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1 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
2 <html xmlns="http://www.w3.org/1999/xhtml">
3 <head>
4 <title>rxvtperl - rxvt-unicode's embedded perl interpreter</title>
5 <link rev="made" href="mailto:perl-binary@plan9.de" />
6 </head>
7
8 <body style="background-color: white">
9
10 <p><a name="__index__"></a></p>
11 <!-- INDEX BEGIN -->
12
13 <ul>
14
15 <li><a href="#name">NAME</a></li>
16 <li><a href="#synopsis">SYNOPSIS</a></li>
17 <li><a href="#description">DESCRIPTION</a></li>
18 <li><a href="#prepackaged_extensions">PREPACKAGED EXTENSIONS</a></li>
19 <li><a href="#api_documentation">API DOCUMENTATION</a></li>
20 <ul>
21
22 <li><a href="#general_api_considerations">General API Considerations</a></li>
23 <li><a href="#extension_objects">Extension Objects</a></li>
24 <li><a href="#hooks">Hooks</a></li>
25 <li><a href="#variables_in_the_urxvt_package">Variables in the <code>urxvt</code> Package</a></li>
26 <li><a href="#functions_in_the_urxvt_package">Functions in the <code>urxvt</code> Package</a></li>
27 <li><a href="#rendition">RENDITION</a></li>
28 <li><a href="#the_urxvt__anyevent_class">The <code>urxvt::anyevent</code> Class</a></li>
29 <li><a href="#the_urxvt__term_class">The <code>urxvt::term</code> Class</a></li>
30 <li><a href="#the_urxvt__popup_class">The <code>urxvt::popup</code> Class</a></li>
31 <li><a href="#the_urxvt__timer_class">The <code>urxvt::timer</code> Class</a></li>
32 <li><a href="#the_urxvt__iow_class">The <code>urxvt::iow</code> Class</a></li>
33 <li><a href="#the_urxvt__iw_class">The <code>urxvt::iw</code> Class</a></li>
34 <li><a href="#the_urxvt__pw_class">The <code>urxvt::pw</code> Class</a></li>
35 </ul>
36
37 <li><a href="#environment">ENVIRONMENT</a></li>
38 <ul>
39
40 <li><a href="#urxvt_perl_verbosity">URXVT_PERL_VERBOSITY</a></li>
41 </ul>
42
43 <li><a href="#author">AUTHOR</a></li>
44 </ul>
45 <!-- INDEX END -->
46
47 <hr />
48 <p>
49 </p>
50 <hr />
51 <h1><a name="name">NAME</a></h1>
52 <p>rxvtperl - rxvt-unicode's embedded perl interpreter</p>
53 <p>
54 </p>
55 <hr />
56 <h1><a name="synopsis">SYNOPSIS</a></h1>
57 <pre>
58 # create a file grab_test in $HOME:</pre>
59 <pre>
60 sub on_sel_grab {
61 warn &quot;you selected &quot;, $_[0]-&gt;selection;
62 ()
63 }</pre>
64 <pre>
65 # start a rxvt using it:</pre>
66 <pre>
67 rxvt --perl-lib $HOME -pe grab_test</pre>
68 <p>
69 </p>
70 <hr />
71 <h1><a name="description">DESCRIPTION</a></h1>
72 <p>Everytime a terminal object gets created, extension scripts specified via
73 the <code>perl</code> resource are loaded and associated with it.</p>
74 <p>Scripts are compiled in a 'use strict' and 'use utf8' environment, and
75 thus must be encoded as UTF-8.</p>
76 <p>Each script will only ever be loaded once, even in rxvtd, where
77 scripts will be shared (but not enabled) for all terminals.</p>
78 <p>
79 </p>
80 <hr />
81 <h1><a name="prepackaged_extensions">PREPACKAGED EXTENSIONS</a></h1>
82 <p>This section describes the extensions delivered with this release. You can
83 find them in <em>/opt/rxvt/lib/urxvt/perl/</em>.</p>
84 <p>You can activate them like this:</p>
85 <pre>
86 rxvt -pe &lt;extensionname&gt;</pre>
87 <p>Or by adding them to the resource for extensions loaded by default:</p>
88 <pre>
89 URxvt.perl-ext-common: default,automove-background,selection-autotransform</pre>
90 <dl>
91 <dt><strong><a name="item_selection">selection (enabled by default)</a></strong><br />
92 </dt>
93 <dd>
94 (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 <em>ls</em> supports
98 <code>--quoting-style=shell</code>.
99 </dd>
100 <dd>
101 <p>A double-click usually selects the word under the cursor, further clicks
102 will enlarge the selection.</p>
103 </dd>
104 <dd>
105 <p>The selection works by trying to match a number of regexes and displaying
106 them in increasing order of length. You can add your own regexes by
107 specifying resources of the form:</p>
108 </dd>
109 <dd>
110 <pre>
111 URxvt.selection.pattern-0: perl-regex
112 URxvt.selection.pattern-1: perl-regex
113 ...</pre>
114 </dd>
115 <dd>
116 <p>The index number (0, 1...) must not have any holes, and each regex must
117 contain at least one pair of capturing parentheses, which will be used for
118 the match. For example, the followign adds a regex that matches everything
119 between two vertical bars:</p>
120 </dd>
121 <dd>
122 <pre>
123 URxvt.selection.pattern-0: \\|([^|]+)\\|</pre>
124 </dd>
125 <dd>
126 <p>Another example: Programs I use often output ``absolute path: '' at the
127 beginning of a line when they process multiple files. The following
128 pattern matches the filename (note, there is a single space at the very
129 end):</p>
130 </dd>
131 <dd>
132 <pre>
133 URxvt.selection.pattern-0: ^(/[^:]+):\</pre>
134 </dd>
135 <dd>
136 <p>You can look at the source of the selection extension to see more
137 interesting uses, such as parsing a line from beginning to end.</p>
138 </dd>
139 <dd>
140 <p>This extension also offers following bindable keyboard commands:</p>
141 </dd>
142 <dl>
143 <dt><strong><a name="item_rot13">rot13</a></strong><br />
144 </dt>
145 <dd>
146 Rot-13 the selection when activated. Used via keyboard trigger:
147 </dd>
148 <dd>
149 <pre>
150 URxvt.keysym.C-M-r: perl:selection:rot13</pre>
151 </dd>
152 <p></p></dl>
153 <dt><strong><a name="item_popup">option-popup (enabled by default)</a></strong><br />
154 </dt>
155 <dd>
156 Binds a popup menu to Ctrl-Button2 that lets you toggle (some) options at
157 runtime.
158 </dd>
159 <dd>
160 <p>Other extensions can extend this popup menu by pushing a code reference
161 onto <code>@{ $term-</code>{option_popup_hook} }&gt;, which gets called whenever the
162 popup is being displayed.</p>
163 </dd>
164 <dd>
165 <p>It's sole argument is the popup menu, which can be modified. It should
166 either return nothing or a string, the initial boolean value and a code
167 reference. The string will be used as button text and the code reference
168 will be called when the toggle changes, with the new boolean value as
169 first argument.</p>
170 </dd>
171 <dd>
172 <p>The following will add an entry <code>myoption</code> that changes
173 <code>$self-</code>{myoption}&gt;:</p>
174 </dd>
175 <dd>
176 <pre>
177 push @{ $self-&gt;{term}{option_popup_hook} }, sub {
178 (&quot;my option&quot; =&gt; $myoption, sub { $self-&gt;{myoption} = $_[0] })
179 };</pre>
180 </dd>
181 <p></p>
182 <dt><strong>selection-popup (enabled by default)</strong><br />
183 </dt>
184 <dd>
185 Binds a popup menu to Ctrl-Button3 that lets you convert the selection
186 text into various other formats/action (such as uri unescaping, perl
187 evaluation, web-browser starting etc.), depending on content.
188 </dd>
189 <dd>
190 <p>Other extensions can extend this popup menu by pushing a code reference
191 onto <code>@{ $term-</code>{selection_popup_hook} }&gt;, which gets called whenever the
192 popup is being displayed.</p>
193 </dd>
194 <dd>
195 <p>It's sole argument is the popup menu, which can be modified. The selection
196 is in <code>$_</code>, which can be used to decide wether to add something or not.
197 It should either return nothing or a string and a code reference. The
198 string will be used as button text and the code reference will be called
199 when the button gets activated and should transform <code>$_</code>.</p>
200 </dd>
201 <dd>
202 <p>The following will add an entry <code>a to b</code> that transforms all <code>a</code>s in
203 the selection to <code>b</code>s, but only if the selection currently contains any
204 <code>a</code>s:</p>
205 </dd>
206 <dd>
207 <pre>
208 push @{ $self-&gt;{term}{selection_popup_hook} }, sub {
209 /a/ ? (&quot;a to be&quot; =&gt; sub { s/a/b/g }
210 : ()
211 };</pre>
212 </dd>
213 <p></p>
214 <dt><strong><a name="item_searchable_2dscrollback_3chotkey_3e__28enabled_by_">searchable-scrollback&lt;hotkey&gt; (enabled by default)</a></strong><br />
215 </dt>
216 <dd>
217 Adds regex search functionality to the scrollback buffer, triggered
218 by a hotkey (default: <code>M-s</code>). While in search mode, normal terminal
219 input/output is suspended and a regex is displayed at the bottom of the
220 screen.
221 </dd>
222 <dd>
223 <p>Inputting characters appends them to the regex and continues incremental
224 search. <code>BackSpace</code> removes a character from the regex, <code>Up</code> and <code>Down</code>
225 search upwards/downwards in the scrollback buffer, <code>End</code> jumps to the
226 bottom. <code>Escape</code> leaves search mode and returns to the point where search
227 was started, while <code>Enter</code> or <code>Return</code> stay at the current position and
228 additionally stores the first match in the current line into the primary
229 selection.</p>
230 </dd>
231 <p></p>
232 <dt><strong><a name="item_readline">readline (enabled by default)</a></strong><br />
233 </dt>
234 <dd>
235 A support package that tries to make editing with readline easier. At
236 the moment, it reacts to clicking shift-left mouse button by trying to
237 move the text cursor to this position. It does so by generating as many
238 cursor-left or cursor-right keypresses as required (the this only works
239 for programs that correctly support wide characters).
240 </dd>
241 <dd>
242 <p>To avoid too many false positives, this is only done when:</p>
243 </dd>
244 <dl>
245 <dt><strong><a name="item__2d_the_tty_is_in_icanon_state_2e">- the tty is in ICANON state.</a></strong><br />
246 </dt>
247 <dt><strong><a name="item__2d_the_text_cursor_is_visible_2e">- the text cursor is visible.</a></strong><br />
248 </dt>
249 <dt><strong><a name="item__2d_the_primary_screen_is_currently_being_displaye">- the primary screen is currently being displayed.</a></strong><br />
250 </dt>
251 <dt><strong><a name="item_same">- the mouse is on the same (multi-row-) line as the text cursor.</a></strong><br />
252 </dt>
253 </dl>
254 <p>The normal selection mechanism isn't disabled, so quick successive clicks
255 might interfere with selection creation in harmless ways.</p>
256 <dt><strong><a name="item_selection_2dautotransform">selection-autotransform</a></strong><br />
257 </dt>
258 <dd>
259 This selection allows you to do automatic transforms on a selection
260 whenever a selection is made.
