“cannot parse” DOT file with node label

[vbgl]

Running julia 1.11.3 with ParserCombinator v2.2.1

julia> parse_dot("graph g { _1 [ label = \"1\"]; }")
ERROR: ParserException("cannot parse")

However, graphviz accepts the same graph description.

Is that expected or are there some missing rules in the parser?

[oxinabox]

(this package is not currently being maintained)

[vbgl]

Thanks for the reply.