bug#57114: 29.0.50; texinfo-format-buffer in auth.texi leads to backtrace

[Eli Zaretskii]

> From: Stefan Kangas <stefan@marxist.se>
> Date: Wed, 10 Aug 2022 05:24:57 -0700
> 
> Running `texinfo-format-buffer' in "doc/misc/auth.texi" leads to:
> 
> Debugger entered--Lisp error: (file-missing "Opening input file" "No
> such file or directory"
> "/home/skangas/wip/emacs/doc/misc/docstyle.texi")
>   insert-file-contents("/home/skangas/wip/emacs/doc/misc/docstyle.texi"
> nil nil nil nil)
>   apply(insert-file-contents
> ("/home/skangas/wip/emacs/doc/misc/docstyle.texi" nil nil nil nil))
>   openwith-file-handler(insert-file-contents
> "/home/skangas/wip/emacs/doc/misc/docstyle.texi" nil nil nil nil)
>   texinfo-format-buffer-1()
>   texinfo-format-buffer(nil)
>   funcall-interactively(texinfo-format-buffer nil)
>   command-execute(texinfo-format-buffer)
> 
> The same seems to be true for most other manuals in doc/misc/*.texi but
> I only tried a handful of them.  One idea is that any file including the
> below line will have the same problem:
> 
>     @include docstyle.texi

Yes, because you invoke the command incorrectly (in the wrong
directory).

This is not a bug.