"velocimacro.permissions.allow.inline.local.scope" makes VelocityEngine not 
threadsafe
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                 Key: VELOCITY-776
                 URL: https://issues.apache.org/jira/browse/VELOCITY-776
             Project: Velocity
          Issue Type: Bug
          Components: Engine
    Affects Versions: 1.6.4
         Environment: Sun java jdk1.6.0_21, Ubuntu 10.04
            Reporter: Simon Kitching


The attached unit test shows that when 
"velocimacro.permissions.allow.inline.local.scope" is set to true, and multiple 
threads use the same VelocityEngine instance then macros sometimes don't get 
expanded and the #macroname call remains in the output text.

Notes:
* running test method "testMultipleEvals" (single threaded case) always succeeds
* running test method "testMultiThreadMultipleEvals" always fails
* commenting out the allow.inline.local.scope line makes the multithread test 
pass (but of course has other side-effects)

Interestingly, for the multithread case it seems that 1 thread always succeeds 
and N-1 threads fail.


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