# @FUNCTION: optfeature

# @USAGE: <short description> <package atom to match> [other atoms]

# @DESCRIPTION:

# Print out a message suggesting an optional package (or packages) which

# provide the described functionality

#

# The following snippet would suggest app-misc/foo for optional foo support,

# and app-misc/bar or app-misc/baz[bar] for optional bar support.

# @CODE:

# 		optfeature "foo support" app-misc/foo

# 		optfeature "bar support" app-misc/bar app-misc/baz[bar]

#

optfeature() {

	debug-print-function ${FUNCNAME} "$@"

	local i

	local desc=$1

	local flag=0

	shift

	for i; do

		if has_version "$i"; then

			flag=1

			break

		fi

	done

	if [[ $flag -eq 0 ]]; then

		for i in "$@"; do

			elog "  $i for ${desc}"

		done

	fi

}