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Revision 1.8 by root, Mon Jan 2 20:35:39 2006 UTC vs.
Revision 1.189 by root, Sat Dec 18 15:37:10 2010 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	Everytime a terminal object gets created, scripts specified via the	22	Every time a terminal object gets created, extension scripts specified via
22	C<perl> resource are associated with it.	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.
23		27
24	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
25	scripts will be shared (But not enabled) for all terminals.	29	scripts will be shared (but not enabled) for all terminals.
		30
		31	You can disable the embedded perl interpreter by setting both "perl-ext"
		32	and "perl-ext-common" resources to the empty string.
		33
		34	=head1 PREPACKAGED EXTENSIONS
		35
		36	This section describes the extensions delivered with this release. You can
		37	find them in F<@@RXVT_LIBDIR@@/urxvt/perl/>.
		38
		39	You can activate them like this:
		40
		41	@@RXVT_NAME@@ -pe <extensionname>
		42
		43	Or by adding them to the resource for extensions loaded by default:
		44
		45	URxvt.perl-ext-common: default,selection-autotransform
		46
		47	=over 4
		48
		49	=item selection (enabled by default)
		50
		51	(More) intelligent selection. This extension tries to be more intelligent
		52	when the user extends selections (double-click and further clicks). Right
		53	now, it tries to select words, urls and complete shell-quoted
		54	arguments, which is very convenient, too, if your F<ls> supports
		55	C<--quoting-style=shell>.
		56
		57	A double-click usually selects the word under the cursor, further clicks
		58	will enlarge the selection.
		59
		60	The selection works by trying to match a number of regexes and displaying
		61	them in increasing order of length. You can add your own regexes by
		62	specifying resources of the form:
		63
		64	URxvt.selection.pattern-0: perl-regex
		65	URxvt.selection.pattern-1: perl-regex
		66	...
		67
		68	The index number (0, 1...) must not have any holes, and each regex must
		69	contain at least one pair of capturing parentheses, which will be used for
		70	the match. For example, the following adds a regex that matches everything
		71	between two vertical bars:
		72
		73	URxvt.selection.pattern-0: \\|([^|]+)\\|
		74
		75	Another example: Programs I use often output "absolute path: " at the
		76	beginning of a line when they process multiple files. The following
		77	pattern matches the filename (note, there is a single space at the very
		78	end):
		79
		80	URxvt.selection.pattern-0: ^(/[^:]+):\
		81
		82	You can look at the source of the selection extension to see more
		83	interesting uses, such as parsing a line from beginning to end.
		84
		85	This extension also offers following bindable keyboard commands:
		86
		87	=over 4
		88
		89	=item rot13
		90
		91	Rot-13 the selection when activated. Used via keyboard trigger:
		92
		93	URxvt.keysym.C-M-r: perl:selection:rot13
		94
		95	=back
		96
		97	=item option-popup (enabled by default)
		98
		99	Binds a popup menu to Ctrl-Button2 that lets you toggle (some) options at
		100	runtime.
		101
		102	Other extensions can extend this popup menu by pushing a code reference
		103	onto C<@{ $term->{option_popup_hook} }>, which gets called whenever the
		104	popup is being displayed.
		105
		106	Its sole argument is the popup menu, which can be modified. It should
		107	either return nothing or a string, the initial boolean value and a code
		108	reference. The string will be used as button text and the code reference
		109	will be called when the toggle changes, with the new boolean value as
		110	first argument.
		111
		112	The following will add an entry C<myoption> that changes
		113	C<< $self->{myoption} >>:
		114
		115	push @{ $self->{term}{option_popup_hook} }, sub {
		116	("my option" => $myoption, sub { $self->{myoption} = $_[0] })
		117	};
		118
		119	=item selection-popup (enabled by default)
		120
		121	Binds a popup menu to Ctrl-Button3 that lets you convert the selection
		122	text into various other formats/action (such as uri unescaping, perl
		123	evaluation, web-browser starting etc.), depending on content.
		124
		125	Other extensions can extend this popup menu by pushing a code reference
		126	onto C<@{ $term->{selection_popup_hook} }>, which gets called whenever the
		127	popup is being displayed.
		128
		129	Its sole argument is the popup menu, which can be modified. The selection
		130	is in C<$_>, which can be used to decide whether to add something or not.
		131	It should either return nothing or a string and a code reference. The
		132	string will be used as button text and the code reference will be called
		133	when the button gets activated and should transform C<$_>.
		134
		135	The following will add an entry C<a to b> that transforms all C<a>s in
		136	the selection to C<b>s, but only if the selection currently contains any
		137	C<a>s:
		138
		139	push @{ $self->{term}{selection_popup_hook} }, sub {
		140	/a/ ? ("a to b" => sub { s/a/b/g }
		141	: ()
		142	};
		143
		144	=item searchable-scrollback<hotkey> (enabled by default)
		145
		146	Adds regex search functionality to the scrollback buffer, triggered
		147	by a hotkey (default: C<M-s>). While in search mode, normal terminal
		148	input/output is suspended and a regex is displayed at the bottom of the
		149	screen.
		150
		151	Inputting characters appends them to the regex and continues incremental
		152	search. C<BackSpace> removes a character from the regex, C<Up> and C<Down>
		153	search upwards/downwards in the scrollback buffer, C<End> jumps to the
		154	bottom. C<Escape> leaves search mode and returns to the point where search
		155	was started, while C<Enter> or C<Return> stay at the current position and
		156	additionally stores the first match in the current line into the primary
		157	selection if the C<Shift> modifier is active.
		158
		159	The regex defaults to "(?i)", resulting in a case-insensitive search. To
		160	get a case-sensitive search you can delete this prefix using C<BackSpace>
		161	or simply use an uppercase character which removes the "(?i)" prefix.
		162
		163	See L<perlre> for more info about perl regular expression syntax.
		164
		165	=item readline (enabled by default)
		166
		167	A support package that tries to make editing with readline easier. At
		168	the moment, it reacts to clicking shift-left mouse button by trying to
		169	move the text cursor to this position. It does so by generating as many
		170	cursor-left or cursor-right keypresses as required (this only works
		171	for programs that correctly support wide characters).
		172
		173	To avoid too many false positives, this is only done when:
		174
		175	=over 4
		176
		177	=item - the tty is in ICANON state.
		178
		179	=item - the text cursor is visible.
		180
		181	=item - the primary screen is currently being displayed.
		182
		183	=item - the mouse is on the same (multi-row-) line as the text cursor.
		184
		185	=back
		186
		187	The normal selection mechanism isn't disabled, so quick successive clicks
		188	might interfere with selection creation in harmless ways.
		189
		190	=item selection-autotransform
		191
		192	This selection allows you to do automatic transforms on a selection
		193	whenever a selection is made.
		194
		195	It works by specifying perl snippets (most useful is a single C<s///>
		196	operator) that modify C<$_> as resources:
		197
		198	URxvt.selection-autotransform.0: transform
		199	URxvt.selection-autotransform.1: transform
		200	...
		201
		202	For example, the following will transform selections of the form
		203	C<filename:number>, often seen in compiler messages, into C<vi +$filename
		204	$word>:
		205
		206	URxvt.selection-autotransform.0: s/^([^:[:space:]]+):(\\d+):?$/vi +$2 \\Q$1\\E\\x0d/
		207
		208	And this example matches the same,but replaces it with vi-commands you can
		209	paste directly into your (vi :) editor:
		210
		211	URxvt.selection-autotransform.0: s/^([^:[:space:]]+(\\d+):?$/:e \\Q$1\\E\\x0d:$2\\x0d/
		212
		213	Of course, this can be modified to suit your needs and your editor :)
		214
		215	To expand the example above to typical perl error messages ("XXX at
		216	FILENAME line YYY."), you need a slightly more elaborate solution:
		217
		218	URxvt.selection.pattern-0: ( at .*? line \\d+[,.])
		219	URxvt.selection-autotransform.0: s/^ at (.*?) line (\\d+)[,.]$/:e \\Q$1\E\\x0d:$2\\x0d/
		220
		221	The first line tells the selection code to treat the unchanging part of
		222	every error message as a selection pattern, and the second line transforms
		223	the message into vi commands to load the file.
		224
		225	=item tabbed
		226
		227	This transforms the terminal into a tabbar with additional terminals, that
		228	is, it implements what is commonly referred to as "tabbed terminal". The topmost line
		229	displays a "[NEW]" button, which, when clicked, will add a new tab, followed by one
		230	button per tab.
		231
		232	Clicking a button will activate that tab. Pressing B<Shift-Left> and
		233	B<Shift-Right> will switch to the tab left or right of the current one,
		234	while B<Shift-Down> creates a new tab.
		235
		236	The tabbar itself can be configured similarly to a normal terminal, but
		237	with a resource class of C<URxvt.tabbed>. In addition, it supports the
		238	following four resources (shown with defaults):
		239
		240	URxvt.tabbed.tabbar-fg: <colour-index, default 3>
		241	URxvt.tabbed.tabbar-bg: <colour-index, default 0>
		242	URxvt.tabbed.tab-fg: <colour-index, default 0>
		243	URxvt.tabbed.tab-bg: <colour-index, default 1>
		244
		245	See I<COLOR AND GRAPHICS> in the @@RXVT_NAME@@(1) manpage for valid
		246	indices.
		247
		248	=item matcher
		249
		250	Uses per-line display filtering (C<on_line_update>) to underline text
		251	matching a certain pattern and make it clickable. When clicked with the
		252	mouse button specified in the C<matcher.button> resource (default 2, or
		253	middle), the program specified in the C<matcher.launcher> resource
		254	(default, the C<urlLauncher> resource, C<sensible-browser>) will be started
		255	with the matched text as first argument. The default configuration is
		256	suitable for matching URLs and launching a web browser, like the
		257	former "mark-urls" extension.
		258
		259	The default pattern to match URLs can be overridden with the
		260	C<matcher.pattern.0> resource, and additional patterns can be specified
		261	with numbered patterns, in a manner similar to the "selection" extension.
		262	The launcher can also be overridden on a per-pattern basis.
		263
		264	It is possible to activate the most recently seen match from the keyboard.
		265	Simply bind a keysym to "perl:matcher" as seen in the example below.
		266
		267	Example configuration:
		268
		269	URxvt.perl-ext: default,matcher
		270	URxvt.urlLauncher: sensible-browser
		271	URxvt.keysym.C-Delete: perl:matcher
		272	URxvt.matcher.button: 1
		273	URxvt.matcher.pattern.1: \\bwww\\.[\\w-]+\\.[\\w./?&@#-]*[\\w/-]
		274	URxvt.matcher.pattern.2: \\B(/\\S+?):(\\d+)(?=:|$)
		275	URxvt.matcher.launcher.2: gvim +$2 $1
		276
		277	=item xim-onthespot
		278
		279	This (experimental) perl extension implements OnTheSpot editing. It does
		280	not work perfectly, and some input methods don't seem to work well with
		281	OnTheSpot editing in general, but it seems to work at least for SCIM and
		282	kinput2.
		283
		284	You enable it by specifying this extension and a preedit style of
		285	C<OnTheSpot>, i.e.:
		286
		287	@@RXVT_NAME@@ -pt OnTheSpot -pe xim-onthespot
		288
		289	=item kuake<hotkey>
		290
		291	A very primitive quake-console-like extension. It was inspired by a
		292	description of how the programs C<kuake> and C<yakuake> work: Whenever the
		293	user presses a global accelerator key (by default C<F10>), the terminal
		294	will show or hide itself. Another press of the accelerator key will hide
		295	or show it again.
