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-rwxr-xr-xgit-pull.sh13
1 files changed, 10 insertions, 3 deletions
diff --git a/git-pull.sh b/git-pull.sh
index 638aabb7b3..f0df41c841 100755
--- a/git-pull.sh
+++ b/git-pull.sh
@@ -5,7 +5,7 @@
# Fetch one or more remote refs and merge it/them into the current HEAD.
USAGE='[-n | --no-stat] [--[no-]commit] [--[no-]squash] [--[no-]ff] [-s strategy]... [<fetch-options>] <repo> <head>...'
-LONG_USAGE='Fetch one or more remote refs and merge it/them into the current HEAD.'
+LONG_USAGE='Fetch one or more remote refs and integrate it/them with the current HEAD.'
SUBDIRECTORY_OK=Yes
OPTIONS_SPEC=
. git-sh-setup
@@ -266,10 +266,17 @@ case "$merge_head" in
;;
esac
+# Pulling into unborn branch: a shorthand for branching off
+# FETCH_HEAD, for lazy typers.
if test -z "$orig_head"
then
- git update-ref -m "initial pull" HEAD $merge_head "$curr_head" &&
- git read-tree -m -u HEAD || exit 1
+ # Two-way merge: we claim the index is based on an empty tree,
+ # and try to fast-forward to HEAD. This ensures we will not
+ # lose index/worktree changes that the user already made on
+ # the unborn branch.
+ empty_tree=4b825dc642cb6eb9a060e54bf8d69288fbee4904
+ git read-tree -m -u $empty_tree $merge_head &&
+ git update-ref -m "initial pull" HEAD $merge_head "$curr_head"
exit
fi