Fix read-tree --prefix=dir/.

The existing code is not wrong per-se, but it started scanning the index
from a location that does not match the tree being read, and wasted
cycles.

Signed-off-by: Junio C Hamano <junkio@cox.net>

diff --git a/builtin-read-tree.c b/builtin-read-tree.c
index 793eae0..5fb84b8 100644 (file)
--- a/builtin-read-tree.c
+++ b/builtin-read-tree.c
@@ -228,6 +228,7 @@ int cmd_read_tree(int argc, const char **argv, const char *unused_prefix)
                if (0 <= pos)
                        die("file '%.*s' already exists.",
                                        pfxlen-1, opts.prefix);
+               opts.pos = -1 - pos;
        }
 
        if (opts.merge) {