2016-09-23 10:32 GMT+02:00 Xi Shen <davidshen84@gmail.com>:

> Hi,
>
> On my Windows system, I have Cygwin setup, with Emacs as part of the
> Cygwin installation.
>

Cygwin Emacs is not a native Emacs (AFAIK). The difference is in the way it
groks pathnames
and other stuff like the default shell.

I also setup my Cygwin environment to use zsh. I started my Emacs from this
> zsh environment. I think that's where org inherited this setting.
>
> I think when org execute my block, it some how assumed that it should use
> the same shell at the remote end.
>

The portion of code I pointed out does not make sense to me and it may be
responsible for your problem.

Fabrice