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#!/bin/sh
if [ -n "$SSH_CLIENT" ] || [ -n "$SSH_TTY" ]; then
tmux_sock=$(tmux display -p "#{socket_path}")
tmux -S "${tmux_sock}.control" run-shell "$(basename "$0") $*"
exit 0
fi
HOST=$(tmux display -p '#h' 2>/dev/null)
ATTACHED=$(tmux display -p "#{?#{m:*ssh,#{socket_path}},#{s/_/./:session_name},#{host}}")
if [ "$#" -eq 0 ]; then
set -- "$(
sshr --resolve --exclude "$ATTACHED" |
fzf-tmux -p20%,20% -- --print-query |
tail -1
)"
elif [ "$1" = "-1" ] 2>/dev/null; then
set -- "$(sshr --exclude "$ATTACHED" | head -n1)"
fi
if [ -z "$1" ]; then
exit 0
fi
while read -r k v; do
case "$k" in
"hostname")
hostname=$v
session=$(printf '%s' "$v" | tr '.' '_')
break
;;
esac
done <<-EOF
$(ssh -G "$@")
EOF
if [ "${hostname##"$HOST"}" != "$hostname" ]; then
tmux detach -E 'tmux new -A'
else
if ! tmux -L ssh has-session -t "$session"; then
tmux -L ssh new-session -ds "$session" -- \
ssh -t "$@" \
-R "/tmp/tmux-${HOST}.control:/tmp/tmux-%i/ssh" \
-- "zsh -l -c 'tmux -S /tmp/tmux-${HOST} new -A'"
fi
if [ -z "$TMUX" ]; then
tmux -L ssh attach -t "$session"
else
tmux detach -E "tmux -L ssh attach -t $session"
fi
exit 0
fi
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