Utilisateur:Tenbergen/mermaid ER Diagram underscore in entity name breaks graph

This is an example for issue report https://github.com/SemanticMediaWiki/Mermaid/issues/79 .

The following sample code is taken straight from https://mermaid-js.github.io/mermaid/#/entityRelationshipDiagram . It should show a car and person example, but nothing is listed when entity name "CAR" is changed to "C_AR", which is allowed syntax as per mermaidjs.github.io/, and which works in the live editor.