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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 </ul>
34
35 <li><a href="#environment">ENVIRONMENT</a></li>
36 <ul>
37
38 <li><a href="#urxvt_perl_verbosity">URXVT_PERL_VERBOSITY</a></li>
39 </ul>
40
41 <li><a href="#author">AUTHOR</a></li>
42 </ul>
43 <!-- INDEX END -->
44
45 <hr />
46 <p>
47 </p>
48 <hr />
49 <h1><a name="name">NAME</a></h1>
50 <p>rxvtperl - rxvt-unicode's embedded perl interpreter</p>
51 <p>
52 </p>
53 <hr />
54 <h1><a name="synopsis">SYNOPSIS</a></h1>
55 <pre>
56 # create a file grab_test in $HOME:</pre>
57 <pre>
58 sub on_sel_grab {
59 warn &quot;you selected &quot;, $_[0]-&gt;selection;
60 ()
61 }</pre>
62 <pre>
63 # start a rxvt using it:</pre>
64 <pre>
65 rxvt --perl-lib $HOME -pe grab_test</pre>
66 <p>
67 </p>
68 <hr />
69 <h1><a name="description">DESCRIPTION</a></h1>
70 <p>Everytime a terminal object gets created, extension scripts specified via
71 the <code>perl</code> resource are loaded and associated with it.</p>
72 <p>Scripts are compiled in a 'use strict' and 'use utf8' environment, and
73 thus must be encoded as UTF-8.</p>
74 <p>Each script will only ever be loaded once, even in rxvtd, where
75 scripts will be shared (but not enabled) for all terminals.</p>
76 <p>
77 </p>
78 <hr />
79 <h1><a name="prepackaged_extensions">PREPACKAGED EXTENSIONS</a></h1>
80 <p>This section describes the extensions delivered with this release. You can
81 find them in <em>/opt/rxvt/lib/urxvt/perl/</em>.</p>
82 <p>You can activate them like this:</p>
83 <pre>
84 rxvt -pe &lt;extensionname&gt;</pre>
85 <dl>
86 <dt><strong><a name="item_selection">selection (enabled by default)</a></strong><br />
87 </dt>
88 <dd>
89 (More) intelligent selection. This extension tries to be more intelligent
90 when the user extends selections (double-click and further clicks). Right
91 now, it tries to select words, urls and complete shell-quoted
92 arguments, which is very convenient, too, if your <em>ls</em> supports
93 <code>--quoting-style=shell</code>.
94 </dd>
95 <dd>
96 <p>A double-click usually selects the word under the cursor, further clicks
97 will enlarge the selection.</p>
98 </dd>
99 <dd>
100 <p>The selection works by trying to match a number of regexes and displaying
101 them in increasing order of length. You can add your own regexes by
102 specifying resources of the form:</p>
103 </dd>
104 <dd>
105 <pre>
106 URxvt.selection.pattern-0: perl-regex
107 URxvt.selection.pattern-1: perl-regex
108 ...</pre>
109 </dd>
110 <dd>
111 <p>The index number (0, 1...) must not have any holes, and each regex must
112 contain at least one pair of capturing parentheses, which will be used for
113 the match. For example, the followign adds a regex that matches everything
114 between two vertical bars:</p>
115 </dd>
116 <dd>
117 <pre>
118 URxvt.selection.pattern-0: \\|([^|]+)\\|</pre>
119 </dd>
120 <dd>
121 <p>You can look at the source of the selection extension to see more
122 interesting uses, such as parsing a line from beginning to end.</p>
123 </dd>
124 <dd>
125 <p>This extension also offers following bindable keyboard commands:</p>
126 </dd>
127 <dl>
128 <dt><strong><a name="item_rot13">rot13</a></strong><br />
129 </dt>
130 <dd>
131 Rot-13 the selection when activated. Used via keyboard trigger:
132 </dd>
133 <dd>
134 <pre>
135 URxvt.keysym.C-M-r: perl:selection:rot13</pre>
136 </dd>
137 <p></p></dl>
138 <dt><strong><a name="item_popup">option-popup (enabled by default)</a></strong><br />
139 </dt>
140 <dd>
141 Binds a popup menu to Ctrl-Button2 that lets you toggle (some) options at
142 runtime.
143 </dd>
144 <p></p>
145 <dt><strong>selection-popup (enabled by default)</strong><br />
146 </dt>
147 <dd>
148 Binds a popup menu to Ctrl-Button3 that lets you convert the selection
149 text into various other formats/action (such as uri unescaping, perl
150 evalution, web-browser starting etc.), depending on content.
151 </dd>
152 <dd>
153 <p>Other extensions can extend this popup menu by pushing a code reference
154 onto <code>@{ $term-</code>{selection_popup_hook} }&gt;, that is called whenever the
155 popup is displayed.</p>
156 </dd>
157 <dd>
158 <p>It's sole argument is the popup menu, which can be modified. The selection
159 is in <code>$_</code>, which can be used to decide wether to add something or not.
160 It should either return nothing or a string and a code reference. The
161 string will be used as button text and the code reference will be called
162 when the button gets activated and should transform <code>$_</code>.</p>
163 </dd>
164 <dd>
165 <p>The following will add an entry <code>a to b</code> that transforms all <code>a</code>s in
166 the selection to <code>b</code>s, but only if the selection currently contains any
167 <code>a</code>s:</p>
168 </dd>
169 <dd>
170 <pre>
171 push @{ $self-&gt;{term}{selection_popup_hook} }, sub {
172 /a/ ? (&quot;a to be&quot; =&gt; sub { s/a/b/g }
173 : ()
174 };</pre>
175 </dd>
176 <p></p>
177 <dt><strong><a name="item_searchable_2dscrollback_3chotkey_3e__28enabled_by_">searchable-scrollback&lt;hotkey&gt; (enabled by default)</a></strong><br />
178 </dt>
179 <dd>
180 Adds regex search functionality to the scrollback buffer, triggered
181 by a hotkey (default: <code>M-s</code>). While in search mode, normal terminal
182 input/output is suspended and a regex is displayed at the bottom of the
183 screen.
184 </dd>
185 <dd>
186 <p>Inputting characters appends them to the regex and continues incremental
187 search. <code>BackSpace</code> removes a character from the regex, <code>Up</code> and <code>Down</code>
188 search upwards/downwards in the scrollback buffer, <code>End</code> jumps to the
189 bottom. <code>Escape</code> leaves search mode and returns to the point where search
190 was started, while <code>Enter</code> or <code>Return</code> stay at the current position and
191 additionally stores the first match in the current line into the primary
192 selection.</p>
193 </dd>
194 <p></p>
195 <dt><strong><a name="item_selection_2dautotransform">selection-autotransform</a></strong><br />
196 </dt>
197 <dd>
198 This selection allows you to do automatic transforms on a selection
199 whenever a selection is made.
200 </dd>
201 <dd>
202 <p>It works by specifying perl snippets (most useful is a single <code>s///</code>
203 operator) that modify <code>$_</code> as resources:</p>
204 </dd>
205 <dd>
206 <pre>
207 URxvt.selection-autotransform.0: transform
208 URxvt.selection-autotransform.1: transform
209 ...</pre>
210 </dd>
211 <dd>
212 <p>For example, the following will transform selections of the form
213 <code>filename:number</code>, often seen in compiler messages, into <code>vi +$filename
214 $word</code>:</p>
215 </dd>
216 <dd>
217 <pre>
218 URxvt.selection-autotransform.0: s/^([^:[:space:]]+):(\\d+):?$/vi +$2 \\Q$1\\E\\x0d/</pre>
219 </dd>
220 <dd>
221 <p>And this example matches the same,but replaces it with vi-commands you can
222 paste directly into your (vi :) editor:</p>
223 </dd>
224 <dd>
225 <pre>
226 URxvt.selection-autotransform.0: s/^([^:[:space:]]+(\\d+):?$/:e \\Q$1\\E\\x0d:$2\\x0d/</pre>
227 </dd>
228 <dd>
229 <p>Of course, this can be modified to suit your needs and your editor :)</p>
230 </dd>
231 <dd>
232 <p>To expand the example above to typical perl error messages (``XXX at
233 FILENAME line YYY.''), you need a slightly more elaborate solution:</p>
234 </dd>
235 <dd>
236 <pre>
237 URxvt.selection.pattern-0: ( at .*? line \\d+[,.])
238 URxvt.selection-autotransform.0: s/^ at (.*?) line (\\d+)[,.]$/:e \\Q$1\E\\x0d:$2\\x0d/</pre>
239 </dd>
240 <dd>
241 <p>The first line tells the selection code to treat the unchanging part of
242 every error message as a selection pattern, and the second line transforms
243 the message into vi commands to load the file.</p>
244 </dd>
245 <p></p>
246 <dt><strong><a name="item_mark_2durls">mark-urls</a></strong><br />
247 </dt>
248 <dd>
249 Uses per-line display filtering (<code>on_line_update</code>) to underline urls and
250 make them clickable. When middle-clicked, the program specified in the
251 resource <code>urlLauncher</code> (default <code>x-www-browser</code>) will be started with
252 the URL as first argument.
