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Revision 1.35 by root, Fri Jan 6 01:27:27 2006 UTC vs.
Revision 1.121 by root, Fri Jan 20 22:49:34 2006 UTC

…		…
17		17
18	@@RXVT_NAME@@ --perl-lib $HOME -pe grab_test	18	@@RXVT_NAME@@ --perl-lib $HOME -pe grab_test
19		19
20	=head1 DESCRIPTION	20	=head1 DESCRIPTION
21		21
22	Everytime a terminal object gets created, scripts specified via the	22	Everytime a terminal object gets created, extension scripts specified via
23	C<perl> resource are loaded and associated with it.	23	the C<perl> resource are loaded and associated with it.
24		24
25	Scripts are compiled in a 'use strict' and 'use utf8' environment, and	25	Scripts are compiled in a 'use strict' and 'use utf8' environment, and
26	thus must be encoded as UTF-8.	26	thus must be encoded as UTF-8.
27		27
28	Each script will only ever be loaded once, even in @@RXVT_NAME@@d, where	28	Each script will only ever be loaded once, even in @@RXVT_NAME@@d, where
29	scripts will be shared (but not enabled) for all terminals.	29	scripts will be shared (but not enabled) for all terminals.
30		30
31	=head2 Prepackaged Extensions	31	=head1 PREPACKAGED EXTENSIONS
32		32
33	This section describes the extensiosn delivered with this version. You can	33	This section describes the extensions delivered with this release. You can
34	find them in F<@@RXVT_LIBDIR@@/urxvt/perl/>.	34	find them in F<@@RXVT_LIBDIR@@/urxvt/perl/>.
35		35
36	You can activate them like this:	36	You can activate them like this:
37		37
38	@@RXVT_NAME@@ -pe <extensionname>	38	@@RXVT_NAME@@ -pe <extensionname>
39		39
		40	Or by adding them to the resource for extensions loaded by default:
		41
		42	URxvt.perl-ext-common: default,automove-background,selection-autotransform
		43
40	=over 4	44	=over 4
41		45
42	=item selection	46	=item selection (enabled by default)
43		47
44	Intelligent selection. This extension tries to be more intelligent when	48	(More) intelligent selection. This extension tries to be more intelligent
45	the user extends selections (double-click). Right now, it tries to select	49	when the user extends selections (double-click and further clicks). Right
46	urls and complete shell-quoted arguments, which is very convenient, too,	50	now, it tries to select words, urls and complete shell-quoted
47	if your F<ls> supports C<--quoting-style=shell>.	51	arguments, which is very convenient, too, if your F<ls> supports
		52	C<--quoting-style=shell>.
48		53
49	It also offers the following bindable event:	54	A double-click usually selects the word under the cursor, further clicks
		55	will enlarge the selection.
		56
		57	The selection works by trying to match a number of regexes and displaying
		58	them in increasing order of length. You can add your own regexes by
		59	specifying resources of the form:
		60
		61	URxvt.selection.pattern-0: perl-regex
		62	URxvt.selection.pattern-1: perl-regex
		63	...
		64
		65	The index number (0, 1...) must not have any holes, and each regex must
		66	contain at least one pair of capturing parentheses, which will be used for
		67	the match. For example, the followign adds a regex that matches everything
		68	between two vertical bars:
		69
		70	URxvt.selection.pattern-0: \\|([^|]+)\\|
		71
		72	You can look at the source of the selection extension to see more
		73	interesting uses, such as parsing a line from beginning to end.
		74
		75	This extension also offers following bindable keyboard commands:
50		76
51	=over 4	77	=over 4
52		78
53	=item rot13	79	=item rot13
54		80
…		…
56		82
57	URxvt.keysym.C-M-r: perl:selection:rot13	83	URxvt.keysym.C-M-r: perl:selection:rot13
58		84
59	=back	85	=back
60		86
		87	=item option-popup (enabled by default)
		88
		89	Binds a popup menu to Ctrl-Button2 that lets you toggle (some) options at
		90	runtime.
		91
		92	=item selection-popup (enabled by default)
		93
		94	Binds a popup menu to Ctrl-Button3 that lets you convert the selection
		95	text into various other formats/action (such as uri unescaping, perl
		96	evaluation, web-browser starting etc.), depending on content.
		97
		98	Other extensions can extend this popup menu by pushing a code reference
		99	onto C<@{ $term->{selection_popup_hook} }>, that is called whenever the
		100	popup is displayed.
		101
		102	It's sole argument is the popup menu, which can be modified. The selection
		103	is in C<$_>, which can be used to decide wether to add something or not.
		104	It should either return nothing or a string and a code reference. The
		105	string will be used as button text and the code reference will be called
		106	when the button gets activated and should transform C<$_>.
		107
		108	The following will add an entry C<a to b> that transforms all C<a>s in
		109	the selection to C<b>s, but only if the selection currently contains any
		110	C<a>s:
		111
		112	push @{ $self->{term}{selection_popup_hook} }, sub {
		113	/a/ ? ("a to be" => sub { s/a/b/g }
		114	: ()
		115	};
		116
		117	=item searchable-scrollback<hotkey> (enabled by default)
		118
		119	Adds regex search functionality to the scrollback buffer, triggered
		120	by a hotkey (default: C<M-s>). While in search mode, normal terminal
		121	input/output is suspended and a regex is displayed at the bottom of the
		122	screen.
		123
		124	Inputting characters appends them to the regex and continues incremental
		125	search. C<BackSpace> removes a character from the regex, C<Up> and C<Down>
		126	search upwards/downwards in the scrollback buffer, C<End> jumps to the
		127	bottom. C<Escape> leaves search mode and returns to the point where search
		128	was started, while C<Enter> or C<Return> stay at the current position and
		129	additionally stores the first match in the current line into the primary
		130	selection.
		131
		132	=item selection-autotransform
		133
		134	This selection allows you to do automatic transforms on a selection
		135	whenever a selection is made.
		136
		137	It works by specifying perl snippets (most useful is a single C<s///>
		138	operator) that modify C<$_> as resources:
		139
		140	URxvt.selection-autotransform.0: transform
		141	URxvt.selection-autotransform.1: transform
		142	...
		143
		144	For example, the following will transform selections of the form
		145	C<filename:number>, often seen in compiler messages, into C<vi +$filename
		146	$word>:
		147
		148	URxvt.selection-autotransform.0: s/^([^:[:space:]]+):(\\d+):?$/vi +$2 \\Q$1\\E\\x0d/
		149
		150	And this example matches the same,but replaces it with vi-commands you can
		151	paste directly into your (vi :) editor:
		152
		153	URxvt.selection-autotransform.0: s/^([^:[:space:]]+(\\d+):?$/:e \\Q$1\\E\\x0d:$2\\x0d/
		154
		155	Of course, this can be modified to suit your needs and your editor :)
		156
		157	To expand the example above to typical perl error messages ("XXX at
		158	FILENAME line YYY."), you need a slightly more elaborate solution:
		159
		160	URxvt.selection.pattern-0: ( at .*? line \\d+[,.])
		161	URxvt.selection-autotransform.0: s/^ at (.*?) line (\\d+)[,.]$/:e \\Q$1\E\\x0d:$2\\x0d/
		162
		163	The first line tells the selection code to treat the unchanging part of
		164	every error message as a selection pattern, and the second line transforms
		165	the message into vi commands to load the file.
		166
		167	=item readline
		168
		169	A support package that tries to make editing with readline easier. At the
		170	moment, it reacts to clicking with the left mouse button by trying to
		171	move the text cursor to this position. It does so by generating as many
		172	cursor-left or cursor-right keypresses as required (the this only works
		173	for programs that correctly support wide characters).
		174
		175	It only works when clicking into the same line (possibly extended over
		176	multiple rows) as the text cursor and on the primary screen, to reduce the
		177	risk of misinterpreting. The normal selection isn't disabled, so quick
		178	successive clicks might interfere with selection creation in harmless
		179	ways.
		180
		181	=item tabbed
		182
		183	This transforms the terminal into a tabbar with additional terminals, that
		184	is, it implements what is commonly refered to as "tabbed terminal". The topmost line
		185	displays a "[NEW]" button, which, when clicked, will add a new tab, followed by one
		186	button per tab.
		187
		188	Clicking a button will activate that tab. Pressing B<Shift-Left> and
		189	B<Shift-Right> will switch to the tab left or right of the current one,
		190	while B<Shift-Down> creates a new tab.
		191
		192	=item mark-urls
		193
		194	Uses per-line display filtering (C<on_line_update>) to underline urls and
		195	make them clickable. When middle-clicked, the program specified in the
		196	resource C<urlLauncher> (default C<x-www-browser>) will be started with
		197	the URL as first argument.
		198
		199	=item automove-background
		200
		201	This is basically a one-line extension that dynamically changes the background pixmap offset
		202	to the window position, in effect creating the same effect as pseudo transparency with
		203	a custom pixmap. No scaling is supported in this mode. Exmaple:
		204
		205	@@RXVT_NAME@@ -pixmap background.xpm -pe automove-background
		206
		207	=item block-graphics-to-ascii
		208
		209	A not very useful example of filtering all text output to the terminal,
		210	by replacing all line-drawing characters (U+2500 .. U+259F) by a
		211	similar-looking ascii character.
