diff --git a/sh/log.sh b/sh/log.sh
index 1674324..4e7a63e 100644
--- a/sh/log.sh
+++ b/sh/log.sh
@@ -58,7 +58,10 @@ _sh_log() {
 	shift
 	local line
 	for line in "${@}"; do
-		[ -n "${prefix}" ] && printf "%s" "${prefix} "
-		echo "${line}"
+		if [ -n "${prefix}" ]; then
+			_sh_main_log "${prefix} ${line}"
+		else
+			_sh_main_log "${line}"
+		fi
 	done
 }
diff --git a/sh/main.sh b/sh/main.sh
index 4fbecc3..1cc1116 100644
--- a/sh/main.sh
+++ b/sh/main.sh
@@ -70,9 +70,10 @@ _sh_main_commands() {
 _sh_main_log() {
 	case "${-}" in
 	*i*)
-		local argument
-		for argument in "${@}"; do
-			echo "${argument}"
+		[ -n "${1}" ] || set -- ""
+		local line
+		for line in "${@}"; do
+			echo "${line}"
 		done
 		;;
 	*) ;;