Version 1.3.29 - May 9, 2006
  - Fixed crash in abalone find screen when accessed from top link.
  - Changes for compatibility with 64-bit AMD processors.
  - Upgrade configure script to use libtool 1.5.22 and autoconf 2.59.
  - Move inclusion of time.h and sys/time.h to common.h and make more portable.
  - Fixed vararg related portability problems in crash screen generation.
  - Fixed "make clean" target to clean regex directory too.

Version 1.3.28 - Feb 8, 2006
  - Fix abalone's peekconf.bt so peek works correctly.

Version 1.3.27 - Nov 20, 2005
  - Entrance link on abalone conference home page repaired.
  - Fix bug caused by loadvar not popping handle when literal array is empty.

Version 1.3.26 - Nov 9, 2005
  - Fix another file descriptor exhaustion bug in dumpuser.

Version 1.3.25 - Nov 3, 2005
  - Fix bug in loading picospan style participation files with no participation
    information.
  - Fix failure of dumpuser to correctly skip participation files for deleted
    conferences.
  - Fix a bad dependency in src/Makefile.in.
  - Fix file desriptor exhaustion problem in dumpuser.
  - Fix creation of participation directories when we have a part dir.
  - Don't terminate walks through users when we encounter a user without
    a directory.
  - Added script/lib/conflist.bt to provide standardized code for listing
    all conferences.  Not using this in 1.3 - just for forward compatibility.
  - Print something for dictionaries on stack when doing a dump.
  - In abalone, cleaner display of users with no info.
  - Add -m, -u and -v options to dumpuser to suppress some warning messages,
    suppress the uid check, and to run verbose.
  - Added some mtrace debugging hooks.

Version 1.3.24 - Sep 29, 2005
  - Add ability to generate robot exclusion metatags.
  - Make loadvar and savevar fast when given an empty array.
  - Dumpuser fixed to work on systems where httpd_id is not owner_id.
  - Convert dumpattach to XML output format.

Version 1.2.38 - Sep 26, 2005
  - Big fix to sql ident_auth files fixing mixups between logins and
      encrypted passwords.  How'd that bug survive so long?

Version 1.3.23 - Jun 21, 2005
  - Fix permission bug for attachments in private conferences.
  - Fix bug in support for Berkeley DB 4.1.

Version 1.3.22 - May 27, 2005
  - Fix bug where we failed to make sql connections before attempting some 
    user database queries.
  - Sort codes of Abalone and Pistachio changed, making abalone the default
    default interface.
  - Delete old session cookies when trying to login anonymously from the
    welcome page.

Version 1.3.21 - May 26, 2005
  - Fix a segmentation violation that occured when reading anonymously.
  - Fix dumpuser to try harder to dump encrypted passwords.

Version 1.3.20 - Mar 1, 2005
  - Fix writing of new fields to tag files.

Version 1.3.19 - Jan 26, 2005
  - Single quotes quoted as ' instead of ' to make stupid IE happy.

Version 1.3.18 - Jan 25, 2005
  - Many fixes to date parsing.
  - Fix problems with fav_sel when reading anonymously.
  - Addition of 'dumpuser' program to generate full dump of the user database.
  - Unification of (nearly) all tagfile reading/writing in new tag.c file.
  - Quoting functions now quote single quotes as '
  - Reorganization and modularization of participation reading/writing code
    with low-level code in partfile.c.
  - Add locking to ulist/glist file processing.
  - Addition of testdate test driver program.

Version 1.3.17 - Nov 23, 2004
  - Add 'publicflavors' variable, so we can make things like 'cinnamon'
    usable on sites with 'allowanon' turned off.
  - Teach abalone and pistachio to display RSS icons and autodiscovery links.
  - Links in user posts now open in a new window by default.  Setting the
    new linktonew variable to false makes them open in the same window.
  - In abalone add clickable "bbsname > confname > item number" to bottom of
    page, above response form.
  - In abalone, move "slipped in post" warning further up on page, so that it
    is more visible when long posts have slipped in.

Version 1.2.37 - Nov 23, 2004
  - Correction to documentation of htime function.
  - Add syndication defines to config.bt.in to control display of RSS URIs in
    all interfaces.
  - Changes to search code that might fix crashes on some systems.

Version 1.3.16 - Nov 10, 2004
  - Teach configure script to sense Berkeley DB version 4 correctly.
  - Fix compilation bug for Berkeley DB version 4.
  - Fix mysteriously mangled line in udb.c.
  - Fix spurious output of number '20' from email/welcome.bt script.
  - Fix configure script's overenthusiastic inclusion of dbm libraries.

Version 1.2.36 - Nov 10, 2004
  - Add itime and htime functions mostly for RSS support.
  - Include some missing includes for str.h (a portability fix).
  - Correction to documentation of 'parse' command in language.html.
  - Move link formatting macros into pistachio/links.bt and abalone/links.bt
    for compatibility with the RSS interface.
  - Rename log() function to logmsg() to avoid conflict with math library.
  - Reset http_content_type and http_location to default before printing
    a crash screen.

Version 1.3.15 - Jul 7, 2004
  - Fix bug in sess_file.c which caused session file to get huge when you
    log out.  Didn't I fix this in 1.3.13?
  - Fix script install script to also install email scripts.
  - Fixed multi-line string literal in email.c.
  - Fixes to improve handling of NULLs by sql interface.
  - Delete long obsolete regular expression configuration stuff from
    incl/config.h.in.
  - Add some untested defines for supporting Berkeley DB 4.
  - When the public/relogin script is automatically run after a session has
    expired, pass it a CGI variable "oldscript" which gives the
    flavor/scriptname of the script we tried to run.
  - Modify public/relogin.bt and public/login.bt so that when a session
    expires, the normal action is to continue the original query after the
    user has re-logged in.  Also add a "read anonymously" button to the
    relogin form, so people can opt out of logging back in.
  - Add public/logout.bt script, and use that for logging out, so that if the
    session is expired it doesn't force you to login so you can logout.
    Modify pistachio and abalone to use public/logout.bt .
  - Killsession now erases session cookies even if the session has expired
    or if it is called from a public script.
  - Removed extra "Add a Conference" button from admin/editmenu.bt.

Version 1.2.35 - Jul 7, 2004
  - Fix bug walking through selectors like "$-n" where "n" is the maximum item.
  - Fix Makefile dependencies for mksql so it gets recompiled when it needs to
    be.

Version 1.2.34 - Jun 25, 2004
  - Fix crash that occured with ident=tagfile when a didn't have an "id" file.

Version 1.3.14 - Jun 2, 2004
  - If OVERRIDE_HTTP_HOST is defined, use that instead of the HTTP_HOST value
    from Apache.
  - If DFLT_HTTP_HOST or DFLT_SCRIPT_NAME are defined, the backtalkurl and
    severurl functions should respect them.

Version 1.2.33 - Jun 2, 2004
  - The 'chomp' function now deletes trailing CR characters as well as trailing
    NL characters.

Version 1.3.13 - Jan  2, 2004
  - Fixed a problem in baai_hash.c for systems where off_t is a "long long"
    instead of a "long".
  - Fixed HTML error when abalone entrance page shows an inaccessable
    conference.
  - Fixed an ugly bug in sess_file.c, where an uninitialized variable made
    the session file get very big.

Version 1.2.32 - Jan 2, 2004
  - Belatedly add documentation of newsession and killsession to language.html.

Version 1.3.12 - Oct 30, 2003
  - Fixed a memory management bug related to attachments that was causing
    crashs while reading items in some installations.
  - Fixed multi-line string literal in email.c

Version 1.2.31 - Oct 30, 2003
  - Fixed a bug in showopt that caused a crash on sites without spell
    checkers.
  - In src directory, 'make clean' removes .gdbinit.

Version 1.3.11 - Oct 28, 2003
  - Fixed bug in src/Makefile.in which caused it to fail to correctly install
    backfile in many configurations.

Version 1.2.30 - Oct 28, 2003
  - Rewrite several Mysql queries so they don't use subqueries, because, well,
    Mysql doesn't have subqueries.

Version 1.2.29 - Sep 4, 2003
  - Fixed yet another bug in the fav_sel function, this time relating to
    isels with more than one range beyond the end of the participation file.
  - Fixed 'Goto Conference...' command on abalone resign page.

Version 1.3.10 - Sep 3, 2003
  - Taught HTML scrubber to filter out any Javascript entities.  These
    never worked anywhere except on Netscape, but they are yet another way
    to introduce executable content into HTML text.

Version 1.3.9 - Aug 6, 2003
  - Added documentation of email_new, email_body, email_recip, email_send,
    and email_close to script language reference manual.

