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3	<head>	4	<head>
4	<title>rxvtperl - rxvt-unicode's embedded perl interpreter</title>	5	<title>rxvtperl</title>
5	<link rev="made" href="mailto:perl-binary@plan9.de" />	6	<meta name="description" content="Pod documentation for rxvtperl" />
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8	<body style="background-color: white">	9	<meta name="created" content="Mon Jun 25 00:11:18 2007" />
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10	<p><a name="__index__"></a></p>	11	<link rel="stylesheet" href="http://res.tst.eu/pod.css"/></head>
		12	<body>
		13	<div class="pod">
11	<!-- INDEX BEGIN -->	14	<!-- INDEX START -->
		15	<h3 id="TOP">Index</h3>
12		16
13	<ul>
14
15	<li><a href="#name">NAME</a></li>	17	<ul><li><a href="#NAME">NAME</a></li>
16	<li><a href="#synopsis">SYNOPSIS</a></li>	18	<li><a href="#SYNOPSIS">SYNOPSIS</a></li>
17	<li><a href="#description">DESCRIPTION</a></li>	19	<li><a href="#DESCRIPTION">DESCRIPTION</a></li>
18	<ul>	20	<li><a href="#PREPACKAGED_EXTENSIONS">PREPACKAGED EXTENSIONS</a></li>
19		21	<li><a href="#API_DOCUMENTATION">API DOCUMENTATION</a>
20	<li><a href="#general_api_considerations">General API Considerations</a></li>	22	<ul><li><a href="#General_API_Considerations">General API Considerations</a></li>
		23	<li><a href="#Extension_Objects">Extension Objects</a></li>
21	<li><a href="#hooks">Hooks</a></li>	24	<li><a href="#Hooks">Hooks</a></li>
		25	<li><a href="#Variables_in_the_code_urxvt_code_Pac">Variables in the <code>urxvt</code> Package</a></li>
22	<li><a href="#functions_in_the_urxvt_package">Functions in the <code>urxvt</code> Package</a></li>	26	<li><a href="#Functions_in_the_code_urxvt_code_Pac">Functions in the <code>urxvt</code> Package</a></li>
		27	<li><a href="#RENDITION">RENDITION</a></li>
		28	<li><a href="#The_code_urxvt_anyevent_code_Class">The <code>urxvt::anyevent</code> Class</a></li>
23	<li><a href="#the_urxvt__term_class">The <code>urxvt::term</code> Class</a></li>	29	<li><a href="#The_code_urxvt_term_code_Class">The <code>urxvt::term</code> Class</a></li>
		30	<li><a href="#The_code_urxvt_popup_code_Class">The <code>urxvt::popup</code> Class</a></li>
24	<li><a href="#the_urxvt__timer_class">The <code>urxvt::timer</code> Class</a></li>	31	<li><a href="#The_code_urxvt_timer_code_Class">The <code>urxvt::timer</code> Class</a></li>
25	<li><a href="#the_urxvt__iow_class">The <code>urxvt::iow</code> Class</a></li>	32	<li><a href="#The_code_urxvt_iow_code_Class">The <code>urxvt::iow</code> Class</a></li>
26	</ul>	33	<li><a href="#The_code_urxvt_iw_code_Class">The <code>urxvt::iw</code> Class</a></li>
27		34	<li><a href="#The_code_urxvt_pw_code_Class">The <code>urxvt::pw</code> Class</a></li>
28	<li><a href="#environment">ENVIRONMENT</a></li>
29	<ul>
30
31	<li><a href="#urxvt_perl_verbosity">URXVT_PERL_VERBOSITY</a></li>
32	</ul>
33
34	<li><a href="#author">AUTHOR</a></li>
35	</ul>	35	</ul>
		36	</li>
		37	<li><a href="#ENVIRONMENT">ENVIRONMENT</a>
		38	<ul><li><a href="#URXVT_PERL_VERBOSITY">URXVT_PERL_VERBOSITY</a></li>
		39	</ul>
		40	</li>
		41	<li><a href="#AUTHOR">AUTHOR</a>
		42	</li>
		43	</ul><hr />
36	<!-- INDEX END -->	44	<!-- INDEX END -->
37		45
38	<hr />	46	<h1 id="NAME">NAME</h1><p><a href="#TOP" class="toplink">Top</a></p>
39	<p>	47	<div id="NAME_CONTENT">
40	</p>
41	<h1><a name="name">NAME</a></h1>
42	<p>rxvtperl - rxvt-unicode's embedded perl interpreter</p>	48	<p>rxvtperl - rxvt-unicode's embedded perl interpreter</p>
43	<p>	49
44	</p>	50	</div>
45	<hr />	51	<h1 id="SYNOPSIS">SYNOPSIS</h1><p><a href="#TOP" class="toplink">Top</a></p>
46	<h1><a name="synopsis">SYNOPSIS</a></h1>	52	<div id="SYNOPSIS_CONTENT">
47	<pre>
48	# create a file grab_test in $HOME:</pre>	53	<pre> # create a file grab_test in $HOME:
49	<pre>	54
50	sub on_sel_grab {	55	sub on_sel_grab {
51	warn "you selected ", $_[0]->selection;	56	warn "you selected ", $_[0]->selection;
52	()	57	()
53	}</pre>	58	}
54	<pre>	59
55	# start a rxvt using it:</pre>	60	# start a rxvt using it:
56	<pre>	61
57	rxvt --perl-lib $HOME -pe grab_test</pre>	62	rxvt --perl-lib $HOME -pe grab_test
58	<p>	63
59	</p>	64	</pre>
60	<hr />	65
61	<h1><a name="description">DESCRIPTION</a></h1>	66	</div>
		67	<h1 id="DESCRIPTION">DESCRIPTION</h1><p><a href="#TOP" class="toplink">Top</a></p>
		68	<div id="DESCRIPTION_CONTENT">
62	<p>Everytime a terminal object gets created, scripts specified via the	69	<p>Every time a terminal object gets created, extension scripts specified via
63	<code>perl</code> resource are loaded and associated with it.</p>	70	the <code>perl</code> resource are loaded and associated with it.</p>
64	<p>Scripts are compiled in a 'use strict' and 'use utf8' environment, and	71	<p>Scripts are compiled in a 'use strict' and 'use utf8' environment, and
65	thus must be encoded as UTF-8.</p>	72	thus must be encoded as UTF-8.</p>
66	<p>Each script will only ever be loaded once, even in rxvtd, where	73	<p>Each script will only ever be loaded once, even in rxvtd, where
67	scripts will be shared (But not enabled) for all terminals.</p>	74	scripts will be shared (but not enabled) for all terminals.</p>
68	<p>	75	<p>You can disable the embedded perl interpreter by setting both "perl-ext"
		76	and "perl-ext-common" resources to the empty string.</p>
		77
		78	</div>
		79	<h1 id="PREPACKAGED_EXTENSIONS">PREPACKAGED EXTENSIONS</h1><p><a href="#TOP" class="toplink">Top</a></p>
		80	<div id="PREPACKAGED_EXTENSIONS_CONTENT">
		81	<p>This section describes the extensions delivered with this release. You can
		82	find them in <cite>/opt/rxvt/lib/urxvt/perl/</cite>.</p>
		83	<p>You can activate them like this:</p>
		84	<pre> rxvt -pe <extensionname>
		85
69	</p>	86	</pre>
		87	<p>Or by adding them to the resource for extensions loaded by default:</p>
		88	<pre> URxvt.perl-ext-common: default,automove-background,selection-autotransform
		89
		90	</pre>
		91	<dl>
		92	<dt>selection (enabled by default)</dt>
		93	<dd>
		94	<p>(More) intelligent selection. This extension tries to be more intelligent
		95	when the user extends selections (double-click and further clicks). Right
		96	now, it tries to select words, urls and complete shell-quoted
		97	arguments, which is very convenient, too, if your <cite>ls</cite> supports
		98	<code>--quoting-style=shell</code>.</p>
		99	<p>A double-click usually selects the word under the cursor, further clicks
		100	will enlarge the selection.</p>
		101	<p>The selection works by trying to match a number of regexes and displaying
		102	them in increasing order of length. You can add your own regexes by
		103	specifying resources of the form:</p>
		104	<pre> URxvt.selection.pattern-0: perl-regex
		105	URxvt.selection.pattern-1: perl-regex
		106	...
		107
		108	</pre>
		109	<p>The index number (0, 1...) must not have any holes, and each regex must
		110	contain at least one pair of capturing parentheses, which will be used for
		111	the match. For example, the following adds a regex that matches everything
		112	between two vertical bars:</p>
		113	<pre> URxvt.selection.pattern-0: \\\|([^\|]+)\\\|
		114
		115	</pre>
		116	<p>Another example: Programs I use often output "absolute path: " at the
		117	beginning of a line when they process multiple files. The following
		118	pattern matches the filename (note, there is a single space at the very
		119	end):</p>
		120	<pre> URxvt.selection.pattern-0: ^(/[^:]+):\
		121
		122	</pre>
		123	<p>You can look at the source of the selection extension to see more
		124	interesting uses, such as parsing a line from beginning to end.</p>
		125	<p>This extension also offers following bindable keyboard commands:</p>
		126	<p>
		127	<dl>
		128	<dt>rot13</dt>
		129	<dd>
		130	<p>Rot-13 the selection when activated. Used via keyboard trigger:</p>
		131	<pre> URxvt.keysym.C-M-r: perl:selection:rot13
		132
		133	</pre>
		134	</dd>
		135	</dl>
		136	</p>
		137	</dd>
		138	<dt>option-popup (enabled by default)</dt>
		139	<dd>
		140	<p>Binds a popup menu to Ctrl-Button2 that lets you toggle (some) options at
		141	runtime.</p>
		142	<p>Other extensions can extend this popup menu by pushing a code reference
		143	onto <code>@{ $term-</code>{option_popup_hook} }>, which gets called whenever the
		144	popup is being displayed.</p>
		145	<p>It's sole argument is the popup menu, which can be modified. It should
		146	either return nothing or a string, the initial boolean value and a code
		147	reference. The string will be used as button text and the code reference
		148	will be called when the toggle changes, with the new boolean value as
		149	first argument.</p>
		150	<p>The following will add an entry <code>myoption</code> that changes
		151	<code>$self-</code>{myoption}>:</p>
		152	<pre> push @{ $self->{term}{option_popup_hook} }, sub {
		153	("my option" => $myoption, sub { $self->{myoption} = $_[0] })
		154	};
		155
		156	</pre>
		157	</dd>
		158	<dt>selection-popup (enabled by default)</dt>
		159	<dd>
		160	<p>Binds a popup menu to Ctrl-Button3 that lets you convert the selection
		161	text into various other formats/action (such as uri unescaping, perl
		162	evaluation, web-browser starting etc.), depending on content.</p>
		163	<p>Other extensions can extend this popup menu by pushing a code reference
		164	onto <code>@{ $term-</code>{selection_popup_hook} }>, which gets called whenever the
		165	popup is being displayed.</p>
		166	<p>It's sole argument is the popup menu, which can be modified. The selection
		167	is in <code>$_</code>, which can be used to decide whether to add something or not.
