[close #36]Don't count trailing if/unless as a keyword #44
+88
−10
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When a line definition ends in if/unless then it does not need an accompanying "end" this can be detected when lexing: https://github.com/ruby/ruby/blob/06b44f819eb7b5ede1ff69cecb25682b56a1d60c/lib/irb/ruby-lex.rb#L374-L375