Guy Catz schrieb:
How can I tell if a property is defined?

I've tried <if> from contrib like this - if .. ${var} = "" ...
That's fine for properties which was set to "", but not for properties who 
haven't set at all.

use condition isset, see ant manual conditions,
f.e. =

<condition property="foobar.set">
  <isset property="foobar"/>
</condition>

Regards, Gilbert

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