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To workaround the impossibility to use the Acceleo compiler headlessly (Bug 322635), MoDisco projects which use Acceleo have an ant script that copies the emtl files back and forth. But I noticed while configuring the script for "org.eclipse.modisco.java.discoverer.benchmark" that it runs continuously when mtl files are modified : - Acceleo compiles the files - the ant builder detects a change in the bin directory - it copies the emtl files from "bin" to "emtl" - the Acceleo builder detects a change in the project and it rebuilds the files - the ant builder detects a change in the bin directory - etc. Sometimes it stops after a few builds, sometimes it continues this way for a long time. So, there appears to be a race condition between the builders. Note that I saw the problem because I checked "allocate console" while configuring the emtl launch configuration on the builder. This option is disabled on the other projects.
Note: this would effectively be a non-issue if we didn't have to copy the EMT files. So, I'm marking this bug as dependent on Bug 322635 - Acceleo headless builder.
No emergency => P5