261 </dd>
262 <dd>
263 <p>It works by specifying perl snippets (most useful is a single <code>s///</code>
264 operator) that modify <code>$_</code> as resources:</p>
265 </dd>
266 <dd>
267 <pre>
268 URxvt.selection-autotransform.0: transform
269 URxvt.selection-autotransform.1: transform
270 ...</pre>
271 </dd>
272 <dd>
273 <p>For example, the following will transform selections of the form
274 <code>filename:number</code>, often seen in compiler messages, into <code>vi +$filename
275 $word</code>:</p>
276 </dd>
277 <dd>
278 <pre>
279 URxvt.selection-autotransform.0: s/^([^:[:space:]]+):(\\d+):?$/vi +$2 \\Q$1\\E\\x0d/</pre>
280 </dd>
281 <dd>
282 <p>And this example matches the same,but replaces it with vi-commands you can
283 paste directly into your (vi :) editor:</p>
284 </dd>
285 <dd>
286 <pre>
287 URxvt.selection-autotransform.0: s/^([^:[:space:]]+(\\d+):?$/:e \\Q$1\\E\\x0d:$2\\x0d/</pre>
288 </dd>
289 <dd>
290 <p>Of course, this can be modified to suit your needs and your editor :)</p>
291 </dd>
292 <dd>
293 <p>To expand the example above to typical perl error messages (``XXX at
294 FILENAME line YYY.''), you need a slightly more elaborate solution:</p>
295 </dd>
296 <dd>
297 <pre>
298 URxvt.selection.pattern-0: ( at .*? line \\d+[,.])
299 URxvt.selection-autotransform.0: s/^ at (.*?) line (\\d+)[,.]$/:e \\Q$1\E\\x0d:$2\\x0d/</pre>
300 </dd>
301 <dd>
302 <p>The first line tells the selection code to treat the unchanging part of
303 every error message as a selection pattern, and the second line transforms
304 the message into vi commands to load the file.</p>
305 </dd>
306 <p></p>
307 <dt><strong><a name="item_tabbed">tabbed</a></strong><br />
308 </dt>
309 <dd>
310 This transforms the terminal into a tabbar with additional terminals, that
311 is, it implements what is commonly refered to as ``tabbed terminal''. The topmost line
312 displays a ``[NEW]'' button, which, when clicked, will add a new tab, followed by one
313 button per tab.
314 </dd>
315 <dd>
316 <p>Clicking a button will activate that tab. Pressing <strong>Shift-Left</strong> and
317 <strong>Shift-Right</strong> will switch to the tab left or right of the current one,
318 while <strong>Shift-Down</strong> creates a new tab.</p>
319 </dd>
320 <dd>
321 <p>The tabbar itself can be configured similarly to a normal terminal, but
322 with a resource class of <code>URxvt.tabbed</code>. In addition, it supports the
323 following four resources (shown with defaults):</p>
324 </dd>
325 <dd>
326 <pre>
327 URxvt.tabbed.tabbar-fg: &lt;colour-index, default 3&gt;
328 URxvt.tabbed.tabbar-bg: &lt;colour-index, default 0&gt;
329 URxvt.tabbed.tab-fg: &lt;colour-index, default 0&gt;
330 URxvt.tabbed.tab-bg: &lt;colour-index, default 1&gt;</pre>
331 </dd>
332 <dd>
333 <p>See <em>COLOR AND GRAPHICS</em> in the <code>rxvt(1)</code> manpage for valid
334 indices.</p>
335 </dd>
336 <p></p>
337 <dt><strong><a name="item_mark_2durls">mark-urls</a></strong><br />
338 </dt>
339 <dd>
340 Uses per-line display filtering (<code>on_line_update</code>) to underline urls and
341 make them clickable. When middle-clicked, the program specified in the
342 resource <code>urlLauncher</code> (default <code>x-www-browser</code>) will be started with
343 the URL as first argument.
344 </dd>
345 <p></p>
346 <dt><strong><a name="item_xim_2donthespot">xim-onthespot</a></strong><br />
347 </dt>
348 <dd>
349 This (experimental) perl extension implements OnTheSpot editing. It does
350 not work perfectly, and some input methods don't seem to work well with
351 OnTheSpot editing in general, but it seems to work at leats for SCIM and
352 kinput2.
353 </dd>
354 <dd>
355 <p>You enable it by specifying this extension and a preedit style of
356 <code>OnTheSpot</code>, i.e.:</p>
357 </dd>
358 <dd>
359 <pre>
360 rxvt -pt OnTheSpot -pe xim-onthespot</pre>
361 </dd>
362 <p></p>
363 <dt><strong><a name="item_automove_2dbackground">automove-background</a></strong><br />
364 </dt>
365 <dd>
366 This is basically a one-line extension that dynamically changes the background pixmap offset
367 to the window position, in effect creating the same effect as pseudo transparency with
368 a custom pixmap. No scaling is supported in this mode. Exmaple:
369 </dd>
370 <dd>
371 <pre>
372 rxvt -pixmap background.xpm -pe automove-background</pre>
373 </dd>
374 <p></p>
375 <dt><strong><a name="item_block_2dgraphics_2dto_2dascii">block-graphics-to-ascii</a></strong><br />
376 </dt>
377 <dd>
378 A not very useful example of filtering all text output to the terminal,
379 by replacing all line-drawing characters (U+2500 .. U+259F) by a
380 similar-looking ascii character.
381 </dd>
382 <p></p>
383 <dt><strong><a name="item_digital_2dclock">digital-clock</a></strong><br />
384 </dt>
385 <dd>
386 Displays a digital clock using the built-in overlay.
387 </dd>
388 <p></p>
389 <dt><strong><a name="item_remote_2dclipboard">remote-clipboard</a></strong><br />
390 </dt>
391 <dd>
392 Somewhat of a misnomer, this extension adds two menu entries to the
393 selection popup that allows one ti run external commands to store the
394 selection somewhere and fetch it again.
395 </dd>
396 <dd>
397 <p>We use it to implement a ``distributed selection mechanism'', which just
398 means that one command uploads the file to a remote server, and another
399 reads it.</p>
400 </dd>
401 <dd>
402 <p>The commands can be set using the <code>URxvt.remote-selection.store</code> and
403 <code>URxvt.remote-selection.fetch</code> resources. The first should read the
404 selection to store from STDIN (always in UTF-8), the second should provide
405 the selection data on STDOUT (also in UTF-8).</p>
406 </dd>
407 <dd>
408 <p>The defaults (which are likely useless to you) use rsh and cat:</p>
409 </dd>
410 <dd>
411 <pre>
412 URxvt.remote-selection.store: rsh ruth 'cat &gt;/tmp/distributed-selection'
413 URxvt.remote-selection.fetch: rsh ruth 'cat /tmp/distributed-selection'</pre>
414 </dd>
415 <p></p>
416 <dt><strong><a name="item_selection_2dpastebin">selection-pastebin</a></strong><br />
417 </dt>
418 <dd>
419 This is a little rarely useful extension that Uploads the selection as
420 textfile to a remote site (or does other things). (The implementation is
421 not currently secure for use in a multiuser environment as it writes to
422 <em>/tmp</em> directly.).
423 </dd>
424 <dd>
425 <p>It listens to the <code>selection-pastebin:remote-pastebin</code> keyboard command,
426 i.e.</p>
427 </dd>
428 <dd>
429 <pre>
430 URxvt.keysym.C-M-e: perl:selection-pastebin:remote-pastebin</pre>
431 </dd>
432 <dd>
433 <p>Pressing this combination runs a command with <code>%</code> replaced by the name of
434 the textfile. This command can be set via a resource:</p>
435 </dd>
436 <dd>
437 <pre>
438 URxvt.selection-pastebin.cmd: rsync -apP % ruth:/var/www/www.ta-sa.org/files/txt/.</pre>
439 </dd>
440 <dd>
441 <p>And the default is likely not useful to anybody but the few people around
442 here :)</p>
443 </dd>
444 <dd>
445 <p>The name of the textfile is the hex encoded md5 sum of the selection, so
446 the same content should lead to the same filename.</p>
447 </dd>
448 <dd>
449 <p>After a successful upload the selection will be replaced by the text given
450 in the <code>selection-pastebin-url</code> resource (again, the % is the placeholder
451 for the filename):</p>
452 </dd>
453 <dd>
454 <pre>
455 URxvt.selection-pastebin.url: <a href="http://www.ta-sa.org/files/txt/%">http://www.ta-sa.org/files/txt/%</a></pre>
456 </dd>
457 <p></p>
458 <dt><strong><a name="item_example_2drefresh_2dhooks">example-refresh-hooks</a></strong><br />
459 </dt>
460 <dd>
461 Displays a very simple digital clock in the upper right corner of the
462 window. Illustrates overwriting the refresh callbacks to create your own
463 overlays or changes.
464 </dd>
465 <p></p></dl>
466 <p>
467 </p>
468 <hr />
469 <h1><a name="api_documentation">API DOCUMENTATION</a></h1>
470 <p>
471 </p>
472 <h2><a name="general_api_considerations">General API Considerations</a></h2>
473 <p>All objects (such as terminals, time watchers etc.) are typical
474 reference-to-hash objects. The hash can be used to store anything you
475 like. All members starting with an underscore (such as <code>_ptr</code> or
476 <code>_hook</code>) are reserved for internal uses and <strong>MUST NOT</strong> be accessed or
477 modified).</p>
478 <p>When objects are destroyed on the C++ side, the perl object hashes are
479 emptied, so its best to store related objects such as time watchers and
480 the like inside the terminal object so they get destroyed as soon as the
481 terminal is destroyed.</p>
482 <p>Argument names also often indicate the type of a parameter. Here are some
483 hints on what they mean:</p>
484 <dl>
485 <dt><strong><a name="item__24text">$text</a></strong><br />
486 </dt>
487 <dd>
488 Rxvt-unicodes special way of encoding text, where one ``unicode'' character
489 always represents one screen cell. See <a href="#item_row_t">ROW_t</a> for a discussion of this format.
490 </dd>
491 <p></p>
492 <dt><strong><a name="item__24string">$string</a></strong><br />
493 </dt>
494 <dd>
495 A perl text string, with an emphasis on <em>text</em>. It can store all unicode
496 characters and is to be distinguished with text encoded in a specific
497 encoding (often locale-specific) and binary data.
498 </dd>
499 <p></p>
500 <dt><strong><a name="item__24octets">$octets</a></strong><br />
501 </dt>
502 <dd>
503 Either binary data or - more common - a text string encoded in a
504 locale-specific way.
505 </dd>
506 <p></p></dl>
507 <p>
508 </p>
509 <h2><a name="extension_objects">Extension Objects</a></h2>
510 <p>Very perl extension is a perl class. A separate perl object is created
511 for each terminal and each extension and passed as the first parameter to
512 hooks. So extensions can use their <code>$self</code> object without having to think
513 about other extensions, with the exception of methods and members that
514 begin with an underscore character <code>_</code>: these are reserved for internal
515 use.</p>
516 <p>Although it isn't a <code>urxvt::term</code> object, you can call all methods of the
517 <code>urxvt::term</code> class on this object.</p>
518 <p>It has the following methods and data members:</p>
519 <dl>
520 <dt><strong><a name="item__24urxvt_term__3d__24self_2d_3e_7bterm_7d">$urxvt_term = $self-&gt;{term}</a></strong><br />
521 </dt>
522 <dd>
523 Returns the <code>urxvt::term</code> object associated with this instance of the
524 extension. This member <em>must not</em> be changed in any way.
