In this file we list changes according to some vague rules.

* About 0.99b3:

- .w3mirc (w3mir.ini on win32) is read if it exists in the directory
  w3mir is started up.
- w3mfix external 'fixup' program fixes mirrors so they are a lot more
  browseable in filesystems.  It also patches up redirects.  Most people
  will be happy with 'fixup: run' in the config file.  See w3mir
  and w3mfix documentation for further details.
  - w3mfix uses same config file as w3mir
  - Do not mix 'fixup' and 'cd'.
- Use of 'cd' is discouraged and w3mir will say so unless -q (quiet)
- Support for HTML 4.0, better support for Netscape and IE extentions
- All known bugs fixed, all 5 patches previously on the web are in this.

* About 0.99a3:

Feature/Code freeze time.  Now we only debug.  Baring serious problems
the next release will be 0.99b1 (beta).  New in this release

- We understand the BASE tag.  It's still removed, but everything is
  relative to it instead of the document origin.
- Everything is in place to fix up redirected references, in a separate
  program.

* About 0.99a2:

The todo list grew.  So -B and -I implemented.  This required a major
restructuring/reorganization.  But it seems fine now.  The
documentation has been updated to reflect this.

-B is 'batch get'
-I is read URLs from standard input

I expect to release a3 before the feauture additons halt completely.

* About 0.99a1:

- Finished all tasks in version 1.0 TODO list.  Except for those
  that will be solved by a companion program.
- Cleaned up and debugged the URL processing, the old code defied
  documentation.
- Fixed a bug in the newline conversion code.  ^M^J text comes out
  better now.
- Wrote actual documentation.

Bugfixes:
- Java scripts (and embeded style sheets) will no longer be mangled.

* About 0.99:

Person to shoot: Nicolai Langfeldt (janl@math.uio.no)

This version is supposed to become version 1.0 after some testing and
debugging.

* About 0.93:

- Switched to regular perl5 packageing, configuration and installation
  procedures.
- Stopped using libwww-perl 0.40, using libwww-perl 5 exclusively
  instead.
- -pflush option forces proxy cache to get fresh copies of all docs.
  Corresponding, but more extensive, additions in configuration file.
- Fixed bug in directory removal code.
- Now we abort with errormessage if unknown option/argument is
  specified on the commandline.
- Extraction of URLs from PDF documents.  URLs them are not edited
  as with HTML though.
- As a tribute to Getopt::Long we now accept -, --, ---, ----, -----,
  etc, as option prefixes.
- New recognized options: -help, -h, -?.
- -R commandline switch, and config file fetch-option 'remove',
  activates file and directory removal.  This is _very_ different
  from the old usage/meaning of the -R switch, but the old usage is
  bound to result in a error message.

  It will remove these files:

    1) Files no longer referenced.
    2) Files not present on server.
    3) Empty directories.

  If there were some documents that were not transfered at all due to
  transport errors only the second and third of files, and empty
  directories, are removed, so, if a document is unreferenced because
  the referer could not be retrived it will not be removed.

- Multiscope convinience directives.  Need to use a config file
  to use this.  URL: specifies the origin.  Also: specifies other
  document spaces we want to retrive.  See multiscope.cfg.
- Referer works and authentication works.  See config example: example.cfg.
- Added configuration file, fetch/ignore options and namespace 
  translations.  See the enclosed example.cfg file for options and
  syntax.  Removed some complex options from commandline.
- Revamped url selection mechanism, both ignore and fetch options
- Namespace translations, /images can be moved to inside the scope of
  retrival.  Come to think of it, other servers can also be moved
  inside the scope of retrival.
- Preserves mtime if supplied in reply header.
- Switches to disable User (-nu) and Referer (-nr) header for anonymity.
- -lc switch translates local filenames to lowercase so if originating
  server is case insensitive and multiple case combinations have been
  used for the same file links continue to work on a case sensitive
  filesystem and so on. It must be the first argument on the
  command line, or the Fetch-options: must be the first line in the
  configuration file.
- Simple html editing features: removal of sections and insertion of 
  a header with info.
- -umask switch
- -ir (initial referer) switch.
- -agent switch
- bugfixes

* About 0.92:

Moving towards 1.0 at a snails pace.  Chris Surgot has supplied win32
compatability, but I'm not sure of it's state as I haven't heard from
him in a while.

