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13<ul> 13<ul>
14 14
15 <li><a href="#name">NAME</a></li> 15 <li><a href="#name">NAME</a></li>
16 <li><a href="#synopsis">SYNOPSIS</a></li> 16 <li><a href="#synopsis">SYNOPSIS</a></li>
17 <li><a href="#description">DESCRIPTION</a></li> 17 <li><a href="#description">DESCRIPTION</a></li>
18 <li><a href="#packaged_extensions">PACKAGED EXTENSIONS</a></li>
19 <ul> 18 <ul>
20 19
20 <li><a href="#prepackaged_extensions">Prepackaged Extensions</a></li>
21 <li><a href="#general_api_considerations">General API Considerations</a></li> 21 <li><a href="#general_api_considerations">General API Considerations</a></li>
22 <li><a href="#hooks">Hooks</a></li> 22 <li><a href="#hooks">Hooks</a></li>
23 <li><a href="#variables_in_the_urxvt_package">Variables in the <code>urxvt</code> Package</a></li>
23 <li><a href="#functions_in_the_urxvt_package">Functions in the <code>urxvt</code> Package</a></li> 24 <li><a href="#functions_in_the_urxvt_package">Functions in the <code>urxvt</code> Package</a></li>
25 <li><a href="#rendition">RENDITION</a></li>
24 <li><a href="#the_urxvt__term_class">The <code>urxvt::term</code> Class</a></li> 26 <li><a href="#the_urxvt__term_class">The <code>urxvt::term</code> Class</a></li>
25 <li><a href="#rendition">RENDITION</a></li>
26 <li><a href="#the_urxvt__timer_class">The <code>urxvt::timer</code> Class</a></li> 27 <li><a href="#the_urxvt__timer_class">The <code>urxvt::timer</code> Class</a></li>
27 <li><a href="#the_urxvt__iow_class">The <code>urxvt::iow</code> Class</a></li> 28 <li><a href="#the_urxvt__iow_class">The <code>urxvt::iow</code> Class</a></li>
28 </ul> 29 </ul>
29 30
30 <li><a href="#environment">ENVIRONMENT</a></li> 31 <li><a href="#environment">ENVIRONMENT</a></li>
… …
38<!-- INDEX END --> 39<!-- INDEX END -->
39 40
40<hr /> 41<hr />
41<p> 42<p>
42</p> 43</p>
44<hr />
43<h1><a name="name">NAME</a></h1> 45<h1><a name="name">NAME</a></h1>
44<p>rxvtperl - rxvt-unicode's embedded perl interpreter</p> 46<p>rxvtperl - rxvt-unicode's embedded perl interpreter</p>
45<p> 47<p>
46</p> 48</p>
47<hr /> 49<hr />
… …
64<p>Everytime a terminal object gets created, scripts specified via the 66<p>Everytime a terminal object gets created, scripts specified via the
65<code>perl</code> resource are loaded and associated with it.</p> 67<code>perl</code> resource are loaded and associated with it.</p>
66<p>Scripts are compiled in a 'use strict' and 'use utf8' environment, and 68<p>Scripts are compiled in a 'use strict' and 'use utf8' environment, and
67thus must be encoded as UTF-8.</p> 69thus must be encoded as UTF-8.</p>
68<p>Each script will only ever be loaded once, even in rxvtd, where 70<p>Each script will only ever be loaded once, even in rxvtd, where
69scripts will be shared (But not enabled) for all terminals.</p> 71scripts will be shared (but not enabled) for all terminals.</p>
70<p>
71</p> 72<p>
72<hr /> 73</p>
73<h1><a name="packaged_extensions">PACKAGED EXTENSIONS</a></h1> 74<h2><a name="prepackaged_extensions">Prepackaged Extensions</a></h2>
74<p>This section describes the extensiosn delivered with this version. You can 75<p>This section describes the extensiosn delivered with this version. You can
75find them in <em>/opt/rxvt/lib/urxvt/perl/</em>.</p> 76find them in <em>/opt/rxvt/lib/urxvt/perl/</em>.</p>
76<p>You can activate them like this:</p> 77<p>You can activate them like this:</p>
77<pre> 78<pre>
78 rxvt -pe &lt;extensionname&gt;</pre> 79 rxvt -pe &lt;extensionname&gt;</pre>
79<dl> 80<dl>
80<dt><strong><a name="item_selection">selection</a></strong><br /> 81<dt><strong><a name="item_selection">selection</a></strong><br />
81</dt> 82</dt>
82<dd> 83<dd>
83Miscellaneous selection modifications. 84Intelligent selection. This etxension tries to be more intelligent when the user
85extends selections (double-click).