Version 1.2.28 - Aug 6, 2003
  - Fixed a problem that may have been responsible for occasional
    misidentifications of users seen on some systems.
  - Added '#include <errnoh.>' to src/readcomp.c and src/adm_user.c.  It seems
    that 'errno' is a macro on some systems.

Version 1.3.8 - Jul 25, 2003
  - Added --with-pwauth configure option, which is only used when you have
    both --login=form and --auth=shadow.  It gives the path name of the
    authenticator to run in that case.
  - Fixed a compile error when used in that configuration.

Version 1.2.27 - Jul 25, 2003
  - Fixed crash in admin/showuser.bt that occured if you had useplan set.

Version 1.2.26 - Jul 23, 2003
  - Fixed erroneous marking of all accounts as 'invalidated' on unix systems
    put '*' in as the passwd field in the public passwd file.

Version 1.2.25 - Jul 17, 2003
  - Fixed a small memory leak in useremail function.

Version 1.3.7 - Jun 29, 2003
  - If Backtalk is built with --with-sendmail option, then Backtalk can send
    email.  The new constant canemail will be true, and the new functions
    email_new, email_body, email_recipient, email_send, and email_close can
    be used to compose and send email messages.  Fairly good MIME support
    is included - we can do attachments and alternate text formats.
  - If email is enabled, then when an account is created Backtalk runs the
    script email/welcome.bt, which sends a "Welcome" message to the new
    user.
  - Rewrote session-id generation code formerly in sess_file.c and sess_sql.c.
    It's now in entropy.c and there are two versions - one uses /dev/urandom,
    the other uses MD5 and an entropy pool stored in etc/bt_entropy.  Session
    IDs are lengthened from 13 to 24 characters, so the format of the session
    files or SQL tables changes.   People upgrading a system using an SQL
    session table will need to run "sqlinit sess" to rebuild the session
    table.
  - Fix segfault when /tmp/bt.rep cannot be created.
  - Fix segfault when CONTENT_TYPE is not defined (mostly happens with
    fronttalk).

Version 1.2.24 - Jun 29, 2003
  - When in direct_exec mode, toggle to running as user when accessing
    participation files, .backtalk file, or any other file in the user's
    home directory.  Kind of important for fronttalk.
  - Configure script complains if you try --enable-exec with non-unix logins.
  - Portability fix to btinstall.in script.

Version 1.2.23 - Jun 22, 2003
  - Fix bug in fav_sel that make "read 3" fail when the single name item was
    not in the user's participation file.

Version 1.2.22 - Jun 20, 2003
  - Fix bad test syntax in Makefile.in

Version 1.3.6 - Jun 17, 2003
  - Fix some things so that --disable-attachments doesn't cause compilation
    errors.

Version 1.2.21 - Jun 17, 2003
  - Partutil creates participation files with office info clipped off of full
    name.
  - Fixed small typo in script/public/newuser.bt
  - Privacy button on newuser screen no longer loses state after error.
    Default value corrected to be "all users".

Version 1.3.5 - Jun 13, 2003
  - Split confaccess.c out from ps_config.c, so pwauth compiles again.

Version 1.3.4 - May 7, 2003
  - Changed default setting of auto_recompile to 2.  This is probably a
    better setting for most sites.
  - Added email_fromaddr, email_fromname, and email_organization setting
    to backtalk.conf file.
  - Added --with-sendmail option to configure.
  - Other email support is in here, but in a totally incomplete state.

Version 1.2.20 - May  7, 2003
  - Fixed compile error in src/udb.c when building with --login=form option.
  - Fixed non-portable declaration of crypt in src/sess_file.c.
  - More corrections to URLs printed by Makefile when build is complete.
  - Fixed bug in handling of --aspell=/full/path configure option.
  - Modified sess_file.c to avoid negative lseeks() which were giving me
    inexplicable problems on one host.

Version 1.3.3 - Apr 30, 2003
  - Abalone and Pistachio gain tools to add/delete and edit attachments.
  - Print warnings to cfadm users in various places if the secure and
    saverep flags are not set to a safe setting.
  - Teach edit_resp enough about attachments so that it doesn't crash on
    resposnes with attachments.
  - Fixed edit_resp in abalone and pistachio so that it no longer erases
    parent response pointers.
  - Fixed crash when displaying deleted attachments in Abalone.
  - Added edit_attach built-in function to change description or type of
    an attachment.
  - Added reattach built-in function to add, replace or delete attachments
    on a response.

Version 1.2.19 - Apr 29, 2003
  - Fixed wonky permissions on temp file during edit_resp and item_retitle.
  - Fixed admin/reap confirm page so it doesn't croak deletions of really
    large numbers of users.

Version 1.2.18 - Apr 26, 2003
  - For Yapp compatibility, tolerate ulist files with lines terminated by CRNL
    instead of NL.
  - btmkuser command now creates a .backtalk file for the user, with the
    registration date included.  A command line switch is added to enable
    setting random registration dates.
  - dtime function now understands isolated years, like "2003".
  - Blank "results per page" box on Admin "User List" page now stays blank.
  - Bad user list display after deleting single user fixed.
  - Fixed admin/reap script bug that made mass deletions fail if any accounts
    were in authentication database but not identity database.
  - Function userinfo's behavior on deleted or partly deleted accounts changed
    substantially.
  - New file src/partdir.c broken out of ps_part.c.

Version 1.2.17 - Apr 13, 2003
  - For Yapp compatibility, triple up comma at start of a line instead of
    just doubling them Picospan-style.
  - Fixed a bug with link to first item on abalone confhome page.

Version 1.2.16 - Apr 9, 2003
  - Fixed typo in src/Makefile.in
  - Added empty script/lib/biolink.bt file for forwards compatibility.

Version 1.2.15 - Apr 7, 2003
  - Fixed links on bottom of welcome pages for sites with --login=form

Version 1.3.2 - Apr 5, 2003
  - Deleted --enable-debug configure option.  Instead we have runtime
    variables 'saverep' and 'secure' set in config.bt.
  - Added --enable-attachments configuration flag.
  - Implemented attachment archive where attachments to responses can be
    stored.  Added 'get_attach' and 'make_attach' functions.
  - New system variables 'canattach' and 'attachments' added.  'Attachments' is
    an input to post_item and post_resp, and an output from read_resp.
  - 'kill_item' deletes attachments, as does 'erase_resp'.
  - Pistachio and abalone scripts sets updated to support reading and posting
    of attachments.
  - Default timeout in config.bt set to seven minutes.  Would anyone really
    want to wait longer that that for a web page?
  - Support for multipart/form-data POST queries in cgi_query.c.
  - Added cleanattach program, to erase dropped attachments.
  - Added dumpattach program, a diagnostic tool.
  - Total redesign of the way repeat files work.
  - The config.bt script is now run *before* authenticating the user.
  - Added mimename command and misc/mimename file for giving names to mime
    types.
  - cgiquote function quotes control characters.
  - Dictionary dump code handles control characters in strings better.
  - Broke vstr.c out of format.c and substantially rewrote it, making more
    use of realloc() which is sometimes more efficient that malloc() and
    memmove.  Want to use this in several other places.
  - Broke debug.c out of main.c.
  - Attempt to access pages anonymously when no anonymous reading is enabled
    runs public/login.bt instead of public/welcome.bt when sessions are used.

Version 1.2.14 - Apr 5, 2003
  - Fixed bug in handling of control characters in jsquote.
  - Fixed compilation error in hashfile.c when using native GDBM or Old DBM -
    which hardly anyone ever did.
  - Added src/sess_stupid.c for sites that put logins in cookies.  Yech.
    Not tested.
  - Some fixes to configure.in, mainly relating to SQL sites.

Version 1.3.1 - Mar 14, 2003
  - Support for linking to external bio page instead of backtalk bio page
    in abalone interface.
  - Added 'scriptname' system constant.

Version 1.2.13 - Mar 13, 2003
  - Fixed missing abalone jump table in case when no responses where shown.
  - Fixed weird stack underflow crash that occurs when posting items.
 
Version 1.3.0 - Mar 11, 2003
  - Abalone much revised to use cascading style sheets.  css directory added
    to distribution and install scripts modified to install it.
  - Deleted vanilla flavor from the distribution, and made it a separately
    distributed interface.
  - Deleted src/adm.cgi from distribution (hasn't been used for a long time).

Version 1.2.12 - Mar 11, 2003
  - Fixed bug that caused backslashes to accumulate when parenthesis were used
    in full names in Backtalk-style participation files.
  - Added incl/localconfig.h
  - Updated and expanded doc/auth.html.
  - Removed some debug code from empty posting error message.