		212
61	=item digital-clock	213	=item digital-clock
62		214
63	Displays a digital clock using the built-in overlay.	215	Displays a digital clock using the built-in overlay.
64
65	=item mark-urls
66
67	Uses per-line filtering (C<on_line_update>) to underline urls.
68		216
69	=item example-refresh-hooks	217	=item example-refresh-hooks
70		218
71	Displays a very simple digital clock in the upper right corner of the	219	Displays a very simple digital clock in the upper right corner of the
72	window. Illustrates overwriting the refresh callbacks to create your own	220	window. Illustrates overwriting the refresh callbacks to create your own
73	overlays or changes.	221	overlays or changes.
74		222
75	=item example-filter-input	223	=item selection-pastebin
76		224
77	A not very useful example of filtering all text output to the terminal, by	225	This is a little rarely useful extension that Uploads the selection as
78	underlining all urls that matches a certain regex (i.e. some urls :). It	226	textfile to a remote site (or does other things). (The implementation is
79	is not very useful because urls that are output in multiple steps (e.g.	227	not currently secure for use in a multiuser environment as it writes to
80	when typing them) do not get marked.	228	F</tmp> directly.).
		229
		230	It listens to the C<selection-pastebin:remote-pastebin> keyboard command,
		231	i.e.
		232
		233	URxvt.keysym.C-M-e: perl:selection-pastebin:remote-pastebin
		234
		235	Pressing this combination runs a command with C<%> replaced by the name of
		236	the textfile. This command can be set via a resource:
		237
		238	URxvt.selection-pastebin.cmd: rsync -apP % ruth:/var/www/www.ta-sa.org/files/txt/.
		239
		240	And the default is likely not useful to anybody but the few people around
		241	here :)
		242
		243	The name of the textfile is the hex encoded md5 sum of the selection, so
		244	the same content should lead to the same filename.
		245
		246	After a successful upload the selection will be replaced by the text given
		247	in the C<selection-pastebin-url> resource (again, the % is the placeholder
		248	for the filename):
		249
		250	URxvt.selection-pastebin.url: http://www.ta-sa.org/files/txt/%
81		251
82	=back	252	=back
		253
		254	=head1 API DOCUMENTATION
83		255
84	=head2 General API Considerations	256	=head2 General API Considerations
85		257
86	All objects (such as terminals, time watchers etc.) are typical	258	All objects (such as terminals, time watchers etc.) are typical
87	reference-to-hash objects. The hash can be used to store anything you	259	reference-to-hash objects. The hash can be used to store anything you
…		…
100	=over 4	272	=over 4
101		273
102	=item $text	274	=item $text
103		275
104	Rxvt-unicodes special way of encoding text, where one "unicode" character	276	Rxvt-unicodes special way of encoding text, where one "unicode" character
105	always represents one screen cell. See L<row_t> for a discussion of this format.	277	always represents one screen cell. See L<ROW_t> for a discussion of this format.
106		278
107	=item $string	279	=item $string
108		280
109	A perl text string, with an emphasis on I<text>. It can store all unicode	281	A perl text string, with an emphasis on I<text>. It can store all unicode
110	characters and is to be distinguished with text encoded in a specific	282	characters and is to be distinguished with text encoded in a specific
…		…
115	Either binary data or - more common - a text string encoded in a	287	Either binary data or - more common - a text string encoded in a
116	locale-specific way.	288	locale-specific way.
117		289
118	=back	290	=back
119		291
		292	=head2 Extension Objects
		293
		294	Very perl extension is a perl class. A separate perl object is created
		295	for each terminal and each extension and passed as the first parameter to
		296	hooks. So extensions can use their C<$self> object without having to think
		297	about other extensions, with the exception of methods and members that
		298	begin with an underscore character C<_>: these are reserved for internal
		299	use.
		300
		301	Although it isn't a C<urxvt::term> object, you can call all methods of the
		302	C<urxvt::term> class on this object.
		303
		304	It has the following methods and data members:
		305
		306	=over 4
		307
		308	=item $urxvt_term = $self->{term}
		309
		310	Returns the C<urxvt::term> object associated with this instance of the
		311	extension. This member I<must not> be changed in any way.
		312
		313	=item $self->enable ($hook_name => $cb, [$hook_name => $cb..])
		314
		315	Dynamically enable the given hooks (named without the C<on_> prefix) for
		316	this extension, replacing any previous hook. This is useful when you want
		317	to overwrite time-critical hooks only temporarily.
		318
		319	=item $self->disable ($hook_name[, $hook_name..])
		320
		321	Dynamically disable the given hooks.
		322
		323	=back
		324
120	=head2 Hooks	325	=head2 Hooks
121		326
122	The following subroutines can be declared in loaded scripts, and will be	327	The following subroutines can be declared in extension files, and will be
123	called whenever the relevant event happens.	328	called whenever the relevant event happens.
124		329
125	The first argument passed to them is an object private to each terminal	330	The first argument passed to them is an extension oject as described in
126	and extension package. You can call all C<urxvt::term> methods on it, but	331	the in the C<Extension Objects> section.
127	its not a real C<urxvt::term> object. Instead, the real C<urxvt::term>
128	object that is shared between all packages is stored in the C<term>
129	member.
130		332
131	All of them must return a boolean value. If it is true, then the event	333	B<All> of these hooks must return a boolean value. If any of the called
132	counts as being I<consumed>, and the invocation of other hooks is skipped,	334	hooks returns true, then the event counts as being I<consumed>, and the
133	and the relevant action might not be carried out by the C++ code.	335	relevant action might not be carried out by the C++ code.
134		336
135	When in doubt, return a false value (preferably C<()>).	337	I<< When in doubt, return a false value (preferably C<()>). >>
136		338
137	=over 4	339	=over 4
138		340
139	=item on_init $term	341	=item on_init $term
140		342
141	Called after a new terminal object has been initialized, but before	343	Called after a new terminal object has been initialized, but before
142	windows are created or the command gets run.	344	windows are created or the command gets run. Most methods are unsafe to
		345	call or deliver senseless data, as terminal size and other characteristics
		346	have not yet been determined. You can safely query and change resources
		347	and options, though. For many purposes the C<on_start> hook is a better
		348	place.
		349
		350	=item on_start $term
		351
		352	Called at the very end of initialisation of a new terminal, just before
		353	trying to map (display) the toplevel and returning to the mainloop.
		354
		355	=item on_destroy $term
		356
		357	Called whenever something tries to destroy terminal, before doing anything
		358	yet. If this hook returns true, then destruction is skipped, but this is
		359	rarely a good idea.
143		360
144	=item on_reset $term	361	=item on_reset $term
145		362
146	Called after the screen is "reset" for any reason, such as resizing or	363	Called after the screen is "reset" for any reason, such as resizing or
147	control sequences. Here is where you can react on changes to size-related	364	control sequences. Here is where you can react on changes to size-related
148	variables.	365	variables.
149		366
150	=item on_start $term	367	=item on_child_start $term, $pid
151		368
152	Called at the very end of initialisation of a new terminal, just before	369	Called just after the child process has been C<fork>ed.
153	returning to the mainloop.	370
		371	=item on_child_exit $term, $status
		372
		373	Called just after the child process has exited. C<$status> is the status
		374	from C<waitpid>.
154		375
155	=item on_sel_make $term, $eventtime	376	=item on_sel_make $term, $eventtime
156		377
157	Called whenever a selection has been made by the user, but before the	378	Called whenever a selection has been made by the user, but before the
158	selection text is copied, so changes to the beginning, end or type of the	379	selection text is copied, so changes to the beginning, end or type of the
…		…
172	=item on_sel_extend $term	393	=item on_sel_extend $term
173		394
174	Called whenever the user tries to extend the selection (e.g. with a double	395	Called whenever the user tries to extend the selection (e.g. with a double
175	click) and is either supposed to return false (normal operation), or	396	click) and is either supposed to return false (normal operation), or
176	should extend the selection itelf and return true to suppress the built-in	397	should extend the selection itelf and return true to suppress the built-in
177	processing.	398	processing. This can happen multiple times, as long as the callback
		399	returns true, it will be called on every further click by the user and is
		400	supposed to enlarge the selection more and more, if possible.
178		401
179	See the F<selection> example extension.	402	See the F<selection> example extension.
180
181	=item on_focus_in $term
182
183	Called whenever the window gets the keyboard focus, before urxvt does
184	focus in processing.
185
186	=item on_focus_out $term
187
188	Called wheneever the window loses keyboard focus, before urxvt does focus
189	out processing.
190		403
191	=item on_view_change $term, $offset	404	=item on_view_change $term, $offset
192		405
193	Called whenever the view offset changes, i..e the user or program	406	Called whenever the view offset changes, i..e the user or program
194	scrolls. Offset C<0> means display the normal terminal, positive values	407	scrolls. Offset C<0> means display the normal terminal, positive values
…		…
201	than the scroll back buffer or the terminal.	414	than the scroll back buffer or the terminal.
202		415
203	It is called before lines are scrolled out (so rows 0 .. min ($lines - 1,	416	It is called before lines are scrolled out (so rows 0 .. min ($lines - 1,
204	$nrow - 1) represent the lines to be scrolled out). C<$saved> is the total	417	$nrow - 1) represent the lines to be scrolled out). C<$saved> is the total
205	number of lines that will be in the scrollback buffer.	418	number of lines that will be in the scrollback buffer.
