fix: separate Bash import streams

map/skk2ktrans

@@ -1,8 +1,22 @@
-#!/usr/bin/env bash
+#!/bin/bash
 
 set -euo pipefail
 
-iconv -f EUC-JP -t UTF-8 "$@" | awk '
+transcode()
+{
+	local file
+
+	if (( $# == 0 )); then
+		iconv -f EUC-JP -t UTF-8
+		return
+	fi
+	for file in "$@"; do
+		iconv -f EUC-JP -t UTF-8 "$file"
+		printf '\n'
+	done
+}
+
+transcode "$@" | awk '
 function fail(s) {
 	print "skk2ktrans: " FILENAME ":" FNR ": " s >"/dev/stderr"
 	bad = 1