86</dd>
87<dd>
88<p>It also offers the following bindable event:</p>
84</dd> 89</dd>
85<dl> 90<dl>
86<dt><strong><a name="item_rot13">rot13</a></strong><br /> 91<dt><strong><a name="item_rot13">rot13</a></strong><br />
87</dt> 92</dt>
88<dd> 93<dd>
… …
92<pre> 97<pre>
93 URxvt.keysym.C-M-r: perl:selection:rot13</pre> 98 URxvt.keysym.C-M-r: perl:selection:rot13</pre>
94</dd> 99</dd>
95<p></p></dl> 100<p></p></dl>
96<dt><strong><a name="item_digital_2dclock">digital-clock</a></strong><br /> 101<dt><strong><a name="item_digital_2dclock">digital-clock</a></strong><br />
102</dt>
103<dd>
104Displays a digital clock using the built-in overlay.
105</dd>
106<p></p>
107<dt><strong><a name="item_example_2drefresh_2dhooks">example-refresh-hooks</a></strong><br />
97</dt> 108</dt>
98<dd> 109<dd>
99Displays a very simple digital clock in the upper right corner of the 110Displays a very simple digital clock in the upper right corner of the
100window. Illustrates overwriting the refresh callbacks to create your own 111window. Illustrates overwriting the refresh callbacks to create your own
101overlays or changes. 112overlays or changes.
102</dd>
103<p></p>
104<dt><strong><a name="item_simple_2doverlay_2dclock">simple-overlay-clock</a></strong><br />
105</dt>
106<dd>
107Displays a digital clock using the built-in overlay (colorful, useless).
108</dd> 113</dd>
109<p></p></dl> 114<p></p></dl>
110<p> 115<p>
111</p> 116</p>
112<h2><a name="general_api_considerations">General API Considerations</a></h2> 117<h2><a name="general_api_considerations">General API Considerations</a></h2>
113<p>All objects (such as terminals, time watchers etc.) are typical 118<p>All objects (such as terminals, time watchers etc.) are typical
114reference-to-hash objects. The hash can be used to store anything you 119reference-to-hash objects. The hash can be used to store anything you
115like. All members starting with an underscore (such as <code>_ptr</code> or 120like. All members starting with an underscore (such as <code>_ptr</code> or
116<code>_hook</code>) are reserved for internal uses and must not be accessed or 121<code>_hook</code>) are reserved for internal uses and <strong>MUST NOT</strong> be accessed or
117modified).</p> 122modified).</p>
118<p>When objects are destroyed on the C++ side, the perl object hashes are 123<p>When objects are destroyed on the C++ side, the perl object hashes are
119emptied, so its best to store related objects such as time watchers and 124emptied, so its best to store related objects such as time watchers and
120the like inside the terminal object so they get destroyed as soon as the 125the like inside the terminal object so they get destroyed as soon as the
121terminal is destroyed.</p> 126terminal is destroyed.</p>
122<p> 127<p>
123</p> 128</p>
124<h2><a name="hooks">Hooks</a></h2> 129<h2><a name="hooks">Hooks</a></h2>
125<p>The following subroutines can be declared in loaded scripts, and will be called 130<p>The following subroutines can be declared in loaded scripts, and will be
126whenever the relevant event happens.</p> 131called whenever the relevant event happens.</p>
132<p>The first argument passed to them is an object private to each terminal
133and extension package. You can call all <code>urxvt::term</code> methods on it, but
