[ nant-Bugs-3023387 ] variable with if statement not working inside setenv

Bugs item #3023387, was opened at 2010-06-30 14:42
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Category: Functions
Group: 0.90
Status: Open
Resolution: None
Priority: 5
Private: No
Submitted By: https://me.yahoo.com/a/N1XAFoxk ()
Assigned to: Nobody/Anonymous (nobody)
Summary: variable with if statement not working inside setenv

Initial Comment:
 I have the following setenv block:

<setenv verbose="true" failonerror="false">
   <variable name="test" value="${environment::get-variable('some_non_existing_envvar')}" if="${environment::variable-exists('some_non_existing_envvar')}" />
 </setenv>

The environment variable does not exist, but I get a fatal error as the value is still attempted to be set.

Function call failed.
Expression: ${environment::get-variable('some_non_existing_envvar')}
              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    Environment variable "some_non_existing_envvar" does not exist.

If I move the "if" statement up to the setenv level, the variable is not set which is what I expect.
The workaround I am using is this:

<if test="${environment::variable-exists('some_non_existing_envvar')}" >
          <setenv verbose="true" name="test" value="${environment::get-variable('some_non_existing_envvar')}">
   </if>

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