		168	It should either return nothing or a string and a code reference. The
		169	string will be used as button text and the code reference will be called
		170	when the button gets activated and should transform <code>$_</code>.</p>
		171	<p>The following will add an entry <code>a to b</code> that transforms all <code>a</code>s in
		172	the selection to <code>b</code>s, but only if the selection currently contains any
		173	<code>a</code>s:</p>
		174	<pre> push @{ $self->{term}{selection_popup_hook} }, sub {
		175	/a/ ? ("a to be" => sub { s/a/b/g }
		176	: ()
		177	};
		178
		179	</pre>
		180	</dd>
		181	<dt>searchable-scrollback<hotkey> (enabled by default)</dt>
		182	<dd>
		183	<p>Adds regex search functionality to the scrollback buffer, triggered
		184	by a hotkey (default: <code>M-s</code>). While in search mode, normal terminal
		185	input/output is suspended and a regex is displayed at the bottom of the
		186	screen.</p>
		187	<p>Inputting characters appends them to the regex and continues incremental
		188	search. <code>BackSpace</code> removes a character from the regex, <code>Up</code> and <code>Down</code>
		189	search upwards/downwards in the scrollback buffer, <code>End</code> jumps to the
		190	bottom. <code>Escape</code> leaves search mode and returns to the point where search
		191	was started, while <code>Enter</code> or <code>Return</code> stay at the current position and
		192	additionally stores the first match in the current line into the primary
		193	selection.</p>
		194	<p>The regex defaults to "(?i)", resulting in a case-insensitive search. To
		195	get a case-sensitive search you can delete this prefix using <code>BackSpace</code>
		196	or simply use an uppercase character which removes the "(?i)" prefix.</p>
		197	<p>See <cite>perlre</cite> for more info about perl regular expression syntax.</p>
		198	</dd>
		199	<dt>readline (enabled by default)</dt>
		200	<dd>
		201	<p>A support package that tries to make editing with readline easier. At
		202	the moment, it reacts to clicking shift-left mouse button by trying to
		203	move the text cursor to this position. It does so by generating as many
		204	cursor-left or cursor-right keypresses as required (the this only works
		205	for programs that correctly support wide characters).</p>
		206	<p>To avoid too many false positives, this is only done when:</p>
		207	<p>
		208	<dl>
		209	<dt>- the tty is in ICANON state.</dt>
		210	<dt>- the text cursor is visible.</dt>
		211	<dt>- the primary screen is currently being displayed.</dt>
		212	<dt>- the mouse is on the same (multi-row-) line as the text cursor.</dt>
		213	</dl>
		214	</p>
		215	<p>The normal selection mechanism isn't disabled, so quick successive clicks
		216	might interfere with selection creation in harmless ways.</p>
		217	</dd>
		218	<dt>selection-autotransform</dt>
		219	<dd>
		220	<p>This selection allows you to do automatic transforms on a selection
		221	whenever a selection is made.</p>
		222	<p>It works by specifying perl snippets (most useful is a single <code>s///</code>
		223	operator) that modify <code>$_</code> as resources:</p>
		224	<pre> URxvt.selection-autotransform.0: transform
		225	URxvt.selection-autotransform.1: transform
		226	...
		227
		228	</pre>
		229	<p>For example, the following will transform selections of the form
		230	<code>filename:number</code>, often seen in compiler messages, into <code>vi +$filename
		231	$word</code>:</p>
		232	<pre> URxvt.selection-autotransform.0: s/^([^:[:space:]]+):(\\d+):?$/vi +$2 \\Q$1\\E\\x0d/
		233
		234	</pre>
		235	<p>And this example matches the same,but replaces it with vi-commands you can
		236	paste directly into your (vi :) editor:</p>
		237	<pre> URxvt.selection-autotransform.0: s/^([^:[:space:]]+(\\d+):?$/:e \\Q$1\\E\\x0d:$2\\x0d/
		238
		239	</pre>
		240	<p>Of course, this can be modified to suit your needs and your editor :)</p>
		241	<p>To expand the example above to typical perl error messages ("XXX at
		242	FILENAME line YYY."), you need a slightly more elaborate solution:</p>
		243	<pre> URxvt.selection.pattern-0: ( at .*? line \\d+[,.])
		244	URxvt.selection-autotransform.0: s/^ at (.*?) line (\\d+)[,.]$/:e \\Q$1\E\\x0d:$2\\x0d/
		245
		246	</pre>
		247	<p>The first line tells the selection code to treat the unchanging part of
		248	every error message as a selection pattern, and the second line transforms
		249	the message into vi commands to load the file.</p>
		250	</dd>
		251	<dt>tabbed</dt>
		252	<dd>
		253	<p>This transforms the terminal into a tabbar with additional terminals, that
		254	is, it implements what is commonly referred to as "tabbed terminal". The topmost line
		255	displays a "[NEW]" button, which, when clicked, will add a new tab, followed by one
		256	button per tab.</p>
		257	<p>Clicking a button will activate that tab. Pressing <strong>Shift-Left</strong> and
		258	<strong>Shift-Right</strong> will switch to the tab left or right of the current one,
		259	while <strong>Shift-Down</strong> creates a new tab.</p>
		260	<p>The tabbar itself can be configured similarly to a normal terminal, but
		261	with a resource class of <code>URxvt.tabbed</code>. In addition, it supports the
		262	following four resources (shown with defaults):</p>
		263	<pre> URxvt.tabbed.tabbar-fg: <colour-index, default 3>
		264	URxvt.tabbed.tabbar-bg: <colour-index, default 0>
		265	URxvt.tabbed.tab-fg: <colour-index, default 0>
		266	URxvt.tabbed.tab-bg: <colour-index, default 1>
		267
		268	</pre>
		269	<p>See <i>COLOR AND GRAPHICS</i> in the rxvt(1) manpage for valid
		270	indices.</p>
		271	</dd>
		272	<dt>matcher</dt>
		273	<dd>
		274	<p>Uses per-line display filtering (<code>on_line_update</code>) to underline text
		275	matching a certain pattern and make it clickable. When clicked with the
		276	mouse button specified in the <code>matcher.button</code> resource (default 2, or
		277	middle), the program specified in the <code>matcher.launcher</code> resource
		278	(default, the <code>urlLauncher</code> resource, <code>sensible-browser</code>) will be started
		279	with the matched text as first argument. The default configuration is
		280	suitable for matching URLs and launching a web browser, like the
		281	former "mark-urls" extension.</p>
		282	<p>The default pattern to match URLs can be overridden with the
		283	<code>matcher.pattern.0</code> resource, and additional patterns can be specified
		284	with numbered patterns, in a manner similar to the "selection" extension.
		285	The launcher can also be overridden on a per-pattern basis.</p>
		286	<p>It is possible to activate the most recently seen match from the keyboard.
		287	Simply bind a keysym to "perl:matcher" as seen in the example below.</p>
		288	<p>Example configuration:</p>
		289	<pre> URxvt.perl-ext: default,matcher
		290	URxvt.urlLauncher: sensible-browser
		291	URxvt.keysym.C-Delete: perl:matcher
		292	URxvt.matcher.button: 1
		293	URxvt.matcher.pattern.1: \\bwww\\.[\\w-]+\\.[\\w./?&@#-]*[\\w/-]
		294	URxvt.matcher.pattern.2: \\B(/\\S+?):(\\d+)(?=:\|$)
		295	URxvt.matcher.launcher.2: gvim +$2 $1
		296
		297	</pre>
		298	</dd>
		299	<dt>xim-onthespot</dt>
		300	<dd>
		301	<p>This (experimental) perl extension implements OnTheSpot editing. It does
		302	not work perfectly, and some input methods don't seem to work well with
		303	OnTheSpot editing in general, but it seems to work at leats for SCIM and
		304	kinput2.</p>
		305	<p>You enable it by specifying this extension and a preedit style of
		306	<code>OnTheSpot</code>, i.e.:</p>
		307	<pre> rxvt -pt OnTheSpot -pe xim-onthespot
		308
		309	</pre>
		310	</dd>
		311	<dt>kuake<hotkey></dt>
		312	<dd>
		313	<p>A very primitive quake-console-like extension. It was inspired by a
		314	description of how the programs <code>kuake</code> and <code>yakuake</code> work: Whenever the
		315	user presses a global accelerator key (by default <code>F10</code>), the terminal
		316	will show or hide itself. Another press of the accelerator key will hide
		317	or show it again.</p>
		318	<p>Initially, the window will not be shown when using this extension.</p>
		319	<p>This is useful if you need a single terminal thats not using any desktop
		320	space most of the time but is quickly available at the press of a key.</p>
		321	<p>The accelerator key is grabbed regardless of any modifiers, so this
		322	extension will actually grab a physical key just for this function.</p>
		323	<p>If you want a quake-like animation, tell your window manager to do so
		324	(fvwm can do it).</p>
		325	</dd>
		326	<dt>automove-background</dt>
		327	<dd>
		328	<p>This is basically a very small extension that dynamically changes the
		329	background pixmap offset to the window position, in effect creating the
		330	same effect as pseudo transparency with a custom pixmap. No scaling is
		331	supported in this mode. Example:</p>
		332	<pre> rxvt -pixmap background.xpm -pe automove-background
		333
		334	</pre>
		335	<p><a href="http://wiki.archlinux.org/index.php/Perl_Background_Rotation/Extensions">http://wiki.archlinux.org/index.php/Perl_Background_Rotation/Extensions</a>
		336	shows how this extension can be used to implement an automatically blurred
		337	transparent background.</p>
		338	</dd>
		339	<dt>block-graphics-to-ascii</dt>
		340	<dd>
		341	<p>A not very useful example of filtering all text output to the terminal
		342	by replacing all line-drawing characters (U+2500 .. U+259F) by a
		343	similar-looking ascii character.</p>
		344	</dd>
		345	<dt>digital-clock</dt>
		346	<dd>
		347	<p>Displays a digital clock using the built-in overlay.</p>
		348	</dd>
		349	<dt>remote-clipboard</dt>
		350	<dd>
		351	<p>Somewhat of a misnomer, this extension adds two menu entries to the
		352	selection popup that allows one ti run external commands to store the
		353	selection somewhere and fetch it again.</p>
		354	<p>We use it to implement a "distributed selection mechanism", which just
		355	means that one command uploads the file to a remote server, and another
		356	reads it.</p>
		357	<p>The commands can be set using the <code>URxvt.remote-selection.store</code> and
		358	<code>URxvt.remote-selection.fetch</code> resources. The first should read the
		359	selection to store from STDIN (always in UTF-8), the second should provide
		360	the selection data on STDOUT (also in UTF-8).</p>
		361	<p>The defaults (which are likely useless to you) use rsh and cat:</p>
		362	<pre> URxvt.remote-selection.store: rsh ruth 'cat >/tmp/distributed-selection'
		363	URxvt.remote-selection.fetch: rsh ruth 'cat /tmp/distributed-selection'
		364
		365	</pre>
		366	</dd>
		367	<dt>selection-pastebin</dt>
		368	<dd>
		369	<p>This is a little rarely useful extension that Uploads the selection as
		370	textfile to a remote site (or does other things). (The implementation is
		371	not currently secure for use in a multiuser environment as it writes to
		372	<cite>/tmp</cite> directly.).</p>
		373	<p>It listens to the <code>selection-pastebin:remote-pastebin</code> keyboard command,
		374	i.e.</p>
		375	<pre> URxvt.keysym.C-M-e: perl:selection-pastebin:remote-pastebin
		376
		377	</pre>
		378	<p>Pressing this combination runs a command with <code>%</code> replaced by the name of
		379	the textfile. This command can be set via a resource:</p>
		380	<pre> URxvt.selection-pastebin.cmd: rsync -apP % ruth:/var/www/www.ta-sa.org/files/txt/.
