ext_arg{$_} ||= [] for qw(selection option-popup selection-popup searchable-scrollback readline);
		935	} elsif (/^-(.*)$/) {
		936	delete $ext_arg{$1};
		937	} elsif (/^([^<]+)<(.*)>$/) {
		938	push @{ $ext_arg{$1} }, $2;
		939	} else {
		940	$ext_arg{$_} ||= [];
		941	}
		942	}
		943
		944	for my $ext (sort keys %ext_arg) {
		945	my @files = grep -f $_, map "$_/$ext", @dirs;
		946
		947	if (@files) {
		948	$TERM->register_package (extension_package $files[0], $ext_arg{$ext});
		949	} else {
		950	warn "perl extension '$ext' not found in perl library search path\n";
		951	}
		952	}
		953
		954	eval "#line 1 \"--perl-eval resource/argument\"\n" . $TERM->resource ("perl_eval");
		955	warn $@ if $@;
198	}	956	}
199		957
		958	$retval = undef;
		959
		960	if (my $cb = $TERM->{_hook}[$htype]) {
		961	verbose 10, "$HOOKNAME[$htype] (" . (join ", ", $TERM, @_) . ")"
		962	if $verbosity >= 10;
		963
		964	for my $pkg (keys %$cb) {
		965	my $retval_ = eval { $cb->{$pkg}->($TERM->{_pkg}{$pkg}, @_) };
		966	$retval ||= $retval_;
		967
		968	if ($@) {
		969	$TERM->ungrab; # better to lose the grab than the session
		970	warn $@;
		971	}
		972	}
		973
		974	verbose 11, "$HOOKNAME[$htype] returning <$retval>"
		975	if $verbosity >= 11;
200	0	976	}
		977
		978	if ($htype == 1) { # DESTROY
		979	# clear package objects
		980	%$_ = () for values %{ $TERM->{_pkg} };
		981
		982	# clear package
		983	%$TERM = ();
		984	}
		985
		986	$retval
201	}	987	}
		988
		989	sub SET_COLOR($$$) {
		990	SET_BGCOLOR (SET_FGCOLOR ($_[0], $_[1]), $_[2])
		991	}
		992
		993	sub rend2mask {
		994	no strict 'refs';
		995	my ($str, $mask) = (@_, 0);
		996	my %color = ( fg => undef, bg => undef );
		997	my @failed;
		998	for my $spec ( split /\s+/, $str ) {
		999	if ( $spec =~ /^([fb]g)[_:-]?(\d+)/i ) {
		1000	$color{lc($1)} = $2;
		1001	} else {
		1002	my $neg = $spec =~ s/^[-^]//;
		1003	unless ( exists &{"RS_$spec"} ) {
		1004	push @failed, $spec;
		1005	next;
		1006	}
		1007	my $cur = &{"RS_$spec"};
		1008	if ( $neg ) {
		1009	$mask &= ~$cur;
		1010	} else {
		1011	$mask |= $cur;
		1012	}
		1013	}
		1014	}
		1015	($mask, @color{qw(fg bg)}, \@failed)
		1016	}
		1017
		1018	# urxvt::term::extension
		1019
		1020	package urxvt::term::extension;
		1021
		1022	sub enable {
		1023	my ($self, %hook) = @_;
		1024	my $pkg = $self->{_pkg};
		1025
		1026	while (my ($name, $cb) = each %hook) {
		1027	my $htype = $HOOKTYPE{uc $name};
		1028	defined $htype
		1029	or Carp::croak "unsupported hook type '$name'";
		1030
		1031	$self->set_should_invoke ($htype, +1)
		1032	unless exists $self->{term}{_hook}[$htype]{$pkg};
		1033
		1034	$self->{term}{_hook}[$htype]{$pkg} = $cb;
		1035	}
		1036	}
		1037
		1038	sub disable {
		1039	my ($self, @hook) = @_;
		1040	my $pkg = $self->{_pkg};
		1041
		1042	for my $name (@hook) {
		1043	my $htype = $HOOKTYPE{uc $name};
		1044	defined $htype
		1045	or Carp::croak "unsupported hook type '$name'";
		1046
		1047	$self->set_should_invoke ($htype, -1)
		1048	if delete $self->{term}{_hook}[$htype]{$pkg};
		1049	}
		1050	}
		1051
		1052	our $AUTOLOAD;
		1053
		1054	sub AUTOLOAD {
		1055	$AUTOLOAD =~ /:([^:]+)$/
		1056	or die "FATAL: \$AUTOLOAD '$AUTOLOAD' unparsable";
		1057
		1058	eval qq{
		1059	sub $AUTOLOAD {
		1060	my \$proxy = shift;
		1061	\$proxy->{term}->$1 (\@_)
		1062	}
		1063	1
		1064	} or die "FATAL: unable to compile method forwarder: $@";
		1065
		1066	goto &$AUTOLOAD;
		1067	}
		1068
		1069	sub DESTROY {
		1070	# nop
		1071	}
		1072
		1073	# urxvt::destroy_hook
		1074
		1075	sub urxvt::destroy_hook::DESTROY {
		1076	${$_[0]}->();
		1077	}
		1078
		1079	sub urxvt::destroy_hook(&) {
		1080	bless \shift, urxvt::destroy_hook::
		1081	}
		1082
		1083	package urxvt::anyevent;
		1084
		1085	=head2 The C<urxvt::anyevent> Class
		1086
		1087	The sole purpose of this class is to deliver an interface to the
		1088	C<AnyEvent> module - any module using it will work inside urxvt without
		1089	further programming. The only exception is that you cannot wait on
		1090	condition variables, but non-blocking condvar use is ok. What this means
		1091	is that you cannot use blocking APIs, but the non-blocking variant should
		1092	work.
