675a581839
I've moved tokenization of bare words into the external scanner. This way we can keep the grammar simple, but support some fancy rules that I've inferred from experimenting with bash: - Only allow '}' inside of a bare word if '}' isn't a valid lookahead token (i.e. we're not inside of a variable expansion). - Only allow ']' at the *start* of a bare word if neither ']' nor ']]' are valid lookahead tokens (i.e. we're not inside of a square bracket command or an array subscript). - Parentheses seem to never be allowed in bare words. You have to quote them. For alphanumeric words, I fall through to the normal scanner so that it can continue to distinguish reserved words from other words. Fixes #5
