如何配置emacs以与其他现代编辑器相同的方式工作,其中按 Alt + D 或 Alt + 退格删除相邻的空格还是单个单词?默认情况下,emacs始终删除一个单词。
答案 0 :(得分:10)
通过使用Emacs的一段时间我认为尽管我可以改变基本功能,但它在效率方面通常不会带来太多回报。事实上,在我做了几次之后,我后悔并解开它。这一直不是真的,有些键绑定真的很不舒服或很少有用,但我不认为这就是kill word如何工作的情况。事实上,我刚才意识到:我确实在Eclipse中尝试过键绑定,但是我一直在使用它与Emacs风格的kebindings永远...
无论如何,正如我刚才所说,在你“修复”这个功能之前,确保它真的坏了:)我从来没有发现自己需要你描述的那种功能,也许这就是原因:
M-SPC 将单词之间的空间缩小到一个空格。如果点在两个单词之间并且我想删除分隔单词的额外空格,我会使用这个。
M - \ 删除所有水平空间。这将加入由空格分隔的两个单词。
如果你想要实现的是某种“稀疏”格式化,例如:
int foo = 42;
unsigned int bar = 43;
那么 M-x align-regexp
就可以了。
我从来没有遇到过a)长时间的whitepsace运行,除非它是缩进,如果是缩进, TAB 通常会更好地处理它。 b)即使有很长时间的空白运行,我也很少一次将这个点移动一个字符,所以我很难想到我会发现这个点被几个空格包围的情况。我想到了艺术家模式或点图等事情,但在代码编辑过程中不会发生这种情况。
最后,如果您正在尝试,那么,让我们说只需编辑一个任意文本文件,并且您想要在单词之间添加或删除水平空格......再次, Mx { {1}}要做到这一点,或者你可以使用对矩形进行操作的命令,如果那些是当时的几行。好吧,Emacs甚至会识别临时标签,并会尝试对齐文本,例如匹配点之前的最后一行,当你点击 TAB 时。
最后,如果由于某些原因我无法理解:)我真的需要做你所描述的,然后我会这样做: k M - \ BACKSPACE (它可以是任何其他键而不是“k” - 它恰好在你的手指下,所以输入速度很快:)或者,如果我懒得思考它: kbd> M-SPC Mf Mb Cw - 可能听起来很多,但这些是你将要使用的命令当时的时间,所以它在速度方面不会妨碍你。
答案 1 :(得分:8)
(defvar movement-syntax-table
(let ((st (make-syntax-table)))
;; ` default = punctuation
;; ' default = punctuation
;; , default = punctuation
;; ; default = punctuation
(modify-syntax-entry ?{ "." st) ;; { = punctuation
(modify-syntax-entry ?} "." st) ;; } = punctuation
(modify-syntax-entry ?\" "." st) ;; " = punctuation
(modify-syntax-entry ?\\ "_" st) ;; \ = symbol
(modify-syntax-entry ?\$ "_" st) ;; $ = symbol
(modify-syntax-entry ?\% "_" st) ;; % = symbol
st)
"Syntax table used while executing custom movement functions.")
(defun delete-word-or-whitespace (&optional arg)
"http://stackoverflow.com/a/20456861/2112489"
(interactive "P")
(with-syntax-table movement-syntax-table
(let* (
beg
end
(word-regexp "\\sw")
(punctuation-regexp "\\s.")
(symbol-regexp "\\s_\\|\\s(\\|\\s)"))
(cond
;; Condition # 1
;; right of cursor = word or punctuation or symbol
((or
(save-excursion (< 0 (skip-syntax-forward "w")))
(save-excursion (< 0 (skip-syntax-forward ".")))
(save-excursion (< 0 (skip-syntax-forward "_()"))))
;; Condition #1 -- Step 1 of 2
(cond
;; right of cursor = word
((save-excursion (< 0 (skip-syntax-forward "w")))
(skip-syntax-forward "w")
(setq end (point))
(while (looking-back word-regexp)
(backward-char))
(setq beg (point))
(delete-region beg end))
;; right of cursor = punctuation
((save-excursion (< 0 (skip-syntax-forward ".")))
(skip-syntax-forward ".")
(setq end (point))
(while (looking-back punctuation-regexp)
(backward-char))
(setq beg (point))
(delete-region beg end))
;; right of cursor = symbol
((save-excursion (< 0 (skip-syntax-forward "_()")))
(skip-syntax-forward "_()")
(setq end (point))
(while (looking-back symbol-regexp)
(backward-char))
(setq beg (point))
(delete-region beg end)))
;; Condition #1 -- Step 2 of 2
(cond
;; right of cursor = whitespace
;; left of cursor = not word / not symbol / not punctuation = whitespace or bol
((and
(save-excursion (< 0 (skip-chars-forward "\s\t")))
(not (save-excursion (> 0 (skip-syntax-backward "w"))))
(not (save-excursion (> 0 (skip-syntax-backward "."))))
(not (save-excursion (> 0 (skip-syntax-backward "_()")))))
(setq beg (point))
(skip-chars-forward "\s\t")
(setq end (point))
(delete-region beg end))
;; right of cursor = whitespace
;; left of cursor = word or symbol or punctuation
((and
(save-excursion (< 0 (skip-chars-forward "\s\t")))
(or
(save-excursion (> 0 (skip-syntax-backward "w")))
(save-excursion (> 0 (skip-syntax-backward ".")))
