From 2ea13e19bf446e45eae2741403462b6fcd679c1a Mon Sep 17 00:00:00 2001
From: Peter Bex <peter@more-magic.net>
Date: Thu, 4 Oct 2012 23:07:51 +0200
Subject: Use shell arithmetic instead of "bc". It's more portable

---
 tests/run.scm | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/tests/run.scm b/tests/run.scm
index ab023eb..2ad287f 100644
--- a/tests/run.scm
+++ b/tests/run.scm
@@ -68,7 +68,9 @@
     (let ((echo-command 'echo))
       (test "Subprocess piped to another process, writing to a file"
             "1235\n"
-            (begin (run (pipe (,echo-command "1234" + 1) ("bc")) (> outfile))
+            (begin (run (pipe (,echo-command "1234" + 1)
+                              ("sh" -c "read foo; echo $(($foo))"))
+                        (> outfile))
                    (read-all "outfile"))))
     (delete-file* "outfile")
 
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