206
207	=item on_tty_activity $term *NYI*
208
209	Called whenever the program(s) running in the urxvt window send output.
210		419
211	=item on_osc_seq $term, $string	420	=item on_osc_seq $term, $string
212		421
213	Called whenever the B<ESC ] 777 ; string ST> command sequence (OSC =	422	Called whenever the B<ESC ] 777 ; string ST> command sequence (OSC =
214	operating system command) is processed. Cursor position and other state	423	operating system command) is processed. Cursor position and other state
…		…
227	can filter/change and output the text yourself by returning a true value	436	can filter/change and output the text yourself by returning a true value
228	and calling C<< $term->scr_add_lines >> yourself. Please note that this	437	and calling C<< $term->scr_add_lines >> yourself. Please note that this
229	might be very slow, however, as your hook is called for B<all> text being	438	might be very slow, however, as your hook is called for B<all> text being
230	output.	439	output.
231		440
		441	=item on_tt_write $term, $octets
		442
		443	Called whenever some data is written to the tty/pty and can be used to
		444	suppress or filter tty input.
		445
232	=item on_line_update $term, $row	446	=item on_line_update $term, $row
233		447
234	Called whenever a line was updated or changed. Can be used to filter	448	Called whenever a line was updated or changed. Can be used to filter
235	screen output (e.g. underline urls or other useless stuff). Only lines	449	screen output (e.g. underline urls or other useless stuff). Only lines
236	that are being shown will be filtered, and, due to performance reasons,	450	that are being shown will be filtered, and, due to performance reasons,
…		…
258		472
259	Called whenever the user presses a key combination that has a	473	Called whenever the user presses a key combination that has a
260	C<perl:string> action bound to it (see description of the B<keysym>	474	C<perl:string> action bound to it (see description of the B<keysym>
261	resource in the @@RXVT_NAME@@(1) manpage).	475	resource in the @@RXVT_NAME@@(1) manpage).
262		476
		477	=item on_x_event $term, $event
		478
		479	Called on every X event received on the vt window (and possibly other
		480	windows). Should only be used as a last resort. Most event structure
		481	members are not passed.
		482
		483	=item on_focus_in $term
		484
		485	Called whenever the window gets the keyboard focus, before rxvt-unicode
		486	does focus in processing.
		487
		488	=item on_focus_out $term
		489
		490	Called wheneever the window loses keyboard focus, before rxvt-unicode does
		491	focus out processing.
		492
		493	=item on_configure_notify $term, $event
		494
		495	=item on_property_notify $term, $event
		496
		497	=item on_key_press $term, $event, $keysym, $octets
		498
		499	=item on_key_release $term, $event, $keysym
		500
		501	=item on_button_press $term, $event
		502
		503	=item on_button_release $term, $event
		504
		505	=item on_motion_notify $term, $event
		506
		507	=item on_map_notify $term, $event
		508
		509	=item on_unmap_notify $term, $event
		510
		511	Called whenever the corresponding X event is received for the terminal If
		512	the hook returns true, then the even will be ignored by rxvt-unicode.
		513
		514	The event is a hash with most values as named by Xlib (see the XEvent
		515	manpage), with the additional members C<row> and C<col>, which are the
		516	(real, not screen-based) row and column under the mouse cursor.
		517
		518	C<on_key_press> additionally receives the string rxvt-unicode would
		519	output, if any, in locale-specific encoding.
		520
		521	subwindow.
		522
		523	=item on_client_message $term, $event
		524
		525	=item on_wm_protocols $term, $event
		526
		527	=item on_wm_delete_window $term, $event
		528
		529	Called when various types of ClientMessage events are received (all with
		530	format=32, WM_PROTOCOLS or WM_PROTOCOLS:WM_DELETE_WINDOW).
		531
263	=back	532	=back
264		533
		534	=cut
		535
		536	package urxvt;
		537
		538	use utf8;
		539	use strict;
		540	use Carp ();
		541	use Scalar::Util ();
		542	use List::Util ();
		543
		544	our $VERSION = 1;
		545	our $TERM;
		546	our @TERM_INIT;
		547	our @TERM_EXT;
		548	our @HOOKNAME;
		549	our %HOOKTYPE = map +($HOOKNAME[$_] => $_), 0..$#HOOKNAME;
		550	our %OPTION;
		551
		552	our $LIBDIR;
		553	our $RESNAME;
		554	our $RESCLASS;
		555	our $RXVTNAME;
		556
		557	our $NOCHAR = chr 0xfffe;
		558
265	=head2 Variables in the C<urxvt> Package	559	=head2 Variables in the C<urxvt> Package
266		560
267	=over 4	561	=over 4
268		562
		563	=item $urxvt::LIBDIR
		564
		565	The rxvt-unicode library directory, where, among other things, the perl
		566	modules and scripts are stored.
		567
		568	=item $urxvt::RESCLASS, $urxvt::RESCLASS
		569
		570	The resource class and name rxvt-unicode uses to look up X resources.
		571
		572	=item $urxvt::RXVTNAME
		573
		574	The basename of the installed binaries, usually C<urxvt>.
		575
269	=item $urxvt::TERM	576	=item $urxvt::TERM
270		577
271	The current terminal. Whenever a callback/Hook is bein executed, this	578	The current terminal. This variable stores the current C<urxvt::term>
272	variable stores the current C<urxvt::term> object.	579	object, whenever a callback/hook is executing.
		580
		581	=item @urxvt::TERM_INIT
		582
		583	All coderefs in this array will be called as methods of the next newly
		584	created C<urxvt::term> object (during the C<on_init> phase). The array
		585	gets cleared before the codereferences that were in it are being executed,
		586	so coderefs can push themselves onto it again if they so desire.
		587
		588	This complements to the perl-eval commandline option, but gets executed
		589	first.
		590
		591	=item @urxvt::TERM_EXT
		592
		593	Works similar to C<@TERM_INIT>, but contains perl package/class names, which
		594	get registered as normal extensions after calling the hooks in C<@TERM_INIT>
		595	but before other extensions. Gets cleared just like C<@TERM_INIT>.
273		596
274	=back	597	=back
275		598
276	=head2 Functions in the C<urxvt> Package	599	=head2 Functions in the C<urxvt> Package
277		600
…		…
290	that calls this function.	613	that calls this function.
291		614
292	Using this function has the advantage that its output ends up in the	615	Using this function has the advantage that its output ends up in the
293	correct place, e.g. on stderr of the connecting urxvtc client.	616	correct place, e.g. on stderr of the connecting urxvtc client.
294		617
		618	Messages have a size limit of 1023 bytes currently.
		619
295	=item $time = urxvt::NOW	620	=item $time = urxvt::NOW
296		621
297	Returns the "current time" (as per the event loop).	622	Returns the "current time" (as per the event loop).
		623
		624	=item urxvt::CurrentTime
		625
		626	=item urxvt::ShiftMask, LockMask, ControlMask, Mod1Mask, Mod2Mask,
		627	Mod3Mask, Mod4Mask, Mod5Mask, Button1Mask, Button2Mask, Button3Mask,
		628	Button4Mask, Button5Mask, AnyModifier
		629
		630	=item urxvt::NoEventMask, KeyPressMask, KeyReleaseMask,
		631	ButtonPressMask, ButtonReleaseMask, EnterWindowMask, LeaveWindowMask,
		632	PointerMotionMask, PointerMotionHintMask, Button1MotionMask, Button2MotionMask,
		633	Button3MotionMask, Button4MotionMask, Button5MotionMask, ButtonMotionMask,
		634	KeymapStateMask, ExposureMask, VisibilityChangeMask, StructureNotifyMask,
		635	ResizeRedirectMask, SubstructureNotifyMask, SubstructureRedirectMask,
		636	FocusChangeMask, PropertyChangeMask, ColormapChangeMask, OwnerGrabButtonMask
		637
		638	=item urxvt::KeyPress, KeyRelease, ButtonPress, ButtonRelease, MotionNotify,
		639	EnterNotify, LeaveNotify, FocusIn, FocusOut, KeymapNotify, Expose,
		640	GraphicsExpose, NoExpose, VisibilityNotify, CreateNotify, DestroyNotify,
		641	UnmapNotify, MapNotify, MapRequest, ReparentNotify, ConfigureNotify,
		642	ConfigureRequest, GravityNotify, ResizeRequest, CirculateNotify,
		643	CirculateRequest, PropertyNotify, SelectionClear, SelectionRequest,
		644	SelectionNotify, ColormapNotify, ClientMessage, MappingNotify
		645
		646	Various constants for use in X calls and event processing.
298		647
299	=back	648	=back
300		649
301	=head2 RENDITION	650	=head2 RENDITION
302		651
…		…
329		678
330	=item $background = urxvt::GET_BASEBG $rend	679	=item $background = urxvt::GET_BASEBG $rend
331		680
332	Return the foreground/background colour index, respectively.	681	Return the foreground/background colour index, respectively.
333		682
334	=item $rend = urxvt::SET_FGCOLOR ($rend, $new_colour)	683	=item $rend = urxvt::SET_FGCOLOR $rend, $new_colour
335		684
336	=item $rend = urxvt::SET_BGCOLOR ($rend, $new_colour)	685	=item $rend = urxvt::SET_BGCOLOR $rend, $new_colour
337		686
338	Replace the foreground/background colour in the rendition mask with the	687	Replace the foreground/background colour in the rendition mask with the
339	specified one.	688	specified one.
340		689
341	=item $value = urxvt::GET_CUSTOM ($rend)	690	=item $value = urxvt::GET_CUSTOM $rend
342		691
343	Return the "custom" value: Every rendition has 5 bits for use by	692	Return the "custom" value: Every rendition has 5 bits for use by
344	extensions. They can be set and changed as you like and are initially	693	extensions. They can be set and changed as you like and are initially
345	zero.	694	zero.
