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# Bail if no ssh(1)
if ! hash ssh 2>/dev/null; then
return
fi
# Wrap scp to check for missing colons
scp() {
if (($# >= 2)) && [[ $* != *:* ]] ; then
printf '%s\n' 'scp: Missing colon, probably an error' >&2
return 1
fi
command scp "$@"
}
# Completion for ssh/sftp/ssh-copy-id with config hostnames
_ssh() {
local word=${COMP_WORDS[COMP_CWORD]}
# Bail if the configuration file is illegible
local config=$HOME/.ssh/config
if [[ ! -r $config ]]; then
COMPREPLY=()
return 1
fi
# Read hostnames from the file, no asterisks
local -a hosts
local option value
while read -r option value _; do
if [[ $option == Host && $value != *'*'* ]]; then
hosts=("${hosts[@]}" "$value")
fi
done < "$config"
# Generate completion reply
COMPREPLY=( $(compgen -W "${hosts[*]}" -- "$word") )
}
complete -F _ssh -o default ssh sftp ssh-copy-id
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