Add support for plantuml file (*.puml)

[gerryhjs]

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• This issue/feature request is not reported before.

Your programming languages

plantml

Expected Behavior

• Rainbow brackets works

Current Behavior

• Rainbow brackets doesn't works

Code examples

package "Some Group" {
  HTTP - [First Component]
  [Another Component]
}

node "Other Groups" {
  FTP - [Second Component]
  [First Component] --> FTP
}

cloud {
  [Example 1]
}


database "MySql" {
  folder "This is my folder" {
    [Folder 3]
  }
  frame "Foo" {
    [Frame 4]
  }
}

[gerryhjs]

Relate plugin:
https://plugins.jetbrains.com/plugin/7017-plantuml-integration

[izhangzhihao]

Due to the poor implementation of the PSI tree in plantuml plugin, I decided not to implement this feature now.

[gerryhjs]

This is an understandable reason.
I'll close the issue.

[izhangzhihao]

Pls try this build snapshot and share your feedback:

intellij-rainbow-brackets-2025.3.8.zip

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A quick review here would mean the world to me:

👉 https://plugins.jetbrains.com/plugin/10080-rainbow-brackets/reviews

Thank you so much for your support! Happy coding! 🎨