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From: bugzilla@apache.org
To: ant-dev@jakarta.apache.org
Cc: 
Subject: DO NOT REPLY [Bug 10386]  -
    condition with isset does not return valid results on ${env.<varname>}
 when varname is not defined
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http://nagoya.apache.org/bugzilla/show_bug.cgi?id=10386

condition with isset does not return valid results on ${env.<varname>} when varname is not defined





------- Additional Comments From holtdl@yahoo.com  2002-07-03 23:53 -------
> But another condition, <not> <isset> does not set the variable either.

Yes, it does -- but, again, you've got your defaults *before* your <condition>, 
and that will not work. You've got to move those to *after* the condition:
<project default="whatever">
  <property environment="env"/>
  <target name="whatever">
    <condition property="var7" value="var7 set because env.var0 IS set">
      <isset property="env.var0"/>
    </condition>
    <property name="var7" value="DEFAULT VALUE for var7"/>
    <condition property="var8" value="var8 set because env.var0 is NOT set">
      <not>
        <isset property="env.var0"/>
      </not>
    </condition>
    <property name="var8" value="DEFAULT VALUE for var8"/>
    <echo message="${var7}   ${var8}"/>
  </target>
</project>

$ ant
whatever:
     [echo] DEFAULT VALUE for var7   var8 set because env.var0 is NOT set
$ var0=foo ant
whatever:
     [echo] var7 set because env.var0 IS set   DEFAULT VALUE for var8

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