		381
		382	</pre>
		383	<p>And the default is likely not useful to anybody but the few people around
		384	here :)</p>
		385	<p>The name of the textfile is the hex encoded md5 sum of the selection, so
		386	the same content should lead to the same filename.</p>
		387	<p>After a successful upload the selection will be replaced by the text given
		388	in the <code>selection-pastebin-url</code> resource (again, the % is the placeholder
		389	for the filename):</p>
		390	<pre> URxvt.selection-pastebin.url: http://www.ta-sa.org/files/txt/%
		391
		392	</pre>
		393	<p><i>Note to xrdb users:</i> xrdb uses the C preprocessor, which might interpret
		394	the double <code>/</code> characters as comment start. Use <code>\057\057</code> instead,
		395	which works regardless of wether xrdb is used to parse the resource file
		396	or not.</p>
		397	</dd>
		398	<dt>example-refresh-hooks</dt>
		399	<dd>
		400	<p>Displays a very simple digital clock in the upper right corner of the
		401	window. Illustrates overwriting the refresh callbacks to create your own
		402	overlays or changes.</p>
		403	</dd>
		404	</dl>
		405
		406	</div>
		407	<h1 id="API_DOCUMENTATION">API DOCUMENTATION</h1><p><a href="#TOP" class="toplink">Top</a></p>
		408	<div id="API_DOCUMENTATION_CONTENT">
		409
		410	</div>
70	<h2><a name="general_api_considerations">General API Considerations</a></h2>	411	<h2 id="General_API_Considerations">General API Considerations</h2>
		412	<div id="General_API_Considerations_CONTENT">
71	<p>All objects (such as terminals, time watchers etc.) are typical	413	<p>All objects (such as terminals, time watchers etc.) are typical
72	reference-to-hash objects. The hash can be used to store anything you	414	reference-to-hash objects. The hash can be used to store anything you
73	like. All members starting with an underscore (such as <code>_ptr</code> or	415	like. All members starting with an underscore (such as <code>_ptr</code> or
74	<code>_hook</code>) are reserved for internal uses and must not be accessed or	416	<code>_hook</code>) are reserved for internal uses and <strong>MUST NOT</strong> be accessed or
75	modified).</p>	417	modified).</p>
76	<p>When objects are destroyed on the C++ side, the perl object hashes are	418	<p>When objects are destroyed on the C++ side, the perl object hashes are
77	emptied, so its best to store related objects such as time watchers and	419	emptied, so its best to store related objects such as time watchers and
78	the like inside the terminal object so they get destroyed as soon as the	420	the like inside the terminal object so they get destroyed as soon as the
79	terminal is destroyed.</p>	421	terminal is destroyed.</p>
80	<p>	422	<p>Argument names also often indicate the type of a parameter. Here are some
81	</p>	423	hints on what they mean:</p>
82	<h2><a name="hooks">Hooks</a></h2>
83	<p>The following subroutines can be declared in loaded scripts, and will be called
84	whenever the relevant event happens.</p>
85	<p>All of them must return a boolean value. If it is true, then the event
86	counts as being <em>consumed</em>, and the invocation of other hooks is skipped,
87	and the relevant action might not be carried out by the C++ code.</p>
88	<p>When in doubt, return a false value (preferably <code>()</code>).</p>
89	<dl>	424	<dl>
90	<dt><strong><a name="item_on_init__24term">on_init $term</a></strong><br />	425	<dt>$text</dt>
91	</dt>
92	<dd>	426	<dd>
		427	<p>Rxvt-unicodes special way of encoding text, where one "unicode" character
		428	always represents one screen cell. See <cite>ROW_t</cite> for a discussion of this format.</p>
		429	</dd>
		430	<dt>$string</dt>
		431	<dd>
		432	<p>A perl text string, with an emphasis on <i>text</i>. It can store all unicode
		433	characters and is to be distinguished with text encoded in a specific
		434	encoding (often locale-specific) and binary data.</p>
		435	</dd>
		436	<dt>$octets</dt>
		437	<dd>
		438	<p>Either binary data or - more common - a text string encoded in a
		439	locale-specific way.</p>
		440	</dd>
		441	</dl>
		442
		443	</div>
		444	<h2 id="Extension_Objects">Extension Objects</h2>
		445	<div id="Extension_Objects_CONTENT">
		446	<p>Every perl extension is a perl class. A separate perl object is created
		447	for each terminal, and each terminal has its own set of extenion objects,
		448	which are passed as the first parameter to hooks. So extensions can use
		449	their <code>$self</code> object without having to think about clashes with other
		450	extensions or other terminals, with the exception of methods and members
		451	that begin with an underscore character <code>_</code>: these are reserved for
		452	internal use.</p>
		453	<p>Although it isn't a <code>urxvt::term</code> object, you can call all methods of the
		454	<code>urxvt::term</code> class on this object.</p>
		455	<p>It has the following methods and data members:</p>
		456	<dl>
		457	<dt>$urxvt_term = $self->{term}</dt>
		458	<dd>
		459	<p>Returns the <code>urxvt::term</code> object associated with this instance of the
		460	extension. This member <i>must not</i> be changed in any way.</p>
		461	</dd>
		462	<dt>$self->enable ($hook_name => $cb, [$hook_name => $cb..])</dt>
		463	<dd>
		464	<p>Dynamically enable the given hooks (named without the <code>on_</code> prefix) for
		465	this extension, replacing any previous hook. This is useful when you want
		466	to overwrite time-critical hooks only temporarily.</p>
		467	</dd>
		468	<dt>$self->disable ($hook_name[, $hook_name..])</dt>
		469	<dd>
		470	<p>Dynamically disable the given hooks.</p>
		471	</dd>
		472	</dl>
		473
		474	</div>
		475	<h2 id="Hooks">Hooks</h2>
		476	<div id="Hooks_CONTENT">
		477	<p>The following subroutines can be declared in extension files, and will be
		478	called whenever the relevant event happens.</p>
		479	<p>The first argument passed to them is an extension object as described in
		480	the in the <code>Extension Objects</code> section.</p>
		481	<p><strong>All</strong> of these hooks must return a boolean value. If any of the called
		482	hooks returns true, then the event counts as being <i>consumed</i>, and the
		483	relevant action might not be carried out by the C++ code.</p>
		484	<p><i>When in doubt, return a false value (preferably <code>()</code>).</i></p>
		485	<dl>
		486	<dt>on_init $term</dt>
		487	<dd>
93	Called after a new terminal object has been initialized, but before	488	<p>Called after a new terminal object has been initialized, but before
94	windows are created or the command gets run.	489	windows are created or the command gets run. Most methods are unsafe to
		490	call or deliver senseless data, as terminal size and other characteristics
		491	have not yet been determined. You can safely query and change resources
		492	and options, though. For many purposes the <code>on_start</code> hook is a better
		493	place.</p>
95	</dd>	494	</dd>
96	<p></p>	495	<dt>on_start $term</dt>
97	<dt><strong><a name="item_on_reset__24term">on_reset $term</a></strong><br />
98	</dt>
99	<dd>	496	<dd>
		497	<p>Called at the very end of initialisation of a new terminal, just before
		498	trying to map (display) the toplevel and returning to the main loop.</p>
		499	</dd>
		500	<dt>on_destroy $term</dt>
		501	<dd>
		502	<p>Called whenever something tries to destroy terminal, when the terminal is
		503	still fully functional (not for long, though).</p>
		504	</dd>
		505	<dt>on_reset $term</dt>
		506	<dd>
100	Called after the screen is ``reset'' for any reason, such as resizing or	507	<p>Called after the screen is "reset" for any reason, such as resizing or
101	control sequences. Here is where you can react on changes to size-related	508	control sequences. Here is where you can react on changes to size-related
102	variables.	509	variables.</p>
103	</dd>	510	</dd>
104	<p></p>	511	<dt>on_child_start $term, $pid</dt>
105	<dt><strong><a name="item_on_start__24term">on_start $term</a></strong><br />
106	</dt>
107	<dd>	512	<dd>
108	Called at the very end of initialisation of a new terminal, just before	513	<p>Called just after the child process has been <code>fork</code>ed.</p>
109	returning to the mainloop.
110	</dd>	514	</dd>
111	<p></p>	515	<dt>on_child_exit $term, $status</dt>
112	<dt><strong><a name="item_on_sel_make__24term_2c__24eventtime">on_sel_make $term, $eventtime</a></strong><br />
113	</dt>
114	<dd>	516	<dd>
		517	<p>Called just after the child process has exited. <code>$status</code> is the status
		518	from <code>waitpid</code>.</p>
		519	</dd>
		520	<dt>on_sel_make $term, $eventtime</dt>
		521	<dd>
115	Called whenever a selection has been made by the user, but before the	522	<p>Called whenever a selection has been made by the user, but before the
116	selection text is copied, so changes to the beginning, end or type of the	523	selection text is copied, so changes to the beginning, end or type of the
117	selection will be honored.	524	selection will be honored.</p>
118	</dd>
119	<dd>
120	<p>Returning a true value aborts selection making by urxvt, in which case you	525	<p>Returning a true value aborts selection making by urxvt, in which case you
121	have to make a selection yourself by calling <a href="#item_selection_grab"><code>$term->selection_grab</code></a>.</p>	526	have to make a selection yourself by calling <code>$term->selection_grab</code>.</p>
122	</dd>	527	</dd>
123	<p></p>	528	<dt>on_sel_grab $term, $eventtime</dt>
124	<dt><strong><a name="item_on_sel_grab__24term_2c__24eventtime">on_sel_grab $term, $eventtime</a></strong><br />
125	</dt>
126	<dd>	529	<dd>
127	Called whenever a selection has been copied, but before the selection is	530	<p>Called whenever a selection has been copied, but before the selection is
128	requested from the server. The selection text can be queried and changed	531	requested from the server. The selection text can be queried and changed
129	by calling <a href="#item_selection"><code>$term->selection</code></a>.	532	by calling <code>$term->selection</code>.</p>
130	</dd>
131	<dd>
132	<p>Returning a true value aborts selection grabbing. It will still be hilighted.</p>	533	<p>Returning a true value aborts selection grabbing. It will still be highlighted.</p>
133	</dd>	534	</dd>
134	<p></p>	535	<dt>on_sel_extend $term</dt>
135	<dt><strong><a name="item_on_focus_in__24term">on_focus_in $term</a></strong><br />
136	</dt>
137	<dd>	536	<dd>
138	Called whenever the window gets the keyboard focus, before urxvt does	537	<p>Called whenever the user tries to extend the selection (e.g. with a double
139	focus in processing.	538	click) and is either supposed to return false (normal operation), or
		539	should extend the selection itself and return true to suppress the built-in
		540	processing. This can happen multiple times, as long as the callback
		541	returns true, it will be called on every further click by the user and is
		542	supposed to enlarge the selection more and more, if possible.</p>
		543	<p>See the <cite>selection</cite> example extension.</p>
140	</dd>	544	</dd>
141	<p></p>	545	<dt>on_view_change $term, $offset</dt>
142	<dt><strong><a name="item_on_focus_out__24term">on_focus_out $term</a></strong><br />
143	</dt>
144	<dd>	546	<dd>
145	Called wheneever the window loses keyboard focus, before urxvt does focus
146	out processing.