253 </dd>
254 <p></p>
255 <dt><strong><a name="item_automove_2dbackground">automove-background</a></strong><br />
256 </dt>
257 <dd>
258 This is basically a one-line extension that dynamically changes the background pixmap offset
259 to the window position, in effect creating the same effect as pseudo transparency with
260 a custom pixmap. No scaling is supported in this mode. Exmaple:
261 </dd>
262 <dd>
263 <pre>
264 rxvt -pixmap background.xpm -pe automove-background</pre>
265 </dd>
266 <p></p>
267 <dt><strong><a name="item_block_2dgraphics_2dto_2dascii">block-graphics-to-ascii</a></strong><br />
268 </dt>
269 <dd>
270 A not very useful example of filtering all text output to the terminal,
271 by replacing all line-drawing characters (U+2500 .. U+259F) by a
272 similar-looking ascii character.
273 </dd>
274 <p></p>
275 <dt><strong><a name="item_digital_2dclock">digital-clock</a></strong><br />
276 </dt>
277 <dd>
278 Displays a digital clock using the built-in overlay.
279 </dd>
280 <p></p>
281 <dt><strong><a name="item_example_2drefresh_2dhooks">example-refresh-hooks</a></strong><br />
282 </dt>
283 <dd>
284 Displays a very simple digital clock in the upper right corner of the
285 window. Illustrates overwriting the refresh callbacks to create your own
286 overlays or changes.
287 </dd>
288 <p></p>
289 <dt><strong><a name="item_selection_2dpastebin">selection-pastebin</a></strong><br />
290 </dt>
291 <dd>
292 This is a little rarely useful extension that Uploads the selection as
293 textfile to a remote site (or does other things). (The implementation is
294 not currently secure for use in a multiuser environment as it writes to
295 <em>/tmp</em> directly.).
296 </dd>
297 <dd>
298 <p>It listens to the <code>selection-pastebin:remote-pastebin</code> keyboard command,
299 i.e.</p>
300 </dd>
301 <dd>
302 <pre>
303 URxvt.keysym.C-M-e: perl:selection-pastebin:remote-pastebin</pre>
304 </dd>
305 <dd>
306 <p>Pressing this combination runs a command with <code>%</code> replaced by the name of
307 the textfile. This command can be set via a resource:</p>
308 </dd>
309 <dd>
310 <pre>
311 URxvt.selection-pastebin.cmd: rsync -apP % ruth:/var/www/www.ta-sa.org/files/txt/.</pre>
312 </dd>
313 <dd>
314 <p>And the default is likely not useful to anybody but the few people around
315 here :)</p>
316 </dd>
317 <dd>
318 <p>The name of the textfile is the hex encoded md5 sum of the selection, so
319 the same content should lead to the same filename.</p>
320 </dd>
321 <dd>
322 <p>After a successful upload the selection will be replaced by the text given
323 in the <code>selection-pastebin-url</code> resource (again, the % is the placeholder
324 for the filename):</p>
325 </dd>
326 <dd>
327 <pre>
328 URxvt.selection-pastebin.url: <a href="http://www.ta-sa.org/files/txt/%">http://www.ta-sa.org/files/txt/%</a></pre>
329 </dd>
330 <p></p></dl>
331 <p>
332 </p>
333 <hr />
334 <h1><a name="api_documentation">API DOCUMENTATION</a></h1>
335 <p>
336 </p>
337 <h2><a name="general_api_considerations">General API Considerations</a></h2>
338 <p>All objects (such as terminals, time watchers etc.) are typical
339 reference-to-hash objects. The hash can be used to store anything you
340 like. All members starting with an underscore (such as <code>_ptr</code> or
341 <code>_hook</code>) are reserved for internal uses and <strong>MUST NOT</strong> be accessed or
342 modified).</p>
343 <p>When objects are destroyed on the C++ side, the perl object hashes are
344 emptied, so its best to store related objects such as time watchers and
345 the like inside the terminal object so they get destroyed as soon as the
346 terminal is destroyed.</p>
347 <p>Argument names also often indicate the type of a parameter. Here are some
348 hints on what they mean:</p>
349 <dl>
350 <dt><strong><a name="item__24text">$text</a></strong><br />
351 </dt>
352 <dd>
353 Rxvt-unicodes special way of encoding text, where one ``unicode'' character
354 always represents one screen cell. See <a href="#item_row_t">ROW_t</a> for a discussion of this format.
355 </dd>
356 <p></p>
357 <dt><strong><a name="item__24string">$string</a></strong><br />
358 </dt>
359 <dd>
360 A perl text string, with an emphasis on <em>text</em>. It can store all unicode
361 characters and is to be distinguished with text encoded in a specific
362 encoding (often locale-specific) and binary data.
363 </dd>
364 <p></p>
365 <dt><strong><a name="item__24octets">$octets</a></strong><br />
366 </dt>
367 <dd>
368 Either binary data or - more common - a text string encoded in a
369 locale-specific way.
370 </dd>
371 <p></p></dl>
372 <p>
373 </p>
374 <h2><a name="extension_objects">Extension Objects</a></h2>
375 <p>Very perl extension is a perl class. A separate perl object is created
376 for each terminal and each extension and passed as the first parameter to
377 hooks. So extensions can use their <code>$self</code> object without having to think
378 about other extensions, with the exception of methods and members that
379 begin with an underscore character <code>_</code>: these are reserved for internal
380 use.</p>
381 <p>Although it isn't a <code>urxvt::term</code> object, you can call all methods of the
382 <code>urxvt::term</code> class on this object.</p>
383 <p>It has the following methods and data members:</p>
384 <dl>
385 <dt><strong><a name="item__24urxvt_term__3d__24self_2d_3e_7bterm_7d">$urxvt_term = $self-&gt;{term}</a></strong><br />
386 </dt>
387 <dd>
388 Returns the <code>urxvt::term</code> object associated with this instance of the
389 extension. This member <em>must not</em> be changed in any way.
390 </dd>
391 <p></p>
392 <dt><strong><a name="item_enable">$self-&gt;enable ($hook_name =&gt; $cb, [$hook_name =&gt; $cb..])</a></strong><br />
393 </dt>
394 <dd>
395 Dynamically enable the given hooks (named without the <code>on_</code> prefix) for
396 this extension, replacing any previous hook. This is useful when you want
397 to overwrite time-critical hooks only temporarily.
398 </dd>
399 <p></p>
400 <dt><strong><a name="item_disable">$self-&gt;disable ($hook_name[, $hook_name..])</a></strong><br />
401 </dt>
402 <dd>
403 Dynamically disable the given hooks.
404 </dd>
405 <p></p></dl>
406 <p>
407 </p>
408 <h2><a name="hooks">Hooks</a></h2>
409 <p>The following subroutines can be declared in extension files, and will be
410 called whenever the relevant event happens.</p>
411 <p>The first argument passed to them is an extension oject as described in
412 the in the <code>Extension Objects</code> section.</p>
413 <p><strong>All</strong> of these hooks must return a boolean value. If it is true, then the
414 event counts as being <em>consumed</em>, and the invocation of other hooks is
415 skipped, and the relevant action might not be carried out by the C++ code.</p>
416 <p><em>When in doubt, return a false value (preferably <code>()</code>). </em>&gt;</p>
417 <dl>
418 <dt><strong><a name="item_on_init__24term">on_init $term</a></strong><br />
419 </dt>
420 <dd>
421 Called after a new terminal object has been initialized, but before
422 windows are created or the command gets run. Most methods are unsafe to
423 call or deliver senseless data, as terminal size and other characteristics
424 have not yet been determined. You can safely query and change resources,
425 though.
426 </dd>
427 <p></p>
428 <dt><strong><a name="item_on_reset__24term">on_reset $term</a></strong><br />
429 </dt>
430 <dd>
431 Called after the screen is ``reset'' for any reason, such as resizing or
432 control sequences. Here is where you can react on changes to size-related
433 variables.
434 </dd>
435 <p></p>
436 <dt><strong><a name="item_on_start__24term">on_start $term</a></strong><br />
437 </dt>
438 <dd>
439 Called at the very end of initialisation of a new terminal, just before
440 returning to the mainloop.
441 </dd>
442 <p></p>
443 <dt><strong><a name="item_on_child_start__24term_2c__24pid">on_child_start $term, $pid</a></strong><br />
444 </dt>
445 <dd>
446 Called just after the child process has been <code>fork</code>ed.
447 </dd>
448 <p></p>
449 <dt><strong><a name="item_on_child_exit__24term_2c__24status">on_child_exit $term, $status</a></strong><br />
450 </dt>
451 <dd>
452 Called just after the child process has exited. <code>$status</code> is the status
453 from <code>waitpid</code>.
454 </dd>
455 <p></p>
456 <dt><strong><a name="item_on_sel_make__24term_2c__24eventtime">on_sel_make $term, $eventtime</a></strong><br />
457 </dt>
458 <dd>
459 Called whenever a selection has been made by the user, but before the
460 selection text is copied, so changes to the beginning, end or type of the
461 selection will be honored.
