footnote in any markup

[Richard Shann]

I've noticed that the following does not work:

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\version "2.24.1"
\score  {
        { a'4 f' ^\markup {
    "A simple"  \auto-footnote "tune" \italic " By me"
  } g'4 }
}
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I'm guessing this is something that simply can't be done but if so I
didn't guess it from the documentation. Should it be mentioned under
"Known Issues and Warnings"?

Richard Shann