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Revision 1.2 by root, Mon Jan 2 15:36:27 2006 UTC vs.
Revision 1.180 by root, Sat Dec 26 09:42:16 2009 UTC

		1	=encoding utf8
		2
1	=head1 NAME	3	=head1 NAME
2		4
3	urxvt - 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 $LIBDIR/perl-init/, they will be loaded automatically.	9	# create a file grab_test in $HOME:
8
9	Each script will only be loaded once, even in urxvtd, and will be valid
10	globally.
11
12	Scripts are evaluated in a 'use strict' and 'use utf8' environment, and
13	thus must be written in utf-8.
14		10
15	sub on_sel_grab {	11	sub on_sel_grab {
16	warn "you selected ", $_[0]->selection;	12	warn "you selected ", $_[0]->selection;
		13	()
17	}	14	}
18		15
19	1	16	# start a @@RXVT_NAME@@ using it:
		17
		18	@@RXVT_NAME@@ --perl-lib $HOME -pe grab_test
20		19
21	=head1 DESCRIPTION	20	=head1 DESCRIPTION
22		21
		22	Every time a terminal object gets created, extension scripts specified via
		23	the C<perl> resource are loaded and associated with it.
		24
		25	Scripts are compiled in a 'use strict' and 'use utf8' environment, and
		26	thus must be encoded as UTF-8.
		27
		28	Each script will only ever be loaded once, even in @@RXVT_NAME@@d, where
		29	scripts will be shared (but not enabled) for all terminals.
		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 overlay-osc
		309
		310	This extension implements some OSC commands to display timed popups on the
		311	screen - useful for status displays from within scripts. You have to read
		312	the sources for more info.
		313
		314	=item block-graphics-to-ascii
		315
		316	A not very useful example of filtering all text output to the terminal
		317	by replacing all line-drawing characters (U+2500 .. U+259F) by a
		318	similar-looking ascii character.
		319
		320	=item digital-clock
		321
		322	Displays a digital clock using the built-in overlay.
		323
		324	=item remote-clipboard
		325
		326	Somewhat of a misnomer, this extension adds two menu entries to the
		327	selection popup that allows one to run external commands to store the
		328	selection somewhere and fetch it again.
		329
		330	We use it to implement a "distributed selection mechanism", which just
		331	means that one command uploads the file to a remote server, and another
		332	reads it.
		333
		334	The commands can be set using the C<URxvt.remote-selection.store> and
		335	C<URxvt.remote-selection.fetch> resources. The first should read the
		336	selection to store from STDIN (always in UTF-8), the second should provide
		337	the selection data on STDOUT (also in UTF-8).
		338
		339	The defaults (which are likely useless to you) use rsh and cat:
		340
		341	URxvt.remote-selection.store: rsh ruth 'cat >/tmp/distributed-selection'
		342	URxvt.remote-selection.fetch: rsh ruth 'cat /tmp/distributed-selection'
		343
		344	=item selection-pastebin
		345
		346	This is a little rarely useful extension that Uploads the selection as
		347	textfile to a remote site (or does other things). (The implementation is
		348	not currently secure for use in a multiuser environment as it writes to
		349	F</tmp> directly.).
		350
		351	It listens to the C<selection-pastebin:remote-pastebin> keyboard command,
		352	i.e.
		353
		354	URxvt.keysym.C-M-e: perl:selection-pastebin:remote-pastebin
		355
		356	Pressing this combination runs a command with C<%> replaced by the name of
		357	the textfile. This command can be set via a resource:
		358
		359	URxvt.selection-pastebin.cmd: rsync -apP % ruth:/var/www/www.ta-sa.org/files/txt/.
		360
		361	And the default is likely not useful to anybody but the few people around
		362	here :)
		363
		364	The name of the textfile is the hex encoded md5 sum of the selection, so
		365	the same content should lead to the same filename.
		366
		367	After a successful upload the selection will be replaced by the text given
		368	in the C<selection-pastebin-url> resource (again, the % is the placeholder
		369	for the filename):
		370
		371	URxvt.selection-pastebin.url: http://www.ta-sa.org/files/txt/%
		372
		373	I<Note to xrdb users:> xrdb uses the C preprocessor, which might interpret
		374	the double C</> characters as comment start. Use C<\057\057> instead,
		375	which works regardless of wether xrdb is used to parse the resource file
		376	or not.
		377
		378	=item macosx-pastebin and macosx-pastebin-native
		379
		380	These two modules implement an extended clipboard for Mac OS X. They are
		381	used like this:
		382
		383	URxvt.perl-ext-common: default,macosx-clipboard
		384	URxvt.keysym.M-c: perl:macosx-clipboard:copy
		385	URxvt.keysym.M-v: perl:macosx-clipboard:paste
		386
		387	The difference between them is that the native variant requires a
		388	perl from apple's devkit or so, and C<maxosx-pastebin> requires the
		389	C<Mac::Pasteboard> module, works with other perls, has fewer bugs, is
		390	simpler etc. etc.
		391
		392	=item example-refresh-hooks
		393
		394	Displays a very simple digital clock in the upper right corner of the
		395	window. Illustrates overwriting the refresh callbacks to create your own
		396	overlays or changes.
		397
		398	=back
		399
		400	=head1 API DOCUMENTATION
		401
		402	=head2 General API Considerations
		403
		404	All objects (such as terminals, time watchers etc.) are typical
		405	reference-to-hash objects. The hash can be used to store anything you
		406	like. All members starting with an underscore (such as C<_ptr> or
		407	C<_hook>) are reserved for internal uses and B<MUST NOT> be accessed or
		408	modified).
		409
		410	When objects are destroyed on the C++ side, the perl object hashes are
		411	emptied, so its best to store related objects such as time watchers and
		412	the like inside the terminal object so they get destroyed as soon as the
		413	terminal is destroyed.
		414
		415	Argument names also often indicate the type of a parameter. Here are some
		416	hints on what they mean:
		417
		418	=over 4
		419
		420	=item $text
		421
		422	Rxvt-unicodes special way of encoding text, where one "unicode" character
		423	always represents one screen cell. See L<ROW_t> for a discussion of this format.
		424
		425	=item $string
		426
		427	A perl text string, with an emphasis on I<text>. It can store all unicode
		428	characters and is to be distinguished with text encoded in a specific
		429	encoding (often locale-specific) and binary data.
		430
		431	=item $octets
		432
		433	Either binary data or - more common - a text string encoded in a
		434	locale-specific way.
		435
		436	=back
		437
		438	=head2 Extension Objects
		439
		440	Every perl extension is a perl class. A separate perl object is created
		441	for each terminal, and each terminal has its own set of extenion objects,
		442	which are passed as the first parameter to hooks. So extensions can use
		443	their C<$self> object without having to think about clashes with other
		444	extensions or other terminals, with the exception of methods and members
		445	that begin with an underscore character C<_>: these are reserved for
		446	internal use.
		447
		448	Although it isn't a C<urxvt::term> object, you can call all methods of the
		449	C<urxvt::term> class on this object.
		450
		451	It has the following methods and data members:
		452
		453	=over 4
		454
		455	=item $urxvt_term = $self->{term}
		456
		457	Returns the C<urxvt::term> object associated with this instance of the
		458	extension. This member I<must not> be changed in any way.
		459
		460	=item $self->enable ($hook_name => $cb, [$hook_name => $cb..])
		461
		462	Dynamically enable the given hooks (named without the C<on_> prefix) for
		463	this extension, replacing any previous hook. This is useful when you want
		464	to overwrite time-critical hooks only temporarily.
		465
		466	=item $self->disable ($hook_name[, $hook_name..])
		467
		468	Dynamically disable the given hooks.
		469
		470	=back
		471
23	=head2 Hooks	472	=head2 Hooks
24		473
25	The following subroutines can be declared in loaded scripts, and will be called	474	The following subroutines can be declared in extension files, and will be
26	whenever the relevant event happens.	475	called whenever the relevant event happens.
27		476
28	All of them must return a boolean value. If it is true, then the event	477	The first argument passed to them is an extension object as described in
29	counts as being I<consumed>, and the invocation of other hooks is skipped,	478	the in the C<Extension Objects> section.
		479
		480	B<All> of these hooks must return a boolean value. If any of the called
		481	hooks returns true, then the event counts as being I<consumed>, and the
30	and the relevant action might not be carried out by the C++ code.	482	relevant action might not be carried out by the C++ code.
31		483
32	When in doubt, return a false value (preferably C<()>).	484	I<< When in doubt, return a false value (preferably C<()>). >>
33		485
34	=over 4	486	=over 4
35		487
36	=item on_init $term	488	=item on_init $term
37		489
38	Called after a new terminal object has been initialized, but before	490	Called after a new terminal object has been initialized, but before
39	windows are created or the command gets run.	491	windows are created or the command gets run. Most methods are unsafe to
		492	call or deliver senseless data, as terminal size and other characteristics
		493	have not yet been determined. You can safely query and change resources
		494	and options, though. For many purposes the C<on_start> hook is a better
		495	place.
		496
		497	=item on_start $term
		498
		499	Called at the very end of initialisation of a new terminal, just before
		500	trying to map (display) the toplevel and returning to the main loop.
		501
		502	=item on_destroy $term
		503
		504	Called whenever something tries to destroy terminal, when the terminal is
		505	still fully functional (not for long, though).
40		506
41	=item on_reset $term	507	=item on_reset $term
42		508
43	Called after the screen is "reset" for any reason, such as resizing or	509	Called after the screen is "reset" for any reason, such as resizing or
44	control sequences. Here is where you can react on changes to size-related	510	control sequences. Here is where you can react on changes to size-related
45	variables.	511	variables.
46		512
47	=item on_start $term	513	=item on_child_start $term, $pid
48		514
49	Called at the very end of initialisation of a new terminal, just before	515	Called just after the child process has been C<fork>ed.
50	returning to the mainloop.	516
		517	=item on_child_exit $term, $status
		518
		519	Called just after the child process has exited. C<$status> is the status
		520	from C<waitpid>.
