diagram ids

[DaelDe]

Is your feature request related to a problem? Please describe.
Plantuml allows to assign an ID to a diagram for the purpose of reuse.

@startuml(id=MY_OWN_ID)
@enduml

See: http://plantuml.com/de/preprocessing

Describe the solution you'd like
Either the ID is parsed or everything after @startuml is ignored.

[DaelDe]

I would actually prefer that additional content after @startuml is ignored.

My use case is that diagrams are included in doxygen. In this context the command can have parameters.

[Enteee]

good catch, there is very little documentation around this id feature.

Also the online plantuml parser just strips that Infomation. So I would assume this id should just contain all non white space ascii characters. What is still unclear to me is if id also supports quoting and what the expected bahaviour should be if there are whitespaces in the id

@startuml(id=what is the id now?)
Bob -> Alice : hello
@enduml

[Enteee]

just noticed that a missing closing parenthesis does not yield an error in plantuml

@startuml(id=missing
@enduml

this is something I don't what to support.

[Enteee]

I think using the Name terminal here is what we want.

Name
  = name:([A-Za-z0-9._]+)
  {
    return name.join('');
  }