这个问题都已经准备放弃中文文件名，以后统一全部用英文的，但折腾一番还是解决了，发出来给道友们参考下，win7、emacs26.3
现在可以用，但有种那天可能就不能用了的感觉，如flycheck升级
(defun flycheck-temp-file-system (filename)
"Create a temporary file named after FILENAME.
If FILENAME is non-nil, this function creates a temporary
directory with `flycheck-temp-dir-system', and creates a file
with the same name as FILENAME in this directory.
Otherwise this function creates a temporary file with
`flycheck-temp-prefix' and a random suffix. The path of the file
is added to `flycheck-temporaries'.
Return the path of the file."
(let ((tempfile (convert-standard-filename
(if filename
(expand-file-name (file-name-nondirectory filename)
(flycheck-temp-dir-system))
(make-temp-file flycheck-temp-prefix)))))
(push (url-encode-url tempfile);当前缓冲区文件名?
flycheck-temporaries)
;;临时文件名,如果只改这里返回的错误只在flycheck-error-list可见 当前buf见不到
(url-encode-url tempfile)
))
