From adb145f4cce5dfe8bc2ac276c5fb347ea6806d24 Mon Sep 17 00:00:00 2001
From: "Jan (janneke) Nieuwenhuizen" <janneke@gnu.org>
Date: Thu, 16 Jul 2020 21:44:40 +0200
Subject: [PATCH] core: read_string: Prepare for M2-Planet.

* src/string.c (read_string): Prepare for M2-Planet.
---
 src/string.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/string.c b/src/string.c
index a8e26de9..639c3c4c 100644
--- a/src/string.c
+++ b/src/string.c
@@ -169,8 +169,9 @@ SCM
 read_string (SCM port)          /*:((arity . n)) */
 {
   int fd = __stdin;
-  if (TYPE (port) == TPAIR && TYPE (car (port)) == TNUMBER)
-    __stdin = VALUE (CAR (port));
+  if (TYPE (port) == TPAIR)
+    if (TYPE (car (port)) == TNUMBER)
+      __stdin = VALUE (CAR (port));
   int c = readchar ();
   size_t i = 0;
   while (c != -1)