wrong JavaScript output ?

[wangkechun]

a(b).c() + 'a' + c generate a(b).c() + 'a' + c;
but a(b).c() +'a' + c generate a(b).c()(+'a' + c);

[connec]

Duplicate of many other tickets (though goodness knows what to search for?).

CoffeeScript sees an implicit function call in console.log +'123' because it treats it as
console.log (+'123') (compare to JS, which gives you "function log() { [native code] }123").

It is a little weird, though, that it is sometimes allowed: console.log +'123' +'456' compiles to console.log(+'123' + '456'), rather than the syntax error you would get for
console.log +'123' (+'456').

[KamilaBorowska]

It would be issue #1036.