Add mermaid macro

[ishikawa999]

Add a wiki macro that can be used with the following notation. The text you write in this mermaid macro will be added to the diagram by mermaidjs.

{{mermaid
graph TD;
    A-->B;
    A-->C;
    B-->D;
    C-->D;
}}

• IE is not supported
• It is not possible to disable the mermaid macro feature like other features. This is a difficult feature to implement to reflect the settings.

Relation: #20

[ishikawa999]

@yui-har

You can use macros in comments and custom fields (Format: Long text, Full-width layout checked), but the mermaid macro doesn't seem to work in these input fields (diagrams don't show).

Does that custom field have the "Text formatting" setting turned on?

[yui-har]

@ishikawa999

Does that custom field have the "Text formatting" setting turned on?

Yes, the "Text formatting" setting turned on.

[yui-har]

You can use macros in comments and custom fields (Format: Long text, Full-width layout checked), but the mermaid macro doesn't seem to work in these input fields (diagrams don't show).

I'm sorry, "Regular expression" was set in the custom field and this regular expression check resulted in an error. After removing "Regular expression", the diagram was shown.

[yui-har]

98354cf9559f8edd31bfc9e4786f943f70d92782 I confirmed that the diagram is shown in the comment section.