		1093
		1094	=cut
		1095
		1096	our $VERSION = 1;
		1097
		1098	$INC{"urxvt/anyevent.pm"} = 1; # mark us as there
		1099	push @AnyEvent::REGISTRY, [urxvt => urxvt::anyevent::];
		1100
		1101	sub timer {
		1102	my ($class, %arg) = @_;
		1103
		1104	my $cb = $arg{cb};
		1105
		1106	urxvt::timer
		1107	->new
		1108	->start (urxvt::NOW + $arg{after})
		1109	->cb (sub {
		1110	$_[0]->stop; # need to cancel manually
		1111	$cb->();
		1112	})
		1113	}
		1114
		1115	sub io {
		1116	my ($class, %arg) = @_;
		1117
		1118	my $cb = $arg{cb};
		1119
		1120	bless [$arg{fh}, urxvt::iow
		1121	->new
		1122	->fd (fileno $arg{fh})
		1123	->events (($arg{poll} =~ /r/ ? 1 : 0)
		1124	| ($arg{poll} =~ /w/ ? 2 : 0))
		1125	->start
		1126	->cb (sub {
		1127	$cb->(($_[1] & 1 ? 'r' : '')
		1128	. ($_[1] & 2 ? 'w' : ''));
		1129	})],
		1130	urxvt::anyevent::
		1131	}
		1132
		1133	sub DESTROY {
		1134	$_[0][1]->stop;
		1135	}
		1136
		1137	sub condvar {
		1138	bless \my $flag, urxvt::anyevent::
		1139	}
		1140
		1141	sub broadcast {
		1142	${$_[0]}++;
		1143	}
		1144
		1145	sub wait {
		1146	unless (${$_[0]}) {
		1147	Carp::croak "AnyEvent->condvar blocking wait unsupported in urxvt, use a non-blocking API";
		1148	}
		1149	}
		1150
		1151	sub one_event {
		1152	Carp::croak "AnyEvent->one_event blocking wait unsupported in urxvt, use a non-blocking API";
		1153	}
		1154
		1155	package urxvt::term;
		1156
		1157	=head2 The C<urxvt::term> Class
		1158
		1159	=over 4
		1160
		1161	=cut
202		1162
203	# find on_xxx subs in the package and register them	1163	# find on_xxx subs in the package and register them
204	# as hooks	1164	# as hooks
205	sub register_package($) {	1165	sub register_package {
206	my ($pkg) = @_;	1166	my ($self, $pkg, $argv) = @_;
207		1167
		1168	no strict 'refs';
		1169
		1170	urxvt::verbose 6, "register package $pkg to $self";
		1171
		1172	@{"$pkg\::ISA"} = urxvt::term::extension::;
		1173
		1174	my $proxy = bless {
		1175	_pkg => $pkg,
		1176	argv => $argv,
		1177	}, $pkg;
		1178	Scalar::Util::weaken ($proxy->{term} = $self);
		1179
		1180	$self->{_pkg}{$pkg} = $proxy;
		1181
208	for my $hook (0.. $#HOOKNAME) {	1182	for my $name (@HOOKNAME) {
209	my $name = $HOOKNAME[$hook];
210
211	my $ref = $pkg->can ("on_" . lc $name)	1183	if (my $ref = $pkg->can ("on_" . lc $name)) {
212	or next;	1184	$proxy->enable ($name => $ref);
213		1185	}
214	$invoke_cb[$hook]{$ref*1} = $ref;
215	set_should_invoke $hook, 1;
216	}	1186	}
217	}	1187	}
218		1188
219	my $script_pkg = "script0000";	1189	=item $term = new urxvt::term $envhashref, $rxvtname, [arg...]
220	my %script_pkg;
221		1190
222	# load a single script into its own package, once only	1191	Creates a new terminal, very similar as if you had started it with system
223	sub load_script($) {	1192	C<$rxvtname, arg...>. C<$envhashref> must be a reference to a C<%ENV>-like
224	my ($path) = @_;	1193	hash which defines the environment of the new terminal.
225		1194
226	$script_pkg{$path} ||= do {	1195	Croaks (and probably outputs an error message) if the new instance
227	my $pkg = $script_pkg++;	1196	couldn't be created. Returns C<undef> if the new instance didn't
228	verbose 3, "loading script '$path' into package '$pkg'";	1197	initialise perl, and the terminal object otherwise. The C<init> and
		1198	C<start> hooks will be called before this call returns, and are free to
		1199	refer to global data (which is race free).
229		1200
230	open my $fh, "<:raw", $path	1201	=cut
231	or die "$path: $!";
232		1202
233	eval "package $pkg; use strict; use utf8;\n"	1203	sub new {
234	. "#line 1 \"$path\"\n"	1204	my ($class, $env, @args) = @_;
235	. do { local $/; <$fh> }
236	or die "$path: $@";
237		1205
238	register_package $pkg;	1206	$env or Carp::croak "environment hash missing in call to urxvt::term->new";
		1207	@args or Carp::croak "name argument missing in call to urxvt::term->new";
239		1208
240	$pkg	1209	_new ([ map "$_=$env->{$_}", keys %$env ], \@args);
241	};
242	}	1210	}
243		1211
244	sub load_scripts($) {	1212	=item $term->destroy
245	my ($dir) = @_;
246		1213
247	verbose 3, "loading scripts from '$dir'";	1214	Destroy the terminal object (close the window, free resources
		1215	etc.). Please note that @@RXVT_NAME@@ will not exit as long as any event
		1216	watchers (timers, io watchers) are still active.
248		1217
249	load_script $_	1218	=item $term->exec_async ($cmd[, @args])
250	for grep -f $_,
251	<$dir/perl-ext/*>;
252	}
253		1219
254	sub on_init {	1220	Works like the combination of the C<fork>/C<exec> builtins, which executes
255	my ($term) = @_;	1221	("starts") programs in the background. This function takes care of setting
		1222	the user environment before exec'ing the command (e.g. C<PATH>) and should
		1223	be preferred over explicit calls to C<exec> or C<system>.
256		1224
257	my $libdir = $term->resource ("perl_lib");	1225	Returns the pid of the subprocess or C<undef> on error.
258		1226
259	load_scripts $libdir	1227	=cut
		1228
		1229	sub exec_async {
		1230	my $self = shift;
		1231
		1232	my $pid = fork;
		1233
		1234	return $pid
260	if defined $libdir;	1235	if !defined $pid or $pid;
261	}
262		1236
263	register_package __PACKAGE__;	1237	%ENV = %{ $self->env };
264	load_scripts $LIBDIR;
265		1238
266	=back	1239	exec @_;
		1240	urxvt::_exit 255;
		1241	}
267		1242
268	=head2 The C<urxvt::term> Class	1243	=item $isset = $term->option ($optval[, $set])
269		1244
270	=over 4	1245	Returns true if the option specified by C<$optval> is enabled, and
		1246	optionally change it. All option values are stored by name in the hash
		1247	C<%urxvt::OPTION>. Options not enabled in this binary are not in the hash.
		1248
		1249	Here is a likely non-exhaustive list of option names, please see the
		1250	source file F</src/optinc.h> to see the actual list:
		1251
		1252	borderLess console cursorBlink cursorUnderline hold iconic insecure
		1253	intensityStyles jumpScroll loginShell mapAlert meta8 mouseWheelScrollPage
		1254	override-redirect pastableTabs pointerBlank reverseVideo scrollBar
		1255	scrollBar_floating scrollBar_right scrollTtyKeypress scrollTtyOutput
		1256	scrollWithBuffer secondaryScreen secondaryScroll skipBuiltinGlyphs
		1257	transparent tripleclickwords utmpInhibit visualBell
271		1258
272	=item $value = $term->resource ($name[, $newval])	1259	=item $value = $term->resource ($name[, $newval])
273		1260
274	Returns the current resource value associated with a given name and	1261	Returns the current resource value associated with a given name and
275	optionally sets a new value. Setting values is most useful in the C<init>	1262	optionally sets a new value. Setting values is most useful in the C<init>
…		…
284	likely change).	1271	likely change).
