Serious tab completion bug

[Joseph Graham]

Hi,

I don't know what the etiquette is for using this mailing list but I hope 
it's OK to just get straight to the bug.

*STEPS TO REPRODUCE*
1. run the following commands to get everything set up:
   $ touch hiya
   $ mkdir '$HOME'
   $ touch '$HOME/hiya'
2. Now to reproduce the bug, type:
   $ rm "$HOME/hi
   THEN PRESS TAB!
   It incorrectly escapes the $ resulting in:
   $ rm "\$HOME/hiya"
   If the user does not notice and presses return it will DELETE THE 
WRONG FILE!!!

GNU bash, version 4.3.30(1)-release (x86_64-pc-linux-gnu)
libreadline6 6.3-8
Debian Testing

Thankyou for maintaining bash and happy debugging!
Joseph