Quote unquoted node-label payloads in flowchart-family diagrams when they contain characters that the Mermaid 11 lexer treats as control tokens — specifically (, ), {, }, ,, :. Idempotent: a label that already begins with " is left untouched.
Recognised label shapes (the inner payload is what gets quoted):
A[…] square-bracket node
A(…) rounded node — only when the inner payload starts with another delimiter (e.g. A((..)), A(["..."])), never plain A(text) which is a valid shape on its own.
A{…} diamond node
A{{…}} hexagon node
A[/…/] trapezoid / parallelogram variants
A>…] asymmetric / flag node
Applies only to top-level diagram types flowchart / graph.
Quote unquoted node-label payloads in flowchart-family diagrams when they contain characters that the Mermaid 11 lexer treats as control tokens — specifically
(,),{,},,,:. Idempotent: a label that already begins with"is left untouched.Recognised label shapes (the inner payload is what gets quoted):
A[…]square-bracket nodeA(…)rounded node — only when the inner payload starts with another delimiter (e.g.A((..)),A(["..."])), never plainA(text)which is a valid shape on its own.A{…}diamond nodeA{{…}}hexagon nodeA[/…/]trapezoid / parallelogram variantsA>…]asymmetric / flag nodeApplies only to top-level diagram types
flowchart/graph.