147	</dd>
148	<p></p>
149	<dt><strong><a name="item_on_view_change__24term_2c__24offset">on_view_change $term, $offset</a></strong><br />
150	</dt>
151	<dd>
152	Called whenever the view offset changes, i..e the user or program	547	<p>Called whenever the view offset changes, i.e. the user or program
153	scrolls. Offset <code>0</code> means display the normal terminal, positive values	548	scrolls. Offset <code>0</code> means display the normal terminal, positive values
154	show this many lines of scrollback.	549	show this many lines of scrollback.</p>
155	</dd>	550	</dd>
156	<p></p>	551	<dt>on_scroll_back $term, $lines, $saved</dt>
157	<dt><strong><a name="item_on_scroll_back__24term_2c__24lines_2c__24saved">on_scroll_back $term, $lines, $saved</a></strong><br />
158	</dt>
159	<dd>	552	<dd>
160	Called whenever lines scroll out of the terminal area into the scrollback	553	<p>Called whenever lines scroll out of the terminal area into the scrollback
161	buffer. <code>$lines</code> is the number of lines scrolled out and may be larger	554	buffer. <code>$lines</code> is the number of lines scrolled out and may be larger
162	than the scroll back buffer or the terminal.	555	than the scroll back buffer or the terminal.</p>
163	</dd>
164	<dd>
165	<p>It is called before lines are scrolled out (so rows 0 .. min ($lines - 1,	556	<p>It is called before lines are scrolled out (so rows 0 .. min ($lines - 1,
166	$nrow - 1) represent the lines to be scrolled out). <code>$saved</code> is the total	557	$nrow - 1) represent the lines to be scrolled out). <code>$saved</code> is the total
167	number of lines that will be in the scrollback buffer.</p>	558	number of lines that will be in the scrollback buffer.</p>
168	</dd>	559	</dd>
169	<p></p>	560	<dt>on_osc_seq $term, $op, $args</dt>
170	<dt><strong><a name="item_on_tty_activity__24term__2anyi_2a">on_tty_activity $term NYI</a></strong><br />
171	</dt>
172	<dd>	561	<dd>
173	Called whenever the <code>program(s)</code> running in the urxvt window send output.	562	<p>Called on every OSC sequence and can be used to suppress it or modify its
		563	behaviour. The default should be to return an empty list. A true value
		564	suppresses execution of the request completely. Make sure you don't get
		565	confused by recursive invocations when you output an osc sequence within
		566	this callback.</p>
		567	<p><code>on_osc_seq_perl</code> should be used for new behaviour.</p>
174	</dd>	568	</dd>
175	<p></p>	569	<dt>on_osc_seq_perl $term, $string</dt>
176	<dt><strong><a name="item_on_refresh_begin__24term">on_refresh_begin $term</a></strong><br />
177	</dt>
178	<dd>	570	<dd>
		571	<p>Called whenever the <strong>ESC ] 777 ; string ST</strong> command sequence (OSC =
		572	operating system command) is processed. Cursor position and other state
		573	information is up-to-date when this happens. For interoperability, the
		574	string should start with the extension name and a colon, to distinguish
		575	it from commands for other extensions, and this might be enforced in the
		576	future.</p>
		577	<p>Be careful not ever to trust (in a security sense) the data you receive,
		578	as its source can not easily be controlled (e-mail content, messages from
		579	other users on the same system etc.).</p>
		580	</dd>
		581	<dt>on_add_lines $term, $string</dt>
		582	<dd>
		583	<p>Called whenever text is about to be output, with the text as argument. You
		584	can filter/change and output the text yourself by returning a true value
		585	and calling <code>$term->scr_add_lines</code> yourself. Please note that this
		586	might be very slow, however, as your hook is called for <strong>all</strong> text being
		587	output.</p>
		588	</dd>
		589	<dt>on_tt_write $term, $octets</dt>
		590	<dd>
		591	<p>Called whenever some data is written to the tty/pty and can be used to
		592	suppress or filter tty input.</p>
		593	</dd>
		594	<dt>on_line_update $term, $row</dt>
		595	<dd>
		596	<p>Called whenever a line was updated or changed. Can be used to filter
		597	screen output (e.g. underline urls or other useless stuff). Only lines
		598	that are being shown will be filtered, and, due to performance reasons,
		599	not always immediately.</p>
		600	<p>The row number is always the topmost row of the line if the line spans
		601	multiple rows.</p>
		602	<p>Please note that, if you change the line, then the hook might get called
		603	later with the already-modified line (e.g. if unrelated parts change), so
		604	you cannot just toggle rendition bits, but only set them.</p>
		605	</dd>
		606	<dt>on_refresh_begin $term</dt>
		607	<dd>
179	Called just before the screen gets redrawn. Can be used for overlay	608	<p>Called just before the screen gets redrawn. Can be used for overlay
180	or similar effects by modify terminal contents in refresh_begin, and	609	or similar effects by modify terminal contents in refresh_begin, and
181	restoring them in refresh_end. The built-in overlay and selection display	610	restoring them in refresh_end. The built-in overlay and selection display
182	code is run after this hook, and takes precedence.	611	code is run after this hook, and takes precedence.</p>
183	</dd>	612	</dd>
184	<p></p>	613	<dt>on_refresh_end $term</dt>
185	<dt><strong><a name="item_on_refresh_end__24term">on_refresh_end $term</a></strong><br />
186	</dt>
187	<dd>	614	<dd>
188	Called just after the screen gets redrawn. See <code>on_refresh_begin</code>.	615	<p>Called just after the screen gets redrawn. See <code>on_refresh_begin</code>.</p>
189	</dd>	616	</dd>
190	<p></p>	617	<dt>on_user_command $term, $string</dt>
191	<dt><strong><a name="item_on_keyboard_command__24term_2c__24string">on_keyboard_command $term, $string</a></strong><br />
192	</dt>
193	<dd>	618	<dd>
194	Called whenever the user presses a key combination that has a	619	<p>Called whenever a user-configured event is being activated (e.g. via
195	<code>perl:string</code> action bound to it (see description of the <strong>keysym</strong>	620	a <code>perl:string</code> action bound to a key, see description of the <strong>keysym</strong>
196	resource in the <code>rxvt(1)</code> manpage).	621	resource in the rxvt(1) manpage).</p>
		622	<p>The event is simply the action string. This interface is assumed to change
		623	slightly in the future.</p>
197	</dd>	624	</dd>
198	<p></p></dl>	625	<dt>on_resize_all_windows $tern, $new_width, $new_height</dt>
199	<p>	626	<dd>
200	</p>	627	<p>Called just after the new window size has been calculated, but before
201	<h2><a name="functions_in_the_urxvt_package">Functions in the <code>urxvt</code> Package</a></h2>	628	windows are actually being resized or hints are being set. If this hook
		629	returns TRUE, setting of the window hints is being skipped.</p>
		630	</dd>
		631	<dt>on_x_event $term, $event</dt>
		632	<dd>
		633	<p>Called on every X event received on the vt window (and possibly other
		634	windows). Should only be used as a last resort. Most event structure
		635	members are not passed.</p>
		636	</dd>
		637	<dt>on_root_event $term, $event</dt>
		638	<dd>
		639	<p>Like <code>on_x_event</code>, but is called for events on the root window.</p>
		640	</dd>
		641	<dt>on_focus_in $term</dt>
		642	<dd>
		643	<p>Called whenever the window gets the keyboard focus, before rxvt-unicode
		644	does focus in processing.</p>
		645	</dd>
		646	<dt>on_focus_out $term</dt>
		647	<dd>
		648	<p>Called whenever the window loses keyboard focus, before rxvt-unicode does
		649	focus out processing.</p>
		650	</dd>
		651	<dt>on_configure_notify $term, $event</dt>
		652	<dt>on_property_notify $term, $event</dt>
		653	<dt>on_key_press $term, $event, $keysym, $octets</dt>
		654	<dt>on_key_release $term, $event, $keysym</dt>
		655	<dt>on_button_press $term, $event</dt>
		656	<dt>on_button_release $term, $event</dt>
		657	<dt>on_motion_notify $term, $event</dt>
		658	<dt>on_map_notify $term, $event</dt>
		659	<dt>on_unmap_notify $term, $event</dt>
		660	<dd>
		661	<p>Called whenever the corresponding X event is received for the terminal If
		662	the hook returns true, then the even will be ignored by rxvt-unicode.</p>
		663	<p>The event is a hash with most values as named by Xlib (see the XEvent
		664	manpage), with the additional members <code>row</code> and <code>col</code>, which are the
		665	(real, not screen-based) row and column under the mouse cursor.</p>
		666	<p><code>on_key_press</code> additionally receives the string rxvt-unicode would
		667	output, if any, in locale-specific encoding.</p>
		668	<p>subwindow.</p>
		669	</dd>
		670	<dt>on_client_message $term, $event</dt>
		671	<dt>on_wm_protocols $term, $event</dt>
		672	<dt>on_wm_delete_window $term, $event</dt>
		673	<dd>
		674	<p>Called when various types of ClientMessage events are received (all with
		675	format=32, WM_PROTOCOLS or WM_PROTOCOLS:WM_DELETE_WINDOW).</p>
		676	</dd>
		677	</dl>
		678
		679	</div>
		680	<h2 id="Variables_in_the_code_urxvt_code_Pac">Variables in the <code>urxvt</code> Package</h2>
		681	<div id="Variables_in_the_code_urxvt_code_Pac-2">
202	<dl>	682	<dl>
203	<dt><strong><a name="item_urxvt_3a_3afatal__24errormessage">urxvt::fatal $errormessage</a></strong><br />	683	<dt>$urxvt::LIBDIR</dt>
204	</dt>
205	<dd>	684	<dd>
		685	<p>The rxvt-unicode library directory, where, among other things, the perl
		686	modules and scripts are stored.</p>
		687	</dd>
		688	<dt>$urxvt::RESCLASS, $urxvt::RESCLASS</dt>
		689	<dd>
		690	<p>The resource class and name rxvt-unicode uses to look up X resources.</p>
		691	</dd>
		692	<dt>$urxvt::RXVTNAME</dt>
		693	<dd>
		694	<p>The basename of the installed binaries, usually <code>urxvt</code>.</p>
		695	</dd>
		696	<dt>$urxvt::TERM</dt>
		697	<dd>
		698	<p>The current terminal. This variable stores the current <code>urxvt::term</code>
		699	object, whenever a callback/hook is executing.</p>
		700	</dd>
		701	<dt>@urxvt::TERM_INIT</dt>
		702	<dd>
		703	<p>All code references in this array will be called as methods of the next newly
		704	created <code>urxvt::term</code> object (during the <code>on_init</code> phase). The array
		705	gets cleared before the code references that were in it are being executed,
		706	so references can push themselves onto it again if they so desire.</p>
		707	<p>This complements to the perl-eval command line option, but gets executed
		708	first.</p>
		709	</dd>
		710	<dt>@urxvt::TERM_EXT</dt>
		711	<dd>
		712	<p>Works similar to <code>@TERM_INIT</code>, but contains perl package/class names, which
		713	get registered as normal extensions after calling the hooks in <code>@TERM_INIT</code>
		714	but before other extensions. Gets cleared just like <code>@TERM_INIT</code>.</p>
		715	</dd>
		716	</dl>
		717
		718	</div>
		719	<h2 id="Functions_in_the_code_urxvt_code_Pac">Functions in the <code>urxvt</code> Package</h2>
		720	<div id="Functions_in_the_code_urxvt_code_Pac-2">
		721	<dl>
		722	<dt>urxvt::fatal $errormessage</dt>
		723	<dd>
206	Fatally aborts execution with the given error message. Avoid at all	724	<p>Fatally aborts execution with the given error message. Avoid at all
207	costs! The only time this is acceptable is when the terminal process	725	costs! The only time this is acceptable is when the terminal process
208	starts up.	726	starts up.</p>
209	</dd>	727	</dd>
210	<p></p>	728	<dt>urxvt::warn $string</dt>
211	<dt><strong><a name="item_urxvt_3a_3awarn__24string">urxvt::warn $string</a></strong><br />
212	</dt>
213	<dd>	729	<dd>
214	Calls <code>rxvt_warn</code> with the given string which should not include a	730	<p>Calls <code>rxvt_warn</code> with the given string which should not include a
215	newline. The module also overwrites the <code>warn</code> builtin with a function	731	newline. The module also overwrites the <code>warn</code> builtin with a function
216	that calls this function.	732	that calls this function.</p>
217	</dd>
218	<dd>
219	<p>Using this function has the advantage that its output ends up in the	733	<p>Using this function has the advantage that its output ends up in the
220	correct place, e.g. on stderr of the connecting urxvtc client.</p>	734	correct place, e.g. on stderr of the connecting urxvtc client.</p>
		735	<p>Messages have a size limit of 1023 bytes currently.</p>
221	</dd>	736	</dd>
222	<p></p>	737	<dt>@terms = urxvt::termlist</dt>
223	<dt><strong><a name="item__24time__3d_urxvt_3a_3anow">$time = urxvt::NOW</a></strong><br />
224	</dt>
225	<dd>	738	<dd>
226	Returns the ``current time'' (as per the event loop).	739	<p>Returns all urxvt::term objects that exist in this process, regardless of
