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Move some tweaked/re-tested recipes from https://wiki.apache.org/httpd/RewriteQueryString into the 
extended doc for mod_rewrite.




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Fix typo + correctly spell this poor Barbara name, otherwise she will never be able to get access (r1643416)

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add some hints about using expressions in mod_headers




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function examples, other flavor of function examples. replace() example



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elaborate on per-directory limitations




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  *) SECURITY: CVE-2014-8109 (cve.mitre.org)
     mod_lua: Fix handling of the Require line when a LuaAuthzProvider is
     used in multiple Require directives with different arguments.
     PR57204 [Edward Lu <Chaosed0 gmail.com>]

Submitted By: Edward Lu
Committed By: covener


Submitted by: covener
Reviewed/backported by: jim


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avoid dereferencing a recently apr_pool_clear()'ed event_conn_state_t *cs
in several paths where ptrans is being recycled at the end of a request.



event, eventopt: follow up to r1638879 and r1639960.
Clear the pool in ap_push_pool() before recycling.

Submitted by: covener, ylavic
Reviewed/backported by: jim


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don't call notify_suspend() in a worker thread after 
start_lingering_close_common may have put the socket back
into the pollset. 

If it becomes readable too quickly, cs can be
free'ed or accessed concurrently.

Submitted by: covener
Reviewed/backported by: jim


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mod_proxy_connect: Don't issue AH02447 on sockets hangups, let the read
determine whether it is a normal close or a real error. PR 57168.

Abort the client or backend connection on polling errors, but don't forcibly
abort the client side at the end (the core filters will do that otherwise
when necessary), so that lingering close and SSL shutdown can occur on normal
close.

Submitted by: ylavic
Reviewed/backported by: jim


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mod_proxy_wstunnel: abort backend connection on polling error to avoid
further processing (lingering close, SSL shutdown).

Submitted by: ylavic
Reviewed/backported by: jim


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mod_proxy_fcgi, mod_authnz_fcgi: stop reading the response and issue an error
when parsing or forwarding the response fails.


Follow up to r1640040: CHANGES entry.
Submitted by: ylavic
Reviewed/backported by: jim


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core: Do not match files when using DirectoryMatch. PR41867.


Submitted by: jkaluza
Reviewed/backported by: jim


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* server/scoreboard.c: Check for child_num < 0 also in ap_update_child_status
and ap_update_child_status_from_conn. PR 56767.

Submitted by: jkaluza
Reviewed/backported by: jim


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mod_auth_basic: Fix comment mentioning 403 instead of 401.

Submitted by: jkaluza
Reviewed/backported by: jim


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use an actual list since we're gong to the trouble to use -in




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even out some whitespace



add a few more examples per feedback



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