Subject: texinfo-format-buffer does not work in calc.texi

From: Stefan Kangas <[email-masked]>
Date: Wed, 10 Aug 2022 03:18:33 -0700

Running `texinfo-format-buffer' in "doc/misc/calc.texi" leads to:

    Debugger entered--Lisp error: (error "Texinfo file needs an
‘@setfilename FILENAME’ line")
      error("Texinfo file needs an `@setfilename FILENAME' line")
      texinfo-format-buffer-1()
      texinfo-format-buffer(nil)
      funcall-interactively(texinfo-format-buffer nil)
      command-execute(texinfo-format-buffer)

Of course, that file does have:

    @setfilename ../../info/calc.info