DOT record shape syntax doesn't work properly when using { and } in label.

[Vinu Rajashekhar]

Firstly, thanks for this great tool!

digraph D {
    node_A [shape=record, label="shape=record|{above|middle|below}|right"];
    node_B [shape=plaintext, label="shape=plaintext|{curly|braces and|bars without}|effect"];
}

should ideally be rendered as:

.

Instead, it's rendered as:

Repro example taken from here.