285		1272
286	Please note that resource strings will currently only be freed when the	1273	Please note that resource strings will currently only be freed when the
287	terminal is destroyed, so changing options frequently will eat memory.	1274	terminal is destroyed, so changing options frequently will eat memory.
288		1275
289	Here is a a likely non-exhaustive list of resource names, not all of which	1276	Here is a likely non-exhaustive list of resource names, not all of which
290	are supported in every build, please see the source to see the actual	1277	are supported in every build, please see the source file F</src/rsinc.h>
291	list:	1278	to see the actual list:
292		1279
293	answerbackstring backgroundPixmap backspace_key boldFont boldItalicFont	1280	answerbackstring backgroundPixmap backspace_key boldFont boldItalicFont
294	borderLess color cursorBlink cursorUnderline cutchars delete_key	1281	borderLess color cursorBlink cursorUnderline cutchars delete_key
295	display_name embed ext_bwidth fade font geometry hold iconName	1282	display_name embed ext_bwidth fade font geometry hold iconName
296	imFont imLocale inputMethod insecure int_bwidth intensityStyles	1283	imFont imLocale inputMethod insecure int_bwidth intensityStyles
297	italicFont jumpScroll lineSpace loginShell mapAlert menu meta8	1284	italicFont jumpScroll lineSpace loginShell mapAlert meta8 modifier
298	modifier mouseWheelScrollPage name pastableTabs path perl perl_eval	1285	mouseWheelScrollPage name override_redirect pastableTabs path perl_eval
299	perl_lib pointerBlank pointerBlankDelay preeditType print_pipe pty_fd	1286	perl_ext_1 perl_ext_2 perl_lib pointerBlank pointerBlankDelay
300	reverseVideo saveLines scrollBar scrollBar_align scrollBar_floating	1287	preeditType print_pipe pty_fd reverseVideo saveLines scrollBar
301	scrollBar_right scrollBar_thickness scrollTtyKeypress scrollTtyOutput	1288	scrollBar_align scrollBar_floating scrollBar_right scrollBar_thickness
302	scrollWithBuffer scrollstyle secondaryScreen secondaryScroll selectstyle	1289	scrollTtyKeypress scrollTtyOutput scrollWithBuffer scrollstyle
303	shade term_name title transparent transparent_all tripleclickwords	1290	secondaryScreen secondaryScroll shade term_name title
304	utmpInhibit visualBell	1291	transient_for transparent transparent_all tripleclickwords utmpInhibit
		1292	visualBell
305		1293
306	=cut	1294	=cut
307		1295
308	sub urxvt::term::resource($$;$) {	1296	sub resource($$;$) {
309	my ($self, $name) = (shift, shift);	1297	my ($self, $name) = (shift, shift);
310	unshift @_, $self, $name, ($name =~ s/\s*\+\s*(\d+)$// ? $1 : 0);	1298	unshift @_, $self, $name, ($name =~ s/\s*\+\s*(\d+)$// ? $1 : 0);
311	goto &urxvt::term::_resource;	1299	&urxvt::term::_resource
312	}	1300	}
		1301
		1302	=item $value = $term->x_resource ($pattern)
		1303
		1304	Returns the X-Resource for the given pattern, excluding the program or
		1305	class name, i.e. C<< $term->x_resource ("boldFont") >> should return the
		1306	same value as used by this instance of rxvt-unicode. Returns C<undef> if no
		1307	resource with that pattern exists.
		1308
		1309	This method should only be called during the C<on_start> hook, as there is
		1310	only one resource database per display, and later invocations might return
		1311	the wrong resources.
		1312
		1313	=item $success = $term->parse_keysym ($keysym_spec, $command_string)
		1314
		1315	Adds a keymap translation exactly as specified via a resource. See the
		1316	C<keysym> resource in the @@RXVT_NAME@@(1) manpage.
		1317
		1318	=item $rend = $term->rstyle ([$new_rstyle])
		1319
		1320	Return and optionally change the current rendition. Text that is output by
		1321	the terminal application will use this style.
		1322
		1323	=item ($row, $col) = $term->screen_cur ([$row, $col])
		1324
		1325	Return the current coordinates of the text cursor position and optionally
		1326	set it (which is usually bad as applications don't expect that).
313		1327
314	=item ($row, $col) = $term->selection_mark ([$row, $col])	1328	=item ($row, $col) = $term->selection_mark ([$row, $col])
315		1329
316	=item ($row, $col) = $term->selection_beg ([$row, $col])	1330	=item ($row, $col) = $term->selection_beg ([$row, $col])
317		1331
318	=item ($row, $col) = $term->selection_end ([$row, $col])	1332	=item ($row, $col) = $term->selection_end ([$row, $col])
319		1333
320	Return the current values of the selection mark, begin or end positions,	1334	Return the current values of the selection mark, begin or end positions,
321	and optionally set them to new values.	1335	and optionally set them to new values.
322		1336
		1337	=item $term->selection_make ($eventtime[, $rectangular])
		1338
		1339	Tries to make a selection as set by C<selection_beg> and
		1340	C<selection_end>. If C<$rectangular> is true (default: false), a
		1341	rectangular selection will be made. This is the prefered function to make
		1342	a selection.
		1343
323	=item $success = $term->selection_grab ($eventtime)	1344	=item $success = $term->selection_grab ($eventtime)
324		1345
325	Try to request the primary selection from the server (for example, as set	1346	Try to request the primary selection text from the server (for example, as
326	by the next method).	1347	set by the next method). No visual feedback will be given. This function
		1348	is mostly useful from within C<on_sel_grab> hooks.
327		1349
328	=item $oldtext = $term->selection ([$newtext])	1350	=item $oldtext = $term->selection ([$newtext])
329		1351
330	Return the current selection text and optionally replace it by C<$newtext>.	1352	Return the current selection text and optionally replace it by C<$newtext>.
331		1353
332	=item $term->scr_overlay ($x, $y, $text)	1354	=item $term->overlay_simple ($x, $y, $text)
333		1355
334	Create a simple multi-line overlay box. See the next method for details.	1356	Create a simple multi-line overlay box. See the next method for details.