134its not a real <code>urxvt::term</code> object. Instead, the real <code>urxvt::term</code>
135object that is shared between all packages is stored in the <code>term</code>
136member.</p>
127<p>All of them must return a boolean value. If it is true, then the event 137<p>All of them must return a boolean value. If it is true, then the event
128counts as being <em>consumed</em>, and the invocation of other hooks is skipped, 138counts as being <em>consumed</em>, and the invocation of other hooks is skipped,
129and the relevant action might not be carried out by the C++ code.</p> 139and the relevant action might not be carried out by the C++ code.</p>
130<p>When in doubt, return a false value (preferably <code>()</code>).</p> 140<p>When in doubt, return a false value (preferably <code>()</code>).</p>
131<dl> 141<dl>
… …
172</dd> 182</dd>
173<dd> 183<dd>
174<p>Returning a true value aborts selection grabbing. It will still be hilighted.</p> 184<p>Returning a true value aborts selection grabbing. It will still be hilighted.</p>
175</dd> 185</dd>
176<p></p> 186<p></p>
187<dt><strong><a name="item_on_sel_extend__24term">on_sel_extend $term</a></strong><br />
188</dt>
189<dd>
190Called whenever the user tries to extend the selection (e.g. with a double
191click) and is either supposed to return false (normal operation), or
192should extend the selection itelf and return true to suppress the built-in
193processing.
194</dd>
195<dd>
196<p>See the <em>selection</em> example extension.</p>
197</dd>
198<p></p>
177<dt><strong><a name="item_on_focus_in__24term">on_focus_in $term</a></strong><br /> 199<dt><strong><a name="item_on_focus_in__24term">on_focus_in $term</a></strong><br />
178</dt> 200</dt>
179<dd> 201<dd>
180Called whenever the window gets the keyboard focus, before urxvt does 202Called whenever the window gets the keyboard focus, before urxvt does
181focus in processing. 203focus in processing.
… …
238resource in the <code>rxvt(1)</code> manpage). 260resource in the <code>rxvt(1)</code> manpage).
239</dd> 261</dd>
240<p></p></dl> 262<p></p></dl>
241<p> 263<p>
242</p> 264</p>
265<h2><a name="variables_in_the_urxvt_package">Variables in the <code>urxvt</code> Package</a></h2>
266<dl>
267<dt><strong><a name="item__24urxvt_3a_3aterm">$urxvt::TERM</a></strong><br />
268</dt>
269<dd>
270The current terminal. Whenever a callback/Hook is bein executed, this
271variable stores the current <code>urxvt::term</code> object.
272</dd>
273<p></p></dl>
274<p>
275</p>
243<h2><a name="functions_in_the_urxvt_package">Functions in the <code>urxvt</code> Package</a></h2> 276<h2><a name="functions_in_the_urxvt_package">Functions in the <code>urxvt</code> Package</a></h2>
244<dl> 277<dl>
245<dt><strong><a name="item_urxvt_3a_3afatal__24errormessage">urxvt::fatal $errormessage</a></strong><br /> 278<dt><strong><a name="item_urxvt_3a_3afatal__24errormessage">urxvt::fatal $errormessage</a></strong><br />
246</dt> 279</dt>
247<dd> 280<dd>
… …
264<p></p> 297<p></p>
265<dt><strong><a name="item__24time__3d_urxvt_3a_3anow">$time = urxvt::NOW</a></strong><br /> 298<dt><strong><a name="item__24time__3d_urxvt_3a_3anow">$time = urxvt::NOW</a></strong><br />
266</dt> 299</dt>
267<dd> 300<dd>
268Returns the ``current time'' (as per the event loop). 301Returns the ``current time'' (as per the event loop).