51		521
52	=item on_sel_make $term, $eventtime	522	=item on_sel_make $term, $eventtime
53		523
54	Called whenever a selection has been made by the user, but before the	524	Called whenever a selection has been made by the user, but before the
55	selection text is copied, so changes to the beginning, end or type of the	525	selection text is copied, so changes to the beginning, end or type of the
…		…
62		532
63	Called whenever a selection has been copied, but before the selection is	533	Called whenever a selection has been copied, but before the selection is
64	requested from the server. The selection text can be queried and changed	534	requested from the server. The selection text can be queried and changed
65	by calling C<< $term->selection >>.	535	by calling C<< $term->selection >>.
66		536
67	Returning a true value aborts selection grabbing. It will still be hilighted.	537	Returning a true value aborts selection grabbing. It will still be highlighted.
68		538
69	=item on_focus_in $term	539	=item on_sel_extend $term
70		540
71	Called whenever the window gets the keyboard focus, before urxvt does	541	Called whenever the user tries to extend the selection (e.g. with a double
72	focus in processing.	542	click) and is either supposed to return false (normal operation), or
		543	should extend the selection itself and return true to suppress the built-in
		544	processing. This can happen multiple times, as long as the callback
		545	returns true, it will be called on every further click by the user and is
		546	supposed to enlarge the selection more and more, if possible.
73		547
74	=item on_focus_out $term	548	See the F<selection> example extension.
75
76	Called wheneever the window loses keyboard focus, before urxvt does focus
77	out processing.
78		549
79	=item on_view_change $term, $offset	550	=item on_view_change $term, $offset
80		551
81	Called whenever the view offset changes, i..e the user or program	552	Called whenever the view offset changes, i.e. the user or program
82	scrolls. Offset C<0> means display the normal terminal, positive values	553	scrolls. Offset C<0> means display the normal terminal, positive values
83	show this many lines of scrollback.	554	show this many lines of scrollback.
84		555
85	=item on_scroll_back $term, $lines, $saved	556	=item on_scroll_back $term, $lines, $saved
86		557
…		…
90		561
91	It is called before lines are scrolled out (so rows 0 .. min ($lines - 1,	562	It is called before lines are scrolled out (so rows 0 .. min ($lines - 1,
92	$nrow - 1) represent the lines to be scrolled out). C<$saved> is the total	563	$nrow - 1) represent the lines to be scrolled out). C<$saved> is the total
93	number of lines that will be in the scrollback buffer.	564	number of lines that will be in the scrollback buffer.
94		565
95	=item on_tty_activity $term *NYI*	566	=item on_osc_seq $term, $op, $args, $resp
96		567
97	Called whenever the program(s) running in the urxvt window send output.	568	Called on every OSC sequence and can be used to suppress it or modify its
		569	behaviour. The default should be to return an empty list. A true value
		570	suppresses execution of the request completely. Make sure you don't get
		571	confused by recursive invocations when you output an OSC sequence within
		572	this callback.
		573
		574	C<on_osc_seq_perl> should be used for new behaviour.
		575
		576	=item on_osc_seq_perl $term, $args, $resp
		577
		578	Called whenever the B<ESC ] 777 ; string ST> command sequence (OSC =
		579	operating system command) is processed. Cursor position and other state
		580	information is up-to-date when this happens. For interoperability, the
		581	string should start with the extension name (sans -osc) and a semicolon,
		582	to distinguish it from commands for other extensions, and this might be
		583	enforced in the future.
		584
		585	For example, C<overlay-osc> uses this:
		586
		587	sub on_osc_seq_perl {
		588	my ($self, $osc, $resp) = @_;
		589
		590	return unless $osc =~ s/^overlay;//;
		591
		592	... process remaining $osc string
		593	}
		594
		595	Be careful not ever to trust (in a security sense) the data you receive,
		596	as its source can not easily be controlled (e-mail content, messages from
		597	other users on the same system etc.).
		598
		599	For responses, C<$resp> contains the end-of-args separator used by the
		600	sender.
		601
		602	=item on_add_lines $term, $string
		603
		604	Called whenever text is about to be output, with the text as argument. You
		605	can filter/change and output the text yourself by returning a true value
		606	and calling C<< $term->scr_add_lines >> yourself. Please note that this
		607	might be very slow, however, as your hook is called for B<all> text being
		608	output.
		609
		610	=item on_tt_write $term, $octets
		611
		612	Called whenever some data is written to the tty/pty and can be used to
		613	suppress or filter tty input.
		614
		615	=item on_line_update $term, $row
		616
		617	Called whenever a line was updated or changed. Can be used to filter
		618	screen output (e.g. underline urls or other useless stuff). Only lines
		619	that are being shown will be filtered, and, due to performance reasons,
		620	not always immediately.
		621
		622	The row number is always the topmost row of the line if the line spans
		623	multiple rows.
		624
		625	Please note that, if you change the line, then the hook might get called
		626	later with the already-modified line (e.g. if unrelated parts change), so
		627	you cannot just toggle rendition bits, but only set them.
98		628
99	=item on_refresh_begin $term	629	=item on_refresh_begin $term
100		630
101	Called just before the screen gets redrawn. Can be used for overlay	631	Called just before the screen gets redrawn. Can be used for overlay or
102	or similar effects by modify terminal contents in refresh_begin, and	632	similar effects by modifying the terminal contents in refresh_begin, and
103	restoring them in refresh_end. The built-in overlay and selection display	633	restoring them in refresh_end. The built-in overlay and selection display
104	code is run after this hook, and takes precedence.	634	code is run after this hook, and takes precedence.
105		635
106	=item on_refresh_end $term	636	=item on_refresh_end $term
107		637
108	Called just after the screen gets redrawn. See C<on_refresh_begin>.	638	Called just after the screen gets redrawn. See C<on_refresh_begin>.
		639
		640	=item on_user_command $term, $string
		641
		642	Called whenever a user-configured event is being activated (e.g. via
		643	a C<perl:string> action bound to a key, see description of the B<keysym>
		644	resource in the @@RXVT_NAME@@(1) manpage).
		645
		646	The event is simply the action string. This interface is assumed to change
		647	slightly in the future.
		648
		649	=item on_resize_all_windows $tern, $new_width, $new_height
		650
		651	Called just after the new window size has been calculated, but before
		652	windows are actually being resized or hints are being set. If this hook
		653	returns TRUE, setting of the window hints is being skipped.
		654
		655	=item on_x_event $term, $event
		656
		657	Called on every X event received on the vt window (and possibly other
		658	windows). Should only be used as a last resort. Most event structure
		659	members are not passed.
		660
		661	=item on_root_event $term, $event
		662
		663	Like C<on_x_event>, but is called for events on the root window.
		664
		665	=item on_focus_in $term
		666
		667	Called whenever the window gets the keyboard focus, before rxvt-unicode
		668	does focus in processing.
		669
		670	=item on_focus_out $term
		671
		672	Called whenever the window loses keyboard focus, before rxvt-unicode does
		673	focus out processing.
		674
		675	=item on_configure_notify $term, $event
		676
		677	=item on_property_notify $term, $event
		678
		679	=item on_key_press $term, $event, $keysym, $octets
		680
		681	=item on_key_release $term, $event, $keysym
		682
		683	=item on_button_press $term, $event
		684
		685	=item on_button_release $term, $event
		686
		687	=item on_motion_notify $term, $event
		688
		689	=item on_map_notify $term, $event
		690
		691	=item on_unmap_notify $term, $event
		692
		693	Called whenever the corresponding X event is received for the terminal If
		694	the hook returns true, then the even will be ignored by rxvt-unicode.
		695
		696	The event is a hash with most values as named by Xlib (see the XEvent
		697	manpage), with the additional members C<row> and C<col>, which are the
		698	(real, not screen-based) row and column under the mouse cursor.
		699
		700	C<on_key_press> additionally receives the string rxvt-unicode would
		701	output, if any, in locale-specific encoding.
		702
		703	subwindow.
		704
		705	=item on_client_message $term, $event
		706
		707	=item on_wm_protocols $term, $event
		708
		709	=item on_wm_delete_window $term, $event
		710
		711	Called when various types of ClientMessage events are received (all with
		712	format=32, WM_PROTOCOLS or WM_PROTOCOLS:WM_DELETE_WINDOW).
		713
		714	=back
		715
		716	=cut
		717
		718	package urxvt;
		719
		720	use utf8;
		721	use strict;
		722	use Carp ();
		723	use Scalar::Util ();
		724	use List::Util ();
		725
		726	our $VERSION = 1;
		727	our $TERM;
		728	our @TERM_INIT;
		729	our @TERM_EXT;
		730	our @HOOKNAME;
		731	our %HOOKTYPE = map +($HOOKNAME[$_] => $_), 0..$#HOOKNAME;
		732	our %OPTION;
		733
		734	our $LIBDIR;
		735	our $RESNAME;
		736	our $RESCLASS;
		737	our $RXVTNAME;
		738
		739	our $NOCHAR = chr 0xffff;
		740
		741	=head2 Variables in the C<urxvt> Package
		742
		743	=over 4
		744
		745	=item $urxvt::LIBDIR
		746
		747	The rxvt-unicode library directory, where, among other things, the perl
		748	modules and scripts are stored.
		749
		750	=item $urxvt::RESCLASS, $urxvt::RESCLASS
		751
		752	The resource class and name rxvt-unicode uses to look up X resources.
		753
		754	=item $urxvt::RXVTNAME
		755
		756	The basename of the installed binaries, usually C<urxvt>.
		757
		758	=item $urxvt::TERM
		759
		760	The current terminal. This variable stores the current C<urxvt::term>
		761	object, whenever a callback/hook is executing.
		762
		763	=item @urxvt::TERM_INIT
		764
		765	All code references in this array will be called as methods of the next newly
		766	created C<urxvt::term> object (during the C<on_init> phase). The array
		767	gets cleared before the code references that were in it are being executed,
		768	so references can push themselves onto it again if they so desire.
		769
		770	This complements to the perl-eval command line option, but gets executed
		771	first.
