bug#63337: [PATCH] package-vc--build-documentation: Fix relative @include statements

[Ruijie Yu]

Joseph Turner via "Bug reports for GNU Emacs, the Swiss army knife of text 
editors" <bug-gnu-emacs@gnu.org> writes:

> + (file-path (expand-file-name file (package-desc-dir pkg-desc)))
> + (default-directory (expand-file-name (file-name-directory file-path)))
>
> (package-desc-dir pkg-desc) may return a relative path with or without a
> directory, e.g. "doc/manual.org" or "manual.org". In the latter case,
> (file-name-directory "manual.org") would return `nil' and
> (expand-file-name nil) would signal an error.

In this case, can't you do this instead:

    (expand-file-name (or (file-name-directory ...) "."))

?

-- 
Best,


RY