525 </dd>
526 <p></p>
527 <dt><strong><a name="item_enable">$self-&gt;enable ($hook_name =&gt; $cb, [$hook_name =&gt; $cb..])</a></strong><br />
528 </dt>
529 <dd>
530 Dynamically enable the given hooks (named without the <code>on_</code> prefix) for
531 this extension, replacing any previous hook. This is useful when you want
532 to overwrite time-critical hooks only temporarily.
533 </dd>
534 <p></p>
535 <dt><strong><a name="item_disable">$self-&gt;disable ($hook_name[, $hook_name..])</a></strong><br />
536 </dt>
537 <dd>
538 Dynamically disable the given hooks.
539 </dd>
540 <p></p></dl>
541 <p>
542 </p>
543 <h2><a name="hooks">Hooks</a></h2>
544 <p>The following subroutines can be declared in extension files, and will be
545 called whenever the relevant event happens.</p>
546 <p>The first argument passed to them is an extension oject as described in
547 the in the <code>Extension Objects</code> section.</p>
548 <p><strong>All</strong> of these hooks must return a boolean value. If any of the called
549 hooks returns true, then the event counts as being <em>consumed</em>, and the
550 relevant action might not be carried out by the C++ code.</p>
551 <p><em>When in doubt, return a false value (preferably <code>()</code>). </em>&gt;</p>
552 <dl>
553 <dt><strong><a name="item_on_init__24term">on_init $term</a></strong><br />
554 </dt>
555 <dd>
556 Called after a new terminal object has been initialized, but before
557 windows are created or the command gets run. Most methods are unsafe to
558 call or deliver senseless data, as terminal size and other characteristics
559 have not yet been determined. You can safely query and change resources
560 and options, though. For many purposes the <code>on_start</code> hook is a better
561 place.
562 </dd>
563 <p></p>
564 <dt><strong><a name="item_on_start__24term">on_start $term</a></strong><br />
565 </dt>
566 <dd>
567 Called at the very end of initialisation of a new terminal, just before
568 trying to map (display) the toplevel and returning to the mainloop.
569 </dd>
570 <p></p>
571 <dt><strong><a name="item_on_destroy__24term">on_destroy $term</a></strong><br />
572 </dt>
573 <dd>
574 Called whenever something tries to destroy terminal, when the terminal is
575 still fully functional (not for long, though).
576 </dd>
577 <p></p>
578 <dt><strong><a name="item_on_reset__24term">on_reset $term</a></strong><br />
579 </dt>
580 <dd>
581 Called after the screen is ``reset'' for any reason, such as resizing or
582 control sequences. Here is where you can react on changes to size-related
583 variables.
584 </dd>
585 <p></p>
586 <dt><strong><a name="item_on_child_start__24term_2c__24pid">on_child_start $term, $pid</a></strong><br />
587 </dt>
588 <dd>
589 Called just after the child process has been <code>fork</code>ed.
590 </dd>
591 <p></p>
592 <dt><strong><a name="item_on_child_exit__24term_2c__24status">on_child_exit $term, $status</a></strong><br />
593 </dt>
594 <dd>
595 Called just after the child process has exited. <code>$status</code> is the status
596 from <code>waitpid</code>.
597 </dd>
598 <p></p>
599 <dt><strong><a name="item_on_sel_make__24term_2c__24eventtime">on_sel_make $term, $eventtime</a></strong><br />
600 </dt>
601 <dd>
602 Called whenever a selection has been made by the user, but before the
603 selection text is copied, so changes to the beginning, end or type of the
604 selection will be honored.
605 </dd>
606 <dd>
607 <p>Returning a true value aborts selection making by urxvt, in which case you
608 have to make a selection yourself by calling <a href="#item_selection_grab"><code>$term-&gt;selection_grab</code></a>.</p>
609 </dd>
610 <p></p>
611 <dt><strong><a name="item_on_sel_grab__24term_2c__24eventtime">on_sel_grab $term, $eventtime</a></strong><br />
612 </dt>
613 <dd>
614 Called whenever a selection has been copied, but before the selection is
615 requested from the server. The selection text can be queried and changed
616 by calling <a href="#item_selection"><code>$term-&gt;selection</code></a>.
617 </dd>
618 <dd>
619 <p>Returning a true value aborts selection grabbing. It will still be hilighted.</p>
620 </dd>
621 <p></p>
622 <dt><strong><a name="item_on_sel_extend__24term">on_sel_extend $term</a></strong><br />
623 </dt>
624 <dd>
625 Called whenever the user tries to extend the selection (e.g. with a double
626 click) and is either supposed to return false (normal operation), or
627 should extend the selection itelf and return true to suppress the built-in
628 processing. This can happen multiple times, as long as the callback
629 returns true, it will be called on every further click by the user and is
630 supposed to enlarge the selection more and more, if possible.
631 </dd>
632 <dd>
633 <p>See the <em>selection</em> example extension.</p>
634 </dd>
635 <p></p>
636 <dt><strong><a name="item_on_view_change__24term_2c__24offset">on_view_change $term, $offset</a></strong><br />
637 </dt>
638 <dd>
639 Called whenever the view offset changes, i..e the user or program
640 scrolls. Offset <code>0</code> means display the normal terminal, positive values
641 show this many lines of scrollback.
642 </dd>
643 <p></p>
644 <dt><strong><a name="item_on_scroll_back__24term_2c__24lines_2c__24saved">on_scroll_back $term, $lines, $saved</a></strong><br />
645 </dt>
646 <dd>
647 Called whenever lines scroll out of the terminal area into the scrollback
648 buffer. <code>$lines</code> is the number of lines scrolled out and may be larger
649 than the scroll back buffer or the terminal.
650 </dd>
651 <dd>
652 <p>It is called before lines are scrolled out (so rows 0 .. min ($lines - 1,
653 $nrow - 1) represent the lines to be scrolled out). <code>$saved</code> is the total
654 number of lines that will be in the scrollback buffer.</p>
655 </dd>
656 <p></p>
657 <dt><strong><a name="item_on_osc_seq__24term_2c__24string">on_osc_seq $term, $string</a></strong><br />
658 </dt>
659 <dd>
660 Called whenever the <strong>ESC ] 777 ; string ST</strong> command sequence (OSC =
661 operating system command) is processed. Cursor position and other state
662 information is up-to-date when this happens. For interoperability, the
663 string should start with the extension name and a colon, to distinguish
664 it from commands for other extensions, and this might be enforced in the
665 future.
666 </dd>
667 <dd>
668 <p>Be careful not ever to trust (in a security sense) the data you receive,
669 as its source can not easily be controleld (e-mail content, messages from
670 other users on the same system etc.).</p>
671 </dd>
672 <p></p>
673 <dt><strong><a name="item_on_add_lines__24term_2c__24string">on_add_lines $term, $string</a></strong><br />
674 </dt>
675 <dd>
676 Called whenever text is about to be output, with the text as argument. You
677 can filter/change and output the text yourself by returning a true value
678 and calling <a href="#item_scr_add_lines"><code>$term-&gt;scr_add_lines</code></a> yourself. Please note that this
679 might be very slow, however, as your hook is called for <strong>all</strong> text being
680 output.
681 </dd>
682 <p></p>
683 <dt><strong><a name="item_on_tt_write__24term_2c__24octets">on_tt_write $term, $octets</a></strong><br />
684 </dt>
685 <dd>
686 Called whenever some data is written to the tty/pty and can be used to
687 suppress or filter tty input.
688 </dd>
689 <p></p>
690 <dt><strong><a name="item_on_line_update__24term_2c__24row">on_line_update $term, $row</a></strong><br />
691 </dt>
692 <dd>
693 Called whenever a line was updated or changed. Can be used to filter
694 screen output (e.g. underline urls or other useless stuff). Only lines
695 that are being shown will be filtered, and, due to performance reasons,
696 not always immediately.
697 </dd>
698 <dd>
699 <p>The row number is always the topmost row of the line if the line spans
700 multiple rows.</p>
701 </dd>
702 <dd>
703 <p>Please note that, if you change the line, then the hook might get called
704 later with the already-modified line (e.g. if unrelated parts change), so
705 you cannot just toggle rendition bits, but only set them.</p>
706 </dd>
707 <p></p>
708 <dt><strong><a name="item_on_refresh_begin__24term">on_refresh_begin $term</a></strong><br />
709 </dt>
710 <dd>
711 Called just before the screen gets redrawn. Can be used for overlay
712 or similar effects by modify terminal contents in refresh_begin, and
713 restoring them in refresh_end. The built-in overlay and selection display
714 code is run after this hook, and takes precedence.
715 </dd>
716 <p></p>
717 <dt><strong><a name="item_on_refresh_end__24term">on_refresh_end $term</a></strong><br />
718 </dt>
719 <dd>
720 Called just after the screen gets redrawn. See <code>on_refresh_begin</code>.
721 </dd>
722 <p></p>
723 <dt><strong><a name="item_on_user_command__24term_2c__24string">on_user_command $term, $string</a></strong><br />
724 </dt>
725 <dd>
726 Called whenever the a user-configured event is being activated (e.g. via
727 a <code>perl:string</code> action bound to a key, see description of the <strong>keysym</strong>
728 resource in the <code>rxvt(1)</code> manpage).
729 </dd>
730 <dd>
731 <p>The event is simply the action string. This interface is assumed to change
732 slightly in the future.</p>
733 </dd>
734 <p></p>
735 <dt><strong><a name="item_on_resize_all_windows__24tern_2c__24new_width_2c__">on_resize_all_windows $tern, $new_width, $new_height</a></strong><br />
736 </dt>
737 <dd>
738 Called just after the new window size has been calculcated, but before
739 windows are actually being resized or hints are being set. If this hook
740 returns TRUE, setting of the window hints is being skipped.
741 </dd>
742 <p></p>
743 <dt><strong><a name="item_on_x_event__24term_2c__24event">on_x_event $term, $event</a></strong><br />
744 </dt>
745 <dd>
746 Called on every X event received on the vt window (and possibly other
747 windows). Should only be used as a last resort. Most event structure
748 members are not passed.
749 </dd>
750 <p></p>
751 <dt><strong><a name="item_on_focus_in__24term">on_focus_in $term</a></strong><br />
752 </dt>
753 <dd>
754 Called whenever the window gets the keyboard focus, before rxvt-unicode
755 does focus in processing.
756 </dd>
757 <p></p>
758 <dt><strong><a name="item_on_focus_out__24term">on_focus_out $term</a></strong><br />
759 </dt>
760 <dd>
761 Called wheneever the window loses keyboard focus, before rxvt-unicode does
762 focus out processing.
763 </dd>
764 <p></p>
765 <dt><strong><a name="item_on_configure_notify__24term_2c__24event">on_configure_notify $term, $event</a></strong><br />
766 </dt>
767 <dt><strong><a name="item_on_property_notify__24term_2c__24event">on_property_notify $term, $event</a></strong><br />
768 </dt>
769 <dt><strong><a name="item_on_key_press__24term_2c__24event_2c__24keysym_2c__">on_key_press $term, $event, $keysym, $octets</a></strong><br />
770 </dt>
771 <dt><strong><a name="item_on_key_release__24term_2c__24event_2c__24keysym">on_key_release $term, $event, $keysym</a></strong><br />
772 </dt>
773 <dt><strong><a name="item_on_button_press__24term_2c__24event">on_button_press $term, $event</a></strong><br />
774 </dt>
775 <dt><strong><a name="item_on_button_release__24term_2c__24event">on_button_release $term, $event</a></strong><br />
776 </dt>
777 <dt><strong><a name="item_on_motion_notify__24term_2c__24event">on_motion_notify $term, $event</a></strong><br />
778 </dt>
779 <dt><strong><a name="item_on_map_notify__24term_2c__24event">on_map_notify $term, $event</a></strong><br />
780 </dt>
781 <dt><strong><a name="item_on_unmap_notify__24term_2c__24event">on_unmap_notify $term, $event</a></strong><br />
782 </dt>
783 <dd>
784 Called whenever the corresponding X event is received for the terminal If
785 the hook returns true, then the even will be ignored by rxvt-unicode.