302</dd>
303<p></p></dl>
304<p>
305</p>
306<h2><a name="rendition">RENDITION</a></h2>
307<p>Rendition bitsets contain information about colour, font, font styles and
308similar information for each screen cell.</p>
309<p>The following ``macros'' deal with changes in rendition sets. You should
310never just create a bitset, you should always modify an existing one,
311as they contain important information required for correct operation of
312rxvt-unicode.</p>
313<dl>
314<dt><strong><a name="item__24rend__3d_urxvt_3a_3adefault_rstyle">$rend = urxvt::DEFAULT_RSTYLE</a></strong><br />
315</dt>
316<dd>
317Returns the default rendition, as used when the terminal is starting up or
318being reset. Useful as a base to start when creating renditions.
319</dd>
320<p></p>
321<dt><strong><a name="item__24rend__3d_urxvt_3a_3aoverlay_rstyle">$rend = urxvt::OVERLAY_RSTYLE</a></strong><br />
322</dt>
323<dd>
324Return the rendition mask used for overlays by default.
325</dd>
326<p></p>
327<dt><strong><a name="item__24rendbit__3d_urxvt_3a_3ars_bold_2c_rs_italic_2c_">$rendbit = urxvt::RS_Bold, RS_Italic, RS_Blink, RS_RVid, RS_Uline</a></strong><br />
328</dt>
329<dd>
330Return the bit that enabled bold, italic, blink, reverse-video and
331underline, respectively. To enable such a style, just logically OR it into
332the bitset.
333</dd>
334<p></p>
335<dt><strong><a name="item__24foreground__3d_urxvt_3a_3aget_basefg__24rend">$foreground = urxvt::GET_BASEFG $rend</a></strong><br />
336</dt>
337<dt><strong><a name="item__24background__3d_urxvt_3a_3aget_basebg__24rend">$background = urxvt::GET_BASEBG $rend</a></strong><br />
338</dt>
339<dd>
340Return the foreground/background colour index, respectively.
341</dd>
342<p></p>
343<dt><strong><a name="item_set_fgcolor">$rend = urxvt::SET_FGCOLOR ($rend, $new_colour)</a></strong><br />
344</dt>
345<dt><strong><a name="item_set_bgcolor">$rend = urxvt::SET_BGCOLOR ($rend, $new_colour)</a></strong><br />
346</dt>
347<dd>
348Replace the foreground/background colour in the rendition mask with the
349specified one.
350</dd>
351<p></p>
352<dt><strong><a name="item_get_custom">$value = urxvt::GET_CUSTOM ($rend)</a></strong><br />
353</dt>
354<dd>
355Return the ``custom'' value: Every rendition has 5 bits for use by
356extensions. They can be set and changed as you like and are initially
357zero.
358</dd>
359<p></p>
360<dt><strong><a name="item_set_custom">$rend = urxvt::SET_CUSTOM ($rend, $new_value)</a></strong><br />
361</dt>
362<dd>
363Change the custom value.
269</dd> 364</dd>
270<p></p></dl> 365<p></p></dl>
271<p> 366<p>
272</p> 367</p>
273<h2><a name="the_urxvt__term_class">The <code>urxvt::term</code> Class</a></h2> 368<h2><a name="the_urxvt__term_class">The <code>urxvt::term</code> Class</a></h2>
… …
335<dt><strong>$oldtext = $term-&gt;selection ([$newtext])</strong><br /> 430<dt><strong>$oldtext = $term-&gt;selection ([$newtext])</strong><br />
336</dt> 431</dt>
337<dd> 432<dd>
338Return the current selection text and optionally replace it by <code>$newtext</code>. 433Return the current selection text and optionally replace it by <code>$newtext</code>.
339</dd> 434</dd>
340<p></p>
341<dt><strong><a name="item_scr_overlay">$term-&gt;scr_overlay ($x, $y, $text)</a></strong><br />
342</dt>
343<dd> 435<dd>
436<p>#=item $term-&gt;overlay ($x, $y, $text)
437#
344Create a simple multi-line overlay box. See the next method for details. 438#Create a simple multi-line overlay box. See the next method for details.
