tmux session management by directory

tcd

#!/bin/bash

attach() {
  tmux attach-session -t ${1:-$name}
}

list() {
  if [[ "$1" == 'short' ]]; then
    local args='-F #{session_name}'
    shift
  fi

  tmux list-session $args | grep "$@" "${name:-$}"
}

exact_match() {
  list short --quiet -x && attach
}

# no match, create new
# one match, use it
# two matches, show options
close_match() {
  # if exact_match is not empty, return 1
  test -z "$exact_match" || return

  matches=( $(list short) )

  case ${#matches[*]} in
    0) # no match
      return
      ;;
    1) # closest match
      attach $matches
      ;;
    *)
      # disambiguate
      list
      ;;
  esac
}

new() {
  # create new windows for each argument
  tmux new-session -d -s $name "$1"
  shift; let i=1
  for arg; do
    tmux new-window -t $name:$i "$arg"
    let i++
  done
  tmux select-window -t $name:0
  tmux attach-session -t $name
}

name=$1
shift

if [ -z "$name" ]; then
  list
  exit
fi

# $name is a valid directory, go to it and start tmux
if [ -d "$name" ]; then
  cd $name
  # force exact match
  exact_match='true'
  name=`basename $PWD`
fi

exact_match || close_match || new "$@"