Version 1.2.11 - Mar 8, 2003
  - Fixed buffer overflow in session.c.
  - Added auth_none.c for use with foreign login programs.
  - Added AUTO_CREATE_DIR option to automatically create home directories if
    they are missing.
  - More portable use of ctype functions in format.c
  - Actually got script/public/showopt.bt into the distribution file, where
    it was supposed to have been since 1.2.2
  - Refixed the compiler bug in adm_user.c that was supposed to have been
    fixed in 1.2.10.

Version 1.2.10 - Mar 5, 2003
  - Expand out any HREF="conf:whatever" attributes in tags in HTML postings.
  - Strip out all "onLoad" or "onClick" type attributre from tags in HTML
    postings.
  - Strip out any HREF="javascript:" type attributes from tags in HTML postings.
  - Add to allowed tags list:  <AREA>, <COL>, <COLGROUP>, <DFN>, <LISTING>,
    <MAP>, <MULTICOL>, <SPACER>, <TBODY>, <TFOOT>, <THEAD>, <VAR>
  - No longer allow tag:  <EMBED>
  - Delete all closing tags with no matching opening tag.
  - Delete content of <SCRIPT>...</SCRIPT> tags.
  - In Yapp_format mode, don't put <BR> on the ends of lines in <PRE> type
    environments.
  - In Yapp_format mode, always put a space after inserted <!-- strings.
  - Unhtml converts &QUOT; to " mark.
  - Unhtml treats <DIR> and <MENU> just like <UL>
  - Clickify nntp: and telnet: URLs.
  - Definition of filter macros format_conf, format_item, and format_resp
    changed:  they now return only URL not whole <A> tag.
  - Revised format.c to use tag table built at compile time.  This is in
    src/tags.c with header incl/tagdefs.h being built from it at compile
    time by src/mktagdefs.c.
  - Support for Unix's without strncasecmp()
  - Fixed crash in abalone when opening non-existant conference
  - Fixed compiler errors in version 1.2.9 comp_func.c, adm_user.c, and
    ps_post.c .
  - Fixed segfault when an program crashes before system dictionary is
    initialized.
  - Fixed mishandling of post_log_file constant in version 1.2.9 scripts.

Version 1.1.24 - Mar 5, 2003
  - Fixed incorrect declaration of lmemcmp() in str.h.

Version 1.2.9 - Mar 1, 2003
  - Pistachio and abalone gain ability to display most recent responses on
    begin page and/or on a separate page, if post_log_file is enabled.
  - In abalone and pistachio, if you access a response via the peek script,
    it doesn't necessarily mark the whole item read.  If the unread responses
    before the response can be fit on the same screen, they are included and
    things are marked read as usual.  If there are too many unread things
    before it, then nothing is marked read.  Links to responses from the
    recent response list work the same way.
  - Miscellaneous small cosmetic changes to pistachio entrance page.
  - Added 'post_log_file' system variable.  If defined, 'post_resp' and
    'post_item' call user supplied 'resp_log_format' and 'item_log_format'
    functions to generate lines to log.
  - Created script/lib directory as repository for shared code.  Moved
    userinfo.bt into it.
  - New script/lib/postlog.bt provides definitions for typical
    'resp_log_format' and 'item_log_format' functions.  And
  - New script/lib/readpostlog.bt provides functions for parsing typical post
    log formats.
  - Fixed formatting of "unreadable conference" lines on Abalone begin page.
  - Fixed some flakiness in opening home directory files for anonymous users.
  - Updated doc/auth.html.

Version 1.2.8 - Feb 26, 2003
  - HTML responses now get automatic clickification of various conf: and
    http: things, just like plain text responses do.
  - Yapp compatibility fix:  learn to read conference acl files, which give
    more flexibility in specifying conference read/write access.  (But not
    nearly as much as I'd like.)
  - Yapp compatibility fix:  6th line of conference config file in Yapp is used
    for email addresses.  So if building with YAPP_COMPAT, put conference
    title in seventh line instead of sixth.
  - Yapp compatibility fix:  Modes in conference config files can be specified
    by keyword instead of number.
  - Added ident_yapp identity module.  This is for compatibility with Yapp
    installations that do not use Unix accounts.  Supports case where user
    home directories are owned by the httpd account instead of the cfadm
    account.
  - On pistachio item list page, changed "Current Items" to "Unforgotten
    Items".
  - Fixed a response counting bug in 'count_sel' that came up in some
    situations.  Remember:  $ is infinity, not the last response.
  - Fixed a bug in the abalone spell checking code for lazy HTML responses.
  - Support for mixed-case login ids.
  - newuser function upgraded to be able to create Yapp-style accounts.
  - Various changes to accommodate possibility of email address being in the
    identity database.  Added 'changeemail' and 'useremail' builtins, and
    modified 'newuser' to save email addresses.
  - Added 'tail' function to tail a file.
  - Split 'maypost' variable into 'maypost' and 'mayresp' so permissions to
    post items and responses can be separately controlled.
  - Split 'userlist' variable into 'userlist' and 'grouplist' since with acls
    some conferences have a glist but not a ulist, or vice versa.
  - Added 'acl' file handle for acl file access.
  - Added 'yapp_format' constant, which causes response formats to be handled
    in a strange but web Yapp-compatible mode.
  - Small performance enhancement to formatting of plain responses.
  - Slightly improved parsing of HTML tags for unhtml and cleanhtml functions.
  - Builtin 'in' function generalized to handle literals.

Version 1.1.24 - Feb 26, 2003
  - Fixed crash in ingrouplist function when there is no group file.

Version 1.2.7 - Feb 17, 2003
  - Abalone gets a rather nice spell checker.
  - In abalone, status line messages clarify erase/edit/hide/unseen buttons on
    mouse over.
  - In abalone, pop up a confirmation box if a command is selected while there
    is text in the response box.
  - In abalone, pop boxes for 'Goto Conference..." and "View Responses..."
    are generated directly from Javascript, so they come up faster, without
    having to wait for an http request.  Other popups can be configured to do
    this, but there is an upfront penalty, so it is only useful for commonly
    used pop-ups.
  - In abalone and pistachio, terms for 'unseen', 'erase' and 'hide' may now
    be changed in the config.bt file.  More useful for abalone than pistachio.
  - In abalone, preload values in resprange popup and make them autoclear
    when clicked.
  - Fixed bug with closing of abalone popups that manifested in Mac IE and
    probably other browsers.
  - Fixed bug in abalone where items were not in favorite-first order 
    if you select an item from item list and then do "next item".
  - Added 'jsquote' built-in function, to quote strings Javascript style.
  - Added 'undefconstant' built-in function, to undefine constants.
  - The 'spell_check' built-in function can now optionally return guesses at
    the correct spelling of misspelled words.
  - The 'spell_ignore' system variable was added.  It holds a comma-separated
    list of words the spell checker should not consider misspelled.
  - Fix cgiquote function to also quote ' and " signs.
  - Made a start toward implementing an API interface to the Gnu aspell spell
    checker.  Not yet functional.
  - Fixed "Admin URL" printed by Makefile when building with --login=form
    option.

Version 1.2.6 - Jan 21, 2003
  - Fixed bug in fav_sel function that mishandled $ signs which were not part
    of a range in selectors.

Version 1.1.23 - Jan 13, 2003
  - Fixed grammar in public/welcome.bt
  - Fixed unclosed comment in sess_file.c

Version 1.2.5 - Dec 3, 2002
  - In abalone and pistachio, fixed some bugs that caused pseudonyms to be
    lost when a response slipped in.
  - If reading item ranges like 0-$, ignore the 0 instead of crashing. 
  - Fixed crash when favoring an item after doing a scroll in pistachio.
  - Wrote much more of doc/format.html.
  - Added HTTP_USER_AGENT and HTTP_REFERER to the no-script dump screen.

Version 1.1.22 - Dec 3, 2002
  - Fixed crash in vanilla when attempting to browse unreadable confernces.
  - Fixed peek script so that peek:conf:3:-4 shows last four responses, as
    it should.

Version 1.2.4 - Oct 28, 2002
  - Abalone gets option to turn off automatic submit on pulldown menus.  Opera
    seems not to allow you to select nothing once you've clicked on a pulldown.
  - Fix cgiquote function to also quote # signs.
  - Crash screen includes version number.
  - Fixed crash when anonymously reading conference list in vanilla.

Version 1.1.21 - Oct 14, 2002
  - Fixed "allowgraphics" switch, so that you really can disable images but
    not HTML in a conference.

