Comment 14 for bug 778627

SOLUTION: This was a bug in bash which is fixed in patch bash4.2-029. See

I build from source as follows:
  - downlaod bash-4.2.tar.gz from
  - extract
  - download patches bash42-001 through bash42-029 (actually I did all through 037) from
 - apply patches
 - ./configure --prefix=/usr/local; make; make install

Using this /usr/local/bash fixes the problem -- tab completion on environment variables works again.

Can these patches please be applied to the package in precise and oneiric?