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4 <head>
5 <title>rxvtperl - rxvt-unicode's embedded perl interpreter</title>
6 <meta http-equiv="content-type" content="text/html; charset=utf-8" />
7 <link rev="made" href="mailto:perl-binary@plan9.de" />
8 </head>
9
10 <body style="background-color: white">
11
12 <p><a name="__index__"></a></p>
13 <!-- INDEX BEGIN -->
14
15 <ul>
16
17 <li><a href="#name">NAME</a></li>
18 <li><a href="#synopsis">SYNOPSIS</a></li>
19 <li><a href="#description">DESCRIPTION</a></li>
20 <li><a href="#prepackaged_extensions">PREPACKAGED EXTENSIONS</a></li>
21 <li><a href="#api_documentation">API DOCUMENTATION</a></li>
22 <ul>
23
24 <li><a href="#general_api_considerations">General API Considerations</a></li>
25 <li><a href="#extension_objects">Extension Objects</a></li>
26 <li><a href="#hooks">Hooks</a></li>
27 <li><a href="#variables_in_the_urxvt_package">Variables in the <code>urxvt</code> Package</a></li>
28 <li><a href="#functions_in_the_urxvt_package">Functions in the <code>urxvt</code> Package</a></li>
29 <li><a href="#rendition">RENDITION</a></li>
30 <li><a href="#the_urxvt__anyevent_class">The <code>urxvt::anyevent</code> Class</a></li>
31 <li><a href="#the_urxvt__term_class">The <code>urxvt::term</code> Class</a></li>
32 <li><a href="#the_urxvt__popup_class">The <code>urxvt::popup</code> Class</a></li>
33 <li><a href="#the_urxvt__timer_class">The <code>urxvt::timer</code> Class</a></li>
34 <li><a href="#the_urxvt__iow_class">The <code>urxvt::iow</code> Class</a></li>
35 <li><a href="#the_urxvt__iw_class">The <code>urxvt::iw</code> Class</a></li>
36 <li><a href="#the_urxvt__pw_class">The <code>urxvt::pw</code> Class</a></li>
37 </ul>
38
39 <li><a href="#environment">ENVIRONMENT</a></li>
40 <ul>
41
42 <li><a href="#urxvt_perl_verbosity">URXVT_PERL_VERBOSITY</a></li>
43 </ul>
44
45 <li><a href="#author">AUTHOR</a></li>
46 </ul>
47 <!-- INDEX END -->
48
49 <hr />
50 <p>
51 </p>
52 <hr />
53 <h1><a name="name">NAME</a></h1>
54 <p>rxvtperl - rxvt-unicode's embedded perl interpreter</p>
55 <p>
56 </p>
57 <hr />
58 <h1><a name="synopsis">SYNOPSIS</a></h1>
59 <pre>
60 # create a file grab_test in $HOME:</pre>
61 <pre>
62 sub on_sel_grab {
63 warn &quot;you selected &quot;, $_[0]-&gt;selection;
64 ()
65 }</pre>
66 <pre>
67 # start a rxvt using it:</pre>
68 <pre>
69 rxvt --perl-lib $HOME -pe grab_test</pre>
70 <p>
71 </p>
72 <hr />
73 <h1><a name="description">DESCRIPTION</a></h1>
74 <p>Every time a terminal object gets created, extension scripts specified via
75 the <code>perl</code> resource are loaded and associated with it.</p>
76 <p>Scripts are compiled in a 'use strict' and 'use utf8' environment, and
77 thus must be encoded as UTF-8.</p>
78 <p>Each script will only ever be loaded once, even in rxvtd, where
79 scripts will be shared (but not enabled) for all terminals.</p>
80 <p>
81 </p>
82 <hr />
83 <h1><a name="prepackaged_extensions">PREPACKAGED EXTENSIONS</a></h1>
84 <p>This section describes the extensions delivered with this release. You can
85 find them in <em>/opt/rxvt/lib/urxvt/perl/</em>.</p>
86 <p>You can activate them like this:</p>
87 <pre>
88 rxvt -pe &lt;extensionname&gt;</pre>
89 <p>Or by adding them to the resource for extensions loaded by default:</p>
90 <pre>
91 URxvt.perl-ext-common: default,automove-background,selection-autotransform</pre>
92 <dl>
93 <dt><strong><a name="item_selection">selection (enabled by default)</a></strong>
94
95 <dd>
96 <p>(More) intelligent selection. This extension tries to be more intelligent
97 when the user extends selections (double-click and further clicks). Right
98 now, it tries to select words, urls and complete shell-quoted
99 arguments, which is very convenient, too, if your <em>ls</em> supports
100 <code>--quoting-style=shell</code>.</p>
101 </dd>
102 <dd>
103 <p>A double-click usually selects the word under the cursor, further clicks
104 will enlarge the selection.</p>
105 </dd>
106 <dd>
107 <p>The selection works by trying to match a number of regexes and displaying
108 them in increasing order of length. You can add your own regexes by
109 specifying resources of the form:</p>
110 </dd>
111 <dd>
112 <pre>
113 URxvt.selection.pattern-0: perl-regex
114 URxvt.selection.pattern-1: perl-regex
115 ...</pre>
116 </dd>
117 <dd>
118 <p>The index number (0, 1...) must not have any holes, and each regex must
119 contain at least one pair of capturing parentheses, which will be used for
120 the match. For example, the following adds a regex that matches everything
121 between two vertical bars:</p>
122 </dd>
123 <dd>
124 <pre>
125 URxvt.selection.pattern-0: \\|([^|]+)\\|</pre>
126 </dd>
127 <dd>
128 <p>Another example: Programs I use often output ``absolute path: '' at the
129 beginning of a line when they process multiple files. The following
130 pattern matches the filename (note, there is a single space at the very
131 end):</p>
132 </dd>
133 <dd>
134 <pre>
135 URxvt.selection.pattern-0: ^(/[^:]+):\</pre>
136 </dd>
137 <dd>
138 <p>You can look at the source of the selection extension to see more
139 interesting uses, such as parsing a line from beginning to end.</p>
140 </dd>
141 <dd>
142 <p>This extension also offers following bindable keyboard commands:</p>
143 </dd>
144 <dl>
145 <dt><strong><a name="item_rot13">rot13</a></strong>
146
147 <dd>
148 <p>Rot-13 the selection when activated. Used via keyboard trigger:</p>
149 </dd>
150 <dd>
151 <pre>
152 URxvt.keysym.C-M-r: perl:selection:rot13</pre>
153 </dd>
154 </li>
155 </dl>
156 <dt><strong><a name="item_popup">option-popup (enabled by default)</a></strong>
157
158 <dd>
159 <p>Binds a popup menu to Ctrl-Button2 that lets you toggle (some) options at
160 runtime.</p>
161 </dd>
162 <dd>
163 <p>Other extensions can extend this popup menu by pushing a code reference
164 onto <code>@{ $term-</code>{option_popup_hook} }&gt;, which gets called whenever the
165 popup is being displayed.</p>
166 </dd>
167 <dd>
168 <p>It's sole argument is the popup menu, which can be modified. It should
169 either return nothing or a string, the initial boolean value and a code
170 reference. The string will be used as button text and the code reference
171 will be called when the toggle changes, with the new boolean value as
172 first argument.</p>
173 </dd>
174 <dd>
175 <p>The following will add an entry <code>myoption</code> that changes
176 <code>$self-</code>{myoption}&gt;:</p>
177 </dd>
178 <dd>
179 <pre>
180 push @{ $self-&gt;{term}{option_popup_hook} }, sub {
181 (&quot;my option&quot; =&gt; $myoption, sub { $self-&gt;{myoption} = $_[0] })
182 };</pre>
183 </dd>
184 </li>
185 <dt><strong>selection-popup (enabled by default)</strong>
186
187 <dd>
188 <p>Binds a popup menu to Ctrl-Button3 that lets you convert the selection
189 text into various other formats/action (such as uri unescaping, perl
190 evaluation, web-browser starting etc.), depending on content.</p>
191 </dd>
192 <dd>
193 <p>Other extensions can extend this popup menu by pushing a code reference
194 onto <code>@{ $term-</code>{selection_popup_hook} }&gt;, which gets called whenever the
195 popup is being displayed.</p>
196 </dd>
197 <dd>
198 <p>It's sole argument is the popup menu, which can be modified. The selection
199 is in <code>$_</code>, which can be used to decide whether to add something or not.
200 It should either return nothing or a string and a code reference. The
201 string will be used as button text and the code reference will be called
202 when the button gets activated and should transform <code>$_</code>.</p>
203 </dd>
204 <dd>
205 <p>The following will add an entry <code>a to b</code> that transforms all <code>a</code>s in
206 the selection to <code>b</code>s, but only if the selection currently contains any
207 <code>a</code>s:</p>
208 </dd>
209 <dd>
210 <pre>
211 push @{ $self-&gt;{term}{selection_popup_hook} }, sub {
212 /a/ ? (&quot;a to be&quot; =&gt; sub { s/a/b/g }
213 : ()
214 };</pre>
215 </dd>
216 </li>
217 <dt><strong><a name="item_searchable_2dscrollback_3chotkey_3e__28enabled_by_">searchable-scrollback&lt;hotkey&gt; (enabled by default)</a></strong>
218
219 <dd>
220 <p>Adds regex search functionality to the scrollback buffer, triggered
221 by a hotkey (default: <code>M-s</code>). While in search mode, normal terminal
222 input/output is suspended and a regex is displayed at the bottom of the
223 screen.</p>
224 </dd>
225 <dd>
226 <p>Inputting characters appends them to the regex and continues incremental
227 search. <code>BackSpace</code> removes a character from the regex, <code>Up</code> and <code>Down</code>
228 search upwards/downwards in the scrollback buffer, <code>End</code> jumps to the
229 bottom. <code>Escape</code> leaves search mode and returns to the point where search
230 was started, while <code>Enter</code> or <code>Return</code> stay at the current position and
231 additionally stores the first match in the current line into the primary
232 selection.</p>
233 </dd>
234 <dd>
235 <p>The regex defaults to ``(?i)'', resulting in a case-insensitive search. To
236 get a case-sensitive search you can delete this prefix using <code>BackSpace</code>
237 or simply use an uppercase character which removes the ``(?i)'' prefix.</p>
238 </dd>
239 <dd>
240 <p>See <em>perlre</em> for more info about perl regular expression syntax.</p>
241 </dd>
242 </li>
243 <dt><strong><a name="item_readline">readline (enabled by default)</a></strong>
244
245 <dd>
246 <p>A support package that tries to make editing with readline easier. At
247 the moment, it reacts to clicking shift-left mouse button by trying to
248 move the text cursor to this position. It does so by generating as many
249 cursor-left or cursor-right keypresses as required (the this only works
250 for programs that correctly support wide characters).</p>
251 </dd>
252 <dd>
253 <p>To avoid too many false positives, this is only done when:</p>
254 </dd>
255 <dl>
256 <dt><strong><a name="item__2d_the_tty_is_in_icanon_state_2e">- the tty is in ICANON state.</a></strong>
257
258 <dt><strong><a name="item__2d_the_text_cursor_is_visible_2e">- the text cursor is visible.</a></strong>
259
260 <dt><strong><a name="item__2d_the_primary_screen_is_currently_being_displaye">- the primary screen is currently being displayed.</a></strong>
261
262 <dt><strong><a name="item_same">- the mouse is on the same (multi-row-) line as the text cursor.</a></strong>
263
264 </dl>
265 <p>The normal selection mechanism isn't disabled, so quick successive clicks
266 might interfere with selection creation in harmless ways.</p>
267 <dt><strong><a name="item_selection_2dautotransform">selection-autotransform</a></strong>
268
269 <dd>
270 <p>This selection allows you to do automatic transforms on a selection
271 whenever a selection is made.</p>
272 </dd>
273 <dd>
274 <p>It works by specifying perl snippets (most useful is a single <code>s///</code>
275 operator) that modify <code>$_</code> as resources:</p>
276 </dd>
277 <dd>
278 <pre>
279 URxvt.selection-autotransform.0: transform
280 URxvt.selection-autotransform.1: transform
281 ...</pre>
282 </dd>
283 <dd>
284 <p>For example, the following will transform selections of the form
285 <code>filename:number</code>, often seen in compiler messages, into <code>vi +$filename
286 $word</code>:</p>
287 </dd>
288 <dd>
289 <pre>
290 URxvt.selection-autotransform.0: s/^([^:[:space:]]+):(\\d+):?$/vi +$2 \\Q$1\\E\\x0d/</pre>
291 </dd>
292 <dd>
293 <p>And this example matches the same,but replaces it with vi-commands you can