462 </dd>
463 <dd>
464 <p>Returning a true value aborts selection making by urxvt, in which case you
465 have to make a selection yourself by calling <a href="#item_selection_grab"><code>$term-&gt;selection_grab</code></a>.</p>
466 </dd>
467 <p></p>
468 <dt><strong><a name="item_on_sel_grab__24term_2c__24eventtime">on_sel_grab $term, $eventtime</a></strong><br />
469 </dt>
470 <dd>
471 Called whenever a selection has been copied, but before the selection is
472 requested from the server. The selection text can be queried and changed
473 by calling <a href="#item_selection"><code>$term-&gt;selection</code></a>.
474 </dd>
475 <dd>
476 <p>Returning a true value aborts selection grabbing. It will still be hilighted.</p>
477 </dd>
478 <p></p>
479 <dt><strong><a name="item_on_sel_extend__24term">on_sel_extend $term</a></strong><br />
480 </dt>
481 <dd>
482 Called whenever the user tries to extend the selection (e.g. with a double
483 click) and is either supposed to return false (normal operation), or
484 should extend the selection itelf and return true to suppress the built-in
485 processing. This can happen multiple times, as long as the callback
486 returns true, it will be called on every further click by the user and is
487 supposed to enlarge the selection more and more, if possible.
488 </dd>
489 <dd>
490 <p>See the <em>selection</em> example extension.</p>
491 </dd>
492 <p></p>
493 <dt><strong><a name="item_on_view_change__24term_2c__24offset">on_view_change $term, $offset</a></strong><br />
494 </dt>
495 <dd>
496 Called whenever the view offset changes, i..e the user or program
497 scrolls. Offset <code>0</code> means display the normal terminal, positive values
498 show this many lines of scrollback.
499 </dd>
500 <p></p>
501 <dt><strong><a name="item_on_scroll_back__24term_2c__24lines_2c__24saved">on_scroll_back $term, $lines, $saved</a></strong><br />
502 </dt>
503 <dd>
504 Called whenever lines scroll out of the terminal area into the scrollback
505 buffer. <code>$lines</code> is the number of lines scrolled out and may be larger
506 than the scroll back buffer or the terminal.
507 </dd>
508 <dd>
509 <p>It is called before lines are scrolled out (so rows 0 .. min ($lines - 1,
510 $nrow - 1) represent the lines to be scrolled out). <code>$saved</code> is the total
511 number of lines that will be in the scrollback buffer.</p>
512 </dd>
513 <p></p>
514 <dt><strong><a name="item_on_osc_seq__24term_2c__24string">on_osc_seq $term, $string</a></strong><br />
515 </dt>
516 <dd>
517 Called whenever the <strong>ESC ] 777 ; string ST</strong> command sequence (OSC =
518 operating system command) is processed. Cursor position and other state
519 information is up-to-date when this happens. For interoperability, the
520 string should start with the extension name and a colon, to distinguish
521 it from commands for other extensions, and this might be enforced in the
522 future.
523 </dd>
524 <dd>
525 <p>Be careful not ever to trust (in a security sense) the data you receive,
526 as its source can not easily be controleld (e-mail content, messages from
527 other users on the same system etc.).</p>
528 </dd>
529 <p></p>
530 <dt><strong><a name="item_on_add_lines__24term_2c__24string">on_add_lines $term, $string</a></strong><br />
531 </dt>
532 <dd>
533 Called whenever text is about to be output, with the text as argument. You
534 can filter/change and output the text yourself by returning a true value
535 and calling <a href="#item_scr_add_lines"><code>$term-&gt;scr_add_lines</code></a> yourself. Please note that this
536 might be very slow, however, as your hook is called for <strong>all</strong> text being
537 output.
538 </dd>
539 <p></p>
540 <dt><strong><a name="item_on_tt_write__24term_2c__24octets">on_tt_write $term, $octets</a></strong><br />
541 </dt>
542 <dd>
543 Called whenever some data is written to the tty/pty and can be used to
544 suppress or filter tty input.
545 </dd>
546 <p></p>
547 <dt><strong><a name="item_on_line_update__24term_2c__24row">on_line_update $term, $row</a></strong><br />
548 </dt>
549 <dd>
550 Called whenever a line was updated or changed. Can be used to filter
551 screen output (e.g. underline urls or other useless stuff). Only lines
552 that are being shown will be filtered, and, due to performance reasons,
553 not always immediately.
554 </dd>
555 <dd>
556 <p>The row number is always the topmost row of the line if the line spans
557 multiple rows.</p>
558 </dd>
559 <dd>
560 <p>Please note that, if you change the line, then the hook might get called
561 later with the already-modified line (e.g. if unrelated parts change), so
562 you cannot just toggle rendition bits, but only set them.</p>
563 </dd>
564 <p></p>
565 <dt><strong><a name="item_on_refresh_begin__24term">on_refresh_begin $term</a></strong><br />
566 </dt>
567 <dd>
568 Called just before the screen gets redrawn. Can be used for overlay
569 or similar effects by modify terminal contents in refresh_begin, and
570 restoring them in refresh_end. The built-in overlay and selection display
571 code is run after this hook, and takes precedence.
572 </dd>
573 <p></p>
574 <dt><strong><a name="item_on_refresh_end__24term">on_refresh_end $term</a></strong><br />
575 </dt>
576 <dd>
577 Called just after the screen gets redrawn. See <code>on_refresh_begin</code>.
578 </dd>
579 <p></p>
580 <dt><strong><a name="item_on_keyboard_command__24term_2c__24string">on_keyboard_command $term, $string</a></strong><br />
581 </dt>
582 <dd>
583 Called whenever the user presses a key combination that has a
584 <code>perl:string</code> action bound to it (see description of the <strong>keysym</strong>
585 resource in the <code>rxvt(1)</code> manpage).
586 </dd>
587 <p></p>
588 <dt><strong><a name="item_on_x_event__24term_2c__24event">on_x_event $term, $event</a></strong><br />
589 </dt>
590 <dd>
591 Called on every X event received on the vt window (and possibly other
592 windows). Should only be used as a last resort. Most event structure
593 members are not passed.
594 </dd>
595 <p></p>
596 <dt><strong><a name="item_on_focus_in__24term">on_focus_in $term</a></strong><br />
597 </dt>
598 <dd>
599 Called whenever the window gets the keyboard focus, before rxvt-unicode
600 does focus in processing.
601 </dd>
602 <p></p>
603 <dt><strong><a name="item_on_focus_out__24term">on_focus_out $term</a></strong><br />
604 </dt>
605 <dd>
606 Called wheneever the window loses keyboard focus, before rxvt-unicode does
607 focus out processing.
608 </dd>
609 <p></p>
610 <dt><strong><a name="item_on_configure_notify__24term_2c__24event">on_configure_notify $term, $event</a></strong><br />
611 </dt>
612 <dt><strong><a name="item_on_key_press__24term_2c__24event_2c__24keysym_2c__">on_key_press $term, $event, $keysym, $octets</a></strong><br />
613 </dt>
614 <dt><strong><a name="item_on_key_release__24term_2c__24event_2c__24keysym">on_key_release $term, $event, $keysym</a></strong><br />
615 </dt>
616 <dt><strong><a name="item_on_button_press__24term_2c__24event">on_button_press $term, $event</a></strong><br />
617 </dt>
618 <dt><strong><a name="item_on_button_release__24term_2c__24event">on_button_release $term, $event</a></strong><br />
619 </dt>
620 <dt><strong><a name="item_on_motion_notify__24term_2c__24event">on_motion_notify $term, $event</a></strong><br />
621 </dt>
622 <dt><strong><a name="item_on_map_notify__24term_2c__24event">on_map_notify $term, $event</a></strong><br />
623 </dt>
624 <dt><strong><a name="item_on_unmap_notify__24term_2c__24event">on_unmap_notify $term, $event</a></strong><br />
625 </dt>
626 <dd>
627 Called whenever the corresponding X event is received for the terminal If
628 the hook returns true, then the even will be ignored by rxvt-unicode.
629 </dd>
630 <dd>
631 <p>The event is a hash with most values as named by Xlib (see the XEvent
632 manpage), with the additional members <code>row</code> and <code>col</code>, which are the row
633 and column under the mouse cursor.</p>
634 </dd>
635 <dd>
636 <p><code>on_key_press</code> additionally receives the string rxvt-unicode would
637 output, if any, in locale-specific encoding.</p>
638 </dd>
639 <dd>
640 <p>subwindow.</p>
641 </dd>
642 <p></p></dl>
643 <p>
644 </p>
645 <h2><a name="variables_in_the_urxvt_package">Variables in the <code>urxvt</code> Package</a></h2>
646 <dl>
647 <dt><strong><a name="item__24urxvt_3a_3alibdir">$urxvt::LIBDIR</a></strong><br />
648 </dt>
649 <dd>
650 The rxvt-unicode library directory, where, among other things, the perl
651 modules and scripts are stored.
