tm.sh

_tm_complete() {
    COMPREPLY=()
    local SESSIONS=$(tmux list-sessions | cut -f 1 -d :)
    if [ ${#COMP_WORDS[@]} -eq 2 ]; then
        local cur=${COMP_WORDS[COMP_CWORD]}
        COMPREPLY=($(compgen -W "$SESSIONS" -- $cur))
    fi
}
complete -F _tm_complete tm

function tm {
    session_name=$1
    if [ -z "$session_name" ]; then
        echo "ERROR: Must provide session name as argument."
        return 1
    fi
    if tmux has-session -t "$session_name"; then
        command tmux attach -t $session_name
    else
        command tmux new -s $session_name
    fi
}