335		1357
336	=cut	1358	=cut
337		1359
338	sub urxvt::term::scr_overlay {	1360	sub overlay_simple {
339	my ($self, $x, $y, $text) = @_;	1361	my ($self, $x, $y, $text) = @_;
340		1362
341	my @lines = split /\n/, $text;	1363	my @lines = split /\n/, $text;
342		1364
343	my $w = 0;	1365	my $w = List::Util::max map $self->strwidth ($_), @lines;
344	for (map $self->strwidth ($_), @lines) {
345	$w = $_ if $w < $_;
346	}
347		1366
348	$self->scr_overlay_new ($x, $y, $w, scalar @lines);	1367	my $overlay = $self->overlay ($x, $y, $w, scalar @lines);
349	$self->scr_overlay_set (0, $_, $lines[$_]) for 0.. $#lines;	1368	$overlay->set (0, $_, $lines[$_]) for 0.. $#lines;
350	}
351		1369
		1370	$overlay
		1371	}
		1372
352	=item $term->scr_overlay_new ($x, $y, $width, $height)	1373	=item $term->overlay ($x, $y, $width, $height[, $rstyle[, $border]])
353		1374
354	Create a new (empty) overlay at the given position with the given	1375	Create a new (empty) overlay at the given position with the given
355	width/height. A border will be put around the box. If either C<$x> or	1376	width/height. C<$rstyle> defines the initial rendition style
356	C<$y> is negative, then this is counted from the right/bottom side,	1377	(default: C<OVERLAY_RSTYLE>).
357	respectively.
358		1378
359	=item $term->scr_overlay_off	1379	If C<$border> is C<2> (default), then a decorative border will be put
		1380	around the box.
360		1381
361	Switch the overlay off again.	1382	If either C<$x> or C<$y> is negative, then this is counted from the
		1383	right/bottom side, respectively.
362		1384
363	=item $term->scr_overlay_set_char ($x, $y, $char, $rend = OVERLAY_RSTYLE)	1385	This method returns an urxvt::overlay object. The overlay will be visible
		1386	as long as the perl object is referenced.
364		1387
365	Put a single character (specified numerically) at the given overlay	1388	The methods currently supported on C<urxvt::overlay> objects are:
366	position.
367		1389
		1390	=over 4
		1391
368	=item $term->scr_overlay_set ($x, $y, $text)	1392	=item $overlay->set ($x, $y, $text, $rend)
369		1393
370	Write a string at the given position into the overlay.	1394	Similar to C<< $term->ROW_t >> and C<< $term->ROW_r >> in that it puts
		1395	text in rxvt-unicode's special encoding and an array of rendition values
		1396	at a specific position inside the overlay.
371		1397
		1398	=item $overlay->hide
		1399
		1400	If visible, hide the overlay, but do not destroy it.
		1401
		1402	=item $overlay->show
		1403
		1404	If hidden, display the overlay again.
		1405
		1406	=back
		1407
		1408	=item $popup = $term->popup ($event)
		1409
		1410	Creates a new C<urxvt::popup> object that implements a popup menu. The
		1411	C<$event> I<must> be the event causing the menu to pop up (a button event,
		1412	currently).
		1413
		1414	=cut
		1415
		1416	sub popup {
		1417	my ($self, $event) = @_;
		1418
		1419	$self->grab ($event->{time}, 1)
		1420	or return;
		1421
		1422	my $popup = bless {
		1423	term => $self,
		1424	event => $event,
		1425	}, urxvt::popup::;
		1426
		1427	Scalar::Util::weaken $popup->{term};
		1428
		1429	$self->{_destroy}{$popup} = urxvt::destroy_hook { $popup->{popup}->destroy };
		1430	Scalar::Util::weaken $self->{_destroy}{$popup};
		1431
		1432	$popup
		1433	}
		1434
372	=item $cellwidth = $term->strwidth $string	1435	=item $cellwidth = $term->strwidth ($string)
373		1436
374	Returns the number of screen-cells this string would need. Correctly	1437	Returns the number of screen-cells this string would need. Correctly
375	accounts for wide and combining characters.	1438	accounts for wide and combining characters.
376		1439
377	=item $octets = $term->locale_encode $string	1440	=item $octets = $term->locale_encode ($string)
378		1441
379	Convert the given text string into the corresponding locale encoding.	1442	Convert the given text string into the corresponding locale encoding.
380		1443
381	=item $string = $term->locale_decode $octets	1444	=item $string = $term->locale_decode ($octets)
382		1445
383	Convert the given locale-encoded octets into a perl string.	1446	Convert the given locale-encoded octets into a perl string.
384		1447
		1448	=item $term->scr_xor_span ($beg_row, $beg_col, $end_row, $end_col[, $rstyle])
		1449
		1450	XORs the rendition values in the given span with the provided value
		1451	(default: C<RS_RVid>), which I<MUST NOT> contain font styles. Useful in
		1452	refresh hooks to provide effects similar to the selection.
		1453
		1454	=item $term->scr_xor_rect ($beg_row, $beg_col, $end_row, $end_col[, $rstyle1[, $rstyle2]])
		1455
		1456	Similar to C<scr_xor_span>, but xors a rectangle instead. Trailing
		1457	whitespace will additionally be xored with the C<$rstyle2>, which defaults
		1458	to C<RS_RVid | RS_Uline>, which removes reverse video again and underlines
		1459	it instead. Both styles I<MUST NOT> contain font styles.
		1460
		1461	=item $term->scr_bell
		1462
		1463	Ring the bell!
		1464
		1465	=item $term->scr_add_lines ($string)
		1466
		1467	Write the given text string to the screen, as if output by the application
		1468	running inside the terminal. It may not contain command sequences (escape
		1469	codes), but is free to use line feeds, carriage returns and tabs. The
		1470	string is a normal text string, not in locale-dependent encoding.
		1471
		1472	Normally its not a good idea to use this function, as programs might be
		1473	confused by changes in cursor position or scrolling. Its useful inside a
		1474	C<on_add_lines> hook, though.
		1475
		1476	=item $term->scr_change_screen ($screen)
		1477
		1478	Switch to given screen - 0 primary, 1 secondary.
		1479
		1480	=item $term->cmd_parse ($octets)
		1481
		1482	Similar to C<scr_add_lines>, but the argument must be in the
		1483	locale-specific encoding of the terminal and can contain command sequences
		1484	(escape codes) that will be interpreted.
