include sig ... endval sexp_of_t : t ‑> Parsexp__.Import.Ppx_sexp_conv_lib.Sexp.tval position : t ‑> Positions.posval message : t ‑> stringval report : Format.formatter ‑> filename:string ‑> t ‑> unitReport an error in a style similar to OCaml, for instance:
File "blah", line 42, character 10: Error: s-expression parsing error; unterminated quoted string.