		296
		297	Initially, the window will not be shown when using this extension.
		298
		299	This is useful if you need a single terminal that is not using any desktop
		300	space most of the time but is quickly available at the press of a key.
		301
		302	The accelerator key is grabbed regardless of any modifiers, so this
		303	extension will actually grab a physical key just for this function.
		304
		305	If you want a quake-like animation, tell your window manager to do so
		306	(fvwm can do it).
		307
		308	=item 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 whether xrdb is used to parse the resource file
		376	or not.
		377
		378	=item macosx-clipboard and macosx-clipboard-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<macosx-clipboard> 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	=item confirm-paste
		399
		400	Displays a confirmation dialog when a paste containing at least a full
		401	line is detected.
		402
		403	=back
		404
		405	=head1 API DOCUMENTATION
26		406
27	=head2 General API Considerations	407	=head2 General API Considerations
28		408
29	All objects (such as terminals, time watchers etc.) are typical	409	All objects (such as terminals, time watchers etc.) are typical
30	reference-to-hash objects. The hash can be used to store anything you	410	reference-to-hash objects. The hash can be used to store anything you
31	like. All members starting with an underscore (such as C<_ptr> or	411	like. All members starting with an underscore (such as C<_ptr> or
32	C<_hook>) are reserved for internal uses and must not be accessed or	412	C<_hook>) are reserved for internal uses and B<MUST NOT> be accessed or
33	modified).	413	modified).
34		414
35	When objects are destroyed on the C++ side, the perl object hashes are	415	When objects are destroyed on the C++ side, the perl object hashes are
36	emptied, so its best to store related objects such as time watchers and	416	emptied, so its best to store related objects such as time watchers and
37	the like inside the terminal object so they get destroyed as soon as the	417	the like inside the terminal object so they get destroyed as soon as the
38	terminal is destroyed.	418	terminal is destroyed.
39		419
		420	Argument names also often indicate the type of a parameter. Here are some
		421	hints on what they mean:
		422
		423	=over 4
		424
		425	=item $text
		426
		427	Rxvt-unicode's special way of encoding text, where one "unicode" character
		428	always represents one screen cell. See L<ROW_t> for a discussion of this format.
		429
		430	=item $string
		431
		432	A perl text string, with an emphasis on I<text>. It can store all unicode
		433	characters and is to be distinguished with text encoded in a specific
		434	encoding (often locale-specific) and binary data.
		435
		436	=item $octets
		437
		438	Either binary data or - more common - a text string encoded in a
		439	locale-specific way.
		440
		441	=back
		442
		443	=head2 Extension Objects
		444
		445	Every perl extension is a perl class. A separate perl object is created
		446	for each terminal, and each terminal has its own set of extenion objects,
		447	which are passed as the first parameter to hooks. So extensions can use
		448	their C<$self> object without having to think about clashes with other
		449	extensions or other terminals, with the exception of methods and members
		450	that begin with an underscore character C<_>: these are reserved for
		451	internal use.
		452
		453	Although it isn't a C<urxvt::term> object, you can call all methods of the
		454	C<urxvt::term> class on this object.
		455
		456	It has the following methods and data members:
		457
		458	=over 4
		459
		460	=item $urxvt_term = $self->{term}
		461
		462	Returns the C<urxvt::term> object associated with this instance of the
		463	extension. This member I<must not> be changed in any way.
		464
		465	=item $self->enable ($hook_name => $cb, [$hook_name => $cb..])
		466
		467	Dynamically enable the given hooks (named without the C<on_> prefix) for
		468	this extension, replacing any previous hook. This is useful when you want
		469	to overwrite time-critical hooks only temporarily.
		470
		471	=item $self->disable ($hook_name[, $hook_name..])
		472
		473	Dynamically disable the given hooks.
		474
		475	=back
		476
40	=head2 Hooks	477	=head2 Hooks
41		478
42	The following subroutines can be declared in loaded scripts, and will be called	479	The following subroutines can be declared in extension files, and will be
43	whenever the relevant event happens.	480	called whenever the relevant event happens.
44		481
45	All of them must return a boolean value. If it is true, then the event	482	The first argument passed to them is an extension object as described in
46	counts as being I<consumed>, and the invocation of other hooks is skipped,	483	the in the C<Extension Objects> section.
		484
		485	B<All> of these hooks must return a boolean value. If any of the called
		486	hooks returns true, then the event counts as being I<consumed>, and the
47	and the relevant action might not be carried out by the C++ code.	487	relevant action might not be carried out by the C++ code.
48		488
49	When in doubt, return a false value (preferably C<()>).	489	I<< When in doubt, return a false value (preferably C<()>). >>
50		490
51	=over 4	491	=over 4
52		492
53	=item on_init $term	493	=item on_init $term
54		494
55	Called after a new terminal object has been initialized, but before	495	Called after a new terminal object has been initialized, but before
56	windows are created or the command gets run.	496	windows are created or the command gets run. Most methods are unsafe to
		497	call or deliver senseless data, as terminal size and other characteristics
		498	have not yet been determined. You can safely query and change resources
		499	and options, though. For many purposes the C<on_start> hook is a better
		500	place.
		501
		502	=item on_start $term
		503
		504	Called at the very end of initialisation of a new terminal, just before
		505	trying to map (display) the toplevel and returning to the main loop.
		506
		507	=item on_destroy $term
		508
		509	Called whenever something tries to destroy terminal, when the terminal is
		510	still fully functional (not for long, though).
57		511
58	=item on_reset $term	512	=item on_reset $term
59		513
60	Called after the screen is "reset" for any reason, such as resizing or	514	Called after the screen is "reset" for any reason, such as resizing or
61	control sequences. Here is where you can react on changes to size-related	515	control sequences. Here is where you can react on changes to size-related
62	variables.	516	variables.
63		517
64	=item on_start $term	518	=item on_child_start $term, $pid
65		519
66	Called at the very end of initialisation of a new terminal, just before	520	Called just after the child process has been C<fork>ed.
67	returning to the mainloop.	521
		522	=item on_child_exit $term, $status
		523
		524	Called just after the child process has exited. C<$status> is the status
		525	from C<waitpid>.
68		526
69	=item on_sel_make $term, $eventtime	527	=item on_sel_make $term, $eventtime
70		528
71	Called whenever a selection has been made by the user, but before the	529	Called whenever a selection has been made by the user, but before the
72	selection text is copied, so changes to the beginning, end or type of the	530	selection text is copied, so changes to the beginning, end or type of the
…		…
79		537
80	Called whenever a selection has been copied, but before the selection is	538	Called whenever a selection has been copied, but before the selection is
81	requested from the server. The selection text can be queried and changed	539	requested from the server. The selection text can be queried and changed
82	by calling C<< $term->selection >>.	540	by calling C<< $term->selection >>.
83		541
84	Returning a true value aborts selection grabbing. It will still be hilighted.	542	Returning a true value aborts selection grabbing. It will still be highlighted.
85		543
86	=item on_focus_in $term	544	=item on_sel_extend $term
87		545
88	Called whenever the window gets the keyboard focus, before urxvt does	546	Called whenever the user tries to extend the selection (e.g. with a double
89	focus in processing.	547	click) and is either supposed to return false (normal operation), or
		548	should extend the selection itself and return true to suppress the built-in
		549	processing. This can happen multiple times, as long as the callback
		550	returns true, it will be called on every further click by the user and is
		551	supposed to enlarge the selection more and more, if possible.
90		552
91	=item on_focus_out $term	553	See the F<selection> example extension.
92
93	Called wheneever the window loses keyboard focus, before urxvt does focus
94	out processing.
95		554
96	=item on_view_change $term, $offset	555	=item on_view_change $term, $offset
97		556
98	Called whenever the view offset changes, i..e the user or program	557	Called whenever the view offset changes, i.e. the user or program
99	scrolls. Offset C<0> means display the normal terminal, positive values	558	scrolls. Offset C<0> means display the normal terminal, positive values
100	show this many lines of scrollback.	559	show this many lines of scrollback.
101		560
102	=item on_scroll_back $term, $lines, $saved	561	=item on_scroll_back $term, $lines, $saved
103		562
…		…
107		566
108	It is called before lines are scrolled out (so rows 0 .. min ($lines - 1,	567	It is called before lines are scrolled out (so rows 0 .. min ($lines - 1,
109	$nrow - 1) represent the lines to be scrolled out). C<$saved> is the total	568	$nrow - 1) represent the lines to be scrolled out). C<$saved> is the total
110	number of lines that will be in the scrollback buffer.	569	number of lines that will be in the scrollback buffer.
111		570
112	=item on_tty_activity $term *NYI*	571	=item on_osc_seq $term, $op, $args, $resp
113		572
114	Called whenever the program(s) running in the urxvt window send output.	573	Called on every OSC sequence and can be used to suppress it or modify its
		574	behaviour. The default should be to return an empty list. A true value
		575	suppresses execution of the request completely. Make sure you don't get
		576	confused by recursive invocations when you output an OSC sequence within
		577	this callback.
		578
		579	C<on_osc_seq_perl> should be used for new behaviour.
		580
		581	=item on_osc_seq_perl $term, $args, $resp
		582
		583	Called whenever the B<ESC ] 777 ; string ST> command sequence (OSC =
		584	operating system command) is processed. Cursor position and other state
		585	information is up-to-date when this happens. For interoperability, the
		586	string should start with the extension name (sans -osc) and a semicolon,
		587	to distinguish it from commands for other extensions, and this might be
		588	enforced in the future.
		589
		590	For example, C<overlay-osc> uses this:
		591
		592	sub on_osc_seq_perl {
		593	my ($self, $osc, $resp) = @_;
		594
		595	return unless $osc =~ s/^overlay;//;
		596
		597	... process remaining $osc string
		598	}
		599
		600	Be careful not ever to trust (in a security sense) the data you receive,
		601	as its source can not easily be controlled (e-mail content, messages from
		602	other users on the same system etc.).
		603
		604	For responses, C<$resp> contains the end-of-args separator used by the
		605	sender.
		606
		607	=item on_add_lines $term, $string
		608
		609	Called whenever text is about to be output, with the text as argument. You
		610	can filter/change and output the text yourself by returning a true value
		611	and calling C<< $term->scr_add_lines >> yourself. Please note that this
		612	might be very slow, however, as your hook is called for B<all> text being
		613	output.
		614
		615	=item on_tt_write $term, $octets
		616
		617	Called whenever some data is written to the tty/pty and can be used to
		618	suppress or filter tty input.
		619
		620	=item on_tt_paste $term, $octets
		621
		622	Called whenever text is about to be pasted, with the text as argument. You
		623	can filter/change and paste the text yourself by returning a true value
		624	and calling C<< $term->tt_paste >> yourself. C<$octets> is
		625	locale-encoded.
		626
		627	=item on_line_update $term, $row
		628
		629	Called whenever a line was updated or changed. Can be used to filter
		630	screen output (e.g. underline urls or other useless stuff). Only lines
		631	that are being shown will be filtered, and, due to performance reasons,
		632	not always immediately.
		633
		634	The row number is always the topmost row of the line if the line spans
		635	multiple rows.
