If you nest tags, for example <color:red>red<color:blue>blue</color>red</color>, this will not work.
Could this be fixed? Here is the example:
http://www.plantuml.com/plantuml/uml/SoWkIImgAStDuLBCIoqkIKs9BqbCBrQmLL2oISxFoI-oAafDiGDYA2yffpJL3aJOw8C5G58mfX9NIMP9Jge2aZbS3gbvAK330G00
And, if yes, can it be hot-fixed in a version prior to PreprocessorV2 too?
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Why not close the tags before opening a new one? like:
@startuml!nested_tags = "<color:red>red</color><color:blue>blue</color><color:red>red</color>"title nested_tags@enduml