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Changes with Apache 2.1.0-dev

  [Remove entries to the current 2.0 section below, when backported]
  *) work around MSIE Digest auth bug - if AuthDigestEnableQueryStringHack
     is set in r->subprocess_env allow mismatched query strings to pass.
     PR 27758.  [Paul Querna <chip force-elite.com>, Geoffrey Young]

  *) logresolve: Allow size of log line buffer to be overridden at
     build time (MAXLINE).  PR 27793.  [Jeff Trawick]

  *) Fix crash when Apache was started with no Listen directives.
     [Michael Corcoran <mcorcoran warpsolutions.com>]

  *) mod_dav: Fix a problem that could cause crashes when manipulating 
     locks on some platforms.  [Jeff Trawick]

  *) Satisfy directives now can be influenced by a surrounding <Limit>
     container.  PR 14726.  [André Malo]

  *) htpasswd: use apr_temp_dir_get() and general cleanup
     [Guenter Knauf <eflash gmx.net>, Thom May]

  *) mod_proxy: Fix handling of non-200 success status codes when
     "ProxyErrorOverride On" is configured.  PR 20183.
     [Marcus Janson <marcus.janson tre.se>, Joe Orton]

  *) Threaded MPMs for Unix and Win32: Add support for ThreadStackSize 
     directive (previously NetWare-only) to override default thread 
     stack size for threads which handle client connections.  Required 
     for some third-party modules on platforms with small default 
     thread stack size.  [Jeff Trawick]
  *) mod_rewrite: Support for recognizing SSL variables in RewriteCond
     using the new "SSL:" format.  [Joe Orton, Madhusudan Mathihalli]

  *) mod_setenvif: Remove "support" for Remote_User variable which
     never worked at all. PR 25725.  [André Malo]

  *) minor mod_auth_basic and mod_auth_digest sync.  mod_auth_basic
     now populates r->user with the (possibly unauthenticated) user,
     and mod_auth_digest returns 500 when a provider returns
     AUTH_GENERAL_ERROR.
     [Geoffrey Young]

  *) mod_isapi: GetServerVariable returned improperly terminated header 
     fields given "ALL_HTTP" or "ALL_RAW".  PR 20656.
     [Jesse Pelton <jsp pkc.com>]

  *) mod_isapi: send_response_header() failed to copy status string's 
     last character.  PR 20619.  [Jesse Pelton <jsp pkc.com>]

  *) mod_isapi: GetServerVariable("ALL_RAW") returned the wrong buffer
     size.  PR 20617.  [Jesse Pelton <jsp pkc.com>]
  *) The whole codebase was relicensed and is now available under
     the Apache License, Version 2.0 (http://www.apache.org/licenses).
     [Apache Software Foundation]

  *) FreeBSD: Use the httpready accept filter instead of dataready on
     newer levels of the OS.  [Paul Querna <chip force-elite.com>]

  *) Delete some make-generated files in the server directory during 
     "make clean" processing.  PR 26552.  [Jeff Trawick]

  *) Unix MPMs: Stop dropping connections when the file descriptor
     is at least FD_SETSIZE.  [Jeff Trawick]

  *) Add core version query function (ap_get_server_revision) and
     accompanying ap_version_t structure (minor MMN bump).
     [André Malo]

  *) mod_rewrite: EOLs sent by external rewritemaps are now consumed
     as whole. That way, on systems with more than one EOL character
     rewritemap programs no longer need to switch stdout to binary
     mode. PR 25635.  [André Malo]

  *) mod_rewrite: Introduce the ability to force a content handler via
     the [handler=...] flag.  [André Malo]

  *) mod_rewrite: Introduce the RewriteCond -x check, which returns
     true if the pattern is a file with execution permissions.
     [André Malo]

  *) Allow proxying of resources that are invoked via DirectoryIndex.
     PR 14648.  [André Malo]

  *) mod_rewrite: Allow proxying and RewriteRules in directory context
     for subrequests.  PR 14648, 15114.  [André Malo]

  *) mod_rewrite: Allow setting of any valid HTTP response code.
     PR 25917.  [André Malo]

  *) mod_rewrite: Cookie creation now works locale independent.
     [André Malo]

  *) mod_ssl: Add support for distributed session cache using 'distcache'.
     [Geoff Thorpe <geoff geoffthorpe.net>]

  *) mod_dav: Disallow requests with an unescaped hash character in
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     the Request-URI.  PR 21779.  [Amit Athavale <amit_athavale lycos.com>]
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  *) Add forensic logging module (mod_log_forensic).
     [Ben Laurie]

  *) mod_proxy with ProxyErrorOverride On in a reverse-proxy configuration attaches
     a body to the 302 response and a wrong Content-Length header. 
     PR: 22951 [Ermanno Scaglione scaglione ..at.. starnetone.de]

  *) Bring ErrorHeader concept forward from 1.3, so that response
     header fields can be set for return even on errors or external
     redirects.  [Ken Coar]

  *) Fix <Limit> and <LimitExcept> parsing to require a closing '>' 
     in the initial container.  PR 25414. 
     [Geoffrey Young <geoff apache.org>]

  *) Clean up httpd -V output: Instead of displaying the MPM source
     directory, display the MPM name and some MPM properties.
     [Geoffrey Young <geoff apache.org>]

  *) mod_ssl/mod_status: Re-enable support for output of SSL session
     cache information in server-status page.  [Joe Orton]

  *) mod_ssl: Remove the shmht session cache, shmcb should be used
     instead.  [Joe Orton]

  *) mod_logio: Account for some bytes handed to the network layer prior to
     dropped connections.  [Jeff Trawick]

  *) mod_autoindex: new directive IndexStyleSheet 
    [Tyler Riddle <triddle_1999 yahoo.com>, Paul Querna <chip force-elite.com>]

  *) Fix uninitialized gprof directory name in prefork MPM.  PR 24450.
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     [Chris Knight <Christopher.D.Knight nasa.gov>]
  *) Log an error when requests for URIs which fail to map to a valid 
     filesystem name are rejected with 403.  [Jeff Trawick]

  *) Switch to APR 1.0 API.