346		695
347	=item $rend = urxvt::SET_CUSTOM ($rend, $new_value)	696	=item $rend = urxvt::SET_CUSTOM $rend, $new_value
348		697
349	Change the custom value.	698	Change the custom value.
350		699
351	=back	700	=back
352		701
353	=cut	702	=cut
354		703
355	package urxvt;
356
357	use strict;
358	use Scalar::Util ();
359
360	our $TERM;
361	our @HOOKNAME;
362	our $LIBDIR;
363
364	BEGIN {	704	BEGIN {
365	urxvt->bootstrap;
366
367	# overwrite perl's warn	705	# overwrite perl's warn
368	*CORE::GLOBAL::warn = sub {	706	*CORE::GLOBAL::warn = sub {
369	my $msg = join "", @_;	707	my $msg = join "", @_;
370	$msg .= "\n"	708	$msg .= "\n"
371	unless $msg =~ /\n$/;	709	unless $msg =~ /\n$/;
372	urxvt::warn ($msg);	710	urxvt::warn ($msg);
373	};	711	};
374	}	712	}
375		713
376	my @hook_count;
377	my $verbosity = $ENV{URXVT_PERL_VERBOSITY};	714	my $verbosity = $ENV{URXVT_PERL_VERBOSITY};
378		715
379	sub verbose {	716	sub verbose {
380	my ($level, $msg) = @_;	717	my ($level, $msg) = @_;
381	warn "$msg\n" if $level <= $verbosity;	718	warn "$msg\n" if $level <= $verbosity;
382	}	719	}
383		720
384	# find on_xxx subs in the package and register them	721	my %extension_pkg;
385	# as hooks
386	sub register_package($) {
387	my ($pkg) = @_;
388
389	for my $htype (0.. $#HOOKNAME) {
390	my $name = $HOOKNAME[$htype];
391
392	my $ref = $pkg->can ("on_" . lc $name)
393	or next;
394
395	$TERM->{_hook}[$htype]{$pkg} = $ref;
396	$hook_count[$htype]++
397	or set_should_invoke $htype, 1;
398	}
399	}
400
401	my $script_pkg = "script0000";
402	my %script_pkg;
403		722
404	# load a single script into its own package, once only	723	# load a single script into its own package, once only
405	sub script_package($) {	724	sub extension_package($) {
406	my ($path) = @_;	725	my ($path) = @_;
407		726
408	$script_pkg{$path} ||= do {	727	$extension_pkg{$path} ||= do {
409	my $pkg = "urxvt::" . ($script_pkg++);	728	$path =~ /([^\/\\]+)$/;
		729	my $pkg = $1;
		730	$pkg =~ s/[^[:word:]]/_/g;
		731	$pkg = "urxvt::ext::$pkg";
410		732
411	verbose 3, "loading script '$path' into package '$pkg'";	733	verbose 3, "loading extension '$path' into package '$pkg'";
412		734
413	open my $fh, "<:raw", $path	735	open my $fh, "<:raw", $path
414	or die "$path: $!";	736	or die "$path: $!";
415		737
		738	my $source =
416	my $source = "package $pkg; use strict; use utf8;\n"	739	"package $pkg; use strict; use utf8;\n"
417	. "#line 1 \"$path\"\n{\n"	740	. "#line 1 \"$path\"\n{\n"
418	. (do { local $/; <$fh> })	741	. (do { local $/; <$fh> })
419	. "\n};\n1";	742	. "\n};\n1";
420		743
		744	eval $source
421	eval $source or die "$path: $@";	745	or die "$path: $@";
422		746
423	$pkg	747	$pkg
424	}	748	}
425	}	749	}
426		750
…		…
431	local $TERM = shift;	755	local $TERM = shift;
432	my $htype = shift;	756	my $htype = shift;
433		757
434	if ($htype == 0) { # INIT	758	if ($htype == 0) { # INIT
435	my @dirs = ((split /:/, $TERM->resource ("perl_lib")), "$LIBDIR/perl");	759	my @dirs = ((split /:/, $TERM->resource ("perl_lib")), "$LIBDIR/perl");
		760
		761	my %ext_arg;
436		762
		763	{
		764	my @init = @TERM_INIT;
		765	@TERM_INIT = ();
		766	$_->($TERM) for @init;
		767	my @pkg = @TERM_EXT;
		768	@TERM_EXT = ();
		769	$TERM->register_package ($_) for @pkg;
		770	}
		771
437	for my $ext (map { split /:/, $TERM->resource ("perl_ext_$_") } 1, 2) {	772	for (grep $_, map { split /,/, $TERM->resource ("perl_ext_$_") } 1, 2) {
		773	if ($_ eq "default") {
		774	$ext_arg{$_} ||= [] for qw(selection option-popup selection-popup searchable-scrollback);
		775	} elsif (/^-(.*)$/) {
		776	delete $ext_arg{$1};
		777	} elsif (/^([^<]+)<(.*)>$/) {
		778	push @{ $ext_arg{$1} }, $2;
		779	} else {
		780	$ext_arg{$_} ||= [];
		781	}
		782	}
		783
		784	while (my ($ext, $argv) = each %ext_arg) {
438	my @files = grep -f $_, map "$_/$ext", @dirs;	785	my @files = grep -f $_, map "$_/$ext", @dirs;
439		786
440	if (@files) {	787	if (@files) {
441	register_package script_package $files[0];	788	$TERM->register_package (extension_package $files[0], $argv);
442	} else {	789	} else {
443	warn "perl extension '$ext' not found in perl library search path\n";	790	warn "perl extension '$ext' not found in perl library search path\n";
444	}	791	}
445	}	792	}
		793
		794	eval "#line 1 \"--perl-eval resource/argument\"\n" . $TERM->resource ("perl_eval");
		795	warn $@ if $@;
446	}	796	}
447		797
448	$retval = undef;	798	$retval = undef;
449		799
450	if (my $cb = $TERM->{_hook}[$htype]) {	800	if (my $cb = $TERM->{_hook}[$htype]) {
…		…
452	if $verbosity >= 10;	802	if $verbosity >= 10;
453		803
454	keys %$cb;	804	keys %$cb;
455		805
456	while (my ($pkg, $cb) = each %$cb) {	806	while (my ($pkg, $cb) = each %$cb) {
457	$retval = $cb->(	807	my $retval_ = eval { $cb->($TERM->{_pkg}{$pkg}, @_) };
458	$TERM->{_pkg}{$pkg} ||= do {	808	$retval ||= $retval_;
459	my $proxy = bless { }, urxvt::term::proxy::;
460	Scalar::Util::weaken ($proxy->{term} = $TERM);
461	$proxy
462	},
463	@_,
464	) and last;
465	}
466	}
467		809
468	if ($htype == 1) { # DESTROY	810	if ($@) {
469	# remove hooks if unused	811	$TERM->ungrab; # better to lose the grab than the session
470	if (my $hook = $TERM->{_hook}) {	812	warn $@;
471	for my $htype (0..$#$hook) {
472	$hook_count[$htype] -= scalar keys %{ $hook->[$htype] || {} }
473	or set_should_invoke $htype, 0;
474	}	813	}
475	}	814	}
476		815
		816	verbose 11, "$HOOKNAME[$htype] returning <$retval>"
		817	if $verbosity >= 11;
		818	}
		819
		820	if ($htype == 1) { # DESTROY
477	# clear package objects	821	# clear package objects
478	%$_ = () for values %{ $TERM->{_pkg} };	822	%$_ = () for values %{ $TERM->{_pkg} };
479		823
480	# clear package	824	# clear package
481	%$TERM = ();	825	%$TERM = ();
482	}	826	}
483		827
484	$retval	828	$retval
485	}	829	}
486		830
487	sub urxvt::term::proxy::AUTOLOAD {	831	# urxvt::term::extension
488	$urxvt::term::proxy::AUTOLOAD =~ /:([^:]+)$/	832
		833	package urxvt::term::extension;
		834
		835	sub enable {
		836	my ($self, %hook) = @_;
		837	my $pkg = $self->{_pkg};
		838
		839	while (my ($name, $cb) = each %hook) {
		840	my $htype = $HOOKTYPE{uc $name};
		841	defined $htype
		842	or Carp::croak "unsupported hook type '$name'";
		843
		844	$self->set_should_invoke ($htype, +1)
		845	unless exists $self->{term}{_hook}[$htype]{$pkg};
		846
		847	$self->{term}{_hook}[$htype]{$pkg} = $cb;
		848	}
		849	}
		850
		851	sub disable {
		852	my ($self, @hook) = @_;
		853	my $pkg = $self->{_pkg};
		854
		855	for my $name (@hook) {
		856	my $htype = $HOOKTYPE{uc $name};
		857	defined $htype
		858	or Carp::croak "unsupported hook type '$name'";
		859
		860	$self->set_should_invoke ($htype, -1)
		861	if delete $self->{term}{_hook}[$htype]{$pkg};
		862	}
		863	}
		864
		865	our $AUTOLOAD;
		866
		867	sub AUTOLOAD {
		868	$AUTOLOAD =~ /:([^:]+)$/
489	or die "FATAL: \$AUTOLOAD '$urxvt::term::proxy::AUTOLOAD' unparsable";	869	or die "FATAL: \$AUTOLOAD '$AUTOLOAD' unparsable";
490		870
491	eval qq{	871	eval qq{
492	sub $urxvt::term::proxy::AUTOLOAD {	872	sub $AUTOLOAD {
493	my \$proxy = shift;	873	my \$proxy = shift;
494	\$proxy->{term}->$1 (\@_)	874	\$proxy->{term}->$1 (\@_)
495	}	875	}
496	1	876	1
497	} or die "FATAL: unable to compile method forwarder: $@";	877	} or die "FATAL: unable to compile method forwarder: $@";
498		878
499	goto &$urxvt::term::proxy::AUTOLOAD;	879	goto &$AUTOLOAD;
500	}	880	}
		881
		882	sub DESTROY {
		883	# nop
		884	}
		885
		886	# urxvt::destroy_hook
		887
		888	sub urxvt::destroy_hook::DESTROY {
		889	${$_[0]}->();
		890	}
		891
		892	sub urxvt::destroy_hook(&) {
		893	bless \shift, urxvt::destroy_hook::
		894	}
		895
		896	package urxvt::anyevent;
		897
		898	=head2 The C<urxvt::anyevent> Class
		899
		900	The sole purpose of this class is to deliver an interface to the
		901	C<AnyEvent> module - any module using it will work inside urxvt without
		902	further programming. The only exception is that you cannot wait on
		903	condition variables, but non-blocking condvar use is ok. What this means
		904	is that you cannot use blocking APIs, but the non-blocking variant should
		905	work.