		636
		637	Please note that, if you change the line, then the hook might get called
		638	later with the already-modified line (e.g. if unrelated parts change), so
		639	you cannot just toggle rendition bits, but only set them.
115		640
116	=item on_refresh_begin $term	641	=item on_refresh_begin $term
117		642
118	Called just before the screen gets redrawn. Can be used for overlay	643	Called just before the screen gets redrawn. Can be used for overlay or
119	or similar effects by modify terminal contents in refresh_begin, and	644	similar effects by modifying the terminal contents in refresh_begin, and
120	restoring them in refresh_end. The built-in overlay and selection display	645	restoring them in refresh_end. The built-in overlay and selection display
121	code is run after this hook, and takes precedence.	646	code is run after this hook, and takes precedence.
122		647
123	=item on_refresh_end $term	648	=item on_refresh_end $term
124		649
125	Called just after the screen gets redrawn. See C<on_refresh_begin>.	650	Called just after the screen gets redrawn. See C<on_refresh_begin>.
		651
		652	=item on_user_command $term, $string
		653
		654	Called whenever a user-configured event is being activated (e.g. via
		655	a C<perl:string> action bound to a key, see description of the B<keysym>
		656	resource in the @@RXVT_NAME@@(1) manpage).
		657
		658	The event is simply the action string. This interface is assumed to change
		659	slightly in the future.
		660
		661	=item on_resize_all_windows $term, $new_width, $new_height
		662
		663	Called just after the new window size has been calculated, but before
		664	windows are actually being resized or hints are being set. If this hook
		665	returns TRUE, setting of the window hints is being skipped.
		666
		667	=item on_x_event $term, $event
		668
		669	Called on every X event received on the vt window (and possibly other
		670	windows). Should only be used as a last resort. Most event structure
		671	members are not passed.
		672
		673	=item on_root_event $term, $event
		674
		675	Like C<on_x_event>, but is called for events on the root window.
		676
		677	=item on_focus_in $term
		678
		679	Called whenever the window gets the keyboard focus, before rxvt-unicode
		680	does focus in processing.
		681
		682	=item on_focus_out $term
		683
		684	Called whenever the window loses keyboard focus, before rxvt-unicode does
		685	focus out processing.
		686
		687	=item on_configure_notify $term, $event
		688
		689	=item on_property_notify $term, $event
		690
		691	=item on_key_press $term, $event, $keysym, $octets
		692
		693	=item on_key_release $term, $event, $keysym
		694
		695	=item on_button_press $term, $event
		696
		697	=item on_button_release $term, $event
		698
		699	=item on_motion_notify $term, $event
		700
		701	=item on_map_notify $term, $event
		702
		703	=item on_unmap_notify $term, $event
		704
		705	Called whenever the corresponding X event is received for the terminal. If
		706	the hook returns true, then the event will be ignored by rxvt-unicode.
		707
		708	The event is a hash with most values as named by Xlib (see the XEvent
		709	manpage), with the additional members C<row> and C<col>, which are the
		710	(real, not screen-based) row and column under the mouse cursor.
		711
		712	C<on_key_press> additionally receives the string rxvt-unicode would
		713	output, if any, in locale-specific encoding.
		714
		715	subwindow.
		716
		717	=item on_client_message $term, $event
		718
		719	=item on_wm_protocols $term, $event
		720
		721	=item on_wm_delete_window $term, $event
		722
		723	Called when various types of ClientMessage events are received (all with
		724	format=32, WM_PROTOCOLS or WM_PROTOCOLS:WM_DELETE_WINDOW).
		725
		726	=item on_bell $term
		727
		728	Called on receipt of a bell character.
		729
		730	=back
		731
		732	=cut
		733
		734	package urxvt;
		735
		736	use utf8;
		737	use strict;
		738	use Carp ();
		739	use Scalar::Util ();
		740	use List::Util ();
		741
		742	our $VERSION = 1;
		743	our $TERM;
		744	our @TERM_INIT;
		745	our @TERM_EXT;
		746	our @HOOKNAME;
		747	our %HOOKTYPE = map +($HOOKNAME[$_] => $_), 0..$#HOOKNAME;
		748	our %OPTION;
		749
		750	our $LIBDIR;
		751	our $RESNAME;
		752	our $RESCLASS;
		753	our $RXVTNAME;
		754
		755	our $NOCHAR = chr 0xffff;
		756
		757	=head2 Variables in the C<urxvt> Package
		758
		759	=over 4
		760
		761	=item $urxvt::LIBDIR
		762
		763	The rxvt-unicode library directory, where, among other things, the perl
		764	modules and scripts are stored.
		765
		766	=item $urxvt::RESCLASS, $urxvt::RESCLASS
		767
		768	The resource class and name rxvt-unicode uses to look up X resources.
		769
		770	=item $urxvt::RXVTNAME
		771
		772	The basename of the installed binaries, usually C<urxvt>.
		773
		774	=item $urxvt::TERM
		775
		776	The current terminal. This variable stores the current C<urxvt::term>
		777	object, whenever a callback/hook is executing.
		778
		779	=item @urxvt::TERM_INIT
		780
		781	All code references in this array will be called as methods of the next newly
		782	created C<urxvt::term> object (during the C<on_init> phase). The array
		783	gets cleared before the code references that were in it are being executed,
		784	so references can push themselves onto it again if they so desire.
		785
		786	This complements to the perl-eval command line option, but gets executed
		787	first.
		788
		789	=item @urxvt::TERM_EXT
		790
		791	Works similar to C<@TERM_INIT>, but contains perl package/class names, which
		792	get registered as normal extensions after calling the hooks in C<@TERM_INIT>
		793	but before other extensions. Gets cleared just like C<@TERM_INIT>.
126		794
127	=back	795	=back
128		796
129	=head2 Functions in the C<urxvt> Package	797	=head2 Functions in the C<urxvt> Package
130		798
…		…
143	that calls this function.	811	that calls this function.
144		812
145	Using this function has the advantage that its output ends up in the	813	Using this function has the advantage that its output ends up in the
146	correct place, e.g. on stderr of the connecting urxvtc client.	814	correct place, e.g. on stderr of the connecting urxvtc client.
147		815
		816	Messages have a size limit of 1023 bytes currently.
		817
		818	=item @terms = urxvt::termlist
		819
		820	Returns all urxvt::term objects that exist in this process, regardless of
		821	whether they are started, being destroyed etc., so be careful. Only term
		822	objects that have perl extensions attached will be returned (because there
		823	is no urxvt::term objet associated with others).
		824
148	=item $time = urxvt::NOW	825	=item $time = urxvt::NOW
149		826
150	Returns the "current time" (as per the event loop).	827	Returns the "current time" (as per the event loop).
151		828
		829	=item urxvt::CurrentTime
		830
		831	=item urxvt::ShiftMask, LockMask, ControlMask, Mod1Mask, Mod2Mask,
		832	Mod3Mask, Mod4Mask, Mod5Mask, Button1Mask, Button2Mask, Button3Mask,
		833	Button4Mask, Button5Mask, AnyModifier
		834
		835	=item urxvt::NoEventMask, KeyPressMask, KeyReleaseMask,
		836	ButtonPressMask, ButtonReleaseMask, EnterWindowMask, LeaveWindowMask,
		837	PointerMotionMask, PointerMotionHintMask, Button1MotionMask, Button2MotionMask,
		838	Button3MotionMask, Button4MotionMask, Button5MotionMask, ButtonMotionMask,
		839	KeymapStateMask, ExposureMask, VisibilityChangeMask, StructureNotifyMask,
		840	ResizeRedirectMask, SubstructureNotifyMask, SubstructureRedirectMask,
		841	FocusChangeMask, PropertyChangeMask, ColormapChangeMask, OwnerGrabButtonMask
		842
		843	=item urxvt::KeyPress, KeyRelease, ButtonPress, ButtonRelease, MotionNotify,
		844	EnterNotify, LeaveNotify, FocusIn, FocusOut, KeymapNotify, Expose,
		845	GraphicsExpose, NoExpose, VisibilityNotify, CreateNotify, DestroyNotify,
		846	UnmapNotify, MapNotify, MapRequest, ReparentNotify, ConfigureNotify,
		847	ConfigureRequest, GravityNotify, ResizeRequest, CirculateNotify,
		848	CirculateRequest, PropertyNotify, SelectionClear, SelectionRequest,
		849	SelectionNotify, ColormapNotify, ClientMessage, MappingNotify
		850
		851	Various constants for use in X calls and event processing.
		852
		853	=back
		854
		855	=head2 RENDITION
		856
		857	Rendition bitsets contain information about colour, font, font styles and
		858	similar information for each screen cell.
		859
		860	The following "macros" deal with changes in rendition sets. You should
		861	never just create a bitset, you should always modify an existing one,
		862	as they contain important information required for correct operation of
		863	rxvt-unicode.
		864
		865	=over 4
		866
		867	=item $rend = urxvt::DEFAULT_RSTYLE
		868
		869	Returns the default rendition, as used when the terminal is starting up or
		870	being reset. Useful as a base to start when creating renditions.
		871
		872	=item $rend = urxvt::OVERLAY_RSTYLE
		873
		874	Return the rendition mask used for overlays by default.
		875
		876	=item $rendbit = urxvt::RS_Bold, urxvt::RS_Italic, urxvt::RS_Blink,
		877	urxvt::RS_RVid, urxvt::RS_Uline
		878
		879	Return the bit that enabled bold, italic, blink, reverse-video and
		880	underline, respectively. To enable such a style, just logically OR it into
		881	the bitset.
		882
		883	=item $foreground = urxvt::GET_BASEFG $rend
		884
		885	=item $background = urxvt::GET_BASEBG $rend
		886
		887	Return the foreground/background colour index, respectively.
		888
		889	=item $rend = urxvt::SET_FGCOLOR $rend, $new_colour
		890
		891	=item $rend = urxvt::SET_BGCOLOR $rend, $new_colour
		892
		893	=item $rend = urxvt::SET_COLOR $rend, $new_fg, $new_bg
		894
		895	Replace the foreground/background colour in the rendition mask with the
		896	specified one.
		897
		898	=item $value = urxvt::GET_CUSTOM $rend
		899
		900	Return the "custom" value: Every rendition has 5 bits for use by
		901	extensions. They can be set and changed as you like and are initially
		902	zero.