		740	whether they are started, being destroyed etc., so be careful. Only term
		741	objects that have perl extensions attached will be returned (because there
		742	is no urxvt::term objet associated with others).</p>
227	</dd>	743	</dd>
228	<p></p></dl>	744	<dt>$time = urxvt::NOW</dt>
229	<p>	745	<dd>
230	</p>	746	<p>Returns the "current time" (as per the event loop).</p>
231	<h2><a name="the_urxvt__term_class">The <code>urxvt::term</code> Class</a></h2>	747	</dd>
		748	<dt>urxvt::CurrentTime</dt>
		749	<dt>urxvt::ShiftMask, LockMask, ControlMask, Mod1Mask, Mod2Mask,
		750	Mod3Mask, Mod4Mask, Mod5Mask, Button1Mask, Button2Mask, Button3Mask,
		751	Button4Mask, Button5Mask, AnyModifier</dt>
		752	<dt>urxvt::NoEventMask, KeyPressMask, KeyReleaseMask,
		753	ButtonPressMask, ButtonReleaseMask, EnterWindowMask, LeaveWindowMask,
		754	PointerMotionMask, PointerMotionHintMask, Button1MotionMask, Button2MotionMask,
		755	Button3MotionMask, Button4MotionMask, Button5MotionMask, ButtonMotionMask,
		756	KeymapStateMask, ExposureMask, VisibilityChangeMask, StructureNotifyMask,
		757	ResizeRedirectMask, SubstructureNotifyMask, SubstructureRedirectMask,
		758	FocusChangeMask, PropertyChangeMask, ColormapChangeMask, OwnerGrabButtonMask</dt>
		759	<dt>urxvt::KeyPress, KeyRelease, ButtonPress, ButtonRelease, MotionNotify,
		760	EnterNotify, LeaveNotify, FocusIn, FocusOut, KeymapNotify, Expose,
		761	GraphicsExpose, NoExpose, VisibilityNotify, CreateNotify, DestroyNotify,
		762	UnmapNotify, MapNotify, MapRequest, ReparentNotify, ConfigureNotify,
		763	ConfigureRequest, GravityNotify, ResizeRequest, CirculateNotify,
		764	CirculateRequest, PropertyNotify, SelectionClear, SelectionRequest,
		765	SelectionNotify, ColormapNotify, ClientMessage, MappingNotify</dt>
		766	<dd>
		767	<p>Various constants for use in X calls and event processing.</p>
		768	</dd>
		769	</dl>
		770
		771	</div>
		772	<h2 id="RENDITION">RENDITION</h2>
		773	<div id="RENDITION_CONTENT">
		774	<p>Rendition bitsets contain information about colour, font, font styles and
		775	similar information for each screen cell.</p>
		776	<p>The following "macros" deal with changes in rendition sets. You should
		777	never just create a bitset, you should always modify an existing one,
		778	as they contain important information required for correct operation of
		779	rxvt-unicode.</p>
232	<dl>	780	<dl>
233	<dt><strong><a name="item_resource">$value = $term->resource ($name[, $newval])</a></strong><br />	781	<dt>$rend = urxvt::DEFAULT_RSTYLE</dt>
234	</dt>
235	<dd>	782	<dd>
		783	<p>Returns the default rendition, as used when the terminal is starting up or
		784	being reset. Useful as a base to start when creating renditions.</p>
		785	</dd>
		786	<dt>$rend = urxvt::OVERLAY_RSTYLE</dt>
		787	<dd>
		788	<p>Return the rendition mask used for overlays by default.</p>
		789	</dd>
		790	<dt>$rendbit = urxvt::RS_Bold, RS_Italic, RS_Blink, RS_RVid, RS_Uline</dt>
		791	<dd>
		792	<p>Return the bit that enabled bold, italic, blink, reverse-video and
		793	underline, respectively. To enable such a style, just logically OR it into
		794	the bitset.</p>
		795	</dd>
		796	<dt>$foreground = urxvt::GET_BASEFG $rend</dt>
		797	<dt>$background = urxvt::GET_BASEBG $rend</dt>
		798	<dd>
		799	<p>Return the foreground/background colour index, respectively.</p>
		800	</dd>
		801	<dt>$rend = urxvt::SET_FGCOLOR $rend, $new_colour</dt>
		802	<dt>$rend = urxvt::SET_BGCOLOR $rend, $new_colour</dt>
		803	<dt>$rend = urxvt::SET_COLOR $rend, $new_fg, $new_bg</dt>
		804	<dd>
		805	<p>Replace the foreground/background colour in the rendition mask with the
		806	specified one.</p>
		807	</dd>
		808	<dt>$value = urxvt::GET_CUSTOM $rend</dt>
		809	<dd>
		810	<p>Return the "custom" value: Every rendition has 5 bits for use by
		811	extensions. They can be set and changed as you like and are initially
		812	zero.</p>
		813	</dd>
		814	<dt>$rend = urxvt::SET_CUSTOM $rend, $new_value</dt>
		815	<dd>
		816	<p>Change the custom value.</p>
		817	</dd>
		818	</dl>
		819
		820	</div>
		821	<h2 id="The_code_urxvt_anyevent_code_Class">The <code>urxvt::anyevent</code> Class</h2>
		822	<div id="The_code_urxvt_anyevent_code_Class_C">
		823	<p>The sole purpose of this class is to deliver an interface to the
		824	<code>AnyEvent</code> module - any module using it will work inside urxvt without
		825	further programming. The only exception is that you cannot wait on
		826	condition variables, but non-blocking condvar use is ok. What this means
		827	is that you cannot use blocking APIs, but the non-blocking variant should
		828	work.</p>
		829
		830	</div>
		831	<h2 id="The_code_urxvt_term_code_Class">The <code>urxvt::term</code> Class</h2>
		832	<div id="The_code_urxvt_term_code_Class_CONTE">
		833	<dl>
		834	<dt>$term = new urxvt::term $envhashref, $rxvtname, [arg...]</dt>
		835	<dd>
		836	<p>Creates a new terminal, very similar as if you had started it with system
		837	<code>$rxvtname, arg...</code>. <code>$envhashref</code> must be a reference to a <code>%ENV</code>-like
		838	hash which defines the environment of the new terminal.</p>
		839	<p>Croaks (and probably outputs an error message) if the new instance
		840	couldn't be created. Returns <code>undef</code> if the new instance didn't
		841	initialise perl, and the terminal object otherwise. The <code>init</code> and
		842	<code>start</code> hooks will be called before this call returns, and are free to
		843	refer to global data (which is race free).</p>
		844	</dd>
		845	<dt>$term->destroy</dt>
		846	<dd>
		847	<p>Destroy the terminal object (close the window, free resources
		848	etc.). Please note that rxvt will not exit as long as any event
		849	watchers (timers, io watchers) are still active.</p>
		850	</dd>
		851	<dt>$term->exec_async ($cmd[, @args])</dt>
		852	<dd>
		853	<p>Works like the combination of the <code>fork</code>/<code>exec</code> builtins, which executes
		854	("starts") programs in the background. This function takes care of setting
		855	the user environment before exec'ing the command (e.g. <code>PATH</code>) and should
		856	be preferred over explicit calls to <code>exec</code> or <code>system</code>.</p>
		857	<p>Returns the pid of the subprocess or <code>undef</code> on error.</p>
		858	</dd>
		859	<dt>$isset = $term->option ($optval[, $set])</dt>
		860	<dd>
		861	<p>Returns true if the option specified by <code>$optval</code> is enabled, and
		862	optionally change it. All option values are stored by name in the hash
		863	<code>%urxvt::OPTION</code>. Options not enabled in this binary are not in the hash.</p>
		864	<p>Here is a likely non-exhaustive list of option names, please see the
		865	source file <cite>/src/optinc.h</cite> to see the actual list:</p>
		866	<pre> borderLess console cursorBlink cursorUnderline hold iconic insecure
		867	intensityStyles jumpScroll loginShell mapAlert meta8 mouseWheelScrollPage
		868	override-redirect pastableTabs pointerBlank reverseVideo scrollBar
		869	scrollBar_floating scrollBar_right scrollTtyKeypress scrollTtyOutput
		870	scrollWithBuffer secondaryScreen secondaryScroll skipBuiltinGlyphs
		871	transparent tripleclickwords utmpInhibit visualBell
		872
		873	</pre>
		874	</dd>
		875	<dt>$value = $term->resource ($name[, $newval])</dt>
		876	<dd>
236	Returns the current resource value associated with a given name and	877	<p>Returns the current resource value associated with a given name and
237	optionally sets a new value. Setting values is most useful in the <code>init</code>	878	optionally sets a new value. Setting values is most useful in the <code>init</code>
238	hook. Unset resources are returned and accepted as <code>undef</code>.	879	hook. Unset resources are returned and accepted as <code>undef</code>.</p>
239	</dd>
240	<dd>
241	<p>The new value must be properly encoded to a suitable character encoding	880	<p>The new value must be properly encoded to a suitable character encoding
242	before passing it to this method. Similarly, the returned value may need	881	before passing it to this method. Similarly, the returned value may need
243	to be converted from the used encoding to text.</p>	882	to be converted from the used encoding to text.</p>
244	</dd>
245	<dd>
246	<p>Resource names are as defined in <em>src/rsinc.h</em>. Colours can be specified	883	<p>Resource names are as defined in <cite>src/rsinc.h</cite>. Colours can be specified
247	as resource names of the form <code>color+<index></code>, e.g. <code>color+5</code>. (will	884	as resource names of the form <code>color+<index></code>, e.g. <code>color+5</code>. (will
248	likely change).</p>	885	likely change).</p>
249	</dd>
250	<dd>
251	<p>Please note that resource strings will currently only be freed when the	886	<p>Please note that resource strings will currently only be freed when the
252	terminal is destroyed, so changing options frequently will eat memory.</p>	887	terminal is destroyed, so changing options frequently will eat memory.</p>
253	</dd>
254	<dd>
255	<p>Here is a a likely non-exhaustive list of resource names, not all of which	888	<p>Here is a likely non-exhaustive list of resource names, not all of which
256	are supported in every build, please see the source to see the actual	889	are supported in every build, please see the source file <cite>/src/rsinc.h</cite>
257	list:</p>	890	to see the actual list:</p>
258	</dd>
259	<dd>
260	<pre>
261	answerbackstring backgroundPixmap backspace_key boldFont boldItalicFont	891	<pre> answerbackstring backgroundPixmap backspace_key boldFont boldItalicFont
262	borderLess color cursorBlink cursorUnderline cutchars delete_key	892	borderLess color cursorBlink cursorUnderline cutchars delete_key
263	display_name embed ext_bwidth fade font geometry hold iconName	893	display_name embed ext_bwidth fade font geometry hold iconName
264	imFont imLocale inputMethod insecure int_bwidth intensityStyles	894	imFont imLocale inputMethod insecure int_bwidth intensityStyles
265	italicFont jumpScroll lineSpace loginShell mapAlert menu meta8 modifier	895	italicFont jumpScroll lineSpace loginShell mapAlert meta8 modifier
266	mouseWheelScrollPage name pastableTabs path perl_eval perl_ext	896	mouseWheelScrollPage name override_redirect pastableTabs path perl_eval
267	perl_lib pointerBlank pointerBlankDelay preeditType print_pipe pty_fd	897	perl_ext_1 perl_ext_2 perl_lib pointerBlank pointerBlankDelay
268	reverseVideo saveLines scrollBar scrollBar_align scrollBar_floating	898	preeditType print_pipe pty_fd reverseVideo saveLines scrollBar
269	scrollBar_right scrollBar_thickness scrollTtyKeypress scrollTtyOutput	899	scrollBar_align scrollBar_floating scrollBar_right scrollBar_thickness
270	scrollWithBuffer scrollstyle secondaryScreen secondaryScroll selectstyle	900	scrollTtyKeypress scrollTtyOutput scrollWithBuffer scrollstyle
271	shade term_name title transparent transparent_all tripleclickwords	901	secondaryScreen secondaryScroll selectstyle shade term_name title
272	utmpInhibit visualBell</pre>	902	transient_for transparent transparent_all tripleclickwords utmpInhibit
		903	visualBell
		904
		905	</pre>
273	</dd>	906	</dd>
274	<p></p>	907	<dt>$value = $term->x_resource ($pattern)</dt>
275	<dt><strong><a name="item_selection_mark">($row, $col) = $term->selection_mark ([$row, $col])</a></strong><br />
276	</dt>
277	<dt><strong><a name="item_selection_beg">($row, $col) = $term->selection_beg ([$row, $col])</a></strong><br />
278	</dt>
279	<dt><strong><a name="item_selection_end">($row, $col) = $term->selection_end ([$row, $col])</a></strong><br />
280	</dt>
281	<dd>	908	<dd>
		909	<p>Returns the X-Resource for the given pattern, excluding the program or
		910	class name, i.e. <code>$term->x_resource ("boldFont")</code> should return the
		911	same value as used by this instance of rxvt-unicode. Returns <code>undef</code> if no
		912	resource with that pattern exists.</p>
		913	<p>This method should only be called during the <code>on_start</code> hook, as there is
		914	only one resource database per display, and later invocations might return
		915	the wrong resources.</p>
		916	</dd>
		917	<dt>$success = $term->parse_keysym ($keysym_spec, $command_string)</dt>
		918	<dd>
		919	<p>Adds a keymap translation exactly as specified via a resource. See the
		920	<code>keysym</code> resource in the rxvt(1) manpage.</p>
		921	</dd>
		922	<dt>$rend = $term->rstyle ([$new_rstyle])</dt>
		923	<dd>
		924	<p>Return and optionally change the current rendition. Text that is output by
		925	the terminal application will use this style.</p>
		926	</dd>
		927	<dt>($row, $col) = $term->screen_cur ([$row, $col])</dt>
		928	<dd>
