From ca37a9776ce6511d22e8e695a551b90759b0e4b4 Mon Sep 17 00:00:00 2001
From: Michele Locati <michele@locati.it>
Date: Tue, 13 Mar 2018 17:13:26 +0100
Subject: Check git version

---
 bin/incremental-git-filterbranch.sh | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/bin/incremental-git-filterbranch.sh b/bin/incremental-git-filterbranch.sh
index 6bb965f..1105e07 100755
--- a/bin/incremental-git-filterbranch.sh
+++ b/bin/incremental-git-filterbranch.sh
@@ -250,12 +250,23 @@ checkEnvironment () {
 	fi
 	if ! command -v cut >/dev/null
 	then
-		die 'The required grep command is not available.'
+		die 'The required cut command is not available.'
+	fi
+	if ! command -v sort >/dev/null
+	then
+		die 'The required sort command is not available.'
 	fi
 	if ! command -v md5sum >/dev/null
 	then
 		die 'The required md5sum command is not available.'
 	fi
+	checkEnvironment_vMin='2.15.0'
+	checkEnvironment_vCur=$(git --version | cut -d ' ' -f3)
+	checkEnvironment_vWork=$(printf "${checkEnvironment_vCur}\n${checkEnvironment_vMin}" | sort -t '.' -n -k1,1 -k2,2 -k3,3 -k4,4 | head -n 1)
+	if test "${checkEnvironment_vWork}" != "${checkEnvironment_vMin}"
+	then
+		die "This script requires git ${checkEnvironment_vMin} (you have git ${checkEnvironment_vWork})."
+	fi
 }
 
 
-- 
cgit v1.2.3