439#
440#=cut</p>
441</dd>
345</dd> 442<dd>
443<p>sub urxvt::term::scr_overlay {
444die;
445 my ($self, $x, $y, $text) = @_;</p>
446</dd>
447<dd>
448<pre>
449 my @lines = split /\n/, $text;</pre>
450</dd>
451<dd>
452<pre>
453 my $w = 0;
454 for (map $self-&gt;strwidth ($_), @lines) {
455 $w = $_ if $w &lt; $_;
456 }</pre>
457</dd>
458<dd>
459<pre>
460 $self-&gt;scr_overlay_new ($x, $y, $w, scalar @lines);
461 $self-&gt;scr_overlay_set (0, $_, $lines[$_]) for 0.. $#lines;
462}</pre>
463</dd>
346<p></p> 464<p></p>
347<dt><strong><a name="item_scr_overlay_new">$term-&gt;scr_overlay_new ($x, $y, $width, $height)</a></strong><br /> 465<dt><strong><a name="item_overlay">$term-&gt;overlay ($x, $y, $width, $height[, $rstyle[, $border]])</a></strong><br />
348</dt> 466</dt>
349<dd> 467<dd>
350Create a new (empty) overlay at the given position with the given 468Create a new (empty) overlay at the given position with the given
351width/height. A border will be put around the box. If either <code>$x</code> or 469width/height. <code>$rstyle</code> defines the initial rendition style
352<code>$y</code> is negative, then this is counted from the right/bottom side, 470(default: <code>OVERLAY_RSTYLE</code>).
353respectively.
354</dd>
355<p></p>
356<dt><strong><a name="item_scr_overlay_off">$term-&gt;scr_overlay_off</a></strong><br />
357</dt>
358<dd> 471</dd>
359Switch the overlay off again.
360</dd> 472<dd>
361<p></p> 473<p>If <code>$border</code> is <code>2</code> (default), then a decorative border will be put
362<dt><strong><a name="item_scr_overlay_set_char">$term-&gt;scr_overlay_set_char ($x, $y, $char, $rend = OVERLAY_RSTYLE)</a></strong><br /> 474around the box.</p>
363</dt>
364<dd> 475</dd>
365Put a single character (specified numerically) at the given overlay
366position.
367</dd> 476<dd>
368<p></p> 477<p>If either <code>$x</code> or <code>$y</code> is negative, then this is counted from the
369<dt><strong><a name="item_scr_overlay_set">$term-&gt;scr_overlay_set ($x, $y, $text)</a></strong><br /> 478right/bottom side, respectively.</p>
370</dt>
371<dd> 479</dd>
372Write a string at the given position into the overlay.
373</dd> 480<dd>
481<p>This method returns an urxvt::overlay object. The overlay will be visible
482as long as the perl object is referenced.</p>
483</dd>
484<dd>
485<p>The methods currently supported on <code>urxvt::overlay</code> objects are:</p>
486</dd>
487<dl>
488<dt><strong><a name="item_set">$overlay-&gt;set ($x, $y, $text, $rend)</a></strong><br />
489</dt>
490<dd>
491Similar to <a href="#item_row_t"><code>$term-&gt;ROW_t</code></a> and <a href="#item_row_r"><code>$term-&gt;ROW_r</code></a> in that it puts
492text in rxvt-unicode's special encoding and an array of rendition values
493at a specific position inside the overlay.
494</dd>
374<p></p> 495<p></p>
496<dt><strong><a name="item_hide">$overlay-&gt;hide</a></strong><br />
497</dt>
498<dd>
499If visible, hide the overlay, but do not destroy it.
500</dd>
501<p></p>
502<dt><strong><a name="item_show">$overlay-&gt;show</a></strong><br />
503</dt>
504<dd>
505If hidden, display the overlay again.
506</dd>
507<p></p></dl>
375<dt><strong><a name="item_strwidth">$cellwidth = $term-&gt;strwidth $string</a></strong><br /> 508<dt><strong><a name="item_strwidth">$cellwidth = $term-&gt;strwidth $string</a></strong><br />
376</dt> 509</dt>
377<dd> 510<dd>
378Returns the number of screen-cells this string would need. Correctly 511Returns the number of screen-cells this string would need. Correctly
379accounts for wide and combining characters. 512accounts for wide and combining characters.
