From 7a8b7340a3ce67b2910d5fb60b542e74aba4b605 Mon Sep 17 00:00:00 2001
From: Avery Pennarun <apenwarr@gmail.com>
Date: Sat, 13 Nov 2010 01:29:27 -0800
Subject: [PATCH] Use the SHELL variable instead of assuming 'sh'.

This is what GNU make does.  If SHELL isn't defined, we still fall back to
calling sh.

Rumour has it that Google has some kind of build system that can be
massively distributed if you just set SHELL to the right program; maybe
it'll work with redo now.  (Of course it won't do you any good until we
implement parallel builds...)
---
 redo.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/redo.py b/redo.py
index 3324df0..9b6d038 100755
--- a/redo.py
+++ b/redo.py
@@ -85,7 +85,8 @@ def build(t):
     tmpname = '%s.redo.tmp' % t
     unlink(tmpname)
     f = open(tmpname, 'w+')
-    argv = ['sh', '-e', os.path.basename(dofile),
+    argv = [os.environ.get('SHELL', 'sh'), '-e',
+            os.path.basename(dofile),
             os.path.basename(t), 'FIXME', os.path.basename(tmpname)]
     if vars.VERBOSE:
         argv[1] += 'v'