bash-completions

These completions scripts need to be found by bash. If using bash-it, this is achieved by sourcing completion scripts in ~/.bash_it/custom/custom.completion.bash (see https://github.com/Bash-it/bash-it#your-custom-scripts-aliases-themes-and-functions)

resources:

https://www.gnu.org/software/bash/manual/html_node/Programmable-Completion-Builtins.html#Programmable-Completion-Builtins

http://fahdshariff.blogspot.co.uk/2011/04/writing-your-own-bash-completion.html

boom: https://github.com/maandree/auto-auto-complete