652 </dd>
653 <p></p>
654 <dt><strong><a name="item__24urxvt_3a_3aresclass_2c__24urxvt_3a_3aresclass">$urxvt::RESCLASS, $urxvt::RESCLASS</a></strong><br />
655 </dt>
656 <dd>
657 The resource class and name rxvt-unicode uses to look up X resources.
658 </dd>
659 <p></p>
660 <dt><strong><a name="item__24urxvt_3a_3arxvtname">$urxvt::RXVTNAME</a></strong><br />
661 </dt>
662 <dd>
663 The basename of the installed binaries, usually <code>urxvt</code>.
664 </dd>
665 <p></p>
666 <dt><strong><a name="item__24urxvt_3a_3aterm">$urxvt::TERM</a></strong><br />
667 </dt>
668 <dd>
669 The current terminal. This variable stores the current <code>urxvt::term</code>
670 object, whenever a callback/hook is executing.
671 </dd>
672 <p></p></dl>
673 <p>
674 </p>
675 <h2><a name="functions_in_the_urxvt_package">Functions in the <code>urxvt</code> Package</a></h2>
676 <dl>
677 <dt><strong><a name="item_urxvt_3a_3afatal__24errormessage">urxvt::fatal $errormessage</a></strong><br />
678 </dt>
679 <dd>
680 Fatally aborts execution with the given error message. Avoid at all
681 costs! The only time this is acceptable is when the terminal process
682 starts up.
683 </dd>
684 <p></p>
685 <dt><strong><a name="item_urxvt_3a_3awarn__24string">urxvt::warn $string</a></strong><br />
686 </dt>
687 <dd>
688 Calls <code>rxvt_warn</code> with the given string which should not include a
689 newline. The module also overwrites the <code>warn</code> builtin with a function
690 that calls this function.
691 </dd>
692 <dd>
693 <p>Using this function has the advantage that its output ends up in the
694 correct place, e.g. on stderr of the connecting urxvtc client.</p>
695 </dd>
696 <dd>
697 <p>Messages have a size limit of 1023 bytes currently.</p>
698 </dd>
699 <p></p>
700 <dt><strong><a name="item__24time__3d_urxvt_3a_3anow">$time = urxvt::NOW</a></strong><br />
701 </dt>
702 <dd>
703 Returns the ``current time'' (as per the event loop).
704 </dd>
705 <p></p>
706 <dt><strong><a name="item_urxvt_3a_3acurrenttime">urxvt::CurrentTime</a></strong><br />
707 </dt>
708 <dt><strong><a name="item_urxvt_3a_3ashiftmask_2c_lockmask_2c_controlmask_2c">urxvt::ShiftMask, LockMask, ControlMask, Mod1Mask, Mod2Mask,
709 Mod3Mask, Mod4Mask, Mod5Mask, Button1Mask, Button2Mask, Button3Mask,
710 Button4Mask, Button5Mask, AnyModifier</a></strong><br />
711 </dt>
712 <dt><strong><a name="item_urxvt_3a_3anoeventmask_2c_keypressmask_2c_keyrelea">urxvt::NoEventMask, KeyPressMask, KeyReleaseMask,
713 ButtonPressMask, ButtonReleaseMask, EnterWindowMask, LeaveWindowMask,
714 PointerMotionMask, PointerMotionHintMask, Button1MotionMask, Button2MotionMask,
715 Button3MotionMask, Button4MotionMask, Button5MotionMask, ButtonMotionMask,
716 KeymapStateMask, ExposureMask, VisibilityChangeMask, StructureNotifyMask,
717 ResizeRedirectMask, SubstructureNotifyMask, SubstructureRedirectMask,
718 FocusChangeMask, PropertyChangeMask, ColormapChangeMask, OwnerGrabButtonMask</a></strong><br />
719 </dt>
720 <dt><strong><a name="item_urxvt_3a_3akeypress_2c_keyrelease_2c_buttonpress_2">urxvt::KeyPress, KeyRelease, ButtonPress, ButtonRelease, MotionNotify,
721 EnterNotify, LeaveNotify, FocusIn, FocusOut, KeymapNotify, Expose,
722 GraphicsExpose, NoExpose, VisibilityNotify, CreateNotify, DestroyNotify,
723 UnmapNotify, MapNotify, MapRequest, ReparentNotify, ConfigureNotify,
724 ConfigureRequest, GravityNotify, ResizeRequest, CirculateNotify,
725 CirculateRequest, PropertyNotify, SelectionClear, SelectionRequest,
726 SelectionNotify, ColormapNotify, ClientMessage, MappingNotify</a></strong><br />
727 </dt>
728 <dd>
729 Various constants for use in X calls and event processing.
730 </dd>
731 <p></p></dl>
732 <p>
733 </p>
734 <h2><a name="rendition">RENDITION</a></h2>
735 <p>Rendition bitsets contain information about colour, font, font styles and
736 similar information for each screen cell.</p>
737 <p>The following ``macros'' deal with changes in rendition sets. You should
738 never just create a bitset, you should always modify an existing one,
739 as they contain important information required for correct operation of
740 rxvt-unicode.</p>
741 <dl>
742 <dt><strong><a name="item__24rend__3d_urxvt_3a_3adefault_rstyle">$rend = urxvt::DEFAULT_RSTYLE</a></strong><br />
743 </dt>
744 <dd>
745 Returns the default rendition, as used when the terminal is starting up or
746 being reset. Useful as a base to start when creating renditions.
747 </dd>
748 <p></p>
749 <dt><strong><a name="item__24rend__3d_urxvt_3a_3aoverlay_rstyle">$rend = urxvt::OVERLAY_RSTYLE</a></strong><br />
750 </dt>
751 <dd>
752 Return the rendition mask used for overlays by default.
753 </dd>
754 <p></p>
755 <dt><strong><a name="item__24rendbit__3d_urxvt_3a_3ars_bold_2c_rs_italic_2c_">$rendbit = urxvt::RS_Bold, RS_Italic, RS_Blink, RS_RVid, RS_Uline</a></strong><br />
756 </dt>
757 <dd>
758 Return the bit that enabled bold, italic, blink, reverse-video and
759 underline, respectively. To enable such a style, just logically OR it into
760 the bitset.
761 </dd>
762 <p></p>
763 <dt><strong><a name="item__24foreground__3d_urxvt_3a_3aget_basefg__24rend">$foreground = urxvt::GET_BASEFG $rend</a></strong><br />
764 </dt>
765 <dt><strong><a name="item__24background__3d_urxvt_3a_3aget_basebg__24rend">$background = urxvt::GET_BASEBG $rend</a></strong><br />
766 </dt>
767 <dd>
768 Return the foreground/background colour index, respectively.
769 </dd>
770 <p></p>
771 <dt><strong><a name="item__24rend__3d_urxvt_3a_3aset_fgcolor__24rend_2c__24n">$rend = urxvt::SET_FGCOLOR $rend, $new_colour</a></strong><br />
772 </dt>
773 <dt><strong><a name="item__24rend__3d_urxvt_3a_3aset_bgcolor__24rend_2c__24n">$rend = urxvt::SET_BGCOLOR $rend, $new_colour</a></strong><br />
774 </dt>
775 <dd>
776 Replace the foreground/background colour in the rendition mask with the
777 specified one.
778 </dd>
779 <p></p>
780 <dt><strong><a name="item__24value__3d_urxvt_3a_3aget_custom__24rend">$value = urxvt::GET_CUSTOM $rend</a></strong><br />
781 </dt>
782 <dd>
783 Return the ``custom'' value: Every rendition has 5 bits for use by
784 extensions. They can be set and changed as you like and are initially
785 zero.
786 </dd>
787 <p></p>
788 <dt><strong><a name="item__24rend__3d_urxvt_3a_3aset_custom__24rend_2c__24ne">$rend = urxvt::SET_CUSTOM $rend, $new_value</a></strong><br />
789 </dt>
790 <dd>
791 Change the custom value.
792 </dd>
793 <p></p></dl>
794 <p>
795 </p>
796 <h2><a name="the_urxvt__anyevent_class">The <code>urxvt::anyevent</code> Class</a></h2>
797 <p>The sole purpose of this class is to deliver an interface to the
798 <code>AnyEvent</code> module - any module using it will work inside urxvt without
799 further programming. The only exception is that you cannot wait on
800 condition variables, but non-blocking condvar use is ok. What this means
801 is that you cannot use blocking APIs, but the non-blocking variant should
802 work.</p>
803 <p>
804 </p>
805 <h2><a name="the_urxvt__term_class">The <code>urxvt::term</code> Class</a></h2>
806 <dl>
807 <dt><strong><a name="item__24term__3d_new_urxvt_3a_3aterm__24envhashref_2c__">$term = new urxvt::term $envhashref, $rxvtname, [arg...]</a></strong><br />
808 </dt>
809 <dd>
810 Creates a new terminal, very similar as if you had started it with system
811 <code>$rxvtname, arg...</code>. <code>$envhashref</code> must be a reference to a <code>%ENV</code>-like
812 hash which defines the environment of the new terminal.
