[bash] Fix completion of var or alias containing newlines (#2952)
[bash] Fix completion of var or alias containing newlines (#2952)

* Fix bash completion var or aliase containing newlines

* Support for various bash declare options

Co-authored-by: knutze <08e82c8932f548d3414558b2b6d43e7d1131d329@gmail.com>
junegunn/fzf,junegunn/fzf,junegunn/fzf