Merge branch 'jc/rerere-train-modernise'

Small modernization of the rerere-train script (in contrib/).

* jc/rerere-train-modernise:
  rerere-train: two fixes to the use of "git show -s"

contrib/rerere-train.sh

@@ -86,7 +86,7 @@ do
 	fi
 	if test -s "$GIT_DIR/MERGE_RR"
 	then
-		git show -s --pretty=format:"Learning from %h %s" "$commit"
+		git --no-pager show -s --format="Learning from %h %s" "$commit"
 		git rerere
 		git checkout -q $commit -- .
 		git rerere