294 paste directly into your (vi :) editor:</p>
295 </dd>
296 <dd>
297 <pre>
298 URxvt.selection-autotransform.0: s/^([^:[:space:]]+(\\d+):?$/:e \\Q$1\\E\\x0d:$2\\x0d/</pre>
299 </dd>
300 <dd>
301 <p>Of course, this can be modified to suit your needs and your editor :)</p>
302 </dd>
303 <dd>
304 <p>To expand the example above to typical perl error messages (``XXX at
305 FILENAME line YYY.''), you need a slightly more elaborate solution:</p>
306 </dd>
307 <dd>
308 <pre>
309 URxvt.selection.pattern-0: ( at .*? line \\d+[,.])
310 URxvt.selection-autotransform.0: s/^ at (.*?) line (\\d+)[,.]$/:e \\Q$1\E\\x0d:$2\\x0d/</pre>
311 </dd>
312 <dd>
313 <p>The first line tells the selection code to treat the unchanging part of
314 every error message as a selection pattern, and the second line transforms
315 the message into vi commands to load the file.</p>
316 </dd>
317 </li>
318 <dt><strong><a name="item_tabbed">tabbed</a></strong>
319
320 <dd>
321 <p>This transforms the terminal into a tabbar with additional terminals, that
322 is, it implements what is commonly referred to as ``tabbed terminal''. The topmost line
323 displays a ``[NEW]'' button, which, when clicked, will add a new tab, followed by one
324 button per tab.</p>
325 </dd>
326 <dd>
327 <p>Clicking a button will activate that tab. Pressing <strong>Shift-Left</strong> and
328 <strong>Shift-Right</strong> will switch to the tab left or right of the current one,
329 while <strong>Shift-Down</strong> creates a new tab.</p>
330 </dd>
331 <dd>
332 <p>The tabbar itself can be configured similarly to a normal terminal, but
333 with a resource class of <code>URxvt.tabbed</code>. In addition, it supports the
334 following four resources (shown with defaults):</p>
335 </dd>
336 <dd>
337 <pre>
338 URxvt.tabbed.tabbar-fg: &lt;colour-index, default 3&gt;
339 URxvt.tabbed.tabbar-bg: &lt;colour-index, default 0&gt;
340 URxvt.tabbed.tab-fg: &lt;colour-index, default 0&gt;
341 URxvt.tabbed.tab-bg: &lt;colour-index, default 1&gt;</pre>
342 </dd>
343 <dd>
344 <p>See <em>COLOR AND GRAPHICS</em> in the <code>rxvt(1)</code> manpage for valid
345 indices.</p>
346 </dd>
347 </li>
348 <dt><strong><a name="item_matcher">matcher</a></strong>
349
350 <dd>
351 <p>Uses per-line display filtering (<code>on_line_update</code>) to underline text
352 matching a certain pattern and make it clickable. When clicked with the
353 mouse button specified in the <code>matcher.button</code> resource (default 2, or
354 middle), the program specified in the <code>matcher.launcher</code> resource
355 (default, the <code>urlLauncher</code> resource, <code>sensible-browser</code>) will be started
356 with the matched text as first argument. The default configuration is
357 suitable for matching URLs and launching a web browser, like the
358 former ``mark-urls'' extension.</p>
359 </dd>
360 <dd>
361 <p>The default pattern to match URLs can be overridden with the
362 <code>matcher.pattern.0</code> resource, and additional patterns can be specified
363 with numbered patterns, in a manner similar to the ``selection'' extension.
364 The launcher can also be overridden on a per-pattern basis.</p>
365 </dd>
366 <dd>
367 <p>Example configuration:</p>
368 </dd>
369 <dd>
370 <pre>
371 URxvt.perl-ext: default,matcher
372 URxvt.urlLauncher: sensible-browser
373 URxvt.matcher.button: 1
374 URxvt.matcher.pattern.1: \\bwww\\.[\\w-]+\\.[\\w./?&amp;@#-]*[\\w/-]
375 URxvt.matcher.pattern.2: \\B(/\\S+?):(\\d+)(?=:|$)
376 URxvt.matcher.launcher.2: gvim +$2 $1</pre>
377 </dd>
378 </li>
379 <dt><strong><a name="item_xim_2donthespot">xim-onthespot</a></strong>
380
381 <dd>
382 <p>This (experimental) perl extension implements OnTheSpot editing. It does
383 not work perfectly, and some input methods don't seem to work well with
384 OnTheSpot editing in general, but it seems to work at leats for SCIM and
385 kinput2.</p>
386 </dd>
387 <dd>
388 <p>You enable it by specifying this extension and a preedit style of
389 <code>OnTheSpot</code>, i.e.:</p>
390 </dd>
391 <dd>
392 <pre>
393 rxvt -pt OnTheSpot -pe xim-onthespot</pre>
394 </dd>
395 </li>
396 <dt><strong><a name="item_kuake_3chotkey_3e">kuake&lt;hotkey&gt;</a></strong>
397
398 <dd>
399 <p>A very primitive quake-console-like extension. It was inspired by a
400 description of how the programs <code>kuake</code> and <code>yakuake</code> work: Whenever the
401 user presses a global accelerator key (by default <code>F10</code>), the terminal
402 will show or hide itself. Another press of the accelerator key will hide
403 or show it again.</p>
404 </dd>
405 <dd>
406 <p>Initially, the window will not be shown when using this extension.</p>
407 </dd>
408 <dd>
409 <p>This is useful if you need a single terminal thats not using any desktop
410 space most of the time but is quickly available at the press of a key.</p>
411 </dd>
412 <dd>
413 <p>The accelerator key is grabbed regardless of any modifiers, so this
414 extension will actually grab a physical key just for this function.</p>
415 </dd>
416 <dd>
417 <p>If you want a quake-like animation, tell your window manager to do so
418 (fvwm can do it).</p>
419 </dd>
420 </li>
421 <dt><strong><a name="item_automove_2dbackground">automove-background</a></strong>
422
423 <dd>
424 <p>This is basically a very small extension that dynamically changes the
425 background pixmap offset to the window position, in effect creating the
426 same effect as pseudo transparency with a custom pixmap. No scaling is
427 supported in this mode. Example:</p>
428 </dd>
429 <dd>
430 <pre>
431 rxvt -pixmap background.xpm -pe automove-background</pre>
432 </dd>
433 </li>
434 <dt><strong><a name="item_block_2dgraphics_2dto_2dascii">block-graphics-to-ascii</a></strong>
435
436 <dd>
437 <p>A not very useful example of filtering all text output to the terminal
438 by replacing all line-drawing characters (U+2500 .. U+259F) by a
439 similar-looking ascii character.</p>
440 </dd>
441 </li>
442 <dt><strong><a name="item_digital_2dclock">digital-clock</a></strong>
443
444 <dd>
445 <p>Displays a digital clock using the built-in overlay.</p>
446 </dd>
447 </li>
448 <dt><strong><a name="item_remote_2dclipboard">remote-clipboard</a></strong>
449
450 <dd>
451 <p>Somewhat of a misnomer, this extension adds two menu entries to the
452 selection popup that allows one ti run external commands to store the
453 selection somewhere and fetch it again.</p>
454 </dd>
455 <dd>
456 <p>We use it to implement a ``distributed selection mechanism'', which just
457 means that one command uploads the file to a remote server, and another
458 reads it.</p>
459 </dd>
460 <dd>
461 <p>The commands can be set using the <code>URxvt.remote-selection.store</code> and
462 <code>URxvt.remote-selection.fetch</code> resources. The first should read the
463 selection to store from STDIN (always in UTF-8), the second should provide
464 the selection data on STDOUT (also in UTF-8).</p>
465 </dd>
466 <dd>
467 <p>The defaults (which are likely useless to you) use rsh and cat:</p>
468 </dd>
469 <dd>
470 <pre>
471 URxvt.remote-selection.store: rsh ruth 'cat &gt;/tmp/distributed-selection'
472 URxvt.remote-selection.fetch: rsh ruth 'cat /tmp/distributed-selection'</pre>
473 </dd>
474 </li>
475 <dt><strong><a name="item_selection_2dpastebin">selection-pastebin</a></strong>
476
477 <dd>
478 <p>This is a little rarely useful extension that Uploads the selection as
479 textfile to a remote site (or does other things). (The implementation is
480 not currently secure for use in a multiuser environment as it writes to
481 <em>/tmp</em> directly.).</p>
482 </dd>
483 <dd>
484 <p>It listens to the <code>selection-pastebin:remote-pastebin</code> keyboard command,
485 i.e.</p>
486 </dd>
487 <dd>
488 <pre>
489 URxvt.keysym.C-M-e: perl:selection-pastebin:remote-pastebin</pre>
490 </dd>
491 <dd>
492 <p>Pressing this combination runs a command with <code>%</code> replaced by the name of
493 the textfile. This command can be set via a resource:</p>
494 </dd>
495 <dd>
496 <pre>
497 URxvt.selection-pastebin.cmd: rsync -apP % ruth:/var/www/www.ta-sa.org/files/txt/.</pre>
498 </dd>
499 <dd>
500 <p>And the default is likely not useful to anybody but the few people around
501 here :)</p>
502 </dd>
503 <dd>
504 <p>The name of the textfile is the hex encoded md5 sum of the selection, so
505 the same content should lead to the same filename.</p>
506 </dd>
507 <dd>
508 <p>After a successful upload the selection will be replaced by the text given
509 in the <code>selection-pastebin-url</code> resource (again, the % is the placeholder
510 for the filename):</p>
511 </dd>
512 <dd>
513 <pre>
514 URxvt.selection-pastebin.url: <a href="http://www.ta-sa.org/files/txt/%">http://www.ta-sa.org/files/txt/%</a></pre>
515 </dd>
516 <dd>
517 <p><em>Note to xrdb users:</em> xrdb uses the C preprocessor, which might interpret
518 the double <code>/</code> characters as comment start. Use <code>\057\057</code> instead,
519 which works regardless of wether xrdb is used to parse the resource file
520 or not.</p>
521 </dd>
522 </li>
523 <dt><strong><a name="item_macosx_2dclipboard">macosx-clipboard</a></strong>
524
525 <dd>
526 <p>An extension for use on Mac OS X that enabled rxvt to use the
527 system clipboard by implementing two keyboard events.</p>
528 </dd>
529 <dd>
530 <p>This example configuration enables the extension and binds the copy and
531 paste functionality to Meta-C and Meta-V:</p>
532 </dd>
533 <dd>
534 <pre>
535 URxvt.perl-ext-common: default,macosx-clipboard
536 URxvt.keysym.M-c: perl:macosx-clipboard:copy
537 URxvt.keysym.M-v: perl:macosx-clipboard:paste</pre>
538 </dd>
539 </li>
540 <dt><strong><a name="item_example_2drefresh_2dhooks">example-refresh-hooks</a></strong>
541
542 <dd>
543 <p>Displays a very simple digital clock in the upper right corner of the
544 window. Illustrates overwriting the refresh callbacks to create your own
545 overlays or changes.</p>
546 </dd>
547 </li>
548 </dl>
549 <p>
550 </p>
551 <hr />
552 <h1><a name="api_documentation">API DOCUMENTATION</a></h1>
553 <p>
554 </p>
555 <h2><a name="general_api_considerations">General API Considerations</a></h2>
556 <p>All objects (such as terminals, time watchers etc.) are typical