  *) Major overhaul of mod_include's filter parser. The new parser code
     is expected to be more robust and should catch all of the edge cases
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     that were not handled by the previous one. This includes a binary
     incompatible change of mod_include's external API.  [André Malo]
  *) mod_rewrite: Allow forced mimetypes [T=...] to get expanded.
     PR 14223.  [André Malo]

  *) mod_rewrite: Fix LA-U and LA-F lookups in directory context. Previously
     the current rewrite state was just used as lookup path, which lead to
     strange and often useless results. Related to PR 8493.  [André Malo]

  *) Change Listen directive to bind to all addresses when a hostname is
     not specified.  [Justin Erenkrantz]

  *) Correct failure with Listen directives on machines with IPv6 enabled.
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     [Colm MacCárthaigh <colm stdlib.net>, Justin Erenkrantz]
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  *) Fix a link failure in mod_ssl when the OpenSSL libraries contain
     the ENGINE functions but the engine header files are missing.
     [Cliff Woolley]

  *) mod_rewrite: RewriteRules in server context using the force
     type feature [T=...] no longer disable MultiViews.  [André Malo]

  *) mod_rewrite: Allow piped rewrite logs to be relative to ServerRoot.
     [André Malo]

  *) mod_authz_groupfile: Strip trailing spaces of group names. This
     hopefully saves some hours of searching for typos. PR 12863.
     [André Malo]

  *) mod_actions: Propagate the handler name to the action script via
     the REDIRECT_HANDLER environment variable.  [André Malo]

  *) mod_actions: Introduce the "virtual" modifier to the Action directive,
     which allows the use of handlers for virtual locations. PR 8431.
     [André Malo]

  *) mod_speling: Recognize AcceptPathInfo setting for the particular
     location. Default is to reject path information. PR 21059.
     [André Malo]

  *) mod_ext_filter: Add the ability to filter request bodies.
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     [Philipp Reisner <philipp.reisner linbit.com>]
  *) Fix some broken log messages in WinNT MPM.  
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     [Juan Rivera <Juan.Rivera citrix.com>]
  *) prefork MPM: Use the right permissions for the directory created 
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     for gprof support.  [Jim Carlson <jcarlson jnous.com>]
  *) Fix a compile failure with recent OpenSSL and picky compilers
     (e.g., OpenSSL 0.9.7a and xlc_r on AIX).  [Jeff Trawick]

  *) OpenSSL headers should be included as "openssl/ssl.h", and not rely on
     the INCLUDE path to be defined properly.
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     PR 11310. [Geoff Thorpe <geoff geoffthorpe.net>]
  *) Modify APACHE_CHECK_SSL_TOOLKIT to detect SSL-C. [Madhusudan Mathihalli]
  *) Replace the APACHE_CHECK_SSL_TOOLKIT method with a cleaner one, using
     autoconf tools (AC_CHECK_HEADER, AC_CHECK_LIB etc). 
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     [Geoff Thorpe <geoff geoffthorpe.net>]
  *) change directive name from 'compressionlevel' to 'deflatecompressionlevel'
  *) mod_negotiation: quality values are now parsed independent from
     the current locale. level values are now really parsed as integers.
     PR 17564.  [André Malo]

  *) Extend mod_negotiation to evaluate the environment variables
     no-gzip and gzip-only-text/html the same way as mod_deflate does.
     [André Malo]

  *) mod_rewrite: Fix some problems reporting errors with mapping
     programs (RewriteMap prg:/something).  [Jeff Trawick]

  *) Return 413 if chunk-ext-header is too long rather than reading from
     the truncated line.  PR 15857.  [Justin Erenkrantz]

  *) Allow restart of httpd to occur even with syntax errors in the config
     file.  PR 16813.  [Justin Erenkrantz]

  *) Use APR_LAYOUT instead of APACHE_LAYOUT in configure.  PR 15679.
     [Justin Erenkrantz]

  *) Remove files on 'make distclean' that should be.  PR 15592.
     [Justin Erenkrantz]

  *) Allow apachectl to perform status with links and elinks as well.
     [Justin Erenkrantz]

  *) Extend the SetEnvIf directive to capture subexpressions of the
     matched value.  [André Malo]

  *) mod_log_config change optional hook to return previous handler
     [Ian Holsman]

  *) Forward port of mod_actions' ability to handle arbitrary methods
     with the Script directive.  [André Malo]

  *) Let suexec send a message to stderr, if it failed or its policy
     was violated. This message appears in the error log and allows
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     for easier debugging. PR 5381, 7638, 8255, 10773.  [André Malo]
  *) Modify buildconf to copy all required files into httpd's tree.
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     [Thom May <thom planetarytramp.net>]
  *) Allow mod_dav to do weak entity comparison functions.
     [Justin Erenkrantz]

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  *) Move RFC 1413 ident requests from core to new module mod_ident.
     [André Malo]

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  *) Add mod_authz_owner - a forward port of "Require file-owner"
     and "Require file-group", which was already present in version
     1.3.21.  [André Malo]

  *) Add mod_dav_lock - a generic subset of the DAV locking implementation.
     [Justin Erenkrantz]

