From a0ab5e86b504bd9d21ecd402387b605969fe98a2 Mon Sep 17 00:00:00 2001
From: Matt Johnston <matt@ucc.asn.au>
Date: Wed, 28 Feb 2018 23:42:57 +0800
Subject: [PATCH] more portable for `which hg` test

---
 configure.ac | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/configure.ac b/configure.ac
index c485393..6621120 100644
--- a/configure.ac
+++ b/configure.ac
@@ -10,7 +10,7 @@ AC_INIT
 AC_CONFIG_SRCDIR(buffer.c)
 
 # Record which revision is being built
-if which -s hg && test -d "$srcdir/.hg"; then
+if test -s "`which hg`" && test -d "$srcdir/.hg"; then
 	hgrev=`hg id -i -R "$srcdir"`
 	AC_MSG_NOTICE([Source directory Mercurial base revision $hgrev])
 fi