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Revision: 1.228
Committed: Sat Apr 11 05:56:36 2009 UTC (15 years, 1 month ago) by root
Branch: MAIN
CVS Tags: rel-4_351
Changes since 1.227: +1 -0 lines
Log Message:
4.351

File Contents

# Content
1 Revision history for Perl extension AnyEvent.
2
3 4.351 Sat Apr 11 07:56:14 CEST 2009
4 - actually make the signal pipe work under win32.
5 - localise $! in signal handler to avoid changing $!, although
6 perl itself does not seem to save/restore errno either.
7 - set the cloexec flag on the signal pipe (normally set by perl too).
8
9 4.35 Fri Mar 27 11:48:20 CET 2009
10 - event models relying on AnyEvent's signal watcher emulation did
11 invoke the callback asynchronously, contradicting documentation
12 and causing signals to get lost (this includes AnyEvent's own
13 event loop). AnyEvent now uses the standard pipe trick to make
14 callback execution synchronous to the event loop.
15 - AnyEvent::Handle didn't free TLS context data on DESTROY
16 (patch by Pavel Shaydo).
17 - work around the ever-incompatibly-changing API of MakeMaker.
18 - document that changing global variables without restoring them
19 is a bad idea in Perl (noted by Adam Rosenstein).
20 - AnyEvent::Strict now barfs if ->io is passed a file.
21
22 4.34 Thu Feb 12 18:32:45 CET 2009
23 - separately buffer TLS read data, as otherwise the read queue could
24 deadlock as receiving data is not expected while draining the
25 read queue (which cna only happen with TLS).
26 - raise EBADMSG error on JSON decoding errors.
27 - fix some minor manpage bugs (reported by Maximilian Gaß).
28 - speed up select bitmask parsing quite a bit in the pure perl
29 backend.
30 - use CORE::select instead of just select in AnyEvent::Impl::Perl.
31
32 4.331 Tue Jan 6 21:07:25 CET 2009
33 - socketpair fails on many vista machines because vista has
34 completely broken accept/getpeername and getsockname functions,
35 so we provide our own socketpair emulation that kind of works
36 (AnyEvent::Util::portable_pipe).
37 - new function: AnyEvent::Util::portable_socketpair.
38 - take advantage of the Guard module if it exists.
39
40 4.33 Fri Nov 21 02:35:40 CET 2008
41 - AnyEvent::Strict did errornously flag a fileno of 0 as
42 illegal.
43 - reduce memory usage and slightly speed up the pure perl backend
44 by only storing the file descriptor, not the file handle.
45 - add missing autocork method to AnyEvent::Handle (reported
46 by Adam Rosenstein).
47 - AnyEvent::DNS->resolve errornously documented an $rcode result
48 argument, but there isn't (spotted by Henrik Krohns).
49 - the naked truth about Tk - it's basically unmaintained.
50
51 4.32 Mon Nov 3 22:46:32 CET 2008
52 - fix AnyEvent::Socket::resolve_sockaddr to properly support
53 unix sockets again and choose a proper default for
54 the socket type.
55 - fix call to resolve_sockaddr in tcp_connect.
56
57 4.31 Thu Oct 30 04:41:48 CET 2008
58 - implemented AnyEvent::Handle->destroy method.
59 - hint about unexpected effects in TLS mode.
60 - speed up AnyEvent::Impl::Perl by using more arrays
61 instead of hashes without the slightest loss of readability :)
62 - work around a perl argument refcounting bug.
63 - with some perl patches applied, AnyEvent now seems leak-free.
64
65 4.3 Fri Oct 3 09:18:43 CEST 2008
66 - AnyEvent will now install a no-op signal handler for SIGPIPE,
67 unless one has been installed already.
68 - warn about not loaidng AnyEvent::Impl::POE early enough
69 (patch by Adam Rosenstein).
70 - fixed a great number of bugs and corner cases in AnyEvent::Handle:
71 - fix a bug in where in SSL connect mode, the
72 client would first wait for some data by the server and
73 otherwise hang. (reported and analyzed in an absolutely
74 exemplary manner by Adam Rosenstein).
75 - fix a bug in where SSL EOF would not be treated
76 as stream EOF, putting the connection into a hung state.