813 </dd>
814 <dd>
815 <p>Croaks (and probably outputs an error message) if the new instance
816 couldn't be created. Returns <code>undef</code> if the new instance didn't
817 initialise perl, and the terminal object otherwise. The <code>init</code> and
818 <a href="#item_start"><code>start</code></a> hooks will be called during this call.</p>
819 </dd>
820 <p></p>
821 <dt><strong><a name="item_destroy">$term-&gt;destroy</a></strong><br />
822 </dt>
823 <dd>
824 Destroy the terminal object (close the window, free resources
825 etc.). Please note that rxvt will not exit as long as any event
826 watchers (timers, io watchers) are still active.
827 </dd>
828 <p></p>
829 <dt><strong><a name="item_exec_async">$term-&gt;exec_async ($cmd[, @args])</a></strong><br />
830 </dt>
831 <dd>
832 Works like the combination of the <code>fork</code>/<code>exec</code> builtins, which executes
833 (``starts'') programs in the background. This function takes care of setting
834 the user environment before exec'ing the command (e.g. <code>PATH</code>) and should
835 be preferred over explicit calls to <code>exec</code> or <code>system</code>.
836 </dd>
837 <dd>
838 <p>Returns the pid of the subprocess or <code>undef</code> on error.</p>
839 </dd>
840 <p></p>
841 <dt><strong><a name="item_option">$isset = $term-&gt;option ($optval[, $set])</a></strong><br />
842 </dt>
843 <dd>
844 Returns true if the option specified by <code>$optval</code> is enabled, and
845 optionally change it. All option values are stored by name in the hash
846 <code>%urxvt::OPTION</code>. Options not enabled in this binary are not in the hash.
847 </dd>
848 <dd>
849 <p>Here is a a likely non-exhaustive list of option names, please see the
850 source file <em>/src/optinc.h</em> to see the actual list:</p>
851 </dd>
852 <dd>
853 <pre>
854 borderLess console cursorBlink cursorUnderline hold iconic insecure
855 intensityStyles jumpScroll loginShell mapAlert meta8 mouseWheelScrollPage
856 override-redirect pastableTabs pointerBlank reverseVideo scrollBar
857 scrollBar_floating scrollBar_right scrollTtyKeypress scrollTtyOutput
858 scrollWithBuffer secondaryScreen secondaryScroll skipBuiltinGlyphs
859 transparent tripleclickwords utmpInhibit visualBell</pre>
860 </dd>
861 <p></p>
862 <dt><strong><a name="item_resource">$value = $term-&gt;resource ($name[, $newval])</a></strong><br />
863 </dt>
864 <dd>
865 Returns the current resource value associated with a given name and
866 optionally sets a new value. Setting values is most useful in the <code>init</code>
867 hook. Unset resources are returned and accepted as <code>undef</code>.
868 </dd>
869 <dd>
870 <p>The new value must be properly encoded to a suitable character encoding
871 before passing it to this method. Similarly, the returned value may need
872 to be converted from the used encoding to text.</p>
873 </dd>
874 <dd>
875 <p>Resource names are as defined in <em>src/rsinc.h</em>. Colours can be specified
876 as resource names of the form <code>color+&lt;index&gt;</code>, e.g. <code>color+5</code>. (will
877 likely change).</p>
878 </dd>
879 <dd>
880 <p>Please note that resource strings will currently only be freed when the
881 terminal is destroyed, so changing options frequently will eat memory.</p>
882 </dd>
883 <dd>
884 <p>Here is a a likely non-exhaustive list of resource names, not all of which
885 are supported in every build, please see the source file <em>/src/rsinc.h</em>
886 to see the actual list:</p>
887 </dd>
888 <dd>
889 <pre>
890 answerbackstring backgroundPixmap backspace_key boldFont boldItalicFont
891 borderLess color cursorBlink cursorUnderline cutchars delete_key
892 display_name embed ext_bwidth fade font geometry hold iconName
893 imFont imLocale inputMethod insecure int_bwidth intensityStyles
894 italicFont jumpScroll lineSpace loginShell mapAlert meta8 modifier
895 mouseWheelScrollPage name override_redirect pastableTabs path perl_eval
896 perl_ext_1 perl_ext_2 perl_lib pointerBlank pointerBlankDelay
897 preeditType print_pipe pty_fd reverseVideo saveLines scrollBar
898 scrollBar_align scrollBar_floating scrollBar_right scrollBar_thickness
899 scrollTtyKeypress scrollTtyOutput scrollWithBuffer scrollstyle
900 secondaryScreen secondaryScroll selectstyle shade term_name title
901 transient_for transparent transparent_all tripleclickwords utmpInhibit
902 visualBell</pre>
903 </dd>
904 <p></p>
905 <dt><strong><a name="item_x_resource">$value = $term-&gt;x_resource ($pattern)</a></strong><br />
906 </dt>
907 <dd>
908 Returns the X-Resource for the given pattern, excluding the program or
909 class name, i.e. <a href="#item_x_resource"><code>$term-&gt;x_resource (&quot;boldFont&quot;)</code></a> should return the
910 same value as used by this instance of rxvt-unicode. Returns <code>undef</code> if no
911 resource with that pattern exists.
912 </dd>
913 <dd>
914 <p>This method should only be called during the <code>on_start</code> hook, as there is
915 only one resource database per display, and later invocations might return
916 the wrong resources.</p>
917 </dd>
918 <p></p>
919 <dt><strong><a name="item_parse_keysym">$success = $term-&gt;parse_keysym ($keysym_spec, $command_string)</a></strong><br />
920 </dt>
921 <dd>
922 Adds a keymap translation exactly as specified via a resource. See the
923 <code>keysym</code> resource in the <code>rxvt(1)</code> manpage.
924 </dd>
925 <p></p>
926 <dt><strong><a name="item_rstyle">$rend = $term-&gt;rstyle ([$new_rstyle])</a></strong><br />
927 </dt>
928 <dd>
929 Return and optionally change the current rendition. Text that is output by
930 the terminal application will use this style.
931 </dd>
932 <p></p>
933 <dt><strong><a name="item_screen_cur">($row, $col) = $term-&gt;screen_cur ([$row, $col])</a></strong><br />
934 </dt>
935 <dd>
936 Return the current coordinates of the text cursor position and optionally
937 set it (which is usually bad as applications don't expect that).
938 </dd>
939 <p></p>
940 <dt><strong><a name="item_selection_mark">($row, $col) = $term-&gt;selection_mark ([$row, $col])</a></strong><br />
941 </dt>
942 <dt><strong><a name="item_selection_beg">($row, $col) = $term-&gt;selection_beg ([$row, $col])</a></strong><br />
943 </dt>
944 <dt><strong><a name="item_selection_end">($row, $col) = $term-&gt;selection_end ([$row, $col])</a></strong><br />
945 </dt>
946 <dd>
947 Return the current values of the selection mark, begin or end positions,
948 and optionally set them to new values.
949 </dd>
950 <p></p>
951 <dt><strong><a name="item_selection_make">$term-&gt;selection_make ($eventtime[, $rectangular])</a></strong><br />
952 </dt>
953 <dd>
954 Tries to make a selection as set by <a href="#item_selection_beg"><code>selection_beg</code></a> and
955 <a href="#item_selection_end"><code>selection_end</code></a>. If <code>$rectangular</code> is true (default: false), a
956 rectangular selection will be made. This is the prefered function to make
957 a selection.
958 </dd>
959 <p></p>
960 <dt><strong><a name="item_selection_grab">$success = $term-&gt;selection_grab ($eventtime)</a></strong><br />
961 </dt>
962 <dd>
963 Try to request the primary selection text from the server (for example, as
964 set by the next method). No visual feedback will be given. This function
965 is mostly useful from within <code>on_sel_grab</code> hooks.
966 </dd>
967 <p></p>
968 <dt><strong>$oldtext = $term-&gt;selection ([$newtext])</strong><br />
969 </dt>
970 <dd>
971 Return the current selection text and optionally replace it by <code>$newtext</code>.
972 </dd>
973 <p></p>
974 <dt><strong><a name="item_overlay_simple">$term-&gt;overlay_simple ($x, $y, $text)</a></strong><br />
975 </dt>
976 <dd>
977 Create a simple multi-line overlay box. See the next method for details.
978 </dd>
979 <p></p>
980 <dt><strong><a name="item_overlay">$term-&gt;overlay ($x, $y, $width, $height[, $rstyle[, $border]])</a></strong><br />
981 </dt>
982 <dd>
983 Create a new (empty) overlay at the given position with the given
984 width/height. <code>$rstyle</code> defines the initial rendition style
985 (default: <code>OVERLAY_RSTYLE</code>).
986 </dd>
987 <dd>
988 <p>If <code>$border</code> is <code>2</code> (default), then a decorative border will be put
989 around the box.</p>
990 </dd>
991 <dd>
992 <p>If either <code>$x</code> or <code>$y</code> is negative, then this is counted from the
993 right/bottom side, respectively.</p>
994 </dd>
995 <dd>
996 <p>This method returns an urxvt::overlay object. The overlay will be visible
997 as long as the perl object is referenced.</p>
998 </dd>
999 <dd>
1000 <p>The methods currently supported on <code>urxvt::overlay</code> objects are:</p>
1001 </dd>
1002 <dl>
1003 <dt><strong><a name="item_set">$overlay-&gt;set ($x, $y, $text, $rend)</a></strong><br />
1004 </dt>
1005 <dd>
1006 Similar to <a href="#item_row_t"><code>$term-&gt;ROW_t</code></a> and <a href="#item_row_r"><code>$term-&gt;ROW_r</code></a> in that it puts
1007 text in rxvt-unicode's special encoding and an array of rendition values
1008 at a specific position inside the overlay.