786 </dd>
787 <dd>
788 <p>The event is a hash with most values as named by Xlib (see the XEvent
789 manpage), with the additional members <code>row</code> and <code>col</code>, which are the
790 (real, not screen-based) row and column under the mouse cursor.</p>
791 </dd>
792 <dd>
793 <p><code>on_key_press</code> additionally receives the string rxvt-unicode would
794 output, if any, in locale-specific encoding.</p>
795 </dd>
796 <dd>
797 <p>subwindow.</p>
798 </dd>
799 <p></p>
800 <dt><strong><a name="item_on_client_message__24term_2c__24event">on_client_message $term, $event</a></strong><br />
801 </dt>
802 <dt><strong><a name="item_on_wm_protocols__24term_2c__24event">on_wm_protocols $term, $event</a></strong><br />
803 </dt>
804 <dt><strong><a name="item_on_wm_delete_window__24term_2c__24event">on_wm_delete_window $term, $event</a></strong><br />
805 </dt>
806 <dd>
807 Called when various types of ClientMessage events are received (all with
808 format=32, WM_PROTOCOLS or WM_PROTOCOLS:WM_DELETE_WINDOW).
809 </dd>
810 <p></p></dl>
811 <p>
812 </p>
813 <h2><a name="variables_in_the_urxvt_package">Variables in the <code>urxvt</code> Package</a></h2>
814 <dl>
815 <dt><strong><a name="item__24urxvt_3a_3alibdir">$urxvt::LIBDIR</a></strong><br />
816 </dt>
817 <dd>
818 The rxvt-unicode library directory, where, among other things, the perl
819 modules and scripts are stored.
820 </dd>
821 <p></p>
822 <dt><strong><a name="item__24urxvt_3a_3aresclass_2c__24urxvt_3a_3aresclass">$urxvt::RESCLASS, $urxvt::RESCLASS</a></strong><br />
823 </dt>
824 <dd>
825 The resource class and name rxvt-unicode uses to look up X resources.
826 </dd>
827 <p></p>
828 <dt><strong><a name="item__24urxvt_3a_3arxvtname">$urxvt::RXVTNAME</a></strong><br />
829 </dt>
830 <dd>
831 The basename of the installed binaries, usually <code>urxvt</code>.
832 </dd>
833 <p></p>
834 <dt><strong><a name="item__24urxvt_3a_3aterm">$urxvt::TERM</a></strong><br />
835 </dt>
836 <dd>
837 The current terminal. This variable stores the current <code>urxvt::term</code>
838 object, whenever a callback/hook is executing.
839 </dd>
840 <p></p>
841 <dt><strong><a name="item__40urxvt_3a_3aterm_init">@urxvt::TERM_INIT</a></strong><br />
842 </dt>
843 <dd>
844 All coderefs in this array will be called as methods of the next newly
845 created <code>urxvt::term</code> object (during the <code>on_init</code> phase). The array
846 gets cleared before the codereferences that were in it are being executed,
847 so coderefs can push themselves onto it again if they so desire.
848 </dd>
849 <dd>
850 <p>This complements to the perl-eval commandline option, but gets executed
851 first.</p>
852 </dd>
853 <p></p>
854 <dt><strong><a name="item__40urxvt_3a_3aterm_ext">@urxvt::TERM_EXT</a></strong><br />
855 </dt>
856 <dd>
857 Works similar to <code>@TERM_INIT</code>, but contains perl package/class names, which
858 get registered as normal extensions after calling the hooks in <code>@TERM_INIT</code>
859 but before other extensions. Gets cleared just like <code>@TERM_INIT</code>.
860 </dd>
861 <p></p></dl>
862 <p>
863 </p>
864 <h2><a name="functions_in_the_urxvt_package">Functions in the <code>urxvt</code> Package</a></h2>
865 <dl>
866 <dt><strong><a name="item_urxvt_3a_3afatal__24errormessage">urxvt::fatal $errormessage</a></strong><br />
867 </dt>
868 <dd>
869 Fatally aborts execution with the given error message. Avoid at all
870 costs! The only time this is acceptable is when the terminal process
871 starts up.
872 </dd>
873 <p></p>
874 <dt><strong><a name="item_urxvt_3a_3awarn__24string">urxvt::warn $string</a></strong><br />
875 </dt>
876 <dd>
877 Calls <code>rxvt_warn</code> with the given string which should not include a
878 newline. The module also overwrites the <code>warn</code> builtin with a function
879 that calls this function.
880 </dd>
881 <dd>
882 <p>Using this function has the advantage that its output ends up in the
883 correct place, e.g. on stderr of the connecting urxvtc client.</p>
884 </dd>
885 <dd>
886 <p>Messages have a size limit of 1023 bytes currently.</p>
887 </dd>
888 <p></p>
889 <dt><strong><a name="item__40terms__3d_urxvt_3a_3atermlist">@terms = urxvt::termlist</a></strong><br />
890 </dt>
891 <dd>
892 Returns all urxvt::term objects that exist in this process, regardless of
893 wether they are started, being destroyed etc., so be careful. Only term
894 objects that have perl extensions attached will be returned (because there
895 is no urxvt::term objet associated with others).
896 </dd>
897 <p></p>
898 <dt><strong><a name="item__24time__3d_urxvt_3a_3anow">$time = urxvt::NOW</a></strong><br />
899 </dt>
900 <dd>
901 Returns the ``current time'' (as per the event loop).
902 </dd>
903 <p></p>
904 <dt><strong><a name="item_urxvt_3a_3acurrenttime">urxvt::CurrentTime</a></strong><br />
905 </dt>
906 <dt><strong><a name="item_urxvt_3a_3ashiftmask_2c_lockmask_2c_controlmask_2c">urxvt::ShiftMask, LockMask, ControlMask, Mod1Mask, Mod2Mask,
907 Mod3Mask, Mod4Mask, Mod5Mask, Button1Mask, Button2Mask, Button3Mask,
908 Button4Mask, Button5Mask, AnyModifier</a></strong><br />
909 </dt>
910 <dt><strong><a name="item_urxvt_3a_3anoeventmask_2c_keypressmask_2c_keyrelea">urxvt::NoEventMask, KeyPressMask, KeyReleaseMask,
911 ButtonPressMask, ButtonReleaseMask, EnterWindowMask, LeaveWindowMask,
912 PointerMotionMask, PointerMotionHintMask, Button1MotionMask, Button2MotionMask,
913 Button3MotionMask, Button4MotionMask, Button5MotionMask, ButtonMotionMask,
914 KeymapStateMask, ExposureMask, VisibilityChangeMask, StructureNotifyMask,
915 ResizeRedirectMask, SubstructureNotifyMask, SubstructureRedirectMask,
916 FocusChangeMask, PropertyChangeMask, ColormapChangeMask, OwnerGrabButtonMask</a></strong><br />
917 </dt>
918 <dt><strong><a name="item_urxvt_3a_3akeypress_2c_keyrelease_2c_buttonpress_2">urxvt::KeyPress, KeyRelease, ButtonPress, ButtonRelease, MotionNotify,
919 EnterNotify, LeaveNotify, FocusIn, FocusOut, KeymapNotify, Expose,
920 GraphicsExpose, NoExpose, VisibilityNotify, CreateNotify, DestroyNotify,
921 UnmapNotify, MapNotify, MapRequest, ReparentNotify, ConfigureNotify,
922 ConfigureRequest, GravityNotify, ResizeRequest, CirculateNotify,
923 CirculateRequest, PropertyNotify, SelectionClear, SelectionRequest,
924 SelectionNotify, ColormapNotify, ClientMessage, MappingNotify</a></strong><br />
925 </dt>
926 <dd>
927 Various constants for use in X calls and event processing.
928 </dd>
929 <p></p></dl>
930 <p>
931 </p>
932 <h2><a name="rendition">RENDITION</a></h2>
933 <p>Rendition bitsets contain information about colour, font, font styles and
934 similar information for each screen cell.</p>
935 <p>The following ``macros'' deal with changes in rendition sets. You should
936 never just create a bitset, you should always modify an existing one,
937 as they contain important information required for correct operation of
938 rxvt-unicode.</p>
939 <dl>
940 <dt><strong><a name="item__24rend__3d_urxvt_3a_3adefault_rstyle">$rend = urxvt::DEFAULT_RSTYLE</a></strong><br />
941 </dt>
942 <dd>
943 Returns the default rendition, as used when the terminal is starting up or
944 being reset. Useful as a base to start when creating renditions.
945 </dd>
946 <p></p>
947 <dt><strong><a name="item__24rend__3d_urxvt_3a_3aoverlay_rstyle">$rend = urxvt::OVERLAY_RSTYLE</a></strong><br />
948 </dt>
949 <dd>
950 Return the rendition mask used for overlays by default.
951 </dd>
952 <p></p>
953 <dt><strong><a name="item__24rendbit__3d_urxvt_3a_3ars_bold_2c_rs_italic_2c_">$rendbit = urxvt::RS_Bold, RS_Italic, RS_Blink, RS_RVid, RS_Uline</a></strong><br />
954 </dt>
955 <dd>
956 Return the bit that enabled bold, italic, blink, reverse-video and
957 underline, respectively. To enable such a style, just logically OR it into
958 the bitset.
959 </dd>
960 <p></p>
961 <dt><strong><a name="item__24foreground__3d_urxvt_3a_3aget_basefg__24rend">$foreground = urxvt::GET_BASEFG $rend</a></strong><br />
962 </dt>
963 <dt><strong><a name="item__24background__3d_urxvt_3a_3aget_basebg__24rend">$background = urxvt::GET_BASEBG $rend</a></strong><br />
964 </dt>
965 <dd>
966 Return the foreground/background colour index, respectively.
967 </dd>
968 <p></p>
969 <dt><strong><a name="item__24rend__3d_urxvt_3a_3aset_fgcolor__24rend_2c__24n">$rend = urxvt::SET_FGCOLOR $rend, $new_colour</a></strong><br />
970 </dt>
971 <dt><strong><a name="item__24rend__3d_urxvt_3a_3aset_bgcolor__24rend_2c__24n">$rend = urxvt::SET_BGCOLOR $rend, $new_colour</a></strong><br />
972 </dt>
973 <dt><strong><a name="item__24rend__3d_urxvt_3a_3aset_color__24rend_2c__24new">$rend = urxvt::SET_COLOR $rend, $new_fg, $new_bg</a></strong><br />
974 </dt>
975 <dd>
976 Replace the foreground/background colour in the rendition mask with the
977 specified one.
978 </dd>
979 <p></p>
980 <dt><strong><a name="item__24value__3d_urxvt_3a_3aget_custom__24rend">$value = urxvt::GET_CUSTOM $rend</a></strong><br />
981 </dt>
982 <dd>
983 Return the ``custom'' value: Every rendition has 5 bits for use by
984 extensions. They can be set and changed as you like and are initially
985 zero.