557 reference-to-hash objects. The hash can be used to store anything you
558 like. All members starting with an underscore (such as <code>_ptr</code> or
559 <code>_hook</code>) are reserved for internal uses and <strong>MUST NOT</strong> be accessed or
560 modified).</p>
561 <p>When objects are destroyed on the C++ side, the perl object hashes are
562 emptied, so its best to store related objects such as time watchers and
563 the like inside the terminal object so they get destroyed as soon as the
564 terminal is destroyed.</p>
565 <p>Argument names also often indicate the type of a parameter. Here are some
566 hints on what they mean:</p>
567 <dl>
568 <dt><strong><a name="item__text">$text</a></strong>
569
570 <dd>
571 <p>Rxvt-unicodes special way of encoding text, where one ``unicode'' character
572 always represents one screen cell. See <a href="#item_row_t">ROW_t</a> for a discussion of this format.</p>
573 </dd>
574 </li>
575 <dt><strong><a name="item__string">$string</a></strong>
576
577 <dd>
578 <p>A perl text string, with an emphasis on <em>text</em>. It can store all unicode
579 characters and is to be distinguished with text encoded in a specific
580 encoding (often locale-specific) and binary data.</p>
581 </dd>
582 </li>
583 <dt><strong><a name="item__octets">$octets</a></strong>
584
585 <dd>
586 <p>Either binary data or - more common - a text string encoded in a
587 locale-specific way.</p>
588 </dd>
589 </li>
590 </dl>
591 <p>
592 </p>
593 <h2><a name="extension_objects">Extension Objects</a></h2>
594 <p>Every perl extension is a perl class. A separate perl object is created
595 for each terminal, and each terminal has its own set of extenion objects,
596 which are passed as the first parameter to hooks. So extensions can use
597 their <code>$self</code> object without having to think about clashes with other
598 extensions or other terminals, with the exception of methods and members
599 that begin with an underscore character <code>_</code>: these are reserved for
600 internal use.</p>
601 <p>Although it isn't a <code>urxvt::term</code> object, you can call all methods of the
602 <code>urxvt::term</code> class on this object.</p>
603 <p>It has the following methods and data members:</p>
604 <dl>
605 <dt><strong><a name="item__urxvt_term">$urxvt_term = $self-&gt;{term}</a></strong>
606
607 <dd>
608 <p>Returns the <code>urxvt::term</code> object associated with this instance of the
609 extension. This member <em>must not</em> be changed in any way.</p>
610 </dd>
611 </li>
612 <dt><strong><a name="item_enable">$self-&gt;enable ($hook_name =&gt; $cb, [$hook_name =&gt; $cb..])</a></strong>
613
614 <dd>
615 <p>Dynamically enable the given hooks (named without the <code>on_</code> prefix) for
616 this extension, replacing any previous hook. This is useful when you want
617 to overwrite time-critical hooks only temporarily.</p>
618 </dd>
619 </li>
620 <dt><strong><a name="item_disable">$self-&gt;disable ($hook_name[, $hook_name..])</a></strong>
621
622 <dd>
623 <p>Dynamically disable the given hooks.</p>
624 </dd>
625 </li>
626 </dl>
627 <p>
628 </p>
629 <h2><a name="hooks">Hooks</a></h2>
630 <p>The following subroutines can be declared in extension files, and will be
631 called whenever the relevant event happens.</p>
632 <p>The first argument passed to them is an extension object as described in
633 the in the <code>Extension Objects</code> section.</p>
634 <p><strong>All</strong> of these hooks must return a boolean value. If any of the called
635 hooks returns true, then the event counts as being <em>consumed</em>, and the
636 relevant action might not be carried out by the C++ code.</p>
637 <p><em>When in doubt, return a false value (preferably <code>()</code>). </em>&gt;</p>
638 <dl>
639 <dt><strong><a name="item_on_init__24term">on_init $term</a></strong>
640
641 <dd>
642 <p>Called after a new terminal object has been initialized, but before
643 windows are created or the command gets run. Most methods are unsafe to
644 call or deliver senseless data, as terminal size and other characteristics
645 have not yet been determined. You can safely query and change resources
646 and options, though. For many purposes the <code>on_start</code> hook is a better
647 place.</p>
648 </dd>
649 </li>
650 <dt><strong><a name="item_on_start__24term">on_start $term</a></strong>
651
652 <dd>
653 <p>Called at the very end of initialisation of a new terminal, just before
654 trying to map (display) the toplevel and returning to the main loop.</p>
655 </dd>
656 </li>
657 <dt><strong><a name="item_on_destroy__24term">on_destroy $term</a></strong>
658
659 <dd>
660 <p>Called whenever something tries to destroy terminal, when the terminal is
661 still fully functional (not for long, though).</p>
662 </dd>
663 </li>
664 <dt><strong><a name="item_on_reset__24term">on_reset $term</a></strong>
665
666 <dd>
667 <p>Called after the screen is ``reset'' for any reason, such as resizing or
668 control sequences. Here is where you can react on changes to size-related
669 variables.</p>
670 </dd>
671 </li>
672 <dt><strong><a name="item_on_child_start__24term_2c__24pid">on_child_start $term, $pid</a></strong>
673
674 <dd>
675 <p>Called just after the child process has been <code>fork</code>ed.</p>
676 </dd>
677 </li>
678 <dt><strong><a name="item_on_child_exit__24term_2c__24status">on_child_exit $term, $status</a></strong>
679
680 <dd>
681 <p>Called just after the child process has exited. <code>$status</code> is the status
682 from <code>waitpid</code>.</p>
683 </dd>
684 </li>
685 <dt><strong><a name="item_on_sel_make__24term_2c__24eventtime">on_sel_make $term, $eventtime</a></strong>
686
687 <dd>
688 <p>Called whenever a selection has been made by the user, but before the
689 selection text is copied, so changes to the beginning, end or type of the
690 selection will be honored.</p>
691 </dd>
692 <dd>
693 <p>Returning a true value aborts selection making by urxvt, in which case you
694 have to make a selection yourself by calling <a href="#item_selection_grab"><code>$term-&gt;selection_grab</code></a>.</p>
695 </dd>
696 </li>
697 <dt><strong><a name="item_on_sel_grab__24term_2c__24eventtime">on_sel_grab $term, $eventtime</a></strong>
698
699 <dd>
700 <p>Called whenever a selection has been copied, but before the selection is
701 requested from the server. The selection text can be queried and changed
702 by calling <a href="#item_selection"><code>$term-&gt;selection</code></a>.</p>
703 </dd>
704 <dd>
705 <p>Returning a true value aborts selection grabbing. It will still be highlighted.</p>
706 </dd>
707 </li>
708 <dt><strong><a name="item_on_sel_extend__24term">on_sel_extend $term</a></strong>
709
710 <dd>
711 <p>Called whenever the user tries to extend the selection (e.g. with a double
712 click) and is either supposed to return false (normal operation), or
713 should extend the selection itself and return true to suppress the built-in
714 processing. This can happen multiple times, as long as the callback
715 returns true, it will be called on every further click by the user and is
716 supposed to enlarge the selection more and more, if possible.</p>
717 </dd>
718 <dd>
719 <p>See the <em>selection</em> example extension.</p>
720 </dd>
721 </li>
722 <dt><strong><a name="item_on_view_change__24term_2c__24offset">on_view_change $term, $offset</a></strong>
723
724 <dd>
725 <p>Called whenever the view offset changes, i.e. the user or program
726 scrolls. Offset <code>0</code> means display the normal terminal, positive values
727 show this many lines of scrollback.</p>
728 </dd>
729 </li>
730 <dt><strong><a name="item_on_scroll_back__24term_2c__24lines_2c__24saved">on_scroll_back $term, $lines, $saved</a></strong>
731
732 <dd>
733 <p>Called whenever lines scroll out of the terminal area into the scrollback
734 buffer. <code>$lines</code> is the number of lines scrolled out and may be larger
735 than the scroll back buffer or the terminal.</p>
736 </dd>
737 <dd>
738 <p>It is called before lines are scrolled out (so rows 0 .. min ($lines - 1,
739 $nrow - 1) represent the lines to be scrolled out). <code>$saved</code> is the total
740 number of lines that will be in the scrollback buffer.</p>
741 </dd>
742 </li>
743 <dt><strong><a name="item_on_osc_seq__24term_2c__24op_2c__24args">on_osc_seq $term, $op, $args</a></strong>
744
745 <dd>
746 <p>Called on every OSC sequence and can be used to suppress it or modify its
747 behaviour. The default should be to return an empty list. A true value
748 suppresses execution of the request completely. Make sure you don't get
749 confused by recursive invocations when you output an osc sequence within
750 this callback.</p>
751 </dd>
752 <dd>
753 <p><code>on_osc_seq_perl</code> should be used for new behaviour.</p>
754 </dd>
755 </li>
756 <dt><strong><a name="item_on_osc_seq_perl__24term_2c__24string">on_osc_seq_perl $term, $string</a></strong>
757
758 <dd>
759 <p>Called whenever the <strong>ESC ] 777 ; string ST</strong> command sequence (OSC =
760 operating system command) is processed. Cursor position and other state
761 information is up-to-date when this happens. For interoperability, the
762 string should start with the extension name and a colon, to distinguish
763 it from commands for other extensions, and this might be enforced in the
764 future.</p>
765 </dd>
766 <dd>
767 <p>Be careful not ever to trust (in a security sense) the data you receive,
768 as its source can not easily be controlled (e-mail content, messages from
769 other users on the same system etc.).</p>
770 </dd>
771 </li>
772 <dt><strong><a name="item_on_add_lines__24term_2c__24string">on_add_lines $term, $string</a></strong>
773
774 <dd>
775 <p>Called whenever text is about to be output, with the text as argument. You
776 can filter/change and output the text yourself by returning a true value
777 and calling <a href="#item_scr_add_lines"><code>$term-&gt;scr_add_lines</code></a> yourself. Please note that this
778 might be very slow, however, as your hook is called for <strong>all</strong> text being
779 output.</p>
780 </dd>
781 </li>
782 <dt><strong><a name="item_on_tt_write__24term_2c__24octets">on_tt_write $term, $octets</a></strong>