		903
		904	=item $rend = urxvt::SET_CUSTOM $rend, $new_value
		905
		906	Change the custom value.
		907
		908	=back
		909
152	=cut	910	=cut
153		911
154	package urxvt;
155
156	use strict;
157
158	our $term;
159	our @HOOKNAME;
160	our $LIBDIR;
161
162	BEGIN {	912	BEGIN {
163	urxvt->bootstrap;
164
165	# overwrite perl's warn	913	# overwrite perl's warn
166	*CORE::GLOBAL::warn = sub {	914	*CORE::GLOBAL::warn = sub {
167	my $msg = join "", @_;	915	my $msg = join "", @_;
168	$msg .= "\n"	916	$msg .= "\n"
169	unless $msg =~ /\n$/;	917	unless $msg =~ /\n$/;
170	urxvt::warn ($msg);	918	urxvt::warn ($msg);
171	};	919	};
172	}	920	}
173		921
174	my @hook_count;	922	no warnings 'utf8';
		923
175	my $verbosity = $ENV{URXVT_PERL_VERBOSITY};	924	my $verbosity = $ENV{URXVT_PERL_VERBOSITY};
176		925
177	sub verbose {	926	sub verbose {
178	my ($level, $msg) = @_;	927	my ($level, $msg) = @_;
179	warn "$msg\n" if $level <= $verbosity;	928	warn "$msg\n" if $level <= $verbosity;
180	}	929	}
181		930
182	# find on_xxx subs in the package and register them	931	my %extension_pkg;
183	# as hooks
184	sub register_package($) {
185	my ($pkg) = @_;
186
187	for my $htype (0.. $#HOOKNAME) {
188	my $name = $HOOKNAME[$htype];
189
190	my $ref = $pkg->can ("on_" . lc $name)
191	or next;
192
193	$term->{_hook}[$htype]{$ref*1} = $ref;
194	$hook_count[$htype]++
195	or set_should_invoke $htype, 1;
196	}
197	}
198
199	my $script_pkg = "script0000";
200	my %script_pkg;
201		932
202	# load a single script into its own package, once only	933	# load a single script into its own package, once only
203	sub script_package($) {	934	sub extension_package($) {
204	my ($path) = @_;	935	my ($path) = @_;
205		936
206	$script_pkg{$path} ||= do {	937	$extension_pkg{$path} ||= do {
207	my $pkg = "urxvt::" . ($script_pkg++);	938	$path =~ /([^\/\\]+)$/;
		939	my $pkg = $1;
		940	$pkg =~ s/[^[:word:]]/_/g;
		941	$pkg = "urxvt::ext::$pkg";
208		942
209	verbose 3, "loading script '$path' into package '$pkg'";	943	verbose 3, "loading extension '$path' into package '$pkg'";
210		944
211	open my $fh, "<:raw", $path	945	open my $fh, "<:raw", $path
212	or die "$path: $!";	946	or die "$path: $!";
213		947
214	my $source = "package $pkg; use strict; use utf8;\n"	948	my $source =
		949	"package $pkg; use strict; use utf8; no warnings 'utf8';\n"
215	. "#line 1 \"$path\"\n{\n"	950	. "#line 1 \"$path\"\n{\n"
216	. (do { local $/; <$fh> })	951	. (do { local $/; <$fh> })
217	. "\n};\n1";	952	. "\n};\n1";
218		953
		954	eval $source
219	eval $source or die "$path: $@";	955	or die "$path: $@";
220		956
221	$pkg	957	$pkg
222	}	958	}
223	}	959	}
224		960
		961	our $retval; # return value for urxvt
		962
225	# called by the rxvt core	963	# called by the rxvt core
226	sub invoke {	964	sub invoke {
227	local $term = shift;	965	local $TERM = shift;
228	my $htype = shift;	966	my $htype = shift;
229		967
230	if ($htype == 0) { # INIT	968	if ($htype == 0) { # INIT
231	my @dirs = ((split /:/, $term->resource ("perl_lib")), $LIBDIR);	969	my @dirs = ((split /:/, $TERM->resource ("perl_lib")), "$LIBDIR/perl");
232		970
233	for my $ext (split /:/, $term->resource ("perl_ext")) {	971	my %ext_arg;
		972
		973	{
		974	my @init = @TERM_INIT;
		975	@TERM_INIT = ();
		976	$_->($TERM) for @init;
		977	my @pkg = @TERM_EXT;
		978	@TERM_EXT = ();
		979	$TERM->register_package ($_) for @pkg;
		980	}
		981
		982	for (grep $_, map { split /,/, $TERM->resource ("perl_ext_$_") } 1, 2) {
		983	if ($_ eq "default") {
		984	$ext_arg{$_} ||= [] for qw(selection option-popup selection-popup searchable-scrollback readline);
		985	} elsif (/^-(.*)$/) {
		986	delete $ext_arg{$1};
		987	} elsif (/^([^<]+)<(.*)>$/) {
		988	push @{ $ext_arg{$1} }, $2;
		989	} else {
		990	$ext_arg{$_} ||= [];
		991	}
		992	}
		993
		994	for my $ext (sort keys %ext_arg) {
234	my @files = grep -f $_, map "$_/$ext", @dirs;	995	my @files = grep -f $_, map "$_/$ext", @dirs;
235		996
236	if (@files) {	997	if (@files) {
237	register_package script_package $files[0];	998	$TERM->register_package (extension_package $files[0], $ext_arg{$ext});
238	} else {	999	} else {
239	warn "perl extension '$ext' not found in perl library search path\n";	1000	warn "perl extension '$ext' not found in perl library search path\n";
240	}	1001	}
241	}	1002	}
242		1003
		1004	eval "#line 1 \"--perl-eval resource/argument\"\n" . $TERM->resource ("perl_eval");
		1005	warn $@ if $@;
		1006	}
		1007
		1008	$retval = undef;
		1009
		1010	if (my $cb = $TERM->{_hook}[$htype]) {
		1011	verbose 10, "$HOOKNAME[$htype] (" . (join ", ", $TERM, @_) . ")"
		1012	if $verbosity >= 10;
		1013
		1014	for my $pkg (keys %$cb) {
		1015	my $retval_ = eval { $cb->{$pkg}->($TERM->{_pkg}{$pkg}, @_) };
		1016	$retval ||= $retval_;
		1017
		1018	if ($@) {
		1019	$TERM->ungrab; # better to lose the grab than the session
		1020	warn $@;
		1021	}
		1022	}
		1023
		1024	verbose 11, "$HOOKNAME[$htype] returning <$retval>"
		1025	if $verbosity >= 11;
		1026	}
		1027
243	} elsif ($htype == 1) { # DESTROY	1028	if ($htype == 1) { # DESTROY
244	if (my $hook = $term->{_hook}) {	1029	# clear package objects
245	for my $htype (0..$#$hook) {	1030	%$_ = () for values %{ $TERM->{_pkg} };
246	$hook_count[$htype] -= scalar keys %{ $hook->[$htype] || {} }	1031
247	or set_should_invoke $htype, 0;	1032	# clear package
		1033	%$TERM = ();
		1034	}
		1035
		1036	$retval
		1037	}
		1038
		1039	sub SET_COLOR($$$) {
		1040	SET_BGCOLOR (SET_FGCOLOR ($_[0], $_[1]), $_[2])
		1041	}
		1042
		1043	sub rend2mask {
		1044	no strict 'refs';
		1045	my ($str, $mask) = (@_, 0);
		1046	my %color = ( fg => undef, bg => undef );
		1047	my @failed;
		1048	for my $spec ( split /\s+/, $str ) {
		1049	if ( $spec =~ /^([fb]g)[_:-]?(\d+)/i ) {
		1050	$color{lc($1)} = $2;
		1051	} else {
		1052	my $neg = $spec =~ s/^[-^]//;
		1053	unless ( exists &{"RS_$spec"} ) {
		1054	push @failed, $spec;
		1055	next;
		1056	}
		1057	my $cur = &{"RS_$spec"};
		1058	if ( $neg ) {
		1059	$mask &= ~$cur;
		1060	} else {
		1061	$mask |= $cur;
248	}	1062	}
249	}	1063	}
250	}	1064	}
		1065	($mask, @color{qw(fg bg)}, \@failed)
		1066	}
251		1067
252	my $cb = $term->{_hook}[$htype]	1068	# urxvt::term::extension
253	or return;
254		1069
255	verbose 10, "$HOOKNAME[$htype] (" . (join ", ", $term, @_) . ")"	1070	package urxvt::term::extension;
256	if $verbosity >= 10;
257		1071
		1072	sub enable {
		1073	my ($self, %hook) = @_;
		1074	my $pkg = $self->{_pkg};
		1075
258	while (my ($k, $v) = each %$cb) {	1076	while (my ($name, $cb) = each %hook) {
259	return 1 if $v->($term, @_);	1077	my $htype = $HOOKTYPE{uc $name};
		1078	defined $htype
		1079	or Carp::croak "unsupported hook type '$name'";
		1080
		1081	$self->set_should_invoke ($htype, +1)
		1082	unless exists $self->{term}{_hook}[$htype]{$pkg};
		1083
		1084	$self->{term}{_hook}[$htype]{$pkg} = $cb;
260	}	1085	}
		1086	}
261		1087
		1088	sub disable {
		1089	my ($self, @hook) = @_;
		1090	my $pkg = $self->{_pkg};
		1091
		1092	for my $name (@hook) {
		1093	my $htype = $HOOKTYPE{uc $name};
		1094	defined $htype
		1095	or Carp::croak "unsupported hook type '$name'";
		1096
		1097	$self->set_should_invoke ($htype, -1)
		1098	if delete $self->{term}{_hook}[$htype]{$pkg};
262	0	1099	}
263	}	1100	}
264		1101
265	=back	1102	our $AUTOLOAD;
		1103
		1104	sub AUTOLOAD {
		1105	$AUTOLOAD =~ /:([^:]+)$/
		1106	or die "FATAL: \$AUTOLOAD '$AUTOLOAD' unparsable";
		1107
		1108	eval qq{
		1109	sub $AUTOLOAD {
		1110	my \$proxy = shift;
		1111	\$proxy->{term}->$1 (\@_)
		1112	}
		1113	1
		1114	} or die "FATAL: unable to compile method forwarder: $@";
		1115
		1116	goto &$AUTOLOAD;
		1117	}
		1118
		1119	sub DESTROY {
		1120	# nop
		1121	}
		1122
		1123	# urxvt::destroy_hook
		1124
		1125	sub urxvt::destroy_hook::DESTROY {
		1126	${$_[0]}->();
		1127	}
		1128
		1129	sub urxvt::destroy_hook(&) {
		1130	bless \shift, urxvt::destroy_hook::
		1131	}
		1132
		1133	package urxvt::anyevent;
		1134
		1135	=head2 The C<urxvt::anyevent> Class
		1136
		1137	The sole purpose of this class is to deliver an interface to the
		1138	C<AnyEvent> module - any module using it will work inside urxvt without
		1139	further programming. The only exception is that you cannot wait on
		1140	condition variables, but non-blocking condvar use is ok. What this means
		1141	is that you cannot use blocking APIs, but the non-blocking variant should
		1142	work.