1009 </dd>
1010 <p></p>
1011 <dt><strong><a name="item_hide">$overlay-&gt;hide</a></strong><br />
1012 </dt>
1013 <dd>
1014 If visible, hide the overlay, but do not destroy it.
1015 </dd>
1016 <p></p>
1017 <dt><strong><a name="item_show">$overlay-&gt;show</a></strong><br />
1018 </dt>
1019 <dd>
1020 If hidden, display the overlay again.
1021 </dd>
1022 <p></p></dl>
1023 <dt><strong>$popup = $term-&gt;popup ($event)</strong><br />
1024 </dt>
1025 <dd>
1026 Creates a new <code>urxvt::popup</code> object that implements a popup menu. The
1027 <code>$event</code> <em>must</em> be the event causing the menu to pop up (a button event,
1028 currently).
1029 </dd>
1030 <p></p>
1031 <dt><strong><a name="item_strwidth">$cellwidth = $term-&gt;strwidth ($string)</a></strong><br />
1032 </dt>
1033 <dd>
1034 Returns the number of screen-cells this string would need. Correctly
1035 accounts for wide and combining characters.
1036 </dd>
1037 <p></p>
1038 <dt><strong><a name="item_locale_encode">$octets = $term-&gt;locale_encode ($string)</a></strong><br />
1039 </dt>
1040 <dd>
1041 Convert the given text string into the corresponding locale encoding.
1042 </dd>
1043 <p></p>
1044 <dt><strong><a name="item_locale_decode">$string = $term-&gt;locale_decode ($octets)</a></strong><br />
1045 </dt>
1046 <dd>
1047 Convert the given locale-encoded octets into a perl string.
1048 </dd>
1049 <p></p>
1050 <dt><strong><a name="item_scr_xor_span">$term-&gt;scr_xor_span ($beg_row, $beg_col, $end_row, $end_col[, $rstyle])</a></strong><br />
1051 </dt>
1052 <dd>
1053 XORs the rendition values in the given span with the provided value
1054 (default: <code>RS_RVid</code>), which <em>MUST NOT</em> contain font styles. Useful in
1055 refresh hooks to provide effects similar to the selection.
1056 </dd>
1057 <p></p>
1058 <dt><strong><a name="item_scr_xor_rect">$term-&gt;scr_xor_rect ($beg_row, $beg_col, $end_row, $end_col[, $rstyle1[, $rstyle2]])</a></strong><br />
1059 </dt>
1060 <dd>
1061 Similar to <a href="#item_scr_xor_span"><code>scr_xor_span</code></a>, but xors a rectangle instead. Trailing
1062 whitespace will additionally be xored with the <code>$rstyle2</code>, which defaults
1063 to <code>RS_RVid | RS_Uline</code>, which removes reverse video again and underlines
1064 it instead. Both styles <em>MUST NOT</em> contain font styles.
1065 </dd>
1066 <p></p>
1067 <dt><strong><a name="item_scr_bell">$term-&gt;scr_bell</a></strong><br />
1068 </dt>
1069 <dd>
1070 Ring the bell!
1071 </dd>
1072 <p></p>
1073 <dt><strong><a name="item_scr_add_lines">$term-&gt;scr_add_lines ($string)</a></strong><br />
1074 </dt>
1075 <dd>
1076 Write the given text string to the screen, as if output by the application
1077 running inside the terminal. It may not contain command sequences (escape
1078 codes), but is free to use line feeds, carriage returns and tabs. The
1079 string is a normal text string, not in locale-dependent encoding.
1080 </dd>
1081 <dd>
1082 <p>Normally its not a good idea to use this function, as programs might be
1083 confused by changes in cursor position or scrolling. Its useful inside a
1084 <code>on_add_lines</code> hook, though.</p>
1085 </dd>
1086 <p></p>
1087 <dt><strong><a name="item_cmd_parse">$term-&gt;cmd_parse ($octets)</a></strong><br />
1088 </dt>
1089 <dd>
1090 Similar to <a href="#item_scr_add_lines"><code>scr_add_lines</code></a>, but the argument must be in the
1091 locale-specific encoding of the terminal and can contain command sequences
1092 (escape codes) that will be interpreted.
1093 </dd>
1094 <p></p>
1095 <dt><strong><a name="item_tt_write">$term-&gt;tt_write ($octets)</a></strong><br />
1096 </dt>
1097 <dd>
1098 Write the octets given in <code>$data</code> to the tty (i.e. as program input). To
1099 pass characters instead of octets, you should convert your strings first
1100 to the locale-specific encoding using <a href="#item_locale_encode"><code>$term-&gt;locale_encode</code></a>.
1101 </dd>
1102 <p></p>
1103 <dt><strong><a name="item_pty_ev_events">$old_events = $term-&gt;pty_ev_events ([$new_events])</a></strong><br />
1104 </dt>
1105 <dd>
1106 Replaces the event mask of the pty watcher by the given event mask. Can
1107 be used to suppress input and output handling to the pty/tty. See the
1108 description of <a href="#item_events"><code>urxvt::timer-&gt;events</code></a>. Make sure to always restore
1109 the previous value.
1110 </dd>
1111 <p></p>
1112 <dt><strong><a name="item_parent">$windowid = $term-&gt;parent</a></strong><br />
1113 </dt>
1114 <dd>
1115 Return the window id of the toplevel window.
1116 </dd>
1117 <p></p>
1118 <dt><strong><a name="item_vt">$windowid = $term-&gt;vt</a></strong><br />
1119 </dt>
1120 <dd>
1121 Return the window id of the terminal window.
1122 </dd>
1123 <p></p>
1124 <dt><strong><a name="item_vt_emask_add">$term-&gt;vt_emask_add ($x_event_mask)</a></strong><br />
1125 </dt>
1126 <dd>
1127 Adds the specified events to the vt event mask. Useful e.g. when you want
1128 to receive pointer events all the times:
1129 </dd>
1130 <dd>
1131 <pre>
1132 $term-&gt;vt_emask_add (urxvt::PointerMotionMask);</pre>
1133 </dd>
1134 <p></p>
1135 <dt><strong><a name="item_width">$window_width = $term-&gt;width</a></strong><br />
1136 </dt>
1137 <dt><strong><a name="item_height">$window_height = $term-&gt;height</a></strong><br />
1138 </dt>
1139 <dt><strong><a name="item_fwidth">$font_width = $term-&gt;fwidth</a></strong><br />
1140 </dt>
1141 <dt><strong><a name="item_fheight">$font_height = $term-&gt;fheight</a></strong><br />
1142 </dt>
1143 <dt><strong><a name="item_fbase">$font_ascent = $term-&gt;fbase</a></strong><br />
1144 </dt>
1145 <dt><strong><a name="item_nrow">$terminal_rows = $term-&gt;nrow</a></strong><br />
1146 </dt>
1147 <dt><strong><a name="item_ncol">$terminal_columns = $term-&gt;ncol</a></strong><br />
1148 </dt>
1149 <dt><strong><a name="item_focus">$has_focus = $term-&gt;focus</a></strong><br />
1150 </dt>
1151 <dt><strong><a name="item_mapped">$is_mapped = $term-&gt;mapped</a></strong><br />
1152 </dt>
1153 <dt><strong><a name="item_savelines">$max_scrollback = $term-&gt;saveLines</a></strong><br />
1154 </dt>
1155 <dt><strong><a name="item_total_rows">$nrow_plus_saveLines = $term-&gt;total_rows</a></strong><br />
1156 </dt>
1157 <dt><strong><a name="item_top_row">$topmost_scrollback_row = $term-&gt;top_row</a></strong><br />
1158 </dt>
1159 <dd>
1160 Return various integers describing terminal characteristics.
1161 </dd>
1162 <p></p>
1163 <dt><strong><a name="item_display_id">$x_display = $term-&gt;display_id</a></strong><br />
1164 </dt>
1165 <dd>
1166 Return the DISPLAY used by rxvt-unicode.
1167 </dd>
1168 <p></p>
1169 <dt><strong><a name="item_locale">$lc_ctype = $term-&gt;locale</a></strong><br />
1170 </dt>
1171 <dd>
1172 Returns the LC_CTYPE category string used by this rxvt-unicode.
1173 </dd>
1174 <p></p>
1175 <dt><strong><a name="item_env">$env = $term-&gt;env</a></strong><br />
1176 </dt>
1177 <dd>
1178 Returns a copy of the environment in effect for the terminal as a hashref
1179 similar to <code>\%ENV</code>.