783
784 <dd>
785 <p>Called whenever some data is written to the tty/pty and can be used to
786 suppress or filter tty input.</p>
787 </dd>
788 </li>
789 <dt><strong><a name="item_on_line_update__24term_2c__24row">on_line_update $term, $row</a></strong>
790
791 <dd>
792 <p>Called whenever a line was updated or changed. Can be used to filter
793 screen output (e.g. underline urls or other useless stuff). Only lines
794 that are being shown will be filtered, and, due to performance reasons,
795 not always immediately.</p>
796 </dd>
797 <dd>
798 <p>The row number is always the topmost row of the line if the line spans
799 multiple rows.</p>
800 </dd>
801 <dd>
802 <p>Please note that, if you change the line, then the hook might get called
803 later with the already-modified line (e.g. if unrelated parts change), so
804 you cannot just toggle rendition bits, but only set them.</p>
805 </dd>
806 </li>
807 <dt><strong><a name="item_on_refresh_begin__24term">on_refresh_begin $term</a></strong>
808
809 <dd>
810 <p>Called just before the screen gets redrawn. Can be used for overlay
811 or similar effects by modify terminal contents in refresh_begin, and
812 restoring them in refresh_end. The built-in overlay and selection display
813 code is run after this hook, and takes precedence.</p>
814 </dd>
815 </li>
816 <dt><strong><a name="item_on_refresh_end__24term">on_refresh_end $term</a></strong>
817
818 <dd>
819 <p>Called just after the screen gets redrawn. See <code>on_refresh_begin</code>.</p>
820 </dd>
821 </li>
822 <dt><strong><a name="item_on_user_command__24term_2c__24string">on_user_command $term, $string</a></strong>
823
824 <dd>
825 <p>Called whenever a user-configured event is being activated (e.g. via
826 a <code>perl:string</code> action bound to a key, see description of the <strong>keysym</strong>
827 resource in the <code>rxvt(1)</code> manpage).</p>
828 </dd>
829 <dd>
830 <p>The event is simply the action string. This interface is assumed to change
831 slightly in the future.</p>
832 </dd>
833 </li>
834 <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>
835
836 <dd>
837 <p>Called just after the new window size has been calculated, but before
838 windows are actually being resized or hints are being set. If this hook
839 returns TRUE, setting of the window hints is being skipped.</p>
840 </dd>
841 </li>
842 <dt><strong><a name="item_on_x_event__24term_2c__24event">on_x_event $term, $event</a></strong>
843
844 <dd>
845 <p>Called on every X event received on the vt window (and possibly other
846 windows). Should only be used as a last resort. Most event structure
847 members are not passed.</p>
848 </dd>
849 </li>
850 <dt><strong><a name="item_on_root_event__24term_2c__24event">on_root_event $term, $event</a></strong>
851
852 <dd>
853 <p>Like <code>on_x_event</code>, but is called for events on the root window.</p>
854 </dd>
855 </li>
856 <dt><strong><a name="item_on_focus_in__24term">on_focus_in $term</a></strong>
857
858 <dd>
859 <p>Called whenever the window gets the keyboard focus, before rxvt-unicode
860 does focus in processing.</p>
861 </dd>
862 </li>
863 <dt><strong><a name="item_on_focus_out__24term">on_focus_out $term</a></strong>
864
865 <dd>
866 <p>Called whenever the window loses keyboard focus, before rxvt-unicode does
867 focus out processing.</p>
868 </dd>
869 </li>
870 <dt><strong><a name="item_on_configure_notify__24term_2c__24event">on_configure_notify $term, $event</a></strong>
871
872 <dt><strong><a name="item_on_property_notify__24term_2c__24event">on_property_notify $term, $event</a></strong>
873
874 <dt><strong><a name="item_on_key_press__24term_2c__24event_2c__24keysym_2c__">on_key_press $term, $event, $keysym, $octets</a></strong>
875
876 <dt><strong><a name="item_on_key_release__24term_2c__24event_2c__24keysym">on_key_release $term, $event, $keysym</a></strong>
877
878 <dt><strong><a name="item_on_button_press__24term_2c__24event">on_button_press $term, $event</a></strong>
879
880 <dt><strong><a name="item_on_button_release__24term_2c__24event">on_button_release $term, $event</a></strong>
881
882 <dt><strong><a name="item_on_motion_notify__24term_2c__24event">on_motion_notify $term, $event</a></strong>
883
884 <dt><strong><a name="item_on_map_notify__24term_2c__24event">on_map_notify $term, $event</a></strong>
885
886 <dt><strong><a name="item_on_unmap_notify__24term_2c__24event">on_unmap_notify $term, $event</a></strong>
887
888 <dd>
889 <p>Called whenever the corresponding X event is received for the terminal If
890 the hook returns true, then the even will be ignored by rxvt-unicode.</p>
891 </dd>
892 <dd>
893 <p>The event is a hash with most values as named by Xlib (see the XEvent
894 manpage), with the additional members <code>row</code> and <code>col</code>, which are the
895 (real, not screen-based) row and column under the mouse cursor.</p>
896 </dd>
897 <dd>
898 <p><code>on_key_press</code> additionally receives the string rxvt-unicode would
899 output, if any, in locale-specific encoding.</p>
900 </dd>
901 <dd>
902 <p>subwindow.</p>
903 </dd>
904 </li>
905 <dt><strong><a name="item_on_client_message__24term_2c__24event">on_client_message $term, $event</a></strong>
906
907 <dt><strong><a name="item_on_wm_protocols__24term_2c__24event">on_wm_protocols $term, $event</a></strong>
908
909 <dt><strong><a name="item_on_wm_delete_window__24term_2c__24event">on_wm_delete_window $term, $event</a></strong>
910
911 <dd>
912 <p>Called when various types of ClientMessage events are received (all with
913 format=32, WM_PROTOCOLS or WM_PROTOCOLS:WM_DELETE_WINDOW).</p>
914 </dd>
915 </li>
916 </dl>
917 <p>
918 </p>
919 <h2><a name="variables_in_the_urxvt_package">Variables in the <code>urxvt</code> Package</a></h2>
920 <dl>
921 <dt><strong><a name="item__urxvt__libdir">$urxvt::LIBDIR</a></strong>
922
923 <dd>
924 <p>The rxvt-unicode library directory, where, among other things, the perl
925 modules and scripts are stored.</p>
926 </dd>
927 </li>
928 <dt><strong><a name="item__urxvt__resclass_">$urxvt::RESCLASS, $urxvt::RESCLASS</a></strong>
929
930 <dd>
931 <p>The resource class and name rxvt-unicode uses to look up X resources.</p>
932 </dd>
933 </li>
934 <dt><strong><a name="item__urxvt__rxvtname">$urxvt::RXVTNAME</a></strong>
935
936 <dd>
937 <p>The basename of the installed binaries, usually <code>urxvt</code>.</p>
938 </dd>
939 </li>
940 <dt><strong><a name="item__urxvt__term">$urxvt::TERM</a></strong>
941
942 <dd>
943 <p>The current terminal. This variable stores the current <code>urxvt::term</code>
944 object, whenever a callback/hook is executing.</p>
945 </dd>
946 </li>
947 <dt><strong><a name="item__urxvt__term_init">@urxvt::TERM_INIT</a></strong>
948
949 <dd>
950 <p>All code references in this array will be called as methods of the next newly
951 created <code>urxvt::term</code> object (during the <code>on_init</code> phase). The array
952 gets cleared before the code references that were in it are being executed,
953 so references can push themselves onto it again if they so desire.</p>
954 </dd>
955 <dd>
956 <p>This complements to the perl-eval command line option, but gets executed
957 first.</p>
958 </dd>
959 </li>
960 <dt><strong><a name="item__urxvt__term_ext">@urxvt::TERM_EXT</a></strong>
961
962 <dd>
963 <p>Works similar to <code>@TERM_INIT</code>, but contains perl package/class names, which
964 get registered as normal extensions after calling the hooks in <code>@TERM_INIT</code>
965 but before other extensions. Gets cleared just like <code>@TERM_INIT</code>.</p>
966 </dd>
967 </li>
968 </dl>
969 <p>
970 </p>
971 <h2><a name="functions_in_the_urxvt_package">Functions in the <code>urxvt</code> Package</a></h2>
972 <dl>
973 <dt><strong><a name="item_urxvt_3a_3afatal__24errormessage">urxvt::fatal $errormessage</a></strong>
974
975 <dd>
976 <p>Fatally aborts execution with the given error message. Avoid at all
977 costs! The only time this is acceptable is when the terminal process
978 starts up.</p>
979 </dd>
980 </li>
981 <dt><strong><a name="item_urxvt_3a_3awarn__24string">urxvt::warn $string</a></strong>
982
983 <dd>
984 <p>Calls <code>rxvt_warn</code> with the given string which should not include a
985 newline. The module also overwrites the <code>warn</code> builtin with a function
986 that calls this function.</p>
987 </dd>
988 <dd>
989 <p>Using this function has the advantage that its output ends up in the
990 correct place, e.g. on stderr of the connecting urxvtc client.</p>
991 </dd>
992 <dd>
993 <p>Messages have a size limit of 1023 bytes currently.</p>
994 </dd>
995 </li>
996 <dt><strong><a name="item__terms">@terms = urxvt::termlist</a></strong>
997
998 <dd>
999 <p>Returns all urxvt::term objects that exist in this process, regardless of
1000 whether they are started, being destroyed etc., so be careful. Only term
1001 objects that have perl extensions attached will be returned (because there
1002 is no urxvt::term objet associated with others).</p>
1003 </dd>
1004 </li>
1005 <dt><strong><a name="item__time">$time = urxvt::NOW</a></strong>
1006
1007 <dd>
1008 <p>Returns the ``current time'' (as per the event loop).</p>
1009 </dd>
1010 </li>
1011 <dt><strong><a name="item_urxvt_3a_3acurrenttime">urxvt::CurrentTime</a></strong>
1012
1013 <dt><strong><a name="item_urxvt_3a_3ashiftmask_2c_lockmask_2c_controlmask_2c">urxvt::ShiftMask, LockMask, ControlMask, Mod1Mask, Mod2Mask,
1014 Mod3Mask, Mod4Mask, Mod5Mask, Button1Mask, Button2Mask, Button3Mask,
1015 Button4Mask, Button5Mask, AnyModifier</a></strong>
1016
1017 <dt><strong><a name="item_urxvt_3a_3anoeventmask_2c_keypressmask_2c_keyrelea">urxvt::NoEventMask, KeyPressMask, KeyReleaseMask,
1018 ButtonPressMask, ButtonReleaseMask, EnterWindowMask, LeaveWindowMask,
1019 PointerMotionMask, PointerMotionHintMask, Button1MotionMask, Button2MotionMask,
1020 Button3MotionMask, Button4MotionMask, Button5MotionMask, ButtonMotionMask,
1021 KeymapStateMask, ExposureMask, VisibilityChangeMask, StructureNotifyMask,
1022 ResizeRedirectMask, SubstructureNotifyMask, SubstructureRedirectMask,
1023 FocusChangeMask, PropertyChangeMask, ColormapChangeMask, OwnerGrabButtonMask</a></strong>