		1143
		1144	=cut
		1145
		1146	our $VERSION = '5.23';
		1147
		1148	$INC{"urxvt/anyevent.pm"} = 1; # mark us as there
		1149	push @AnyEvent::REGISTRY, [urxvt => urxvt::anyevent::];
		1150
		1151	sub timer {
		1152	my ($class, %arg) = @_;
		1153
		1154	my $cb = $arg{cb};
		1155
		1156	urxvt::timer
		1157	->new
		1158	->after ($arg{after}, $arg{interval})
		1159	->cb ($arg{interval} ? $cb : sub {
		1160	$_[0]->stop; # need to cancel manually
		1161	$cb->();
		1162	})
		1163	}
		1164
		1165	sub io {
		1166	my ($class, %arg) = @_;
		1167
		1168	my $cb = $arg{cb};
		1169	my $fd = fileno $arg{fh};
		1170	defined $fd or $fd = $arg{fh};
		1171
		1172	bless [$arg{fh}, urxvt::iow
		1173	->new
		1174	->fd ($fd)
		1175	->events (($arg{poll} =~ /r/ ? 1 : 0)
		1176	| ($arg{poll} =~ /w/ ? 2 : 0))
		1177	->start
		1178	->cb ($cb)
		1179	], urxvt::anyevent::
		1180	}
		1181
		1182	sub idle {
		1183	my ($class, %arg) = @_;
		1184
		1185	my $cb = $arg{cb};
		1186
		1187	urxvt::iw
		1188	->new
		1189	->start
		1190	->cb ($cb)
		1191	}
		1192
		1193	sub child {
		1194	my ($class, %arg) = @_;
		1195
		1196	my $cb = $arg{cb};
		1197
		1198	urxvt::pw
		1199	->new
		1200	->start ($arg{pid})
		1201	->cb (sub {
		1202	$_[0]->stop; # need to cancel manually
		1203	$cb->($_[0]->rpid, $_[0]->rstatus);
		1204	})
		1205	}
		1206
		1207	sub DESTROY {
		1208	$_[0][1]->stop;
		1209	}
		1210
		1211	sub one_event {
		1212	Carp::croak "AnyEvent->one_event blocking wait unsupported in urxvt, use a non-blocking API";
		1213	}
		1214
		1215	package urxvt::term;
266		1216
267	=head2 The C<urxvt::term> Class	1217	=head2 The C<urxvt::term> Class
268		1218
269	=over 4	1219	=over 4
		1220
		1221	=cut
		1222
		1223	# find on_xxx subs in the package and register them
		1224	# as hooks
		1225	sub register_package {
		1226	my ($self, $pkg, $argv) = @_;
		1227
		1228	no strict 'refs';
		1229
		1230	urxvt::verbose 6, "register package $pkg to $self";
		1231
		1232	@{"$pkg\::ISA"} = urxvt::term::extension::;
		1233
		1234	my $proxy = bless {
		1235	_pkg => $pkg,
		1236	argv => $argv,
		1237	}, $pkg;
		1238	Scalar::Util::weaken ($proxy->{term} = $self);
		1239
		1240	$self->{_pkg}{$pkg} = $proxy;
		1241
		1242	for my $name (@HOOKNAME) {
		1243	if (my $ref = $pkg->can ("on_" . lc $name)) {
		1244	$proxy->enable ($name => $ref);
		1245	}
		1246	}
		1247	}
		1248
		1249	=item $term = new urxvt::term $envhashref, $rxvtname, [arg...]
		1250
		1251	Creates a new terminal, very similar as if you had started it with system
		1252	C<$rxvtname, arg...>. C<$envhashref> must be a reference to a C<%ENV>-like
		1253	hash which defines the environment of the new terminal.
		1254
		1255	Croaks (and probably outputs an error message) if the new instance
		1256	couldn't be created. Returns C<undef> if the new instance didn't
		1257	initialise perl, and the terminal object otherwise. The C<init> and
		1258	C<start> hooks will be called before this call returns, and are free to
		1259	refer to global data (which is race free).
		1260
		1261	=cut
		1262
		1263	sub new {
		1264	my ($class, $env, @args) = @_;
		1265
		1266	$env or Carp::croak "environment hash missing in call to urxvt::term->new";
		1267	@args or Carp::croak "name argument missing in call to urxvt::term->new";
		1268
		1269	_new ([ map "$_=$env->{$_}", keys %$env ], \@args);
		1270	}
		1271
		1272	=item $term->destroy
		1273
		1274	Destroy the terminal object (close the window, free resources
		1275	etc.). Please note that @@RXVT_NAME@@ will not exit as long as any event
		1276	watchers (timers, io watchers) are still active.
		1277
		1278	=item $term->exec_async ($cmd[, @args])
		1279
		1280	Works like the combination of the C<fork>/C<exec> builtins, which executes
		1281	("starts") programs in the background. This function takes care of setting
		1282	the user environment before exec'ing the command (e.g. C<PATH>) and should
		1283	be preferred over explicit calls to C<exec> or C<system>.
		1284
		1285	Returns the pid of the subprocess or C<undef> on error.
		1286
		1287	=cut
		1288
		1289	sub exec_async {
		1290	my $self = shift;
		1291
		1292	my $pid = fork;
		1293
		1294	return $pid
		1295	if !defined $pid or $pid;
		1296
		1297	%ENV = %{ $self->env };
		1298
		1299	exec @_;
		1300	urxvt::_exit 255;
		1301	}
		1302
		1303	=item $isset = $term->option ($optval[, $set])
		1304
		1305	Returns true if the option specified by C<$optval> is enabled, and
		1306	optionally change it. All option values are stored by name in the hash
		1307	C<%urxvt::OPTION>. Options not enabled in this binary are not in the hash.
		1308
		1309	Here is a likely non-exhaustive list of option names, please see the
		1310	source file F</src/optinc.h> to see the actual list:
		1311
		1312	borderLess console cursorBlink cursorUnderline hold iconic insecure
		1313	intensityStyles jumpScroll loginShell mapAlert meta8 mouseWheelScrollPage
		1314	override-redirect pastableTabs pointerBlank reverseVideo scrollBar
		1315	scrollBar_floating scrollBar_right scrollTtyKeypress scrollTtyOutput
		1316	scrollWithBuffer secondaryScreen secondaryScroll skipBuiltinGlyphs
		1317	transparent tripleclickwords utmpInhibit visualBell
270		1318
271	=item $value = $term->resource ($name[, $newval])	1319	=item $value = $term->resource ($name[, $newval])
272		1320
273	Returns the current resource value associated with a given name and	1321	Returns the current resource value associated with a given name and
274	optionally sets a new value. Setting values is most useful in the C<init>	1322	optionally sets a new value. Setting values is most useful in the C<init>
…		…
283	likely change).	1331	likely change).
284		1332
285	Please note that resource strings will currently only be freed when the	1333	Please note that resource strings will currently only be freed when the
286	terminal is destroyed, so changing options frequently will eat memory.	1334	terminal is destroyed, so changing options frequently will eat memory.
287		1335
288	Here is a a likely non-exhaustive list of resource names, not all of which	1336	Here is a likely non-exhaustive list of resource names, not all of which
289	are supported in every build, please see the source to see the actual	1337	are supported in every build, please see the source file F</src/rsinc.h>
290	list:	1338	to see the actual list:
291		1339
292	answerbackstring backgroundPixmap backspace_key boldFont boldItalicFont	1340	answerbackstring backgroundPixmap backspace_key boldFont boldItalicFont
293	borderLess color cursorBlink cursorUnderline cutchars delete_key	1341	borderLess chdir color cursorBlink cursorUnderline cutchars delete_key
294	display_name embed ext_bwidth fade font geometry hold iconName	1342	display_name embed ext_bwidth fade font geometry hold iconName
295	imFont imLocale inputMethod insecure int_bwidth intensityStyles	1343	imFont imLocale inputMethod insecure int_bwidth intensityStyles
296	italicFont jumpScroll lineSpace loginShell mapAlert menu meta8 modifier	1344	italicFont jumpScroll lineSpace letterSpace loginShell mapAlert meta8
297	mouseWheelScrollPage name pastableTabs path perl_eval perl_ext	1345	modifier mouseWheelScrollPage name override_redirect pastableTabs path
298	perl_lib pointerBlank pointerBlankDelay preeditType print_pipe pty_fd	1346	perl_eval perl_ext_1 perl_ext_2 perl_lib pointerBlank pointerBlankDelay
299	reverseVideo saveLines scrollBar scrollBar_align scrollBar_floating	1347	preeditType print_pipe pty_fd reverseVideo saveLines scrollBar
300	scrollBar_right scrollBar_thickness scrollTtyKeypress scrollTtyOutput	1348	scrollBar_align scrollBar_floating scrollBar_right scrollBar_thickness
301	scrollWithBuffer scrollstyle secondaryScreen secondaryScroll selectstyle	1349	scrollTtyKeypress scrollTtyOutput scrollWithBuffer scrollstyle
302	shade term_name title transparent transparent_all tripleclickwords	1350	secondaryScreen secondaryScroll shade term_name title
303	utmpInhibit visualBell	1351	transient_for transparent transparent_all tripleclickwords utmpInhibit
		1352	visualBell
304		1353
305	=cut	1354	=cut
306		1355
307	sub urxvt::term::resource($$;$) {	1356	sub resource($$;$) {
308	my ($self, $name) = (shift, shift);	1357	my ($self, $name) = (shift, shift);
309	unshift @_, $self, $name, ($name =~ s/\s*\+\s*(\d+)$// ? $1 : 0);	1358	unshift @_, $self, $name, ($name =~ s/\s*\+\s*(\d+)$// ? $1 : 0);
310	goto &urxvt::term::_resource;	1359	goto &urxvt::term::_resource
311	}	1360	}
		1361
		1362	=item $value = $term->x_resource ($pattern)
		1363
		1364	Returns the X-Resource for the given pattern, excluding the program or
		1365	class name, i.e. C<< $term->x_resource ("boldFont") >> should return the
		1366	same value as used by this instance of rxvt-unicode. Returns C<undef> if no
		1367	resource with that pattern exists.
		1368
		1369	This method should only be called during the C<on_start> hook, as there is
		1370	only one resource database per display, and later invocations might return
		1371	the wrong resources.
		1372
		1373	=item $success = $term->parse_keysym ($keysym_spec, $command_string)
		1374
		1375	Adds a keymap translation exactly as specified via a resource. See the
		1376	C<keysym> resource in the @@RXVT_NAME@@(1) manpage.
		1377
		1378	=item $rend = $term->rstyle ([$new_rstyle])
		1379
		1380	Return and optionally change the current rendition. Text that is output by
		1381	the terminal application will use this style.
		1382
		1383	=item ($row, $col) = $term->screen_cur ([$row, $col])
		1384
		1385	Return the current coordinates of the text cursor position and optionally
		1386	set it (which is usually bad as applications don't expect that).
312		1387
313	=item ($row, $col) = $term->selection_mark ([$row, $col])	1388	=item ($row, $col) = $term->selection_mark ([$row, $col])
314		1389
315	=item ($row, $col) = $term->selection_beg ([$row, $col])	1390	=item ($row, $col) = $term->selection_beg ([$row, $col])
316		1391
317	=item ($row, $col) = $term->selection_end ([$row, $col])	1392	=item ($row, $col) = $term->selection_end ([$row, $col])
318		1393
319	Return the current values of the selection mark, begin or end positions,	1394	Return the current values of the selection mark, begin or end positions.
320	and optionally set them to new values.
321		1395
		1396	When arguments are given, then the selection coordinates are set to
		1397	C<$row> and C<$col>, and the selection screen is set to the current
		1398	screen.
		1399
		1400	=item $screen = $term->selection_screen ([$screen])
		1401
		1402	Returns the current selection screen, and then optionally sets it.
		1403
		1404	=item $term->selection_make ($eventtime[, $rectangular])
		1405
		1406	Tries to make a selection as set by C<selection_beg> and
		1407	C<selection_end>. If C<$rectangular> is true (default: false), a
		1408	rectangular selection will be made. This is the preferred function to make
		1409	a selection.
		1410
322	=item $success = $term->selection_grab ($eventtime)	1411	=item $success = $term->selection_grab ($eventtime[, $clipboard])
323		1412
324	Try to request the primary selection from the server (for example, as set	1413	Try to acquire ownership of the primary (clipboard if C<$clipboard> is
325	by the next method).	1414	true) selection from the server. The corresponding text can be set
		1415	with the next method. No visual feedback will be given. This function
		1416	is mostly useful from within C<on_sel_grab> hooks.
