def escape.put
import emerging-ezjson@1.3.0.0/src/lex.bend as Leximport Base
101def escape.put(mb: Maybe<&2, Char>, buf: List<&2, Char>, toks: List<&2, Tok>) -> Lex:
102 match mb:
103 case Some{ch}:
104 Lex{Str{}, ch <> buf, toks}
105 case None{}:
106 Lex{Bad{}, [], toks}