Re: [PATCH v2 2/2] mv: check for missing destination directory before renaming

[Junio C Hamano <gitster@pobox.com>]

Lucas Zamboni Orioli <lucaszam0@gmail.com> writes:

>> lstat() can succeed and 'dir_st' may indicate something other than a
>> directory (for example, a symbolic link or a regular file).
>> Alternatively, it can fail with ENOTDIR when, for example, 'dst_dir'
>> is 'a/b/c' and 'a/b' is a file rather than a directory.
>>
>> Both cases will cause 'git mv' into a path assumed to be a directory
>> to fail.  Shouldn't we handle these conditions as well?
>
> Yes, agreed, both should be handled. For v3 I switched from lstat()
> to stat() so that the check follows symlinks the same way rename()
> does, and I handle the non-directory cases:

Generally, a symbolic link in a Git-managed working tree should not
be followed.  Following a symbolic link would mean that 'git mv x y'
could move 'x' outside the working tree if 'y' is a tracked symbolic
link pointing to a directory outside the working tree.  'git apply',
for example, avoids being fooled by a symbolic link for the same
reason.

I doubt that using stat() instead of lstat() is the right approach.
Doing so essentially amounts to ignoring the presence of symbolic
links.