77 (reported and analyzed in an absolutely exemplary manner by Adam
78 Rosenstein).
79 - fix a potential segfault when the TLS context
80 would go missing in a read callback (e.g. due to stoptls) -
81 Net::SSLeay of course makes no type checking whatsoever.
82 - AnyEvent::Handle will not stop the read watcher in TLS mode.
83 - AnyEvent::Handle->stoptls will send a TLS close notify
84 instead of simply destroying the stream now.
85 - fix a bug where large blocks of data written in TLS mode
86 would not be sent unless triggered by receives.
87 - on_drain will now take the tls write buffer into account.
88 - SSL operations have been streamlined a bit and should be faster
89 now, more to come, though.
90 - added a FAQ section, will document nontrivial issues in there.
91
92 4.234 Mon Sep 29 04:08:13 CEST 2008
93 - fix child watcher documentation: only child exits will be reported,
94 no trace events.
95 - mention SIGPIPE in AnyEvent::Handle.
96 - perl backend will now use POSIX::times as monotonic clock
97 when available and the monotonic clock option is not.
98 - run even without Time::HiRes in some cases now, but do not
99 provide sub-second accuracy (all *supported* perl versions have
100 Time::HiRes).
101
102 4.233 Fri Aug 22 01:48:05 CEST 2008
103 - fix a bug in the testsuite, causing a hang.
104 - clarified lots of AnyEvent::Handle constructor arguments.
105
106 4.232 Thu Aug 21 20:44:25 CEST 2008
107 - fix a bug in AnyEvent::Handle that could cause two fatal error
108 callbacks on EOF, which caused AnyEvent::HTTP to signal success twice
109 (testcase by Leon Brocard).
110 - clarified on_eof/on_error documentation a bit.
111
112 4.231 Tue Jul 29 13:12:15 CEST 2008
113 - remove some debugging code left in AnyEvent::Util::fork_call
114 (and no, it's impossible to implement with the broken windows
115 perls without resource leaks or worse).
116
117 4.23 Tue Jul 29 12:19:59 CEST 2008
118 - document the first parameter passed to condvar callbacks to be
119 the callback.
120 - add AnyEvent::Socket::{ntoa,aton} aliases.
121 - optimize the AE::Handle->push_read (line) for the default
122 eol marker.
123 - optimize push_read (packstring|storable) for small packets.
124 - invoke on_error callback when no on_eof callback is set.
125 - fix a bug in push_read (storable) of unknown impact.
126
127 4.22 Sun Jul 20 16:34:13 CEST 2008
128 - new function AnyEvent::Socket::parse_hostport.
129 - as the bulkheads at microsoft can't even get getprotobyname reliably
130 working on their shitty fucking broken os we need to hardcode
131 some common protocol numbers in AnyEvent::Socket. How can
132 people even bother with such a pile of shit as windows.
133
134 4.21 Thu Jul 17 14:40:05 CEST 2008
135 - INCOMPATIBLE CHANGE: AnyEvent::Util::fork_call now has a prototype
136 which is incompatible to previous invocation syntax.
137 - work around more windows perl bugs in fork_call. I cannot imagine
138 why anybody would bother implementing fork in such an obviously
139 unusable way.
140 - avoid calling $do_retry if the request has already finished in
141 AnyEvent::DNS, thus avoiding an exception (reported by Anatoly
142 K. Sharifulin).
143
144 4.2 Sat Jul 12 22:42:11 CEST 2008
145 - support an "interval" argument for repeating timers.
146 - fix a bug in the pure perl event loop that caused timers to
147 be delayed under some circumstances.
148 - implement optional argument checking via PERL_ANYEVENT_STRICT.
149 - not importing anything from Event causes it to malfunction
150 and not use Time::HiRes, work around this bug.
151 - more bug workarounds against the endlessly broken Tk module,
152 seems to work now on 32 bit machines, but less so on 64 bit.
153 - minor optimisations applied to most backends.
154
155 4.161 Fri Jul 4 14:24:48 CEST 2008
156 - fixed the t/handle/02_write.t, it read after write, with the
157 assumption that all data could be written before read
158 (reported by Jim Razmus).
159
160 4.160 Thu Jul 3 04:02:21 CEST 2008
161 - re-registering signal watchers after unregistering one did
162 not work if a backend falls back on AnyEvent's default
163 implementation (also affected child watchers).
164 - new AnyEvent::Handle options: autocork and no_delay.
