string literal juxtaposition

[JeffBezanson]

"a"x is parsed as "a" * x, which is probably unintentional, especially given the a"b"c string macro syntax. It's very easy to remove, but when you do that "a"x becomes syntax for adding doc string "a" to variable x. Easy to see why that happens, but it's a bit odd. Should we just make "a"x a syntax error, requiring a space?

[ararslan]

+1 to making "a"x a syntax error and requiring a space. The only time I've seen "a"x used as string literal juxtaposition on purpose is in code golf, which isn't exactly a compelling use case.