如何安全地覆盖 emacs 中的缩进 Tab 键
我是 emacs 的新用户，并且我不太喜欢 emacs 模式处理缩进的方式，尤其是在混合模式（例如 ASP 和 perl）时。我编写了以下函数，以“经典”编辑器的方式缩进：
(defun classic-indent (width)
"Tab the current line or block the 'classic' way"
(save-excursion
(if (not (use-region-p)) (select-current-line))
(indent-rigidly (mark) (point) width)))
(defun indent-forward ()
"tab two space forward"
(interactive)
(classic-indent 2))
(defun indent-back ()
"tab two spaces back"
(interactive)
(classic-indent -2))
(defun select-current-line ()
"Select the current line"
(interactive)
(end-of-line) ; move to end of line
(set-mark (line-beginning-position)))
这里的想法是将 indent-back 绑定到 Mx 调用它们时，这些函数工作得很好，并且 indent-line-function 设置为：
(setq indent-line-function 'indent-forward)
并设置我的主要模式缩进函数为：
(setq cperl-indent-command 'indent-forward)
但两者都没有任何效果。我不确定我是否设置错误，或者这是否是正确的方法。
总而言之，如何使用 tab 键覆盖缩进而不破坏其他“tab”行为（例如自动完成）？
I'm a new user to emacs, and I don't particularly like the way emacs modes handle indentation, especially when mixing modes (say ASP and perl). I have written the following functions to indent things the way a "classic" editor would:
(defun classic-indent (width)
"Tab the current line or block the 'classic' way"
(save-excursion
(if (not (use-region-p)) (select-current-line))
(indent-rigidly (mark) (point) width)))
(defun indent-forward ()
"tab two space forward"
(interactive)
(classic-indent 2))
(defun indent-back ()
"tab two spaces back"
(interactive)
(classic-indent -2))
(defun select-current-line ()
"Select the current line"
(interactive)
(end-of-line) ; move to end of line
(set-mark (line-beginning-position)))
The idea here being to bind indent-back to <backtab> and indent-forward to <tab>. The functions work great when calling them with M-x, and the <backtab> binding works fine, but if I try to bind <tab> directly, it interfere's with all sorts of cool things like auto-completion. I tried setting indent-line-function with:
(setq indent-line-function 'indent-forward)
and setting my major modes indentation function with:
(setq cperl-indent-command 'indent-forward)
but neither has any effect. I'm not sure if I'm setting them wrong or if this is even the right approach.
to sum up, How can I override indentation with the tab key without clobbering other 'tab' behavior like auto-completion?
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Emacs wiki 有一个关于缩进和 TAB 的完整类别页面： http://www.emacswiki.org/emacs/CategoryIndentation 。请参阅有关为您提供各种 TAB DWIM（“智能”TAB）行为的库或片段的其他 wiki 页面。这里有几个：
Emacs wiki has a whole category page about indentation and TAB: http://www.emacswiki.org/emacs/CategoryIndentation. See that for other wiki pages about libraries or snippets that give you various kinds of TAB DWIM ("smart" TAB) behavior. Here are a couple:
当您加载缓冲区时，主模式默认值可能会覆盖您的设置。做这样的事情确保您的缩进行函数使用缓冲区本地并且它将起作用。
参考： https://www.emacswiki.org/emacs/BufferLocalVariable
It's likely the major-mode default is overriding your setting when you load a buffer. Do something like this ensure your indent-line-function is used buffer-local and it will work.
ref: https://www.emacswiki.org/emacs/BufferLocalVariable