Version 1.2.3 - Oct 5, 2002
  - Pistachio and abalone gain favor/disfavor buttons on read page.
  - Pistachio and abalone item lists include "favorite" tags and put favorite
    items first.
  - Pistachio and abalone read commands show favorite items first.
  - Pistachio and abalone users can configure auto-favor for posting items
    and responses.
  - Pistachio and abalone allow users to set their own item titles.
  - Read button on pistachio "item list" page now offers more item ordering
    options.
  - Default item ordering can be configured in pistachio on a per conference
    basis.
  - Pistachio config file now allows you to set background images, and
    text and highlight colors.
  - Fairwitnesses can now set background images and highlight colors for
    their conferences in Pistachio.
  - Pistachio gains option to allow users to set colors and buttons and
    background images on a per-conference basis.
  - Pistachio "next item" logic modified slightly, so that double-clicking
    the button doesn't cause new responses from the next page to vanish.
    Ditto for "read new" button.
  - Internal links can use . or : as delimiters, like conf:general.3.34
    or item:test:102.  This improves compatibility with various other
    conferencing systems.
  - Ability to read/write alternate participation files enabled and much
    debugged.
  - Partutil extended to handle participation extension files.
  - Added favorite support in interpretor:  fav_sel function to move
    favorites to front of an item selector and rfav and ifav variables to
    control if items become favorites when responded to or posted to.
  - Added jointomark function to interpretor.
  - When running in hide_html mode, strip meta-characters out of all plain
    text versions of responses, including both those entered as plain text
    and those entered as HTML.  Some browsers generate them, and command-
    line users don't want to see them.
  - Configure script gains with-dmalloc option which build backtalk with
    the dmalloc library for memory debugging.
  - Added various cleanup routines used only for memory debugging.
  - Open error file only if we crash, instead of on every run.
  - Fixed bugs in loadvar/savevar that prevented them from working properly on
    system variables.
  - Fixed cgiquote function to also quote newlines.
  - Fixed some missing dependencies in regex/Makefile.in and src/Makefile.in.
  - Fixed 1.2.2 bug that broke detection of slipped in responses in abalone
    and pistachio.
  - Fixed 1.2.2 bug that stopped interfaces from showing you your last response
    when you did a read new.
  - Fixed Abalone bug where begin page occasionally showed the list of all
    conferences instead of your list of hotlist conferences.
  - Fixed crash in abalone preferences setting on systems with unix accounts.
  - Fixed erroneous csels when entering an abalone conference by clicking on
    it's name in the hotlist.
  - Pistachio gets some anchor tags, not used for anything.
  - Don't attempt to run partutil if executing directly.
  - Give partutil an friendlier and more informative error message.
  - Set default script timeout to a more conservative value.

Version 1.1.20 - Oct 5, 2002
  - More portable declaration of memchr() in snprintf.c

Version 1.1.19 - Sep 20, 2002
  - Fixed bug in checking access to glisted unix conferences.
  - Correction to Unix install instructions.
  - Configure script fixed for compatibility with SunOS 4 version of sh.
  - Fixed memory leaks in read_text, ogrep, sgrep, undef and inlist functions.

Version 1.2.2 - Sep 9, 2002
  - Performance improvements to code for scanning in-memory copy of user's
    participation file.
  - Added 'serverurl' and 'backtalkurl' functions, to get URL of scripts
    more accurately (especially with respect to deciding if we are under
    http  or https).  Pistachio, abalone, vanilla, public and admin interfaces
    modified to make proper use of these constructs.
  - Abalone "Resign Conference" command gets pop confirmation box.
  - Abalone gets "Goto Conference..." options on all pulldown menus.  These
    prompt for the conference names in popup boxes.
  - Abalone search page gains item range box.
  - Abalone item list flags retired and linked items.  Multiple state icons
    displayed for items with multiple settings.
  - Abalone confhome page gets checkboxes on each listed item.  "Read new", 
    "Read all", and "search" commands restrict to check items if any are
    checked.  Versions of "forget" and "remember" that act on all checked
    items added.
  - Abalone read page gets response range command with popup box.  The respond
    command on the pulldown now uses a popup to prompt for the response.
  - Abalone gets fairwitness commands:  link, retire, unretire, freeze, thaw,
    delete on confhome page.  retitle, retire, unretire, freeze, thaw, delete
    on read page.  Can edit conference settings, change conference password,
    and edit ulist.
  - Abalone can change password from preferences screen.
  - Abalone catches slipped in responses, allowing you to edit and repost, if
    you like.
  - Abalone gets help pages in most places.
  - External location redirects used in various places in Abalone and Pistachio
    to ensure that "reload" operations don't repeat operations.
  - Added script/public/showopt.bt which allows the backtalk configuration to
    be viewed over the web.
  - Backtalk -r repeat function upgraded to handle arbitrarily long query
    strings.
  - Can read and write several alternate participation file formats - plain
    old picospan, a new tag-based format, or a picospan file with a parallel
    tag file to store extra fields in.  This gives us the capability to store
    arbitrary per-user/per-conference and per-user/per-item settings.  However,
    it is mostly disabled in this release, since the extensions have not been
    fully tested.
  - Added get_conf_note, get_item_note, set_conf_note, and set_item_note
    commands to access extra particiption file fields.
  - misc/Makefile.in becomes more careful about not clobbering installed copy
    of backtalk.conf.

Version 1.1.18 - Sep 9, 2002
  - Fixed abalone's "Read All Conferences" command to work correctly on systems
    with conference lists in public.txt files.
  - Fixed abalone to not crash on password protected conferences.
  - Fixed pistachio quoting bug with slipped in responses.
  - Fixed abalone's loss of nextnew variable when posting.
  - Fixed bug that caused Abalone to show wrong response when you view
    hidden responses.
  - Fixed infinite loop on unclosed <!-- HTML comments.

Version 1.2.1 - Aug 25, 2002
  - Small improvements to abalone's conference list and hotlist editing.
  - Small bug fixes to admin tool for editing hotlists.
  - Added dictionaries as a first class data type.
  - Changed syntax of 'begin' function.
  - Added 'dict' function.
  - Internally, all dictionaries now use a true hash search instead of binary
    search.
  - 'length' function extended to work on dictionaries.
  - 'get' function extended to work on dictionaries and strings.
  - 'put' function extended to work on dictionaries, but not strings.  Making
    it work on strings will require major revisions to the handling fo strings.
  - Added 'cflist_array' function to load conference hotlist into an array.
  - Parsing of .cflist moved from scripts into C code.
  - Can now read .cflists with more than one conference per line (though we
    never write them that way.
  - Added 'known' function to test if variable is in a dictionary.
  - added 'newbie' flag, which is set when a user joins a conference for the
    very first time.  Darn, why didn't I call it 'virgin'?
  - New blue color scheme for abalone (contributed by Tony Publinski).
  - Can tolerate conference participation files with missing fairwitness and
    time limit lines.
  - getput.c file added to source.
  - src/sysdict.c is now generated by src/mksysdict.c .
  - Fixed bug in 'cvn' functions - literals it generated where searched for
    in user dictionaries before system dictionary.
  - Broke token deallocation functions out from src/stack.c to src/free.c .
  - Added ps_cflist.c file.
  - Added first draft of doc/format.html.
  - cgiquote also quotes question mark characters.
  - Normalized indenting of C source.
  - Miscellaneous small updates to doc/glossary.html.

Version 1.1.17 - Aug 25, 2002
  - Fixed memory management bug in removeuser.
  - Deleted an accidentally leftover debug command in pistachio/openconf.bt.
  - Spell checking for item entry fixed in pistachio.

Version 1.1.16 - Aug 23, 2002
  - Fixed abalone so it no longer creates a participation file for every
    conference listed on the begin page.
  - Added 'snoop_conf' function to open conferences for snooping.
  - Fixed a memory management bug in 'put' function.
  - Fixed quoting of user names on pistachio participant page.
  - Fixed order of head/title tags on pistachio read page.

Version 1.2.0 - Aug 8, 2002
  - Added support for Yapp 3.0 participation file directory (thanks go to
    Tony Publinski for help with Yapp 3.0 file formats and testing).
  - Added --with-yapp3 configuration option.
  - Generalized support for public.txt files, allowing you to configure
    regular expressions to parse your favorite local format.
  - Added 'pathname' function to convert filehandles to full paths.
  - Bio scripts use 'pathname' to construct paths to other user's .backtalk
    and .plan files instead of doing it manually.

Version 1.1.15 - Aug 8, 2002
  - Fixed Newuser URL printed out by Makefile.
  - Fixed crash when entering interfaces from welcome page when anonymous
    reading is disabled.
  - Fixed crash on abalone preferences screen.

Version 1.1.14 - Jun 27, 2002
  - Various tiny documentation fixes.

Version 1.1.13 - Jun 26, 2002
  - Fix configure scripts to accept URL with https: prefixes.
  - In abalone, after jumping into the middle of the list of active conferencess
    on the entrance page or the list of new items on the confhome page, then
    the next conference and next item commands act just like a normal 'read
    new'.  Previously the worked weirdly or not at all.
  - Fix compile time error in showopt.c for people who oddly define YAPP_COMPAT
    or PICOSPAN_COMPAT but not PARTUTIL.
  - Abalone navigation pulldowns now have Javascript to make them automatically
    execute without pushing the go buttton.