986 </dd>
987 <p></p>
988 <dt><strong><a name="item__24rend__3d_urxvt_3a_3aset_custom__24rend_2c__24ne">$rend = urxvt::SET_CUSTOM $rend, $new_value</a></strong><br />
989 </dt>
990 <dd>
991 Change the custom value.
992 </dd>
993 <p></p></dl>
994 <p>
995 </p>
996 <h2><a name="the_urxvt__anyevent_class">The <code>urxvt::anyevent</code> Class</a></h2>
997 <p>The sole purpose of this class is to deliver an interface to the
998 <code>AnyEvent</code> module - any module using it will work inside urxvt without
999 further programming. The only exception is that you cannot wait on
1000 condition variables, but non-blocking condvar use is ok. What this means
1001 is that you cannot use blocking APIs, but the non-blocking variant should
1002 work.</p>
1003 <p>
1004 </p>
1005 <h2><a name="the_urxvt__term_class">The <code>urxvt::term</code> Class</a></h2>
1006 <dl>
1007 <dt><strong><a name="item__24term__3d_new_urxvt_3a_3aterm__24envhashref_2c__">$term = new urxvt::term $envhashref, $rxvtname, [arg...]</a></strong><br />
1008 </dt>
1009 <dd>
1010 Creates a new terminal, very similar as if you had started it with system
1011 <code>$rxvtname, arg...</code>. <code>$envhashref</code> must be a reference to a <code>%ENV</code>-like
1012 hash which defines the environment of the new terminal.
1013 </dd>
1014 <dd>
1015 <p>Croaks (and probably outputs an error message) if the new instance
1016 couldn't be created. Returns <code>undef</code> if the new instance didn't
1017 initialise perl, and the terminal object otherwise. The <code>init</code> and
1018 <a href="#item_start"><code>start</code></a> hooks will be called before this call returns, and are free to
1019 refer to global data (which is race free).</p>
1020 </dd>
1021 <p></p>
1022 <dt><strong><a name="item_destroy">$term-&gt;destroy</a></strong><br />
1023 </dt>
1024 <dd>
1025 Destroy the terminal object (close the window, free resources
1026 etc.). Please note that rxvt will not exit as long as any event
1027 watchers (timers, io watchers) are still active.
1028 </dd>
1029 <p></p>
1030 <dt><strong><a name="item_exec_async">$term-&gt;exec_async ($cmd[, @args])</a></strong><br />
1031 </dt>
1032 <dd>
1033 Works like the combination of the <code>fork</code>/<code>exec</code> builtins, which executes
1034 (``starts'') programs in the background. This function takes care of setting
1035 the user environment before exec'ing the command (e.g. <code>PATH</code>) and should
1036 be preferred over explicit calls to <code>exec</code> or <code>system</code>.
1037 </dd>
1038 <dd>
1039 <p>Returns the pid of the subprocess or <code>undef</code> on error.</p>
1040 </dd>
1041 <p></p>
1042 <dt><strong><a name="item_option">$isset = $term-&gt;option ($optval[, $set])</a></strong><br />
1043 </dt>
1044 <dd>
1045 Returns true if the option specified by <code>$optval</code> is enabled, and
1046 optionally change it. All option values are stored by name in the hash
1047 <code>%urxvt::OPTION</code>. Options not enabled in this binary are not in the hash.
1048 </dd>
1049 <dd>
1050 <p>Here is a a likely non-exhaustive list of option names, please see the
1051 source file <em>/src/optinc.h</em> to see the actual list:</p>
1052 </dd>
1053 <dd>
1054 <pre>
1055 borderLess console cursorBlink cursorUnderline hold iconic insecure
1056 intensityStyles jumpScroll loginShell mapAlert meta8 mouseWheelScrollPage
1057 override-redirect pastableTabs pointerBlank reverseVideo scrollBar
1058 scrollBar_floating scrollBar_right scrollTtyKeypress scrollTtyOutput
1059 scrollWithBuffer secondaryScreen secondaryScroll skipBuiltinGlyphs
1060 transparent tripleclickwords utmpInhibit visualBell</pre>
1061 </dd>
1062 <p></p>
1063 <dt><strong><a name="item_resource">$value = $term-&gt;resource ($name[, $newval])</a></strong><br />
1064 </dt>
1065 <dd>
1066 Returns the current resource value associated with a given name and
1067 optionally sets a new value. Setting values is most useful in the <code>init</code>
1068 hook. Unset resources are returned and accepted as <code>undef</code>.
1069 </dd>
1070 <dd>
1071 <p>The new value must be properly encoded to a suitable character encoding
1072 before passing it to this method. Similarly, the returned value may need
1073 to be converted from the used encoding to text.</p>
1074 </dd>
1075 <dd>
1076 <p>Resource names are as defined in <em>src/rsinc.h</em>. Colours can be specified
1077 as resource names of the form <code>color+&lt;index&gt;</code>, e.g. <code>color+5</code>. (will
1078 likely change).</p>
1079 </dd>
1080 <dd>
1081 <p>Please note that resource strings will currently only be freed when the
1082 terminal is destroyed, so changing options frequently will eat memory.</p>
1083 </dd>
1084 <dd>
1085 <p>Here is a a likely non-exhaustive list of resource names, not all of which
1086 are supported in every build, please see the source file <em>/src/rsinc.h</em>
1087 to see the actual list:</p>
1088 </dd>
1089 <dd>
1090 <pre>
1091 answerbackstring backgroundPixmap backspace_key boldFont boldItalicFont
1092 borderLess color cursorBlink cursorUnderline cutchars delete_key
1093 display_name embed ext_bwidth fade font geometry hold iconName
1094 imFont imLocale inputMethod insecure int_bwidth intensityStyles
1095 italicFont jumpScroll lineSpace loginShell mapAlert meta8 modifier
1096 mouseWheelScrollPage name override_redirect pastableTabs path perl_eval
1097 perl_ext_1 perl_ext_2 perl_lib pointerBlank pointerBlankDelay
1098 preeditType print_pipe pty_fd reverseVideo saveLines scrollBar
1099 scrollBar_align scrollBar_floating scrollBar_right scrollBar_thickness
1100 scrollTtyKeypress scrollTtyOutput scrollWithBuffer scrollstyle
1101 secondaryScreen secondaryScroll selectstyle shade term_name title
1102 transient_for transparent transparent_all tripleclickwords utmpInhibit
1103 visualBell</pre>
1104 </dd>
1105 <p></p>
1106 <dt><strong><a name="item_x_resource">$value = $term-&gt;x_resource ($pattern)</a></strong><br />
1107 </dt>
1108 <dd>
1109 Returns the X-Resource for the given pattern, excluding the program or
1110 class name, i.e. <a href="#item_x_resource"><code>$term-&gt;x_resource (&quot;boldFont&quot;)</code></a> should return the
1111 same value as used by this instance of rxvt-unicode. Returns <code>undef</code> if no
1112 resource with that pattern exists.
1113 </dd>
1114 <dd>
1115 <p>This method should only be called during the <code>on_start</code> hook, as there is
1116 only one resource database per display, and later invocations might return
1117 the wrong resources.</p>
1118 </dd>
1119 <p></p>
1120 <dt><strong><a name="item_parse_keysym">$success = $term-&gt;parse_keysym ($keysym_spec, $command_string)</a></strong><br />
1121 </dt>
1122 <dd>
1123 Adds a keymap translation exactly as specified via a resource. See the
1124 <code>keysym</code> resource in the <code>rxvt(1)</code> manpage.
1125 </dd>
1126 <p></p>
1127 <dt><strong><a name="item_rstyle">$rend = $term-&gt;rstyle ([$new_rstyle])</a></strong><br />
1128 </dt>
1129 <dd>
1130 Return and optionally change the current rendition. Text that is output by
1131 the terminal application will use this style.
1132 </dd>
1133 <p></p>
1134 <dt><strong><a name="item_screen_cur">($row, $col) = $term-&gt;screen_cur ([$row, $col])</a></strong><br />
1135 </dt>
1136 <dd>
1137 Return the current coordinates of the text cursor position and optionally
1138 set it (which is usually bad as applications don't expect that).
1139 </dd>
1140 <p></p>
1141 <dt><strong><a name="item_selection_mark">($row, $col) = $term-&gt;selection_mark ([$row, $col])</a></strong><br />
1142 </dt>
1143 <dt><strong><a name="item_selection_beg">($row, $col) = $term-&gt;selection_beg ([$row, $col])</a></strong><br />
1144 </dt>
1145 <dt><strong><a name="item_selection_end">($row, $col) = $term-&gt;selection_end ([$row, $col])</a></strong><br />
1146 </dt>
1147 <dd>
1148 Return the current values of the selection mark, begin or end positions,
1149 and optionally set them to new values.
1150 </dd>
1151 <p></p>
1152 <dt><strong><a name="item_selection_make">$term-&gt;selection_make ($eventtime[, $rectangular])</a></strong><br />
1153 </dt>
1154 <dd>
1155 Tries to make a selection as set by <a href="#item_selection_beg"><code>selection_beg</code></a> and
1156 <a href="#item_selection_end"><code>selection_end</code></a>. If <code>$rectangular</code> is true (default: false), a
1157 rectangular selection will be made. This is the prefered function to make
1158 a selection.
1159 </dd>
1160 <p></p>
1161 <dt><strong><a name="item_selection_grab">$success = $term-&gt;selection_grab ($eventtime)</a></strong><br />
1162 </dt>
1163 <dd>
1164 Try to request the primary selection text from the server (for example, as
1165 set by the next method). No visual feedback will be given. This function
1166 is mostly useful from within <code>on_sel_grab</code> hooks.
1167 </dd>
1168 <p></p>
1169 <dt><strong>$oldtext = $term-&gt;selection ([$newtext])</strong><br />
1170 </dt>
1171 <dd>
1172 Return the current selection text and optionally replace it by <code>$newtext</code>.
1173 </dd>
1174 <p></p>
1175 <dt><strong><a name="item_overlay_simple">$term-&gt;overlay_simple ($x, $y, $text)</a></strong><br />
1176 </dt>
1177 <dd>
1178 Create a simple multi-line overlay box. See the next method for details.
1179 </dd>
1180 <p></p>
1181 <dt><strong><a name="item_overlay">$term-&gt;overlay ($x, $y, $width, $height[, $rstyle[, $border]])</a></strong><br />
1182 </dt>
1183 <dd>
1184 Create a new (empty) overlay at the given position with the given
1185 width/height. <code>$rstyle</code> defines the initial rendition style
1186 (default: <code>OVERLAY_RSTYLE</code>).
1187 </dd>
1188 <dd>
1189 <p>If <code>$border</code> is <code>2</code> (default), then a decorative border will be put
1190 around the box.</p>
1191 </dd>
1192 <dd>
1193 <p>If either <code>$x</code> or <code>$y</code> is negative, then this is counted from the
1194 right/bottom side, respectively.</p>
1195 </dd>
1196 <dd>
1197 <p>This method returns an urxvt::overlay object. The overlay will be visible
1198 as long as the perl object is referenced.</p>
1199 </dd>
1200 <dd>
1201 <p>The methods currently supported on <code>urxvt::overlay</code> objects are:</p>
1202 </dd>
1203 <dl>
1204 <dt><strong><a name="item_set">$overlay-&gt;set ($x, $y, $text, $rend)</a></strong><br />
1205 </dt>
1206 <dd>
1207 Similar to <a href="#item_row_t"><code>$term-&gt;ROW_t</code></a> and <a href="#item_row_r"><code>$term-&gt;ROW_r</code></a> in that it puts
1208 text in rxvt-unicode's special encoding and an array of rendition values
1209 at a specific position inside the overlay.
