# Enhancement of eselect core lib to also show function names.
# Generic cleanup of how array elements are set to make the code readable:
# 	Get rid of lots of unnecessary $(()) and {}.
# sourcefile setting should be 'n', not 'n-1'

shopt -s extdebug

# usage- first arg is the number of funcs on the stack to ignore.
# defaults to 1 (ignoring dump_trace)
# pulled from eselect.
die() {
	local funcname="" sourcefile="" lineno="" n e s="yes" args newarg

	declare -i strip=1

	if [[ -n $1 ]]; then
		strip=$(( $1 ))
	fi
	
	echo "Call stack: (most recent first)" 1>&2
	for (( n = $strip, p = 0 ; n < ${#FUNCNAME[@]} ; ++n )) ; do
		funcname=${FUNCNAME[$n - 1]}
		sourcefile=$(basename ${BASH_SOURCE[$n]})
		lineno=${BASH_LINENO[$n - 1]}
		# Display function arguments
		if [[ ! -z "${BASH_ARGV[@]}" ]]; then
			args=
			for (( j = ${BASH_ARGC[$n - 1]}; j > 0; j-- )); do
				newarg=${BASH_ARGV[$j + $p - 1]}
				args="${args:+${args} }'${newarg}'"
			done
			(( p += ${BASH_ARGC[$n - 1]} ))
		fi
		echo "  ${funcname} ${args:+${args} }at ${sourcefile}:${lineno}"
	done
}