contrib/examples/README: give an explanation of the status of these files

diff --git a/contrib/examples/git-checkout.sh b/contrib/examples/git-checkout.sh
index 5621c69d86062c7c75c0b8c2749d34efc78cafb4..1a7689a48f07a6ed2bb156f745bfea19a10e3eb9 100755 (executable)
--- a/contrib/examples/git-checkout.sh
+++ b/contrib/examples/git-checkout.sh
@@ -71,7 +71,8 @@ while test $# != 0; do
 done
 
 arg="$1"
-if rev=$(git rev-parse --verify "$arg^0" 2>/dev/null)
+rev=$(git rev-parse --verify "$arg" 2>/dev/null)
+if rev=$(git rev-parse --verify "$rev^0" 2>/dev/null)
 then
        [ -z "$rev" ] && die "unknown flag $arg"
        new_name="$arg"
@@ -82,11 +83,11 @@ then
        fi
        new="$rev"
        shift
-elif rev=$(git rev-parse --verify "$arg^{tree}" 2>/dev/null)
+elif rev=$(git rev-parse --verify "$rev^{tree}" 2>/dev/null)
 then
        # checking out selected paths from a tree-ish.
        new="$rev"
-       new_name="$arg^{tree}"
+       new_name="$rev^{tree}"
        shift
 fi
 [ "$1" = "--" ] && shift
@@ -209,11 +210,14 @@ then
     git read-tree $v --reset -u $new
 else
     git update-index --refresh >/dev/null
-    merge_error=$(git read-tree -m -u --exclude-per-directory=.gitignore $old $new 2>&1) || (
-       case "$merge" in
-       '')
-               echo >&2 "$merge_error"
+    git read-tree $v -m -u --exclude-per-directory=.gitignore $old $new || (
+       case "$merge,$v" in
+       ,*)
                exit 1 ;;
+       1,)
+               ;; # quiet
+       *)
+               echo >&2 "Falling back to 3-way merge..." ;;
        esac
 
        # Match the index to the working tree, and do a three-way.