		906
		907	=cut
		908
		909	our $VERSION = 1;
		910
		911	$INC{"urxvt/anyevent.pm"} = 1; # mark us as there
		912	push @AnyEvent::REGISTRY, [urxvt => urxvt::anyevent::];
		913
		914	sub timer {
		915	my ($class, %arg) = @_;
		916
		917	my $cb = $arg{cb};
		918
		919	urxvt::timer
		920	->new
		921	->start (urxvt::NOW + $arg{after})
		922	->cb (sub {
		923	$_[0]->stop; # need to cancel manually
		924	$cb->();
		925	})
		926	}
		927
		928	sub io {
		929	my ($class, %arg) = @_;
		930
		931	my $cb = $arg{cb};
		932
		933	bless [$arg{fh}, urxvt::iow
		934	->new
		935	->fd (fileno $arg{fh})
		936	->events (($arg{poll} =~ /r/ ? 1 : 0)
		937	| ($arg{poll} =~ /w/ ? 2 : 0))
		938	->start
		939	->cb (sub {
		940	$cb->(($_[1] & 1 ? 'r' : '')
		941	. ($_[1] & 2 ? 'w' : ''));
		942	})],
		943	urxvt::anyevent::
		944	}
		945
		946	sub DESTROY {
		947	$_[0][1]->stop;
		948	}
		949
		950	sub condvar {
		951	bless \my $flag, urxvt::anyevent::condvar::
		952	}
		953
		954	sub urxvt::anyevent::condvar::broadcast {
		955	${$_[0]}++;
		956	}
		957
		958	sub urxvt::anyevent::condvar::wait {
		959	unless (${$_[0]}) {
		960	Carp::croak "AnyEvent->condvar blocking wait unsupported in urxvt, use a non-blocking API";
		961	}
		962	}
		963
		964	package urxvt::term;
501		965
502	=head2 The C<urxvt::term> Class	966	=head2 The C<urxvt::term> Class
503		967
504	=over 4	968	=over 4
		969
		970	=cut
		971
		972	# find on_xxx subs in the package and register them
		973	# as hooks
		974	sub register_package {
		975	my ($self, $pkg, $argv) = @_;
		976
		977	no strict 'refs';
		978
		979	urxvt::verbose 6, "register package $pkg to $self";
		980
		981	@{"$pkg\::ISA"} = urxvt::term::extension::;
		982
		983	my $proxy = bless {
		984	_pkg => $pkg,
		985	argv => $argv,
		986	}, $pkg;
		987	Scalar::Util::weaken ($proxy->{term} = $self);
		988
		989	$self->{_pkg}{$pkg} = $proxy;
		990
		991	for my $name (@HOOKNAME) {
		992	if (my $ref = $pkg->can ("on_" . lc $name)) {
		993	$proxy->enable ($name => $ref);
		994	}
		995	}
		996	}
		997
		998	=item $term = new urxvt::term $envhashref, $rxvtname, [arg...]
		999
		1000	Creates a new terminal, very similar as if you had started it with system
		1001	C<$rxvtname, arg...>. C<$envhashref> must be a reference to a C<%ENV>-like
		1002	hash which defines the environment of the new terminal.
		1003
		1004	Croaks (and probably outputs an error message) if the new instance
		1005	couldn't be created. Returns C<undef> if the new instance didn't
		1006	initialise perl, and the terminal object otherwise. The C<init> and
		1007	C<start> hooks will be called during this call.
		1008
		1009	=cut
		1010
		1011	sub new {
		1012	my ($class, $env, @args) = @_;
		1013
		1014	_new ([ map "$_=$env->{$_}", keys %$env ], @args);
		1015	}
		1016
		1017	=item $term->destroy
		1018
		1019	Destroy the terminal object (close the window, free resources
		1020	etc.). Please note that @@RXVT_NAME@@ will not exit as long as any event
		1021	watchers (timers, io watchers) are still active.
		1022
		1023	=item $term->exec_async ($cmd[, @args])
		1024
		1025	Works like the combination of the C<fork>/C<exec> builtins, which executes
		1026	("starts") programs in the background. This function takes care of setting
		1027	the user environment before exec'ing the command (e.g. C<PATH>) and should
		1028	be preferred over explicit calls to C<exec> or C<system>.
		1029
		1030	Returns the pid of the subprocess or C<undef> on error.
		1031
		1032	=cut
		1033
		1034	sub exec_async {
		1035	my $self = shift;
		1036
		1037	my $pid = fork;
		1038
		1039	return $pid
		1040	if !defined $pid or $pid;
		1041
		1042	%ENV = %{ $self->env };
		1043
		1044	exec @_;
		1045	urxvt::_exit 255;
		1046	}
		1047
		1048	=item $isset = $term->option ($optval[, $set])
		1049
		1050	Returns true if the option specified by C<$optval> is enabled, and
		1051	optionally change it. All option values are stored by name in the hash
		1052	C<%urxvt::OPTION>. Options not enabled in this binary are not in the hash.
		1053
		1054	Here is a a likely non-exhaustive list of option names, please see the
		1055	source file F</src/optinc.h> to see the actual list:
		1056
		1057	borderLess console cursorBlink cursorUnderline hold iconic insecure
		1058	intensityStyles jumpScroll loginShell mapAlert meta8 mouseWheelScrollPage
		1059	override-redirect pastableTabs pointerBlank reverseVideo scrollBar
		1060	scrollBar_floating scrollBar_right scrollTtyKeypress scrollTtyOutput
		1061	scrollWithBuffer secondaryScreen secondaryScroll skipBuiltinGlyphs
		1062	transparent tripleclickwords utmpInhibit visualBell
505		1063
506	=item $value = $term->resource ($name[, $newval])	1064	=item $value = $term->resource ($name[, $newval])
507		1065
508	Returns the current resource value associated with a given name and	1066	Returns the current resource value associated with a given name and
509	optionally sets a new value. Setting values is most useful in the C<init>	1067	optionally sets a new value. Setting values is most useful in the C<init>
…		…
519		1077
520	Please note that resource strings will currently only be freed when the	1078	Please note that resource strings will currently only be freed when the
521	terminal is destroyed, so changing options frequently will eat memory.	1079	terminal is destroyed, so changing options frequently will eat memory.
522		1080
523	Here is a a likely non-exhaustive list of resource names, not all of which	1081	Here is a a likely non-exhaustive list of resource names, not all of which
524	are supported in every build, please see the source to see the actual	1082	are supported in every build, please see the source file F</src/rsinc.h>
525	list:	1083	to see the actual list:
526		1084
527	answerbackstring backgroundPixmap backspace_key boldFont boldItalicFont	1085	answerbackstring backgroundPixmap backspace_key boldFont boldItalicFont
528	borderLess color cursorBlink cursorUnderline cutchars delete_key	1086	borderLess color cursorBlink cursorUnderline cutchars delete_key
529	display_name embed ext_bwidth fade font geometry hold iconName	1087	display_name embed ext_bwidth fade font geometry hold iconName
530	imFont imLocale inputMethod insecure int_bwidth intensityStyles	1088	imFont imLocale inputMethod insecure int_bwidth intensityStyles
531	italicFont jumpScroll lineSpace loginShell mapAlert menu meta8 modifier	1089	italicFont jumpScroll lineSpace loginShell mapAlert meta8 modifier
532	mouseWheelScrollPage name pastableTabs path perl_eval perl_ext_1 perl_ext_2	1090	mouseWheelScrollPage name override_redirect pastableTabs path perl_eval
533	perl_lib pointerBlank pointerBlankDelay preeditType print_pipe pty_fd	1091	perl_ext_1 perl_ext_2 perl_lib pointerBlank pointerBlankDelay
534	reverseVideo saveLines scrollBar scrollBar_align scrollBar_floating	1092	preeditType print_pipe pty_fd reverseVideo saveLines scrollBar
535	scrollBar_right scrollBar_thickness scrollTtyKeypress scrollTtyOutput	1093	scrollBar_align scrollBar_floating scrollBar_right scrollBar_thickness
536	scrollWithBuffer scrollstyle secondaryScreen secondaryScroll selectstyle	1094	scrollTtyKeypress scrollTtyOutput scrollWithBuffer scrollstyle
537	shade term_name title transparent transparent_all tripleclickwords	1095	secondaryScreen secondaryScroll selectstyle shade term_name title
538	utmpInhibit visualBell	1096	transient_for transparent transparent_all tripleclickwords utmpInhibit
		1097	visualBell
539		1098
540	=cut	1099	=cut
541		1100
542	sub urxvt::term::resource($$;$) {	1101	sub resource($$;$) {
543	my ($self, $name) = (shift, shift);	1102	my ($self, $name) = (shift, shift);
544	unshift @_, $self, $name, ($name =~ s/\s*\+\s*(\d+)$// ? $1 : 0);	1103	unshift @_, $self, $name, ($name =~ s/\s*\+\s*(\d+)$// ? $1 : 0);
545	goto &urxvt::term::_resource;	1104	&urxvt::term::_resource
546	}	1105	}
		1106
		1107	=item $value = $term->x_resource ($pattern)
		1108
		1109	Returns the X-Resource for the given pattern, excluding the program or
		1110	class name, i.e. C<< $term->x_resource ("boldFont") >> should return the
		1111	same value as used by this instance of rxvt-unicode. Returns C<undef> if no
		1112	resource with that pattern exists.