165
166 4.152 Sun Jun 22 14:15:44 CEST 2008
167 - allow for 32-bit perls that implement shifts differently
168 on different architectures in parse_ipv4 (reported and
169 analysed by Keiichi DAIBA).
170
171 4.151 Fri Jun 6 17:34:24 CEST 2008
172 - make sure specifying _only_ on_read and never pushing reads
173 works.
174
175 4.15 Fri Jun 6 13:00:46 CEST 2008
176 - the pure perl backend would keep some watchers alive when more than
177 one watcher was registered for the same fd.
178 - new "packstring" and "storable" read and write types
179 for AnyEvent::Handle.
180 - allow on_eof handler to be called after on_error with EPIPE returns.
181 - do not immediately call on_read callback in handle constructor.
182
183 4.14 Thu Jun 5 20:29:31 CEST 2008
184 - Fixed a bug in DNS SRV priority sorting.
185 - AnyEvent::Util::guard now reports runtime errors while
186 executing the guard block as warnings.
187 - handle 0-byte-reads just before EOF correctly in AnyEvent::Handle.
188
189 4.13 Thu Jun 5 00:47:59 CEST 2008
190 - AnyEvent::DNS only followed cname chains with length 2,
191 contrary to documentation. bumped it up to 10, thanks to
192 microsoft, the current broken-dns-config-king.
193 - AnyEvent::DNS didn't check for socket return status
194 but instead relied on perl not creating filehandles in that
195 case - too bad it gives you a bogus file handle (reported
196 and analysed by Vladimir Timofeev).
197 - fix queue management logic in AnyEvent::Handle:
198 when on_read was registered, the queue was empty
199 and no progress could be made AnyEvent::Handle would
200 enter an endless loop.
201 - correctly start reading again when the handle became
202 busy again after idling.
203 - correctly treat tls shut-downs as EOF condition
204 (for the time being, would be nice to have a callback for that).
205 - correctly call eof callback under all conditions
206 (hopefully).
207 - the timeout callback did not expect that $self can go
208 away any time.
209
210 4.12 Tue Jun 3 10:58:04 CEST 2008
211 - include AnyEvent::Intro, a tutorial for anyevent,
212 anyevent::socket and anyevent::handle.
213 - allow more options in on_error.
214
215 4.11 Fri May 30 23:42:25 CEST 2008
216 - INCOMPATIBLE CHANGE: replace ptr by real PTR lookup, provide
217 reverse_lookup and reverse_verify to replace it, support
218 v4mapped and v4compat addresses.
219 - provide more documentation for the resolver class.
220 - really replace longest run of :0: by :: in format_address,
221 also properly convert :: and ::1 again.
222 - support NAPTR record name and decode it.
223 - implement random weight sampling for SRV records, as per
224 rfc 2782.
225 - correctly abort on srv-record targets of ".".
226 - added AnyEvent::DNS::wait_for_slot.
227 - in the unlikely event of a virtual circuit connection
228 being invalidated by a delayed udp reply, AnyEvent::DNS
229 could die. this has been fixed.
230 - plug a probable memleak in the DNS vc code.
231 - use configured timeout also for VC request phase.
232 - implement timeout and max_outstanding methods
233 for resolver class.
234 - update version numbers in all modules.
235
236 4.1 Thu May 29 05:45:40 CEST 2008
237 - INCOMPATIBLE CHANGE: renamed xxx_ip functions to xxx_address
238 which mirrors their purpose better (old names still available
239 for a while). Also moved AnyEvent::DNS::addr to
240 AnyEvent::Socket::resolve_sockaddr.
241 - implement AnyEvent->time and AnyEvent->now.
242 - fix IPv6 support in pack_sockaddr.
243 - officially un-experimentalise all newly introduced code.
244 - support unix domain sockets everywhere by specifying
245 a host of "unix/" and the pathname as service.
246 - implement an activity timeout in AnyEvent::Handle.
247 - added a regex read type to AnyEvent::Handle.
248 - added a json read/write type to AnyEvent::Handle.
249 - always croak in on_error in AnyEvent::Handle.
250 - document how to subclass AnyEvent::Handle.
251 - implement AnyEvent::Util::fork_call.
252 - add support for IPv6 nameservers and nameserver statements.
253 - work around _yet_ _another_ windows perl bug in where empty
254 select masks cause errors in the pure perl backend (this
255 workaround cannot be implemented for the other event loops,
256 but EV also works around this).
