[PATCH 3/7] fast-import: Allow cat command with empty path

[David Barr <david.barr@cordelta.com>]

From: Jonathan Nieder <jrnieder@gmail.com>

Rather than erroring out, treat an empty path as the path to
the root of a tree so frontends can be simplified a little.

While at it, fix a typo in an error message: the cat command is used
to examine paths within trees, not branches.

Cc: David Barr <david.barr@cordelta.com>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
---
 fast-import.c |    6 +++++-
 1 files changed, 5 insertions(+), 1 deletions(-)

diff --git a/fast-import.c b/fast-import.c
index 099f63e..f3c4123 100644
--- a/fast-import.c
+++ b/fast-import.c
@@ -2702,9 +2702,13 @@ static void quoted_path_sha1(unsigned char sha1[20], struct tree_entry *root,
 		die("Invalid path: %s", line);
 	if (*x)
 		die("Garbage after path: %s", line);
+	if (uq.len == 0) {
+		hashcpy(sha1, root->versions[1].sha1);
+		return;
+	}
 	tree_content_get(root, uq.buf, &leaf);
 	if (!leaf.versions[1].mode)
-		die("Path %s not in branch", uq.buf);
+		die("Path %s not in tree", uq.buf);
 	hashcpy(sha1, leaf.versions[1].sha1);
 }
 
-- 
1.7.3.1