Version 1.1.12 - Feb 12, 2002
  - Words like 'Fairwitness' and 'Conference' now configurable in Abalone.
  - Fixed bugs in permission checking for retitle, hide, erase.
  - Fixed retitle to work on previously opened items.
  - Fixed duplicate results to search when pattern matches both author name
    and response text in pistachio and abalone.
  - Some abalone scripts made more tolerant of missing parameters.

Version 1.1.11 - Feb 6, 2002
  - Added tutorial document.
  - Updated location of Backtalk homepage in documentation.
  - Fixed config script's failure to find cpp on some machines.
  - Admin interface has a config setting to tell which regular interface to
    jump into when you click on a conference name, breaking last dependency
    on Pistachio.
  - Small fixes to byte order detection code.
  - Fixed a bad link on admin/editmenu.bt.

Version 1.1.10 - Feb 2, 2002
  - Implementated mysql support.
  - Abalone gains ability to change user's conference names.
  - Added 'sleep' function.
  - Added 'check_partic' function.
  - Finished implementation of sql session table option.
  - Configure script does a better job of noticing if you specify a owner-id
    or httpd-id that does not exist.
  - 'Make install-binaries' creates cgidir if it doesn't already exist.
  - Finished writing doc/auth.html guide to custom authentication systems.
  - Fixed many bugs in SQL support.
  - Fixed bug with quoting in edit pages for pistachio and abalone.
  - Fixed bug that caused erase_resp to seg fault when censored log was
    unwritable.
  - Fixed pistachio/editform.bt to use explicitly non-wrapping textareas for
    better behavior on IE.
  - Fixed core dump in sqlinit.
  - Rationalization of usage of CFLAGS, CPPFLAGS and LDFLAGS variables in 
    src/Makefile.in
  - Added WRAP=OFF to TEXTAREA tags when editing files.
  - Added CSS stuff in headers of pages with TEXTAREAs to try to force
    monospaced fonts in textareas.
  - Added doc/admin-menu.html to distribution, which had been accidentally
    omitted since it was written oh these many years ago.
  - Improve lynx compatibility of html install documentation pages.
  - Flag -session=form added as synonym for -session=cookie.

Version 1.1.9 - Jan 17, 2002
  - Bug fix to in_sel function, which wasn't returning a value when given a
    non-numeric selector.
  - conf_alias function clips names with newlines at the newline instead of
    rejecting them.
  - put command now grows array if you store a value past the end.
  - Correct documentation of link_item command.

Version 1.1.8 - Jan 2, 2002
  - Pistachio item list includes name/id of item author.
  - Added motd.html to file handle list.
  - Pistachio's formatting of the /etc/motd file improved and support for the
    bbs/motd.html file added.
  - Added motd display stuff to abalone.
  - Added locking to transaction logs.
  - Retitle command strips leading spaces and fails on blank title.

Version 1.1.7 - Nov 28, 2001
  - Total reorganization of authentication database and identity database
    code, putting code for each type of database in a separate file, so that
    new database types can easily be added.
  - The --auth= and --ident= configure flags now can be used to pull in
    custom authentication and identification modules written by the installer.
  - Elimination of dynamically loaded usradm and grpadm modules which used to
    contain user and group creation and editing functions.  Dividing things
    up by database type rather precluded dividing things up by operation type,
    so this code is now always linked in.  So the whole -dynaload option,
    which never made that much sense in the first place, makes even less now.
  - SQL interface provided through sql_pgsql.c, sql_mysql.c, sql_msql.c etc.
  - mksql program compiles SQL query templates from the sql/<server>
    directories into sqlqry.c, which is compiled into various programs that
    need to be able to do SQL queries.
  - Support for optional SQL authentication databases provided by auth_sql.c
    module, and support for SQL idnetity database through ident_sql.c module.
  - Broke next_uid() out of udb.c into nextuid.c and added an alternate version
    that uses SQL sequences instead of a file.  This is used if an SQL
    identity database is used.
  - Added sqlinit program for automatic creation of initial database tables.
  - Added backtalk.conf configuration file for some runtime configuration
    settings that don't make sense in config.bt because (1) some of the
    programs that need them don't have a backtalk interpretor built in, and
    (2) some of the data is sensitive and should not be stored in insecure
    backtalk variables.  For now this is mainly SQL server configuration
    information.
  - Resumed work on the session ID code originally written for version 0.9.2.
    Config flag --login=cookies compiles it in.  Added new system constant
    sessions (true if we are using session), and expire_session which gives
    number of seconds between requests before sessions expire.
  - Pistachio, Abalone, and Vanilla gain logout buttons when built with
    sessions.  Login links are also fixed.
  - Scripts in the public directory no longer even try to authenticate the
    user when they are run.  They are always run anonymously.
  - The --disable-edituser flag can be invoked to build a system without
    user editing.
  - More appropriate menu options for anonymous users in Abalone.
  - Dropped support for systems with neither stdarg.h nor varargs.h.  So much
    of Backtalk requires ANSI C that it is hardly useful to bend over backwards
    to support pre-ANSI C in this one instance, and it was starting to get in
    the way.  We continue to support varargs.h, although doing so is likely a
    waste of energy.
  - Added Mark Martinec's portable snprintf() functions to the distribution,
    and did some other fiddling so that we have vprintf(), vfprintf(),
    snprintf(), vsnprint(), asprintf() and vasprintf() on all platforms.
    However vsprintf(), asnprintf(), and vasnprintf() are not supported.
  - Backtalk 'newgroup' command no longer takes list of members as an argument.
    We never used this feature, and it was clumsy to implement in group
    modules.
  - Fixed 'More Matches' link in the admin/listusers.bt to correctly propagate
    forward current search settings.
  - Fixed some array overflow bugs in userinfo.bt.
  - Fixed some stray characters printed by userinfo.bt when user has
    no .backtalk file.
  - Fixed error handling in admin/changeuser.bt script.
  - Fixed various bugs in abalone's listing of hotlist conferences.
  - For pistachio and abalone, if you view your own bio by clicking on a
    login on a response, we default to not giving an edit form right away.
    Instead you get the same display as other users, only with an edit button.
  - Fixed 'quote' command to also convert " to &quot;
  - Fixed / division command.
  - If building with ID_GETUID and another ID_ option, -d switch on command
    line forces use of getuid() to identify user.
  - Improved parsing of public.txt files in pistachio, abalone, and vanilla.
  - Added "forget" and "remember" commands to read page of abalone interface.
    How did I forget forget?
  - Opening the conference name '?' now gets you the default conference.
  - Detect and configure for systems without random().
  - Improved generation of salt for password encryption.
  - Don't use 'userinfo.bt' file on systems with /useplan defined.
  - Added "conf_dir" command which returns conference directory name without
    opening conference.
  - Backtalk interpretor gets -v flag, that causes it just to print out its
    version and configuration.  The showopt built-in command does the same
    thing.
  - Added "last_in_conf" command that returns the time you were last in a
    conference, if you ever were.  This is for deciding whether to display
    bulletins and such.
  - Added "cache_conflist" command which causes the conflist to be cached in
    memory, for use on page with a lot of conference lookups.  Abalone and
    pistachio modified to use this.
  - Added "in" command to test if an array contains a given value.
  - Conf_new command now also returns the number of unseen responses.
  - Added file handles for .cfonce, .cfrc and for system and conference rc
    and welcome files.
  - Setting new global constant "editfrozen" enables hide, show, erase,
    retitle and edit of responses in frozen items.

Version 1.1.6 - Oct  1, 2001
  - Fixed some minor compilation bugs.

Version 1.1.5 - Jun 18, 2001
  - Added missing help page for the pistachio participants page.
  - Added lots more <BASE> directives to help out browsers that are bad at
    following relative URLs.
  - Added 'favicon' system variable.  Taught Backtalk to ignore requests for
    scripts named 'favicon.ico' unless this variable is set.  If it is set
    respond by sending the file whose path is given.
  - Fixed crash when there are trailing slashes on the URL.  We ignore them.
  - Fixed crash that occured when abalone attempted to read a non-existant
    item.
  - If the script name given refers to a directory, then execute the 'begin'
    script in that directory.
  - Added top-level 'begin' script which runs the begin script of whichever
    interface best fits your browser.
  - If a newline is given in an item title, convert it to a space instead of
    crashing.
  - Recognizes and properly flags Picospan "sync" items when rebuilding sum
    files.  Backtalk doesn't do anything with these, but need to flag them
    correctly for Picospan compatibility.
  - Shorter, less obsequious crash screen and dump for bad script names.
    These are too commonly the result of silly users and broken browsers to
    give the full treatment.
  - Fixed crash when you don't enter a pattern on pistachio/findform.
  - Fixed crash on vanilla user search page.
  - Added 'dumpsum' program to distribution.  This just generates a human
    readable dump of a binary sum file.
  - Added 'sumcheck' program to distribution.  This checks sum files against
    the conference directory, and either reports or repairs errors.  Can also
    generate new sum files.
  - Fixed a compile time error when compiling without the SPELLCHECK option.
 