257 - supply AnyEvent::Socket::address_type and make good use of it.
258 - clarify and fix the Handle documentation w.r.t $self vs. $handle
259 vs. callback arguments.
260 - add some recommends to the META.yml.
261
262 4.05 Mon May 26 19:44:06 CEST 2008
263 - some platforms ignore the rfc and prepend an extra sa_len member to
264 the sockaddr structure, cater for those. also use sockaddr_family,
265 didn't know it was there, but comes in handy for the workaround.
266 - undo the import WIN32 hack.
267
268 4.04 Mon May 26 08:03:31 CEST 2008
269 - try to work around yet another windows bug: failed connects are reported
270 as if it were out-of-band data. windows users: you suck. Only
271 EV, Glib, Event and the pure perl backend can handle this condition.
272 - optimize write algorithm in AnyEvent::Handle.
273 - properly parse PERL_ANYEVENT_PROTOCOLS and use the info correctly.
274 - tcp_connect now properly iterates through all targets.
275 - check wether IPv6 sockets can actually be created, otherwise, disable ipv6
276 support entirely. also hardcode some AF_INET6 constants for the
277 sake of perl 5.8.
278 - vastly improved nameserver/suffix detection algorithm for windows
279 (still a hack...)
280 - try to use a fallback dns server if no dns servers could be found.
281 - splatter around some local $SIG{__DIE__}'s to work around bad
282 die handlers.
283
284 4.03 Sun May 25 05:05:57 CEST 2008
285 - work around perl bugs on windows, where perl returns undocumented
286 error codes for sysread, syswrite etc.
287 - fix AnyEvent::Handle::unshift_read to really unshift and not push.
288 - AnyEvent::Handle could sometimes stumble over 0-byte writes.
289 - fix unpack_sockaddr, now works for AF_INET6 sockaddr's.
290 - updated documentation.
291 - lots of workarounds for perl 5.8 quirks.
292 - implement a more flexible type system for both reads and writes
293 in AnyEvent::Handle.
294 - support IPv6 in tcp_server.
295 - pass local hostname and port to the prepare callback in tcp_server.
296 - make types extendable in AnyEvent::Handle.
297 - croak, not die, in AnyEvent::Handle;
298
299 4.0 Sat May 24 19:58:08 CEST 2008
300 - added (experimental) AnyEvent::DNS module.
301 - added (experimental) AnyEvent::Socket module.
302 - added (experiemntal) support for TLS/SSL in AnyEvent::Handle.
303 - make condvar->end call ->send as documented.
304 - make condvar constructor support the documented cb => argument.
305 - overload condvars so you can use them instead of code references.
306 - support more of the POSIX forms instead of a pure dotted quad for
307 verbatim ip addresses.
308 - AnyEvent::Socket::inet_aton will use AnyEvent::DNS now and not fork anymore.
309 - try very hard not to freeze on broken windows perls.
310 - make on_eof optional in AnyEvent::Handle.
311 - support service names in tcp_connect and tcp_server.
312 - work around netbsd/openbsd bug causing unix sockets not to
313 become writable until empty.
314 - only make a dummy read for error detection when getpeername
315 returns ENOTCONN.
316 - defend AnyEvent::Util::inet_aton against Coro::LWP's brutal
317 override.
318 - new AnyEvent::Guard::cancel.
319
320 3.5 Sat May 17 23:17:14 CEST 2008
321 - gracefully deal with systems not defining CLOCK_MONOTONIC
322 (as opposed to not supporting the clock itself, which worked in 3.41).
323 - added AnyEvent::Util::tcp_connect and AnyEvent::Util::tcp_server
324 helpers, to replace the ill-designed AnyEvent::Socket class.
325 - added some examples (eg/connect, eg/handle).
326 - added AnyEvent::Util::guard.
327 - AnyEvent::Util now exports most of its functions.
328 - fixed a bug in *_read_chunk, where the callback was called with $self as
329 first and second argument.
330 - simplified and fixed regex handling in AnyEvent::Handle::*_read_line.
331 - fix manpage condvars examples to use new syntax.
332 - considerably improve inet_aton with EV::ADNS backend to support
333 cname chains (common dns configuration bug, e.g. with www.google.de)
334 and aaaa records if no a record could be found.