		772
		773	=item @urxvt::TERM_EXT
		774
		775	Works similar to C<@TERM_INIT>, but contains perl package/class names, which
		776	get registered as normal extensions after calling the hooks in C<@TERM_INIT>
		777	but before other extensions. Gets cleared just like C<@TERM_INIT>.
109		778
110	=back	779	=back
111		780
112	=head2 Functions in the C<urxvt> Package	781	=head2 Functions in the C<urxvt> Package
113		782
…		…
119	costs! The only time this is acceptable is when the terminal process	788	costs! The only time this is acceptable is when the terminal process
120	starts up.	789	starts up.
121		790
122	=item urxvt::warn $string	791	=item urxvt::warn $string
123		792
124	Calls C<rxvt_warn> witht eh given string which should not include a	793	Calls C<rxvt_warn> with the given string which should not include a
125	newline. The module also overwrites the C<warn> builtin with a function	794	newline. The module also overwrites the C<warn> builtin with a function
126	that calls this function.	795	that calls this function.
127		796
128	Using this function has the advantage that its output ends up in the	797	Using this function has the advantage that its output ends up in the
129	correct place, e.g. on stderr of the connecting urxvtc client.	798	correct place, e.g. on stderr of the connecting urxvtc client.
130		799
131	=item $cellwidth = urxvt::wcswidth $string	800	Messages have a size limit of 1023 bytes currently.
132		801
133	Returns the number of screen-cells this string would need. Correctly	802	=item @terms = urxvt::termlist
134	accounts for wide and combining characters.	803
		804	Returns all urxvt::term objects that exist in this process, regardless of
		805	whether they are started, being destroyed etc., so be careful. Only term
		806	objects that have perl extensions attached will be returned (because there
		807	is no urxvt::term objet associated with others).
135		808
136	=item $time = urxvt::NOW	809	=item $time = urxvt::NOW
137		810
138	Returns the "current time" (as per the event loop).	811	Returns the "current time" (as per the event loop).
139		812
		813	=item urxvt::CurrentTime
		814
		815	=item urxvt::ShiftMask, LockMask, ControlMask, Mod1Mask, Mod2Mask,
		816	Mod3Mask, Mod4Mask, Mod5Mask, Button1Mask, Button2Mask, Button3Mask,
		817	Button4Mask, Button5Mask, AnyModifier
		818
		819	=item urxvt::NoEventMask, KeyPressMask, KeyReleaseMask,
		820	ButtonPressMask, ButtonReleaseMask, EnterWindowMask, LeaveWindowMask,
		821	PointerMotionMask, PointerMotionHintMask, Button1MotionMask, Button2MotionMask,
		822	Button3MotionMask, Button4MotionMask, Button5MotionMask, ButtonMotionMask,
		823	KeymapStateMask, ExposureMask, VisibilityChangeMask, StructureNotifyMask,
		824	ResizeRedirectMask, SubstructureNotifyMask, SubstructureRedirectMask,
		825	FocusChangeMask, PropertyChangeMask, ColormapChangeMask, OwnerGrabButtonMask
		826
		827	=item urxvt::KeyPress, KeyRelease, ButtonPress, ButtonRelease, MotionNotify,
		828	EnterNotify, LeaveNotify, FocusIn, FocusOut, KeymapNotify, Expose,
		829	GraphicsExpose, NoExpose, VisibilityNotify, CreateNotify, DestroyNotify,
		830	UnmapNotify, MapNotify, MapRequest, ReparentNotify, ConfigureNotify,
		831	ConfigureRequest, GravityNotify, ResizeRequest, CirculateNotify,
		832	CirculateRequest, PropertyNotify, SelectionClear, SelectionRequest,
		833	SelectionNotify, ColormapNotify, ClientMessage, MappingNotify
		834
		835	Various constants for use in X calls and event processing.
		836
		837	=back
		838
		839	=head2 RENDITION
		840
		841	Rendition bitsets contain information about colour, font, font styles and
		842	similar information for each screen cell.
		843
		844	The following "macros" deal with changes in rendition sets. You should
		845	never just create a bitset, you should always modify an existing one,
		846	as they contain important information required for correct operation of
		847	rxvt-unicode.
		848
		849	=over 4
		850
		851	=item $rend = urxvt::DEFAULT_RSTYLE
		852
		853	Returns the default rendition, as used when the terminal is starting up or
		854	being reset. Useful as a base to start when creating renditions.
		855
		856	=item $rend = urxvt::OVERLAY_RSTYLE
		857
		858	Return the rendition mask used for overlays by default.
		859
		860	=item $rendbit = urxvt::RS_Bold, RS_Italic, RS_Blink, RS_RVid, RS_Uline
		861
		862	Return the bit that enabled bold, italic, blink, reverse-video and
		863	underline, respectively. To enable such a style, just logically OR it into
		864	the bitset.
		865
		866	=item $foreground = urxvt::GET_BASEFG $rend
		867
		868	=item $background = urxvt::GET_BASEBG $rend
		869
		870	Return the foreground/background colour index, respectively.
		871
		872	=item $rend = urxvt::SET_FGCOLOR $rend, $new_colour
		873
		874	=item $rend = urxvt::SET_BGCOLOR $rend, $new_colour
		875
		876	=item $rend = urxvt::SET_COLOR $rend, $new_fg, $new_bg
		877
		878	Replace the foreground/background colour in the rendition mask with the
		879	specified one.
		880
		881	=item $value = urxvt::GET_CUSTOM $rend
		882
		883	Return the "custom" value: Every rendition has 5 bits for use by
		884	extensions. They can be set and changed as you like and are initially
		885	zero.
		886
		887	=item $rend = urxvt::SET_CUSTOM $rend, $new_value
		888
		889	Change the custom value.
		890
		891	=back
		892
140	=cut	893	=cut
141		894
142	package urxvt;
143
144	use strict;
145
146	our $term;
147	our @HOOKNAME;
148	our $LIBDIR;
149
150	BEGIN {	895	BEGIN {
151	urxvt->bootstrap;
152
153	# overwrite perl's warn	896	# overwrite perl's warn
154	*CORE::GLOBAL::warn = sub {	897	*CORE::GLOBAL::warn = sub {
155	my $msg = join "", @_;	898	my $msg = join "", @_;
156	$msg .= "\n"	899	$msg .= "\n"
157	unless $msg =~ /\n$/;	900	unless $msg =~ /\n$/;
158	urxvt::warn ($msg);	901	urxvt::warn ($msg);
159	};	902	};
160	}	903	}
161		904
		905	no warnings 'utf8';
		906
162	my $verbosity = $ENV{URXVT_PERL_VERBOSITY} || 10;	907	my $verbosity = $ENV{URXVT_PERL_VERBOSITY};
163		908
164	sub verbose {	909	sub verbose {
165	my ($level, $msg) = @_;	910	my ($level, $msg) = @_;
166	warn "$msg\n"; #d#	911	warn "$msg\n" if $level <= $verbosity;
167	}	912	}
168		913
169	my @invoke_cb;	914	my %extension_pkg;
		915
		916	# load a single script into its own package, once only
		917	sub extension_package($) {
		918	my ($path) = @_;
		919
		920	$extension_pkg{$path} ||= do {
		921	$path =~ /([^\/\\]+)$/;
		922	my $pkg = $1;
		923	$pkg =~ s/[^[:word:]]/_/g;
		924	$pkg = "urxvt::ext::$pkg";
		925
		926	verbose 3, "loading extension '$path' into package '$pkg'";
		927
		928	open my $fh, "<:raw", $path
		929	or die "$path: $!";
		930
		931	my $source =
		932	"package $pkg; use strict; use utf8; no warnings 'utf8';\n"
		933	. "#line 1 \"$path\"\n{\n"
		934	. (do { local $/; <$fh> })
		935	. "\n};\n1";
		936
		937	eval $source
		938	or die "$path: $@";
		939
		940	$pkg
		941	}
		942	}
		943
		944	our $retval; # return value for urxvt
170		945
171	# called by the rxvt core	946	# called by the rxvt core
172	sub invoke {	947	sub invoke {
173	local $term = shift;	948	local $TERM = shift;
174	my $htype = shift;	949	my $htype = shift;
175		950
176	my $cb = $invoke_cb[$htype];	951	if ($htype == 0) { # INIT
		952	my @dirs = ((split /:/, $TERM->resource ("perl_lib")), "$LIBDIR/perl");
177		953
178	verbose 10, "$HOOKNAME[$htype] (" . (join ", ", $term, @_) . ")"	954	my %ext_arg;
179	if $verbosity >= 10;
180		955
181	while (my ($k, $v) = each %$cb) {	956	{
182	return 1 if $v->($term, @_);	957	my @init = @TERM_INIT;
		958	@TERM_INIT = ();
		959	$_->($TERM) for @init;
		960	my @pkg = @TERM_EXT;
		961	@TERM_EXT = ();
		962	$TERM->register_package ($_) for @pkg;
		963	}
		964
		965	for (grep $_, map { split /,/, $TERM->resource ("perl_ext_$_") } 1, 2) {
		966	if ($_ eq "default") {
		967	$ext_arg{$_} ||= [] for qw(selection option-popup selection-popup searchable-scrollback readline);
		968	} elsif (/^-(.*)$/) {
		969	delete $ext_arg{$1};
		970	} elsif (/^([^<]+)<(.*)>$/) {