… …
437</dt> 570</dt>
438<dd> 571<dd>
439Returns the text of the entire row with number <code>$row_number</code>. Row <code>0</code> 572Returns the text of the entire row with number <code>$row_number</code>. Row <code>0</code>
440is the topmost terminal line, row <code>$term-&gt;$ncol-1</code> is the bottommost 573is the topmost terminal line, row <code>$term-&gt;$ncol-1</code> is the bottommost
441terminal line. The scrollback buffer starts at line <code>-1</code> and extends to 574terminal line. The scrollback buffer starts at line <code>-1</code> and extends to
442line <a href="#item_nsaved"><code>-$term-&gt;nsaved</code></a>. 575line <a href="#item_nsaved"><code>-$term-&gt;nsaved</code></a>. Nothing will be returned if a nonexistent line
576is requested.
443</dd> 577</dd>
444<dd> 578<dd>
445<p>If <code>$new_text</code> is specified, it will replace characters in the current 579<p>If <code>$new_text</code> is specified, it will replace characters in the current
446line, starting at column <code>$start_col</code> (default <code>0</code>), which is useful 580line, starting at column <code>$start_col</code> (default <code>0</code>), which is useful
447to replace only parts of a line. The font iindex in the rendition will 581to replace only parts of a line. The font index in the rendition will
448automatically be updated.</p> 582automatically be updated.</p>
449</dd> 583</dd>
450<dd> 584<dd>
451<p><code>$text</code> is in a special encoding: tabs and wide characters that use more 585<p><code>$text</code> is in a special encoding: tabs and wide characters that use more
452than one cell when displayed are padded with urxvt::NOCHAR characters 586than one cell when displayed are padded with urxvt::NOCHAR characters
… …
458<p>You have to obey this encoding when changing text. The advantage is 592<p>You have to obey this encoding when changing text. The advantage is
459that <code>substr</code> and similar functions work on screen cells and not on 593that <code>substr</code> and similar functions work on screen cells and not on
460characters.</p> 594characters.</p>
461</dd> 595</dd>
462<dd> 596<dd>
463<p>The methods <a href="#item_special_encode"><code>$term-&gt;special_encode</code></a> and <a href="#item_special_decode"><code>$term-&gt;special_decode</code></a> 597<p>The methods <code>$term-&gt;special_encode</code> and <a href="#item_special_decode"><code>$term-&gt;special_decode</code></a>
464can be used to convert normal strings into this encoding and vice versa.</p> 598can be used to convert normal strings into this encoding and vice versa.</p>
465</dd> 599</dd>
466<p></p> 600<p></p>
467<dt><strong><a name="item_row_r">$rend = $term-&gt;ROW_r ($row_number[, $new_rend[, $start_col]])</a></strong><br /> 601<dt><strong><a name="item_row_r">$rend = $term-&gt;ROW_r ($row_number[, $new_rend[, $start_col]])</a></strong><br />
468</dt> 602</dt>
… …
473</dd> 607</dd>
474<dd> 608<dd>
475<p>When setting rendition, the font mask will be ignored.</p> 609<p>When setting rendition, the font mask will be ignored.</p>
476</dd> 610</dd>
477<dd> 611<dd>
478<p>See the section on RENDITION, below.</p> 612<p>See the section on RENDITION, above.</p>
479</dd> 613</dd>
480<p></p> 614<p></p>
481<dt><strong><a name="item_row_l">$length = $term-&gt;ROW_l ($row_number[, $new_length])</a></strong><br /> 615<dt><strong><a name="item_row_l">$length = $term-&gt;ROW_l ($row_number[, $new_length])</a></strong><br />
482</dt> 616</dt>
483<dd> 617<dd>
484Returns the number of screen cells that are in use (``the line length''). If 618Returns the number of screen cells that are in use (``the line
485it is <code>-1</code>, then the line is part of a multiple-row logical ``line'', which 619length''). Unlike the urxvt core, this returns <a href="#item_ncol"><code>$term-&gt;ncol</code></a> if the
486means all characters are in use and it is continued on the next row. 620line is joined with the following one.
