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68 lines
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68 lines
2.6 KiB
Markdown
[#]: collector: (lujun9972)
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[#]: translator: (lujun9972)
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[#]: reviewer: (wxy)
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[#]: publisher: (wxy)
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[#]: url: (https://linux.cn/article-10977-1.html)
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[#]: subject: (Get desktop notifications from Emacs shell commands ·)
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[#]: via: (https://blog.hoetzel.info/post/eshell-notifications/)
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[#]: author: (Jürgen Hötzel https://blog.hoetzel.info)
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让 Emacs shell 命令发送桌面通知
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======
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我总是使用 [Eshell][1] 来与操作系统进行交互，因为它与 Emacs 无缝整合、支持处理 (远程) [TRAMP][2] 文件，而且在 Windows 上也能工作得很好。
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启动 shell 命令后 (比如耗时严重的构建任务) 我经常会由于切换缓冲区而忘了追踪任务的运行状态。
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多亏了 Emacs 的 [钩子][3] 机制，你可以配置 Emacs 在某个外部命令完成后调用一个 elisp 函数。
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我使用 [John Wiegleys][4] 所编写的超棒的 [alert][5] 包来发送桌面通知：
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```
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(require 'alert)
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(defun eshell-command-alert (process status)
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"Send `alert' with severity based on STATUS when PROCESS finished."
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(let* ((cmd (process-command process))
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(buffer (process-buffer process))
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(msg (format "%s: %s" (mapconcat 'identity cmd " ") status)))
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(if (string-prefix-p "finished" status)
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(alert msg :buffer buffer :severity 'normal)
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(alert msg :buffer buffer :severity 'urgent))))
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(add-hook 'eshell-kill-hook #'eshell-command-alert)
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```
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[alert][5] 的规则可以用程序来设置。就我这个情况来看，我只需要当对应的缓冲区不可见时得到通知：
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```
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(alert-add-rule :status '(buried) ;only send alert when buffer not visible
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:mode 'eshell-mode
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:style 'notifications)
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```
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这甚至对于 [TRAMP][2] 也一样生效。下面这个截屏展示了失败的 `make` 命令产生的 Gnome 桌面通知。
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![../../img/eshell.png][6]
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--------------------------------------------------------------------------------
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via: https://blog.hoetzel.info/post/eshell-notifications/
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作者：[Jürgen Hötzel][a]
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选题：[lujun9972][b]
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译者：[lujun9972](https://github.com/lujun9972)
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校对：[wxy](https://github.com/wxy)
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本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创编译，[Linux中国](https://linux.cn/) 荣誉推出
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[a]: https://blog.hoetzel.info
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[b]: https://github.com/lujun9972
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[1]: https://www.gnu.org/software/emacs/manual/html_mono/eshell.html (Eshell)
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[2]: https://www.gnu.org/software/tramp/ (TRAMP)
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[3]: https://www.gnu.org/software/emacs/manual/html_node/emacs/Hooks.html (hooks)
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[4]: https://github.com/jwiegley (John Wiegleys)
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[5]: https://github.com/jwiegley/alert (alert)
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[6]: https://blog.hoetzel.info/img/eshell.png
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