		971	push @{ $ext_arg{$1} }, $2;
		972	} else {
		973	$ext_arg{$_} ||= [];
		974	}
		975	}
		976
		977	for my $ext (sort keys %ext_arg) {
		978	my @files = grep -f $_, map "$_/$ext", @dirs;
		979
		980	if (@files) {
		981	$TERM->register_package (extension_package $files[0], $ext_arg{$ext});
		982	} else {
		983	warn "perl extension '$ext' not found in perl library search path\n";
		984	}
		985	}
		986
		987	eval "#line 1 \"--perl-eval resource/argument\"\n" . $TERM->resource ("perl_eval");
		988	warn $@ if $@;
183	}	989	}
184		990
		991	$retval = undef;
		992
		993	if (my $cb = $TERM->{_hook}[$htype]) {
		994	verbose 10, "$HOOKNAME[$htype] (" . (join ", ", $TERM, @_) . ")"
		995	if $verbosity >= 10;
		996
		997	for my $pkg (keys %$cb) {
		998	my $retval_ = eval { $cb->{$pkg}->($TERM->{_pkg}{$pkg}, @_) };
		999	$retval ||= $retval_;
		1000
		1001	if ($@) {
		1002	$TERM->ungrab; # better to lose the grab than the session
		1003	warn $@;
		1004	}
		1005	}
		1006
		1007	verbose 11, "$HOOKNAME[$htype] returning <$retval>"
		1008	if $verbosity >= 11;
185	0	1009	}
		1010
		1011	if ($htype == 1) { # DESTROY
		1012	# clear package objects
		1013	%$_ = () for values %{ $TERM->{_pkg} };
		1014
		1015	# clear package
		1016	%$TERM = ();
		1017	}
		1018
		1019	$retval
186	}	1020	}
		1021
		1022	sub SET_COLOR($$$) {
		1023	SET_BGCOLOR (SET_FGCOLOR ($_[0], $_[1]), $_[2])
		1024	}
		1025
		1026	sub rend2mask {
		1027	no strict 'refs';
		1028	my ($str, $mask) = (@_, 0);
		1029	my %color = ( fg => undef, bg => undef );
		1030	my @failed;
		1031	for my $spec ( split /\s+/, $str ) {
		1032	if ( $spec =~ /^([fb]g)[_:-]?(\d+)/i ) {
		1033	$color{lc($1)} = $2;
		1034	} else {
		1035	my $neg = $spec =~ s/^[-^]//;
		1036	unless ( exists &{"RS_$spec"} ) {
		1037	push @failed, $spec;
		1038	next;
		1039	}
		1040	my $cur = &{"RS_$spec"};
		1041	if ( $neg ) {
		1042	$mask &= ~$cur;
		1043	} else {
		1044	$mask |= $cur;
		1045	}
		1046	}
		1047	}
		1048	($mask, @color{qw(fg bg)}, \@failed)
		1049	}
		1050
		1051	# urxvt::term::extension
		1052
		1053	package urxvt::term::extension;
		1054
		1055	sub enable {
		1056	my ($self, %hook) = @_;
		1057	my $pkg = $self->{_pkg};
		1058
		1059	while (my ($name, $cb) = each %hook) {
		1060	my $htype = $HOOKTYPE{uc $name};
		1061	defined $htype
		1062	or Carp::croak "unsupported hook type '$name'";
		1063
		1064	$self->set_should_invoke ($htype, +1)
		1065	unless exists $self->{term}{_hook}[$htype]{$pkg};
		1066
		1067	$self->{term}{_hook}[$htype]{$pkg} = $cb;
		1068	}
		1069	}
		1070
		1071	sub disable {
		1072	my ($self, @hook) = @_;
		1073	my $pkg = $self->{_pkg};
		1074
		1075	for my $name (@hook) {
		1076	my $htype = $HOOKTYPE{uc $name};
		1077	defined $htype
		1078	or Carp::croak "unsupported hook type '$name'";
		1079
		1080	$self->set_should_invoke ($htype, -1)
		1081	if delete $self->{term}{_hook}[$htype]{$pkg};
		1082	}
		1083	}
		1084
		1085	our $AUTOLOAD;
		1086
		1087	sub AUTOLOAD {
		1088	$AUTOLOAD =~ /:([^:]+)$/
		1089	or die "FATAL: \$AUTOLOAD '$AUTOLOAD' unparsable";
		1090
		1091	eval qq{
		1092	sub $AUTOLOAD {
		1093	my \$proxy = shift;
		1094	\$proxy->{term}->$1 (\@_)
		1095	}
		1096	1
		1097	} or die "FATAL: unable to compile method forwarder: $@";
		1098
		1099	goto &$AUTOLOAD;
		1100	}
		1101
		1102	sub DESTROY {
		1103	# nop
		1104	}
		1105
		1106	# urxvt::destroy_hook
		1107
		1108	sub urxvt::destroy_hook::DESTROY {
		1109	${$_[0]}->();
		1110	}
		1111
		1112	sub urxvt::destroy_hook(&) {
		1113	bless \shift, urxvt::destroy_hook::
		1114	}
		1115
		1116	package urxvt::anyevent;
		1117
		1118	=head2 The C<urxvt::anyevent> Class
		1119
		1120	The sole purpose of this class is to deliver an interface to the
		1121	C<AnyEvent> module - any module using it will work inside urxvt without
		1122	further programming. The only exception is that you cannot wait on
		1123	condition variables, but non-blocking condvar use is ok. What this means
		1124	is that you cannot use blocking APIs, but the non-blocking variant should
		1125	work.
		1126
		1127	=cut
		1128
		1129	our $VERSION = '5.23';
		1130
		1131	$INC{"urxvt/anyevent.pm"} = 1; # mark us as there
		1132	push @AnyEvent::REGISTRY, [urxvt => urxvt::anyevent::];
		1133
		1134	sub timer {
		1135	my ($class, %arg) = @_;
		1136
		1137	my $cb = $arg{cb};
		1138
		1139	urxvt::timer
		1140	->new
		1141	->after ($arg{after}, $arg{interval})
		1142	->cb ($arg{interval} ? $cb : sub {
		1143	$_[0]->stop; # need to cancel manually
		1144	$cb->();
		1145	})
		1146	}
		1147
		1148	sub io {
		1149	my ($class, %arg) = @_;
		1150
		1151	my $cb = $arg{cb};
		1152	my $fd = fileno $arg{fh};
		1153	defined $fd or $fd = $arg{fh};
		1154
		1155	bless [$arg{fh}, urxvt::iow
		1156	->new
		1157	->fd ($fd)
		1158	->events (($arg{poll} =~ /r/ ? 1 : 0)
		1159	| ($arg{poll} =~ /w/ ? 2 : 0))
		1160	->start
		1161	->cb ($cb)
		1162	], urxvt::anyevent::
		1163	}
		1164
		1165	sub idle {
		1166	my ($class, %arg) = @_;
		1167
		1168	my $cb = $arg{cb};
		1169
		1170	urxvt::iw
		1171	->new
		1172	->start
		1173	->cb ($cb)
		1174	}
		1175
		1176	sub child {
		1177	my ($class, %arg) = @_;
		1178
		1179	my $cb = $arg{cb};
		1180
		1181	urxvt::pw
		1182	->new
		1183	->start ($arg{pid})
		1184	->cb (sub {
		1185	$_[0]->stop; # need to cancel manually
		1186	$cb->($_[0]->rpid, $_[0]->rstatus);
		1187	})
		1188	}
		1189
		1190	sub DESTROY {
		1191	$_[0][1]->stop;
		1192	}
		1193
		1194	sub one_event {
		1195	Carp::croak "AnyEvent->one_event blocking wait unsupported in urxvt, use a non-blocking API";
		1196	}
		1197
		1198	package urxvt::term;
		1199
		1200	=head2 The C<urxvt::term> Class
		1201
		1202	=over 4
		1203
		1204	=cut
187		1205
188	# find on_xxx subs in the package and register them	1206	# find on_xxx subs in the package and register them
189	# as hooks	1207	# as hooks
190	sub register_package($) {	1208	sub register_package {
191	my ($pkg) = @_;	1209	my ($self, $pkg, $argv) = @_;
192		1210
		1211	no strict 'refs';
		1212
		1213	urxvt::verbose 6, "register package $pkg to $self";
		1214
		1215	@{"$pkg\::ISA"} = urxvt::term::extension::;
		1216
		1217	my $proxy = bless {
		1218	_pkg => $pkg,
		1219	argv => $argv,
		1220	}, $pkg;
		1221	Scalar::Util::weaken ($proxy->{term} = $self);
		1222
		1223	$self->{_pkg}{$pkg} = $proxy;
		1224
193	for my $hook (0.. $#HOOKNAME) {	1225	for my $name (@HOOKNAME) {
194	my $name = $HOOKNAME[$hook];
195
196	my $ref = $pkg->can ("on_" . lc $name)	1226	if (my $ref = $pkg->can ("on_" . lc $name)) {
197	or next;	1227	$proxy->enable ($name => $ref);
198		1228	}
199	$invoke_cb[$hook]{$ref*1} = $ref;
200	set_should_invoke $hook, 1;
201	}	1229	}
202	}	1230	}
203		1231
204	my $script_pkg = "script0000";	1232	=item $term = new urxvt::term $envhashref, $rxvtname, [arg...]
205	my %script_pkg;
206		1233
207	# load a single script into its own package, once only	1234	Creates a new terminal, very similar as if you had started it with system
208	sub load_script($) {	1235	C<$rxvtname, arg...>. C<$envhashref> must be a reference to a C<%ENV>-like
		1236	hash which defines the environment of the new terminal.
		1237
		1238	Croaks (and probably outputs an error message) if the new instance
		1239	couldn't be created. Returns C<undef> if the new instance didn't
		1240	initialise perl, and the terminal object otherwise. The C<init> and
		1241	C<start> hooks will be called before this call returns, and are free to
		1242	refer to global data (which is race free).
		1243
		1244	=cut
		1245
		1246	sub new {
		1247	my ($class, $env, @args) = @_;
		1248
		1249	$env or Carp::croak "environment hash missing in call to urxvt::term->new";
		1250	@args or Carp::croak "name argument missing in call to urxvt::term->new";
		1251
		1252	_new ([ map "$_=$env->{$_}", keys %$env ], \@args);
		1253	}
		1254
		1255	=item $term->destroy
		1256
		1257	Destroy the terminal object (close the window, free resources
		1258	etc.). Please note that @@RXVT_NAME@@ will not exit as long as any event
		1259	watchers (timers, io watchers) are still active.
