Add Bash completion

[FedericoCeratto]

No description provided.

[dom96]

Nice!

[oderwat]

This line gives an error on my system (OSX). I simply removed it.. Is this working on Linux?

[dom96]

@FedericoCeratto ^

[FedericoCeratto]

@oderwat it is.

[oderwat]

Well Macs bash completion doesn't have this for the installed version of the completion. One could add a minimal version which looks like this:

__my_init_completion()
{
    COMPREPLY=()
    _get_comp_words_by_ref cur prev words cword
}

# called like this example
local cur prev words cword
if declare -F _init_completions >/dev/null 2>&1; then
 _init_completion -s || return
else
  __my_init_completion || return
fi

But afais it is not at all needed for your completion code and works without it. Why not remove it or just call it if it is available?