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diff --git a/tests.branching/merge-with-chunk-renamed.script b/tests.branching/merge-with-chunk-renamed.script
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+++ b/tests.branching/merge-with-chunk-renamed.script
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+#!/bin/sh
+# Copyright (C) 2012  Codethink Limited
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; version 2 of the License.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License along
+# with this program; if not, write to the Free Software Foundation, Inc.,
+# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+
+# "morph merge" should pull changes from a chunk even if its name was changed
+# in the branch
+
+set -eu
+
+# Create system branch.
+cd "$DATADIR/workspace"
+"$SRCDIR/scripts/test-morph" init
+"$SRCDIR/scripts/test-morph" branch baserock:morphs baserock/newbranch
+
+# Rename the chunk, and then commit a seperate change
+"$SRCDIR/scripts/test-morph" edit hello-system hello-stratum hello
+cd baserock/newbranch/baserock:hello
+
+cat hello.morph | sed -e 's/"name": "hello"/"name": "goodbye"/' > goodbye.morph
+git rm -q hello.morph
+git add goodbye.morph
+git commit -m "Rename chunk" --quiet
+
+touch newfile.txt
+git add newfile.txt
+git commit -m "Add new file" --quiet
+
+# Update stratum to point at the renamed chunk
+cd ../baserock:morphs
+sed -ie 's/"name": "hello"/"name": "goodbye"/' hello-stratum.morph
+git commit --all --quiet -m "Update morph refs for baserock/newbranch"
+
+# Merge changes back to master
+cd "$DATADIR/workspace"
+"$SRCDIR/scripts/test-morph" checkout baserock:morphs master
+cd master
+"$SRCDIR/scripts/test-morph" merge baserock/newbranch
+
+# Morph should have realised that 'goodbye' is not a new chunk,
+# and pulled in the changes from 'hello' in the old branch
+cd baserock:hello
+[ ! -e hello.morph ]
+[ -e goodbye.morph ]
+[ -e newfile.txt ]