Hello,

In the latest ANTLRv3.g (
http://fisheye2.atlassian.com/browse/antlr/tool/src/main/antlr3/org/antlr/grammar/v3/ANTLRv3.g?r=5943#l185
)
...
184        ruleScopeSpec
185             :       'scope' ACTION -> ^('scope' ACTION)
186             |       'scope' id (',' id)* ';' -> ^('scope' id+)
187             |       'scope' ACTION
188                     'scope' id (',' id)* ';'
189                     -> ^('scope' ACTION id+ )
190             ;
...

It seems to me that the alternatives are duplicated.  Or is there any
purpose that they are here?

Thanks,
Shaoting

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