Also fix up a couple typos.

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Neither of the following makes sense:
- ProxyFCGISetEnvIf cond !VARIABLE value
- ProxyFCGISetEnvIf cond !

Error out in these cases. Also, don't execute the (unused) replacement
expression when unsetting.

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Add syntax highlight + change separator in regex (# --> |) in order to please syntax highlighting engine

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As pointed out by Mark Brooks in the site comments.

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In bugzilla and users@ we keep receiving questions about
how to test the new restrictions imposed by HttpProtocolOptions.
Added some info about how to use openssl s_client properly
and the mod_dumpio's directives to debug (thanks to
Daniel Ferradal for this suggestion).



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When using shared MPMs, `httpd -V` will perform a full configuration
check, which emits warnings when there is no defined ServerName.
Unfortunately the test suite does a -V check for every test section,
spamming the output with noise.

Work around this by just uncommenting the example ServerName in the test
config.

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seems like a steady stream of comments/questions in this area.



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brigades.


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Fix for PR 46037


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Fix for PR 46037


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to make static analysers happy.



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replacement for ProxyPass /path ! when ProxyPass is in
location context.



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r1773397 had a regression and the whole thing is fishy
to shoehorn the current ProxyPass ! syntax into.



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