		1260
		1261	=item $term->exec_async ($cmd[, @args])
		1262
		1263	Works like the combination of the C<fork>/C<exec> builtins, which executes
		1264	("starts") programs in the background. This function takes care of setting
		1265	the user environment before exec'ing the command (e.g. C<PATH>) and should
		1266	be preferred over explicit calls to C<exec> or C<system>.
		1267
		1268	Returns the pid of the subprocess or C<undef> on error.
		1269
		1270	=cut
		1271
		1272	sub exec_async {
		1273	my $self = shift;
		1274
		1275	my $pid = fork;
		1276
		1277	return $pid
		1278	if !defined $pid or $pid;
		1279
		1280	%ENV = %{ $self->env };
		1281
		1282	exec @_;
		1283	urxvt::_exit 255;
		1284	}
		1285
		1286	=item $isset = $term->option ($optval[, $set])
		1287
		1288	Returns true if the option specified by C<$optval> is enabled, and
		1289	optionally change it. All option values are stored by name in the hash
		1290	C<%urxvt::OPTION>. Options not enabled in this binary are not in the hash.
		1291
		1292	Here is a likely non-exhaustive list of option names, please see the
		1293	source file F</src/optinc.h> to see the actual list:
		1294
		1295	borderLess console cursorBlink cursorUnderline hold iconic insecure
		1296	intensityStyles jumpScroll loginShell mapAlert meta8 mouseWheelScrollPage
		1297	override-redirect pastableTabs pointerBlank reverseVideo scrollBar
		1298	scrollBar_floating scrollBar_right scrollTtyKeypress scrollTtyOutput
		1299	scrollWithBuffer secondaryScreen secondaryScroll skipBuiltinGlyphs
		1300	transparent tripleclickwords utmpInhibit visualBell
		1301
		1302	=item $value = $term->resource ($name[, $newval])
		1303
		1304	Returns the current resource value associated with a given name and
		1305	optionally sets a new value. Setting values is most useful in the C<init>
		1306	hook. Unset resources are returned and accepted as C<undef>.
		1307
		1308	The new value must be properly encoded to a suitable character encoding
		1309	before passing it to this method. Similarly, the returned value may need
		1310	to be converted from the used encoding to text.
		1311
		1312	Resource names are as defined in F<src/rsinc.h>. Colours can be specified
		1313	as resource names of the form C<< color+<index> >>, e.g. C<color+5>. (will
		1314	likely change).
		1315
		1316	Please note that resource strings will currently only be freed when the
		1317	terminal is destroyed, so changing options frequently will eat memory.
		1318
		1319	Here is a likely non-exhaustive list of resource names, not all of which
		1320	are supported in every build, please see the source file F</src/rsinc.h>
		1321	to see the actual list:
		1322
		1323	answerbackstring backgroundPixmap backspace_key boldFont boldItalicFont
		1324	borderLess chdir color cursorBlink cursorUnderline cutchars delete_key
		1325	display_name embed ext_bwidth fade font geometry hold iconName
		1326	imFont imLocale inputMethod insecure int_bwidth intensityStyles
		1327	italicFont jumpScroll lineSpace letterSpace loginShell mapAlert meta8
		1328	modifier mouseWheelScrollPage name override_redirect pastableTabs path
		1329	perl_eval perl_ext_1 perl_ext_2 perl_lib pointerBlank pointerBlankDelay
		1330	preeditType print_pipe pty_fd reverseVideo saveLines scrollBar
		1331	scrollBar_align scrollBar_floating scrollBar_right scrollBar_thickness
		1332	scrollTtyKeypress scrollTtyOutput scrollWithBuffer scrollstyle
		1333	secondaryScreen secondaryScroll shade term_name title
		1334	transient_for transparent transparent_all tripleclickwords utmpInhibit
		1335	visualBell
		1336
		1337	=cut
		1338
		1339	sub resource($$;$) {
		1340	my ($self, $name) = (shift, shift);
		1341	unshift @_, $self, $name, ($name =~ s/\s*\+\s*(\d+)$// ? $1 : 0);
		1342	goto &urxvt::term::_resource
		1343	}
		1344
		1345	=item $value = $term->x_resource ($pattern)
		1346
		1347	Returns the X-Resource for the given pattern, excluding the program or
		1348	class name, i.e. C<< $term->x_resource ("boldFont") >> should return the
		1349	same value as used by this instance of rxvt-unicode. Returns C<undef> if no
		1350	resource with that pattern exists.
		1351
		1352	This method should only be called during the C<on_start> hook, as there is
		1353	only one resource database per display, and later invocations might return
		1354	the wrong resources.
		1355
		1356	=item $success = $term->parse_keysym ($keysym_spec, $command_string)
		1357
		1358	Adds a keymap translation exactly as specified via a resource. See the
		1359	C<keysym> resource in the @@RXVT_NAME@@(1) manpage.
		1360
		1361	=item $rend = $term->rstyle ([$new_rstyle])
		1362
		1363	Return and optionally change the current rendition. Text that is output by
		1364	the terminal application will use this style.
		1365
		1366	=item ($row, $col) = $term->screen_cur ([$row, $col])
		1367
		1368	Return the current coordinates of the text cursor position and optionally
		1369	set it (which is usually bad as applications don't expect that).
		1370
		1371	=item ($row, $col) = $term->selection_mark ([$row, $col])
		1372
		1373	=item ($row, $col) = $term->selection_beg ([$row, $col])
		1374
		1375	=item ($row, $col) = $term->selection_end ([$row, $col])
		1376
		1377	Return the current values of the selection mark, begin or end positions.
		1378
		1379	When arguments are given, then the selection coordinates are set to
		1380	C<$row> and C<$col>, and the selection screen is set to the current
		1381	screen.
		1382
		1383	=item $screen = $term->selection_screen ([$screen])
		1384
		1385	Returns the current selection screen, and then optionally sets it.
		1386
		1387	=item $term->selection_make ($eventtime[, $rectangular])
		1388
		1389	Tries to make a selection as set by C<selection_beg> and
		1390	C<selection_end>. If C<$rectangular> is true (default: false), a
		1391	rectangular selection will be made. This is the prefered function to make
		1392	a selection.
		1393
		1394	=item $success = $term->selection_grab ($eventtime)
		1395
		1396	Try to request the primary selection text from the server (for example, as
		1397	set by the next method). No visual feedback will be given. This function
		1398	is mostly useful from within C<on_sel_grab> hooks.
		1399
		1400	=item $oldtext = $term->selection ([$newtext])
		1401
		1402	Return the current selection text and optionally replace it by C<$newtext>.
		1403
		1404	=item $term->overlay_simple ($x, $y, $text)
		1405
		1406	Create a simple multi-line overlay box. See the next method for details.
		1407
		1408	=cut
		1409
		1410	sub overlay_simple {
		1411	my ($self, $x, $y, $text) = @_;
		1412
		1413	my @lines = split /\n/, $text;
		1414
		1415	my $w = List::Util::max map $self->strwidth ($_), @lines;
		1416
		1417	my $overlay = $self->overlay ($x, $y, $w, scalar @lines);
		1418	$overlay->set (0, $_, $lines[$_]) for 0.. $#lines;
		1419
		1420	$overlay
		1421	}
		1422
		1423	=item $term->overlay ($x, $y, $width, $height[, $rstyle[, $border]])
		1424
		1425	Create a new (empty) overlay at the given position with the given
		1426	width/height. C<$rstyle> defines the initial rendition style
		1427	(default: C<OVERLAY_RSTYLE>).
		1428
		1429	If C<$border> is C<2> (default), then a decorative border will be put
		1430	around the box.
		1431
		1432	If either C<$x> or C<$y> is negative, then this is counted from the
		1433	right/bottom side, respectively.
		1434
		1435	This method returns an urxvt::overlay object. The overlay will be visible
		1436	as long as the perl object is referenced.
		1437
		1438	The methods currently supported on C<urxvt::overlay> objects are:
		1439
		1440	=over 4
		1441
		1442	=item $overlay->set ($x, $y, $text[, $rend])
		1443
		1444	Similar to C<< $term->ROW_t >> and C<< $term->ROW_r >> in that it puts
		1445	text in rxvt-unicode's special encoding and an array of rendition values
		1446	at a specific position inside the overlay.
		1447
		1448	If C<$rend> is missing, then the rendition will not be changed.
		1449
		1450	=item $overlay->hide
		1451
		1452	If visible, hide the overlay, but do not destroy it.
		1453
		1454	=item $overlay->show
		1455
		1456	If hidden, display the overlay again.
		1457
		1458	=back
		1459
		1460	=item $popup = $term->popup ($event)
		1461
		1462	Creates a new C<urxvt::popup> object that implements a popup menu. The
		1463	C<$event> I<must> be the event causing the menu to pop up (a button event,
		1464	currently).
		1465
		1466	=cut
		1467
		1468	sub popup {
		1469	my ($self, $event) = @_;
		1470
		1471	$self->grab ($event->{time}, 1)
		1472	or return;
		1473
		1474	my $popup = bless {
		1475	term => $self,
		1476	event => $event,
		1477	}, urxvt::popup::;
		1478
		1479	Scalar::Util::weaken $popup->{term};
		1480
		1481	$self->{_destroy}{$popup} = urxvt::destroy_hook { $popup->{popup}->destroy };
		1482	Scalar::Util::weaken $self->{_destroy}{$popup};
		1483
		1484	$popup
		1485	}
		1486
		1487	=item $cellwidth = $term->strwidth ($string)
		1488
		1489	Returns the number of screen-cells this string would need. Correctly
		1490	accounts for wide and combining characters.
		1491
		1492	=item $octets = $term->locale_encode ($string)
		1493
		1494	Convert the given text string into the corresponding locale encoding.
		1495
		1496	=item $string = $term->locale_decode ($octets)
		1497
		1498	Convert the given locale-encoded octets into a perl string.
		1499
		1500	=item $term->scr_xor_span ($beg_row, $beg_col, $end_row, $end_col[, $rstyle])
		1501
		1502	XORs the rendition values in the given span with the provided value
		1503	(default: C<RS_RVid>), which I<MUST NOT> contain font styles. Useful in
		1504	refresh hooks to provide effects similar to the selection.