326		1417
327	=item $oldtext = $term->selection ([$newtext])	1418	=item $oldtext = $term->selection ([$newtext, $clipboard])
328		1419
329	Return the current selection text and optionally replace it by C<$newtext>.	1420	Return the current selection (clipboard if C<$clipboard> is true) text
		1421	and optionally replace it by C<$newtext>.
330		1422
		1423	=item $term->selection_clear ([$clipboard])
		1424
		1425	Revoke ownership of the primary (clipboard if C<$clipboard> is true) selection.
		1426
331	=item $term->scr_overlay ($x, $y, $text)	1427	=item $term->overlay_simple ($x, $y, $text)
332		1428
333	Create a simple multi-line overlay box. See the next method for details.	1429	Create a simple multi-line overlay box. See the next method for details.
334		1430
335	=cut	1431	=cut
336		1432
337	sub urxvt::term::scr_overlay {	1433	sub overlay_simple {
338	my ($self, $x, $y, $text) = @_;	1434	my ($self, $x, $y, $text) = @_;
339		1435
340	my @lines = split /\n/, $text;	1436	my @lines = split /\n/, $text;
341		1437
342	my $w = 0;	1438	my $w = List::Util::max map $self->strwidth ($_), @lines;
343	for (map $self->strwidth ($_), @lines) {
344	$w = $_ if $w < $_;
345	}
346		1439
347	$self->scr_overlay_new ($x, $y, $w, scalar @lines);	1440	my $overlay = $self->overlay ($x, $y, $w, scalar @lines);
348	$self->scr_overlay_set (0, $_, $lines[$_]) for 0.. $#lines;	1441	$overlay->set (0, $_, $lines[$_]) for 0.. $#lines;
349	}
350		1442
		1443	$overlay
		1444	}
		1445
351	=item $term->scr_overlay_new ($x, $y, $width, $height)	1446	=item $term->overlay ($x, $y, $width, $height[, $rstyle[, $border]])
352		1447
353	Create a new (empty) overlay at the given position with the given	1448	Create a new (empty) overlay at the given position with the given
354	width/height. A border will be put around the box. If either C<$x> or	1449	width/height. C<$rstyle> defines the initial rendition style
355	C<$y> is negative, then this is counted from the right/bottom side,	1450	(default: C<OVERLAY_RSTYLE>).
356	respectively.
357		1451
358	=item $term->scr_overlay_off	1452	If C<$border> is C<2> (default), then a decorative border will be put
		1453	around the box.
359		1454
360	Switch the overlay off again.	1455	If either C<$x> or C<$y> is negative, then this is counted from the
		1456	right/bottom side, respectively.
361		1457
362	=item $term->scr_overlay_set_char ($x, $y, $char, $rend = OVERLAY_RSTYLE)	1458	This method returns an urxvt::overlay object. The overlay will be visible
		1459	as long as the perl object is referenced.
363		1460
364	Put a single character (specified numerically) at the given overlay	1461	The methods currently supported on C<urxvt::overlay> objects are:
365	position.
366		1462
		1463	=over 4
		1464
367	=item $term->scr_overlay_set ($x, $y, $text)	1465	=item $overlay->set ($x, $y, $text[, $rend])
368		1466
369	Write a string at the given position into the overlay.	1467	Similar to C<< $term->ROW_t >> and C<< $term->ROW_r >> in that it puts
		1468	text in rxvt-unicode's special encoding and an array of rendition values
		1469	at a specific position inside the overlay.
370		1470
		1471	If C<$rend> is missing, then the rendition will not be changed.
		1472
		1473	=item $overlay->hide
		1474
		1475	If visible, hide the overlay, but do not destroy it.
		1476
		1477	=item $overlay->show
		1478
		1479	If hidden, display the overlay again.
		1480
		1481	=back
		1482
		1483	=item $popup = $term->popup ($event)
		1484
		1485	Creates a new C<urxvt::popup> object that implements a popup menu. The
		1486	C<$event> I<must> be the event causing the menu to pop up (a button event,
		1487	currently).
		1488
		1489	=cut
		1490
		1491	sub popup {
		1492	my ($self, $event) = @_;
		1493
		1494	$self->grab ($event->{time}, 1)
		1495	or return;
		1496
		1497	my $popup = bless {
		1498	term => $self,
		1499	event => $event,
		1500	}, urxvt::popup::;
		1501
		1502	Scalar::Util::weaken $popup->{term};
		1503
		1504	$self->{_destroy}{$popup} = urxvt::destroy_hook { $popup->{popup}->destroy };
		1505	Scalar::Util::weaken $self->{_destroy}{$popup};
		1506
		1507	$popup
		1508	}
		1509
371	=item $cellwidth = $term->strwidth $string	1510	=item $cellwidth = $term->strwidth ($string)
372		1511
373	Returns the number of screen-cells this string would need. Correctly	1512	Returns the number of screen-cells this string would need. Correctly
374	accounts for wide and combining characters.	1513	accounts for wide and combining characters.
375		1514
376	=item $octets = $term->locale_encode $string	1515	=item $octets = $term->locale_encode ($string)
377		1516
378	Convert the given text string into the corresponding locale encoding.	1517	Convert the given text string into the corresponding locale encoding.
379		1518
380	=item $string = $term->locale_decode $octets	1519	=item $string = $term->locale_decode ($octets)
381		1520
382	Convert the given locale-encoded octets into a perl string.	1521	Convert the given locale-encoded octets into a perl string.
383		1522
		1523	=item $term->scr_xor_span ($beg_row, $beg_col, $end_row, $end_col[, $rstyle])
		1524
		1525	XORs the rendition values in the given span with the provided value
		1526	(default: C<RS_RVid>), which I<MUST NOT> contain font styles. Useful in
		1527	refresh hooks to provide effects similar to the selection.
		1528
		1529	=item $term->scr_xor_rect ($beg_row, $beg_col, $end_row, $end_col[, $rstyle1[, $rstyle2]])
		1530
		1531	Similar to C<scr_xor_span>, but xors a rectangle instead. Trailing
		1532	whitespace will additionally be xored with the C<$rstyle2>, which defaults
		1533	to C<RS_RVid | RS_Uline>, which removes reverse video again and underlines
		1534	it instead. Both styles I<MUST NOT> contain font styles.
		1535
		1536	=item $term->scr_bell
		1537
		1538	Ring the bell!
		1539
		1540	=item $term->scr_add_lines ($string)
		1541
		1542	Write the given text string to the screen, as if output by the application
		1543	running inside the terminal. It may not contain command sequences (escape
		1544	codes), but is free to use line feeds, carriage returns and tabs. The
		1545	string is a normal text string, not in locale-dependent encoding.
		1546
		1547	Normally its not a good idea to use this function, as programs might be
		1548	confused by changes in cursor position or scrolling. Its useful inside a
		1549	C<on_add_lines> hook, though.
		1550
		1551	=item $term->scr_change_screen ($screen)
		1552
		1553	Switch to given screen - 0 primary, 1 secondary.
		1554
		1555	=item $term->cmd_parse ($octets)
		1556
		1557	Similar to C<scr_add_lines>, but the argument must be in the
		1558	locale-specific encoding of the terminal and can contain command sequences
		1559	(escape codes) that will be interpreted.
		1560
384	=item $term->tt_write ($octets)	1561	=item $term->tt_write ($octets)
385		1562
386	Write the octets given in C<$data> to the tty (i.e. as program input). To	1563	Write the octets given in C<$octets> to the tty (i.e. as program input). To
387	pass characters instead of octets, you should convetr you strings first to	1564	pass characters instead of octets, you should convert your strings first
388	the locale-specific encoding using C<< $term->locale_encode >>.	1565	to the locale-specific encoding using C<< $term->locale_encode >>.
		1566
		1567	=item $term->tt_paste ($octets)
		1568
		1569	Write the octets given in C<$octets> to the tty as a paste, converting NL to
		1570	CR and bracketing the data with control sequences if bracketed paste mode
		1571	is set.
		1572
		1573	=item $old_events = $term->pty_ev_events ([$new_events])
		1574
		1575	Replaces the event mask of the pty watcher by the given event mask. Can
		1576	be used to suppress input and output handling to the pty/tty. See the
		1577	description of C<< urxvt::timer->events >>. Make sure to always restore
		1578	the previous value.
		1579
		1580	=item $fd = $term->pty_fd
		1581
		1582	Returns the master file descriptor for the pty in use, or C<-1> if no pty
		1583	is used.
		1584
		1585	=item $windowid = $term->parent
		1586
		1587	Return the window id of the toplevel window.
		1588
		1589	=item $windowid = $term->vt
		1590
		1591	Return the window id of the terminal window.
		1592
		1593	=item $term->vt_emask_add ($x_event_mask)
		1594
		1595	Adds the specified events to the vt event mask. Useful e.g. when you want
		1596	to receive pointer events all the times:
		1597
		1598	$term->vt_emask_add (urxvt::PointerMotionMask);
		1599
		1600	=item $term->focus_in
		1601
		1602	=item $term->focus_out
		1603
		1604	=item $term->key_press ($state, $keycode[, $time])
		1605
		1606	=item $term->key_release ($state, $keycode[, $time])
		1607
		1608	Deliver various fake events to to terminal.
		1609
		1610	=item $window_width = $term->width
		1611
		1612	=item $window_height = $term->height
		1613
		1614	=item $font_width = $term->fwidth
		1615
		1616	=item $font_height = $term->fheight
		1617
		1618	=item $font_ascent = $term->fbase
		1619
		1620	=item $terminal_rows = $term->nrow
		1621
		1622	=item $terminal_columns = $term->ncol
		1623
		1624	=item $has_focus = $term->focus
		1625
		1626	=item $is_mapped = $term->mapped
		1627
		1628	=item $max_scrollback = $term->saveLines
		1629
		1630	=item $nrow_plus_saveLines = $term->total_rows
		1631
		1632	=item $topmost_scrollback_row = $term->top_row
		1633
		1634	Return various integers describing terminal characteristics.
		1635
		1636	=item $x_display = $term->display_id
		1637
		1638	Return the DISPLAY used by rxvt-unicode.
		1639
		1640	=item $lc_ctype = $term->locale
		1641
		1642	Returns the LC_CTYPE category string used by this rxvt-unicode.
		1643
		1644	=item $env = $term->env
		1645
		1646	Returns a copy of the environment in effect for the terminal as a hashref
		1647	similar to C<\%ENV>.
		1648
		1649	=item @envv = $term->envv
		1650
		1651	Returns the environment as array of strings of the form C<VAR=VALUE>.
		1652
		1653	=item @argv = $term->argv
		1654
		1655	Return the argument vector as this terminal, similar to @ARGV, but
		1656	includes the program name as first element.
