element definition location in priority

[SailorMax]

Proposal

Detect element definition (without connections) and use it's location as priority to use as parent subgraph.

Currently mermaid output element in subgraph where it used first time. But sometime it has to be in another.

Example

flowchart LR;

    subgraph current version - b in 1.1 but we need in 1.2
        direction LR;
        subgraph 1.1
            a-->b
        end

        subgraph 1.2
            b-->c
        end
    end


    subgraph manual fix - to put bb in 2.2 we have to move 2.2 before 2.1
        direction LR;
        subgraph 2.2
            bb-->cc
        end

        subgraph 2.1
            aa-->bb
        end
    end

    subgraph suggest defintions - bbb has to be in 3.2
        direction LR;
        subgraph 3.1
            aaa-->bbb
        end

        subgraph 3.2
            %% define bbb here to output it in current subgraph
            bbb
            bbb-->ccc
        end
    end

Screenshots