		1113
		1114	This method should only be called during the C<on_start> hook, as there is
		1115	only one resource database per display, and later invocations might return
		1116	the wrong resources.
		1117
		1118	=item $success = $term->parse_keysym ($keysym_spec, $command_string)
		1119
		1120	Adds a keymap translation exactly as specified via a resource. See the
		1121	C<keysym> resource in the @@RXVT_NAME@@(1) manpage.
547		1122
548	=item $rend = $term->rstyle ([$new_rstyle])	1123	=item $rend = $term->rstyle ([$new_rstyle])
549		1124
550	Return and optionally change the current rendition. Text that is output by	1125	Return and optionally change the current rendition. Text that is output by
551	the terminal application will use this style.	1126	the terminal application will use this style.
…		…
562	=item ($row, $col) = $term->selection_end ([$row, $col])	1137	=item ($row, $col) = $term->selection_end ([$row, $col])
563		1138
564	Return the current values of the selection mark, begin or end positions,	1139	Return the current values of the selection mark, begin or end positions,
565	and optionally set them to new values.	1140	and optionally set them to new values.
566		1141
		1142	=item $term->selection_make ($eventtime[, $rectangular])
		1143
		1144	Tries to make a selection as set by C<selection_beg> and
		1145	C<selection_end>. If C<$rectangular> is true (default: false), a
		1146	rectangular selection will be made. This is the prefered function to make
		1147	a selection.
		1148
567	=item $success = $term->selection_grab ($eventtime)	1149	=item $success = $term->selection_grab ($eventtime)
568		1150
569	Try to request the primary selection from the server (for example, as set	1151	Try to request the primary selection text from the server (for example, as
570	by the next method).	1152	set by the next method). No visual feedback will be given. This function
		1153	is mostly useful from within C<on_sel_grab> hooks.
571		1154
572	=item $oldtext = $term->selection ([$newtext])	1155	=item $oldtext = $term->selection ([$newtext])
573		1156
574	Return the current selection text and optionally replace it by C<$newtext>.	1157	Return the current selection text and optionally replace it by C<$newtext>.
575		1158
576	#=item $term->overlay ($x, $y, $text)	1159	=item $term->overlay_simple ($x, $y, $text)
577	#	1160
578	#Create a simple multi-line overlay box. See the next method for details.	1161	Create a simple multi-line overlay box. See the next method for details.
579	#	1162
580	#=cut	1163	=cut
581	#	1164
582	#sub urxvt::term::scr_overlay {	1165	sub overlay_simple {
583	# my ($self, $x, $y, $text) = @_;	1166	my ($self, $x, $y, $text) = @_;
584	#	1167
585	# my @lines = split /\n/, $text;	1168	my @lines = split /\n/, $text;
586	#	1169
587	# my $w = 0;	1170	my $w = List::Util::max map $self->strwidth ($_), @lines;
588	# for (map $self->strwidth ($_), @lines) {	1171
589	# $w = $_ if $w < $_;
590	# }
591	#
592	# $self->scr_overlay_new ($x, $y, $w, scalar @lines);	1172	my $overlay = $self->overlay ($x, $y, $w, scalar @lines);
593	# $self->scr_overlay_set (0, $_, $lines[$_]) for 0.. $#lines;	1173	$overlay->set (0, $_, $lines[$_]) for 0.. $#lines;
594	#}	1174
		1175	$overlay
		1176	}
595		1177
596	=item $term->overlay ($x, $y, $width, $height[, $rstyle[, $border]])	1178	=item $term->overlay ($x, $y, $width, $height[, $rstyle[, $border]])
597		1179
598	Create a new (empty) overlay at the given position with the given	1180	Create a new (empty) overlay at the given position with the given
599	width/height. C<$rstyle> defines the initial rendition style	1181	width/height. C<$rstyle> defines the initial rendition style
…		…
626		1208
627	If hidden, display the overlay again.	1209	If hidden, display the overlay again.
628		1210
629	=back	1211	=back
630		1212
		1213	=item $popup = $term->popup ($event)
		1214
		1215	Creates a new C<urxvt::popup> object that implements a popup menu. The
		1216	C<$event> I<must> be the event causing the menu to pop up (a button event,
		1217	currently).
		1218
		1219	=cut
		1220
		1221	sub popup {
		1222	my ($self, $event) = @_;
		1223
		1224	$self->grab ($event->{time}, 1)
		1225	or return;
		1226
		1227	my $popup = bless {
		1228	term => $self,
		1229	event => $event,
		1230	}, urxvt::popup::;
		1231
		1232	Scalar::Util::weaken $popup->{term};
		1233
		1234	$self->{_destroy}{$popup} = urxvt::destroy_hook { $popup->{popup}->destroy };
		1235	Scalar::Util::weaken $self->{_destroy}{$popup};
		1236
		1237	$popup
		1238	}
		1239
631	=item $cellwidth = $term->strwidth $string	1240	=item $cellwidth = $term->strwidth ($string)
632		1241
633	Returns the number of screen-cells this string would need. Correctly	1242	Returns the number of screen-cells this string would need. Correctly
634	accounts for wide and combining characters.	1243	accounts for wide and combining characters.
635		1244
636	=item $octets = $term->locale_encode $string	1245	=item $octets = $term->locale_encode ($string)
637		1246
638	Convert the given text string into the corresponding locale encoding.	1247	Convert the given text string into the corresponding locale encoding.
639		1248
640	=item $string = $term->locale_decode $octets	1249	=item $string = $term->locale_decode ($octets)
641		1250
642	Convert the given locale-encoded octets into a perl string.	1251	Convert the given locale-encoded octets into a perl string.
		1252
		1253	=item $term->scr_xor_span ($beg_row, $beg_col, $end_row, $end_col[, $rstyle])
		1254
		1255	XORs the rendition values in the given span with the provided value
		1256	(default: C<RS_RVid>), which I<MUST NOT> contain font styles. Useful in
		1257	refresh hooks to provide effects similar to the selection.
		1258
		1259	=item $term->scr_xor_rect ($beg_row, $beg_col, $end_row, $end_col[, $rstyle1[, $rstyle2]])
		1260
		1261	Similar to C<scr_xor_span>, but xors a rectangle instead. Trailing
		1262	whitespace will additionally be xored with the C<$rstyle2>, which defaults
		1263	to C<RS_RVid | RS_Uline>, which removes reverse video again and underlines
		1264	it instead. Both styles I<MUST NOT> contain font styles.
		1265
		1266	=item $term->scr_bell
		1267
		1268	Ring the bell!
643		1269
644	=item $term->scr_add_lines ($string)	1270	=item $term->scr_add_lines ($string)
645		1271
646	Write the given text string to the screen, as if output by the application	1272	Write the given text string to the screen, as if output by the application
647	running inside the terminal. It may not contain command sequences (escape	1273	running inside the terminal. It may not contain command sequences (escape
…		…
650		1276
651	Normally its not a good idea to use this function, as programs might be	1277	Normally its not a good idea to use this function, as programs might be
652	confused by changes in cursor position or scrolling. Its useful inside a	1278	confused by changes in cursor position or scrolling. Its useful inside a
653	C<on_add_lines> hook, though.	1279	C<on_add_lines> hook, though.
654		1280
		1281	=item $term->scr_change_screen ($screen)
		1282
		1283	Switch to given screen - 0 primary, 1 secondary.
		1284
		1285	=item $term->cmd_parse ($octets)
		1286
		1287	Similar to C<scr_add_lines>, but the argument must be in the
		1288	locale-specific encoding of the terminal and can contain command sequences
		1289	(escape codes) that will be interpreted.
		1290
655	=item $term->tt_write ($octets)	1291	=item $term->tt_write ($octets)
656		1292
657	Write the octets given in C<$data> to the tty (i.e. as program input). To	1293	Write the octets given in C<$data> to the tty (i.e. as program input). To
658	pass characters instead of octets, you should convert your strings first	1294	pass characters instead of octets, you should convert your strings first
659	to the locale-specific encoding using C<< $term->locale_encode >>.	1295	to the locale-specific encoding using C<< $term->locale_encode >>.
660		1296
		1297	=item $old_events = $term->pty_ev_events ([$new_events])
		1298
		1299	Replaces the event mask of the pty watcher by the given event mask. Can
		1300	be used to suppress input and output handling to the pty/tty. See the
		1301	description of C<< urxvt::timer->events >>. Make sure to always restore
		1302	the previous value.
