emacs linum-mode 处理

一般来说为了方便是要开 global-linum-mode 的

但是这么一来，所有的临时 buffer 都会有行号，而且部分buffer 的行号会跳一下才显示。

想了个简单的解决方法：

;;; linum-mode
(setq linum-format
   (lambda (line)
  (propertize
   (format (let ((w (length (number-to-string
        (count-lines (point-min) (point-max))))))
      (concat "%" (number-to-string w) "d ")) line) 'face 'linum)))
(defun my-linum-on ()   ; linum should turn off in non-editor buffer
  (unless (or (minibufferp)
     (equal (string-match " \\*.*\\ *" (buffer-name (current-buffer))) 0))
    (linum-mode 1)))
(define-globalized-minor-mode my-global-linum-mode linum-mode my-linum-on)
(my-global-linum-mode 1)

这样在 *xxxx* buffer 下不启用 linum-mode