diff options
| -rw-r--r-- | builtin-checkout.c | 12 | ||||
| -rwxr-xr-x | t/t2015-checkout-unborn.sh | 40 |
2 files changed, 43 insertions, 9 deletions
diff --git a/builtin-checkout.c b/builtin-checkout.c index b8a4b0139b..140168cec4 100644 --- a/builtin-checkout.c +++ b/builtin-checkout.c @@ -402,7 +402,9 @@ static int merge_working_tree(struct checkout_opts *opts, topts.dir = xcalloc(1, sizeof(*topts.dir)); topts.dir->flags |= DIR_SHOW_IGNORED; topts.dir->exclude_per_dir = ".gitignore"; - tree = parse_tree_indirect(old->commit->object.sha1); + tree = parse_tree_indirect(old->commit ? + old->commit->object.sha1 : + (unsigned char *)EMPTY_TREE_SHA1_BIN); init_tree_desc(&trees[0], tree->buffer, tree->size); tree = parse_tree_indirect(new->commit->object.sha1); init_tree_desc(&trees[1], tree->buffer, tree->size); @@ -541,14 +543,6 @@ static int switch_branches(struct checkout_opts *opts, struct branch_info *new) parse_commit(new->commit); } - if (!old.commit && !opts->force) { - if (!opts->quiet) { - warning("You appear to be on a branch yet to be born."); - warning("Forcing checkout of %s.", new->name); - } - opts->force = 1; - } - ret = merge_working_tree(opts, &old, new); if (ret) return ret; diff --git a/t/t2015-checkout-unborn.sh b/t/t2015-checkout-unborn.sh new file mode 100755 index 0000000000..c551d39a66 --- /dev/null +++ b/t/t2015-checkout-unborn.sh @@ -0,0 +1,40 @@ +#!/bin/sh + +test_description='checkout from unborn branch protects contents' +. ./test-lib.sh + +test_expect_success 'setup' ' + mkdir parent && + (cd parent && + git init && + echo content >file && + git add file && + git commit -m base + ) && + git fetch parent master:origin +' + +test_expect_success 'checkout from unborn preserves untracked files' ' + echo precious >expect && + echo precious >file && + test_must_fail git checkout -b new origin && + test_cmp expect file +' + +test_expect_success 'checkout from unborn preserves index contents' ' + echo precious >expect && + echo precious >file && + git add file && + test_must_fail git checkout -b new origin && + test_cmp expect file && + git show :file >file && + test_cmp expect file +' + +test_expect_success 'checkout from unborn merges identical index contents' ' + echo content >file && + git add file && + git checkout -b new origin +' + +test_done |