"Define" directive is ALWAYS parsed

[Adam <adam.vest@xxxxxxxxxxxxxxxxxxxxxxxxx>]

Hello,

I'm working on a way of making specific content available only under certain circumstances, and I believe the best way to go about this is to use the "Define" directive, then do some stuff within "<IfDefine ...>" wrappers. The problem is, no matter what kind of conditional stuff I put around the Define line, it is always parsed.

Example:

<If "%{HTTP_USER_AGENT} =~ /curl/>

	Define myvar

</If>

With the above, the "myvar" parameter will always be defined for every request, regardless of user-agent. This will also work:

<If "%{REMOTE_ADDR} == 'these.are.numbers'">

	Define myvar

</If>

Very clearly that should never ever match, yet it does. Reading the documentation seems to indicate that the Define directive should be obeying the context it is being put in:

Documentation for "If" directive (https://httpd.apache.org/docs/2.4/mod/core.html#if):

Only directives that support the directory context can be used within this configuration section.

Documentation for "Define" directive (https://httpd.apache.org/docs/2.4/mod/core.html#define):

Context: server config, virtual host, directory

Perhaps the only way I could get Define to only be applied conditionally is by following the example of nesting it within <IfDefine...> wrappers. But if Define is otherwise always set globally and unconditionally, then the <IfDefine...> directive seems superfluous.

Am I vastly misunderstanding the usage of this here?

Thanks for any assistance.

-Adam