1024
1025 <dt><strong><a name="item_urxvt_3a_3akeypress_2c_keyrelease_2c_buttonpress_2">urxvt::KeyPress, KeyRelease, ButtonPress, ButtonRelease, MotionNotify,
1026 EnterNotify, LeaveNotify, FocusIn, FocusOut, KeymapNotify, Expose,
1027 GraphicsExpose, NoExpose, VisibilityNotify, CreateNotify, DestroyNotify,
1028 UnmapNotify, MapNotify, MapRequest, ReparentNotify, ConfigureNotify,
1029 ConfigureRequest, GravityNotify, ResizeRequest, CirculateNotify,
1030 CirculateRequest, PropertyNotify, SelectionClear, SelectionRequest,
1031 SelectionNotify, ColormapNotify, ClientMessage, MappingNotify</a></strong>
1032
1033 <dd>
1034 <p>Various constants for use in X calls and event processing.</p>
1035 </dd>
1036 </li>
1037 </dl>
1038 <p>
1039 </p>
1040 <h2><a name="rendition">RENDITION</a></h2>
1041 <p>Rendition bitsets contain information about colour, font, font styles and
1042 similar information for each screen cell.</p>
1043 <p>The following ``macros'' deal with changes in rendition sets. You should
1044 never just create a bitset, you should always modify an existing one,
1045 as they contain important information required for correct operation of
1046 rxvt-unicode.</p>
1047 <dl>
1048 <dt><strong><a name="item__rend">$rend = urxvt::DEFAULT_RSTYLE</a></strong>
1049
1050 <dd>
1051 <p>Returns the default rendition, as used when the terminal is starting up or
1052 being reset. Useful as a base to start when creating renditions.</p>
1053 </dd>
1054 </li>
1055 <dt><strong>$rend = urxvt::OVERLAY_RSTYLE</strong>
1056
1057 <dd>
1058 <p>Return the rendition mask used for overlays by default.</p>
1059 </dd>
1060 </li>
1061 <dt><strong><a name="item__rendbit">$rendbit = urxvt::RS_Bold, RS_Italic, RS_Blink, RS_RVid, RS_Uline</a></strong>
1062
1063 <dd>
1064 <p>Return the bit that enabled bold, italic, blink, reverse-video and
1065 underline, respectively. To enable such a style, just logically OR it into
1066 the bitset.</p>
1067 </dd>
1068 </li>
1069 <dt><strong><a name="item__foreground">$foreground = urxvt::GET_BASEFG $rend</a></strong>
1070
1071 <dt><strong><a name="item__background">$background = urxvt::GET_BASEBG $rend</a></strong>
1072
1073 <dd>
1074 <p>Return the foreground/background colour index, respectively.</p>
1075 </dd>
1076 </li>
1077 <dt><strong>$rend = urxvt::SET_FGCOLOR $rend, $new_colour</strong>
1078
1079 <dt><strong>$rend = urxvt::SET_BGCOLOR $rend, $new_colour</strong>
1080
1081 <dt><strong>$rend = urxvt::SET_COLOR $rend, $new_fg, $new_bg</strong>
1082
1083 <dd>
1084 <p>Replace the foreground/background colour in the rendition mask with the
1085 specified one.</p>
1086 </dd>
1087 </li>
1088 <dt><strong><a name="item__value">$value = urxvt::GET_CUSTOM $rend</a></strong>
1089
1090 <dd>
1091 <p>Return the ``custom'' value: Every rendition has 5 bits for use by
1092 extensions. They can be set and changed as you like and are initially
1093 zero.</p>
1094 </dd>
1095 </li>
1096 <dt><strong>$rend = urxvt::SET_CUSTOM $rend, $new_value</strong>
1097
1098 <dd>
1099 <p>Change the custom value.</p>
1100 </dd>
1101 </li>
1102 </dl>
1103 <p>
1104 </p>
1105 <h2><a name="the_urxvt__anyevent_class">The <code>urxvt::anyevent</code> Class</a></h2>
1106 <p>The sole purpose of this class is to deliver an interface to the
1107 <code>AnyEvent</code> module - any module using it will work inside urxvt without
1108 further programming. The only exception is that you cannot wait on
1109 condition variables, but non-blocking condvar use is ok. What this means
1110 is that you cannot use blocking APIs, but the non-blocking variant should
1111 work.</p>
1112 <p>
1113 </p>
1114 <h2><a name="the_urxvt__term_class">The <code>urxvt::term</code> Class</a></h2>
1115 <dl>
1116 <dt><strong><a name="item__term">$term = new urxvt::term $envhashref, $rxvtname, [arg...]</a></strong>
1117
1118 <dd>
1119 <p>Creates a new terminal, very similar as if you had started it with system
1120 <code>$rxvtname, arg...</code>. <code>$envhashref</code> must be a reference to a <code>%ENV</code>-like
1121 hash which defines the environment of the new terminal.</p>
1122 </dd>
1123 <dd>
1124 <p>Croaks (and probably outputs an error message) if the new instance
1125 couldn't be created. Returns <code>undef</code> if the new instance didn't
1126 initialise perl, and the terminal object otherwise. The <code>init</code> and
1127 <a href="#item_start"><code>start</code></a> hooks will be called before this call returns, and are free to
1128 refer to global data (which is race free).</p>
1129 </dd>
1130 </li>
1131 <dt><strong><a name="item_destroy">$term-&gt;destroy</a></strong>
1132
1133 <dd>
1134 <p>Destroy the terminal object (close the window, free resources
1135 etc.). Please note that rxvt will not exit as long as any event
1136 watchers (timers, io watchers) are still active.</p>
1137 </dd>
1138 </li>
1139 <dt><strong><a name="item_exec_async">$term-&gt;exec_async ($cmd[, @args])</a></strong>
1140
1141 <dd>
1142 <p>Works like the combination of the <code>fork</code>/<code>exec</code> builtins, which executes
1143 (``starts'') programs in the background. This function takes care of setting
1144 the user environment before exec'ing the command (e.g. <code>PATH</code>) and should
1145 be preferred over explicit calls to <code>exec</code> or <code>system</code>.</p>
1146 </dd>
1147 <dd>
1148 <p>Returns the pid of the subprocess or <code>undef</code> on error.</p>
1149 </dd>
1150 </li>
1151 <dt><strong><a name="item_option">$isset = $term-&gt;option ($optval[, $set])</a></strong>
1152
1153 <dd>
1154 <p>Returns true if the option specified by <code>$optval</code> is enabled, and
1155 optionally change it. All option values are stored by name in the hash
1156 <code>%urxvt::OPTION</code>. Options not enabled in this binary are not in the hash.</p>
1157 </dd>
1158 <dd>
1159 <p>Here is a likely non-exhaustive list of option names, please see the
1160 source file <em>/src/optinc.h</em> to see the actual list:</p>
1161 </dd>
1162 <dd>
1163 <pre>
1164 borderLess console cursorBlink cursorUnderline hold iconic insecure
1165 intensityStyles jumpScroll loginShell mapAlert meta8 mouseWheelScrollPage
1166 override-redirect pastableTabs pointerBlank reverseVideo scrollBar
1167 scrollBar_floating scrollBar_right scrollTtyKeypress scrollTtyOutput
1168 scrollWithBuffer secondaryScreen secondaryScroll skipBuiltinGlyphs
1169 transparent tripleclickwords utmpInhibit visualBell</pre>
1170 </dd>
1171 </li>
1172 <dt><strong><a name="item_resource">$value = $term-&gt;resource ($name[, $newval])</a></strong>
1173
1174 <dd>
1175 <p>Returns the current resource value associated with a given name and
1176 optionally sets a new value. Setting values is most useful in the <code>init</code>
1177 hook. Unset resources are returned and accepted as <code>undef</code>.</p>
1178 </dd>
1179 <dd>
1180 <p>The new value must be properly encoded to a suitable character encoding
1181 before passing it to this method. Similarly, the returned value may need
1182 to be converted from the used encoding to text.</p>
1183 </dd>
1184 <dd>
1185 <p>Resource names are as defined in <em>src/rsinc.h</em>. Colours can be specified
1186 as resource names of the form <code>color+&lt;index&gt;</code>, e.g. <code>color+5</code>. (will
1187 likely change).</p>
1188 </dd>
1189 <dd>
1190 <p>Please note that resource strings will currently only be freed when the
1191 terminal is destroyed, so changing options frequently will eat memory.</p>
1192 </dd>
1193 <dd>
1194 <p>Here is a likely non-exhaustive list of resource names, not all of which
1195 are supported in every build, please see the source file <em>/src/rsinc.h</em>
1196 to see the actual list:</p>
1197 </dd>
1198 <dd>
1199 <pre>
1200 answerbackstring backgroundPixmap backspace_key boldFont boldItalicFont
1201 borderLess color cursorBlink cursorUnderline cutchars delete_key
1202 display_name embed ext_bwidth fade font geometry hold iconName
1203 imFont imLocale inputMethod insecure int_bwidth intensityStyles
1204 italicFont jumpScroll lineSpace loginShell mapAlert meta8 modifier
1205 mouseWheelScrollPage name override_redirect pastableTabs path perl_eval
1206 perl_ext_1 perl_ext_2 perl_lib pointerBlank pointerBlankDelay
1207 preeditType print_pipe pty_fd reverseVideo saveLines scrollBar
1208 scrollBar_align scrollBar_floating scrollBar_right scrollBar_thickness
1209 scrollTtyKeypress scrollTtyOutput scrollWithBuffer scrollstyle
1210 secondaryScreen secondaryScroll selectstyle shade term_name title
1211 transient_for transparent transparent_all tripleclickwords utmpInhibit
1212 visualBell</pre>
1213 </dd>
1214 </li>
1215 <dt><strong><a name="item_x_resource">$value = $term-&gt;x_resource ($pattern)</a></strong>
1216
1217 <dd>
1218 <p>Returns the X-Resource for the given pattern, excluding the program or
1219 class name, i.e. <a href="#item_x_resource"><code>$term-&gt;x_resource (&quot;boldFont&quot;)</code></a> should return the
1220 same value as used by this instance of rxvt-unicode. Returns <code>undef</code> if no
1221 resource with that pattern exists.</p>
1222 </dd>
1223 <dd>
1224 <p>This method should only be called during the <code>on_start</code> hook, as there is
1225 only one resource database per display, and later invocations might return
1226 the wrong resources.</p>
1227 </dd>
1228 </li>
1229 <dt><strong><a name="item_parse_keysym">$success = $term-&gt;parse_keysym ($keysym_spec, $command_string)</a></strong>
1230
1231 <dd>
1232 <p>Adds a keymap translation exactly as specified via a resource. See the
1233 <code>keysym</code> resource in the <code>rxvt(1)</code> manpage.</p>
1234 </dd>
1235 </li>
1236 <dt><strong><a name="item_rstyle">$rend = $term-&gt;rstyle ([$new_rstyle])</a></strong>
1237
1238 <dd>
1239 <p>Return and optionally change the current rendition. Text that is output by
1240 the terminal application will use this style.</p>
1241 </dd>
1242 </li>
1243 <dt><strong><a name="item_screen_cur">($row, $col) = $term-&gt;screen_cur ([$row, $col])</a></strong>
1244
1245 <dd>
1246 <p>Return the current coordinates of the text cursor position and optionally
1247 set it (which is usually bad as applications don't expect that).</p>
1248 </dd>