1210 </dd>
1211 <p></p>
1212 <dt><strong><a name="item_hide">$overlay-&gt;hide</a></strong><br />
1213 </dt>
1214 <dd>
1215 If visible, hide the overlay, but do not destroy it.
1216 </dd>
1217 <p></p>
1218 <dt><strong><a name="item_show">$overlay-&gt;show</a></strong><br />
1219 </dt>
1220 <dd>
1221 If hidden, display the overlay again.
1222 </dd>
1223 <p></p></dl>
1224 <dt><strong>$popup = $term-&gt;popup ($event)</strong><br />
1225 </dt>
1226 <dd>
1227 Creates a new <code>urxvt::popup</code> object that implements a popup menu. The
1228 <code>$event</code> <em>must</em> be the event causing the menu to pop up (a button event,
1229 currently).
1230 </dd>
1231 <p></p>
1232 <dt><strong><a name="item_strwidth">$cellwidth = $term-&gt;strwidth ($string)</a></strong><br />
1233 </dt>
1234 <dd>
1235 Returns the number of screen-cells this string would need. Correctly
1236 accounts for wide and combining characters.
1237 </dd>
1238 <p></p>
1239 <dt><strong><a name="item_locale_encode">$octets = $term-&gt;locale_encode ($string)</a></strong><br />
1240 </dt>
1241 <dd>
1242 Convert the given text string into the corresponding locale encoding.
1243 </dd>
1244 <p></p>
1245 <dt><strong><a name="item_locale_decode">$string = $term-&gt;locale_decode ($octets)</a></strong><br />
1246 </dt>
1247 <dd>
1248 Convert the given locale-encoded octets into a perl string.
1249 </dd>
1250 <p></p>
1251 <dt><strong><a name="item_scr_xor_span">$term-&gt;scr_xor_span ($beg_row, $beg_col, $end_row, $end_col[, $rstyle])</a></strong><br />
1252 </dt>
1253 <dd>
1254 XORs the rendition values in the given span with the provided value
1255 (default: <code>RS_RVid</code>), which <em>MUST NOT</em> contain font styles. Useful in
1256 refresh hooks to provide effects similar to the selection.
1257 </dd>
1258 <p></p>
1259 <dt><strong><a name="item_scr_xor_rect">$term-&gt;scr_xor_rect ($beg_row, $beg_col, $end_row, $end_col[, $rstyle1[, $rstyle2]])</a></strong><br />
1260 </dt>
1261 <dd>
1262 Similar to <a href="#item_scr_xor_span"><code>scr_xor_span</code></a>, but xors a rectangle instead. Trailing
1263 whitespace will additionally be xored with the <code>$rstyle2</code>, which defaults
1264 to <code>RS_RVid | RS_Uline</code>, which removes reverse video again and underlines
1265 it instead. Both styles <em>MUST NOT</em> contain font styles.
1266 </dd>
1267 <p></p>
1268 <dt><strong><a name="item_scr_bell">$term-&gt;scr_bell</a></strong><br />
1269 </dt>
1270 <dd>
1271 Ring the bell!
1272 </dd>
1273 <p></p>
1274 <dt><strong><a name="item_scr_add_lines">$term-&gt;scr_add_lines ($string)</a></strong><br />
1275 </dt>
1276 <dd>
1277 Write the given text string to the screen, as if output by the application
1278 running inside the terminal. It may not contain command sequences (escape
1279 codes), but is free to use line feeds, carriage returns and tabs. The
1280 string is a normal text string, not in locale-dependent encoding.
1281 </dd>
1282 <dd>
1283 <p>Normally its not a good idea to use this function, as programs might be
1284 confused by changes in cursor position or scrolling. Its useful inside a
1285 <code>on_add_lines</code> hook, though.</p>
1286 </dd>
1287 <p></p>
1288 <dt><strong><a name="item_scr_change_screen">$term-&gt;scr_change_screen ($screen)</a></strong><br />
1289 </dt>
1290 <dd>
1291 Switch to given screen - 0 primary, 1 secondary.
1292 </dd>
1293 <p></p>
1294 <dt><strong><a name="item_cmd_parse">$term-&gt;cmd_parse ($octets)</a></strong><br />
1295 </dt>
1296 <dd>
1297 Similar to <a href="#item_scr_add_lines"><code>scr_add_lines</code></a>, but the argument must be in the
1298 locale-specific encoding of the terminal and can contain command sequences
1299 (escape codes) that will be interpreted.
1300 </dd>
1301 <p></p>
1302 <dt><strong><a name="item_tt_write">$term-&gt;tt_write ($octets)</a></strong><br />
1303 </dt>
1304 <dd>
1305 Write the octets given in <code>$data</code> to the tty (i.e. as program input). To
1306 pass characters instead of octets, you should convert your strings first
1307 to the locale-specific encoding using <a href="#item_locale_encode"><code>$term-&gt;locale_encode</code></a>.
1308 </dd>
1309 <p></p>
1310 <dt><strong><a name="item_pty_ev_events">$old_events = $term-&gt;pty_ev_events ([$new_events])</a></strong><br />
1311 </dt>
1312 <dd>
1313 Replaces the event mask of the pty watcher by the given event mask. Can
1314 be used to suppress input and output handling to the pty/tty. See the
1315 description of <a href="#item_events"><code>urxvt::timer-&gt;events</code></a>. Make sure to always restore
1316 the previous value.
1317 </dd>
1318 <p></p>
1319 <dt><strong><a name="item_pty_fd">$fd = $term-&gt;pty_fd</a></strong><br />
1320 </dt>
1321 <dd>
1322 Returns the master file descriptor for the pty in use, or <code>-1</code> if no pty
1323 is used.
1324 </dd>
1325 <p></p>
1326 <dt><strong><a name="item_parent">$windowid = $term-&gt;parent</a></strong><br />
1327 </dt>
1328 <dd>
1329 Return the window id of the toplevel window.
1330 </dd>
1331 <p></p>
1332 <dt><strong><a name="item_vt">$windowid = $term-&gt;vt</a></strong><br />
1333 </dt>
1334 <dd>
1335 Return the window id of the terminal window.
1336 </dd>
1337 <p></p>
1338 <dt><strong><a name="item_vt_emask_add">$term-&gt;vt_emask_add ($x_event_mask)</a></strong><br />
1339 </dt>
1340 <dd>
1341 Adds the specified events to the vt event mask. Useful e.g. when you want
1342 to receive pointer events all the times:
1343 </dd>
1344 <dd>
1345 <pre>
1346 $term-&gt;vt_emask_add (urxvt::PointerMotionMask);</pre>
1347 </dd>
1348 <p></p>
1349 <dt><strong><a name="item_focus_in">$term-&gt;focus_in</a></strong><br />
1350 </dt>
1351 <dt><strong><a name="item_focus_out">$term-&gt;focus_out</a></strong><br />
1352 </dt>
1353 <dt><strong><a name="item_key_press">$term-&gt;key_press ($state, $keycode[, $time])</a></strong><br />
1354 </dt>
1355 <dt><strong><a name="item_key_release">$term-&gt;key_release ($state, $keycode[, $time])</a></strong><br />
1356 </dt>
1357 <dd>
1358 Deliver various fake events to to terminal.
1359 </dd>
1360 <p></p>
1361 <dt><strong><a name="item_width">$window_width = $term-&gt;width</a></strong><br />
1362 </dt>
1363 <dt><strong><a name="item_height">$window_height = $term-&gt;height</a></strong><br />
1364 </dt>
1365 <dt><strong><a name="item_fwidth">$font_width = $term-&gt;fwidth</a></strong><br />
1366 </dt>
1367 <dt><strong><a name="item_fheight">$font_height = $term-&gt;fheight</a></strong><br />
1368 </dt>
1369 <dt><strong><a name="item_fbase">$font_ascent = $term-&gt;fbase</a></strong><br />
1370 </dt>
1371 <dt><strong><a name="item_nrow">$terminal_rows = $term-&gt;nrow</a></strong><br />
1372 </dt>
1373 <dt><strong><a name="item_ncol">$terminal_columns = $term-&gt;ncol</a></strong><br />
1374 </dt>
1375 <dt><strong><a name="item_focus">$has_focus = $term-&gt;focus</a></strong><br />
1376 </dt>
1377 <dt><strong><a name="item_mapped">$is_mapped = $term-&gt;mapped</a></strong><br />
1378 </dt>
1379 <dt><strong><a name="item_savelines">$max_scrollback = $term-&gt;saveLines</a></strong><br />
1380 </dt>
1381 <dt><strong><a name="item_total_rows">$nrow_plus_saveLines = $term-&gt;total_rows</a></strong><br />
1382 </dt>
1383 <dt><strong><a name="item_top_row">$topmost_scrollback_row = $term-&gt;top_row</a></strong><br />
1384 </dt>
1385 <dd>
1386 Return various integers describing terminal characteristics.
1387 </dd>
1388 <p></p>
1389 <dt><strong><a name="item_display_id">$x_display = $term-&gt;display_id</a></strong><br />
1390 </dt>
1391 <dd>
1392 Return the DISPLAY used by rxvt-unicode.
1393 </dd>
1394 <p></p>
1395 <dt><strong><a name="item_locale">$lc_ctype = $term-&gt;locale</a></strong><br />
1396 </dt>
1397 <dd>
1398 Returns the LC_CTYPE category string used by this rxvt-unicode.
1399 </dd>
1400 <p></p>
1401 <dt><strong><a name="item_env">$env = $term-&gt;env</a></strong><br />
1402 </dt>
1403 <dd>
1404 Returns a copy of the environment in effect for the terminal as a hashref
1405 similar to <code>\%ENV</code>.
1406 </dd>
1407 <p></p>
1408 <dt><strong><a name="item_envv">@envv = $term-&gt;envv</a></strong><br />
1409 </dt>
1410 <dd>
1411 Returns the environment as array of strings of the form <code>VAR=VALUE</code>.
1412 </dd>
1413 <p></p>
1414 <dt><strong><a name="item_argv">@argv = $term-&gt;argv</a></strong><br />
1415 </dt>
1416 <dd>
1417 Return the argument vector as this terminal, similar to @ARGV, but
1418 includes the program name as first element.
1419 </dd>
1420 <p></p>
1421 <dt><strong><a name="item_modlevel3mask">$modifiermask = $term-&gt;ModLevel3Mask</a></strong><br />
1422 </dt>
1423 <dt><strong><a name="item_modmetamask">$modifiermask = $term-&gt;ModMetaMask</a></strong><br />
1424 </dt>
1425 <dt><strong><a name="item_modnumlockmask">$modifiermask = $term-&gt;ModNumLockMask</a></strong><br />
1426 </dt>
1427 <dd>
1428 Return the modifier masks corresponding to the ``ISO Level 3 Shift'' (often
1429 AltGr), the meta key (often Alt) and the num lock key, if applicable.
1430 </dd>
1431 <p></p>
1432 <dt><strong><a name="item_current_screen">$screen = $term-&gt;current_screen</a></strong><br />
1433 </dt>
1434 <dd>
1435 Returns the currently displayed screen (0 primary, 1 secondary).
1436 </dd>
1437 <p></p>
1438 <dt><strong><a name="item_hidden_cursor">$cursor_is_hidden = $term-&gt;hidden_cursor</a></strong><br />
1439 </dt>
1440 <dd>
1441 Returns wether the cursor is currently hidden or not.
1442 </dd>
1443 <p></p>
1444 <dt><strong><a name="item_view_start">$view_start = $term-&gt;view_start ([$newvalue])</a></strong><br />
1445 </dt>
1446 <dd>
1447 Returns the row number of the topmost displayed line. Maximum value is
1448 <code>0</code>, which displays the normal terminal contents. Lower values scroll
1449 this many lines into the scrollback buffer.
