tg-summary.sh: Reuse already available base rev information

diff --git a/tg-summary.sh b/tg-summary.sh
index 89b638b9b817476d885fa9cc038f49e552d5a839..a1f8366ba26f75a35afd59a5a3fb4fa052eb5366 100644 (file)
--- a/tg-summary.sh
+++ b/tg-summary.sh
@@ -17,7 +17,7 @@ fi
 git for-each-ref refs/heads | cut -f 2 |
        while read ref; do
                name="${ref#refs/heads/}"
-               git rev-parse --verify "refs/top-bases/$name" >/dev/null 2>&1 ||
+               base_rev="$(git rev-parse --verify "refs/top-bases/$name" 2>/dev/null)" ||
                        continue # not a TopGit branch
 
                deps_update=' '
@@ -25,7 +25,7 @@ git for-each-ref refs/heads | cut -f 2 |
                base_update=' '
                branch_contains "$name" "refs/top-bases/$name" || base_update='B'
 
-               if [ "$(git rev-parse "$name")" != "$(git rev-parse "refs/top-bases/$name")" ]; then
+               if [ "$(git rev-parse "$name")" != "$base_rev" ]; then
                        subject="$(git cat-file blob "$name:.topmsg" | sed -n 's/^Subject: //p')"
                else
                        # No commits yet