		1485
385	=item $term->tt_write ($octets)	1486	=item $term->tt_write ($octets)
386		1487
387	Write the octets given in C<$data> to the tty (i.e. as program input). To	1488	Write the octets given in C<$data> to the tty (i.e. as program input). To
388	pass characters instead of octets, you should convetr you strings first to	1489	pass characters instead of octets, you should convert your strings first
389	the locale-specific encoding using C<< $term->locale_encode >>.	1490	to the locale-specific encoding using C<< $term->locale_encode >>.
		1491
		1492	=item $old_events = $term->pty_ev_events ([$new_events])
		1493
		1494	Replaces the event mask of the pty watcher by the given event mask. Can
		1495	be used to suppress input and output handling to the pty/tty. See the
		1496	description of C<< urxvt::timer->events >>. Make sure to always restore
		1497	the previous value.
		1498
		1499	=item $fd = $term->pty_fd
		1500
		1501	Returns the master file descriptor for the pty in use, or C<-1> if no pty
		1502	is used.
		1503
		1504	=item $windowid = $term->parent
		1505
		1506	Return the window id of the toplevel window.
		1507
		1508	=item $windowid = $term->vt
		1509
		1510	Return the window id of the terminal window.
		1511
		1512	=item $term->vt_emask_add ($x_event_mask)
		1513
		1514	Adds the specified events to the vt event mask. Useful e.g. when you want
		1515	to receive pointer events all the times:
		1516
		1517	$term->vt_emask_add (urxvt::PointerMotionMask);
		1518
		1519	=item $term->focus_in
		1520
		1521	=item $term->focus_out
		1522
		1523	=item $term->key_press ($state, $keycode[, $time])
		1524
		1525	=item $term->key_release ($state, $keycode[, $time])
		1526
		1527	Deliver various fake events to to terminal.
		1528
		1529	=item $window_width = $term->width
		1530
		1531	=item $window_height = $term->height
		1532
		1533	=item $font_width = $term->fwidth
		1534
		1535	=item $font_height = $term->fheight
		1536
		1537	=item $font_ascent = $term->fbase
		1538
		1539	=item $terminal_rows = $term->nrow
		1540
		1541	=item $terminal_columns = $term->ncol
		1542
		1543	=item $has_focus = $term->focus
		1544
		1545	=item $is_mapped = $term->mapped
		1546
		1547	=item $max_scrollback = $term->saveLines
		1548
		1549	=item $nrow_plus_saveLines = $term->total_rows
		1550
		1551	=item $topmost_scrollback_row = $term->top_row
		1552
		1553	Return various integers describing terminal characteristics.
		1554
		1555	=item $x_display = $term->display_id
		1556
		1557	Return the DISPLAY used by rxvt-unicode.
		1558
		1559	=item $lc_ctype = $term->locale
		1560
		1561	Returns the LC_CTYPE category string used by this rxvt-unicode.
		1562
		1563	=item $env = $term->env
		1564
		1565	Returns a copy of the environment in effect for the terminal as a hashref
		1566	similar to C<\%ENV>.
		1567
		1568	=item @envv = $term->envv
		1569
		1570	Returns the environment as array of strings of the form C<VAR=VALUE>.
		1571
		1572	=item @argv = $term->argv
		1573
		1574	Return the argument vector as this terminal, similar to @ARGV, but
		1575	includes the program name as first element.
		1576
		1577	=cut
		1578
		1579	sub env {
		1580	+{ map /^([^=]+)(?:=(.*))?$/s && ($1 => $2), $_[0]->envv }
		1581	}
		1582
		1583	=item $modifiermask = $term->ModLevel3Mask
		1584
		1585	=item $modifiermask = $term->ModMetaMask
		1586
		1587	=item $modifiermask = $term->ModNumLockMask
		1588
		1589	Return the modifier masks corresponding to the "ISO Level 3 Shift" (often
		1590	AltGr), the meta key (often Alt) and the num lock key, if applicable.
		1591
		1592	=item $screen = $term->current_screen
		1593
		1594	Returns the currently displayed screen (0 primary, 1 secondary).
		1595
		1596	=item $cursor_is_hidden = $term->hidden_cursor
		1597
		1598	Returns whether the cursor is currently hidden or not.
		1599
		1600	=item $view_start = $term->view_start ([$newvalue])
		1601
		1602	Returns the row number of the topmost displayed line. Maximum value is
		1603	C<0>, which displays the normal terminal contents. Lower values scroll
		1604	this many lines into the scrollback buffer.
		1605
		1606	=item $term->want_refresh
		1607
		1608	Requests a screen refresh. At the next opportunity, rxvt-unicode will
		1609	compare the on-screen display with its stored representation. If they
		1610	differ, it redraws the differences.
		1611
		1612	Used after changing terminal contents to display them.
		1613
		1614	=item $text = $term->ROW_t ($row_number[, $new_text[, $start_col]])
		1615
		1616	Returns the text of the entire row with number C<$row_number>. Row C<0>
		1617	is the topmost terminal line, row C<< $term->$ncol-1 >> is the bottommost
		1618	terminal line. The scrollback buffer starts at line C<-1> and extends to
		1619	line C<< -$term->nsaved >>. Nothing will be returned if a nonexistent line
		1620	is requested.
		1621
		1622	If C<$new_text> is specified, it will replace characters in the current
		1623	line, starting at column C<$start_col> (default C<0>), which is useful
		1624	to replace only parts of a line. The font index in the rendition will
		1625	automatically be updated.
		1626
		1627	C<$text> is in a special encoding: tabs and wide characters that use more
		1628	than one cell when displayed are padded with C<$urxvt::NOCHAR> (chr 65535)
		1629	characters. Characters with combining characters and other characters that
		1630	do not fit into the normal text encoding will be replaced with characters
		1631	in the private use area.
		1632
		1633	You have to obey this encoding when changing text. The advantage is
		1634	that C<substr> and similar functions work on screen cells and not on
		1635	characters.
		1636
		1637	The methods C<< $term->special_encode >> and C<< $term->special_decode >>
		1638	can be used to convert normal strings into this encoding and vice versa.
		1639
		1640	=item $rend = $term->ROW_r ($row_number[, $new_rend[, $start_col]])
		1641
		1642	Like C<< $term->ROW_t >>, but returns an arrayref with rendition
		1643	bitsets. Rendition bitsets contain information about colour, font, font
		1644	styles and similar information. See also C<< $term->ROW_t >>.
		1645
		1646	When setting rendition, the font mask will be ignored.
		1647
		1648	See the section on RENDITION, above.
		1649
		1650	=item $length = $term->ROW_l ($row_number[, $new_length])
		1651
		1652	Returns the number of screen cells that are in use ("the line
		1653	length"). Unlike the urxvt core, this returns C<< $term->ncol >> if the
		1654	line is joined with the following one.