		1505
		1506	=item $term->scr_xor_rect ($beg_row, $beg_col, $end_row, $end_col[, $rstyle1[, $rstyle2]])
		1507
		1508	Similar to C<scr_xor_span>, but xors a rectangle instead. Trailing
		1509	whitespace will additionally be xored with the C<$rstyle2>, which defaults
		1510	to C<RS_RVid | RS_Uline>, which removes reverse video again and underlines
		1511	it instead. Both styles I<MUST NOT> contain font styles.
		1512
		1513	=item $term->scr_bell
		1514
		1515	Ring the bell!
		1516
		1517	=item $term->scr_add_lines ($string)
		1518
		1519	Write the given text string to the screen, as if output by the application
		1520	running inside the terminal. It may not contain command sequences (escape
		1521	codes), but is free to use line feeds, carriage returns and tabs. The
		1522	string is a normal text string, not in locale-dependent encoding.
		1523
		1524	Normally its not a good idea to use this function, as programs might be
		1525	confused by changes in cursor position or scrolling. Its useful inside a
		1526	C<on_add_lines> hook, though.
		1527
		1528	=item $term->scr_change_screen ($screen)
		1529
		1530	Switch to given screen - 0 primary, 1 secondary.
		1531
		1532	=item $term->cmd_parse ($octets)
		1533
		1534	Similar to C<scr_add_lines>, but the argument must be in the
		1535	locale-specific encoding of the terminal and can contain command sequences
		1536	(escape codes) that will be interpreted.
		1537
		1538	=item $term->tt_write ($octets)
		1539
		1540	Write the octets given in C<$data> to the tty (i.e. as program input). To
		1541	pass characters instead of octets, you should convert your strings first
		1542	to the locale-specific encoding using C<< $term->locale_encode >>.
		1543
		1544	=item $old_events = $term->pty_ev_events ([$new_events])
		1545
		1546	Replaces the event mask of the pty watcher by the given event mask. Can
		1547	be used to suppress input and output handling to the pty/tty. See the
		1548	description of C<< urxvt::timer->events >>. Make sure to always restore
		1549	the previous value.
		1550
		1551	=item $fd = $term->pty_fd
		1552
		1553	Returns the master file descriptor for the pty in use, or C<-1> if no pty
		1554	is used.
		1555
		1556	=item $windowid = $term->parent
		1557
		1558	Return the window id of the toplevel window.
		1559
		1560	=item $windowid = $term->vt
		1561
		1562	Return the window id of the terminal window.
		1563
		1564	=item $term->vt_emask_add ($x_event_mask)
		1565
		1566	Adds the specified events to the vt event mask. Useful e.g. when you want
		1567	to receive pointer events all the times:
		1568
		1569	$term->vt_emask_add (urxvt::PointerMotionMask);
		1570
		1571	=item $term->focus_in
		1572
		1573	=item $term->focus_out
		1574
		1575	=item $term->key_press ($state, $keycode[, $time])
		1576
		1577	=item $term->key_release ($state, $keycode[, $time])
		1578
		1579	Deliver various fake events to to terminal.
		1580
		1581	=item $window_width = $term->width
		1582
		1583	=item $window_height = $term->height
		1584
		1585	=item $font_width = $term->fwidth
		1586
		1587	=item $font_height = $term->fheight
		1588
		1589	=item $font_ascent = $term->fbase
		1590
		1591	=item $terminal_rows = $term->nrow
		1592
		1593	=item $terminal_columns = $term->ncol
		1594
		1595	=item $has_focus = $term->focus
		1596
		1597	=item $is_mapped = $term->mapped
		1598
		1599	=item $max_scrollback = $term->saveLines
		1600
		1601	=item $nrow_plus_saveLines = $term->total_rows
		1602
		1603	=item $topmost_scrollback_row = $term->top_row
		1604
		1605	Return various integers describing terminal characteristics.
		1606
		1607	=item $x_display = $term->display_id
		1608
		1609	Return the DISPLAY used by rxvt-unicode.
		1610
		1611	=item $lc_ctype = $term->locale
		1612
		1613	Returns the LC_CTYPE category string used by this rxvt-unicode.
		1614
		1615	=item $env = $term->env
		1616
		1617	Returns a copy of the environment in effect for the terminal as a hashref
		1618	similar to C<\%ENV>.
		1619
		1620	=item @envv = $term->envv
		1621
		1622	Returns the environment as array of strings of the form C<VAR=VALUE>.
		1623
		1624	=item @argv = $term->argv
		1625
		1626	Return the argument vector as this terminal, similar to @ARGV, but
		1627	includes the program name as first element.
		1628
		1629	=cut
		1630
		1631	sub env {
		1632	+{ map /^([^=]+)(?:=(.*))?$/s && ($1 => $2), $_[0]->envv }
		1633	}
		1634
		1635	=item $modifiermask = $term->ModLevel3Mask
		1636
		1637	=item $modifiermask = $term->ModMetaMask
		1638
		1639	=item $modifiermask = $term->ModNumLockMask
		1640
		1641	Return the modifier masks corresponding to the "ISO Level 3 Shift" (often
		1642	AltGr), the meta key (often Alt) and the num lock key, if applicable.
		1643
		1644	=item $screen = $term->current_screen
		1645
		1646	Returns the currently displayed screen (0 primary, 1 secondary).
		1647
		1648	=item $cursor_is_hidden = $term->hidden_cursor
		1649
		1650	Returns whether the cursor is currently hidden or not.
		1651
		1652	=item $view_start = $term->view_start ([$newvalue])
		1653
		1654	Returns the row number of the topmost displayed line. Maximum value is
		1655	C<0>, which displays the normal terminal contents. Lower values scroll
		1656	this many lines into the scrollback buffer.
		1657
		1658	=item $term->want_refresh
		1659
		1660	Requests a screen refresh. At the next opportunity, rxvt-unicode will
		1661	compare the on-screen display with its stored representation. If they
		1662	differ, it redraws the differences.
		1663
		1664	Used after changing terminal contents to display them.
		1665
		1666	=item $text = $term->ROW_t ($row_number[, $new_text[, $start_col]])
		1667
		1668	Returns the text of the entire row with number C<$row_number>. Row C<< $term->top_row >>
		1669	is the topmost terminal line, row C<< $term->nrow-1 >> is the bottommost
		1670	terminal line. Nothing will be returned if a nonexistent line
		1671	is requested.
		1672
		1673	If C<$new_text> is specified, it will replace characters in the current
		1674	line, starting at column C<$start_col> (default C<0>), which is useful
		1675	to replace only parts of a line. The font index in the rendition will
		1676	automatically be updated.
		1677
		1678	C<$text> is in a special encoding: tabs and wide characters that use more
		1679	than one cell when displayed are padded with C<$urxvt::NOCHAR> (chr 65535)
		1680	characters. Characters with combining characters and other characters that
		1681	do not fit into the normal text encoding will be replaced with characters
		1682	in the private use area.
		1683
		1684	You have to obey this encoding when changing text. The advantage is
		1685	that C<substr> and similar functions work on screen cells and not on
		1686	characters.
		1687
		1688	The methods C<< $term->special_encode >> and C<< $term->special_decode >>
		1689	can be used to convert normal strings into this encoding and vice versa.
		1690
		1691	=item $rend = $term->ROW_r ($row_number[, $new_rend[, $start_col]])
		1692
		1693	Like C<< $term->ROW_t >>, but returns an arrayref with rendition
		1694	bitsets. Rendition bitsets contain information about colour, font, font
		1695	styles and similar information. See also C<< $term->ROW_t >>.
		1696
		1697	When setting rendition, the font mask will be ignored.
		1698
		1699	See the section on RENDITION, above.
		1700
		1701	=item $length = $term->ROW_l ($row_number[, $new_length])
		1702
		1703	Returns the number of screen cells that are in use ("the line
		1704	length"). Unlike the urxvt core, this returns C<< $term->ncol >> if the
		1705	line is joined with the following one.
		1706
		1707	=item $bool = $term->is_longer ($row_number)
		1708
		1709	Returns true if the row is part of a multiple-row logical "line" (i.e.
		1710	joined with the following row), which means all characters are in use
		1711	and it is continued on the next row (and possibly a continuation of the
		1712	previous row(s)).
		1713
		1714	=item $line = $term->line ($row_number)
		1715
		1716	Create and return a new C<urxvt::line> object that stores information
		1717	about the logical line that row C<$row_number> is part of. It supports the
		1718	following methods:
		1719
		1720	=over 4
		1721
		1722	=item $text = $line->t ([$new_text])
		1723
		1724	Returns or replaces the full text of the line, similar to C<ROW_t>
		1725
		1726	=item $rend = $line->r ([$new_rend])
		1727
		1728	Returns or replaces the full rendition array of the line, similar to C<ROW_r>
		1729
		1730	=item $length = $line->l
		1731
		1732	Returns the length of the line in cells, similar to C<ROW_l>.
		1733
		1734	=item $rownum = $line->beg
		1735
		1736	=item $rownum = $line->end
		1737
		1738	Return the row number of the first/last row of the line, respectively.
		1739
		1740	=item $offset = $line->offset_of ($row, $col)
		1741
		1742	Returns the character offset of the given row|col pair within the logical
		1743	line. Works for rows outside the line, too, and returns corresponding
		1744	offsets outside the string.