Version 1.1.4 - Jan 24, 2001
  - Added btinstall script as tool for installing separately distributed
    interfaces.
  - Fixed broken pistachio 'Edit User List' button.

Version 1.0.9 - Jan 24, 2001
  - Converted from shareware to GPL freeware.
  - Fixed some bugs in scripts for the creation and use of passworded
    conferences.
  - Fixed open_conf function to set 'secret' variable correctly for conferences
    that are both ulisted and passworded.
  - Fixed a inconsistancy how pistachio/begin and pistachio/optform think
    the summary option defaults when not defined.

Version 1.1.3 - Jan 21, 2001
  - Added minimal spell checking into pistachio 'preview' pages.  I'd like to
    improve this later.
  - Added 'spellcheck' function, 'canspell' constant, and 'spell_lang'
    system variable.
  - Added --with-ispell configure option.
  - Revised the way logo images are defined, allowing two different image
    definitions.
  - Fixed lack of stickiness of --with-picospan and --with-yapp configure
    options.
  - Fixed site name error in public/newuser.bt script.

Version 1.0.8 - Jan 21, 2001
  - Fixed a bug that could cause the last tag in an HTML response to disappear.
  - HTML sanitizer now insists that <TABLE> <TR> and <TD> tags be properly
    nested and properly closed.

Version 1.1.2 - Jan 11, 2001
  - Added support for group file, identifying administrators based on their
    group assignment.  Added 'groups', 'ingroup', 'groupid', 'groupname' and
    'dfltgroup' group info request commands and 'newgroup', 'newgroupmem',
    'delgroup', 'delgroupmem' and 'changegroup' administrative commands.
  - New 'newuser' built-in backtalk command obsoletes the makeacct program.
    The 'makeacct' program is dropped from the distribution.
  - New 'new_conf' and 'del_conf' built-in commands obsolete the 'confutil'
    program.  The 'confutil' program is dropped from the distribution.
  - Also dropped the 'linkconf' program which has been obsolete for a hundred
    years or so.
  - Account creation can now be done by members of the 'gradm' group,
    even if we have ONLY_ADM_CREATE set.  Such accounts can be created only
    in the groups the 'gradm' user is a member of (but not in group 'gradm').
    Members of this group can also change passwords, and fullnames and
    delete accounts which are in their primary group.
  - Backtalk can now be built either as a single binary, or as a core binary
    which doesn't have the more rarely used functions compiled in.  Instead
    it loads these on demand from special shared library files.  Rolled stuff
    from Gnu's libtool package into the distribution to support this
    somewhat portably.
  - Added userinfo.bt script on top level which allows the set of questions
    asked of newuser to be customized from site to site.  Modified pistachio,
    vanilla, and abalone bio.bt and changebio.bt scripts to use this too.
  - Anonymous users can now always run any script in the 'public' script
    directory, not just the 'welcome' script.
  - New admin version of the newuser page allows creation of accounts in 
    arbitrary groups.
  - New admin version of user search page allows much more sophisticated
    queries.
  - New Admin user listing pages, with many new options, including mass
    deletion of accounts selected by various criteria.
  - Admin interface completely severed from pistachio interface.  Admin
    pages have more cross links so 'back' button isn't needed as much.
  - Added 'glist' file, which is like a conference ulist file, but lists
    groups of users who can access the conference.  Added ability to edit
    glist file to pistachio.  Add (*glist) file handle.
  - Added newuseropen flag, which can be set in the configuration file to
    control whether unauthenticated users are allowed to create themselves
    accounts, and determine whether those accounts are validated.
  - .cflist and dflt.cflist can contain (1) comment lines starting with
    # signs which some interfaces may print as headings in your conference
    hot list, (2) tag lines starting with (#:) which some interfaces may
    use and placemarks in conferences hot lists and (3) conference names
    like kids:barney or 121:barney, where the first part is a group name
    or ID, and the second is a conference name.  The conference is only
    "on the list" if you are in that group.
  - Added anonymity, mayseealias, mayseefname flags which allow hiding of
    user names from unauthenticated users, or from all users.  Modifications
    to vanilla, pistachio, and abalone to support this reasonably cleanly.
  - In pistachio, whether the 'item list' button lists all items or only
    new items by default is now configurable both by the installer and
    each user.
  - New 'loginlen' command returns maximum number of char in login ids.
  - New 'split' command slices a string into all of its words.
  - The 'dont_sort' configuration option is moved to the system-level
    config.bt file, and renamed 'many_users'.
  - The 'dtime' command now takes things like 'beginning of last tuesday' or
    'end of next tuesday' so that you can override the default past/future
    start/end interpretation.  Also unqualified 'the beginning' or 'the end'
    gives start and end of time.
  - New 'chomp' command strips trailing newlines off a string (ala Perl).
  - Added 'cgiquery' variable which returns original query string.
  - Display date/time on crash screen.
  - Fixed crashs in admin/editmenu.bt and admin/editalias scripts.
  - Split user.c into user.c and userfunc.c
  - Bug fixes to searching in vanilla.
  - Minor fixes to preconditions in src/Makefile.
  - Fixed bomb in 'unseen' link in abalone.
  - Fix some warning messages that appear on machines with 64-bit OpenBSD
    machines.

Version 1.0.7 - Jan 11, 2001
  - Fixed minor bug in code to recognizing retired items immediately after
    a sum file has been deleted.
  - Fixed some rarely exercised bugs in reading item status in view.bt and
    edit.bt for all interfaces.
  - Corrections to documentation for read_resp command.

Version 1.0.6 - Jan  7, 2001
  - Fixed several bugs in 'dtime' string-to-time conversion function.

Version 1.0.5 - Dec 29, 2000
  - Fixed a bomb that occured when peeking at a non-existant item.
  - Fixed a memory allocation problem in caching of user information.

Version 1.1.1 - Jun 26, 2000
  - Printing of literals works differently now - instead of printing the name,
    we print the value at print time.
  - Fixed a bug in compile time optimization of ` ' concatination operators.
  - Split printtoken.c out of print.c
  - Fixes to pistachio "conf:general" kinds of references that got broken in
    1.1.0.
  - Many fixes and improvements to abalone.
  - Pistachio searches can be restricted to a designated list of items.
  - Pistachio item list page can list only new items, and this is default
    instead of listing all items.
  - Make the words "conference", "item", and "response" configurable to
    different words (like "forum", "topic" and "posting") in pistachio.

Version 1.0.4 - Jun 26, 2000
  - Fixed various minor typos in pistachio.
  - Fixed a bug in the formatting of pistachio help page headers.

Version 1.1.0 - May 28, 2000
  - Added 'abalone' interface flavor - not really done yet.
  - Threw out old regular expression code.  Merged a version of Henry
    Spencer's regular expression library into the distribution.
  - Made compiled regular expressions into a first class data type.
    Taught btc to compile them at compile time.
  - Added 'ogrep', 'sgrep', and 'rgrep' functions.
  - Added 'default' function.
  - Eliminated ignore_case system variable.
  - Added ignore case argument to replace and search functions.
  - cvs function converts arrays now.  Behavior when converting times has
    changed.
  - ` and ' functions make a handy way for concatinating lots of stuff together
    into one string.
  - Implement firstin() and firstout() with strcspn() and strspn() when they
    exist.
  - New browser class -1 introduced for email address collection robots and
    other annoyances.  peek.bt, welcome.bt, pistachio/bio.bt and vanilla/bio.bt
    all decline to run for such things.
  - Revised search page a bit to handle case independent regular expression
    searches and report errors in bad regular expressions.
  - Modified various scripts to take advantage of ` ' concatination operators.
  - Include tools to make .gdbinit file in distribution.  Defines some handy
    variables and commands for debugging backtalk.
  - Split config.h into config.h and common.h.
  - Don't create the error log file - if it doesn't exist, don't log errors.

Version 1.0.3 - Jun 1, 2000
  - Fixed typo in src/Makefile.in that caused a bit of excess compilation.
  - Quote item titles in vanilla itemlist page.
  - Fixed bug where fairwitnesses weren't allowed to hide responses when they
    should have been allowed to.

Version 1.0.2 - May 7, 2000
  - Fixed bug where texttype selection gets reset to default after a response
    failed because of a slipped in response.
  - Fixed several obscure portability bugs in code used only on really old
    Unixes.
  - Don't trap SIGTERM even when signal trapping is turned on.  Http servers
    send these all the time, and we should honor them.
  - Don't create the error log file - if it doesn't exist, don't log errors.