1180 </dd>
1181 <p></p>
1182 <dt><strong><a name="item_modlevel3mask">$modifiermask = $term-&gt;ModLevel3Mask</a></strong><br />
1183 </dt>
1184 <dt><strong><a name="item_modmetamask">$modifiermask = $term-&gt;ModMetaMask</a></strong><br />
1185 </dt>
1186 <dt><strong><a name="item_modnumlockmask">$modifiermask = $term-&gt;ModNumLockMask</a></strong><br />
1187 </dt>
1188 <dd>
1189 Return the modifier masks corresponding to the ``ISO Level 3 Shift'' (often
1190 AltGr), the meta key (often Alt) and the num lock key, if applicable.
1191 </dd>
1192 <p></p>
1193 <dt><strong><a name="item_view_start">$view_start = $term-&gt;view_start ([$newvalue])</a></strong><br />
1194 </dt>
1195 <dd>
1196 Returns the row number of the topmost displayed line. Maximum value is
1197 <code>0</code>, which displays the normal terminal contents. Lower values scroll
1198 this many lines into the scrollback buffer.
1199 </dd>
1200 <p></p>
1201 <dt><strong><a name="item_want_refresh">$term-&gt;want_refresh</a></strong><br />
1202 </dt>
1203 <dd>
1204 Requests a screen refresh. At the next opportunity, rxvt-unicode will
1205 compare the on-screen display with its stored representation. If they
1206 differ, it redraws the differences.
1207 </dd>
1208 <dd>
1209 <p>Used after changing terminal contents to display them.</p>
1210 </dd>
1211 <p></p>
1212 <dt><strong><a name="item_row_t">$text = $term-&gt;ROW_t ($row_number[, $new_text[, $start_col]])</a></strong><br />
1213 </dt>
1214 <dd>
1215 Returns the text of the entire row with number <code>$row_number</code>. Row <code>0</code>
1216 is the topmost terminal line, row <code>$term-&gt;$ncol-1</code> is the bottommost
1217 terminal line. The scrollback buffer starts at line <code>-1</code> and extends to
1218 line <code>-$term-&gt;nsaved</code>. Nothing will be returned if a nonexistent line
1219 is requested.
1220 </dd>
1221 <dd>
1222 <p>If <code>$new_text</code> is specified, it will replace characters in the current
1223 line, starting at column <code>$start_col</code> (default <code>0</code>), which is useful
1224 to replace only parts of a line. The font index in the rendition will
1225 automatically be updated.</p>
1226 </dd>
1227 <dd>
1228 <p><a href="#item__24text"><code>$text</code></a> is in a special encoding: tabs and wide characters that use more
1229 than one cell when displayed are padded with urxvt::NOCHAR characters
1230 (<code>chr 65535</code>). Characters with combining characters and other characters
1231 that do not fit into the normal tetx encoding will be replaced with
1232 characters in the private use area.</p>
1233 </dd>
1234 <dd>
1235 <p>You have to obey this encoding when changing text. The advantage is
1236 that <code>substr</code> and similar functions work on screen cells and not on
1237 characters.</p>
1238 </dd>
1239 <dd>
1240 <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>
1241 can be used to convert normal strings into this encoding and vice versa.</p>
1242 </dd>
1243 <p></p>
1244 <dt><strong><a name="item_row_r">$rend = $term-&gt;ROW_r ($row_number[, $new_rend[, $start_col]])</a></strong><br />
1245 </dt>
1246 <dd>
1247 Like <a href="#item_row_t"><code>$term-&gt;ROW_t</code></a>, but returns an arrayref with rendition
1248 bitsets. Rendition bitsets contain information about colour, font, font
1249 styles and similar information. See also <a href="#item_row_t"><code>$term-&gt;ROW_t</code></a>.
1250 </dd>
1251 <dd>
1252 <p>When setting rendition, the font mask will be ignored.</p>
1253 </dd>
1254 <dd>
1255 <p>See the section on RENDITION, above.</p>
1256 </dd>
1257 <p></p>
1258 <dt><strong><a name="item_row_l">$length = $term-&gt;ROW_l ($row_number[, $new_length])</a></strong><br />
1259 </dt>
1260 <dd>
1261 Returns the number of screen cells that are in use (``the line
1262 length''). Unlike the urxvt core, this returns <a href="#item_ncol"><code>$term-&gt;ncol</code></a> if the
1263 line is joined with the following one.
1264 </dd>
1265 <p></p>
1266 <dt><strong><a name="item_is_longer">$bool = $term-&gt;is_longer ($row_number)</a></strong><br />
1267 </dt>
1268 <dd>
1269 Returns true if the row is part of a multiple-row logical ``line'' (i.e.
1270 joined with the following row), which means all characters are in use
1271 and it is continued on the next row (and possibly a continuation of the
1272 previous row(s)).
1273 </dd>
1274 <p></p>
1275 <dt><strong><a name="item_line">$line = $term-&gt;line ($row_number)</a></strong><br />
1276 </dt>
1277 <dd>
1278 Create and return a new <code>urxvt::line</code> object that stores information
1279 about the logical line that row <code>$row_number</code> is part of. It supports the
1280 following methods:
1281 </dd>
1282 <dl>
1283 <dt><strong><a name="item_t">$text = $line-&gt;t ([$new_text])</a></strong><br />
1284 </dt>
1285 <dd>
1286 Returns or replaces the full text of the line, similar to <a href="#item_row_t"><code>ROW_t</code></a>
1287 </dd>
1288 <p></p>
1289 <dt><strong><a name="item_r">$rend = $line-&gt;r ([$new_rend])</a></strong><br />
1290 </dt>
1291 <dd>
1292 Returns or replaces the full rendition array of the line, similar to <a href="#item_row_r"><code>ROW_r</code></a>
1293 </dd>
1294 <p></p>
1295 <dt><strong><a name="item_l">$length = $line-&gt;l</a></strong><br />
1296 </dt>
1297 <dd>
1298 Returns the length of the line in cells, similar to <a href="#item_row_l"><code>ROW_l</code></a>.
1299 </dd>
1300 <p></p>
1301 <dt><strong><a name="item_beg">$rownum = $line-&gt;beg</a></strong><br />
1302 </dt>
1303 <dt><strong><a name="item_end">$rownum = $line-&gt;end</a></strong><br />
1304 </dt>
1305 <dd>
1306 Return the row number of the first/last row of the line, respectively.
1307 </dd>
1308 <p></p>
1309 <dt><strong><a name="item_offset_of">$offset = $line-&gt;offset_of ($row, $col)</a></strong><br />
1310 </dt>
1311 <dd>
1312 Returns the character offset of the given row|col pair within the logical
1313 line. Works for rows outside the line, too, and returns corresponding
1314 offsets outside the string.
1315 </dd>
1316 <p></p>
1317 <dt><strong><a name="item_coord_of">($row, $col) = $line-&gt;coord_of ($offset)</a></strong><br />
1318 </dt>
1319 <dd>
1320 Translates a string offset into terminal coordinates again.
1321 </dd>
1322 <p></p></dl>
1323 <dt><strong><a name="item_special_encode">$text = $term-&gt;special_encode $string</a></strong><br />
1324 </dt>
1325 <dd>
1326 Converts a perl string into the special encoding used by rxvt-unicode,
1327 where one character corresponds to one screen cell. See
1328 <a href="#item_row_t"><code>$term-&gt;ROW_t</code></a> for details.
1329 </dd>
1330 <p></p>
1331 <dt><strong><a name="item_special_decode">$string = $term-&gt;special_decode $text</a></strong><br />
1332 </dt>
1333 <dd>
1334 Converts rxvt-unicodes text reprsentation into a perl string. See
1335 <a href="#item_row_t"><code>$term-&gt;ROW_t</code></a> for details.
1336 </dd>
1337 <p></p>
1338 <dt><strong><a name="item_grab_button">$success = $term-&gt;grab_button ($button, $modifiermask)</a></strong><br />
1339 </dt>
1340 <dd>
1341 Registers a synchronous button grab. See the XGrabButton manpage.
1342 </dd>
1343 <p></p>
1344 <dt><strong><a name="item_grab">$success = $term-&gt;grab ($eventtime[, $sync])</a></strong><br />
1345 </dt>
1346 <dd>
1347 Calls XGrabPointer and XGrabKeyboard in asynchronous (default) or
1348 synchronous (<code>$sync</code> is true). Also remembers the grab timestampe.
1349 </dd>
1350 <p></p>
1351 <dt><strong><a name="item_allow_events_async">$term-&gt;allow_events_async</a></strong><br />
1352 </dt>
1353 <dd>
1354 Calls XAllowEvents with AsyncBoth for the most recent grab.
1355 </dd>
1356 <p></p>
1357 <dt><strong><a name="item_allow_events_sync">$term-&gt;allow_events_sync</a></strong><br />
1358 </dt>
1359 <dd>
1360 Calls XAllowEvents with SyncBoth for the most recent grab.
1361 </dd>
1362 <p></p>
1363 <dt><strong><a name="item_allow_events_replay">$term-&gt;allow_events_replay</a></strong><br />
1364 </dt>
1365 <dd>
1366 Calls XAllowEvents with both ReplayPointer and ReplayKeyboard for the most
1367 recent grab.