  *) Replace some of the mutex locking in the worker MPM with
     atomic operations for higher concurrency.  [Brian Pane]

  *) Allow 'make depend' to work with non-GCC compilers.
     [Justin Erenkrantz]

  *) If an httpd.conf has commented out AddModule directives, 
     apxs -i -a will add an un-commented AddModule directive for 
     the new module, which breaks the config.
     PR: 11212 [Joe Orton]
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  *) Fix mod_proxy handling of filtered input bodies.  [Justin Erenkrantz]

  *) Move the check of the Expect request header field after the hook
     for ap_post_read_request, since that is the only opportunity for
     modules to handle Expect extensions.  [Justin Erenkrantz]

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  *) Rewrite of aaa modules to an authn/authz model.
     [Dirk-Willem van Gulik, Justin Erenkrantz]

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  [Apache 2.1.0-dev includes those bug fixes and changes with the
   Apache 2.0.xx tree as documented, and except as noted, below.]

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Changes with Apache 2.0.50
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  *) core_output_filter: Fix bug that could result in sending
     garbage over the network when module handlers construct
     bucket brigades containing multiple file buckets all referencing
     the same open file descriptor. [Bojan Smojver]
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  *) Fix memory corruption problem with ap_custom_response() function.
     The core per-dir config would later point to request pool data
     that would be reused for different purposes on different requests.
     [Jeff Trawick, based on an old 1.3 patch submitted by Will Lowe]

  *) Win32: Tweak worker thread accounting routines to eliminate
     server hang when number of Listen directives in httpd.conf
     is greater than or equal to the setting of ThreadsPerChild.
     [Bill Stoddard]

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Changes with Apache 2.0.49
  *) SECURITY: CAN-2004-0174 (cve.mitre.org)
     Fix starvation issue on listening sockets where a short-lived
     connection on a rarely-accessed listening socket will cause a
     child to hold the accept mutex and block out new connections until
     another connection arrives on that rarely-accessed listening socket.
     With Apache 2.x there is no performance concern about enabling the 
     logic for platforms which don't need it, so it is enabled everywhere
     except for Win32.  [Jeff Trawick]

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  *) mod_cgid: Fix storage corruption caused by use of incorrect pool.
     [Jeff Trawick]

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  *) Win32: find_read_listeners was not correctly handling multiple
     listeners on the Win32DisableAcceptEx path.  [Bill Stoddard]

  *) Fix bug in mod_usertrack when no CookieName is set.  PR 24483.
     [Manni Wood <manniwood planet-save.com>]

  *) Fix some piped log problems: bogus "piped log program '(null)'
     failed" messages during restart and problem with the logger
     respawning again after Apache is stopped.  PR 21648, PR 24805.
     [Jeff Trawick]

  *) Fixed file extensions for real media files and removed rpm extension
     from mime.types. PR 26079.  [Allan Sandfeld <kde carewolf.com>]

  *) Remove compile-time length limit on request strings. Length is
     now enforced solely with the LimitRequestLine config directive.
     [Paul J. Reder]

  *) mod_ssl: Send the Close Alert message to the peer before closing
     the SSL session. [Madhusudan Mathihalli, Joe Orton]

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  *) SECURITY: CAN-2004-0113 (cve.mitre.org)
     mod_ssl: Fix a memory leak in plain-HTTP-on-SSL-port handling.
     PR 27106.  [Joe Orton]

  *) mod_ssl: Fix bug in passphrase handling which could cause spurious
     failures in SSL functions later.  PR 21160.  [Joe Orton]

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  *) mod_log_config: Fix corruption of buffered logs with threaded
     MPMs.  PR 25520.  [Jeff Trawick]

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  *) Fix mod_include's expression parser to recognize strings correctly
     even if they start with an escaped token.  [André Malo]

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  *) Add fatal exception hook for use by diagnostic modules.  The hook
     is only available if the --enable-exception-hook configure parm 
     is used and the EnableExceptionHook directive has been set to 
     "on".  [Jeff Trawick]

  *) Allow mod_auth_digest to work with sub-requests with different
     methods than the original request.  PR 25040.
     [Josh Dady <jpd indecisive.com>]

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  *) fix "Expected </Foo>> but saw </Foo>" errors in nested,
     argumentless containers.
     ["Philippe M. Chiasson" <gozer cpan.org>]

  *) mod_auth_ldap: Fix some segfaults in the cache logic.  PR 18756.
     [Matthieu Estrade <apache moresecurity.org>, Brad Nicholes]

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  *) mod_cgid: Restart the cgid daemon if it crashes.  PR 19849
     [Glenn Nielsen <glenn apache.org>]

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  *) The whole codebase was relicensed and is now available under
     the Apache License, Version 2.0 (http://www.apache.org/licenses).
     [Apache Software Foundation]

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  *) Fixed cache-removal order in mod_mem_cache.
     [Jean-Jacques Clar, Cliff Woolley]

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  *) mod_setenvif: Fix the regex optimizer, which under circumstances
     treated the supplied regex as literal string. PR 24219.
     [André Malo]

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  *) ap_mpm.h: Fix include guard of ap_mpm.h to reference mpm
     instead of mmn. [André Malo]

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  *) mod_rewrite: Catch an edge case, where strange subsequent RewriteRules
     could lead to a 400 (Bad Request) response.  [André Malo]

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  *) Keep focus of ITERATE and ITERATE2 on the current module when
     the module chooses to return DECLINE_CMD for the directive.
     PR 22299.  [Geoffrey Young <geoff apache.org>]

