Re: [PATCH v3 3/3] mingw: replace isatty() hack

> +	/*
> +	 * Use stock dup2() to re-bind fd to the new handle.  Note that
> +	 * this will implicitly close(1) and close both fd=1 and the
> +	 * originally associated handle.  It will open a new fd=1 and
> +	 * call DuplicateHandle() on the handle associated with new_fd.
> +	 * It is because of this implicit close() that we created the
> +	 * copy of the original.
> +	 *
> +	 * Note that we need to update the cached console handle to the
> +	 * duplicated one because the dup2() call will implicitly close
> +	 * the original one.
> +	 *
> +	 * Note that dup2() when given target := {0,1,2} will also
> +	 * call SetStdHandle(), so we don't need to worry about that.
> +	 */
> +	if (console == handle)
> +		console = duplicate;
> +	dup2(new_fd, fd);