+
+ O_OBJECT=`cd "$GIT_OBJECT_DIRECTORY" && pwd`
+ rm -fr .patch-merge-*
+
+ if git-apply -z --index-info "$PATCHFILE" \
+ >.patch-merge-index-info 2>/dev/null &&
+ GIT_INDEX_FILE=.patch-merge-tmp-index \
+ git-update-index -z --index-info <.patch-merge-index-info &&
+ GIT_INDEX_FILE=.patch-merge-tmp-index \
+ git-write-tree >.patch-merge-tmp-base &&
+ (
+ mkdir .patch-merge-tmp-dir &&
+ cd .patch-merge-tmp-dir &&
+ GIT_INDEX_FILE="../.patch-merge-tmp-index" \
+ GIT_OBJECT_DIRECTORY="$O_OBJECT" \
+ git-apply $binary --index
+ ) <"$PATCHFILE"
+ then
+ echo Using index info to reconstruct a base tree...
+ mv .patch-merge-tmp-base .patch-merge-base
+ mv .patch-merge-tmp-index .patch-merge-index
+ else
+ (
+ N=10
+
+ # Otherwise, try nearby trees that can be used to apply the
+ # patch.
+ git-rev-list --max-count=$N HEAD
+
+ # or hoping the patch is against known tags...
+ git-ls-remote --tags .
+ ) |
+ while read base junk
+ do
+ # Try it if we have it as a tree.
+ git-cat-file tree "$base" >/dev/null 2>&1 || continue
+
+ rm -fr .patch-merge-tmp-* &&
+ mkdir .patch-merge-tmp-dir || break
+ (
+ cd .patch-merge-tmp-dir &&
+ GIT_INDEX_FILE=../.patch-merge-tmp-index &&
+ GIT_OBJECT_DIRECTORY="$O_OBJECT" &&
+ export GIT_INDEX_FILE GIT_OBJECT_DIRECTORY &&
+ git-read-tree "$base" &&
+ git-apply --index &&
+ mv ../.patch-merge-tmp-index ../.patch-merge-index &&
+ echo "$base" >../.patch-merge-base
+ ) <"$PATCHFILE" 2>/dev/null && break
+ done
+ fi
+
+ test -f .patch-merge-index &&
+ his_tree=$(GIT_INDEX_FILE=.patch-merge-index git-write-tree) &&
+ orig_tree=$(cat .patch-merge-base) &&
+ rm -fr .patch-merge-* || exit 1
+
+ echo Falling back to patching base and 3-way merge using $orig_tree...
+
+ # This is not so wrong. Depending on which base we picked,
+ # orig_tree may be wildly different from ours, but his_tree
+ # has the same set of wildly different changes in parts the
+ # patch did not touch, so resolve ends up cancelling them,
+ # saying that we reverted all those changes.
+
+ if git-merge-resolve $orig_tree -- HEAD $his_tree
+ then
+ echo Done.
+ else
+ echo Failed to merge in the changes.
+ exit 1
+ fi