dir and Info-additional-directory-list

[Kevin Ryde]

In GNU Emacs 21.1.1 (i386-debian-linux-gnu, X toolkit, Xaw3d scroll bars)
 of 2001-12-07 on raven, modified by Debian
configured using `configure  i386-debian-linux-gnu --prefix=/usr 
--sharedstatedir=/var/lib --libexecdir=/usr/lib --localstatedir=/var/lib 
--infodir=/usr/share/info --mandir=/usr/share/man --with-pop=yes --with-x=yes 
--with-x-toolkit=athena --without-gif'
Important settings:
  value of $LC_ALL: nil
  value of $LC_COLLATE: nil
  value of $LC_CTYPE: nil
  value of $LC_MESSAGES: nil
  value of $LC_MONETARY: nil
  value of $LC_NUMERIC: nil
  value of $LC_TIME: nil
  value of $LANG: nil
  locale-coding-system: nil
  default-enable-multibyte-characters: t


The docstring for Info-additional-directory-list says that directories
in that list are not searched for "dir" files, however it seems that
in fact they are.

I made files /tmp/x/dir and /tmp/y/dir with likely contents (pruned
copies of my main /usr/info/dir) and from emacs -q -no-site-file
executed

  (progn (setq Info-directory-list            '("/tmp/x"))
         (setq Info-additional-directory-list '("/tmp/y"))
         (Info-directory))

It brought up the contents of both /tmp/x/dir and /tmp/y/dir, whereas
the docstring suggests I should get only the former.


I see the ChangeLog indicates this was a deliberate change, so maybe
the variable merely needs its description updated.