335
336 3.41 Sun May 11 19:53:13 CEST 2008
337 - work around a bug in perl 5.8.8's local. Reported by Yi Ma Mao.
338
339 3.4 Sun May 11 00:29:25 CEST 2008
340 - complete re-implementation of condvars with a hopefully much more useful
341 API (backward compatible functions exist but are undocumented).
342 - AnyEvent::Handle fully rewritten with a hopefully more powerful API
343 (still subject to change).
344 - take advantage of CLOCK_MONOTONIC, if available, in AnyEvent::Impl::Perl.
345 - provide AnyEvent::post_detect and @AnyEvent::post_detect, which
346 allows module authors to avoid forcing event loop detection.
347 (used by Coro::AIO, Coro::BDB, Coro::AnyEvent for example).
348 - remove coro backends: Coro now provides generic support for AnyEvent
349 via Coro::AnyEvent.
350
351 3.3 Mon Apr 28 09:51:06 CEST 2008
352 - added AnyEvent::Handle, AnyEvent::Socket and AnyEvent::Util modules.
353 - fix a bug in the pure perl backend that kept watchers alive
354 when multiple watchers were registered for the same fh/poll combo.
355 - add a benchmark section showing AnyEvent overhead and comparing
356 the different event loops with each other.
357 - prefer pure perl over tk when autoprobing, as it's about as fast,
358 but doesn't crash with many watchers.
359 - declare Qt support non-experimental.
360 - clarify the confusing section about the file descriptor being
361 kept alive.
362 - document the race between loading of an event module and
363 child processes exiting.
364 - support POE as "backend" (with some caveats, POE is not generic
365 enough, and darn slow).
366 - support Wx and Prima through POE.
367 - optimise perl backend to use 20% less memory and take advantage
368 of typical timeout behaviour. It can now compete with
369 select/poll-based C event loops in most cases (it is usually
370 faster than Event and Glib :).
371 - roughly cut EV memory use in half and increase its speed by 30%,
372 by removing undocumented functionality. Did something similar
373 to other event loops where possible.
374
375 3.2 Thu Apr 24 10:10:40 CEST 2008
376 - do not die when anyevent watchers are destroyed while running callbacks
377 in the pureperl backend (could only happen when two watchers are registered
378 for the same fh/poll combo).
379 - support autoloading for child watchers, was broken in all versions.
380 - implement PERL_ANYEVENT_MODEL env variable.
381 - (experimental) implement interface to the (very crashy/buggy) Event::Lib module.
382 - (experimental) implement interface to the Qt module (cannot be autoprobed).
383 - this release is IO:AnyEvent-proof.
384
385 3.12 Tue Apr 22 07:11:46 CEST 2008
386 - reinstate AUTHOR section that got lost somehow.
387 - do not hang in the testsuite with badly broken perls (activestate,
388 strawberry...), but instead diagnose the problem and continue.
389 - use INT instead of CHLD in an attempt to support broken windows perls
390 better (this decreases the test quality, unfortunately).
391 - do not send the signal to the process group
392 (no problem for CHLD, bad for INT :).
393
394 3.11 Sat Apr 19 06:57:31 CEST 2008
395 - major documentation rework.
396 - document the fact that child watchers only watch for zombies.
397 - fix the child watcher example.
398
399 3.1 Wed Apr 16 17:09:01 CEST 2008
400 - work around recurring bugs in Tk by dup'ing filehandles, the
401 only method with good success chances on Tk (the bugs apparently
402 don't get fixed anytime soon).
403 - lift the restriction of only one watcher per fh direction
404 (as the Tk bug workaround also lifts it and only Tk imposed
405 such strong limits).
406 - changed probe order to prefer coro adaptors.
407 - explain why recursion into the event loop is not supported
408 unless the backend supports it (only Coro::EV does without
409 any restrictions...).
410 - add simple manpages for all backend modules.
411
412 3.0 Mon Apr 7 21:30:23 CEST 2008
413 - Coro::Signal changed semantics, roll our own, also cleaning
414 up the Coro implementation in general.
415 - rename Coro backend to CoroEvent.
416 - add some decision helping paragraph to the manpage that should
417 help people to decide whether AnyEvent is the right thing for them.
418
419 2.9 Mon Jan 28 13:31:54 CET 2008
420 - update for EV 3.0 API changes.