1249 </li>
1250 <dt><strong><a name="item_selection_mark">($row, $col) = $term-&gt;selection_mark ([$row, $col])</a></strong>
1251
1252 <dt><strong><a name="item_selection_beg">($row, $col) = $term-&gt;selection_beg ([$row, $col])</a></strong>
1253
1254 <dt><strong><a name="item_selection_end">($row, $col) = $term-&gt;selection_end ([$row, $col])</a></strong>
1255
1256 <dd>
1257 <p>Return the current values of the selection mark, begin or end positions,
1258 and optionally set them to new values.</p>
1259 </dd>
1260 </li>
1261 <dt><strong><a name="item_selection_make">$term-&gt;selection_make ($eventtime[, $rectangular])</a></strong>
1262
1263 <dd>
1264 <p>Tries to make a selection as set by <a href="#item_selection_beg"><code>selection_beg</code></a> and
1265 <a href="#item_selection_end"><code>selection_end</code></a>. If <code>$rectangular</code> is true (default: false), a
1266 rectangular selection will be made. This is the prefered function to make
1267 a selection.</p>
1268 </dd>
1269 </li>
1270 <dt><strong><a name="item_selection_grab">$success = $term-&gt;selection_grab ($eventtime)</a></strong>
1271
1272 <dd>
1273 <p>Try to request the primary selection text from the server (for example, as
1274 set by the next method). No visual feedback will be given. This function
1275 is mostly useful from within <code>on_sel_grab</code> hooks.</p>
1276 </dd>
1277 </li>
1278 <dt><strong>$oldtext = $term-&gt;selection ([$newtext])</strong>
1279
1280 <dd>
1281 <p>Return the current selection text and optionally replace it by <code>$newtext</code>.</p>
1282 </dd>
1283 </li>
1284 <dt><strong><a name="item_overlay_simple">$term-&gt;overlay_simple ($x, $y, $text)</a></strong>
1285
1286 <dd>
1287 <p>Create a simple multi-line overlay box. See the next method for details.</p>
1288 </dd>
1289 </li>
1290 <dt><strong><a name="item_overlay">$term-&gt;overlay ($x, $y, $width, $height[, $rstyle[, $border]])</a></strong>
1291
1292 <dd>
1293 <p>Create a new (empty) overlay at the given position with the given
1294 width/height. <code>$rstyle</code> defines the initial rendition style
1295 (default: <code>OVERLAY_RSTYLE</code>).</p>
1296 </dd>
1297 <dd>
1298 <p>If <code>$border</code> is <code>2</code> (default), then a decorative border will be put
1299 around the box.</p>
1300 </dd>
1301 <dd>
1302 <p>If either <code>$x</code> or <code>$y</code> is negative, then this is counted from the
1303 right/bottom side, respectively.</p>
1304 </dd>
1305 <dd>
1306 <p>This method returns an urxvt::overlay object. The overlay will be visible
1307 as long as the perl object is referenced.</p>
1308 </dd>
1309 <dd>
1310 <p>The methods currently supported on <code>urxvt::overlay</code> objects are:</p>
1311 </dd>
1312 <dl>
1313 <dt><strong><a name="item_set">$overlay-&gt;set ($x, $y, $text, $rend)</a></strong>
1314
1315 <dd>
1316 <p>Similar to <a href="#item_row_t"><code>$term-&gt;ROW_t</code></a> and <a href="#item_row_r"><code>$term-&gt;ROW_r</code></a> in that it puts
1317 text in rxvt-unicode's special encoding and an array of rendition values
1318 at a specific position inside the overlay.</p>
1319 </dd>
1320 </li>
1321 <dt><strong><a name="item_hide">$overlay-&gt;hide</a></strong>
1322
1323 <dd>
1324 <p>If visible, hide the overlay, but do not destroy it.</p>
1325 </dd>
1326 </li>
1327 <dt><strong><a name="item_show">$overlay-&gt;show</a></strong>
1328
1329 <dd>
1330 <p>If hidden, display the overlay again.</p>
1331 </dd>
1332 </li>
1333 </dl>
1334 <dt><strong>$popup = $term-&gt;popup ($event)</strong>
1335
1336 <dd>
1337 <p>Creates a new <code>urxvt::popup</code> object that implements a popup menu. The
1338 <code>$event</code> <em>must</em> be the event causing the menu to pop up (a button event,
1339 currently).</p>
1340 </dd>
1341 </li>
1342 <dt><strong><a name="item_strwidth">$cellwidth = $term-&gt;strwidth ($string)</a></strong>
1343
1344 <dd>
1345 <p>Returns the number of screen-cells this string would need. Correctly
1346 accounts for wide and combining characters.</p>
1347 </dd>
1348 </li>
1349 <dt><strong><a name="item_locale_encode">$octets = $term-&gt;locale_encode ($string)</a></strong>
1350
1351 <dd>
1352 <p>Convert the given text string into the corresponding locale encoding.</p>
1353 </dd>
1354 </li>
1355 <dt><strong><a name="item_locale_decode">$string = $term-&gt;locale_decode ($octets)</a></strong>
1356
1357 <dd>
1358 <p>Convert the given locale-encoded octets into a perl string.</p>
1359 </dd>
1360 </li>
1361 <dt><strong><a name="item_scr_xor_span">$term-&gt;scr_xor_span ($beg_row, $beg_col, $end_row, $end_col[, $rstyle])</a></strong>
1362
1363 <dd>
1364 <p>XORs the rendition values in the given span with the provided value
1365 (default: <code>RS_RVid</code>), which <em>MUST NOT</em> contain font styles. Useful in
1366 refresh hooks to provide effects similar to the selection.</p>
1367 </dd>
1368 </li>
1369 <dt><strong><a name="item_scr_xor_rect">$term-&gt;scr_xor_rect ($beg_row, $beg_col, $end_row, $end_col[, $rstyle1[, $rstyle2]])</a></strong>
1370
1371 <dd>
1372 <p>Similar to <a href="#item_scr_xor_span"><code>scr_xor_span</code></a>, but xors a rectangle instead. Trailing
1373 whitespace will additionally be xored with the <code>$rstyle2</code>, which defaults
1374 to <code>RS_RVid | RS_Uline</code>, which removes reverse video again and underlines
1375 it instead. Both styles <em>MUST NOT</em> contain font styles.</p>
1376 </dd>
1377 </li>
1378 <dt><strong><a name="item_scr_bell">$term-&gt;scr_bell</a></strong>
1379
1380 <dd>
1381 <p>Ring the bell!</p>
1382 </dd>
1383 </li>
1384 <dt><strong><a name="item_scr_add_lines">$term-&gt;scr_add_lines ($string)</a></strong>
1385
1386 <dd>
1387 <p>Write the given text string to the screen, as if output by the application
1388 running inside the terminal. It may not contain command sequences (escape
1389 codes), but is free to use line feeds, carriage returns and tabs. The
1390 string is a normal text string, not in locale-dependent encoding.</p>
1391 </dd>
1392 <dd>
1393 <p>Normally its not a good idea to use this function, as programs might be
1394 confused by changes in cursor position or scrolling. Its useful inside a
1395 <code>on_add_lines</code> hook, though.</p>
1396 </dd>
1397 </li>
1398 <dt><strong><a name="item_scr_change_screen">$term-&gt;scr_change_screen ($screen)</a></strong>
1399
1400 <dd>
1401 <p>Switch to given screen - 0 primary, 1 secondary.</p>
1402 </dd>
1403 </li>
1404 <dt><strong><a name="item_cmd_parse">$term-&gt;cmd_parse ($octets)</a></strong>
1405
1406 <dd>
1407 <p>Similar to <a href="#item_scr_add_lines"><code>scr_add_lines</code></a>, but the argument must be in the
1408 locale-specific encoding of the terminal and can contain command sequences
1409 (escape codes) that will be interpreted.</p>
1410 </dd>
1411 </li>
1412 <dt><strong><a name="item_tt_write">$term-&gt;tt_write ($octets)</a></strong>
1413
1414 <dd>
1415 <p>Write the octets given in <code>$data</code> to the tty (i.e. as program input). To
1416 pass characters instead of octets, you should convert your strings first
1417 to the locale-specific encoding using <a href="#item_locale_encode"><code>$term-&gt;locale_encode</code></a>.</p>
1418 </dd>
1419 </li>
1420 <dt><strong><a name="item_pty_ev_events">$old_events = $term-&gt;pty_ev_events ([$new_events])</a></strong>
1421
1422 <dd>
1423 <p>Replaces the event mask of the pty watcher by the given event mask. Can
1424 be used to suppress input and output handling to the pty/tty. See the
1425 description of <a href="#item_events"><code>urxvt::timer-&gt;events</code></a>. Make sure to always restore
1426 the previous value.</p>
1427 </dd>
1428 </li>
1429 <dt><strong><a name="item_pty_fd">$fd = $term-&gt;pty_fd</a></strong>
1430
1431 <dd>
1432 <p>Returns the master file descriptor for the pty in use, or <code>-1</code> if no pty
1433 is used.</p>
1434 </dd>
1435 </li>
1436 <dt><strong><a name="item_parent">$windowid = $term-&gt;parent</a></strong>
1437
1438 <dd>
1439 <p>Return the window id of the toplevel window.</p>
1440 </dd>
1441 </li>
1442 <dt><strong><a name="item_vt">$windowid = $term-&gt;vt</a></strong>
1443
1444 <dd>
1445 <p>Return the window id of the terminal window.</p>
1446 </dd>
1447 </li>
1448 <dt><strong><a name="item_vt_emask_add">$term-&gt;vt_emask_add ($x_event_mask)</a></strong>
1449
1450 <dd>
1451 <p>Adds the specified events to the vt event mask. Useful e.g. when you want
1452 to receive pointer events all the times:</p>
1453 </dd>
1454 <dd>
1455 <pre>
1456 $term-&gt;vt_emask_add (urxvt::PointerMotionMask);</pre>
1457 </dd>
1458 </li>
1459 <dt><strong><a name="item_focus_in">$term-&gt;focus_in</a></strong>
1460
1461 <dt><strong><a name="item_focus_out">$term-&gt;focus_out</a></strong>
1462
1463 <dt><strong><a name="item_key_press">$term-&gt;key_press ($state, $keycode[, $time])</a></strong>
1464
1465 <dt><strong><a name="item_key_release">$term-&gt;key_release ($state, $keycode[, $time])</a></strong>
1466
1467 <dd>
1468 <p>Deliver various fake events to to terminal.</p>
1469 </dd>
1470 </li>
1471 <dt><strong><a name="item_width">$window_width = $term-&gt;width</a></strong>
1472
1473 <dt><strong><a name="item_height">$window_height = $term-&gt;height</a></strong>
1474
1475 <dt><strong><a name="item_fwidth">$font_width = $term-&gt;fwidth</a></strong>
1476
1477 <dt><strong><a name="item_fheight">$font_height = $term-&gt;fheight</a></strong>
1478
1479 <dt><strong><a name="item_fbase">$font_ascent = $term-&gt;fbase</a></strong>
1480
1481 <dt><strong><a name="item_nrow">$terminal_rows = $term-&gt;nrow</a></strong>
1482
1483 <dt><strong><a name="item_ncol">$terminal_columns = $term-&gt;ncol</a></strong>
1484
1485 <dt><strong><a name="item_focus">$has_focus = $term-&gt;focus</a></strong>
1486
1487 <dt><strong><a name="item_mapped">$is_mapped = $term-&gt;mapped</a></strong>
1488
1489 <dt><strong><a name="item_savelines">$max_scrollback = $term-&gt;saveLines</a></strong>
1490
1491 <dt><strong><a name="item_total_rows">$nrow_plus_saveLines = $term-&gt;total_rows</a></strong>
1492
1493 <dt><strong><a name="item_top_row">$topmost_scrollback_row = $term-&gt;top_row</a></strong>
1494
1495 <dd>
1496 <p>Return various integers describing terminal characteristics.</p>
