Tmux wrapper w/ zsh autocomplete

gistfile1.sh

## In `.zshrc`

# The autocomplete function should set `reply` to an array of possibilities
function tmux_sessions() { reply=( $(ta --available) ) }
compctl -K tmux_sessions ta

## In `/path/to/ta` - which should be executable and on your path

#!/usr/bin/env ruby

session = ARGV.first

if session == "--available"
  puts `tmux list-sessions`.lines.map { |l| l.split(":").first }.join " "
  exit
end

opts = session.nil? ? "" : "-t #{session}"
cmd  = ENV['TMUX'] ? "switch" : "attach"

system "tmux #{cmd} #{opts}".strip