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although one can argue that truly correct programming obviates the need for a 'return' statement if you are not returning a value, it is nevertheless sometimes useful. in addition, some people like to enclose their return arguments in paranthesis, i.e. 'return(x)'. in any case it would be more consistent to omit the trailing space, since 'return' is not a modifier and does not necessarily have to be followed by anything.
Unfortunatelly we cannot make the abbreviations comfortable for all the users by default. Originally the abbreviation for 'return ' worked the way that you request but the users demanded to change it to the current behavior. If you want 're' to be expanded to 'return' or 'return(' please change the 're' abbreviation in Tools->Options->Editor Settings->Java Editor->Abbreviations.
Resolved for 3.3.x or earlier, no new info since then -> closing.