Executing Editor Updates During IDE Shutdown (dispose)

IntelliJ Platform
1

I’m trying to automatically execute some logic that modifies the editor’s content when the IDE is closed.

override fun dispose() {
    WriteCommandAction.runWriteCommandAction(project) {
        log.info("Editor old state:\n```\n${editor.document.text}\n```")
        editor.document.deleteString(startOffset, endOffset)
        log.info("Editor new state:\n```\n${editor.document.text}\n```")
    }
}

Example

  • runIde is closing.
  • editor old state:
a
b
c
  • delete b
  • editor new state:
a
c

but in another’s IDE

a
b
c

I’ve added some logging for debugging purposes. When I close the generated IDE (runIde), the main IDE can still hit breakpoints, and I can see the logs showing the expected updates — specifically, the new state reflect the deleted code.

However, when I open the same file in another editor to verify, the changes don’t seem to be applied — the line isn’t actually deleted.

Does anyone have suggestions on how to properly update the editor document during IDE shutdown?