		1303
		1304	=item $windowid = $term->parent
		1305
		1306	Return the window id of the toplevel window.
		1307
		1308	=item $windowid = $term->vt
		1309
		1310	Return the window id of the terminal window.
		1311
		1312	=item $term->vt_emask_add ($x_event_mask)
		1313
		1314	Adds the specified events to the vt event mask. Useful e.g. when you want
		1315	to receive pointer events all the times:
		1316
		1317	$term->vt_emask_add (urxvt::PointerMotionMask);
		1318
661	=item $window_width = $term->width	1319	=item $window_width = $term->width
662		1320
663	=item $window_height = $term->height	1321	=item $window_height = $term->height
664		1322
665	=item $font_width = $term->fwidth	1323	=item $font_width = $term->fwidth
…		…
678		1336
679	=item $max_scrollback = $term->saveLines	1337	=item $max_scrollback = $term->saveLines
680		1338
681	=item $nrow_plus_saveLines = $term->total_rows	1339	=item $nrow_plus_saveLines = $term->total_rows
682		1340
683	=item $lines_in_scrollback = $term->nsaved	1341	=item $topmost_scrollback_row = $term->top_row
684		1342
685	Return various integers describing terminal characteristics.	1343	Return various integers describing terminal characteristics.
686		1344
		1345	=item $x_display = $term->display_id
		1346
		1347	Return the DISPLAY used by rxvt-unicode.
		1348
		1349	=item $lc_ctype = $term->locale
		1350
		1351	Returns the LC_CTYPE category string used by this rxvt-unicode.
		1352
		1353	=item $env = $term->env
		1354
		1355	Returns a copy of the environment in effect for the terminal as a hashref
		1356	similar to C<\%ENV>.
		1357
		1358	=cut
		1359
		1360	sub env {
		1361	if (my $env = $_[0]->_env) {
		1362	+{ map /^([^=]+)(?:=(.*))?$/s && ($1 => $2), @$env }
		1363	} else {
		1364	+{ %ENV }
		1365	}
		1366	}
		1367
		1368	=item $modifiermask = $term->ModLevel3Mask
		1369
		1370	=item $modifiermask = $term->ModMetaMask
		1371
		1372	=item $modifiermask = $term->ModNumLockMask
		1373
		1374	Return the modifier masks corresponding to the "ISO Level 3 Shift" (often
		1375	AltGr), the meta key (often Alt) and the num lock key, if applicable.
		1376
		1377	=item $screen = $term->current_screen
		1378
		1379	Returns the currently displayed screen (0 primary, 1 secondary).
		1380
687	=item $view_start = $term->view_start ([$newvalue])	1381	=item $view_start = $term->view_start ([$newvalue])
688		1382
689	Returns the negative row number of the topmost line. Minimum value is	1383	Returns the row number of the topmost displayed line. Maximum value is
690	C<0>, which displays the normal terminal contents. Larger values scroll	1384	C<0>, which displays the normal terminal contents. Lower values scroll
691	this many lines into the scrollback buffer.	1385	this many lines into the scrollback buffer.
692		1386
693	=item $term->want_refresh	1387	=item $term->want_refresh
694		1388
695	Requests a screen refresh. At the next opportunity, rxvt-unicode will	1389	Requests a screen refresh. At the next opportunity, rxvt-unicode will
…		…
709	If C<$new_text> is specified, it will replace characters in the current	1403	If C<$new_text> is specified, it will replace characters in the current
710	line, starting at column C<$start_col> (default C<0>), which is useful	1404	line, starting at column C<$start_col> (default C<0>), which is useful
711	to replace only parts of a line. The font index in the rendition will	1405	to replace only parts of a line. The font index in the rendition will
712	automatically be updated.	1406	automatically be updated.
713		1407
714	C<$text> is in a special encoding: tabs and wide characters that use more	1408	C<$text> is in a special encoding: tabs and wide characters that use
715	than one cell when displayed are padded with urxvt::NOCHAR characters	1409	more than one cell when displayed are padded with C<$urxvt::NOCHAR>
716	(C<chr 65535>). Characters with combining characters and other characters	1410	characters. Characters with combining characters and other characters that
717	that do not fit into the normal tetx encoding will be replaced with	1411	do not fit into the normal tetx encoding will be replaced with characters
718	characters in the private use area.	1412	in the private use area.
719		1413
720	You have to obey this encoding when changing text. The advantage is	1414	You have to obey this encoding when changing text. The advantage is
721	that C<substr> and similar functions work on screen cells and not on	1415	that C<substr> and similar functions work on screen cells and not on
722	characters.	1416	characters.
723		1417
…		…
774	Return the row number of the first/last row of the line, respectively.	1468	Return the row number of the first/last row of the line, respectively.
775		1469
776	=item $offset = $line->offset_of ($row, $col)	1470	=item $offset = $line->offset_of ($row, $col)
777		1471
778	Returns the character offset of the given row|col pair within the logical	1472	Returns the character offset of the given row|col pair within the logical
779	line.	1473	line. Works for rows outside the line, too, and returns corresponding
		1474	offsets outside the string.
780		1475
781	=item ($row, $col) = $line->coord_of ($offset)	1476	=item ($row, $col) = $line->coord_of ($offset)
782		1477
783	Translates a string offset into terminal coordinates again.	1478	Translates a string offset into terminal coordinates again.
784		1479
785	=back	1480	=back
786		1481
787	=cut	1482	=cut
788		1483
789	sub urxvt::term::line {	1484	sub line {
790	my ($self, $row) = @_;	1485	my ($self, $row) = @_;
791		1486
792	my $maxrow = $self->nrow - 1;	1487	my $maxrow = $self->nrow - 1;
793		1488
794	my ($beg, $end) = ($row, $row);	1489	my ($beg, $end) = ($row, $row);
…		…
858	$offset / $self->{ncol} + $self->{beg},	1553	$offset / $self->{ncol} + $self->{beg},
859	$offset % $self->{ncol}	1554	$offset % $self->{ncol}
860	)	1555	)
861	}	1556	}
862		1557
863	=item ($row, $col) = $line->coord_of ($offset)
864	=item $text = $term->special_encode $string	1558	=item $text = $term->special_encode $string
865		1559
866	Converts a perl string into the special encoding used by rxvt-unicode,	1560	Converts a perl string into the special encoding used by rxvt-unicode,
867	where one character corresponds to one screen cell. See	1561	where one character corresponds to one screen cell. See
868	C<< $term->ROW_t >> for details.	1562	C<< $term->ROW_t >> for details.
…		…
870	=item $string = $term->special_decode $text	1564	=item $string = $term->special_decode $text
871		1565
872	Converts rxvt-unicodes text reprsentation into a perl string. See	1566	Converts rxvt-unicodes text reprsentation into a perl string. See
873	C<< $term->ROW_t >> for details.	1567	C<< $term->ROW_t >> for details.
874		1568
		1569	=item $success = $term->grab_button ($button, $modifiermask)
		1570
		1571	Registers a synchronous button grab. See the XGrabButton manpage.
		1572
		1573	=item $success = $term->grab ($eventtime[, $sync])
		1574
		1575	Calls XGrabPointer and XGrabKeyboard in asynchronous (default) or
		1576	synchronous (C<$sync> is true). Also remembers the grab timestampe.
		1577
		1578	=item $term->allow_events_async
		1579
		1580	Calls XAllowEvents with AsyncBoth for the most recent grab.
		1581
		1582	=item $term->allow_events_sync
		1583
		1584	Calls XAllowEvents with SyncBoth for the most recent grab.
		1585
		1586	=item $term->allow_events_replay
		1587
		1588	Calls XAllowEvents with both ReplayPointer and ReplayKeyboard for the most
		1589	recent grab.
		1590
		1591	=item $term->ungrab
		1592
		1593	Calls XUngrab for the most recent grab. Is called automatically on
		1594	evaluation errors, as it is better to lose the grab in the error case as
		1595	the session.
		1596
		1597	=item $atom = $term->XInternAtom ($atom_name[, $only_if_exists])
		1598
		1599	=item $atom_name = $term->XGetAtomName ($atom)
		1600
		1601	=item @atoms = $term->XListProperties ($window)
		1602
		1603	=item ($type,$format,$octets) = $term->XGetWindowProperty ($window, $property)
		1604
		1605	=item $term->XChangeWindowProperty ($window, $property, $type, $format, $octets)
		1606
		1607	=item $term->XDeleteProperty ($window, $property)
		1608
		1609	=item $window = $term->DefaultRootWindow
		1610
		1611	=item $term->XReparentWindow ($window, $parent, [$x, $y])
		1612
		1613	=item $term->XMapWindow ($window)
		1614
		1615	=item $term->XUnmapWindow ($window)
		1616
		1617	=item $term->XMoveResizeWindow ($window, $x, $y, $width, $height)
		1618
		1619	=item ($x, $y, $child_window) = $term->XTranslateCoordinates ($src, $dst, $x, $y)
		1620
		1621	=item $term->XChangeInput ($window, $add_events[, $del_events])
		1622
		1623	Various X or X-related functions. The C<$term> object only serves as
		1624	the source of the display, otherwise those functions map more-or-less
		1625	directory onto the X functions of the same name.
