From 9f29493dcd93c17f0f635c7388c713a2bc4a6211 Mon Sep 17 00:00:00 2001
From: Stephen Rothwell <sfr@canb.auug.org.au>
Date: Tue, 20 Jan 2009 11:21:05 +1100
Subject: [PATCH] New utiltiy (mainly for akpm)

---
 find_branch | 29 +++++++++++++++++++++++++++++
 1 file changed, 29 insertions(+)
 create mode 100755 find_branch

diff --git a/find_branch b/find_branch
new file mode 100755
index 0000000..95c3bfa
--- /dev/null
+++ b/find_branch
@@ -0,0 +1,29 @@
+#!/bin/bash
+
+commit=$1
+[ "$commit" ] || {
+	echo "$0: <commit id> [<top tag> [<linus branch>]]" 1>&2
+	exit 1
+}
+
+top=$2
+[ "$top" ] || top=HEAD
+
+linus=$3
+[ "$linus" ] || linus=origin/master
+
+base=$(git merge-base "$linus" "$top")
+
+git log --first-parent --pretty='format:%H %P' "$base".."$top" |
+while read m p1 p2
+do
+	[ "$p2" ] || continue
+	git rev-list $base..$p2 | grep -q "$commit" || continue
+	branch=$(git show $m | sed -n "s/[ 	]*Merge .* '\([^']*\)'/\1/p")
+	tree=${branch%%/*}
+	[ "$tree" = "quilt" ] && tree=${branch##*/}
+	echo "$tree"
+	break
+done
+
+exit 0
-- 
2.39.2