[gnu.emacs.bug] minibuffer-complete-word doesn't work with environment variables

perm@mizar.docs.uu.se (Per Mildner) (06/02/89)

In GNU Emacs 18.53.3 of Mon May  8 1989 on mizar (berkeley-unix)

in my .login
setenv GNU /usr/local/src/gnu

Doing C-x C-F
and in minibuffer:
$GNU/s<spc>
replaces the content in the minibuffer with a single '/'.
minibuffer-complete does the right thing.