621</dd>
622<p></p>
623<dt><strong><a name="item_is_longer">$bool = $term-&gt;is_longer ($row_number)</a></strong><br />
624</dt>
487</dd> 625<dd>
626Returns true if the row is part of a multiple-row logical ``line'' (i.e.
627joined with the following row), which means all characters are in use
628and it is continued on the next row (and possibly a continuation of the
629previous row(s)).
630</dd>
488<p></p> 631<p></p>
632<dt><strong><a name="item_line">$line = $term-&gt;line ($row_number)</a></strong><br />
633</dt>
634<dd>
635Create and return a new <code>urxvt::line</code> object that stores information
636about the logical line that row <code>$row_number</code> is part of. It supports the
637following methods:
638</dd>
639<dl>
489<dt><strong><a name="item_special_encode">$text = $term-&gt;special_encode $string</a></strong><br /> 640<dt><strong><a name="item_t">$text = $line-&gt;t</a></strong><br />
641</dt>
642<dd>
643Returns the full text of the line, similar to <a href="#item_row_t"><code>ROW_t</code></a>
644</dd>
645<p></p>
646<dt><strong><a name="item_r">$rend = $line-&gt;r</a></strong><br />
647</dt>
648<dd>
649Returns the full rendition array of the line, similar to <a href="#item_row_r"><code>ROW_r</code></a>
650</dd>
651<p></p>
652<dt><strong><a name="item_l">$length = $line-&gt;l</a></strong><br />
653</dt>
654<dd>
655Returns the length of the line in cells, similar to <a href="#item_row_l"><code>ROW_l</code></a>.
656</dd>
657<p></p>
658<dt><strong><a name="item_beg">$rownum = $line-&gt;beg</a></strong><br />
659</dt>
660<dt><strong><a name="item_end">$rownum = $line-&gt;end</a></strong><br />
661</dt>
662<dd>
663Return the row number of the first/last row of the line, respectively.
664</dd>
665<p></p>
666<dt><strong><a name="item_offset_of">$offset = $line-&gt;offset_of ($row, $col)</a></strong><br />
667</dt>
668<dd>
669Returns the character offset of the given row|col pair within the logical
670line.
671</dd>
672<p></p>
673<dt><strong><a name="item_coord_of">($row, $col) = $line-&gt;coord_of ($offset)</a></strong><br />
674</dt>
675<dd>
676Translates a string offset into terminal coordinates again.
677</dd>
678<p></p></dl>
679<dt><strong>($row, $col) = $line-&gt;coord_of ($offset)
680=item $text = $term-&gt;special_encode $string</strong><br />
490</dt> 681</dt>
491<dd> 682<dd>
492Converts a perl string into the special encoding used by rxvt-unicode, 683Converts a perl string into the special encoding used by rxvt-unicode,
493where one character corresponds to one screen cell. See 684where one character corresponds to one screen cell. See
494<a href="#item_row_t"><code>$term-&gt;ROW_t</code></a> for details. 685<a href="#item_row_t"><code>$term-&gt;ROW_t</code></a> for details.
… …
501<a href="#item_row_t"><code>$term-&gt;ROW_t</code></a> for details. 692<a href="#item_row_t"><code>$term-&gt;ROW_t</code></a> for details.
