completions/ssh: Include global ssh hosts

[plasmastorm]

Partial fix for #568

[akinomyoga]

Thank you for your contribution. I merged another PR of ssh_config #529. The suggested addition of the support for /etc/ssh/ssh_{config,known_hosts} is good. However, I'd like to reduce the code duplicates before merging.

Could you rebase on top of the latest master and modify the code to store the found files in an array and run e.g. awk /^HOST/ ... "${config_files[@]}" at once?

local -a config_files=()
if [[ -r ~/.ssh/config ]]; then
  config_files+=(~/.ssh/config)
  ...
fi
if [[ -r /etc/ssh/ssh_config ]]; then
  config_files+=(/etc/ssh/ssh_config)
fi
COMPREPLY+=($(compgen -W "$(awk '/^Host/ {for (i=2; i<=NF; i++) print $i}' "${config_files[@]}")" "${options[@]}"))

Similar for known_hosts.

[plasmastorm]

Will do - /etc/ssh/ssh_config can also Include files, worth trying to work it in with the new changes by looping over both config files?

[akinomyoga]

Ah, right. I think the Include there can also be processed.