		1657
		1658	=cut
		1659
		1660	sub env {
		1661	+{ map /^([^=]+)(?:=(.*))?$/s && ($1 => $2), $_[0]->envv }
		1662	}
		1663
		1664	=item $modifiermask = $term->ModLevel3Mask
		1665
		1666	=item $modifiermask = $term->ModMetaMask
		1667
		1668	=item $modifiermask = $term->ModNumLockMask
		1669
		1670	Return the modifier masks corresponding to the "ISO Level 3 Shift" (often
		1671	AltGr), the meta key (often Alt) and the num lock key, if applicable.
		1672
		1673	=item $screen = $term->current_screen
		1674
		1675	Returns the currently displayed screen (0 primary, 1 secondary).
		1676
		1677	=item $cursor_is_hidden = $term->hidden_cursor
		1678
		1679	Returns whether the cursor is currently hidden or not.
		1680
		1681	=item $view_start = $term->view_start ([$newvalue])
		1682
		1683	Returns the row number of the topmost displayed line. Maximum value is
		1684	C<0>, which displays the normal terminal contents. Lower values scroll
		1685	this many lines into the scrollback buffer.
		1686
		1687	=item $term->want_refresh
		1688
		1689	Requests a screen refresh. At the next opportunity, rxvt-unicode will
		1690	compare the on-screen display with its stored representation. If they
		1691	differ, it redraws the differences.
		1692
		1693	Used after changing terminal contents to display them.
		1694
		1695	=item $text = $term->ROW_t ($row_number[, $new_text[, $start_col]])
		1696
		1697	Returns the text of the entire row with number C<$row_number>. Row C<< $term->top_row >>
		1698	is the topmost terminal line, row C<< $term->nrow-1 >> is the bottommost
		1699	terminal line. Nothing will be returned if a nonexistent line
		1700	is requested.
		1701
		1702	If C<$new_text> is specified, it will replace characters in the current
		1703	line, starting at column C<$start_col> (default C<0>), which is useful
		1704	to replace only parts of a line. The font index in the rendition will
		1705	automatically be updated.
		1706
		1707	C<$text> is in a special encoding: tabs and wide characters that use more
		1708	than one cell when displayed are padded with C<$urxvt::NOCHAR> (chr 65535)
		1709	characters. Characters with combining characters and other characters that
		1710	do not fit into the normal text encoding will be replaced with characters
		1711	in the private use area.
		1712
		1713	You have to obey this encoding when changing text. The advantage is
		1714	that C<substr> and similar functions work on screen cells and not on
		1715	characters.
		1716
		1717	The methods C<< $term->special_encode >> and C<< $term->special_decode >>
		1718	can be used to convert normal strings into this encoding and vice versa.
		1719
		1720	=item $rend = $term->ROW_r ($row_number[, $new_rend[, $start_col]])
		1721
		1722	Like C<< $term->ROW_t >>, but returns an arrayref with rendition
		1723	bitsets. Rendition bitsets contain information about colour, font, font
		1724	styles and similar information. See also C<< $term->ROW_t >>.
		1725
		1726	When setting rendition, the font mask will be ignored.
		1727
		1728	See the section on RENDITION, above.
		1729
		1730	=item $length = $term->ROW_l ($row_number[, $new_length])
		1731
		1732	Returns the number of screen cells that are in use ("the line
		1733	length"). Unlike the urxvt core, this returns C<< $term->ncol >> if the
		1734	line is joined with the following one.
		1735
		1736	=item $bool = $term->is_longer ($row_number)
		1737
		1738	Returns true if the row is part of a multiple-row logical "line" (i.e.
		1739	joined with the following row), which means all characters are in use
		1740	and it is continued on the next row (and possibly a continuation of the
		1741	previous row(s)).
		1742
		1743	=item $line = $term->line ($row_number)
		1744
		1745	Create and return a new C<urxvt::line> object that stores information
		1746	about the logical line that row C<$row_number> is part of. It supports the
		1747	following methods:
		1748
		1749	=over 4
		1750
		1751	=item $text = $line->t ([$new_text])
		1752
		1753	Returns or replaces the full text of the line, similar to C<ROW_t>
		1754
		1755	=item $rend = $line->r ([$new_rend])
		1756
		1757	Returns or replaces the full rendition array of the line, similar to C<ROW_r>
		1758
		1759	=item $length = $line->l
		1760
		1761	Returns the length of the line in cells, similar to C<ROW_l>.
		1762
		1763	=item $rownum = $line->beg
		1764
		1765	=item $rownum = $line->end
		1766
		1767	Return the row number of the first/last row of the line, respectively.
		1768
		1769	=item $offset = $line->offset_of ($row, $col)
		1770
		1771	Returns the character offset of the given row|col pair within the logical
		1772	line. Works for rows outside the line, too, and returns corresponding
		1773	offsets outside the string.
		1774
		1775	=item ($row, $col) = $line->coord_of ($offset)
		1776
		1777	Translates a string offset into terminal coordinates again.
389		1778
390	=back	1779	=back
		1780
		1781	=cut
		1782
		1783	sub line {
		1784	my ($self, $row) = @_;
		1785
		1786	my $maxrow = $self->nrow - 1;
		1787
		1788	my ($beg, $end) = ($row, $row);
		1789
		1790	--$beg while $self->ROW_is_longer ($beg - 1);
		1791	++$end while $self->ROW_is_longer ($end) && $end < $maxrow;
		1792
		1793	bless {
		1794	term => $self,
		1795	beg => $beg,
		1796	end => $end,
		1797	ncol => $self->ncol,
		1798	len => ($end - $beg) * $self->ncol + $self->ROW_l ($end),
		1799	}, urxvt::line::
		1800	}
		1801
		1802	sub urxvt::line::t {
		1803	my ($self) = @_;
		1804
		1805	if (@_ > 1)
		1806	{
		1807	$self->{term}->ROW_t ($_, $_[1], 0, ($_ - $self->{beg}) * $self->{ncol}, $self->{ncol})
		1808	for $self->{beg} .. $self->{end};
		1809	}
		1810
		1811	defined wantarray &&
		1812	substr +(join "", map $self->{term}->ROW_t ($_), $self->{beg} .. $self->{end}),
		1813	0, $self->{len}
		1814	}
		1815
		1816	sub urxvt::line::r {
		1817	my ($self) = @_;
		1818
		1819	if (@_ > 1)
		1820	{
		1821	$self->{term}->ROW_r ($_, $_[1], 0, ($_ - $self->{beg}) * $self->{ncol}, $self->{ncol})
		1822	for $self->{beg} .. $self->{end};
		1823	}
		1824
		1825	if (defined wantarray) {
		1826	my $rend = [
		1827	map @{ $self->{term}->ROW_r ($_) }, $self->{beg} .. $self->{end}
		1828	];
		1829	$#$rend = $self->{len} - 1;
		1830	return $rend;
		1831	}
		1832
		1833	()
		1834	}
		1835
		1836	sub urxvt::line::beg { $_[0]{beg} }
		1837	sub urxvt::line::end { $_[0]{end} }
		1838	sub urxvt::line::l { $_[0]{len} }
		1839
		1840	sub urxvt::line::offset_of {
		1841	my ($self, $row, $col) = @_;
		1842
		1843	($row - $self->{beg}) * $self->{ncol} + $col
		1844	}
		1845
		1846	sub urxvt::line::coord_of {
		1847	my ($self, $offset) = @_;
		1848
		1849	use integer;
		1850
		1851	(
		1852	$offset / $self->{ncol} + $self->{beg},
		1853	$offset % $self->{ncol}
		1854	)
		1855	}
		1856
		1857	=item $text = $term->special_encode $string
		1858
		1859	Converts a perl string into the special encoding used by rxvt-unicode,
		1860	where one character corresponds to one screen cell. See
		1861	C<< $term->ROW_t >> for details.
		1862
		1863	=item $string = $term->special_decode $text
		1864
		1865	Converts rxvt-unicodes text representation into a perl string. See
		1866	C<< $term->ROW_t >> for details.
		1867
		1868	=item $success = $term->grab_button ($button, $modifiermask[, $window = $term->vt])
		1869
		1870	=item $term->ungrab_button ($button, $modifiermask[, $window = $term->vt])
		1871
		1872	Register/unregister a synchronous button grab. See the XGrabButton
		1873	manpage.
		1874
		1875	=item $success = $term->grab ($eventtime[, $sync])
		1876
		1877	Calls XGrabPointer and XGrabKeyboard in asynchronous (default) or
		1878	synchronous (C<$sync> is true). Also remembers the grab timestamp.
		1879
		1880	=item $term->allow_events_async
		1881
		1882	Calls XAllowEvents with AsyncBoth for the most recent grab.
		1883
		1884	=item $term->allow_events_sync
		1885
		1886	Calls XAllowEvents with SyncBoth for the most recent grab.
		1887
		1888	=item $term->allow_events_replay
		1889
		1890	Calls XAllowEvents with both ReplayPointer and ReplayKeyboard for the most
		1891	recent grab.
		1892
		1893	=item $term->ungrab
		1894
		1895	Calls XUngrabPointer and XUngrabKeyboard for the most recent grab. Is called automatically on
		1896	evaluation errors, as it is better to lose the grab in the error case as
		1897	the session.
		1898
		1899	=item $atom = $term->XInternAtom ($atom_name[, $only_if_exists])
		1900
		1901	=item $atom_name = $term->XGetAtomName ($atom)
		1902
		1903	=item @atoms = $term->XListProperties ($window)
		1904
		1905	=item ($type,$format,$octets) = $term->XGetWindowProperty ($window, $property)
		1906
		1907	=item $term->XChangeProperty ($window, $property, $type, $format, $octets)
		1908
		1909	=item $term->XDeleteProperty ($window, $property)
		1910
		1911	=item $window = $term->DefaultRootWindow
		1912
		1913	=item $term->XReparentWindow ($window, $parent, [$x, $y])
		1914
		1915	=item $term->XMapWindow ($window)
		1916
		1917	=item $term->XUnmapWindow ($window)
		1918
		1919	=item $term->XMoveResizeWindow ($window, $x, $y, $width, $height)
		1920
		1921	=item ($x, $y, $child_window) = $term->XTranslateCoordinates ($src, $dst, $x, $y)
		1922
		1923	=item $term->XChangeInput ($window, $add_events[, $del_events])
		1924
		1925	Various X or X-related functions. The C<$term> object only serves as
		1926	the source of the display, otherwise those functions map more-or-less
		1927	directly onto the X functions of the same name.
		1928
		1929	=back
		1930
		1931	=cut
		1932
		1933	package urxvt::popup;
		1934
		1935	=head2 The C<urxvt::popup> Class
		1936
		1937	=over 4
		1938
		1939	=cut
		1940
		1941	sub add_item {
		1942	my ($self, $item) = @_;
		1943
		1944	$item->{rend}{normal} = "\x1b[0;30;47m" unless exists $item->{rend}{normal};
		1945	$item->{rend}{hover} = "\x1b[0;30;46m" unless exists $item->{rend}{hover};
		1946	$item->{rend}{active} = "\x1b[m" unless exists $item->{rend}{active};
		1947
		1948	$item->{render} ||= sub { $_[0]{text} };
		1949
		1950	push @{ $self->{item} }, $item;
		1951	}
		1952
		1953	=item $popup->add_title ($title)
		1954
		1955	Adds a non-clickable title to the popup.
		1956
		1957	=cut
		1958
		1959	sub add_title {
		1960	my ($self, $title) = @_;
		1961
		1962	$self->add_item ({
		1963	rend => { normal => "\x1b[38;5;11;44m", hover => "\x1b[38;5;11;44m", active => "\x1b[38;5;11;44m" },
		1964	text => $title,
		1965	activate => sub { },
		1966	});
		1967	}
		1968
		1969	=item $popup->add_separator ([$sepchr])
		1970
		1971	Creates a separator, optionally using the character given as C<$sepchr>.
		1972
		1973	=cut
		1974
		1975	sub add_separator {
		1976	my ($self, $sep) = @_;
		1977
		1978	$sep ||= "=";
		1979
		1980	$self->add_item ({
		1981	rend => { normal => "\x1b[0;30;47m", hover => "\x1b[0;30;47m", active => "\x1b[0;30;47m" },
		1982	text => "",
		1983	render => sub { $sep x $self->{term}->ncol },
		1984	activate => sub { },
		1985	});
		1986	}
		1987
		1988	=item $popup->add_button ($text, $cb)
		1989
		1990	Adds a clickable button to the popup. C<$cb> is called whenever it is
		1991	selected.
