Emacs - `bzr`的'start-process'不会将状态输出到缓冲区 [英] Emacs -- `start-process` for `bzr` does not output status to buffer

问题描述

在本机OSX Terminal.app中运行 bzr 时，我看到如下状态：

When running bzr in the native OSX Terminal.app, I see the status as follows:

32376kB     2kB/s / Build phase:Adding file contents 1282/3629

但是，当运行 start-process 时，我看不到没有状态输出到缓冲区。该过程正常运行，只有没有可见的输出，直到结束 - 两（2）行：

When running start-process, however, I see no status being output to the buffer. The process is functioning properly, just with no visible output until the end -- two (2) lines only:

Created new stacked branch referring to bzr://bzr.savannah.gnu.org/emacs/trunk/.

Process bzr-process finished

Emacs提供了另一个侦听功能这将通过 bzr 捕获上述状态输出，以便我可以看到进度？

Is there another listening function that Emacs offers that will capture the above-mentioned status output by bzr so that I can see the progress?

(start-process
  "bzr-process"
  "*bzr-output*"
  "/macports/bin/bzr"
  "branch"
  "--stacked"
  "bzr://bzr.savannah.gnu.org/emacs/trunk"
  "/Users/HOME/Desktop/emacs-trunk")

推荐答案

也许你可以得到bzr给你的即时状态通过以tty而不是通过管道运行进程来输出。为此，只需let-bind process-connection-type ，如下所示：

Maybe you can get bzr to give you the on-the-fly status output by running the process in a tty rather than through a pipe. For that, just let-bind process-connection-type as in:

(let ((process-connection-type t))
  (start-process ...))

但是IIRC这个值已经默认为t，所以也许这个问题在别的地方。也许bzr检查$ TERM以查看是否可以正确更新输出。所以也许你可以尝试

But IIRC this value already defaults to t, so maybe the problem is elsewhere. Maybe bzr checks the $TERM to see if it can correctly update the output. So maybe you can try

(let ((process-environment (cons "TERM=xterm" process-environment)))
  (start-process ...))

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