1497 </dd>
1498 </li>
1499 <dt><strong><a name="item_display_id">$x_display = $term-&gt;display_id</a></strong>
1500
1501 <dd>
1502 <p>Return the DISPLAY used by rxvt-unicode.</p>
1503 </dd>
1504 </li>
1505 <dt><strong><a name="item_locale">$lc_ctype = $term-&gt;locale</a></strong>
1506
1507 <dd>
1508 <p>Returns the LC_CTYPE category string used by this rxvt-unicode.</p>
1509 </dd>
1510 </li>
1511 <dt><strong><a name="item_env">$env = $term-&gt;env</a></strong>
1512
1513 <dd>
1514 <p>Returns a copy of the environment in effect for the terminal as a hashref
1515 similar to <code>\%ENV</code>.</p>
1516 </dd>
1517 </li>
1518 <dt><strong><a name="item_envv">@envv = $term-&gt;envv</a></strong>
1519
1520 <dd>
1521 <p>Returns the environment as array of strings of the form <code>VAR=VALUE</code>.</p>
1522 </dd>
1523 </li>
1524 <dt><strong><a name="item_argv">@argv = $term-&gt;argv</a></strong>
1525
1526 <dd>
1527 <p>Return the argument vector as this terminal, similar to @ARGV, but
1528 includes the program name as first element.</p>
1529 </dd>
1530 </li>
1531 <dt><strong><a name="item_modlevel3mask">$modifiermask = $term-&gt;ModLevel3Mask</a></strong>
1532
1533 <dt><strong><a name="item_modmetamask">$modifiermask = $term-&gt;ModMetaMask</a></strong>
1534
1535 <dt><strong><a name="item_modnumlockmask">$modifiermask = $term-&gt;ModNumLockMask</a></strong>
1536
1537 <dd>
1538 <p>Return the modifier masks corresponding to the ``ISO Level 3 Shift'' (often
1539 AltGr), the meta key (often Alt) and the num lock key, if applicable.</p>
1540 </dd>
1541 </li>
1542 <dt><strong><a name="item_current_screen">$screen = $term-&gt;current_screen</a></strong>
1543
1544 <dd>
1545 <p>Returns the currently displayed screen (0 primary, 1 secondary).</p>
1546 </dd>
1547 </li>
1548 <dt><strong><a name="item_hidden_cursor">$cursor_is_hidden = $term-&gt;hidden_cursor</a></strong>
1549
1550 <dd>
1551 <p>Returns whether the cursor is currently hidden or not.</p>
1552 </dd>
1553 </li>
1554 <dt><strong><a name="item_view_start">$view_start = $term-&gt;view_start ([$newvalue])</a></strong>
1555
1556 <dd>
1557 <p>Returns the row number of the topmost displayed line. Maximum value is
1558 <code>0</code>, which displays the normal terminal contents. Lower values scroll
1559 this many lines into the scrollback buffer.</p>
1560 </dd>
1561 </li>
1562 <dt><strong><a name="item_want_refresh">$term-&gt;want_refresh</a></strong>
1563
1564 <dd>
1565 <p>Requests a screen refresh. At the next opportunity, rxvt-unicode will
1566 compare the on-screen display with its stored representation. If they
1567 differ, it redraws the differences.</p>
1568 </dd>
1569 <dd>
1570 <p>Used after changing terminal contents to display them.</p>
1571 </dd>
1572 </li>
1573 <dt><strong><a name="item_row_t">$text = $term-&gt;ROW_t ($row_number[, $new_text[, $start_col]])</a></strong>
1574
1575 <dd>
1576 <p>Returns the text of the entire row with number <code>$row_number</code>. Row <code>0</code>
1577 is the topmost terminal line, row <code>$term-&gt;$ncol-1</code> is the bottommost
1578 terminal line. The scrollback buffer starts at line <code>-1</code> and extends to
1579 line <code>-$term-&gt;nsaved</code>. Nothing will be returned if a nonexistent line
1580 is requested.</p>
1581 </dd>
1582 <dd>
1583 <p>If <code>$new_text</code> is specified, it will replace characters in the current
1584 line, starting at column <code>$start_col</code> (default <code>0</code>), which is useful
1585 to replace only parts of a line. The font index in the rendition will
1586 automatically be updated.</p>
1587 </dd>
1588 <dd>
1589 <p><a href="#item__text"><code>$text</code></a> is in a special encoding: tabs and wide characters that use more
1590 than one cell when displayed are padded with <code>$urxvt::NOCHAR</code> (chr 65535)
1591 characters. Characters with combining characters and other characters that
1592 do not fit into the normal tetx encoding will be replaced with characters
1593 in the private use area.</p>
1594 </dd>
1595 <dd>
1596 <p>You have to obey this encoding when changing text. The advantage is
1597 that <code>substr</code> and similar functions work on screen cells and not on
1598 characters.</p>
1599 </dd>
1600 <dd>
1601 <p>The methods <a href="#item_special_encode"><code>$term-&gt;special_encode</code></a> and <a href="#item_special_decode"><code>$term-&gt;special_decode</code></a>
1602 can be used to convert normal strings into this encoding and vice versa.</p>
1603 </dd>
1604 </li>
1605 <dt><strong><a name="item_row_r">$rend = $term-&gt;ROW_r ($row_number[, $new_rend[, $start_col]])</a></strong>
1606
1607 <dd>
1608 <p>Like <a href="#item_row_t"><code>$term-&gt;ROW_t</code></a>, but returns an arrayref with rendition
1609 bitsets. Rendition bitsets contain information about colour, font, font
1610 styles and similar information. See also <a href="#item_row_t"><code>$term-&gt;ROW_t</code></a>.</p>
1611 </dd>
1612 <dd>
1613 <p>When setting rendition, the font mask will be ignored.</p>
1614 </dd>
1615 <dd>
1616 <p>See the section on RENDITION, above.</p>
1617 </dd>
1618 </li>
1619 <dt><strong><a name="item_row_l">$length = $term-&gt;ROW_l ($row_number[, $new_length])</a></strong>
1620
1621 <dd>
1622 <p>Returns the number of screen cells that are in use (``the line
1623 length''). Unlike the urxvt core, this returns <a href="#item_ncol"><code>$term-&gt;ncol</code></a> if the
1624 line is joined with the following one.</p>
1625 </dd>
1626 </li>
1627 <dt><strong><a name="item_is_longer">$bool = $term-&gt;is_longer ($row_number)</a></strong>
1628
1629 <dd>
1630 <p>Returns true if the row is part of a multiple-row logical ``line'' (i.e.
1631 joined with the following row), which means all characters are in use
1632 and it is continued on the next row (and possibly a continuation of the
1633 previous row(s)).</p>
1634 </dd>
1635 </li>
1636 <dt><strong><a name="item_line">$line = $term-&gt;line ($row_number)</a></strong>
1637
1638 <dd>
1639 <p>Create and return a new <code>urxvt::line</code> object that stores information
1640 about the logical line that row <code>$row_number</code> is part of. It supports the
1641 following methods:</p>
1642 </dd>
1643 <dl>
1644 <dt><strong><a name="item_t">$text = $line-&gt;t ([$new_text])</a></strong>
1645
1646 <dd>
1647 <p>Returns or replaces the full text of the line, similar to <a href="#item_row_t"><code>ROW_t</code></a></p>
1648 </dd>
1649 </li>
1650 <dt><strong><a name="item_r">$rend = $line-&gt;r ([$new_rend])</a></strong>
1651
1652 <dd>
1653 <p>Returns or replaces the full rendition array of the line, similar to <a href="#item_row_r"><code>ROW_r</code></a></p>
1654 </dd>
1655 </li>
1656 <dt><strong><a name="item_l">$length = $line-&gt;l</a></strong>
1657
1658 <dd>
1659 <p>Returns the length of the line in cells, similar to <a href="#item_row_l"><code>ROW_l</code></a>.</p>
1660 </dd>
1661 </li>
1662 <dt><strong><a name="item_beg">$rownum = $line-&gt;beg</a></strong>
1663
1664 <dt><strong><a name="item_end">$rownum = $line-&gt;end</a></strong>
1665
1666 <dd>
1667 <p>Return the row number of the first/last row of the line, respectively.</p>
1668 </dd>
1669 </li>
1670 <dt><strong><a name="item_offset_of">$offset = $line-&gt;offset_of ($row, $col)</a></strong>
1671
1672 <dd>
1673 <p>Returns the character offset of the given row|col pair within the logical
1674 line. Works for rows outside the line, too, and returns corresponding
1675 offsets outside the string.</p>
1676 </dd>
1677 </li>
1678 <dt><strong><a name="item_coord_of">($row, $col) = $line-&gt;coord_of ($offset)</a></strong>
1679
1680 <dd>
1681 <p>Translates a string offset into terminal coordinates again.</p>
1682 </dd>
1683 </li>
1684 </dl>
1685 <dt><strong><a name="item_special_encode">$text = $term-&gt;special_encode $string</a></strong>
1686
1687 <dd>
1688 <p>Converts a perl string into the special encoding used by rxvt-unicode,
1689 where one character corresponds to one screen cell. See
1690 <a href="#item_row_t"><code>$term-&gt;ROW_t</code></a> for details.</p>
1691 </dd>
1692 </li>
1693 <dt><strong><a name="item_special_decode">$string = $term-&gt;special_decode $text</a></strong>
1694
1695 <dd>
1696 <p>Converts rxvt-unicodes text representation into a perl string. See
1697 <a href="#item_row_t"><code>$term-&gt;ROW_t</code></a> for details.</p>
1698 </dd>
1699 </li>
1700 <dt><strong><a name="item_grab_button">$success = $term-&gt;grab_button ($button, $modifiermask[, $window = $term-&gt;vt])</a></strong>
1701
1702 <dt><strong><a name="item_ungrab_button">$term-&gt;ungrab_button ($button, $modifiermask[, $window = $term-&gt;vt])</a></strong>
1703
1704 <dd>
1705 <p>Register/unregister a synchronous button grab. See the XGrabButton
1706 manpage.</p>
1707 </dd>
1708 </li>
1709 <dt><strong><a name="item_grab">$success = $term-&gt;grab ($eventtime[, $sync])</a></strong>
1710
1711 <dd>
1712 <p>Calls XGrabPointer and XGrabKeyboard in asynchronous (default) or
1713 synchronous (<code>$sync</code> is true). Also remembers the grab timestamp.</p>
1714 </dd>
1715 </li>
1716 <dt><strong><a name="item_allow_events_async">$term-&gt;allow_events_async</a></strong>
1717
1718 <dd>
1719 <p>Calls XAllowEvents with AsyncBoth for the most recent grab.</p>
1720 </dd>
1721 </li>
1722 <dt><strong><a name="item_allow_events_sync">$term-&gt;allow_events_sync</a></strong>
1723
1724 <dd>
1725 <p>Calls XAllowEvents with SyncBoth for the most recent grab.</p>
1726 </dd>
1727 </li>
1728 <dt><strong><a name="item_allow_events_replay">$term-&gt;allow_events_replay</a></strong>
1729
1730 <dd>
1731 <p>Calls XAllowEvents with both ReplayPointer and ReplayKeyboard for the most
1732 recent grab.</p>
1733 </dd>
1734 </li>
1735 <dt><strong><a name="item_ungrab">$term-&gt;ungrab</a></strong>
1736
1737 <dd>
1738 <p>Calls XUngrab for the most recent grab. Is called automatically on
1739 evaluation errors, as it is better to lose the grab in the error case as
1740 the session.</p>
1741 </dd>
1742 </li>
1743 <dt><strong><a name="item_xinternatom">$atom = $term-&gt;XInternAtom ($atom_name[, $only_if_exists])</a></strong>
1744
1745 <dt><strong><a name="item_xgetatomname">$atom_name = $term-&gt;XGetAtomName ($atom)</a></strong>