1450 </dd>
1451 <p></p>
1452 <dt><strong><a name="item_want_refresh">$term-&gt;want_refresh</a></strong><br />
1453 </dt>
1454 <dd>
1455 Requests a screen refresh. At the next opportunity, rxvt-unicode will
1456 compare the on-screen display with its stored representation. If they
1457 differ, it redraws the differences.
1458 </dd>
1459 <dd>
1460 <p>Used after changing terminal contents to display them.</p>
1461 </dd>
1462 <p></p>
1463 <dt><strong><a name="item_row_t">$text = $term-&gt;ROW_t ($row_number[, $new_text[, $start_col]])</a></strong><br />
1464 </dt>
1465 <dd>
1466 Returns the text of the entire row with number <code>$row_number</code>. Row <code>0</code>
1467 is the topmost terminal line, row <code>$term-&gt;$ncol-1</code> is the bottommost
1468 terminal line. The scrollback buffer starts at line <code>-1</code> and extends to
1469 line <code>-$term-&gt;nsaved</code>. Nothing will be returned if a nonexistent line
1470 is requested.
1471 </dd>
1472 <dd>
1473 <p>If <code>$new_text</code> is specified, it will replace characters in the current
1474 line, starting at column <code>$start_col</code> (default <code>0</code>), which is useful
1475 to replace only parts of a line. The font index in the rendition will
1476 automatically be updated.</p>
1477 </dd>
1478 <dd>
1479 <p><a href="#item__24text"><code>$text</code></a> is in a special encoding: tabs and wide characters that use more
1480 than one cell when displayed are padded with <code>$urxvt::NOCHAR</code> (chr 65535)
1481 characters. Characters with combining characters and other characters that
1482 do not fit into the normal tetx encoding will be replaced with characters
1483 in the private use area.</p>
1484 </dd>
1485 <dd>
1486 <p>You have to obey this encoding when changing text. The advantage is
1487 that <code>substr</code> and similar functions work on screen cells and not on
1488 characters.</p>
1489 </dd>
1490 <dd>
1491 <p>The methods <a href="#item_special_encode"><code>$term-&gt;special_encode</code></a> and <a href="#item_special_decode"><code>$term-&gt;special_decode</code></a>
1492 can be used to convert normal strings into this encoding and vice versa.</p>
1493 </dd>
1494 <p></p>
1495 <dt><strong><a name="item_row_r">$rend = $term-&gt;ROW_r ($row_number[, $new_rend[, $start_col]])</a></strong><br />
1496 </dt>
1497 <dd>
1498 Like <a href="#item_row_t"><code>$term-&gt;ROW_t</code></a>, but returns an arrayref with rendition
1499 bitsets. Rendition bitsets contain information about colour, font, font
1500 styles and similar information. See also <a href="#item_row_t"><code>$term-&gt;ROW_t</code></a>.
1501 </dd>
1502 <dd>
1503 <p>When setting rendition, the font mask will be ignored.</p>
1504 </dd>
1505 <dd>
1506 <p>See the section on RENDITION, above.</p>
1507 </dd>
1508 <p></p>
1509 <dt><strong><a name="item_row_l">$length = $term-&gt;ROW_l ($row_number[, $new_length])</a></strong><br />
1510 </dt>
1511 <dd>
1512 Returns the number of screen cells that are in use (``the line
1513 length''). Unlike the urxvt core, this returns <a href="#item_ncol"><code>$term-&gt;ncol</code></a> if the
1514 line is joined with the following one.
1515 </dd>
1516 <p></p>
1517 <dt><strong><a name="item_is_longer">$bool = $term-&gt;is_longer ($row_number)</a></strong><br />
1518 </dt>
1519 <dd>
1520 Returns true if the row is part of a multiple-row logical ``line'' (i.e.
1521 joined with the following row), which means all characters are in use
1522 and it is continued on the next row (and possibly a continuation of the
1523 previous row(s)).
1524 </dd>
1525 <p></p>
1526 <dt><strong><a name="item_line">$line = $term-&gt;line ($row_number)</a></strong><br />
1527 </dt>
1528 <dd>
1529 Create and return a new <code>urxvt::line</code> object that stores information
1530 about the logical line that row <code>$row_number</code> is part of. It supports the
1531 following methods:
1532 </dd>
1533 <dl>
1534 <dt><strong><a name="item_t">$text = $line-&gt;t ([$new_text])</a></strong><br />
1535 </dt>
1536 <dd>
1537 Returns or replaces the full text of the line, similar to <a href="#item_row_t"><code>ROW_t</code></a>
1538 </dd>
1539 <p></p>
1540 <dt><strong><a name="item_r">$rend = $line-&gt;r ([$new_rend])</a></strong><br />
1541 </dt>
1542 <dd>
1543 Returns or replaces the full rendition array of the line, similar to <a href="#item_row_r"><code>ROW_r</code></a>
1544 </dd>
1545 <p></p>
1546 <dt><strong><a name="item_l">$length = $line-&gt;l</a></strong><br />
1547 </dt>
1548 <dd>
1549 Returns the length of the line in cells, similar to <a href="#item_row_l"><code>ROW_l</code></a>.
1550 </dd>
1551 <p></p>
1552 <dt><strong><a name="item_beg">$rownum = $line-&gt;beg</a></strong><br />
1553 </dt>
1554 <dt><strong><a name="item_end">$rownum = $line-&gt;end</a></strong><br />
1555 </dt>
1556 <dd>
1557 Return the row number of the first/last row of the line, respectively.
1558 </dd>
1559 <p></p>
1560 <dt><strong><a name="item_offset_of">$offset = $line-&gt;offset_of ($row, $col)</a></strong><br />
1561 </dt>
1562 <dd>
1563 Returns the character offset of the given row|col pair within the logical
1564 line. Works for rows outside the line, too, and returns corresponding
1565 offsets outside the string.
1566 </dd>
1567 <p></p>
1568 <dt><strong><a name="item_coord_of">($row, $col) = $line-&gt;coord_of ($offset)</a></strong><br />
1569 </dt>
1570 <dd>
1571 Translates a string offset into terminal coordinates again.
1572 </dd>
1573 <p></p></dl>
1574 <dt><strong><a name="item_special_encode">$text = $term-&gt;special_encode $string</a></strong><br />
1575 </dt>
1576 <dd>
1577 Converts a perl string into the special encoding used by rxvt-unicode,
1578 where one character corresponds to one screen cell. See
1579 <a href="#item_row_t"><code>$term-&gt;ROW_t</code></a> for details.
1580 </dd>
1581 <p></p>
1582 <dt><strong><a name="item_special_decode">$string = $term-&gt;special_decode $text</a></strong><br />
1583 </dt>
1584 <dd>
1585 Converts rxvt-unicodes text reprsentation into a perl string. See
1586 <a href="#item_row_t"><code>$term-&gt;ROW_t</code></a> for details.
1587 </dd>
1588 <p></p>
1589 <dt><strong><a name="item_grab_button">$success = $term-&gt;grab_button ($button, $modifiermask[, $window = $term-&gt;vt])</a></strong><br />
1590 </dt>
1591 <dt><strong><a name="item_ungrab_button">$term-&gt;ungrab_button ($button, $modifiermask[, $window = $term-&gt;vt])</a></strong><br />
1592 </dt>
1593 <dd>
1594 Register/unregister a synchronous button grab. See the XGrabButton
1595 manpage.
1596 </dd>
1597 <p></p>
1598 <dt><strong><a name="item_grab">$success = $term-&gt;grab ($eventtime[, $sync])</a></strong><br />
1599 </dt>
1600 <dd>
1601 Calls XGrabPointer and XGrabKeyboard in asynchronous (default) or
1602 synchronous (<code>$sync</code> is true). Also remembers the grab timestampe.
1603 </dd>
1604 <p></p>
1605 <dt><strong><a name="item_allow_events_async">$term-&gt;allow_events_async</a></strong><br />
1606 </dt>
1607 <dd>
1608 Calls XAllowEvents with AsyncBoth for the most recent grab.
1609 </dd>
1610 <p></p>
1611 <dt><strong><a name="item_allow_events_sync">$term-&gt;allow_events_sync</a></strong><br />
1612 </dt>
1613 <dd>
1614 Calls XAllowEvents with SyncBoth for the most recent grab.
1615 </dd>
1616 <p></p>
1617 <dt><strong><a name="item_allow_events_replay">$term-&gt;allow_events_replay</a></strong><br />
1618 </dt>
1619 <dd>
1620 Calls XAllowEvents with both ReplayPointer and ReplayKeyboard for the most
1621 recent grab.
1622 </dd>
1623 <p></p>
1624 <dt><strong><a name="item_ungrab">$term-&gt;ungrab</a></strong><br />
1625 </dt>
1626 <dd>
1627 Calls XUngrab for the most recent grab. Is called automatically on
1628 evaluation errors, as it is better to lose the grab in the error case as
1629 the session.
1630 </dd>
1631 <p></p>
1632 <dt><strong><a name="item_xinternatom">$atom = $term-&gt;XInternAtom ($atom_name[, $only_if_exists])</a></strong><br />
1633 </dt>
1634 <dt><strong><a name="item_xgetatomname">$atom_name = $term-&gt;XGetAtomName ($atom)</a></strong><br />
1635 </dt>
1636 <dt><strong><a name="item_xlistproperties">@atoms = $term-&gt;XListProperties ($window)</a></strong><br />
1637 </dt>
1638 <dt><strong><a name="item_xgetwindowproperty">($type,$format,$octets) = $term-&gt;XGetWindowProperty ($window, $property)</a></strong><br />
1639 </dt>
1640 <dt><strong><a name="item_xchangewindowproperty">$term-&gt;XChangeWindowProperty ($window, $property, $type, $format, $octets)</a></strong><br />
1641 </dt>
1642 <dt><strong><a name="item_xdeleteproperty">$term-&gt;XDeleteProperty ($window, $property)</a></strong><br />
1643 </dt>
1644 <dt><strong><a name="item_defaultrootwindow">$window = $term-&gt;DefaultRootWindow</a></strong><br />
1645 </dt>
1646 <dt><strong><a name="item_xreparentwindow">$term-&gt;XReparentWindow ($window, $parent, [$x, $y])</a></strong><br />
1647 </dt>
1648 <dt><strong><a name="item_xmapwindow">$term-&gt;XMapWindow ($window)</a></strong><br />
1649 </dt>
1650 <dt><strong><a name="item_xunmapwindow">$term-&gt;XUnmapWindow ($window)</a></strong><br />
1651 </dt>
1652 <dt><strong><a name="item_xmoveresizewindow">$term-&gt;XMoveResizeWindow ($window, $x, $y, $width, $height)</a></strong><br />
1653 </dt>
1654 <dt><strong><a name="item_xtranslatecoordinates">($x, $y, $child_window) = $term-&gt;XTranslateCoordinates ($src, $dst, $x, $y)</a></strong><br />
1655 </dt>
1656 <dt><strong><a name="item_xchangeinput">$term-&gt;XChangeInput ($window, $add_events[, $del_events])</a></strong><br />
1657 </dt>
1658 <dd>
1659 Various X or X-related functions. The <code>$term</code> object only serves as
1660 the source of the display, otherwise those functions map more-or-less
1661 directory onto the X functions of the same name.
