Stefan Monnier wrote:
> The old $EMACS setting was declared obsolete many years ago. It looks
> like "the Bash folks" didn't notice yet.
>
> Hopefully beaab89896 will make them notice,
Paul mailed them:
http://lists.gnu.org/archive/html/bug-bash/2015-03/msg00179.html
It was applied to the "devel" branch soon after:
http://git.savannah.gnu.org/cgit/bash.git/diff/shell.c?h=devel&id=0385211bb5cb01e0259c64ec2c5cc6337d4e215c
So, the point has been made, but it will take a long time for this to
get into the default bash on all the systems Emacs supports.