emacs - Emacs：从进程接收输出的传统方式是什么？

Question

我的目标是从 Emacs 中的进程中获取输出。

例如，给了我一个可以发送 python 代码M-x run-python的 python shell 。*Python*如果我发送print "hello world"到*Python*，我希望 Emacs 能够在执行完成后知道结果并在 mini-buffer 中回显它。

是否可以添加类似回调的东西？

Answer 1

感谢@lawlist 的评论，我通过创建以下过滤器函数并将其分配给进程（*MozRepl*在我的情况下）解决了我的问题(set-process-filter (get-buffer-process "*MozRepl*") 'moz-controller-repl-filter)

(defun moz-controller-repl-filter (proc string)
  "Filter function of *MozRepl*.

It gets the useful output of *MozRepl*, store it in `moz-controller-repl-output` and `kill-ring`"
  (when (buffer-live-p (process-buffer proc))
    (unless (string= string "repl> ")   ; ignore empty output (page up, page down, etc)
      (setq moz-controller-repl-output
            (replace-regexp-in-string "\"\\(.+\\)\"\nrepl> " "\\1" string))
      (kill-new moz-controller-repl-output) ; append to kill-ring
      (message moz-controller-repl-output) ; show the copied content in echo area
      )
    (with-current-buffer (process-buffer proc)
      (let ((moving (= (point) (process-mark proc))))
        (save-excursion
          ;; Insert the text, advancing the process marker.
          (goto-char (process-mark proc))
          (insert string)
          (set-marker (process-mark proc) (point)))
        (if moving (goto-char (process-mark proc)))))))