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Subject: how to delete groups despite backend
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Debugger entered--Lisp error: (error "This back end does not support group deletion")
  signal(error ("This back end does not support group deletion"))
  error("This back end does not support group deletion")
  gnus-group-delete-group("nndoc+/tmp/m4m:m4m" nil)
  call-interactively(gnus-group-delete-group)

So how does one delete it?

Open heart surgery on .newsrc.eld? But I don't have a doctors'
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