		1745
		1746	=item ($row, $col) = $line->coord_of ($offset)
		1747
		1748	Translates a string offset into terminal coordinates again.
		1749
		1750	=back
		1751
		1752	=cut
		1753
		1754	sub line {
		1755	my ($self, $row) = @_;
		1756
		1757	my $maxrow = $self->nrow - 1;
		1758
		1759	my ($beg, $end) = ($row, $row);
		1760
		1761	--$beg while $self->ROW_is_longer ($beg - 1);
		1762	++$end while $self->ROW_is_longer ($end) && $end < $maxrow;
		1763
		1764	bless {
		1765	term => $self,
		1766	beg => $beg,
		1767	end => $end,
		1768	ncol => $self->ncol,
		1769	len => ($end - $beg) * $self->ncol + $self->ROW_l ($end),
		1770	}, urxvt::line::
		1771	}
		1772
		1773	sub urxvt::line::t {
209	my ($path) = @_;	1774	my ($self) = @_;
210		1775
211	$script_pkg{$path} ||= do {	1776	if (@_ > 1)
212	my $pkg = $script_pkg++;	1777	{
213	verbose 3, "loading script '$path' into package '$pkg'";	1778	$self->{term}->ROW_t ($_, $_[1], 0, ($_ - $self->{beg}) * $self->{ncol}, $self->{ncol})
		1779	for $self->{beg} .. $self->{end};
		1780	}
214		1781
215	open my $fh, "<:raw", $path	1782	defined wantarray &&
216	or die "$path: $!";	1783	substr +(join "", map $self->{term}->ROW_t ($_), $self->{beg} .. $self->{end}),
		1784	0, $self->{len}
		1785	}
217		1786
218	eval "package $pkg; use strict; use utf8;\n"	1787	sub urxvt::line::r {
219	. "#line 1 \"$path\"\n"	1788	my ($self) = @_;
220	. do { local $/; <$fh> }
221	or die "$path: $@";
222		1789
223	register_package $pkg;	1790	if (@_ > 1)
		1791	{
		1792	$self->{term}->ROW_r ($_, $_[1], 0, ($_ - $self->{beg}) * $self->{ncol}, $self->{ncol})
		1793	for $self->{beg} .. $self->{end};
		1794	}
224		1795
225	$pkg	1796	if (defined wantarray) {
		1797	my $rend = [
		1798	map @{ $self->{term}->ROW_r ($_) }, $self->{beg} .. $self->{end}
		1799	];
		1800	$#$rend = $self->{len} - 1;
		1801	return $rend;
		1802	}
		1803
		1804	()
		1805	}
		1806
		1807	sub urxvt::line::beg { $_[0]{beg} }
		1808	sub urxvt::line::end { $_[0]{end} }
		1809	sub urxvt::line::l { $_[0]{len} }
		1810
		1811	sub urxvt::line::offset_of {
		1812	my ($self, $row, $col) = @_;
		1813
		1814	($row - $self->{beg}) * $self->{ncol} + $col
		1815	}
		1816
		1817	sub urxvt::line::coord_of {
		1818	my ($self, $offset) = @_;
		1819
		1820	use integer;
		1821
		1822	(
		1823	$offset / $self->{ncol} + $self->{beg},
		1824	$offset % $self->{ncol}
		1825	)
		1826	}
		1827
		1828	=item $text = $term->special_encode $string
		1829
		1830	Converts a perl string into the special encoding used by rxvt-unicode,
		1831	where one character corresponds to one screen cell. See
		1832	C<< $term->ROW_t >> for details.
		1833
		1834	=item $string = $term->special_decode $text
		1835
		1836	Converts rxvt-unicodes text representation into a perl string. See
		1837	C<< $term->ROW_t >> for details.
		1838
		1839	=item $success = $term->grab_button ($button, $modifiermask[, $window = $term->vt])
		1840
		1841	=item $term->ungrab_button ($button, $modifiermask[, $window = $term->vt])
		1842
		1843	Register/unregister a synchronous button grab. See the XGrabButton
		1844	manpage.
		1845
		1846	=item $success = $term->grab ($eventtime[, $sync])
		1847
		1848	Calls XGrabPointer and XGrabKeyboard in asynchronous (default) or
		1849	synchronous (C<$sync> is true). Also remembers the grab timestamp.
		1850
		1851	=item $term->allow_events_async
		1852
		1853	Calls XAllowEvents with AsyncBoth for the most recent grab.
		1854
		1855	=item $term->allow_events_sync
		1856
		1857	Calls XAllowEvents with SyncBoth for the most recent grab.
		1858
		1859	=item $term->allow_events_replay
		1860
		1861	Calls XAllowEvents with both ReplayPointer and ReplayKeyboard for the most
		1862	recent grab.
		1863
		1864	=item $term->ungrab
		1865
		1866	Calls XUngrab for the most recent grab. Is called automatically on
		1867	evaluation errors, as it is better to lose the grab in the error case as
		1868	the session.
		1869
		1870	=item $atom = $term->XInternAtom ($atom_name[, $only_if_exists])
		1871
		1872	=item $atom_name = $term->XGetAtomName ($atom)
		1873
		1874	=item @atoms = $term->XListProperties ($window)
		1875
		1876	=item ($type,$format,$octets) = $term->XGetWindowProperty ($window, $property)
		1877
		1878	=item $term->XChangeProperty ($window, $property, $type, $format, $octets)
		1879
		1880	=item $term->XDeleteProperty ($window, $property)
		1881
		1882	=item $window = $term->DefaultRootWindow
		1883
		1884	=item $term->XReparentWindow ($window, $parent, [$x, $y])
		1885
		1886	=item $term->XMapWindow ($window)
		1887
		1888	=item $term->XUnmapWindow ($window)
		1889
		1890	=item $term->XMoveResizeWindow ($window, $x, $y, $width, $height)
		1891
		1892	=item ($x, $y, $child_window) = $term->XTranslateCoordinates ($src, $dst, $x, $y)
		1893
		1894	=item $term->XChangeInput ($window, $add_events[, $del_events])
		1895
		1896	Various X or X-related functions. The C<$term> object only serves as
		1897	the source of the display, otherwise those functions map more-or-less
		1898	directory onto the X functions of the same name.
		1899
		1900	=back
		1901
		1902	=cut
		1903
		1904	package urxvt::popup;
		1905
		1906	=head2 The C<urxvt::popup> Class
		1907
		1908	=over 4
		1909
		1910	=cut
		1911
		1912	sub add_item {
		1913	my ($self, $item) = @_;
		1914
		1915	$item->{rend}{normal} = "\x1b[0;30;47m" unless exists $item->{rend}{normal};
		1916	$item->{rend}{hover} = "\x1b[0;30;46m" unless exists $item->{rend}{hover};
		1917	$item->{rend}{active} = "\x1b[m" unless exists $item->{rend}{active};
		1918
		1919	$item->{render} ||= sub { $_[0]{text} };
		1920
		1921	push @{ $self->{item} }, $item;
		1922	}
		1923
		1924	=item $popup->add_title ($title)
		1925
		1926	Adds a non-clickable title to the popup.
		1927
		1928	=cut
		1929
		1930	sub add_title {
		1931	my ($self, $title) = @_;
		1932
		1933	$self->add_item ({
		1934	rend => { normal => "\x1b[38;5;11;44m", hover => "\x1b[38;5;11;44m", active => "\x1b[38;5;11;44m" },
		1935	text => $title,
		1936	activate => sub { },
		1937	});
		1938	}
		1939
		1940	=item $popup->add_separator ([$sepchr])
		1941
		1942	Creates a separator, optionally using the character given as C<$sepchr>.
		1943
		1944	=cut
		1945
		1946	sub add_separator {
		1947	my ($self, $sep) = @_;
		1948
		1949	$sep ||= "=";
		1950
		1951	$self->add_item ({
		1952	rend => { normal => "\x1b[0;30;47m", hover => "\x1b[0;30;47m", active => "\x1b[0;30;47m" },
		1953	text => "",
		1954	render => sub { $sep x $self->{term}->ncol },
		1955	activate => sub { },
		1956	});
		1957	}
		1958
		1959	=item $popup->add_button ($text, $cb)
		1960
		1961	Adds a clickable button to the popup. C<$cb> is called whenever it is
		1962	selected.
		1963
		1964	=cut
		1965
		1966	sub add_button {
		1967	my ($self, $text, $cb) = @_;
		1968
		1969	$self->add_item ({ type => "button", text => $text, activate => $cb});
		1970	}
		1971
		1972	=item $popup->add_toggle ($text, $initial_value, $cb)
		1973
		1974	Adds a toggle/checkbox item to the popup. The callback gets called
		1975	whenever it gets toggled, with a boolean indicating its new value as its
		1976	first argument.
		1977
		1978	=cut
		1979
		1980	sub add_toggle {
		1981	my ($self, $text, $value, $cb) = @_;
		1982
		1983	my $item; $item = {
		1984	type => "button",
		1985	text => " $text",
		1986	value => $value,
		1987	render => sub { ($_[0]{value} ? "* " : " ") . $text },
		1988	activate => sub { $cb->($_[1]{value} = !$_[1]{value}); },
226	};	1989	};
227	}
228		1990
229	load_script $_ for grep -f $_, <$LIBDIR/perl-ext/*>;	1991	$self->add_item ($item);
		1992	}
230		1993
		1994	=item $popup->show
		1995
		1996	Displays the popup (which is initially hidden).
		1997
		1998	=cut
		1999
		2000	sub show {
		2001	my ($self) = @_;
		2002
		2003	local $urxvt::popup::self = $self;
		2004
		2005	my $env = $self->{term}->env;
		2006	# we can't hope to reproduce the locale algorithm, so nuke LC_ALL and set LC_CTYPE.
		2007	delete $env->{LC_ALL};
		2008	$env->{LC_CTYPE} = $self->{term}->locale;
		2009
		2010	my $term = urxvt::term->new (
		2011	$env, "popup",
		2012	"--perl-lib" => "", "--perl-ext-common" => "",
		2013	"-pty-fd" => -1, "-sl" => 0,
		2014	"-b" => 1, "-bd" => "grey80", "-bl", "-override-redirect",
		2015	"--transient-for" => $self->{term}->parent,
		2016	"-display" => $self->{term}->display_id,
		2017	"-pe" => "urxvt-popup",
		2018	) or die "unable to create popup window\n";
		2019
		2020	unless (delete $term->{urxvt_popup_init_done}) {
		2021	$term->ungrab;
		2022	$term->destroy;
		2023	die "unable to initialise popup window\n";
		2024	}
		2025	}
		2026
		2027	sub DESTROY {
		2028	my ($self) = @_;
		2029
		2030	delete $self->{term}{_destroy}{$self};
		2031	$self->{term}->ungrab;
		2032	}
231		2033
232	=back	2034	=back
233		2035
234	=head2 The C<urxvt::term> Class
235
236	=over 4
237
238	=item ($row, $col) = $term->selection_mark ([$row, $col])
239
240	=item ($row, $col) = $term->selection_beg ([$row, $col])
241
242	=item ($row, $col) = $term->selection_end ([$row, $col])
243
244	Return the current values of the selection mark, begin or end positions,
245	and optionally set them to new values.