		1655
		1656	=item $bool = $term->is_longer ($row_number)
		1657
		1658	Returns true if the row is part of a multiple-row logical "line" (i.e.
		1659	joined with the following row), which means all characters are in use
		1660	and it is continued on the next row (and possibly a continuation of the
		1661	previous row(s)).
		1662
		1663	=item $line = $term->line ($row_number)
		1664
		1665	Create and return a new C<urxvt::line> object that stores information
		1666	about the logical line that row C<$row_number> is part of. It supports the
		1667	following methods:
		1668
		1669	=over 4
		1670
		1671	=item $text = $line->t ([$new_text])
		1672
		1673	Returns or replaces the full text of the line, similar to C<ROW_t>
		1674
		1675	=item $rend = $line->r ([$new_rend])
		1676
		1677	Returns or replaces the full rendition array of the line, similar to C<ROW_r>
		1678
		1679	=item $length = $line->l
		1680
		1681	Returns the length of the line in cells, similar to C<ROW_l>.
		1682
		1683	=item $rownum = $line->beg
		1684
		1685	=item $rownum = $line->end
		1686
		1687	Return the row number of the first/last row of the line, respectively.
		1688
		1689	=item $offset = $line->offset_of ($row, $col)
		1690
		1691	Returns the character offset of the given row|col pair within the logical
		1692	line. Works for rows outside the line, too, and returns corresponding
		1693	offsets outside the string.
		1694
		1695	=item ($row, $col) = $line->coord_of ($offset)
		1696
		1697	Translates a string offset into terminal coordinates again.
390		1698
391	=back	1699	=back
		1700
		1701	=cut
		1702
		1703	sub line {
		1704	my ($self, $row) = @_;
		1705
		1706	my $maxrow = $self->nrow - 1;
		1707
		1708	my ($beg, $end) = ($row, $row);
		1709
		1710	--$beg while $self->ROW_is_longer ($beg - 1);
		1711	++$end while $self->ROW_is_longer ($end) && $end < $maxrow;
		1712
		1713	bless {
		1714	term => $self,
		1715	beg => $beg,
		1716	end => $end,
		1717	ncol => $self->ncol,
		1718	len => ($end - $beg) * $self->ncol + $self->ROW_l ($end),
		1719	}, urxvt::line::
		1720	}
		1721
		1722	sub urxvt::line::t {
		1723	my ($self) = @_;
		1724
		1725	if (@_ > 1)
		1726	{
		1727	$self->{term}->ROW_t ($_, $_[1], 0, ($_ - $self->{beg}) * $self->{ncol}, $self->{ncol})
		1728	for $self->{beg} .. $self->{end};
		1729	}
		1730
		1731	defined wantarray &&
		1732	substr +(join "", map $self->{term}->ROW_t ($_), $self->{beg} .. $self->{end}),
		1733	0, $self->{len}
		1734	}
		1735
		1736	sub urxvt::line::r {
		1737	my ($self) = @_;
		1738
		1739	if (@_ > 1)
		1740	{
		1741	$self->{term}->ROW_r ($_, $_[1], 0, ($_ - $self->{beg}) * $self->{ncol}, $self->{ncol})
		1742	for $self->{beg} .. $self->{end};
		1743	}
		1744
		1745	if (defined wantarray) {
		1746	my $rend = [
		1747	map @{ $self->{term}->ROW_r ($_) }, $self->{beg} .. $self->{end}
		1748	];
		1749	$#$rend = $self->{len} - 1;
		1750	return $rend;
		1751	}
		1752
		1753	()
		1754	}
		1755
		1756	sub urxvt::line::beg { $_[0]{beg} }
		1757	sub urxvt::line::end { $_[0]{end} }
		1758	sub urxvt::line::l { $_[0]{len} }
		1759
		1760	sub urxvt::line::offset_of {
		1761	my ($self, $row, $col) = @_;
		1762
		1763	($row - $self->{beg}) * $self->{ncol} + $col
		1764	}
		1765
		1766	sub urxvt::line::coord_of {
		1767	my ($self, $offset) = @_;
		1768
		1769	use integer;
		1770
		1771	(
		1772	$offset / $self->{ncol} + $self->{beg},
		1773	$offset % $self->{ncol}
		1774	)
		1775	}
		1776
		1777	=item $text = $term->special_encode $string
		1778
		1779	Converts a perl string into the special encoding used by rxvt-unicode,
		1780	where one character corresponds to one screen cell. See
		1781	C<< $term->ROW_t >> for details.
		1782
		1783	=item $string = $term->special_decode $text
		1784
		1785	Converts rxvt-unicodes text representation into a perl string. See
		1786	C<< $term->ROW_t >> for details.
		1787
		1788	=item $success = $term->grab_button ($button, $modifiermask[, $window = $term->vt])
		1789
		1790	=item $term->ungrab_button ($button, $modifiermask[, $window = $term->vt])
		1791
		1792	Register/unregister a synchronous button grab. See the XGrabButton
		1793	manpage.
		1794
		1795	=item $success = $term->grab ($eventtime[, $sync])
		1796
		1797	Calls XGrabPointer and XGrabKeyboard in asynchronous (default) or
		1798	synchronous (C<$sync> is true). Also remembers the grab timestamp.
		1799
		1800	=item $term->allow_events_async
		1801
		1802	Calls XAllowEvents with AsyncBoth for the most recent grab.
		1803
		1804	=item $term->allow_events_sync
		1805
		1806	Calls XAllowEvents with SyncBoth for the most recent grab.
		1807
		1808	=item $term->allow_events_replay
		1809
		1810	Calls XAllowEvents with both ReplayPointer and ReplayKeyboard for the most
		1811	recent grab.
		1812
		1813	=item $term->ungrab
		1814
		1815	Calls XUngrab for the most recent grab. Is called automatically on
		1816	evaluation errors, as it is better to lose the grab in the error case as
		1817	the session.
		1818
		1819	=item $atom = $term->XInternAtom ($atom_name[, $only_if_exists])
		1820
		1821	=item $atom_name = $term->XGetAtomName ($atom)
		1822
		1823	=item @atoms = $term->XListProperties ($window)
		1824
		1825	=item ($type,$format,$octets) = $term->XGetWindowProperty ($window, $property)
		1826
		1827	=item $term->XChangeWindowProperty ($window, $property, $type, $format, $octets)
		1828
		1829	=item $term->XDeleteProperty ($window, $property)
		1830
		1831	=item $window = $term->DefaultRootWindow
		1832
		1833	=item $term->XReparentWindow ($window, $parent, [$x, $y])
		1834
		1835	=item $term->XMapWindow ($window)
		1836
		1837	=item $term->XUnmapWindow ($window)
		1838
		1839	=item $term->XMoveResizeWindow ($window, $x, $y, $width, $height)
		1840
		1841	=item ($x, $y, $child_window) = $term->XTranslateCoordinates ($src, $dst, $x, $y)
		1842
		1843	=item $term->XChangeInput ($window, $add_events[, $del_events])
		1844
		1845	Various X or X-related functions. The C<$term> object only serves as
		1846	the source of the display, otherwise those functions map more-or-less
		1847	directory onto the X functions of the same name.
