Copy and paste of groovy file with comment before package declaration causes syntax error

A little more clarification please. What are you copy/pasting? When I try copy/paste of the file (from the package explorer) to another package, I do not see the problem.

Yes. Create Test.groovy in non default package. Select file in package editor. Copy file (ctrl+c). Paste file into same package. File should be called CopyOfTest.groovy. The invalid comment should look like:

CopyOfTest**
 * Package comment
 */

Thanks. I can reproduce now. This problem only occurs when pasting into the same package as the original and only when the copied source file is a script with no class declarations. Ie-

This works:

/**
 * comment
 */
package com.test2

class Other { }

But this does not:

/**
 * comment
 */
package com.test2

def x
print x

Fixed.

The problem was that we were erroneously returning the script's name declaration as a reference to the type. The script name declaration doesn't really exist, but we have to put something there, so we mark the script as having a name declaration at location 0 with length 0.

The refactoring engine was picking this up as a match and erroneously replacing the (non-existent) name with the new name.