(save-excursion (> 0 (skip-syntax-backward "_()")))))
(fixup-whitespace))))
;; Condition # 2
;; right of cursor = whitespace
;; left of cursor = bol | left of cursor = whitespace | right of cursor = whitespace + eol
((and
(save-excursion (< 0 (skip-chars-forward "\s\t")))
(or
(bolp)
(save-excursion (> 0 (skip-chars-backward "\s\t")))
(save-excursion (< 0 (skip-chars-forward "\s\t")) (eolp))))
(setq beg (point))
(skip-chars-forward "\s\t")
(setq end (point))
(delete-region beg end))
;; Condition # 3
;; right of cursor = whitespace or eol
;; left of cursor = word or symbol or punctuation
;; not bol + word or symbol or punctuation
;; not bol + whitespace + word or symbol or punctuation
((and
(or (save-excursion (< 0 (skip-chars-forward "\s\t"))) (eolp))
(or
(save-excursion (> 0 (skip-syntax-backward "w")))
(save-excursion (> 0 (skip-syntax-backward ".")))
(save-excursion (> 0 (skip-syntax-backward "_()"))))
(not (save-excursion (> 0 (skip-syntax-backward "w")) (bolp)))
(not (save-excursion (> 0 (skip-syntax-backward ".")) (bolp)))
(not (save-excursion (> 0 (skip-syntax-backward "_()")) (bolp)))
(not (save-excursion (and (> 0 (skip-syntax-backward "w")) (> 0 (skip-chars-backward "\s\t")) (bolp))))
(not (save-excursion (and (> 0 (skip-syntax-backward ".")) (> 0 (skip-chars-backward "\s\t")) (bolp))))
(not (save-excursion (and (> 0 (skip-syntax-backward "_()")) (> 0 (skip-chars-backward "\s\t")) (bolp)))))
(setq end (point))
(cond
((save-excursion (> 0 (skip-syntax-backward "w")))
(while (looking-back word-regexp)
(backward-char)))
((save-excursion (> 0 (skip-syntax-backward ".")))
(while (looking-back punctuation-regexp)
(backward-char)))
((save-excursion (> 0 (skip-syntax-backward "_()")))
(while (looking-back symbol-regexp)
(backward-char))))
(setq beg (point))
(when (save-excursion (> 0 (skip-chars-backward "\s\t")))
(skip-chars-backward "\s\t")
(setq beg (point)))
(delete-region beg end)
(skip-chars-forward "\s\t"))
;; Condition # 4
;; not bol = eol
;; left of cursor = bol + word or symbol or punctuation | bol + whitespace + word or symbol or punctuation
((and
(not (and (bolp) (eolp)))
(or
(save-excursion (> 0 (skip-syntax-backward "w")) (bolp))
(save-excursion (> 0 (skip-syntax-backward ".")) (bolp))
(save-excursion (> 0 (skip-syntax-backward "_()")) (bolp))
(save-excursion (and (> 0 (skip-syntax-backward "w")) (> 0 (skip-chars-backward "\s\t")) (bolp)))
(save-excursion (and (> 0 (skip-syntax-backward ".")) (> 0 (skip-chars-backward "\s\t")) (bolp)))
(save-excursion (and (> 0 (skip-syntax-backward "_()")) (> 0 (skip-chars-backward "\s\t")) (bolp)))))
(skip-chars-forward "\s\t")
(setq end (point))
(setq beg (point-at-bol))
(delete-region beg end))
;; Condition # 5
;; point = eol
;; not an empty line
;; whitespace to the left of eol
((and
(not (and (bolp) (eolp)))
(eolp)
(save-excursion (> 0 (skip-chars-backward "\s\t"))))
(setq end (point))
(skip-chars-backward "\s\t")
(setq beg (point))
(delete-region beg end))
;; Condition # 6
;; point = not eob
;; point = bolp and eolp
;; universal argument = C-u = '(4)
((and
(not (eobp))
(and (bolp) (eolp))
(equal arg '(4)))
(delete-forward-char 1))) )))
答案 2 :(得分:4)
之前很可能已经解决了这个问题,但我们可以编写自己的代码,而不是寻找代码。非常有趣!
我就是这样做的,希望有所帮助。
(defun kill-whitespace-or-word ()
(interactive)
(if (looking-at "[ \t\n]")
(let ((p (point)))
(re-search-forward "[^ \t\n]" nil :no-error)
(backward-char)
(kill-region p (point)))
(kill-word 1)))
然后将其绑定到密钥:
(global-set-key (kbd "M-d") 'kill-whitespace-or-word)
答案 3 :(得分:1)
如果您使用的是基于CC模式的缓冲区,则可能正在寻找Hungry Delete Mode
次要模式。
在几个地方尝试 Cc DEL 和 Cc DELETE ,以了解差异。
如果您喜欢它的工作方式,您可以通过执行M-x c-toggle-hungry-state
切换饥饿删除以适用于标准键,或者只是将饥饿的删除功能重新绑定到您的首选绑定。
如果你仍然认为你需要搭载一把钥匙来做前锋杀词或空白,那么你可以做类似于c-hungry-delete-forward
的事情,或者暂时重新绑定c-delete-function
并称之为。
(defun c-hungry-delete-forward-word ()
"Delete the following word or all following whitespace
up to the next non-whitespace character.
See also \\[c-hungry-delete-backwards]."
(interactive)
(let ((c-delete-function (function kill-word)))
(c-hungry-delete-forward)))
查看信息页面(ccmode) Hungry WS Deletion
了解更多信息。