I Heard You Like To Write Less

Update apparently this proposal is being considered in es-discuss ... not the implicit return so far but the "redundant" function keyword.
This is last draft from Brendan Eich:

FunctionDeclaration:
   function Identifier ( FormalParameterList_opt ) { FunctionBody }
   Identifier ( FormalParameterList_opt ) [no LineTerminator here] { FunctionBody }

ShortFunctionExpression:
   Identifier_opt ( FormalParameterList_opt ) [no LineTerminator here] { FunctionBody }
   Identifier_opt ( FormalParameterList_opt ) => InitialValue

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I'm @qconlondon waiting for the next talk so I decided to take a couple of minutes to blog about this little experiment.
In ES-Discuss developers are still talking about function keyword, if it's needed or not.

I believe the fact CoffeeScript has no explicit function is one of the major reasons devs have been attracted so I made it even simpler.

Just Drop The Function

With current ES 3, 5, or 5.1 syntax I can't really see problems or ambiguity removing that keyword but if you find a case that could fail please let me know.
Of course if we use a keyword we should be able to understand the difference, i.e. with for, if, or others, and this simple test page is just an experiment: you write some code, you "functionize" it, and if the code does not run it's showed highlighted in red.
The RegExp is quite simple and straight forward and parsing time should never be a problem even for big projects.
The return is implicit, a bit Ruby style, but of course you can chose to return in the middle of a function.
Thing is, the very last statement will be returned and you can play with results.

I wonder if anyone would use such syntax on daily JavaScript coding. The parser needs improvements in any case so just think about it and let me know. Cheers