Section 7 (Lexical Conventions): # Note that contexts exist in the syntactic grammar where both a division # and a RegularExpressionLiteral are permitted by the syntactic grammar; # [...]
I believe this statement is incorrect [*1]. If I'm wrong, what is an example of such a context? [*1] A DivisionPunctuator must be preceded by an expression. A RegularExpressionLiteral is itself an expression. Therefore, for there to exist syntactic contexts in which either a DivisionPunctuator or a RegularExpressionLiteral could occur, it would have to be possible for an expression to immediately follow [*2] another expression with no intervening operator. The only case in which that can occur is where a semicolon is automatically inserted between the two expressions. Assume that case: then the second expression cannot begin with [*2] a token whose first character is '/', because that would have been interpreted as a DivisionPunctuator, and so no semicolon insertion would have occurred (because semicolon insertion only occurs where there would otherwise have been a syntax error); contradiction. [*2] Ignoring comments and whitespace. -- David-Sarah Hopwood _______________________________________________ Es-discuss mailing list Es-discuss@mozilla.org https://mail.mozilla.org/listinfo/es-discuss