		1626
875	=back	1627	=back
		1628
		1629	=cut
		1630
		1631	package urxvt::popup;
		1632
		1633	=head2 The C<urxvt::popup> Class
		1634
		1635	=over 4
		1636
		1637	=cut
		1638
		1639	sub add_item {
		1640	my ($self, $item) = @_;
		1641
		1642	$item->{rend}{normal} = "\x1b[0;30;47m" unless exists $item->{rend}{normal};
		1643	$item->{rend}{hover} = "\x1b[0;30;46m" unless exists $item->{rend}{hover};
		1644	$item->{rend}{active} = "\x1b[m" unless exists $item->{rend}{active};
		1645
		1646	$item->{render} ||= sub { $_[0]{text} };
		1647
		1648	push @{ $self->{item} }, $item;
		1649	}
		1650
		1651	=item $popup->add_title ($title)
		1652
		1653	Adds a non-clickable title to the popup.
		1654
		1655	=cut
		1656
		1657	sub add_title {
		1658	my ($self, $title) = @_;
		1659
		1660	$self->add_item ({
		1661	rend => { normal => "\x1b[38;5;11;44m", hover => "\x1b[38;5;11;44m", active => "\x1b[38;5;11;44m" },
		1662	text => $title,
		1663	activate => sub { },
		1664	});
		1665	}
		1666
		1667	=item $popup->add_separator ([$sepchr])
		1668
		1669	Creates a separator, optionally using the character given as C<$sepchr>.
		1670
		1671	=cut
		1672
		1673	sub add_separator {
		1674	my ($self, $sep) = @_;
		1675
		1676	$sep ||= "=";
		1677
		1678	$self->add_item ({
		1679	rend => { normal => "\x1b[0;30;47m", hover => "\x1b[0;30;47m", active => "\x1b[0;30;47m" },
		1680	text => "",
		1681	render => sub { $sep x $self->{term}->ncol },
		1682	activate => sub { },
		1683	});
		1684	}
		1685
		1686	=item $popup->add_button ($text, $cb)
		1687
		1688	Adds a clickable button to the popup. C<$cb> is called whenever it is
		1689	selected.
		1690
		1691	=cut
		1692
		1693	sub add_button {
		1694	my ($self, $text, $cb) = @_;
		1695
		1696	$self->add_item ({ type => "button", text => $text, activate => $cb});
		1697	}
		1698
		1699	=item $popup->add_toggle ($text, $cb, $initial_value)
		1700
		1701	Adds a toggle/checkbox item to the popup. Teh callback gets called
		1702	whenever it gets toggled, with a boolean indicating its value as its first
		1703	argument.
		1704
		1705	=cut
		1706
		1707	sub add_toggle {
		1708	my ($self, $text, $cb, $value) = @_;
		1709
		1710	my $item; $item = {
		1711	type => "button",
		1712	text => " $text",
		1713	value => $value,
		1714	render => sub { ($_[0]{value} ? "* " : " ") . $text },
		1715	activate => sub { $cb->($_[1]{value} = !$_[1]{value}); },
		1716	};
		1717
		1718	$self->add_item ($item);
		1719	}
		1720
		1721	=item $popup->show
		1722
		1723	Displays the popup (which is initially hidden).
		1724
		1725	=cut
		1726
		1727	sub show {
		1728	my ($self) = @_;
		1729
		1730	local $urxvt::popup::self = $self;
		1731
		1732	my $env = $self->{term}->env;
		1733	# we can't hope to reproduce the locale algorithm, so nuke LC_ALL and set LC_CTYPE.
		1734	delete $env->{LC_ALL};
		1735	$env->{LC_CTYPE} = $self->{term}->locale;
		1736
		1737	urxvt::term->new ($env, "popup",
		1738	"--perl-lib" => "", "--perl-ext-common" => "",
		1739	"-pty-fd" => -1, "-sl" => 0,
		1740	"-b" => 1, "-bd" => "grey80", "-bl", "-override-redirect",
		1741	"--transient-for" => $self->{term}->parent,
		1742	"-display" => $self->{term}->display_id,
		1743	"-pe" => "urxvt-popup")
		1744	or die "unable to create popup window\n";
		1745	}
		1746
		1747	sub DESTROY {
		1748	my ($self) = @_;
		1749
		1750	delete $self->{term}{_destroy}{$self};
		1751	$self->{term}->ungrab;
		1752	}
		1753
		1754	=back
		1755
		1756	=cut
		1757
		1758	package urxvt::watcher;
		1759
		1760	@urxvt::timer::ISA = __PACKAGE__;
		1761	@urxvt::iow::ISA = __PACKAGE__;
		1762	@urxvt::pw::ISA = __PACKAGE__;
		1763	@urxvt::iw::ISA = __PACKAGE__;
876		1764
877	=head2 The C<urxvt::timer> Class	1765	=head2 The C<urxvt::timer> Class
878		1766
879	This class implements timer watchers/events. Time is represented as a	1767	This class implements timer watchers/events. Time is represented as a
880	fractional number of seconds since the epoch. Example:	1768	fractional number of seconds since the epoch. Example:
…		…
919		1807
920	=item $timer = $timer->start ($tstamp)	1808	=item $timer = $timer->start ($tstamp)
921		1809
922	Set the event trigger time to C<$tstamp> and start the timer.	1810	Set the event trigger time to C<$tstamp> and start the timer.
923		1811
		1812	=item $timer = $timer->after ($delay)
		1813
		1814	Like C<start>, but sets the expiry timer to c<urxvt::NOW + $delay>.
		1815
924	=item $timer = $timer->stop	1816	=item $timer = $timer->stop
925		1817
926	Stop the timer.	1818	Stop the timer.
927		1819
928	=back	1820	=back
…		…
933		1825
934	$term->{socket} = ...	1826	$term->{socket} = ...
935	$term->{iow} = urxvt::iow	1827	$term->{iow} = urxvt::iow
936	->new	1828	->new
937	->fd (fileno $term->{socket})	1829	->fd (fileno $term->{socket})
938	->events (1) # wait for read data	1830	->events (urxvt::EVENT_READ)
939	->start	1831	->start
940	->cb (sub {	1832	->cb (sub {
941	my ($iow, $revents) = @_;	1833	my ($iow, $revents) = @_;
942	# $revents must be 1 here, no need to check	1834	# $revents must be 1 here, no need to check
943	sysread $term->{socket}, my $buf, 8192	1835	sysread $term->{socket}, my $buf, 8192
…		…
960		1852
961	Set the filedescriptor (not handle) to watch.	1853	Set the filedescriptor (not handle) to watch.
962		1854
963	=item $iow = $iow->events ($eventmask)	1855	=item $iow = $iow->events ($eventmask)
964		1856
965	Set the event mask to watch. Bit #0 (value C<1>) enables watching for read	1857	Set the event mask to watch. The only allowed values are
966	data, Bit #1 (value C<2>) enables watching for write data.	1858	C<urxvt::EVENT_READ> and C<urxvt::EVENT_WRITE>, which might be ORed
		1859	together, or C<urxvt::EVENT_NONE>.
967		1860
968	=item $iow = $iow->start	1861	=item $iow = $iow->start
969		1862
970	Start watching for requested events on the given handle.	1863	Start watching for requested events on the given handle.
971		1864
972	=item $iow = $iow->stop	1865	=item $iow = $iow->stop
973		1866
974	Stop watching for events on the given filehandle.	1867	Stop watching for events on the given filehandle.
		1868
		1869	=back
		1870
		1871	=head2 The C<urxvt::iw> Class
		1872
		1873	This class implements idle watchers, that get called automatically when
		1874	the process is idle. They should return as fast as possible, after doing
		1875	some useful work.
		1876
		1877	=over 4
		1878
		1879	=item $iw = new urxvt::iw
		1880
		1881	Create a new idle watcher object in stopped state.
		1882
		1883	=item $iw = $iw->cb (sub { my ($iw) = @_; ... })
		1884
		1885	Set the callback to be called when the watcher triggers.
		1886
		1887	=item $timer = $timer->start
		1888
		1889	Start the watcher.
		1890
		1891	=item $timer = $timer->stop
		1892
		1893	Stop the watcher.
		1894
		1895	=back
		1896
		1897	=head2 The C<urxvt::pw> Class
		1898
		1899	This class implements process watchers. They create an event whenever a
		1900	process exits, after which they stop automatically.
		1901
		1902	my $pid = fork;
		1903	...
		1904	$term->{pw} = urxvt::pw
		1905	->new
		1906	->start ($pid)
		1907	->cb (sub {
		1908	my ($pw, $exit_status) = @_;
		1909	...
		1910	});
		1911
		1912	=over 4
		1913
		1914	=item $pw = new urxvt::pw
		1915
		1916	Create a new process watcher in stopped state.
		1917
		1918	=item $pw = $pw->cb (sub { my ($pw, $exit_status) = @_; ... })
		1919
		1920	Set the callback to be called when the timer triggers.
		1921
		1922	=item $pw = $timer->start ($pid)
		1923
		1924	Tells the wqtcher to start watching for process C<$pid>.
		1925
		1926	=item $pw = $pw->stop
		1927
		1928	Stop the watcher.
975		1929
976	=back	1930	=back
977		1931
978	=head1 ENVIRONMENT	1932	=head1 ENVIRONMENT
979		1933
…		…
982	This variable controls the verbosity level of the perl extension. Higher	1936	This variable controls the verbosity level of the perl extension. Higher
983	numbers indicate more verbose output.	1937	numbers indicate more verbose output.
984		1938
985	=over 4	1939	=over 4
986		1940
987	=item =0 - only fatal messages	1941	=item == 0 - fatal messages
988		1942
989	=item =3 - script loading and management	1943	=item >= 3 - script loading and management
990		1944
991	=item =10 - all events received	1945	=item >=10 - all called hooks
		1946
		1947	=item >=11 - hook reutrn values
992		1948
993	=back	1949	=back
994		1950
995	=head1 AUTHOR	1951	=head1 AUTHOR
996		1952

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