Github user paulk-asert commented on the pull request: https://github.com/apache/groovy/commit/5443e87882f9b88169876f6d043ed54b5ae9023b#commitcomment-28569181 In src/main/java/org/codehaus/groovy/control/CompilerConfiguration.java: In src/main/java/org/codehaus/groovy/control/CompilerConfiguration.java on line 951: getting better (and fine for an alpha release) but there is currently no way to create a compiler configuration with a defined value - some DSLs will need a fixed value true or false regardless of system property. Also best to have try catch around Boolean.getBoolean.
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