246
247	=item $success = $term->selection_grab ($eventtime)
248
249	Try to request the primary selection from the server (for example, as set
250	by the next method).
251
252	=item $oldtext = $term->selection ([$newtext])
253
254	Return the current selection text and optionally replace it by C<$newtext>.
255
256	=item $term->scr_overlay ($x, $y, $text)
257
258	Create a simple multi-line overlay box. See the next method for details.
259
260	=cut	2036	=cut
261		2037
262	sub urxvt::term::scr_overlay {	2038	package urxvt::watcher;
263	my ($self, $x, $y, $text) = @_;
264
265	my @lines = split /\n/, $text;
266
267	my $w = 0;
268	for (map urxvt::wcswidth $_, @lines) {
269	$w = $_ if $w < $_;
270	}
271
272	$self->scr_overlay_new ($x, $y, $w, scalar @lines);
273	$self->scr_overlay_set (0, $_, $lines[$_]) for 0.. $#lines;
274	}
275
276	=item $term->scr_overlay_new ($x, $y, $width, $height)
277
278	Create a new (empty) overlay at the given position with the given
279	width/height. A border will be put around the box. If either C<$x> or
280	C<$y> is negative, then this is counted from the right/bottom side,
281	respectively.
282
283	=item $term->scr_overlay_off
284
285	Switch the overlay off again.
286
287	=item $term->scr_overlay_set_char ($x, $y, $char, $rend = OVERLAY_RSTYLE)
288
289	Put a single character (specified numerically) at the given overlay
290	position.
291
292	=item $term->scr_overlay_set ($x, $y, $text)
293
294	Write a string at the given position into the overlay.
295
296	=back
297		2039
298	=head2 The C<urxvt::timer> Class	2040	=head2 The C<urxvt::timer> Class
299		2041
300	This class implements timer watchers/events. Time is represented as a	2042	This class implements timer watchers/events. Time is represented as a
301	fractional number of seconds since the epoch. Example:	2043	fractional number of seconds since the epoch. Example:
302		2044
303	# create a digital clock display in upper right corner	2045	$term->{overlay} = $term->overlay (-1, 0, 8, 1, urxvt::OVERLAY_RSTYLE, 0);
304	$term->{timer} = urxvt::timer	2046	$term->{timer} = urxvt::timer
305	->new	2047	->new
306	->start (urxvt::NOW)	2048	->interval (1)
307	->cb (sub {	2049	->cb (sub {
308	my ($timer) = @_;
309	my $time = $timer->at;
310	$timer->start ($time + 1);
311	$self->scr_overlay (-1, 0,	2050	$term->{overlay}->set (0, 0,
312	POSIX::strftime "%H:%M:%S", localtime $time);	2051	sprintf "%2d:%02d:%02d", (localtime urxvt::NOW)[2,1,0]);
313	});	2052	});
314		2053
315	=over 4	2054	=over 4
316		2055
317	=item $timer = new urxvt::timer	2056	=item $timer = new urxvt::timer
318		2057
319	Create a new timer object in stopped state.	2058	Create a new timer object in started state. It is scheduled to fire
		2059	immediately.
320		2060
321	=item $timer = $timer->cb (sub { my ($timer) = @_; ... })	2061	=item $timer = $timer->cb (sub { my ($timer) = @_; ... })
322		2062
323	Set the callback to be called when the timer triggers.	2063	Set the callback to be called when the timer triggers.
324		2064
325	=item $tstamp = $timer->at
326
327	Return the time this watcher will fire next.
328
329	=item $timer = $timer->set ($tstamp)	2065	=item $timer = $timer->set ($tstamp[, $interval])
330		2066
331	Set the time the event is generated to $tstamp.	2067	Set the time the event is generated to $tstamp (and optionally specifies a
		2068	new $interval).
		2069
		2070	=item $timer = $timer->interval ($interval)
		2071
		2072	By default (and when C<$interval> is C<0>), the timer will automatically
		2073	stop after it has fired once. If C<$interval> is non-zero, then the timer
		2074	is automatically rescheduled at the given intervals.
332		2075
333	=item $timer = $timer->start	2076	=item $timer = $timer->start
334		2077
335	Start the timer.	2078	Start the timer.
336		2079
337	=item $timer = $timer->start ($tstamp)	2080	=item $timer = $timer->start ($tstamp[, $interval])
338		2081
339	Set the event trigger time to C<$tstamp> and start the timer.	2082	Set the event trigger time to C<$tstamp> and start the timer. Optionally
		2083	also replaces the interval.
		2084
		2085	=item $timer = $timer->after ($delay[, $interval])
		2086
		2087	Like C<start>, but sets the expiry timer to c<urxvt::NOW + $delay>.
340		2088
341	=item $timer = $timer->stop	2089	=item $timer = $timer->stop
342		2090
343	Stop the timer.	2091	Stop the timer.
344		2092
…		…
350		2098
351	$term->{socket} = ...	2099	$term->{socket} = ...
352	$term->{iow} = urxvt::iow	2100	$term->{iow} = urxvt::iow
353	->new	2101	->new
354	->fd (fileno $term->{socket})	2102	->fd (fileno $term->{socket})
355	->events (1) # wait for read data	2103	->events (urxvt::EV_READ)
356	->start	2104	->start
357	->cb (sub {	2105	->cb (sub {
358	my ($iow, $revents) = @_;	2106	my ($iow, $revents) = @_;
359	# $revents must be 1 here, no need to check	2107	# $revents must be 1 here, no need to check
360	sysread $term->{socket}, my $buf, 8192	2108	sysread $term->{socket}, my $buf, 8192
…		…
373	Set the callback to be called when io events are triggered. C<$reventmask>	2121	Set the callback to be called when io events are triggered. C<$reventmask>
374	is a bitset as described in the C<events> method.	2122	is a bitset as described in the C<events> method.
375		2123
376	=item $iow = $iow->fd ($fd)	2124	=item $iow = $iow->fd ($fd)
377		2125
378	Set the filedescriptor (not handle) to watch.	2126	Set the file descriptor (not handle) to watch.
379		2127
380	=item $iow = $iow->events ($eventmask)	2128	=item $iow = $iow->events ($eventmask)
381		2129
382	Set the event mask to watch. Bit #0 (value C<1>) enables watching for read	2130	Set the event mask to watch. The only allowed values are
383	data, Bit #1 (value C<2>) enables watching for write data.	2131	C<urxvt::EV_READ> and C<urxvt::EV_WRITE>, which might be ORed
		2132	together, or C<urxvt::EV_NONE>.
384		2133
385	=item $iow = $iow->start	2134	=item $iow = $iow->start
386		2135
387	Start watching for requested events on the given handle.	2136	Start watching for requested events on the given handle.
388		2137
389	=item $iow = $iow->stop	2138	=item $iow = $iow->stop
390		2139
391	Stop watching for events on the given filehandle.	2140	Stop watching for events on the given file handle.
		2141
		2142	=back
		2143
		2144	=head2 The C<urxvt::iw> Class
		2145
		2146	This class implements idle watchers, that get called automatically when
		2147	the process is idle. They should return as fast as possible, after doing
		2148	some useful work.
		2149
		2150	=over 4
		2151
		2152	=item $iw = new urxvt::iw
		2153
		2154	Create a new idle watcher object in stopped state.
		2155
		2156	=item $iw = $iw->cb (sub { my ($iw) = @_; ... })
		2157
		2158	Set the callback to be called when the watcher triggers.
		2159
		2160	=item $timer = $timer->start
		2161
		2162	Start the watcher.
		2163
		2164	=item $timer = $timer->stop
		2165
		2166	Stop the watcher.
		2167
		2168	=back
		2169
		2170	=head2 The C<urxvt::pw> Class
		2171
		2172	This class implements process watchers. They create an event whenever a
		2173	process exits, after which they stop automatically.
		2174
		2175	my $pid = fork;
		2176	...
		2177	$term->{pw} = urxvt::pw
		2178	->new
		2179	->start ($pid)
		2180	->cb (sub {
		2181	my ($pw, $exit_status) = @_;
		2182	...
		2183	});
		2184
		2185	=over 4
		2186
		2187	=item $pw = new urxvt::pw
		2188
		2189	Create a new process watcher in stopped state.
		2190
		2191	=item $pw = $pw->cb (sub { my ($pw, $exit_status) = @_; ... })
		2192
		2193	Set the callback to be called when the timer triggers.
		2194
		2195	=item $pw = $timer->start ($pid)
		2196
		2197	Tells the watcher to start watching for process C<$pid>.
		2198
		2199	=item $pw = $pw->stop
		2200
		2201	Stop the watcher.
		2202
		2203	=back
		2204
		2205	=head1 ENVIRONMENT
		2206
		2207	=head2 URXVT_PERL_VERBOSITY
		2208
		2209	This variable controls the verbosity level of the perl extension. Higher
		2210	numbers indicate more verbose output.
		2211
		2212	=over 4
		2213
		2214	=item == 0 - fatal messages
		2215
		2216	=item >= 3 - script loading and management
		2217
		2218	=item >=10 - all called hooks
		2219
		2220	=item >=11 - hook return values
392		2221
393	=back	2222	=back
394		2223
395	=head1 AUTHOR	2224	=head1 AUTHOR
396		2225
…		…
398	http://software.schmorp.de/pkg/rxvt-unicode	2227	http://software.schmorp.de/pkg/rxvt-unicode
399		2228
400	=cut	2229	=cut
401		2230
402	1	2231	1
		2232
		2233	# vim: sw=3:

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