如题,我想要导出 markdown 到 ~/org-mode/markdown/
导出 html 到 ~/org-mode/html/
而源文件目录是在~/org-mode/org/
(defun org-md-export-to-markdown (&optional async subtreep visible-only)
"Export current buffer to a Markdown file.
If narrowing is active in the current buffer, only export its
narrowed part.
If a region is active, export that region.
A non-nil optional argument ASYNC means the process should happen
asynchronously. The resulting file should be accessible through
the `org-export-stack' interface.
When optional argument SUBTREEP is non-nil, export the sub-tree
at point, extracting information from the headline properties
first.
When optional argument VISIBLE-ONLY is non-nil, don't export
contents of hidden elements.
Return output file's name."
(interactive)
(let ((outfile (org-export-output-file-name ".md" subtreep)))
(org-export-to-file 'md outfile async subtreep visible-only)))
这个函数该怎么改?