		1992
		1993	=cut
		1994
		1995	sub add_button {
		1996	my ($self, $text, $cb) = @_;
		1997
		1998	$self->add_item ({ type => "button", text => $text, activate => $cb});
		1999	}
		2000
		2001	=item $popup->add_toggle ($text, $initial_value, $cb)
		2002
		2003	Adds a toggle/checkbox item to the popup. The callback gets called
		2004	whenever it gets toggled, with a boolean indicating its new value as its
		2005	first argument.
		2006
		2007	=cut
		2008
		2009	sub add_toggle {
		2010	my ($self, $text, $value, $cb) = @_;
		2011
		2012	my $item; $item = {
		2013	type => "button",
		2014	text => " $text",
		2015	value => $value,
		2016	render => sub { ($_[0]{value} ? "* " : " ") . $text },
		2017	activate => sub { $cb->($_[1]{value} = !$_[1]{value}); },
		2018	};
		2019
		2020	$self->add_item ($item);
		2021	}
		2022
		2023	=item $popup->show
		2024
		2025	Displays the popup (which is initially hidden).
		2026
		2027	=cut
		2028
		2029	sub show {
		2030	my ($self) = @_;
		2031
		2032	local $urxvt::popup::self = $self;
		2033
		2034	my $env = $self->{term}->env;
		2035	# we can't hope to reproduce the locale algorithm, so nuke LC_ALL and set LC_CTYPE.
		2036	delete $env->{LC_ALL};
		2037	$env->{LC_CTYPE} = $self->{term}->locale;
		2038
		2039	my $term = urxvt::term->new (
		2040	$env, "popup",
		2041	"--perl-lib" => "", "--perl-ext-common" => "",
		2042	"-pty-fd" => -1, "-sl" => 0,
		2043	"-b" => 1, "-bd" => "grey80", "-bl", "-override-redirect",
		2044	"--transient-for" => $self->{term}->parent,
		2045	"-display" => $self->{term}->display_id,
		2046	"-pe" => "urxvt-popup",
		2047	) or die "unable to create popup window\n";
		2048
		2049	unless (delete $term->{urxvt_popup_init_done}) {
		2050	$term->ungrab;
		2051	$term->destroy;
		2052	die "unable to initialise popup window\n";
		2053	}
		2054	}
		2055
		2056	sub DESTROY {
		2057	my ($self) = @_;
		2058
		2059	delete $self->{term}{_destroy}{$self};
		2060	$self->{term}->ungrab;
		2061	}
		2062
		2063	=back
		2064
		2065	=cut
		2066
		2067	package urxvt::watcher;
391		2068
392	=head2 The C<urxvt::timer> Class	2069	=head2 The C<urxvt::timer> Class
393		2070
394	This class implements timer watchers/events. Time is represented as a	2071	This class implements timer watchers/events. Time is represented as a
395	fractional number of seconds since the epoch. Example:	2072	fractional number of seconds since the epoch. Example:
396		2073
397	# create a digital clock display in upper right corner	2074	$term->{overlay} = $term->overlay (-1, 0, 8, 1, urxvt::OVERLAY_RSTYLE, 0);
398	$term->{timer} = urxvt::timer	2075	$term->{timer} = urxvt::timer
399	->new	2076	->new
400	->start (urxvt::NOW)	2077	->interval (1)
401	->cb (sub {	2078	->cb (sub {
402	my ($timer) = @_;
403	my $time = $timer->at;
404	$timer->start ($time + 1);
405	$self->scr_overlay (-1, 0,	2079	$term->{overlay}->set (0, 0,
406	POSIX::strftime "%H:%M:%S", localtime $time);	2080	sprintf "%2d:%02d:%02d", (localtime urxvt::NOW)[2,1,0]);
407	});	2081	});
408		2082
409	=over 4	2083	=over 4
410		2084
411	=item $timer = new urxvt::timer	2085	=item $timer = new urxvt::timer
412		2086
413	Create a new timer object in stopped state.	2087	Create a new timer object in started state. It is scheduled to fire
		2088	immediately.
414		2089
415	=item $timer = $timer->cb (sub { my ($timer) = @_; ... })	2090	=item $timer = $timer->cb (sub { my ($timer) = @_; ... })
416		2091
417	Set the callback to be called when the timer triggers.	2092	Set the callback to be called when the timer triggers.
418		2093
419	=item $tstamp = $timer->at
420
421	Return the time this watcher will fire next.
422
423	=item $timer = $timer->set ($tstamp)	2094	=item $timer = $timer->set ($tstamp[, $interval])
424		2095
425	Set the time the event is generated to $tstamp.	2096	Set the time the event is generated to $tstamp (and optionally specifies a
		2097	new $interval).
		2098
		2099	=item $timer = $timer->interval ($interval)
		2100
		2101	By default (and when C<$interval> is C<0>), the timer will automatically
		2102	stop after it has fired once. If C<$interval> is non-zero, then the timer
		2103	is automatically rescheduled at the given intervals.
426		2104
427	=item $timer = $timer->start	2105	=item $timer = $timer->start
428		2106
429	Start the timer.	2107	Start the timer.
430		2108
431	=item $timer = $timer->start ($tstamp)	2109	=item $timer = $timer->start ($tstamp[, $interval])
432		2110
433	Set the event trigger time to C<$tstamp> and start the timer.	2111	Set the event trigger time to C<$tstamp> and start the timer. Optionally
		2112	also replaces the interval.
		2113
		2114	=item $timer = $timer->after ($delay[, $interval])
		2115
		2116	Like C<start>, but sets the expiry timer to c<urxvt::NOW + $delay>.
434		2117
435	=item $timer = $timer->stop	2118	=item $timer = $timer->stop
436		2119
437	Stop the timer.	2120	Stop the timer.
438		2121
…		…
444		2127
445	$term->{socket} = ...	2128	$term->{socket} = ...
446	$term->{iow} = urxvt::iow	2129	$term->{iow} = urxvt::iow
447	->new	2130	->new
448	->fd (fileno $term->{socket})	2131	->fd (fileno $term->{socket})
449	->events (1) # wait for read data	2132	->events (urxvt::EV_READ)
450	->start	2133	->start
451	->cb (sub {	2134	->cb (sub {
452	my ($iow, $revents) = @_;	2135	my ($iow, $revents) = @_;
453	# $revents must be 1 here, no need to check	2136	# $revents must be 1 here, no need to check
454	sysread $term->{socket}, my $buf, 8192	2137	sysread $term->{socket}, my $buf, 8192
…		…
467	Set the callback to be called when io events are triggered. C<$reventmask>	2150	Set the callback to be called when io events are triggered. C<$reventmask>
468	is a bitset as described in the C<events> method.	2151	is a bitset as described in the C<events> method.
469		2152
470	=item $iow = $iow->fd ($fd)	2153	=item $iow = $iow->fd ($fd)
471		2154
472	Set the filedescriptor (not handle) to watch.	2155	Set the file descriptor (not handle) to watch.
473		2156
474	=item $iow = $iow->events ($eventmask)	2157	=item $iow = $iow->events ($eventmask)
475		2158
476	Set the event mask to watch. Bit #0 (value C<1>) enables watching for read	2159	Set the event mask to watch. The only allowed values are
477	data, Bit #1 (value C<2>) enables watching for write data.	2160	C<urxvt::EV_READ> and C<urxvt::EV_WRITE>, which might be ORed
		2161	together, or C<urxvt::EV_NONE>.
478		2162
479	=item $iow = $iow->start	2163	=item $iow = $iow->start
480		2164
481	Start watching for requested events on the given handle.	2165	Start watching for requested events on the given handle.
482		2166
483	=item $iow = $iow->stop	2167	=item $iow = $iow->stop
484		2168
485	Stop watching for events on the given filehandle.	2169	Stop watching for events on the given file handle.
		2170
		2171	=back
		2172
		2173	=head2 The C<urxvt::iw> Class
		2174
		2175	This class implements idle watchers, that get called automatically when
		2176	the process is idle. They should return as fast as possible, after doing
		2177	some useful work.
		2178
		2179	=over 4
		2180
		2181	=item $iw = new urxvt::iw
		2182
		2183	Create a new idle watcher object in stopped state.
		2184
		2185	=item $iw = $iw->cb (sub { my ($iw) = @_; ... })
		2186
		2187	Set the callback to be called when the watcher triggers.
		2188
		2189	=item $timer = $timer->start
		2190
		2191	Start the watcher.
		2192
		2193	=item $timer = $timer->stop
		2194
		2195	Stop the watcher.
		2196
		2197	=back
		2198
		2199	=head2 The C<urxvt::pw> Class
		2200
		2201	This class implements process watchers. They create an event whenever a
		2202	process exits, after which they stop automatically.
		2203
		2204	my $pid = fork;
		2205	...
		2206	$term->{pw} = urxvt::pw
		2207	->new
		2208	->start ($pid)
		2209	->cb (sub {
		2210	my ($pw, $exit_status) = @_;
		2211	...
		2212	});
		2213
		2214	=over 4
		2215
		2216	=item $pw = new urxvt::pw
		2217
		2218	Create a new process watcher in stopped state.
		2219
		2220	=item $pw = $pw->cb (sub { my ($pw, $exit_status) = @_; ... })
		2221
		2222	Set the callback to be called when the timer triggers.
		2223
		2224	=item $pw = $timer->start ($pid)
		2225
		2226	Tells the watcher to start watching for process C<$pid>.
		2227
		2228	=item $pw = $pw->stop
		2229
		2230	Stop the watcher.
486		2231
487	=back	2232	=back
488		2233
489	=head1 ENVIRONMENT	2234	=head1 ENVIRONMENT
490		2235
…		…
493	This variable controls the verbosity level of the perl extension. Higher	2238	This variable controls the verbosity level of the perl extension. Higher
494	numbers indicate more verbose output.	2239	numbers indicate more verbose output.
495		2240
496	=over 4	2241	=over 4
497		2242
498	=item 0 - only fatal messages	2243	=item == 0 - fatal messages
499		2244
500	=item 3 - script loading and management	2245	=item >= 3 - script loading and management
501		2246
502	=item 10 - all events received	2247	=item >=10 - all called hooks
		2248
		2249	=item >=11 - hook return values
503		2250
504	=back	2251	=back
505		2252
506	=head1 AUTHOR	2253	=head1 AUTHOR
507		2254
…		…
509	http://software.schmorp.de/pkg/rxvt-unicode	2256	http://software.schmorp.de/pkg/rxvt-unicode
510		2257
511	=cut	2258	=cut
512		2259
513	1	2260	1
		2261
		2262	# vim: sw=3:

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