502</dd> 693</dd>
503<p></p></dl> 694<p></p></dl>
504<p> 695<p>
505</p> 696</p>
506<h2><a name="rendition">RENDITION</a></h2>
507<p>Rendition bitsets contain information about colour, font, font styles and
508similar information for each screen cell.</p>
509<p>The following ``macros'' deal with changes in rendition sets. You should
510never just create a bitset, you should always modify an existing one,
511as they contain important information required for correct operation of
512rxvt-unicode.</p>
513<dl>
514<dt><strong><a name="item__24rend__3d_urxvt_3a_3adefault_rstyle">$rend = urxvt::DEFAULT_RSTYLE</a></strong><br />
515</dt>
516<dd>
517Returns the default rendition, as used when the terminal is starting up or
518being reset. Useful as a base
519</dd>
520<p></p></dl>
521<p>
522</p>
523<h2><a name="the_urxvt__timer_class">The <code>urxvt::timer</code> Class</a></h2> 697<h2><a name="the_urxvt__timer_class">The <code>urxvt::timer</code> Class</a></h2>
524<p>This class implements timer watchers/events. Time is represented as a 698<p>This class implements timer watchers/events. Time is represented as a
525fractional number of seconds since the epoch. Example:</p> 699fractional number of seconds since the epoch. Example:</p>
526<pre> 700<pre>
527 # create a digital clock display in upper right corner 701 $term-&gt;{overlay} = $term-&gt;overlay (-1, 0, 8, 1, urxvt::OVERLAY_RSTYLE, 0);
528 $term-&gt;{timer} = urxvt::timer 702 $term-&gt;{timer} = urxvt::timer
529 -&gt;new 703 -&gt;new
530 -&gt;start (urxvt::NOW) 704 -&gt;interval (1)
531 -&gt;cb (sub { 705 -&gt;cb (sub {
532 my ($timer) = @_;
533 my $time = $timer-&gt;at;
534 $timer-&gt;start ($time + 1);
535 $self-&gt;scr_overlay (-1, 0, 706 $term-&gt;{overlay}-&gt;set (0, 0,
536 POSIX::strftime &quot;%H:%M:%S&quot;, localtime $time); 707 sprintf &quot;%2d:%02d:%02d&quot;, (localtime urxvt::NOW)[2,1,0]);
537 });</pre> 708 });</pre>
538<dl> 709<dl>
539<dt><strong><a name="item__24timer__3d_new_urxvt_3a_3atimer">$timer = new urxvt::timer</a></strong><br /> 710<dt><strong><a name="item__24timer__3d_new_urxvt_3a_3atimer">$timer = new urxvt::timer</a></strong><br />
540</dt> 711</dt>
541<dd> 712<dd>
542Create a new timer object in stopped state. 713Create a new timer object in started state. It is scheduled to fire
714immediately.
543</dd> 715</dd>
544<p></p> 716<p></p>
545<dt><strong><a name="item_cb">$timer = $timer-&gt;cb (sub { my ($timer) = @_; ... })</a></strong><br /> 717<dt><strong><a name="item_cb">$timer = $timer-&gt;cb (sub { my ($timer) = @_; ... })</a></strong><br />
546</dt> 718</dt>
547<dd> 719<dd>
… …
552</dt> 724</dt>
553<dd> 725<dd>
554Return the time this watcher will fire next. 726Return the time this watcher will fire next.
555</dd> 727</dd>
556<p></p> 728<p></p>
557<dt><strong><a name="item_set">$timer = $timer-&gt;set ($tstamp)</a></strong><br /> 729<dt><strong>$timer = $timer-&gt;set ($tstamp)</strong><br />
558</dt> 730</dt>
559<dd> 731<dd>
560Set the time the event is generated to $tstamp. 732Set the time the event is generated to $tstamp.
733</dd>
734<p></p>
735<dt><strong><a name="item_interval">$timer = $timer-&gt;interval ($interval)</a></strong><br />
736</dt>
737<dd>
738Normally (and when <code>$interval</code> is <code>0</code>), the timer will automatically
739stop after it has fired once. If <code>$interval</code> is non-zero, then the timer
740is automatically rescheduled at the given intervals.
561</dd> 741</dd>
562<p></p> 742<p></p>
563<dt><strong><a name="item_start">$timer = $timer-&gt;start</a></strong><br /> 743<dt><strong><a name="item_start">$timer = $timer-&gt;start</a></strong><br />
564</dt> 744</dt>
565<dd> 745<dd>

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