		929	<p>Return the current coordinates of the text cursor position and optionally
		930	set it (which is usually bad as applications don't expect that).</p>
		931	</dd>
		932	<dt>($row, $col) = $term->selection_mark ([$row, $col])</dt>
		933	<dt>($row, $col) = $term->selection_beg ([$row, $col])</dt>
		934	<dt>($row, $col) = $term->selection_end ([$row, $col])</dt>
		935	<dd>
282	Return the current values of the selection mark, begin or end positions,	936	<p>Return the current values of the selection mark, begin or end positions,
283	and optionally set them to new values.	937	and optionally set them to new values.</p>
284	</dd>	938	</dd>
285	<p></p>	939	<dt>$term->selection_make ($eventtime[, $rectangular])</dt>
286	<dt><strong><a name="item_selection_grab">$success = $term->selection_grab ($eventtime)</a></strong><br />
287	</dt>
288	<dd>	940	<dd>
289	Try to request the primary selection from the server (for example, as set	941	<p>Tries to make a selection as set by <code>selection_beg</code> and
290	by the next method).	942	<code>selection_end</code>. If <code>$rectangular</code> is true (default: false), a
		943	rectangular selection will be made. This is the prefered function to make
		944	a selection.</p>
291	</dd>	945	</dd>
292	<p></p>	946	<dt>$success = $term->selection_grab ($eventtime)</dt>
293	<dt><strong><a name="item_selection">$oldtext = $term->selection ([$newtext])</a></strong><br />
294	</dt>
295	<dd>	947	<dd>
		948	<p>Try to request the primary selection text from the server (for example, as
		949	set by the next method). No visual feedback will be given. This function
		950	is mostly useful from within <code>on_sel_grab</code> hooks.</p>
		951	</dd>
		952	<dt>$oldtext = $term->selection ([$newtext])</dt>
		953	<dd>
296	Return the current selection text and optionally replace it by <code>$newtext</code>.	954	<p>Return the current selection text and optionally replace it by <code>$newtext</code>.</p>
297	</dd>	955	</dd>
298	<p></p>	956	<dt>$term->overlay_simple ($x, $y, $text)</dt>
299	<dt><strong><a name="item_scr_overlay">$term->scr_overlay ($x, $y, $text)</a></strong><br />
300	</dt>
301	<dd>	957	<dd>
302	Create a simple multi-line overlay box. See the next method for details.	958	<p>Create a simple multi-line overlay box. See the next method for details.</p>
303	</dd>	959	</dd>
304	<p></p>	960	<dt>$term->overlay ($x, $y, $width, $height[, $rstyle[, $border]])</dt>
305	<dt><strong><a name="item_scr_overlay_new">$term->scr_overlay_new ($x, $y, $width, $height)</a></strong><br />
306	</dt>
307	<dd>	961	<dd>
308	Create a new (empty) overlay at the given position with the given	962	<p>Create a new (empty) overlay at the given position with the given
309	width/height. A border will be put around the box. If either <code>$x</code> or	963	width/height. <code>$rstyle</code> defines the initial rendition style
310	<code>$y</code> is negative, then this is counted from the right/bottom side,	964	(default: <code>OVERLAY_RSTYLE</code>).</p>
311	respectively.	965	<p>If <code>$border</code> is <code>2</code> (default), then a decorative border will be put
		966	around the box.</p>
		967	<p>If either <code>$x</code> or <code>$y</code> is negative, then this is counted from the
		968	right/bottom side, respectively.</p>
		969	<p>This method returns an urxvt::overlay object. The overlay will be visible
		970	as long as the perl object is referenced.</p>
		971	<p>The methods currently supported on <code>urxvt::overlay</code> objects are:</p>
		972	<p>
		973	<dl>
		974	<dt>$overlay->set ($x, $y, $text, $rend)</dt>
		975	<dd>
		976	<p>Similar to <code>$term->ROW_t</code> and <code>$term->ROW_r</code> in that it puts
		977	text in rxvt-unicode's special encoding and an array of rendition values
		978	at a specific position inside the overlay.</p>
		979	</dd>
		980	<dt>$overlay->hide</dt>
		981	<dd>
		982	<p>If visible, hide the overlay, but do not destroy it.</p>
		983	</dd>
		984	<dt>$overlay->show</dt>
		985	<dd>
		986	<p>If hidden, display the overlay again.</p>
		987	</dd>
		988	</dl>
		989	</p>
312	</dd>	990	</dd>
313	<p></p>	991	<dt>$popup = $term->popup ($event)</dt>
314	<dt><strong><a name="item_scr_overlay_off">$term->scr_overlay_off</a></strong><br />
315	</dt>
316	<dd>	992	<dd>
317	Switch the overlay off again.	993	<p>Creates a new <code>urxvt::popup</code> object that implements a popup menu. The
		994	<code>$event</code> <i>must</i> be the event causing the menu to pop up (a button event,
		995	currently).</p>
318	</dd>	996	</dd>
319	<p></p>	997	<dt>$cellwidth = $term->strwidth ($string)</dt>
320	<dt><strong><a name="item_scr_overlay_set_char">$term->scr_overlay_set_char ($x, $y, $char, $rend = OVERLAY_RSTYLE)</a></strong><br />
321	</dt>
322	<dd>	998	<dd>
323	Put a single character (specified numerically) at the given overlay
324	position.
325	</dd>
326	<p></p>
327	<dt><strong><a name="item_scr_overlay_set">$term->scr_overlay_set ($x, $y, $text)</a></strong><br />
328	</dt>
329	<dd>
330	Write a string at the given position into the overlay.
331	</dd>
332	<p></p>
333	<dt><strong><a name="item_strwidth">$cellwidth = $term->strwidth $string</a></strong><br />
334	</dt>
335	<dd>
336	Returns the number of screen-cells this string would need. Correctly	999	<p>Returns the number of screen-cells this string would need. Correctly
337	accounts for wide and combining characters.	1000	accounts for wide and combining characters.</p>
338	</dd>	1001	</dd>
339	<p></p>	1002	<dt>$octets = $term->locale_encode ($string)</dt>
340	<dt><strong><a name="item_locale_encode">$octets = $term->locale_encode $string</a></strong><br />
341	</dt>
342	<dd>	1003	<dd>
343	Convert the given text string into the corresponding locale encoding.	1004	<p>Convert the given text string into the corresponding locale encoding.</p>
344	</dd>	1005	</dd>
345	<p></p>	1006	<dt>$string = $term->locale_decode ($octets)</dt>
346	<dt><strong><a name="item_locale_decode">$string = $term->locale_decode $octets</a></strong><br />
347	</dt>
348	<dd>	1007	<dd>
349	Convert the given locale-encoded octets into a perl string.	1008	<p>Convert the given locale-encoded octets into a perl string.</p>
350	</dd>	1009	</dd>
351	<p></p>	1010	<dt>$term->scr_xor_span ($beg_row, $beg_col, $end_row, $end_col[, $rstyle])</dt>
352	<dt><strong><a name="item_tt_write">$term->tt_write ($octets)</a></strong><br />
353	</dt>
354	<dd>	1011	<dd>
		1012	<p>XORs the rendition values in the given span with the provided value
		1013	(default: <code>RS_RVid</code>), which <i>MUST NOT</i> contain font styles. Useful in
		1014	refresh hooks to provide effects similar to the selection.</p>
		1015	</dd>
		1016	<dt>$term->scr_xor_rect ($beg_row, $beg_col, $end_row, $end_col[, $rstyle1[, $rstyle2]])</dt>
		1017	<dd>
		1018	<p>Similar to <code>scr_xor_span</code>, but xors a rectangle instead. Trailing
		1019	whitespace will additionally be xored with the <code>$rstyle2</code>, which defaults
		1020	to <code>RS_RVid \| RS_Uline</code>, which removes reverse video again and underlines
		1021	it instead. Both styles <i>MUST NOT</i> contain font styles.</p>
		1022	</dd>
		1023	<dt>$term->scr_bell</dt>
		1024	<dd>
		1025	<p>Ring the bell!</p>
		1026	</dd>
		1027	<dt>$term->scr_add_lines ($string)</dt>
		1028	<dd>
		1029	<p>Write the given text string to the screen, as if output by the application
		1030	running inside the terminal. It may not contain command sequences (escape
		1031	codes), but is free to use line feeds, carriage returns and tabs. The
		1032	string is a normal text string, not in locale-dependent encoding.</p>
		1033	<p>Normally its not a good idea to use this function, as programs might be
		1034	confused by changes in cursor position or scrolling. Its useful inside a
		1035	<code>on_add_lines</code> hook, though.</p>
		1036	</dd>
		1037	<dt>$term->scr_change_screen ($screen)</dt>
		1038	<dd>
		1039	<p>Switch to given screen - 0 primary, 1 secondary.</p>
		1040	</dd>
		1041	<dt>$term->cmd_parse ($octets)</dt>
		1042	<dd>
		1043	<p>Similar to <code>scr_add_lines</code>, but the argument must be in the
		1044	locale-specific encoding of the terminal and can contain command sequences
		1045	(escape codes) that will be interpreted.</p>
		1046	</dd>
		1047	<dt>$term->tt_write ($octets)</dt>
		1048	<dd>
355	Write the octets given in <code>$data</code> to the tty (i.e. as program input). To	1049	<p>Write the octets given in <code>$data</code> to the tty (i.e. as program input). To
356	pass characters instead of octets, you should convetr you strings first to	1050	pass characters instead of octets, you should convert your strings first
357	the locale-specific encoding using <a href="#item_locale_encode"><code>$term->locale_encode</code></a>.	1051	to the locale-specific encoding using <code>$term->locale_encode</code>.</p>
358	</dd>	1052	</dd>
359	<p></p></dl>	1053	<dt>$old_events = $term->pty_ev_events ([$new_events])</dt>
360	<p>	1054	<dd>
		1055	<p>Replaces the event mask of the pty watcher by the given event mask. Can
		1056	be used to suppress input and output handling to the pty/tty. See the
		1057	description of <code>urxvt::timer->events</code>. Make sure to always restore
		1058	the previous value.</p>
		1059	</dd>
		1060	<dt>$fd = $term->pty_fd</dt>
		1061	<dd>
		1062	<p>Returns the master file descriptor for the pty in use, or <code>-1</code> if no pty
		1063	is used.</p>
		1064	</dd>
		1065	<dt>$windowid = $term->parent</dt>
		1066	<dd>
		1067	<p>Return the window id of the toplevel window.</p>
		1068	</dd>
		1069	<dt>$windowid = $term->vt</dt>
		1070	<dd>
		1071	<p>Return the window id of the terminal window.</p>
		1072	</dd>
		1073	<dt>$term->vt_emask_add ($x_event_mask)</dt>
		1074	<dd>
		1075	<p>Adds the specified events to the vt event mask. Useful e.g. when you want
		1076	to receive pointer events all the times:</p>
		1077	<pre> $term->vt_emask_add (urxvt::PointerMotionMask);
		1078
361	</p>	1079	</pre>
		1080	</dd>
		1081	<dt>$term->focus_in</dt>
		1082	<dt>$term->focus_out</dt>
		1083	<dt>$term->key_press ($state, $keycode[, $time])</dt>
		1084	<dt>$term->key_release ($state, $keycode[, $time])</dt>
		1085	<dd>
		1086	<p>Deliver various fake events to to terminal.</p>
		1087	</dd>
		1088	<dt>$window_width = $term->width</dt>
		1089	<dt>$window_height = $term->height</dt>
		1090	<dt>$font_width = $term->fwidth</dt>
		1091	<dt>$font_height = $term->fheight</dt>
		1092	<dt>$font_ascent = $term->fbase</dt>
		1093	<dt>$terminal_rows = $term->nrow</dt>
		1094	<dt>$terminal_columns = $term->ncol</dt>
		1095	<dt>$has_focus = $term->focus</dt>
		1096	<dt>$is_mapped = $term->mapped</dt>
		1097	<dt>$max_scrollback = $term->saveLines</dt>
		1098	<dt>$nrow_plus_saveLines = $term->total_rows</dt>
		1099	<dt>$topmost_scrollback_row = $term->top_row</dt>
		1100	<dd>
		1101	<p>Return various integers describing terminal characteristics.</p>
		1102	</dd>
		1103	<dt>$x_display = $term->display_id</dt>
		1104	<dd>
		1105	<p>Return the DISPLAY used by rxvt-unicode.</p>
		1106	</dd>
		1107	<dt>$lc_ctype = $term->locale</dt>
		1108	<dd>
		1109	<p>Returns the LC_CTYPE category string used by this rxvt-unicode.</p>
		1110	</dd>
		1111	<dt>$env = $term->env</dt>
		1112	<dd>
		1113	<p>Returns a copy of the environment in effect for the terminal as a hashref
		1114	similar to <code>\%ENV</code>.</p>
		1115	</dd>
		1116	<dt>@envv = $term->envv</dt>
		1117	<dd>
		1118	<p>Returns the environment as array of strings of the form <code>VAR=VALUE</code>.</p>
		1119	</dd>
		1120	<dt>@argv = $term->argv</dt>
		1121	<dd>
		1122	<p>Return the argument vector as this terminal, similar to @ARGV, but
		1123	includes the program name as first element.</p>
		1124	</dd>
		1125	<dt>$modifiermask = $term->ModLevel3Mask</dt>
		1126	<dt>$modifiermask = $term->ModMetaMask</dt>
		1127	<dt>$modifiermask = $term->ModNumLockMask</dt>
		1128	<dd>
		1129	<p>Return the modifier masks corresponding to the "ISO Level 3 Shift" (often
		1130	AltGr), the meta key (often Alt) and the num lock key, if applicable.</p>
		1131	</dd>
		1132	<dt>$screen = $term->current_screen</dt>
		1133	<dd>
		1134	<p>Returns the currently displayed screen (0 primary, 1 secondary).</p>
		1135	</dd>
		1136	<dt>$cursor_is_hidden = $term->hidden_cursor</dt>
		1137	<dd>
		1138	<p>Returns whether the cursor is currently hidden or not.</p>
		1139	</dd>
		1140	<dt>$view_start = $term->view_start ([$newvalue])</dt>
		1141	<dd>
		1142	<p>Returns the row number of the topmost displayed line. Maximum value is
		1143	<code>0</code>, which displays the normal terminal contents. Lower values scroll
		1144	this many lines into the scrollback buffer.</p>