The plan for 0.92 is propper fetch-all-but and fetch-nothing-but
functionality, ability to translate some key urls to something else,
so we can handle imagemaps in a more automated manner, and a CONFIG
file, all those things will require way to many commandline switches.

* About w3mir 0.91:

Two major changes: (j)html.pl has now been replaced with htmlop.pl,
which atempts to parse html files in a reasonable, yet quick manner.
And I have started using Roy Fieldings wwwurl.pl (0.40) for a lot of
url stuff.  Chris Szurgot made it win32 compatabile.  W3mir is now
perl5 only.

- renamed jhttp.pl to w3http.pl.
- changed the activity messages.
- Now supplies referer
- -fs switch added, but not really needed thanks to Chris.
- Can save binary files directly to disk, saving memory, idea and
  code by Chris, raped by me.
- A lot of work on all sorts of things.
- -R switch mandatory
- -d switch compliments of Ed Jordan

* About the w3mir 0.9:

Person to shoot: Nicolai Langfeldt (janl@ifi.uio.no)

I have rewritten http.pl (now called jhttp.pl, the call interface is
incompatible) and rewritten/recycled w3mir itself.  w3mir now adds
some SGML tags to HTML documents so that they are more easily
recognizable as HTML.  This does not damage the ducuments in any way,
they are still legal HTML documents.  w3mir relies on this info being
in HTML files on disk, that means that document hierarchies created
with previous versions of w3mir, and other programs should be deleted
and then re-mirrored with this new version of w3mir.  If you're
unwilling to risk this please make a backup or mirror to a alternative
directory if you so wish.

If you find the need to start mirroring from scratch inconvinient
please make a script that identifies html files you have on disk and
apply the procedure html'canonize on it, that will allow w3mir to work
correctly on a old mirror.

There are still a lot of problems in the html.pl module.  Something
_is_ being done with it, but don't expect fixes to it to appear
_now_. If someone would like to voulenter to fix it we'd be happy to
accept.

Summary of changes
- Now % encodes most of the characters rfc1738 thinks we should encode,
  and at least enough of them to keep us out of trouble.
- New option: -R so you can tell w3mir the local path on the http server
  where the docs will be stored.
- New option: -t, times to (re)try getting a failed document.  Default is
  3.  The retry code is not very debugged, I need to simulate more failures
  or get a more lagged server to test against. Please report.
- Will not trample binary files (i.e. gifs and jpegs will not be corrupted)
- Will not try to use all lines of text files as urls.
- Will not save the html text of failed requests.
- Handles some cases of missing trailing /. A alarm will be sounded.
- Prints OS/network/HTTP error messages so that problems can be identified.
- New option: -P host:port for proxy http. Used with -r and -f you can
  make sure your caching server has the documents you want to read before
  you point your browser at them.  Caching server admins can use it to
  prime/refresh the cache.
- New option: -p, to pause between http requests so that the server gets a
  chance to breathe between requests.
- New option: -f, forget the retrived docs, they are not saved.  This is
  usefull for cache priming, and to some extent for checking links and
  debugging of w3mir url processing w/o eating disk space.
- New option: -q, quiet. No 'created <file> (<bytes> bytes)' messages.
  Error messaged will still be printed.
- + and other Regular Expression meta characters in urls should be less
  harmful now.

It has been remarked that all this editing of the html files does not
a 'mirror' program make.  The problem is that
1. w3mir has always edited the html docs (and some binary files corrupting
   them) to get the urls on a form so that the mirrored hierarchy can
   be browsed wholy in the new location (absolute vs. relative urls and so
   forth).
2. A reliable means of identifying HTML documents on disk was needed.
   When receiving a document from a http server there is no problem, the
   server supplies the document type, on disk the problem is slightly
   more sticky.  It turns out that SGML specifies that a document should
   contain two tags of document metadata in addition to the <HTML>...</HTML>
   container tags.  w3mir (using a new html.pl routine) injects those tags
   if they are missing and in turn use the presence of one of them to decide
   if a file is HTML or not. This will save me/us from making fools of 
   ourselves if a document looks superficialy like HTML but isn't.


* About w3mir 0.8 release:

This was a release made by Gorm Haug Eriksen (gorm@usit.uio.no). AFAIK
he concived w3mir and wrote the first (8?) versions.  His work again
was based on htget, http.pl and html.pl written by Oscar Nierstrasz.

The idea is to get only files in the hierarchy that has changed since
the last time the file was copied.  This is a Good Idea.  This saves
considerable time and bandwidht.