421
422 2.8 Sun Nov 25 15:06:03 CET 2007
423 - waitpid can validly return 0. accept this fact of life
424 instead of reporting it to any watchers.
425
426 2.7 Fri Nov 23 11:41:14 CET 2007
427 - force use of AnyEvent::Impl::Perl in testsuite, there is
428 too much breakage outside AnyEvent.
429 - deliver signals synchronously in AnyEvent::Impl::Perl
430 or any other event loop that relies on AnyEvents child
431 watcher emulation. *Could* help with hanging testsuite
432 (except when Event or EV are installed).
433
434 2.6 Fri Nov 9 20:36:35 CET 2007
435 - fix bug in testsuite.
436 - move EV adaptor modules to AnyEvent.
437 - add Coro+EV adaptor module.
438
439 2.55 Tue Nov 6 17:41:32 CET 2007
440 - add EV to the list of supported event models.
441 - do not auto-reset pid watchers, pass pid and status to them.
442 - allow a pid of zero to watch for all children in child watchers.
443
444 2.54 Wed Jul 18 17:36:23 CEST 2007
445 - work around a perl bug that results in
446 BEGIN not safe after errors--compilation aborted without
447 any discernible reason or error message by once
448 again not use'ing strict.
449
450 2.53 Sun Jul 8 10:51:53 CEST 2007
451 - make Glib interface work again (spotted by elmex).
452
453 2.52 Wed Mar 7 18:36:16 CET 2007
454 - child watchers stopped working permanently when
455 all current child watchers were destroyed.
456
457 2.51 Mon Dec 11 21:33:24 CET 2006
458 - work around bugs in perl where eval "require Module" returns
459 true even if the module couldn't be loaded :/.
460
461 2.5 Mon Dec 11 02:15:28 CET 2006
462 - avoid $AUTOLOAD because many perls corrupt it.
463 - AnyEvent::detect forces autodetection.
464 - implement signal watchers (experimental)
465 (Tk does not support async signals (<= 804.027 at least),
466 so they might get delayed indefinitely on Tk).
467 - implement child watchers (experimental).
468 - moved default condvar implementation into base module, simplifying
469 most implementation modules.
470
471 2.1 Fri Nov 24 15:50:48 CET 2006
472 - better docs.
473 - simple testsuite.
474 - added AnyEvent->one_event method for special purposes.
475
476 2.0 Wed Nov 1 02:21:30 CET 2006
477 - INCOMPATIBLE CHANGE: poll can now either be "r" or "w" but not both.
478 - INCOMPATIBLE CHANGE: io watcher callbacks have no arguments anymore.
479 - EXPERIMENTAL:
480 new pure-perl model added, AnyEvent now always finds a suitable
481 event model.
482 - improved documentation.
483 - reduced cpu overhead.
484
485 1.02 Fri Jan 13 14:15:40 CET 2006
486 - add COPYING to clarify license.
487
488 1.01 Sun Jan 8 05:48:09 CET 2006
489 - correctly cancel Event timers, avoid memory leaks.
490
491 1.0 Sun Jan 8 05:40:58 CET 2006
492 - allow third-party interfaces to be added at runtime.
493 - fix version number.
494
495 0.9 Fri Dec 30 02:25:41 CET 2005
496 - fixed errors in the documentation.
497 - going back to using $VERSION as "load check",
498 as suggested by Jörn Reder. Let's see why I stopped using
499 this method.
500 - add 'hup' to the list of events to receive for glib
501 and generate 'rw' events for it, as some versions of
502 glib seem to require this, while this breaks other
503 (older) versions of glib.
504 - implemented PERL_ANYEVENT_VERBOSE env variable.
505
506 0.3 Sun Dec 4 10:43:33 CET 2005
507 - no changes to the code.
508 - fixed documentation.
509 - clarified some corner cases.
510 - vastly improved documentation with a long example.
511
512 0.2 Thu Dec 1 22:18:49 CET 2005
513 - check whether a valid method was called, to avoid endless loops.
514 - move condvars into their own class (cleaner, safer).
515 - don't die when some modules are not available.
516 - Tk is too broken to allow for words. Will work once Tk works.
517
518 0.1 Thu Dec 1 19:44:57 CET 2005
519 - spiced up and cleaned up for release.
520
521 0.01 Tue Sep 21 18:12:09 CEST 2004
522 - original version; copied from Convert::Scalar.
523