Merge pull request skonfig#152 from skonfig/4nd3r/__file/test-e

__file: allow source to be character special (test -c)

Author: 4nd3r

type/__file/gencode-local

@@ -43,12 +43,13 @@ then
 			source="${__object:?}/stdin" ;;
 	esac
 
-	test -f "${source}" || {
+	if test ! -f "${source}" && test ! -c "${source}"
+	then
 		printf 'Source %s does not exist.\n' "${source}" >&2
 		# NOTE: ignore for dry runs, because the file could be generated by
 		#       skonfig (e.g. __staged_file).
 		test -n "${__cdist_dry_run+y}" || exit 1
-	}
+	fi
 fi