		1848
		1849	=back
		1850
		1851	=cut
		1852
		1853	package urxvt::popup;
		1854
		1855	=head2 The C<urxvt::popup> Class
		1856
		1857	=over 4
		1858
		1859	=cut
		1860
		1861	sub add_item {
		1862	my ($self, $item) = @_;
		1863
		1864	$item->{rend}{normal} = "\x1b[0;30;47m" unless exists $item->{rend}{normal};
		1865	$item->{rend}{hover} = "\x1b[0;30;46m" unless exists $item->{rend}{hover};
		1866	$item->{rend}{active} = "\x1b[m" unless exists $item->{rend}{active};
		1867
		1868	$item->{render} ||= sub { $_[0]{text} };
		1869
		1870	push @{ $self->{item} }, $item;
		1871	}
		1872
		1873	=item $popup->add_title ($title)
		1874
		1875	Adds a non-clickable title to the popup.
		1876
		1877	=cut
		1878
		1879	sub add_title {
		1880	my ($self, $title) = @_;
		1881
		1882	$self->add_item ({
		1883	rend => { normal => "\x1b[38;5;11;44m", hover => "\x1b[38;5;11;44m", active => "\x1b[38;5;11;44m" },
		1884	text => $title,
		1885	activate => sub { },
		1886	});
		1887	}
		1888
		1889	=item $popup->add_separator ([$sepchr])
		1890
		1891	Creates a separator, optionally using the character given as C<$sepchr>.
		1892
		1893	=cut
		1894
		1895	sub add_separator {
		1896	my ($self, $sep) = @_;
		1897
		1898	$sep ||= "=";
		1899
		1900	$self->add_item ({
		1901	rend => { normal => "\x1b[0;30;47m", hover => "\x1b[0;30;47m", active => "\x1b[0;30;47m" },
		1902	text => "",
		1903	render => sub { $sep x $self->{term}->ncol },
		1904	activate => sub { },
		1905	});
		1906	}
		1907
		1908	=item $popup->add_button ($text, $cb)
		1909
		1910	Adds a clickable button to the popup. C<$cb> is called whenever it is
		1911	selected.
		1912
		1913	=cut
		1914
		1915	sub add_button {
		1916	my ($self, $text, $cb) = @_;
		1917
		1918	$self->add_item ({ type => "button", text => $text, activate => $cb});
		1919	}
		1920
		1921	=item $popup->add_toggle ($text, $initial_value, $cb)
		1922
		1923	Adds a toggle/checkbox item to the popup. The callback gets called
		1924	whenever it gets toggled, with a boolean indicating its new value as its
		1925	first argument.
		1926
		1927	=cut
		1928
		1929	sub add_toggle {
		1930	my ($self, $text, $value, $cb) = @_;
		1931
		1932	my $item; $item = {
		1933	type => "button",
		1934	text => " $text",
		1935	value => $value,
		1936	render => sub { ($_[0]{value} ? "* " : " ") . $text },
		1937	activate => sub { $cb->($_[1]{value} = !$_[1]{value}); },
		1938	};
		1939
		1940	$self->add_item ($item);
		1941	}
		1942
		1943	=item $popup->show
		1944
		1945	Displays the popup (which is initially hidden).
		1946
		1947	=cut
		1948
		1949	sub show {
		1950	my ($self) = @_;
		1951
		1952	local $urxvt::popup::self = $self;
		1953
		1954	my $env = $self->{term}->env;
		1955	# we can't hope to reproduce the locale algorithm, so nuke LC_ALL and set LC_CTYPE.
		1956	delete $env->{LC_ALL};
		1957	$env->{LC_CTYPE} = $self->{term}->locale;
		1958
		1959	my $term = urxvt::term->new (
		1960	$env, "popup",
		1961	"--perl-lib" => "", "--perl-ext-common" => "",
		1962	"-pty-fd" => -1, "-sl" => 0,
		1963	"-b" => 1, "-bd" => "grey80", "-bl", "-override-redirect",
		1964	"--transient-for" => $self->{term}->parent,
		1965	"-display" => $self->{term}->display_id,
		1966	"-pe" => "urxvt-popup",
		1967	) or die "unable to create popup window\n";
		1968
		1969	unless (delete $term->{urxvt_popup_init_done}) {
		1970	$term->ungrab;
		1971	$term->destroy;
		1972	die "unable to initialise popup window\n";
		1973	}
		1974	}
		1975
		1976	sub DESTROY {
		1977	my ($self) = @_;
		1978
		1979	delete $self->{term}{_destroy}{$self};
		1980	$self->{term}->ungrab;
		1981	}
		1982
		1983	=back
		1984
		1985	=cut
		1986
		1987	package urxvt::watcher;
392		1988
393	=head2 The C<urxvt::timer> Class	1989	=head2 The C<urxvt::timer> Class
394		1990
395	This class implements timer watchers/events. Time is represented as a	1991	This class implements timer watchers/events. Time is represented as a
396	fractional number of seconds since the epoch. Example:	1992	fractional number of seconds since the epoch. Example:
397		1993
398	# create a digital clock display in upper right corner	1994	$term->{overlay} = $term->overlay (-1, 0, 8, 1, urxvt::OVERLAY_RSTYLE, 0);
399	$term->{timer} = urxvt::timer	1995	$term->{timer} = urxvt::timer
400	->new	1996	->new
401	->start (urxvt::NOW)	1997	->interval (1)
402	->cb (sub {	1998	->cb (sub {
403	my ($timer) = @_;
404	my $time = $timer->at;
405	$timer->start ($time + 1);
406	$self->scr_overlay (-1, 0,	1999	$term->{overlay}->set (0, 0,
407	POSIX::strftime "%H:%M:%S", localtime $time);	2000	sprintf "%2d:%02d:%02d", (localtime urxvt::NOW)[2,1,0]);
408	});	2001	});
409		2002
410	=over 4	2003	=over 4
411		2004
412	=item $timer = new urxvt::timer	2005	=item $timer = new urxvt::timer
413		2006
414	Create a new timer object in stopped state.	2007	Create a new timer object in started state. It is scheduled to fire
		2008	immediately.