1662 </dd>
1663 <p></p></dl>
1664 <p>
1665 </p>
1666 <h2><a name="the_urxvt__popup_class">The <code>urxvt::popup</code> Class</a></h2>
1667 <dl>
1668 <dt><strong><a name="item_add_title">$popup-&gt;add_title ($title)</a></strong><br />
1669 </dt>
1670 <dd>
1671 Adds a non-clickable title to the popup.
1672 </dd>
1673 <p></p>
1674 <dt><strong><a name="item_add_separator">$popup-&gt;add_separator ([$sepchr])</a></strong><br />
1675 </dt>
1676 <dd>
1677 Creates a separator, optionally using the character given as <code>$sepchr</code>.
1678 </dd>
1679 <p></p>
1680 <dt><strong><a name="item_add_button">$popup-&gt;add_button ($text, $cb)</a></strong><br />
1681 </dt>
1682 <dd>
1683 Adds a clickable button to the popup. <code>$cb</code> is called whenever it is
1684 selected.
1685 </dd>
1686 <p></p>
1687 <dt><strong><a name="item_add_toggle">$popup-&gt;add_toggle ($text, $initial_value, $cb)</a></strong><br />
1688 </dt>
1689 <dd>
1690 Adds a toggle/checkbox item to the popup. The callback gets called
1691 whenever it gets toggled, with a boolean indicating its new value as its
1692 first argument.
1693 </dd>
1694 <p></p>
1695 <dt><strong>$popup-&gt;show</strong><br />
1696 </dt>
1697 <dd>
1698 Displays the popup (which is initially hidden).
1699 </dd>
1700 <p></p></dl>
1701 <p>
1702 </p>
1703 <h2><a name="the_urxvt__timer_class">The <code>urxvt::timer</code> Class</a></h2>
1704 <p>This class implements timer watchers/events. Time is represented as a
1705 fractional number of seconds since the epoch. Example:</p>
1706 <pre>
1707 $term-&gt;{overlay} = $term-&gt;overlay (-1, 0, 8, 1, urxvt::OVERLAY_RSTYLE, 0);
1708 $term-&gt;{timer} = urxvt::timer
1709 -&gt;new
1710 -&gt;interval (1)
1711 -&gt;cb (sub {
1712 $term-&gt;{overlay}-&gt;set (0, 0,
1713 sprintf &quot;%2d:%02d:%02d&quot;, (localtime urxvt::NOW)[2,1,0]);
1714 });</pre>
1715 <dl>
1716 <dt><strong><a name="item__24timer__3d_new_urxvt_3a_3atimer">$timer = new urxvt::timer</a></strong><br />
1717 </dt>
1718 <dd>
1719 Create a new timer object in started state. It is scheduled to fire
1720 immediately.
1721 </dd>
1722 <p></p>
1723 <dt><strong><a name="item_cb">$timer = $timer-&gt;cb (sub { my ($timer) = @_; ... })</a></strong><br />
1724 </dt>
1725 <dd>
1726 Set the callback to be called when the timer triggers.
1727 </dd>
1728 <p></p>
1729 <dt><strong><a name="item_at">$tstamp = $timer-&gt;at</a></strong><br />
1730 </dt>
1731 <dd>
1732 Return the time this watcher will fire next.
1733 </dd>
1734 <p></p>
1735 <dt><strong>$timer = $timer-&gt;set ($tstamp)</strong><br />
1736 </dt>
1737 <dd>
1738 Set the time the event is generated to $tstamp.
1739 </dd>
1740 <p></p>
1741 <dt><strong><a name="item_interval">$timer = $timer-&gt;interval ($interval)</a></strong><br />
1742 </dt>
1743 <dd>
1744 Normally (and when <code>$interval</code> is <code>0</code>), the timer will automatically
1745 stop after it has fired once. If <code>$interval</code> is non-zero, then the timer
1746 is automatically rescheduled at the given intervals.
1747 </dd>
1748 <p></p>
1749 <dt><strong><a name="item_start">$timer = $timer-&gt;start</a></strong><br />
1750 </dt>
1751 <dd>
1752 Start the timer.
1753 </dd>
1754 <p></p>
1755 <dt><strong>$timer = $timer-&gt;start ($tstamp)</strong><br />
1756 </dt>
1757 <dd>
1758 Set the event trigger time to <code>$tstamp</code> and start the timer.
1759 </dd>
1760 <p></p>
1761 <dt><strong><a name="item_after">$timer = $timer-&gt;after ($delay)</a></strong><br />
1762 </dt>
1763 <dd>
1764 Like <a href="#item_start"><code>start</code></a>, but sets the expiry timer to c&lt;urxvt::NOW + $delay&gt;.
1765 </dd>
1766 <p></p>
1767 <dt><strong><a name="item_stop">$timer = $timer-&gt;stop</a></strong><br />
1768 </dt>
1769 <dd>
1770 Stop the timer.
1771 </dd>
1772 <p></p></dl>
1773 <p>
1774 </p>
1775 <h2><a name="the_urxvt__iow_class">The <code>urxvt::iow</code> Class</a></h2>
1776 <p>This class implements io watchers/events. Example:</p>
1777 <pre>
1778 $term-&gt;{socket} = ...
1779 $term-&gt;{iow} = urxvt::iow
1780 -&gt;new
1781 -&gt;fd (fileno $term-&gt;{socket})
1782 -&gt;events (urxvt::EVENT_READ)
1783 -&gt;start
1784 -&gt;cb (sub {
1785 my ($iow, $revents) = @_;
1786 # $revents must be 1 here, no need to check
1787 sysread $term-&gt;{socket}, my $buf, 8192
1788 or end-of-file;
1789 });</pre>
1790 <dl>
1791 <dt><strong><a name="item__24iow__3d_new_urxvt_3a_3aiow">$iow = new urxvt::iow</a></strong><br />
1792 </dt>
1793 <dd>
1794 Create a new io watcher object in stopped state.
1795 </dd>
1796 <p></p>
1797 <dt><strong>$iow = $iow-&gt;cb (sub { my ($iow, $reventmask) = @_; ... })</strong><br />
1798 </dt>
1799 <dd>
1800 Set the callback to be called when io events are triggered. <code>$reventmask</code>
1801 is a bitset as described in the <a href="#item_events"><code>events</code></a> method.
1802 </dd>
1803 <p></p>
1804 <dt><strong><a name="item_fd">$iow = $iow-&gt;fd ($fd)</a></strong><br />
1805 </dt>
1806 <dd>
1807 Set the filedescriptor (not handle) to watch.
1808 </dd>
1809 <p></p>
1810 <dt><strong><a name="item_events">$iow = $iow-&gt;events ($eventmask)</a></strong><br />
1811 </dt>
1812 <dd>
1813 Set the event mask to watch. The only allowed values are
1814 <code>urxvt::EVENT_READ</code> and <code>urxvt::EVENT_WRITE</code>, which might be ORed
1815 together, or <code>urxvt::EVENT_NONE</code>.
1816 </dd>
1817 <p></p>
1818 <dt><strong>$iow = $iow-&gt;start</strong><br />
1819 </dt>
1820 <dd>
1821 Start watching for requested events on the given handle.
1822 </dd>
1823 <p></p>
1824 <dt><strong>$iow = $iow-&gt;stop</strong><br />
1825 </dt>
1826 <dd>
1827 Stop watching for events on the given filehandle.
1828 </dd>
1829 <p></p></dl>
1830 <p>
1831 </p>
1832 <h2><a name="the_urxvt__iw_class">The <code>urxvt::iw</code> Class</a></h2>
1833 <p>This class implements idle watchers, that get called automatically when
1834 the process is idle. They should return as fast as possible, after doing
1835 some useful work.</p>
1836 <dl>
1837 <dt><strong><a name="item__24iw__3d_new_urxvt_3a_3aiw">$iw = new urxvt::iw</a></strong><br />
1838 </dt>
1839 <dd>
1840 Create a new idle watcher object in stopped state.
1841 </dd>
1842 <p></p>
1843 <dt><strong>$iw = $iw-&gt;cb (sub { my ($iw) = @_; ... })</strong><br />
1844 </dt>
1845 <dd>
1846 Set the callback to be called when the watcher triggers.
1847 </dd>
1848 <p></p>
1849 <dt><strong>$timer = $timer-&gt;start</strong><br />
1850 </dt>
1851 <dd>
1852 Start the watcher.
1853 </dd>
1854 <p></p>
1855 <dt><strong>$timer = $timer-&gt;stop</strong><br />
1856 </dt>
1857 <dd>
1858 Stop the watcher.
1859 </dd>
1860 <p></p></dl>
1861 <p>
1862 </p>
1863 <h2><a name="the_urxvt__pw_class">The <code>urxvt::pw</code> Class</a></h2>
1864 <p>This class implements process watchers. They create an event whenever a
1865 process exits, after which they stop automatically.</p>
1866 <pre>
1867 my $pid = fork;
1868 ...
1869 $term-&gt;{pw} = urxvt::pw
1870 -&gt;new
1871 -&gt;start ($pid)
1872 -&gt;cb (sub {
1873 my ($pw, $exit_status) = @_;
1874 ...
1875 });</pre>
1876 <dl>
1877 <dt><strong><a name="item__24pw__3d_new_urxvt_3a_3apw">$pw = new urxvt::pw</a></strong><br />
1878 </dt>
1879 <dd>
1880 Create a new process watcher in stopped state.
1881 </dd>
1882 <p></p>
1883 <dt><strong>$pw = $pw-&gt;cb (sub { my ($pw, $exit_status) = @_; ... })</strong><br />
1884 </dt>
1885 <dd>
1886 Set the callback to be called when the timer triggers.
1887 </dd>
1888 <p></p>
1889 <dt><strong>$pw = $timer-&gt;start ($pid)</strong><br />
1890 </dt>
1891 <dd>
1892 Tells the wqtcher to start watching for process <code>$pid</code>.
1893 </dd>
1894 <p></p>
1895 <dt><strong>$pw = $pw-&gt;stop</strong><br />
1896 </dt>
1897 <dd>
1898 Stop the watcher.
1899 </dd>
1900 <p></p></dl>
1901 <p>
1902 </p>
1903 <hr />
1904 <h1><a name="environment">ENVIRONMENT</a></h1>
1905 <p>
1906 </p>
1907 <h2><a name="urxvt_perl_verbosity">URXVT_PERL_VERBOSITY</a></h2>
1908 <p>This variable controls the verbosity level of the perl extension. Higher
1909 numbers indicate more verbose output.</p>
1910 <dl>
1911 <dt><strong><a name="item__3d_3d_0__2d_fatal_messages">== 0 - fatal messages</a></strong><br />
1912 </dt>
1913 <dt><strong><a name="item__3e_3d_3__2d_script_loading_and_management">&gt;= 3 - script loading and management</a></strong><br />
1914 </dt>
1915 <dt><strong><a name="item__3e_3d10__2d_all_called_hooks">&gt;=10 - all called hooks</a></strong><br />
1916 </dt>
1917 <dt><strong><a name="item__3e_3d11__2d_hook_reutrn_values">&gt;=11 - hook reutrn values</a></strong><br />
1918 </dt>
1919 </dl>
1920 <p>
1921 </p>
1922 <hr />
1923 <h1><a name="author">AUTHOR</a></h1>
1924 <pre>
1925 Marc Lehmann &lt;pcg@goof.com&gt;
1926 <a href="http://software.schmorp.de/pkg/rxvt-unicode">http://software.schmorp.de/pkg/rxvt-unicode</a></pre>
1927
1928 </body>
1929
1930 </html>