ohmyzsh/plugins/tmux/tmux.plugin.zsh

# Configuration variables
# Automatically start tmux
[[ -n "$ZSH_TMUX_AUTOSTART" ]] || ZSH_TMUX_AUTOSTART=false
# Automatically connect to a previous session if it exists
[[ -n "$ZSH_TMUX_AUTOCONNECT" ]] || ZSH_TMUX_AUTOCONNECT=true
# Automatically close the terminal when tmux exits
[[ -n "$ZSH_TMUX_AUTOQUIT" ]] || ZSH_TMUX_AUTOQUIT=$ZSH_TMUX_AUTOSTART
# Set term to screen or screen-256color based on current terminal support
[[ -n "$ZSH_TMUX_FIXTERM" ]] || ZSH_TMUX_AUTOCONNECT=true

# Get the absolute path to the current directory
local zsh_tmux_plugin_path="$(cd "$(dirname "$0")" && pwd)"

# Determine if the terminal supports 256 colors
if [[ `tput colors` == "256" ]]
then
	export $ZSH_TMUX_TERM="screen-256"
else
	export $ZSH_TMUX_TERM="screen"
fi

# Local variable to store the local config file to use, if any.
local fixed_config=""

# Set the correct local config file to use
if [[ "$ZSH_TMUX_FIXTERM" == "true" ]]
then
	if [[ -f $HOME/.tmux.conf || -h $HOME/.tmux.conf ]]
	then
		#use this when they have a ~/.tmux.conf
		fixed_config=$zsh_tmux_plugin_path/tmux.extra.conf
	else
		#use this when they don't have a ~/.tmux.conf
		fixed_config=$zsh_tmux_plugin_path/tmux.only.conf
	fi
fi

# Override tmux with our function
function zsh_tmux_plugin_start()
{
	# We have other arguments, just run them
	if [[ ! -n "$@" ]]
	then
		\tmux $@
	# Try to connect to an existing session.
	elif [[ "$ZSH_TMUX_AUTOCONNECT" == "true" ]]
	then
		\tmux attach || tmux -f $fixed_config new-session
		[[ "$ZSH_TMUX_AUTOQUIT" == "true" ]] && exit
	# Just try to fix the TERM variable.
	else
		\tmux -f $fixed_config
		[[ "$ZSH_TMUX_AUTOQUIT" == "true" ]] && exit
	fi
}

alias tmux=zsh_tmux_plugin_start