Version 1.0.1 - Apr 25, 2000
  - Added 'cap' and 'caps' builtin functions.
  - Can configure words for "fairwitness" and "item" in pistachio.
  - Slight fixes and generalization to file access checking code.
  - Added 'directory', 'firstdir', and 'nextdir' builtin functions.
  - next_item function can be passed 'unseen' as a response selector.
  - next_item and next_resp are more tolerant of garbled selector strings.
    (in_sel still isn't).
  - Backtalk comparision functions can now compare time data types.
  - Fixed a genuine Y2K bug in routines that convert strings to dates.
    This effected only the dates "yesterday", "today" and "tommorrow".
  - .cfdir directories are only understood if built with real Unix accounts.
    Backtalk accounts don't need them, and we gain a smidgeon of speed by
    not allowing them.
  - "selectuser" checks for existance of selected user.
  - Added 'firstpartic' and 'lastpartic' functions to walk through a
    a conference's list of participants.
  - Default conference title is now capitalized version of conference name
    instead of plain raw conference name.
  - Added "parentresp" system variable - Backtalk can now read and post
    responses with yapp-style parent pointers.
  - Support for systems with index() instead of strchr().
  - Support for systems with missing or broken memcmp().
  - Support for systems without memset().
  - Eliminated use of memcpy() in favor of memmove() to simplify portability.
  - Bug fix to substitute strcasecmp() and strdup() functions.
  - Welcome.bt and peek.bt read interface.bt files out of subdirectories of
    script directory to get descriptions of installed interfaces.  New
    peekconf.bt and peekresp.bt scripts in each flavor provide standardized
    entry points for peek.  These changes allow interfaces to easily be
    distributed as separate packages from Backtalk.
  - Minor lynx compatibility fixes to welcome.bt script.
  - Pistachio can now display summary of active items in hot list conferences
    on entrance page.
  - Pistachio now has a box on confhome page where you can type item numbers
    to jump directly to them.
  - Cleanup of formatting of item-list page in Pistachio.
  - Display total number of items on confhome page.
  - Pistachio gains read-unseen option.
  - Pistachio games a mark-seen option.
  - Pistachio has a command to list participants in a conference.
  - Fixed a bug in Pistachio where extra stuff is deleted from your .cflist
    when you resign from a conference.
  - Conference names in Pistachio read pages now clickable to return to
    confhome page (and to make them stand out a bit).
  - Pistachio can display yapp-style parent pointers on response, but doesn't
    let you set them.
  - Fixed a Pistachio bug that broke the conference list on the hotlist
    editting page for systems using public.txt conference lists.
  - Some updates to browser capabilities database.

Version 1.0.0 - Apr 11, 2000
  - Autoconf support at last!
  - Old system.h and config.h files replaced by autoconf generated config.h
    file.
  - Total rewrite of dbm file interface.  Added support for Berkeley DB
    versions 1, 2 and 3.
  - Replaced RANDOM define with NORANDOM, since essentially all Unixes today
    have random().
  - Replaced DIRENT define with autoconf compatible HAVE_DIRENT_H, etc.
  - Improved portability of uid-swapping code, and broke it out into the
    set_uid.c file.
  - Names for defines controlling type of locking changed.
  - Names for defines controlling type of hashed database files changed.
  - Replaced defines like NOSTRSTR with autoconf compatible defines like
    HAVE_STRSTR.
  - Use tm2sec() function from Apache instead of mktime() for speed and
    portability reasons.  Add tm2sec.c to distribution.
  - Fixed vanilla to use new form of read_text function.
  - Improved support for international alphabets in formatting routines.
  - Support for systems without vprintf() or stdarg.h.  Added cmd_die.c file
    to distribution.
  - Pathname of file 'makeacct' shows after creating a new account passed as
    CGI variable instead of extra-path info.
  - Totally new installation manual
  - Man pages for btmkuser, btrmuser, btpasswd, and btvalid.
  - Portability and security enhancements to 'cgitest' script.
  - Added 'allowanon' system variable which allows anonymous users to run only
    the welcome script if it is set.  Eliminated welcome.html.  Welcome page
    is now generated by Backtalk even if anonymous users are not allowed.
  - Fixed bugs that made it impossible to set system constant from config.bt.
    Can now set them with either defconstant or store.
  - Configuration switches of author and fairwitness powers moved from
    compile-time to run-time config file.
  - Added author_erase and author_hide system constants to allow disabling
    author's powers to erase and hide.
  - Fixed bug that caused fullname changes to appear to lag in some
    configurations.
  - Added READABLE_PASSWD define for suexec compatiblity.
  - Added response editing command 'edit_resp' and associated variables
    'fw_edit', 'author_edit', 'mayedit' and 'editdate'.
  - Added response editing support to pistachio scripts.
  - Fixed erase_resp to erase and log both versions of responses when
    HIDE_HTML is used.
  - In pistachio, no borders on clickable logos.

Version 0.9.13 - May 24, 1999
  - Fixed bug that made it impossible to enter first item in fishbowl
    conferences.
  - When previewing, show pseudo name, not default conference alias.
  - If /text_interface is defined, but HTML is turned off, don't show
    HTML and plaintext versions of items and responses when previewing.

Version 0.9.12 - Apr 19, 1999
  - Many fixes to UD_DBM/SHARE_UPW options for backtalk and makeacct.
  - Fixed password change functions for ndbm user databases.
  - Added bozo filter option to pistachio.

Version 0.9.11 - Apr 9, 1999
  - Can set "global_header" macro in script/pistachio/config.bt to define a
    standard header that appears on all page (for ad rotators, and such).
  - Added appropriate </TR> </TD> and </TH> tags to all tables in all scripts.

Version 0.9.10 - Apr 1, 1999
  - Fairwitnesses can enable/disable images from pistachio confopt screen.
  - Clickifier in "expand" function gets a bit better at finding ends of URLs.
  - Added "allowgraphics" system variable, which controls whether <IMG> tags
    are allowed in HTML responses.
  - HTML <ABBR>, <Q>, <INS>, <DEL> and <SPAN> tags now allowed in postings.
  - HTML <EMBED> tag no longer allowed in postings.
  - The "open_conf" function checks that conference name is set.
  - Do "make .gdbinit" in src directory for some useful gdb debugging tools.
  - Constant "dflt_html" flag in config.bt gives default value of allow_html.

Version 0.9.9 - Mar 23, 1999
  - Fixed a pistachio bomb that occurred on the "unseen" button was hit when
    frames were on.
  - Fixed a type error that caused "read since" to bomb in pistachio.
  - Fixed bomb that occurred on first join to conference with no items.
  - Fixed bug that prevented built-in time variables from being set from
    query strings.
  - Fixed "roll" function to check that we aren't rolling more things than are
    on the stack.
  - Changed location redirect in welcome script to work around browsers who
    guess authentication realms wrong.
  - Loosened rules about conference directory names a bit.
  - cvs function converts times to strings.

Version 0.9.8 - Mar 11, 1999
  - Added ability for fairwitnesses to set which items should be "new" to
    newusers via the pistachio interface.
  - Modified open_conf to use the "new_isel" and "new_since" fields out of
    the conference settings file to decide which items should be new and
    which items should be unseen.
  - Added in_sel builtin function.
  - Broke the external authentication module and "pwauth" out this
    distribution and made it a separate package, distributed for free.
    See http://www.wwnet.net/~janc/mod_auth_external.html.
  - Rename http/test.cgi to misc/cgitest and deleted the lynxcgi patches.

Version 0.9.7 - Mar 5, 1999
  - Fairwitnesses can now turn HTML responses on/off in their conferences.
  - Fixed 0.9.6 bug with newness of your own responses.
  - Upgraded mod_auth_extern.c to support Apache 1.3 and fix small bugs.
  - Fixed bug in logging IP addresses under UNIX_LASTLOG.
  - Bug fixes to preview of HTML responses with aligned images.
  - Eliminated "history" variable which is redundant with "blindfold".
  - Fix REPEAT_FILE option to work when environment variables contain newlines.