415		2009
416	=item $timer = $timer->cb (sub { my ($timer) = @_; ... })	2010	=item $timer = $timer->cb (sub { my ($timer) = @_; ... })
417		2011
418	Set the callback to be called when the timer triggers.	2012	Set the callback to be called when the timer triggers.
419		2013
…		…
423		2017
424	=item $timer = $timer->set ($tstamp)	2018	=item $timer = $timer->set ($tstamp)
425		2019
426	Set the time the event is generated to $tstamp.	2020	Set the time the event is generated to $tstamp.
427		2021
		2022	=item $timer = $timer->interval ($interval)
		2023
		2024	Normally (and when C<$interval> is C<0>), the timer will automatically
		2025	stop after it has fired once. If C<$interval> is non-zero, then the timer
		2026	is automatically rescheduled at the given intervals.
		2027
428	=item $timer = $timer->start	2028	=item $timer = $timer->start
429		2029
430	Start the timer.	2030	Start the timer.
431		2031
432	=item $timer = $timer->start ($tstamp)	2032	=item $timer = $timer->start ($tstamp)
433		2033
434	Set the event trigger time to C<$tstamp> and start the timer.	2034	Set the event trigger time to C<$tstamp> and start the timer.
		2035
		2036	=item $timer = $timer->after ($delay)
		2037
		2038	Like C<start>, but sets the expiry timer to c<urxvt::NOW + $delay>.
435		2039
436	=item $timer = $timer->stop	2040	=item $timer = $timer->stop
437		2041
438	Stop the timer.	2042	Stop the timer.
439		2043
…		…
445		2049
446	$term->{socket} = ...	2050	$term->{socket} = ...
447	$term->{iow} = urxvt::iow	2051	$term->{iow} = urxvt::iow
448	->new	2052	->new
449	->fd (fileno $term->{socket})	2053	->fd (fileno $term->{socket})
450	->events (1) # wait for read data	2054	->events (urxvt::EV_READ)
451	->start	2055	->start
452	->cb (sub {	2056	->cb (sub {
453	my ($iow, $revents) = @_;	2057	my ($iow, $revents) = @_;
454	# $revents must be 1 here, no need to check	2058	# $revents must be 1 here, no need to check
455	sysread $term->{socket}, my $buf, 8192	2059	sysread $term->{socket}, my $buf, 8192
…		…
468	Set the callback to be called when io events are triggered. C<$reventmask>	2072	Set the callback to be called when io events are triggered. C<$reventmask>
469	is a bitset as described in the C<events> method.	2073	is a bitset as described in the C<events> method.
470		2074
471	=item $iow = $iow->fd ($fd)	2075	=item $iow = $iow->fd ($fd)
472		2076
473	Set the filedescriptor (not handle) to watch.	2077	Set the file descriptor (not handle) to watch.
474		2078
475	=item $iow = $iow->events ($eventmask)	2079	=item $iow = $iow->events ($eventmask)
476		2080
477	Set the event mask to watch. Bit #0 (value C<1>) enables watching for read	2081	Set the event mask to watch. The only allowed values are
478	data, Bit #1 (value C<2>) enables watching for write data.	2082	C<urxvt::EV_READ> and C<urxvt::EV_WRITE>, which might be ORed
		2083	together, or C<urxvt::EV_NONE>.
479		2084
480	=item $iow = $iow->start	2085	=item $iow = $iow->start
481		2086
482	Start watching for requested events on the given handle.	2087	Start watching for requested events on the given handle.
483		2088
484	=item $iow = $iow->stop	2089	=item $iow = $iow->stop
485		2090
486	Stop watching for events on the given filehandle.	2091	Stop watching for events on the given file handle.
		2092
		2093	=back
		2094
		2095	=head2 The C<urxvt::iw> Class
		2096
		2097	This class implements idle watchers, that get called automatically when
		2098	the process is idle. They should return as fast as possible, after doing
		2099	some useful work.
		2100
		2101	=over 4
		2102
		2103	=item $iw = new urxvt::iw
		2104
		2105	Create a new idle watcher object in stopped state.
		2106
		2107	=item $iw = $iw->cb (sub { my ($iw) = @_; ... })
		2108
		2109	Set the callback to be called when the watcher triggers.
		2110
		2111	=item $timer = $timer->start
		2112
		2113	Start the watcher.
		2114
		2115	=item $timer = $timer->stop
		2116
		2117	Stop the watcher.
		2118
		2119	=back
		2120
		2121	=head2 The C<urxvt::pw> Class
		2122
		2123	This class implements process watchers. They create an event whenever a
		2124	process exits, after which they stop automatically.
		2125
		2126	my $pid = fork;
		2127	...
		2128	$term->{pw} = urxvt::pw
		2129	->new
		2130	->start ($pid)
		2131	->cb (sub {
		2132	my ($pw, $exit_status) = @_;
		2133	...
		2134	});
		2135
		2136	=over 4
		2137
		2138	=item $pw = new urxvt::pw
		2139
		2140	Create a new process watcher in stopped state.
		2141
		2142	=item $pw = $pw->cb (sub { my ($pw, $exit_status) = @_; ... })
		2143
		2144	Set the callback to be called when the timer triggers.
		2145
		2146	=item $pw = $timer->start ($pid)
		2147
		2148	Tells the watcher to start watching for process C<$pid>.
		2149
		2150	=item $pw = $pw->stop
		2151
		2152	Stop the watcher.
487		2153
488	=back	2154	=back
489		2155
490	=head1 ENVIRONMENT	2156	=head1 ENVIRONMENT
491		2157
…		…
494	This variable controls the verbosity level of the perl extension. Higher	2160	This variable controls the verbosity level of the perl extension. Higher
495	numbers indicate more verbose output.	2161	numbers indicate more verbose output.
496		2162
497	=over 4	2163	=over 4
498		2164
499	=item 0 - only fatal messages	2165	=item == 0 - fatal messages
500		2166
501	=item 3 - script loading and management	2167	=item >= 3 - script loading and management
502		2168
503	=item 10 - all events received	2169	=item >=10 - all called hooks
		2170
		2171	=item >=11 - hook return values
504		2172
505	=back	2173	=back
506		2174
507	=head1 AUTHOR	2175	=head1 AUTHOR
508		2176
…		…
510	http://software.schmorp.de/pkg/rxvt-unicode	2178	http://software.schmorp.de/pkg/rxvt-unicode
511		2179
512	=cut	2180	=cut
513		2181
514	1	2182	1
		2183
		2184	# vim: sw=3:

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