1746
1747 <dt><strong><a name="item_xlistproperties">@atoms = $term-&gt;XListProperties ($window)</a></strong>
1748
1749 <dt><strong><a name="item_xgetwindowproperty">($type,$format,$octets) = $term-&gt;XGetWindowProperty ($window, $property)</a></strong>
1750
1751 <dt><strong><a name="item_xchangewindowproperty">$term-&gt;XChangeWindowProperty ($window, $property, $type, $format, $octets)</a></strong>
1752
1753 <dt><strong><a name="item_xdeleteproperty">$term-&gt;XDeleteProperty ($window, $property)</a></strong>
1754
1755 <dt><strong><a name="item_defaultrootwindow">$window = $term-&gt;DefaultRootWindow</a></strong>
1756
1757 <dt><strong><a name="item_xreparentwindow">$term-&gt;XReparentWindow ($window, $parent, [$x, $y])</a></strong>
1758
1759 <dt><strong><a name="item_xmapwindow">$term-&gt;XMapWindow ($window)</a></strong>
1760
1761 <dt><strong><a name="item_xunmapwindow">$term-&gt;XUnmapWindow ($window)</a></strong>
1762
1763 <dt><strong><a name="item_xmoveresizewindow">$term-&gt;XMoveResizeWindow ($window, $x, $y, $width, $height)</a></strong>
1764
1765 <dt><strong><a name="item_xtranslatecoordinates">($x, $y, $child_window) = $term-&gt;XTranslateCoordinates ($src, $dst, $x, $y)</a></strong>
1766
1767 <dt><strong><a name="item_xchangeinput">$term-&gt;XChangeInput ($window, $add_events[, $del_events])</a></strong>
1768
1769 <dd>
1770 <p>Various X or X-related functions. The <a href="#item__term"><code>$term</code></a> object only serves as
1771 the source of the display, otherwise those functions map more-or-less
1772 directory onto the X functions of the same name.</p>
1773 </dd>
1774 </li>
1775 </dl>
1776 <p>
1777 </p>
1778 <h2><a name="the_urxvt__popup_class">The <code>urxvt::popup</code> Class</a></h2>
1779 <dl>
1780 <dt><strong><a name="item_add_title">$popup-&gt;add_title ($title)</a></strong>
1781
1782 <dd>
1783 <p>Adds a non-clickable title to the popup.</p>
1784 </dd>
1785 </li>
1786 <dt><strong><a name="item_add_separator">$popup-&gt;add_separator ([$sepchr])</a></strong>
1787
1788 <dd>
1789 <p>Creates a separator, optionally using the character given as <code>$sepchr</code>.</p>
1790 </dd>
1791 </li>
1792 <dt><strong><a name="item_add_button">$popup-&gt;add_button ($text, $cb)</a></strong>
1793
1794 <dd>
1795 <p>Adds a clickable button to the popup. <code>$cb</code> is called whenever it is
1796 selected.</p>
1797 </dd>
1798 </li>
1799 <dt><strong><a name="item_add_toggle">$popup-&gt;add_toggle ($text, $initial_value, $cb)</a></strong>
1800
1801 <dd>
1802 <p>Adds a toggle/checkbox item to the popup. The callback gets called
1803 whenever it gets toggled, with a boolean indicating its new value as its
1804 first argument.</p>
1805 </dd>
1806 </li>
1807 <dt><strong>$popup-&gt;show</strong>
1808
1809 <dd>
1810 <p>Displays the popup (which is initially hidden).</p>
1811 </dd>
1812 </li>
1813 </dl>
1814 <p>
1815 </p>
1816 <h2><a name="the_urxvt__timer_class">The <code>urxvt::timer</code> Class</a></h2>
1817 <p>This class implements timer watchers/events. Time is represented as a
1818 fractional number of seconds since the epoch. Example:</p>
1819 <pre>
1820 $term-&gt;{overlay} = $term-&gt;overlay (-1, 0, 8, 1, urxvt::OVERLAY_RSTYLE, 0);
1821 $term-&gt;{timer} = urxvt::timer
1822 -&gt;new
1823 -&gt;interval (1)
1824 -&gt;cb (sub {
1825 $term-&gt;{overlay}-&gt;set (0, 0,
1826 sprintf &quot;%2d:%02d:%02d&quot;, (localtime urxvt::NOW)[2,1,0]);
1827 });</pre>
1828 <dl>
1829 <dt><strong><a name="item__timer">$timer = new urxvt::timer</a></strong>
1830
1831 <dd>
1832 <p>Create a new timer object in started state. It is scheduled to fire
1833 immediately.</p>
1834 </dd>
1835 </li>
1836 <dt><strong><a name="item_cb">$timer = $timer-&gt;cb (sub { my ($timer) = @_; ... })</a></strong>
1837
1838 <dd>
1839 <p>Set the callback to be called when the timer triggers.</p>
1840 </dd>
1841 </li>
1842 <dt><strong><a name="item_at">$tstamp = $timer-&gt;at</a></strong>
1843
1844 <dd>
1845 <p>Return the time this watcher will fire next.</p>
1846 </dd>
1847 </li>
1848 <dt><strong>$timer = $timer-&gt;set ($tstamp)</strong>
1849
1850 <dd>
1851 <p>Set the time the event is generated to $tstamp.</p>
1852 </dd>
1853 </li>
1854 <dt><strong><a name="item_interval">$timer = $timer-&gt;interval ($interval)</a></strong>
1855
1856 <dd>
1857 <p>Normally (and when <code>$interval</code> is <code>0</code>), the timer will automatically
1858 stop after it has fired once. If <code>$interval</code> is non-zero, then the timer
1859 is automatically rescheduled at the given intervals.</p>
1860 </dd>
1861 </li>
1862 <dt><strong><a name="item_start">$timer = $timer-&gt;start</a></strong>
1863
1864 <dd>
1865 <p>Start the timer.</p>
1866 </dd>
1867 </li>
1868 <dt><strong>$timer = $timer-&gt;start ($tstamp)</strong>
1869
1870 <dd>
1871 <p>Set the event trigger time to <code>$tstamp</code> and start the timer.</p>
1872 </dd>
1873 </li>
1874 <dt><strong><a name="item_after">$timer = $timer-&gt;after ($delay)</a></strong>
1875
1876 <dd>
1877 <p>Like <a href="#item_start"><code>start</code></a>, but sets the expiry timer to c&lt;urxvt::NOW + $delay&gt;.</p>
1878 </dd>
1879 </li>
1880 <dt><strong><a name="item_stop">$timer = $timer-&gt;stop</a></strong>
1881
1882 <dd>
1883 <p>Stop the timer.</p>
1884 </dd>
1885 </li>
1886 </dl>
1887 <p>
1888 </p>
1889 <h2><a name="the_urxvt__iow_class">The <code>urxvt::iow</code> Class</a></h2>
1890 <p>This class implements io watchers/events. Example:</p>
1891 <pre>
1892 $term-&gt;{socket} = ...
1893 $term-&gt;{iow} = urxvt::iow
1894 -&gt;new
1895 -&gt;fd (fileno $term-&gt;{socket})
1896 -&gt;events (urxvt::EVENT_READ)
1897 -&gt;start
1898 -&gt;cb (sub {
1899 my ($iow, $revents) = @_;
1900 # $revents must be 1 here, no need to check
1901 sysread $term-&gt;{socket}, my $buf, 8192
1902 or end-of-file;
1903 });</pre>
1904 <dl>
1905 <dt><strong><a name="item__iow">$iow = new urxvt::iow</a></strong>
1906
1907 <dd>
1908 <p>Create a new io watcher object in stopped state.</p>
1909 </dd>
1910 </li>
1911 <dt><strong>$iow = $iow-&gt;cb (sub { my ($iow, $reventmask) = @_; ... })</strong>
1912
1913 <dd>
1914 <p>Set the callback to be called when io events are triggered. <code>$reventmask</code>
1915 is a bitset as described in the <a href="#item_events"><code>events</code></a> method.</p>
1916 </dd>
1917 </li>
1918 <dt><strong><a name="item_fd">$iow = $iow-&gt;fd ($fd)</a></strong>
1919
1920 <dd>
1921 <p>Set the file descriptor (not handle) to watch.</p>
1922 </dd>
1923 </li>
1924 <dt><strong><a name="item_events">$iow = $iow-&gt;events ($eventmask)</a></strong>
1925
1926 <dd>
1927 <p>Set the event mask to watch. The only allowed values are
1928 <code>urxvt::EVENT_READ</code> and <code>urxvt::EVENT_WRITE</code>, which might be ORed
1929 together, or <code>urxvt::EVENT_NONE</code>.</p>
1930 </dd>
1931 </li>
1932 <dt><strong>$iow = $iow-&gt;start</strong>
1933
1934 <dd>
1935 <p>Start watching for requested events on the given handle.</p>
1936 </dd>
1937 </li>
1938 <dt><strong>$iow = $iow-&gt;stop</strong>
1939
1940 <dd>
1941 <p>Stop watching for events on the given file handle.</p>
1942 </dd>
1943 </li>
1944 </dl>
1945 <p>
1946 </p>
1947 <h2><a name="the_urxvt__iw_class">The <code>urxvt::iw</code> Class</a></h2>
1948 <p>This class implements idle watchers, that get called automatically when
1949 the process is idle. They should return as fast as possible, after doing
1950 some useful work.</p>
1951 <dl>
1952 <dt><strong><a name="item__iw">$iw = new urxvt::iw</a></strong>
1953
1954 <dd>
1955 <p>Create a new idle watcher object in stopped state.</p>
1956 </dd>
1957 </li>
1958 <dt><strong>$iw = $iw-&gt;cb (sub { my ($iw) = @_; ... })</strong>
1959
1960 <dd>
1961 <p>Set the callback to be called when the watcher triggers.</p>
1962 </dd>
1963 </li>
1964 <dt><strong>$timer = $timer-&gt;start</strong>
1965
1966 <dd>
1967 <p>Start the watcher.</p>
1968 </dd>
1969 </li>
1970 <dt><strong>$timer = $timer-&gt;stop</strong>
1971
1972 <dd>
1973 <p>Stop the watcher.</p>
1974 </dd>
1975 </li>
1976 </dl>
1977 <p>
1978 </p>
1979 <h2><a name="the_urxvt__pw_class">The <code>urxvt::pw</code> Class</a></h2>
1980 <p>This class implements process watchers. They create an event whenever a
1981 process exits, after which they stop automatically.</p>
1982 <pre>
1983 my $pid = fork;
1984 ...
1985 $term-&gt;{pw} = urxvt::pw
1986 -&gt;new
1987 -&gt;start ($pid)
1988 -&gt;cb (sub {
1989 my ($pw, $exit_status) = @_;
1990 ...
1991 });</pre>
1992 <dl>
1993 <dt><strong><a name="item__pw">$pw = new urxvt::pw</a></strong>
1994
1995 <dd>
1996 <p>Create a new process watcher in stopped state.</p>
1997 </dd>
1998 </li>
1999 <dt><strong>$pw = $pw-&gt;cb (sub { my ($pw, $exit_status) = @_; ... })</strong>
2000
2001 <dd>
2002 <p>Set the callback to be called when the timer triggers.</p>
2003 </dd>
2004 </li>
2005 <dt><strong>$pw = $timer-&gt;start ($pid)</strong>
2006
2007 <dd>
2008 <p>Tells the watcher to start watching for process <code>$pid</code>.</p>
2009 </dd>
2010 </li>
2011 <dt><strong>$pw = $pw-&gt;stop</strong>
2012
2013 <dd>
2014 <p>Stop the watcher.</p>
2015 </dd>
2016 </li>
2017 </dl>
2018 <p>
2019 </p>
2020 <hr />
2021 <h1><a name="environment">ENVIRONMENT</a></h1>
2022 <p>
2023 </p>
2024 <h2><a name="urxvt_perl_verbosity">URXVT_PERL_VERBOSITY</a></h2>
2025 <p>This variable controls the verbosity level of the perl extension. Higher
2026 numbers indicate more verbose output.</p>
2027 <dl>
2028 <dt><strong><a name="item__3d_3d_0__2d_fatal_messages">== 0 - fatal messages</a></strong>
2029
2030 <dt><strong><a name="item__3e_3d_3__2d_script_loading_and_management">&gt;= 3 - script loading and management</a></strong>
2031
2032 <dt><strong><a name="item__3e_3d10__2d_all_called_hooks">&gt;=10 - all called hooks</a></strong>
2033
2034 <dt><strong><a name="item__3e_3d11__2d_hook_return_values">&gt;=11 - hook return values</a></strong>
2035
2036 </dl>
2037 <p>
2038 </p>
2039 <hr />
2040 <h1><a name="author">AUTHOR</a></h1>
2041 <pre>
2042 Marc Lehmann &lt;pcg@goof.com&gt;
2043 <a href="http://software.schmorp.de/pkg/rxvt-unicode">http://software.schmorp.de/pkg/rxvt-unicode</a></pre>
2044
2045 </body>
2046
2047 </html>