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  *) Add support for IMT minor-type wildcards (e.g., text/*) to
     ExpiresByType.  PR#7991  [Ken Coar]

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  *) Fix segfault in mod_mem_cache cache_insert() due to cache size
     becoming negative.  PR: 21285, 21287
     [Bill Stoddard, Massimo Torquati, Jean-Jacques Clar]

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  *) core.c: If large file support is enabled, allow any file that is
     greater than AP_MAX_SENDFILE to be split into multiple buckets.
     This allows Apache to send files that are greater than 2gig.
     Otherwise we run into 32/64 bit type mismatches in the file size.
     [Brad Nicholes]

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  *) proxy_http fix: mod_proxy hangs when both KeepAlive and
     ProxyErrorOverride are enabled, and a non-200 response without a
     body is generated by the backend server. (e.g.: a client makes a
     request containing the "If-Modified-Since" and "If-None-Match"
     headers, to which the backend server respond with status 304.)
     [Graham Wiseman <gwiseman fscinternet.com>, Richard Reiner]

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  *) mod_dav: Reject requests which include an unescaped fragment in the
     Request-URI.  PR 21779.  [Amit Athavale <amit_athavale lycos.com>]

  *) Build array of allowed methods with proper dimensions, fixing
     possible memory corruption.  [Jeff Trawick]

  *) mod_ssl: Fix potential segfault on lookup of SSL_SESSION_ID.
     PR 15057.  [Otmar Lendl <lendl nic.at>]

  *) mod_ssl: Fix streaming output from an nph- CGI script. PR 21944
     [Joe Orton]

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  *) mod_usertrack no longer inspects the Cookie2 header for
     the cookie name. PR 11475.  [Chris Darrochi <chrisd pearsoncmg.com>]

  *) mod_usertrack no longer overwrites other cookies.
     PR 26002.  [Scott Moore <apache nopdesign.com>]

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  *) worker MPM: fix stack overlay bug that could cause the parent
     process to crash.  [Jeff Trawick]

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  *) Win32: Add Win32DisableAcceptEx directive. This Windows
     NT/2000/CP directive is useful to work around bugs in some 
     third party layered service providers like virus scanners, 
     VPN and firewall products, that do not properly handle 
     WinSock 2 APIs.  Use this directive if your server is issuing
     AcceptEx failed messages.
     [Allan Edwards, Bill Rowe, Bill Stoddard, Jeff Trawick]

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  *) Make REMOTE_PORT variable available in mod_rewrite.
     PR 25772.  [André Malo]

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  *) Fix a long delay with CGI requests and keepalive connections on
     AIX.  [Jeff Trawick]

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  *) mod_autoindex: Add 'XHTML' option in order to allow switching between
     HTML 3.2 and XHTML 1.0 output. PR 23747.  [André Malo]

  *) Add XHTML Document Type Definitions to httpd.h (minor MMN bump).
     [André Malo]

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  *) mod_ssl: Advertise SSL library version as determined at run-time rather
     than at compile-time.  PR 23956.  [Eric Seidel <seidel apple.com>]

  *) mod_ssl: Fix segfault on a non-SSL request if the 'c' log
     format code is used.  PR 22741.  [Gary E. Miller <gem rellim.com>]

  *) Fix build with parallel make.  PR 24643.  [Joe Orton]

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  *) mod_rewrite: In external rewrite maps lookup keys containing
     a newline now cause a lookup failure. PR 14453.
     [Cedric Gavage <cedric.gavage unixtech.be>, André Malo]

  *) Backport major overhaul of mod_include's filter parser from 2.1.
     The new parser code is expected to be more robust and should
     catch all of the edge cases that were not handled by the previous one.
     The 2.1 external API changes were hidden by a wrapper which is
     expected to keep the API backwards compatible.  [André Malo]

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  *) Add a hook (insert_error_filter) to allow filters to re-insert
     themselves during processing of error responses. Enable mod_expires
     to use the new hook to include Expires headers in valid error
     responses. This addresses an RFC violation. It fixes PRs 19794,
     24884, and 25123. [Paul J. Reder]

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  *) Add Polish translation of error messages.  PR 25101.
     [Tomasz Kepczynski <tomek jot23.org>]

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  *) Add AP_MPMQ_MPM_STATE function code for ap_mpm_query. (Not yet
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     supported for BeOS or OS/2 MPMs.)  [Jeff Trawick, Brad Nicholes,
     Bill Stoddard]
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  *) Add mod_status hook to allow modules to add to the mod_status
     report.  [Joe Orton]

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  *) Fix htdbm to generate comment fields in DBM files correctly.
     [Justin Erenkrantz]

  *) mod_dav: Use bucket brigades when reading PUT data. This avoids
     problems if the data stream is modified by an input filter. PR 22104.
     [Tim Robbins <tim robbins.dropbear.id.au>, André Malo]

  *) Fix RewriteBase directive to not add double slashes.  [André Malo]

  *) Improve 'configure --help' output for some modules.  [Astrid Keßler]

  *) Correct UseCanonicalName Off to properly check incoming port number.
     [Jim Jagielski]

  *) Fix slow graceful restarts with prefork MPM.  [Joe Orton]

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  *) Fix a problem with namespace mappings being dropped in mod_dav_fs;
     if any property values were set which defined namespaces these
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     came out mangled in the PROPFIND response.  PR 11637.
     [Amit Athavale <amit_athavale persistent.co.in>]

  *) mod_dav: Return a WWW-auth header for MOVE/COPY requests where
     the destination resource gives a 401.  PR 15571.  [Joe Orton]