1368 </dd>
1369 <p></p>
1370 <dt><strong><a name="item_ungrab">$term-&gt;ungrab</a></strong><br />
1371 </dt>
1372 <dd>
1373 Calls XUngrab for the most recent grab. Is called automatically on
1374 evaluation errors, as it is better to lose the grab in the error case as
1375 the session.
1376 </dd>
1377 <p></p></dl>
1378 <p>
1379 </p>
1380 <h2><a name="the_urxvt__popup_class">The <code>urxvt::popup</code> Class</a></h2>
1381 <dl>
1382 <dt><strong><a name="item_add_title">$popup-&gt;add_title ($title)</a></strong><br />
1383 </dt>
1384 <dd>
1385 Adds a non-clickable title to the popup.
1386 </dd>
1387 <p></p>
1388 <dt><strong><a name="item_add_separator">$popup-&gt;add_separator ([$sepchr])</a></strong><br />
1389 </dt>
1390 <dd>
1391 Creates a separator, optionally using the character given as <code>$sepchr</code>.
1392 </dd>
1393 <p></p>
1394 <dt><strong><a name="item_add_button">$popup-&gt;add_button ($text, $cb)</a></strong><br />
1395 </dt>
1396 <dd>
1397 Adds a clickable button to the popup. <code>$cb</code> is called whenever it is
1398 selected.
1399 </dd>
1400 <p></p>
1401 <dt><strong><a name="item_add_toggle">$popup-&gt;add_toggle ($text, $cb, $initial_value)</a></strong><br />
1402 </dt>
1403 <dd>
1404 Adds a toggle/checkbox item to the popup. Teh callback gets called
1405 whenever it gets toggled, with a boolean indicating its value as its first
1406 argument.
1407 </dd>
1408 <p></p>
1409 <dt><strong>$popup-&gt;show</strong><br />
1410 </dt>
1411 <dd>
1412 Displays the popup (which is initially hidden).
1413 </dd>
1414 <p></p></dl>
1415 <p>
1416 </p>
1417 <h2><a name="the_urxvt__timer_class">The <code>urxvt::timer</code> Class</a></h2>
1418 <p>This class implements timer watchers/events. Time is represented as a
1419 fractional number of seconds since the epoch. Example:</p>
1420 <pre>
1421 $term-&gt;{overlay} = $term-&gt;overlay (-1, 0, 8, 1, urxvt::OVERLAY_RSTYLE, 0);
1422 $term-&gt;{timer} = urxvt::timer
1423 -&gt;new
1424 -&gt;interval (1)
1425 -&gt;cb (sub {
1426 $term-&gt;{overlay}-&gt;set (0, 0,
1427 sprintf &quot;%2d:%02d:%02d&quot;, (localtime urxvt::NOW)[2,1,0]);
1428 });</pre>
1429 <dl>
1430 <dt><strong><a name="item__24timer__3d_new_urxvt_3a_3atimer">$timer = new urxvt::timer</a></strong><br />
1431 </dt>
1432 <dd>
1433 Create a new timer object in started state. It is scheduled to fire
1434 immediately.
1435 </dd>
1436 <p></p>
1437 <dt><strong><a name="item_cb">$timer = $timer-&gt;cb (sub { my ($timer) = @_; ... })</a></strong><br />
1438 </dt>
1439 <dd>
1440 Set the callback to be called when the timer triggers.
1441 </dd>
1442 <p></p>
1443 <dt><strong><a name="item_at">$tstamp = $timer-&gt;at</a></strong><br />
1444 </dt>
1445 <dd>
1446 Return the time this watcher will fire next.
1447 </dd>
1448 <p></p>
1449 <dt><strong>$timer = $timer-&gt;set ($tstamp)</strong><br />
1450 </dt>
1451 <dd>
1452 Set the time the event is generated to $tstamp.
1453 </dd>
1454 <p></p>
1455 <dt><strong><a name="item_interval">$timer = $timer-&gt;interval ($interval)</a></strong><br />
1456 </dt>
1457 <dd>
1458 Normally (and when <code>$interval</code> is <code>0</code>), the timer will automatically
1459 stop after it has fired once. If <code>$interval</code> is non-zero, then the timer
1460 is automatically rescheduled at the given intervals.
1461 </dd>
1462 <p></p>
1463 <dt><strong><a name="item_start">$timer = $timer-&gt;start</a></strong><br />
1464 </dt>
1465 <dd>
1466 Start the timer.
1467 </dd>
1468 <p></p>
1469 <dt><strong>$timer = $timer-&gt;start ($tstamp)</strong><br />
1470 </dt>
1471 <dd>
1472 Set the event trigger time to <code>$tstamp</code> and start the timer.
1473 </dd>
1474 <p></p>
1475 <dt><strong><a name="item_after">$timer = $timer-&gt;after ($delay)</a></strong><br />
1476 </dt>
1477 <dd>
1478 Like <a href="#item_start"><code>start</code></a>, but sets the expiry timer to c&lt;urxvt::NOW + $delay&gt;.
1479 </dd>
1480 <p></p>
1481 <dt><strong><a name="item_stop">$timer = $timer-&gt;stop</a></strong><br />
1482 </dt>
1483 <dd>
1484 Stop the timer.
1485 </dd>
1486 <p></p></dl>
1487 <p>
1488 </p>
1489 <h2><a name="the_urxvt__iow_class">The <code>urxvt::iow</code> Class</a></h2>
1490 <p>This class implements io watchers/events. Example:</p>
1491 <pre>
1492 $term-&gt;{socket} = ...
1493 $term-&gt;{iow} = urxvt::iow
1494 -&gt;new
1495 -&gt;fd (fileno $term-&gt;{socket})
1496 -&gt;events (urxvt::EVENT_READ)
1497 -&gt;start
1498 -&gt;cb (sub {
1499 my ($iow, $revents) = @_;
1500 # $revents must be 1 here, no need to check
1501 sysread $term-&gt;{socket}, my $buf, 8192
1502 or end-of-file;
1503 });</pre>
1504 <dl>
1505 <dt><strong><a name="item__24iow__3d_new_urxvt_3a_3aiow">$iow = new urxvt::iow</a></strong><br />
1506 </dt>
1507 <dd>
1508 Create a new io watcher object in stopped state.
1509 </dd>
1510 <p></p>
1511 <dt><strong>$iow = $iow-&gt;cb (sub { my ($iow, $reventmask) = @_; ... })</strong><br />
1512 </dt>
1513 <dd>
1514 Set the callback to be called when io events are triggered. <code>$reventmask</code>
1515 is a bitset as described in the <a href="#item_events"><code>events</code></a> method.
1516 </dd>
1517 <p></p>
1518 <dt><strong><a name="item_fd">$iow = $iow-&gt;fd ($fd)</a></strong><br />
1519 </dt>
1520 <dd>
1521 Set the filedescriptor (not handle) to watch.
1522 </dd>
1523 <p></p>
1524 <dt><strong><a name="item_events">$iow = $iow-&gt;events ($eventmask)</a></strong><br />
1525 </dt>
1526 <dd>
1527 Set the event mask to watch. The only allowed values are
1528 <code>urxvt::EVENT_READ</code> and <code>urxvt::EVENT_WRITE</code>, which might be ORed
1529 together, or <code>urxvt::EVENT_NONE</code>.
1530 </dd>
1531 <p></p>
1532 <dt><strong>$iow = $iow-&gt;start</strong><br />
1533 </dt>
1534 <dd>
1535 Start watching for requested events on the given handle.
1536 </dd>
1537 <p></p>
1538 <dt><strong>$iow = $iow-&gt;stop</strong><br />
1539 </dt>
1540 <dd>
1541 Stop watching for events on the given filehandle.
1542 </dd>
1543 <p></p></dl>
1544 <p>
1545 </p>
1546 <hr />
1547 <h1><a name="environment">ENVIRONMENT</a></h1>
1548 <p>
1549 </p>
1550 <h2><a name="urxvt_perl_verbosity">URXVT_PERL_VERBOSITY</a></h2>
1551 <p>This variable controls the verbosity level of the perl extension. Higher
1552 numbers indicate more verbose output.</p>
1553 <dl>
1554 <dt><strong><a name="item__3d_3d_0__2d_fatal_messages">== 0 - fatal messages</a></strong><br />
1555 </dt>
1556 <dt><strong><a name="item__3e_3d_3__2d_script_loading_and_management">&gt;= 3 - script loading and management</a></strong><br />
1557 </dt>
1558 <dt><strong><a name="item__3e_3d10__2d_all_called_hooks">&gt;=10 - all called hooks</a></strong><br />
1559 </dt>
1560 <dt><strong><a name="item__3e_3d11__2d_hook_reutrn_values">&gt;=11 - hook reutrn values</a></strong><br />
1561 </dt>
1562 </dl>
1563 <p>
1564 </p>
1565 <hr />
1566 <h1><a name="author">AUTHOR</a></h1>
1567 <pre>
1568 Marc Lehmann &lt;pcg@goof.com&gt;
1569 <a href="http://software.schmorp.de/pkg/rxvt-unicode">http://software.schmorp.de/pkg/rxvt-unicode</a></pre>
1570
1571 </body>
1572
1573 </html>