在 emacs 中显示干燥的工作流程/用例？答案

【问题标题】：workflow/usecase for dired-do-redisplay in emacs?在 emacs 中显示干燥的工作流程/用例？
【发布时间】：2020-11-18 10:07:19
【问题描述】：

dired-do-redisplay 的用例是什么？我正在阅读 Emacs Dired 文档并尝试了解用例/工作流程。见Dired Documentation

【问题讨论】：

标签： emacs dired

【解决方案1】：

文档字符串 (C-h f) 明确了命令的用途，我认为：

,----
| `dired-do-redisplay` is an interactive autoloaded compiled Lisp function
| in `dired-aux.el`.
| 
| It is bound to l.
| 
| `(dired-do-redisplay &optional ARG TEST-FOR-SUBDIR)`
| 
| Redisplay all marked (or next `ARG`) files.
| If on a subdir line, redisplay that subdirectory.  In that case,
| a prefix arg lets you edit the `ls' switches used for the new listing.
| 
| Dired remembers switches specified with a prefix arg, so that reverting
| the buffer will not reset them.  However, using `dired-undo` to re-insert
| or delete subdirectories can bypass this machinery.  Hence, you sometimes
| may have to reset some subdirectory switches after a `dired-undo`.
| You can reset all subdirectory switches to the default using
| `M-x dired-reset-subdir-switches`.
| See Info node `(emacs)Subdir switches` for more details.
`----

例如，Dired 显示不会自动更新以反映 Emacs 之外的更改（除非您设置了自动恢复选项）。此命令实质上仅恢复某些文件或子目录列表的列表。对于子目录列表，它允许您提供不同的ls 开关，因此您可以使用这些指定的开关重新列出。

【讨论】：