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  *) SECURITY: CAN-2003-0020 (cve.mitre.org)
     Escape arbitrary data before writing into the errorlog. Unescaped
     errorlogs are still possible using the compile time switch
     "-DAP_UNSAFE_ERROR_LOG_UNESCAPED".  [Geoffrey Young, André Malo]
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  *) mod_autoindex / core: Don't fail to show filenames containing
     special characters like '%'. PR 13598.  [André Malo]
 
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  *) mod_status: Report total CPU time accurately when using a threaded
     MPM.  PR 23795.  [Jeff Trawick]

  *) Fix memory leak in handling of request bodies during reverse
     proxy operations.  PR 24991. [Larry Toppi <larry.toppi citrix.com>]

  *) Win32 MPM: Implement MaxMemFree to enable setting an upper
     limit on the amount of storage used by the bucket brigades
     in each server thread. [Bill Stoddard]
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  *) Modified the cache code to be header-location agnostic. Also
     fixed a number of other cache code bugs related to PR 15852.
     Includes a patch submitted by Sushma Rai <rsushma novell.com>.
     This fixes mod_mem_cache but not mod_disk_cache yet so I'm not
     closing the PR since that is what they are using. [Paul J. Reder]

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  *) complain via error_log when mod_include's INCLUDES filter is
     enabled, but the relevant Options flag allowing the filter to run
     for the specific resource wasn't set, so that the filter won't
     silently get skipped. next remove itself, so the warning will be
     logged only once [Stas Bekman, Jeff Trawick, Bill Rowe]

  *) mod_info: HTML escape configuration information so it displays 
     correctly. PR 24232. [Thom May]
     
  *) Restore the ability to add a description for directories that
     don't contain an index file.  (Broken in 2.0.48) [André Malo]

  *) Fix a problem with the display of empty variables ("SetEnv foo") in
     mod_include.  PR 24734  [Markus Julen <mj zermatt.net>]

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  *) mod_log_config: Log the minutes component of the timezone correctly.
     PR 23642.  [Hong-Gunn Chew <hgbug gunnet.org>]

  *) mod_proxy: Fix cases where an invalid status-line could be sent 
     to the client.  PR 23998.  [Joe Orton]

  *) mod_ssl: Fix segfaults at startup if other modules which use OpenSSL
     are also loaded.  [Joe Orton]

  *) mod_ssl: Use human-readable OpenSSL error strings in logs; use
     thread-safe interface for retrieving error strings.  [Joe Orton]

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  *) mod_expires: Initialize ExpiresDefault to NULL instead of "" to
     avoid reporting an Internal Server error if it is used without
     having been set in the httpd.conf file. PR: 23748, 24459
     [Andre Malo, Liam Quinn  <liam htmlhelp.com>]

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  *) mod_autoindex: Don't omit the <tr> start tag if the SuppressIcon
     option is set. PR 21668.  [Jesse Tie-Ten-Quee <highos highos.com>]

  *) mod_include no longer allows an ETag header on 304 responses.
     PR 19355. [Geoffrey Young <geoff apache.org>, André Malo]

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  *) EBCDIC: Convert header fields to ASCII before sending (broken
     since 2.0.44). [Martin Kraemer]

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  *) Fix the inability to log errors like exec failure in
     mod_ext_filter/mod_cgi script children.  This was broken after 
     such children stopped inheriting the error log handle.  
     [Jeff Trawick]

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  *) Fix mod_info to use the real config file name, not the default
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     config file name.  [Aryeh Katz <aryeh secured-services.com>]
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  *) Set the scoreboard state to indicate logging prior to running 
     logging hooks so that server-status will show 'L' for hung loggers
     instead of 'W'.  [Jeff Trawick]

Changes with Apache 2.0.48
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  *) SECURITY [CAN-2003-0789]: mod_cgid: Resolve some mishandling of
     the AF_UNIX socket used to communicate with the cgid daemon and
     the CGI script.  [Jeff Trawick]

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  *) SECURITY [CAN-2003-0542]: Fix buffer overflows in mod_alias and 
     mod_rewrite which occurred if one configured a regular expression 
     with more than 9 captures.  [André Malo]
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  *) mod_include: fix segfault which occured if the filename was not
     set, for example, when processing some error conditions.
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     PR 23836.  [Brian Akins <bakins web.turner.com>, André Malo]
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  *) fix the config parser to support <Foo>..</Foo> containers (no
     arguments in the opening tag) supported by httpd 1.3. Without
     this change mod_perl 2.0's <Perl> sections are broken.
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     ["Philippe M. Chiasson" <gozer cpan.org>]
  *) mod_cgid: fix a hash table corruption problem which could
     result in the wrong script being cleaned up at the end of a
     request.  [Jeff Trawick]

  *) Update httpd-*.conf to be clearer in describing the connection
     between AddType and AddEncoding for defining the meaning of
     compressed file extensions. [Roy Fielding]

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  *) mod_rewrite: Don't die silently when failing to open RewriteLogs.
     PR 23416.  [André Malo]

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  *) mod_rewrite: Fix mod_rewrite's support of the [P] option to send
     rewritten request using "proxy:". The code was adding multiple "proxy:"
     fields in the rewritten URI. PR: 13946.
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     [Eider Oliveira <eider bol.com.br>]
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  *) cache_util: Fix ap_check_cache_freshness to check max_age, smax_age, and
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     expires as directed in RFC 2616. [Thomas Castelle <tcastelle generali.fr>]
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  *) Ensure that ssl-std.conf is generated at configure time, and switch
     to using the expanded config variables to work the same as
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     httpd-std.conf PR: 19611
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     [Thom May]

