How to handle tool-specific magic comments

[Earlopain]

rdoc currently removes shebangs and ruby magic comments from rendered documetantion.

But other tools like sorbet and rbs-inline provide their own comments like # typed: true or rbs_inline: enabled which aren't excluded. If I have a file like this:

# frozen_string_literal: true
# rbs_inline: enabled
# :markup: markdown

module Prism
  module Foo
    # ...
  end
end

Then for each file, you get one rbs_inline comment on the top-level namespace. I feel like either rdoc should

• ignore any magic-style comment, regardless of if it is "official" or not
• Not attach comments where there is whitespace before the top-level. I guess this is not feasable for backwards compat since rdoc itself makes heavy use of that style.

This can be worked around by inserting #-- before the magic comments but I don't think I should need to care about this at all.