		1145	</dd>
		1146	<dt>$term->want_refresh</dt>
		1147	<dd>
		1148	<p>Requests a screen refresh. At the next opportunity, rxvt-unicode will
		1149	compare the on-screen display with its stored representation. If they
		1150	differ, it redraws the differences.</p>
		1151	<p>Used after changing terminal contents to display them.</p>
		1152	</dd>
		1153	<dt>$text = $term->ROW_t ($row_number[, $new_text[, $start_col]])</dt>
		1154	<dd>
		1155	<p>Returns the text of the entire row with number <code>$row_number</code>. Row <code>0</code>
		1156	is the topmost terminal line, row <code>$term->$ncol-1</code> is the bottommost
		1157	terminal line. The scrollback buffer starts at line <code>-1</code> and extends to
		1158	line <code>-$term->nsaved</code>. Nothing will be returned if a nonexistent line
		1159	is requested.</p>
		1160	<p>If <code>$new_text</code> is specified, it will replace characters in the current
		1161	line, starting at column <code>$start_col</code> (default <code>0</code>), which is useful
		1162	to replace only parts of a line. The font index in the rendition will
		1163	automatically be updated.</p>
		1164	<p><code>$text</code> is in a special encoding: tabs and wide characters that use more
		1165	than one cell when displayed are padded with <code>$urxvt::NOCHAR</code> (chr 65535)
		1166	characters. Characters with combining characters and other characters that
		1167	do not fit into the normal tetx encoding will be replaced with characters
		1168	in the private use area.</p>
		1169	<p>You have to obey this encoding when changing text. The advantage is
		1170	that <code>substr</code> and similar functions work on screen cells and not on
		1171	characters.</p>
		1172	<p>The methods <code>$term->special_encode</code> and <code>$term->special_decode</code>
		1173	can be used to convert normal strings into this encoding and vice versa.</p>
		1174	</dd>
		1175	<dt>$rend = $term->ROW_r ($row_number[, $new_rend[, $start_col]])</dt>
		1176	<dd>
		1177	<p>Like <code>$term->ROW_t</code>, but returns an arrayref with rendition
		1178	bitsets. Rendition bitsets contain information about colour, font, font
		1179	styles and similar information. See also <code>$term->ROW_t</code>.</p>
		1180	<p>When setting rendition, the font mask will be ignored.</p>
		1181	<p>See the section on RENDITION, above.</p>
		1182	</dd>
		1183	<dt>$length = $term->ROW_l ($row_number[, $new_length])</dt>
		1184	<dd>
		1185	<p>Returns the number of screen cells that are in use ("the line
		1186	length"). Unlike the urxvt core, this returns <code>$term->ncol</code> if the
		1187	line is joined with the following one.</p>
		1188	</dd>
		1189	<dt>$bool = $term->is_longer ($row_number)</dt>
		1190	<dd>
		1191	<p>Returns true if the row is part of a multiple-row logical "line" (i.e.
		1192	joined with the following row), which means all characters are in use
		1193	and it is continued on the next row (and possibly a continuation of the
		1194	previous row(s)).</p>
		1195	</dd>
		1196	<dt>$line = $term->line ($row_number)</dt>
		1197	<dd>
		1198	<p>Create and return a new <code>urxvt::line</code> object that stores information
		1199	about the logical line that row <code>$row_number</code> is part of. It supports the
		1200	following methods:</p>
		1201	<p>
		1202	<dl>
		1203	<dt>$text = $line->t ([$new_text])</dt>
		1204	<dd>
		1205	<p>Returns or replaces the full text of the line, similar to <code>ROW_t</code></p>
		1206	</dd>
		1207	<dt>$rend = $line->r ([$new_rend])</dt>
		1208	<dd>
		1209	<p>Returns or replaces the full rendition array of the line, similar to <code>ROW_r</code></p>
		1210	</dd>
		1211	<dt>$length = $line->l</dt>
		1212	<dd>
		1213	<p>Returns the length of the line in cells, similar to <code>ROW_l</code>.</p>
		1214	</dd>
		1215	<dt>$rownum = $line->beg</dt>
		1216	<dt>$rownum = $line->end</dt>
		1217	<dd>
		1218	<p>Return the row number of the first/last row of the line, respectively.</p>
		1219	</dd>
		1220	<dt>$offset = $line->offset_of ($row, $col)</dt>
		1221	<dd>
		1222	<p>Returns the character offset of the given row\|col pair within the logical
		1223	line. Works for rows outside the line, too, and returns corresponding
		1224	offsets outside the string.</p>
		1225	</dd>
		1226	<dt>($row, $col) = $line->coord_of ($offset)</dt>
		1227	<dd>
		1228	<p>Translates a string offset into terminal coordinates again.</p>
		1229	</dd>
		1230	</dl>
		1231	</p>
		1232	</dd>
		1233	<dt>$text = $term->special_encode $string</dt>
		1234	<dd>
		1235	<p>Converts a perl string into the special encoding used by rxvt-unicode,
		1236	where one character corresponds to one screen cell. See
		1237	<code>$term->ROW_t</code> for details.</p>
		1238	</dd>
		1239	<dt>$string = $term->special_decode $text</dt>
		1240	<dd>
		1241	<p>Converts rxvt-unicodes text representation into a perl string. See
		1242	<code>$term->ROW_t</code> for details.</p>
		1243	</dd>
		1244	<dt>$success = $term->grab_button ($button, $modifiermask[, $window = $term->vt])</dt>
		1245	<dt>$term->ungrab_button ($button, $modifiermask[, $window = $term->vt])</dt>
		1246	<dd>
		1247	<p>Register/unregister a synchronous button grab. See the XGrabButton
		1248	manpage.</p>
		1249	</dd>
		1250	<dt>$success = $term->grab ($eventtime[, $sync])</dt>
		1251	<dd>
		1252	<p>Calls XGrabPointer and XGrabKeyboard in asynchronous (default) or
		1253	synchronous (<code>$sync</code> is true). Also remembers the grab timestamp.</p>
		1254	</dd>
		1255	<dt>$term->allow_events_async</dt>
		1256	<dd>
		1257	<p>Calls XAllowEvents with AsyncBoth for the most recent grab.</p>
		1258	</dd>
		1259	<dt>$term->allow_events_sync</dt>
		1260	<dd>
		1261	<p>Calls XAllowEvents with SyncBoth for the most recent grab.</p>
		1262	</dd>
		1263	<dt>$term->allow_events_replay</dt>
		1264	<dd>
		1265	<p>Calls XAllowEvents with both ReplayPointer and ReplayKeyboard for the most
		1266	recent grab.</p>
		1267	</dd>
		1268	<dt>$term->ungrab</dt>
		1269	<dd>
		1270	<p>Calls XUngrab for the most recent grab. Is called automatically on
		1271	evaluation errors, as it is better to lose the grab in the error case as
		1272	the session.</p>
		1273	</dd>
		1274	<dt>$atom = $term->XInternAtom ($atom_name[, $only_if_exists])</dt>
		1275	<dt>$atom_name = $term->XGetAtomName ($atom)</dt>
		1276	<dt>@atoms = $term->XListProperties ($window)</dt>
		1277	<dt>($type,$format,$octets) = $term->XGetWindowProperty ($window, $property)</dt>
		1278	<dt>$term->XChangeWindowProperty ($window, $property, $type, $format, $octets)</dt>
		1279	<dt>$term->XDeleteProperty ($window, $property)</dt>
		1280	<dt>$window = $term->DefaultRootWindow</dt>
		1281	<dt>$term->XReparentWindow ($window, $parent, [$x, $y])</dt>
		1282	<dt>$term->XMapWindow ($window)</dt>
		1283	<dt>$term->XUnmapWindow ($window)</dt>
		1284	<dt>$term->XMoveResizeWindow ($window, $x, $y, $width, $height)</dt>
		1285	<dt>($x, $y, $child_window) = $term->XTranslateCoordinates ($src, $dst, $x, $y)</dt>
		1286	<dt>$term->XChangeInput ($window, $add_events[, $del_events])</dt>
		1287	<dd>
		1288	<p>Various X or X-related functions. The <code>$term</code> object only serves as
		1289	the source of the display, otherwise those functions map more-or-less
		1290	directory onto the X functions of the same name.</p>
		1291	</dd>
		1292	</dl>
		1293
		1294	</div>
		1295	<h2 id="The_code_urxvt_popup_code_Class">The <code>urxvt::popup</code> Class</h2>
		1296	<div id="The_code_urxvt_popup_code_Class_CONT">
		1297	<dl>
		1298	<dt>$popup->add_title ($title)</dt>
		1299	<dd>
		1300	<p>Adds a non-clickable title to the popup.</p>
		1301	</dd>
		1302	<dt>$popup->add_separator ([$sepchr])</dt>
		1303	<dd>
		1304	<p>Creates a separator, optionally using the character given as <code>$sepchr</code>.</p>
		1305	</dd>
		1306	<dt>$popup->add_button ($text, $cb)</dt>
		1307	<dd>
		1308	<p>Adds a clickable button to the popup. <code>$cb</code> is called whenever it is
		1309	selected.</p>
		1310	</dd>
		1311	<dt>$popup->add_toggle ($text, $initial_value, $cb)</dt>
		1312	<dd>
		1313	<p>Adds a toggle/checkbox item to the popup. The callback gets called
		1314	whenever it gets toggled, with a boolean indicating its new value as its
		1315	first argument.</p>
		1316	</dd>
		1317	<dt>$popup->show</dt>
		1318	<dd>
		1319	<p>Displays the popup (which is initially hidden).</p>
		1320	</dd>
		1321	</dl>
		1322
		1323	</div>
362	<h2><a name="the_urxvt__timer_class">The <code>urxvt::timer</code> Class</a></h2>	1324	<h2 id="The_code_urxvt_timer_code_Class">The <code>urxvt::timer</code> Class</h2>
		1325	<div id="The_code_urxvt_timer_code_Class_CONT">
363	<p>This class implements timer watchers/events. Time is represented as a	1326	<p>This class implements timer watchers/events. Time is represented as a
364	fractional number of seconds since the epoch. Example:</p>	1327	fractional number of seconds since the epoch. Example:</p>
365	<pre>	1328	<pre> $term->{overlay} = $term->overlay (-1, 0, 8, 1, urxvt::OVERLAY_RSTYLE, 0);
366	# create a digital clock display in upper right corner
367	$term->{timer} = urxvt::timer	1329	$term->{timer} = urxvt::timer
368	->new	1330	->new
369	->start (urxvt::NOW)	1331	->interval (1)
370	->cb (sub {	1332	->cb (sub {
371	my ($timer) = @_;
372	my $time = $timer->at;
373	$timer->start ($time + 1);
374	$self->scr_overlay (-1, 0,	1333	$term->{overlay}->set (0, 0,
375	POSIX::strftime "%H:%M:%S", localtime $time);	1334	sprintf "%2d:%02d:%02d", (localtime urxvt::NOW)[2,1,0]);
376	});</pre>	1335	});
		1336
		1337	</pre>
377	<dl>	1338	<dl>
378	<dt><strong><a name="item__24timer__3d_new_urxvt_3a_3atimer">$timer = new urxvt::timer</a></strong><br />	1339	<dt>$timer = new urxvt::timer</dt>
379	</dt>
380	<dd>	1340	<dd>
381	Create a new timer object in stopped state.	1341	<p>Create a new timer object in started state. It is scheduled to fire
		1342	immediately.</p>
382	</dd>	1343	</dd>
383	<p></p>	1344	<dt>$timer = $timer->cb (sub { my ($timer) = @_; ... })</dt>
384	<dt><strong><a name="item_cb">$timer = $timer->cb (sub { my ($timer) = @_; ... })</a></strong><br />
385	</dt>
386	<dd>	1345	<dd>
387	Set the callback to be called when the timer triggers.	1346	<p>Set the callback to be called when the timer triggers.</p>
388	</dd>	1347	</dd>
389	<p></p>	1348	<dt>$tstamp = $timer->at</dt>
390	<dt><strong><a name="item_at">$tstamp = $timer->at</a></strong><br />
391	</dt>
392	<dd>	1349	<dd>
393	Return the time this watcher will fire next.	1350	<p>Return the time this watcher will fire next.</p>
394	</dd>	1351	</dd>
395	<p></p>	1352	<dt>$timer = $timer->set ($tstamp)</dt>
396	<dt><strong><a name="item_set">$timer = $timer->set ($tstamp)</a></strong><br />
397	</dt>
398	<dd>	1353	<dd>
399	Set the time the event is generated to $tstamp.	1354	<p>Set the time the event is generated to $tstamp.</p>
400	</dd>	1355	</dd>
401	<p></p>	1356	<dt>$timer = $timer->interval ($interval)</dt>
402	<dt><strong><a name="item_start">$timer = $timer->start</a></strong><br />
403	</dt>
404	<dd>	1357	<dd>
405	Start the timer.	1358	<p>Normally (and when <code>$interval</code> is <code>0</code>), the timer will automatically
		1359	stop after it has fired once. If <code>$interval</code> is non-zero, then the timer
		1360	is automatically rescheduled at the given intervals.</p>
406	</dd>	1361	</dd>
407	<p></p>	1362	<dt>$timer = $timer->start</dt>
408	<dt><strong>$timer = $timer->start ($tstamp)</strong><br />
409	</dt>
410	<dd>	1363	<dd>
		1364	<p>Start the timer.</p>
		1365	</dd>
		1366	<dt>$timer = $timer->start ($tstamp)</dt>
		1367	<dd>
411	Set the event trigger time to <code>$tstamp</code> and start the timer.	1368	<p>Set the event trigger time to <code>$tstamp</code> and start the timer.</p>
412	</dd>	1369	</dd>
413	<p></p>	1370	<dt>$timer = $timer->after ($delay)</dt>
414	<dt><strong><a name="item_stop">$timer = $timer->stop</a></strong><br />
415	</dt>
416	<dd>	1371	<dd>
417	Stop the timer.	1372	<p>Like <code>start</code>, but sets the expiry timer to c<urxvt::NOW + $delay>.</p>
418	</dd>	1373	</dd>
419	<p></p></dl>	1374	<dt>$timer = $timer->stop</dt>
420	<p>	1375	<dd>
421	</p>	1376	<p>Stop the timer.</p>
		1377	</dd>
		1378	</dl>
		1379
		1380	</div>
422	<h2><a name="the_urxvt__iow_class">The <code>urxvt::iow</code> Class</a></h2>	1381	<h2 id="The_code_urxvt_iow_code_Class">The <code>urxvt::iow</code> Class</h2>
		1382	<div id="The_code_urxvt_iow_code_Class_CONTEN">
423	<p>This class implements io watchers/events. Example:</p>	1383	<p>This class implements io watchers/events. Example:</p>
424	<pre>
425	$term->{socket} = ...	1384	<pre> $term->{socket} = ...