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  *) mod_ssl: Fix segfaults after renegotiation failure. PR 21370
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     [Hartmut Keil <Hartmut.Keil adnovum.ch>]
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  *) mod_autoindex: If a directory contains a file listed in the
     DirectoryIndex directive, the folder icon is no longer replaced
     by the icon of that file. PR 9587.
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     [David Shane Holden <dpejesh yahoo.com>]
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  *) Fixed mod_usertrack to not get false positive matches on the
     user-tracking cookie's name.  PR 16661.
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     [Manni Wood <manniwood planet-save.com>]
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  *) mod_cache: Fix the cache code so that responses can be cached
     if they have an Expires header but no Etag or Last-Modified
     headers. PR 23130.
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     [<bjorn exoweb.net>]
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  *) mod_log_config: Fix %b log format to write really "-" when 0 bytes
     were sent (e.g. with 304 or 204 response codes).  [Astrid Keßler]

  *) Modify ap_get_client_block() to note if it has seen EOS.
     [Justin Erenkrantz]

  *) Fix a bug, where mod_deflate sometimes unconditionally compressed the
     content if the Accept-Encoding header contained only other tokens than
     "gzip" (such as "deflate"). PR 21523.  [Joe Orton, André Malo]

  *) Avoid an infinite recursion, which occured if the name of an included
     config file or directory contained a wildcard character. PR 22194.
     [André Malo]

  *) mod_ssl: Fix a problem setting variables that represent the
     client certificate chain.  PR 21371  [Jeff Trawick]

  *) Unix: Handle permissions settings for flock-based mutexes in 
     unixd_set_global|proc_mutex_perms().  Allow the functions to be
     called for any type of mutex.  PR 20312  [Jeff Trawick]

  *) ab: Work over non-loopback on Unix again. PR 21495. [Jeff Trawick]

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  *) Fix a misleading message from the some of the threaded MPMs when 
     MaxClients has to be lowered due to the setting of ServerLimit.  
     [Jeff Trawick]

  *) Lower the severity of the "listener thread didn't exit" message
     to debug, as it is of interest only to developers.  PR 9011
     [Jeff Trawick]

  *) MPMs: The bucket brigades subsystem now honors the MaxMemFree setting.
     [Cliff Woolley, Jean-Jacques Clar]

  *) Install config.nice into the build/ directory to make
     minor version upgrades easier. [Joshua Slive]

  *) Fix mod_deflate so that it does not call deflate() without checking
     first whether it has something to deflate. (Currently this causes
     deflate to generate a fatal error according to the zlib spec.)
     PR 22259. [Stas Bekman]

  *) mod_ssl: Fix FakeBasicAuth for subrequest.  Log an error when an
     identity spoof is encountered.
     [Sander Striker]

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  *) mod_rewrite: Ignore RewriteRules in .htaccess files if the directory
     containing the .htaccess file is requested without a trailing slash.
     PR 20195.  [André Malo]

  *) ab: Overlong credentials given via command line no longer clobber
     the buffer.  [André Malo]

  *) mod_deflate: Don't attempt to hold all of the response until we're
     done.  [Justin Erenkrantz]

  *) Assure that we block properly when reading input bodies with SSL.
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     PR 19242.  [David Deaves <David.Deaves dd.id.au>, William Rowe]

  *) Update mime.types to include latest IANA and W3C types.  [Roy Fielding]

  *) mod_ext_filter: Set additional environment variables for use by
     the external filter.  PR 20944.  [Andrew Ho, Jeff Trawick]

  *) Fix buildconf errors when libtool version changes.  [Jeff Trawick]

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  *) Remember an authenticated user during internal redirects if the
     redirection target is not access protected and pass it
     to scripts using the REDIRECT_REMOTE_USER environment variable.
     PR 10678, 11602.  [André Malo]

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  *) mod_include: Fix a trio of bugs that would cause various unusual
     sequences of parsed bytes to omit portions of the output stream.
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     PR 21095. [Ron Park <ronald.park cnet.com>, André Malo, Cliff Woolley]
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  *) Update the header token parsing code to allow LWS between the
     token word and the ':' seperator.  [PR 16520]
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     [Kris Verbeeck <kris.verbeeck advalvas.be>, Nicel KM <mnicel yahoo.com>]
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  *) Eliminate creation of a temporary table in ap_get_mime_headers_core()
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     [Joe Schaefer <joe+gmane sunstarsys.com>]
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  *) Added FreeBSD directory layout. PR 21100.
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     [Sander Holthaus <info orangexl.com>, André Malo]
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  *) Fix NULL-pointer issue in ab when parsing an incomplete or non-HTTP
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     response. PR 21085. [Glenn Nielsen <glenn apache.org>, André Malo]
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  *) mod_rewrite: Perform child initialization on the rewrite log lock.
     This fixes a log corruption issue when flock-based serialization
     is used (e.g., FreeBSD).  [Jeff Trawick]

  *) Don't respect the Server header field as set by modules and CGIs.
     As with 1.3, for proxy requests any such field is from the origin
     server; otherwise it will have our server info as controlled by
     the ServerTokens directive.  [Jeff Trawick]

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Changes with Apache 2.0.47
  *) SECURITY [CAN-2003-0192]: Fixed a bug whereby certain sequences
     of per-directory renegotiations and the SSLCipherSuite directive
     being used to upgrade from a weak ciphersuite to a strong one
     could result in the weak ciphersuite being used in place of the
     strong one.  [Ben Laurie]

