NAnt: Check if include file was already included

Question

Does anybody know a way to check if a file was already included?

<include buildfile="${script.dir}\util.include.nant" />
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<include buildfile="${script.dir}\util.include.nant" />

This will throw an exception that a target was duplicated. Is there a way around?

Thanks in advance

Answer 1

Just saw this question which seems related and decided to change the case of one of the duplicate includes in a.build in my other answer to:

<include buildfile="c.build" />
<include buildfile="C.build" />

Boom - duplicate target error. Looks like nant is bright enough to ignore duplicate includes, but is case sensitive when comparing them.