bash-builtins 0.4.1

This crate provides utilities to implement loadable builtins for bash.
Documentation 
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RED[2] = Some("C")
RED[3] = None
declare -a RED=([0]="A" [1]="X" [2]="C")
GREEN[abc] = Some("X")
GREEN[def] = None
GREEN["abc"] = "X"
declare -A GREEN=([abc]="X" )
Y AAA
unset: RED
EMPTY
EMPTY