  *) SECURITY [CAN-2003-0253]: Fixed a bug in prefork MPM causing
     temporary denial of service when accept() on a rarely accessed port
     returns certain errors.  Reported by Saheed Akhtar
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     <S.Akhtar talis.com>.  [Jeff Trawick]
  *) SECURITY [CAN-2003-0254]: Fixed a bug in ftp proxy causing denial
     of service when target host is IPv6 but proxy server can't create
     IPv6 socket.  Fixed by the reporter.  [Yoshioka Tsuneo
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     <tsuneo.yoshioka f-secure.com>]
  *) SECURITY [VU#379828] Prevent the server from crashing when entering
     infinite loops. The new LimitInternalRecursion directive configures
     limits of subsequent internal redirects and nested subrequests, after
     which the request will be aborted.  PR 19753 (and probably others).
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     [William Rowe, Jeff Trawick, André Malo]

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  *) core_output_filter: don't split the brigade after a FLUSH bucket if
     it's the last bucket.  This prevents creating unneccessary empty
     brigades which may not be destroyed until the end of a keepalive
     connection.
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     [Juan Rivera <Juan.Rivera citrix.com>]
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  *) Add support for "streamy" PROPFIND responses.
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     [Ben Collins-Sussman <sussman collab.net>]
  *) mod_cgid: Eliminate a double-close of a socket.  This resolves
     various operational problems in a threaded MPM, since on the
     second attempt to close the socket, the same descriptor was
     often already in use by another thread for another purpose.
     [Jeff Trawick]

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  *) mod_negotiation: Introduce "prefer-language" environment variable,
     which allows to influence the negotiation process on request basis
     to prefer a certain language.  [André Malo]

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  *) Make mod_expires' ExpiresByType work properly, including for
     dynamically-generated documents.  [Ken Coar, Bill Stoddard]
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Changes with Apache 2.0.46

  *) SECURITY [CAN-2003-0245]: Fixed a bug causing apr_pvsprintf() to crash 
     by sending an overly long string.  This can be triggered remotely 
     through mod_dav, mod_ssl, and other mechanisms.  Reported by David
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     Endler <DEndler iDefense.com>.
     [Joe Orton <jorton redhat.com>]

  *) SECURITY [CAN-2003-0189]: Fixed a denial-of-service vulnerability
     affecting basic authentication on Unix platforms related to
     thread-safety in apr_password_validate().  The problem was reported
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     by John Hughes <john.hughes entegrity.com>.
  *) Fix for mod_dav.  Call the 'can_be_activity' callback, if provided,
     when a MKACTIVITY request comes in.
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     [Ben Collins-Sussman <sussman collab.net>]

  *) Perform run-time query in apxs for apr and apr-util's includes.
     [Justin Erenkrantz]

  *) run libtool from the apr install directory (in case that is different
     from the apache install directory) [Jeff Trawick]

  *) configure.in: Play nice with libtool-1.5. [Wilfredo Sanchez]

  *) If mod_mime_magic does not know the content-type, do not attempt to
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     guess.  PR 16908.  [Andrew Gapon <agapon telcordia.com>]

  *) ssl session caching(shmht) : Fix a SEGV problem with SHMHT session
     caching. PR 17864.
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     [Andreas Leimbacher <andreasl67 yahoo.de>, Madhusudan Mathihalli]
  *) Add a delete flag to htpasswd.
     [Thom May]

  *) Fix mod_rewrite's handling of absolute URIs. The escaping routines
     now work scheme dependent and the query string will only be
     appended if supported by the particular scheme.  [André Malo]

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  *) Add another check for already compressed content in mod_deflate.
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     PR 19913. [Tsuyoshi SASAMOTO <nazonazo super.win.ne.jp>]
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  *) Fixes for VPATH builds; copying special.mk and any future .mk files 
     from the source tree as well as the build tree (now creates a usable
     configuration for apxs), and eliminated redundant -I'nclude paths.
     [William Rowe]

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  *) Code fixes, constness corrections and ssl_toolkit_compat.h updates
     for SSLC and OpenSSL toolkit compatibility.  Still work remains to
     be done to cripple features based on the limitations of RSA's binary 
     distribution of their SSL-C toolkit.
     [William Rowe, Madhusudan Mathihalli, Jeff Trawick]

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  *) Linux 2.4+: If Apache is started as root and you code 
     CoreDumpDirectory, coredumps are enabled via the prctl() syscall.
     [Greg Ames]

  *) ap_get_mime_headers_core: allocate space for the trailing null
     when folding is in effect.
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     PR 18170 [Peter Mayne <PeterMayne SPAM_SUX.ap.spherion.com>]
  *) Fix --enable-mods-shared=most and other variants.  [Aaron Bannert]

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  *) mod_log_config: Add the ability to log the id of the thread 
     processing the request via new %P formats.  [Jeff Trawick]

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  *) Use appropriate language codes for Czech (cs) and Traditional Chinese
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     (zh-tw) in default config files. PR 9427.  [André Malo]

  *) mod_auth_ldap: Use generic whitespace character class when parsing
     "require" directives, instead of literal spaces only. PR 17135.
     [André Malo]

  *) Hook mod_rewrite's type checker before mod_mime's one. That way the
     RewriteRule [T=...] Flag should work as expected now. PR 19626.
     [André Malo]

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  *) htpasswd: Check the processed file on validity. If a line is not empty
     and not a comment, it must contain at least one colon. Otherwise exit
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     with error code 7. [Kris Verbeeck <Kris.Verbeeck ubizen.com>, Thom May]
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  *) Fix a problem that caused httpd to be linked with incorrect flags
     on some platforms when mod_so was enabled by default, breaking 
     DSOs on AIX.  PR 19012  [Jeff Trawick]