Version 0.9.6 - Feb 26, 1999
  - Add support for HTML in postings, including "texttype" environment
    variable and HTML_PICOSPAN compile option.
  - Built HTML posting support into Pistachio interface.
  - Modified handling of conferences with password by "open_conf".
  - Taught Pistachio to understand conferences with passwords.
  - Update admin tools to create conferences with passwords.
  - Added Backtalk lastlog file support, with LASTLOG_FILE option.
  - Added sort capability to user list function.
  - TRAP_CRASH compile time option disables signal trapping.
  - Added "replace" operator.
  - Added "asort" operator.
  - Introduced "time" data type, and repaired many year 2038 bugs.  Added
    "cvt" function.
  - Expanded functionality of "exec" command.
  - Automated generation of button gifs, fixed some colors, added some styles.
  - Added "unhtml" and "cleanhtml" functions.
  - Added "preview" button to item and response post forms.
  - Ignore white space on ends of lines in conflist file.
  - Improve compatibility with Yapp 2.3.  If KEEP_ULIST defined, and in
    conferences where the ulist is not used for security purposes, we add
    the user into the ulist the first time he enters the conference, and
    delete him if he resigns.  If CONF_LOG defined, do Yapp-style logging of
    kill/link/retire/unretire/freeze/thaw actions in conference log file.
  - Automatically create indexdir's if they don't exist.
  - Fixed some misbehaviors of "forget" and improved Picospan compatibility.
  - Fixed some memory management bugs in and around gdbm nextusr() routine.
  - Fixed dbm version of user kill function.
  - Fix vanilla not to offer to change passwords on systems with "nopwedit".
  - Fix glitch that occasionally puts wrong button style on conf home page.
  - Fix stupid bug to make error log files work.
  - Delete "fw" built-in variable, whose purpose I could not remember or
    imagine.
  - Updated several help pages.

Version 0.9.5 - Dec 1, 1998
  - Some corrections to format.c, whose nature I don't remember.
  - Strip leading and trailing spaces of conference names in .cflist files.
  - Lynx browsers starting with version 2.7 assumed to have table support.
  - Fixed error message from makeacct when you try to reuse a login name.
  - Fixed AUTH_DBM to make it work.
  - Searching no longer marks whole conference read - added "blindfold"
    variable.
  - Security upgrades to partutil.

Version 0.9.4 - Feb 28, 1998
  - In Pistachio, if a response slips in before your response, it warns you
    and allows you a chance to edit your response before resubmitting it.
  - Added expect_resp variable to support the slipped response detection.
  - Added settable Conference Title stored in the conference config file,
    loaded into the conftitle variable by openconf, displayed by pistachio and
    vanilla as the name of a conference.
  - If compiler can't write out entire binary because disk is full, it deletes
    the whole binary file and bombs instead of leaving a partial one around.
  - When posting items or responses, check for full disk errors and don't
    post any part of the item or response if there isn't space for all of it.
  - Don't crash when reading truncated participation files (as might be caused
    by a full disk).  Instead keep as much information from it as is usable
    and ignore the rest.
  - When retitling items, don't delete temp file if we didn't have enough disk
    space to copy it back.
  - Improve system's tolerance of truncated sum files.  This is probably
    imperfect, but sum files are unlikely to be truncated in a disk full
    situation and should self-repair pretty fast.
  - Interpreter now traps most fatal signals and attempts to print a crash
    screen instead of just dumping core.  When debugging from the command line,
    the -s option surpresses this.
  - Fixed crashes caused by memory overflow in format routine.
  - Fixed compiler bug writing values on little-endian machines.
  - Fixed minor errors in installation manual. 
  - Fixed problems with peek by adding BASE references to pages peek points to.
  - Fixed a memory management bug in the "jump" command.

Version 0.9.3 - Feb 2, 1998
  - Moved default Pistachio button colors into pistachio/config.bt file.
  - Made conference logo clickable - goes to location defined in imageURL.
  - Fixed wrap function to set tabs a 8 columns, not at four.
  - Fixed bug in compile-time optimization of cvi function.
  - Fixed bug in welcome script that cause "read anonymous" not to work.
  - Fixed incorrect use of "usepublic_txt" script in vanilla conflist script.
  - Fixed several minor memory leaks.
  - Improved format and politeness of crash screen.
  - Crash screen now reports compilation error messages.
  - Fixed compiler's handling of unbalanced { }'s.
  - Fixed crashs caused by empty procedures in scripts.
  - Added global_footer macro to pistachio/config.bt file.
  - Fixed get_cookie()'s habit of clobbering HTTP_COOKIE variable.
  - Fixed stack pointer problem in compile-time optimization of ifelse.
  - Fixed some minor OpenBSD compatibility problems.

Version 0.9.2 - Jan 6, 1998
  - Added cookie and http header generation stuff, including "setcookie" and
    "getcookie" commands, plus "http_header", "http_content_type",
    "http_expires", and "http_location" system variables.
  - Started adding some code for session-based authentication, but decided I
    need to think more about it, so it's still there but it doesn't work.
  - Fixed some portability problems for Solaris.
  - Fixed bug that causes hidden responses not to be shown as hidden unless
    they are the first response displayed.
  - Fixed a bug in makeacct that caused it to create unvalidated accounts
    incorrectly.
  - Fixed some more errors in the installation manual.
  - Fixed bug that made accounts unfingerable after the fullnames were changed.
  - Added btmkuser, btrmuser, btpasswd, btvalid command-line user
    user administration programs.
  - Added ONLY_ADM_CREATE option, in which only cfadm can create accounts.
  - Added cgiquote Backtalk command.
  - Added confmenu database as a replacement for the public.txt file.
  - Added confutil program for conference creation/deletion.
  - Added admin pages to create conferences, change conference setting, and
    edit the conference list and conference menu.
  - Added a new improved hotlist editing page for pistachio.
  - Added some missing pistachio help pages.
  - Revised most pistachio pages to use relative links instead of absolute ones.
  - Improved design of default welcome screen.
  - Pistachio background color can be changed in pistachio/config.bt file.
  - Pistachio resign command also deletes conference from your hotlist.
  - Admin can list only un- or invalidated users from pistachio/users.bt
  - Added timezone variable to modify behavior of ctime and dtime operator.
  - Added ztime operator.
  - Fixed bomb that occured when loadvar/savevar work on bound variables.
  - Added timezone setting script.
  - Fixed bug that allowed fairwitnesses to censor linked items.
  - Added admin documentation for conf backups and unerasing responses.
  - Fixed improper compile time optimzation of "and" and "or".
  - Fixed it not to call partutil to permit a file unless it exists or we are
    about to write to the file.

Version 0.9.1 - Nov 10, 1997
  - Addition of item index files to improve speed.
  - Small bug fixes to pistachio/read.mkpanel script.
  - Revised the way that source file names are tracked through compilation.
  - Cleaned up some memory leaks.
  - CLEANUP compile-time flag causes more careful memory deallocation.
  - decomp gets -v flag for pretty-printing.
  - print full execution stack backtrace on bombs.
  - weird internal @include, @stopped and @chain functions eliminated.
  - bug fixes to date string parsing.
  - re-enabled input wrapping to cover for Microsoft IE bug.
  - bomb screen prints all dictionaries, not just system dictionary.
  - fix bug in "undef" on systems without memmove() that scrambled dictionaries.

Version 0.9.0 - Oct 6, 1997:
  - First version with compiler.
  - Changes to dictionary structure.
  - Addition of "defconstant", "xdefconstant", "constant", "call", "jump" and
    "cvn" commands.
  - Redefinition of "include", "chain" and "stopped" commands.
  - Deletion of "defmacro", "macro" commands.
  - Bug fixes in "validate" command (to make it work at all).
  - Bug fixes in "date" command (fix "Yesterday" bug).
  - Procedures stored internally as executable arrays rather than executable
    strings.
  - Addition of administration manual.

Version 0.8.2
  - First publicly released version

This was preceeded by many unnumbered versions that form a great hazy blur
in our memories.  Some highlights:

12/ 8/96 - Read Since, and paging.
11/12/96 - Color setting in Pistachio.
10/17/96 - No-frames mode in Pistachio.
 9/11/96 - First installation co-existing with Picospan on Grex.
 7/21/96 - Retitling, resigning, user removal.
 6/14/96 - Item linking.
 5/15/96 - Account validation/invalidation.
 4/29/96 - Added file handles.
 4/ 9/96 - Password and full name change code.
 4/ 8/96 - Fairwitness powers.
 2/28/96 - Changed name from "WebSpan" to "Backtalk".
 2/25/96 - Changed name of "Godzilla" interface to "Pistachio".
 2/19/96 - Added tagfiles.
 2/16/96 - First version of "makeacct".
 2/11/96 - First production installation at HVCN.
 2/ 2/96 - Array datatypes.
 1/26/96 - Sum file generation.
 1/22/96 - Hiding, freezing, killing, retiring.
 1/18/96 - Partutil, User authentication added.
 1/12/96 - First version that could post responses.

Backtalk had its roots in two programs developed by the authors
independently.  Steve Weiss's WebSpan program, written in 1996, was a
simple read-only web interface to Picospan conferences.  Jan Wolter's
bbsread program was a slightly more complex text-based read-only
interface to Picospan that was written in 1993.