# Drop in to fish shell if:
#   1. Parent shell is not fish
#   2. Not executing a bash command, e.g. 'bash -c'
if [[ $(ps --no-header --pid=$PPID --format=comm) != "fish" && -z ${BASH_EXECUTION_STRING} && ${SHLVL} == 1 ]]
then
	shopt -q login_shell && LOGIN_OPTION='--login' || LOGIN_OPTION=''
	exec fish $LOGIN_OPTION
fi