426	$term->{iow} = urxvt::iow	1385	$term->{iow} = urxvt::iow
427	->new	1386	->new
428	->fd (fileno $term->{socket})	1387	->fd (fileno $term->{socket})
429	->events (1) # wait for read data	1388	->events (urxvt::EVENT_READ)
430	->start	1389	->start
431	->cb (sub {	1390	->cb (sub {
432	my ($iow, $revents) = @_;	1391	my ($iow, $revents) = @_;
433	# $revents must be 1 here, no need to check	1392	# $revents must be 1 here, no need to check
434	sysread $term->{socket}, my $buf, 8192	1393	sysread $term->{socket}, my $buf, 8192
435	or end-of-file;	1394	or end-of-file;
436	});</pre>	1395	});
		1396
		1397
		1398
		1399
		1400	</pre>
437	<dl>	1401	<dl>
438	<dt><strong><a name="item__24iow__3d_new_urxvt_3a_3aiow">$iow = new urxvt::iow</a></strong><br />	1402	<dt>$iow = new urxvt::iow</dt>
439	</dt>
440	<dd>	1403	<dd>
441	Create a new io watcher object in stopped state.	1404	<p>Create a new io watcher object in stopped state.</p>
442	</dd>	1405	</dd>
443	<p></p>
444	<dt><strong>$iow = $iow->cb (sub { my ($iow, $reventmask) = @_; ... })</strong><br />	1406	<dt>$iow = $iow->cb (sub { my ($iow, $reventmask) = @_; ... })</dt>
445	</dt>
446	<dd>	1407	<dd>
447	Set the callback to be called when io events are triggered. <code>$reventmask</code>	1408	<p>Set the callback to be called when io events are triggered. <code>$reventmask</code>
448	is a bitset as described in the <a href="#item_events"><code>events</code></a> method.	1409	is a bitset as described in the <code>events</code> method.</p>
449	</dd>	1410	</dd>
450	<p></p>	1411	<dt>$iow = $iow->fd ($fd)</dt>
451	<dt><strong><a name="item_fd">$iow = $iow->fd ($fd)</a></strong><br />
452	</dt>
453	<dd>	1412	<dd>
454	Set the filedescriptor (not handle) to watch.	1413	<p>Set the file descriptor (not handle) to watch.</p>
455	</dd>	1414	</dd>
456	<p></p>	1415	<dt>$iow = $iow->events ($eventmask)</dt>
457	<dt><strong><a name="item_events">$iow = $iow->events ($eventmask)</a></strong><br />
458	</dt>
459	<dd>	1416	<dd>
460	Set the event mask to watch. Bit #0 (value <code>1</code>) enables watching for read	1417	<p>Set the event mask to watch. The only allowed values are
461	data, Bit #1 (value <code>2</code>) enables watching for write data.	1418	<code>urxvt::EVENT_READ</code> and <code>urxvt::EVENT_WRITE</code>, which might be ORed
		1419	together, or <code>urxvt::EVENT_NONE</code>.</p>
462	</dd>	1420	</dd>
463	<p></p>	1421	<dt>$iow = $iow->start</dt>
464	<dt><strong>$iow = $iow->start</strong><br />
465	</dt>
466	<dd>	1422	<dd>
467	Start watching for requested events on the given handle.	1423	<p>Start watching for requested events on the given handle.</p>
468	</dd>	1424	</dd>
469	<p></p>	1425	<dt>$iow = $iow->stop</dt>
470	<dt><strong>$iow = $iow->stop</strong><br />
471	</dt>
472	<dd>	1426	<dd>
473	Stop watching for events on the given filehandle.	1427	<p>Stop watching for events on the given file handle.</p>
474	</dd>	1428	</dd>
475	<p></p></dl>	1429	</dl>
476	<p>	1430
		1431	</div>
		1432	<h2 id="The_code_urxvt_iw_code_Class">The <code>urxvt::iw</code> Class</h2>
		1433	<div id="The_code_urxvt_iw_code_Class_CONTENT">
		1434	<p>This class implements idle watchers, that get called automatically when
		1435	the process is idle. They should return as fast as possible, after doing
		1436	some useful work.</p>
		1437	<dl>
		1438	<dt>$iw = new urxvt::iw</dt>
		1439	<dd>
		1440	<p>Create a new idle watcher object in stopped state.</p>
		1441	</dd>
		1442	<dt>$iw = $iw->cb (sub { my ($iw) = @_; ... })</dt>
		1443	<dd>
		1444	<p>Set the callback to be called when the watcher triggers.</p>
		1445	</dd>
		1446	<dt>$timer = $timer->start</dt>
		1447	<dd>
		1448	<p>Start the watcher.</p>
		1449	</dd>
		1450	<dt>$timer = $timer->stop</dt>
		1451	<dd>
		1452	<p>Stop the watcher.</p>
		1453	</dd>
		1454	</dl>
		1455
		1456	</div>
		1457	<h2 id="The_code_urxvt_pw_code_Class">The <code>urxvt::pw</code> Class</h2>
		1458	<div id="The_code_urxvt_pw_code_Class_CONTENT">
		1459	<p>This class implements process watchers. They create an event whenever a
		1460	process exits, after which they stop automatically.</p>
		1461	<pre> my $pid = fork;
		1462	...
		1463	$term->{pw} = urxvt::pw
		1464	->new
		1465	->start ($pid)
		1466	->cb (sub {
		1467	my ($pw, $exit_status) = @_;
		1468	...
		1469	});
		1470
477	</p>	1471	</pre>
478	<hr />	1472	<dl>
479	<h1><a name="environment">ENVIRONMENT</a></h1>	1473	<dt>$pw = new urxvt::pw</dt>
480	<p>	1474	<dd>
481	</p>	1475	<p>Create a new process watcher in stopped state.</p>
482	<h2><a name="urxvt_perl_verbosity">URXVT_PERL_VERBOSITY</a></h2>	1476	</dd>
		1477	<dt>$pw = $pw->cb (sub { my ($pw, $exit_status) = @_; ... })</dt>
		1478	<dd>
		1479	<p>Set the callback to be called when the timer triggers.</p>
		1480	</dd>
		1481	<dt>$pw = $timer->start ($pid)</dt>
		1482	<dd>
		1483	<p>Tells the watcher to start watching for process <code>$pid</code>.</p>
		1484	</dd>
		1485	<dt>$pw = $pw->stop</dt>
		1486	<dd>
		1487	<p>Stop the watcher.</p>
		1488	</dd>
		1489	</dl>
		1490
		1491	</div>
		1492	<h1 id="ENVIRONMENT">ENVIRONMENT</h1><p><a href="#TOP" class="toplink">Top</a></p>
		1493	<div id="ENVIRONMENT_CONTENT">
		1494
		1495	</div>
		1496	<h2 id="URXVT_PERL_VERBOSITY">URXVT_PERL_VERBOSITY</h2>
		1497	<div id="URXVT_PERL_VERBOSITY_CONTENT">
483	<p>This variable controls the verbosity level of the perl extension. Higher	1498	<p>This variable controls the verbosity level of the perl extension. Higher
484	numbers indicate more verbose output.</p>	1499	numbers indicate more verbose output.</p>
485	<ol>	1500	<dl>
486	<li><strong><a name="item__2d_only_fatal_messages">- only fatal messages</a></strong><br />	1501	<dt>== 0 - fatal messages</dt>
		1502	<dt>>= 3 - script loading and management</dt>
		1503	<dt>>=10 - all called hooks</dt>
		1504	<dt>>=11 - hook return values</dt>
487	</li>	1505	</dl>
488	<li><strong><a name="item__2d_script_loading_and_management">- script loading and management</a></strong><br />	1506
489	</li>	1507	</div>
490	<li><strong><a name="item__2d_all_events_received">- all events received</a></strong><br />	1508	<h1 id="AUTHOR">AUTHOR</h1><p><a href="#TOP" class="toplink">Top</a></p>
491	</li>	1509	<div id="AUTHOR_CONTENT">
492	</ol>
493	<p>
494	</p>
495	<hr />
496	<h1><a name="author">AUTHOR</a></h1>
497	<pre>
498	Marc Lehmann <pcg@goof.com>	1510	<pre> Marc Lehmann <pcg@goof.com>
499	<a href="http://software.schmorp.de/pkg/rxvt-unicode">http://software.schmorp.de/pkg/rxvt-unicode</a></pre>	1511	http://software.schmorp.de/pkg/rxvt-unicode
500		1512
501	</body>	1513	</pre>
502		1514
		1515	</div>
		1516	</div></body>
503	</html>	1517	</html>

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Comparing rxvt-unicode/doc/rxvtperl.3.html (file contents):
Revision 1.5 by root, Mon Jan 2 21:41:51 2006 UTC vs.
Revision 1.52 by root, Sun Jun 24 22:12:18 2007 UTC