git-rev-list: use proper lazy reachability analysis

diff --git a/git-commit-script b/git-commit-script
index f8d568ce88ff1e372b94c6dbfaeded149dcf103f..42ee399bc1028ab483aa4678ad376c065d7e7a5d 100755 (executable)
--- a/git-commit-script
+++ b/git-commit-script
@@ -5,9 +5,7 @@ then
        cat .editmsg
        exit 1
 fi
-ED=${VISUAL:$EDITOR}
-ED=${ED:vi}
-$ED .editmsg
+${VISUAL:-${EDITOR:-vi}} .editmsg
 grep -v '^#' < .editmsg | git-stripspace > .cmitmsg
 [ -s .cmitmsg ] || exit 1
 tree=$(git-write-tree) || exit 1