  *) By default, use the same CC and CPP with which APR was built.
     The user can override with CC and CPP environment variables.
     [Jeff Trawick]

  *) Fix ap_construct_url() so that it surrounds IPv6 literal address
     strings with [].  This fixes certain types of redirection.
     PR 19207.  [Jeff Trawick]

  *) forward port of buffer overflow fixes for htdigest. [Thom May]

  *) Added AllowEncodedSlashes directive to permit control of whether
     the server will accept encoded slashes ('%2f') in the URI path.
     Default condition is off (the historical behaviour).  This permits
     environments in which the path-info needs to contain encoded
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     slashes.  PR 543, 2389, 3581, 3589, 5687, 7066, 7865, 14639.  [Ken Coar]
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  *) When using Redirect in directory context, append requested query
     string if there's no one supplied by configuration. PR 10961.
     [André Malo]

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  *) Unescape the supplied wildcard pattern in mod_autoindex. Otherwise
     the pattern will not always match as desired. PR 12596.
     [André Malo]

  *) mod_autoindex now emits and accepts modern query string parameter
     delimiters (;). Thus column headers no longer contain unescaped
     ampersands. PR 10880  [André Malo]

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  *) Enable ap_sock_disable_nagle for Windows. This along with the 
     addition of APR_TCP_NODELAY_INHERITED to apr.hw will cause Nagle 
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  *) Correct a mis-correlation between mpm_common.c and mpm_common.h;
     This patch reverts us to pre-2.0.46 behavior, using the 
     ap_sock_disable_nagle noop macro, because ap_sock_disable_nagle 
     was never compiled on Win32. [Allan Edwards, William Rowe]

  *) Fix a build problem with passing unsupported --enable-layout
     args to apr and apr-util.  This broke binbuild.sh as well as
     user-specified layout parameters.  PR 18649 [Justin Erenkrantz,
     Jeff Trawick]

  *) If a Date response header was already set in the headers array,
     this value was ignored in favour of the current time. This meant
     that Date headers on proxied requests where rewritten when they
     should not have been. PR: 14376 [Graham Leggett]

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  *) Add code to buildconf that produces an httpd.spec file from
     httpd.spec.in, using build/get-version.sh from APR.
     [Graham Leggett]

  *) Fixed a segfault when multiple ProxyBlock directives were used.
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     PR: 19023 [Sami Tikka <sami.tikka f-secure.com>]
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  *) SECURITY [CAN-2003-0134] OS2: Fix a Denial of Service vulnerability 
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     identified and reported by Robert Howard <rihoward rawbw.com> that 
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     where device names faulted the running OS2 worker process.
     The fix is actually in APR 0.9.4.  [Brian Havard]

  *) Forward port: Escape special characters (especially control
     characters) in mod_log_config to make a clear distinction between
     client-supplied strings (with special characters) and server-side
     strings. This was already introduced in version 1.3.25.
     [André Malo]

  *) mod_deflate: Check also err_headers_out for an already set
     Content-Encoding: gzip header. This prevents gzip compressed content
     from a CGI script from being compressed once more. PR 17797.
     [André Malo]

Changes with Apache 2.0.45
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  *) Fix possible segfaults under obscure error conditions within the
     cgid daemon.  [Jeff Trawick, William Rowe]

  *) SECURITY [CAN-2003-0132]: Close a Denial of Service vulnerability
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     identified by David Endler <DEndler iDefense.com> on all platforms.
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     An unlimited stream of newlines were acceptable between requests
     where each <lf> would allocate an 80 byte buffer, leading very
     quickly to memory exahustion.  [Brian Pane]
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  *) Added an rpm build script.
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     [Graham Leggett, Joe Orton <jorton redhat.com>]
  *) Simpler, faster code path for request header scanning  [Brian Pane]

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  *) SECURITY:  Eliminated leaks of several file descriptors to child
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     processes, such as CGI scripts.  This fix depends on the APR library 
     release 0.9.2 or later (0.9.3 was distributed with the httpd 
     source tarball for Apache 2.0.45.)  PR 17206
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     [Christian Kratzer <ck cksoft.de>, Bjoern A. Zeeb <bz zabbadoz.net>]
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  *) Fix path handling of mod_rewrite, especially on non-unix systems.
     There was some confusion between local paths and URL paths.
     PR 12902.  [André Malo]

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  *) Prevent endless loops of internal redirects in mod_rewrite by
     aborting after exceeding a limit of internal redirects. The
     limit defaults to 10 and can be changed using the RewriteOptions
     directive. PR 17462.  [André Malo]

  *) Win32: Avoid busy wait (consuming all the CPU idle cycles) when
     all worker threads are busy. 
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     [Igor Nazarenko <igor_nazarenko hotmail.com>]
  *) Keep the subrequest filter in place when a subrequest is 
     redirected.  PR 15423.  [Jeff Trawick]

  *) you can now specify the compression level for mod_deflate. 
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     [Ian Holsman, Stephen Pierzchala <stephen pierzchala.com>, 
     Michael Schroepl <Michael.Schroepl telekurs.de>]

  *) mod_deflate: Extend the DeflateFilterNote directive to
     allow accurate logging of the filter's in- and outstream.
     [André Malo]

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  *) Allow SSLMutex to select/use the full range of APR locking
     mechanisms available to it. Also, fix the bug that SSLMutex uses
     APR_LOCK_DEFAULT no matter what.  PR 8122  [Jim Jagielski,
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     Martin Kutschker <martin.t.kutschker blackbox.net>]
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  *) Restore the ability of htdigest.exe to create files that contain
     more than one user. PR 12910.  [André Malo]