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PR62186: preserve %<m for ErrorDocument internal redirects

  *) core: Preserve the original HTTP request method in the '%<m' LogFormat
     when an path-based ErrorDocument is used.  PR 62186.
     [Micha Lenk <micha lenk.info>]

Submitted By: Micha Lenk
Committed By: covener

Submitted by: covener
Reviewed by: covener, jhriggs, jim


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Use the "c" highlight for API description.

(r1829678 in trunk)

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Fix the number of available load balancer scheduler algorithms and add a link to the corresponding module. (lbmethod_heartbeat was missing in the list)

(r1829613 in trunk + some formating (trailing space and alignment) to synch with trunk)

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     trunk patch: http://svn.apache.org/r1827196
     2.4.x patch: svn merge -c 1827196 ^/httpd/httpd/trunk .
     +1: icing, ylavic, jim


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suggestions. Reset jhriggs' vote since the patch
changed.

Thanks to both for the help!



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Add some quotes arround a string to improve syntax highlight and synch with trunk.

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Explain when the surrounding double quotes arround the expr argument MUST be avoided. (part of r1829390 in trunk)

Remove trailing spaces to synch with trunk.

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Use 'ap_log_rerror()' instead of 'ap_log_error()' consistently
Submitted by: jailletc36
Reviewed by: jailletc36, jorton, ylavic


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* modules/loggers/mod_logio.c (logio_pre_config): Remove pointless
  static in optional fn pointer variable declaration.

* modules/ssl/ssl_engine_vars.c (ssl_var_log_config_register):
  Likewise.


Fix a potential compiler warning about uninitialized variable.
PR 59821
Submitted by: jorton, jailletc36
Reviewed by: jailletc36, jorton, ylavic


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mod_dumpio: do nothing below log level TRACE7.

For instance, depending on EnableMMAP/Sendfile configuration, don't split
file brigades to 8K heap buckets upon reading.



mod_dumpio: follow up to r1818802.

Negate APLOGctrace7(c) test!

Also, return DECLINED when nothing is to be done, same result as OK but
possibly more semantically correct.


Submitted by: ylavic
Reviewed by: jailletc36, jorton, ylavic


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* modules/loggers/mod_logio.c (logio_pre_config): Remove pointless
  static in optional fn pointer variable declaration.

* modules/ssl/ssl_engine_vars.c (ssl_var_log_config_register):
  Likewise.


Fix a potential compiler warning about uninitialized variable.
PR 59821
Submitted by: jorton, jailletc36
Reviewed by: jailletc36, jorton, ylavic


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mod_md: Fix compilation with OpenSSL before version 1.0.2.

Symbol ASN1_TIME_diff is only available for 1.0.2+,
but luckily alternative code we can use is already
available, originally written for the LibreSSL case.

Submitted by: rjung
Reviewed by: rjung, ylavic, jim


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