For a smie grammar like this:

(id)
(inst ("if" exp "{" insts "}")
      (exp))
(insts (insts ";" insts) (inst))
(exp (exp "." id)
     (id ":" exp)
     (exp "=" exp))
(exps (exps "," exps) (exp))

Using 2 possible ways of hanling braces tokens:

1. Using default lexer rules for braces (as per documentation).
2. Manually tokenizing braces in lexer (uncomment lines 196-197 and
213-214 in provided source file)

I'm getting different indentation results. For the case number 1,
indentation of the consutriction:

if true {
    |foo
}

is invalid and from the logs it seems like smie doesn't parse this
constructor correctly.

For the case number 2 indentation works as expected, but for the
construction like this (which is a simple sexp):

{
}|

I'm getting "Mismatching parenthesis" error when I'm calling
blink-matching-open.