Re: Performance tip

> Does Apache2 support the 'x' option to ignore whitespace and support
> comments?  If so, you should be able to do this (but I have no time
> right now to try it):
>
> SecFilterSelective VAR "(?x:
>   KEYWORD1|   #comment
>   KEYWORD2|   #comment
>   KEYWORD3    #comment
> )"

It does (if you write "(?x)" to enable extended regular expressions),
but there is a problem with that. Apache configuration directives can
only consume a single line. When you use the continuation character to
spread them across several lines Apache simply concatenates the lines
together. The first time you use a comment like that you will end the
regular expression. In the case above, the regex will be invalid
because of the missing closing parenthesis.

--

-- 
Ivan Ristic, Technical Director
Thinking Stone, http://www.thinkingstone.com
ModSecurity: Open source Web Application Firewall

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