如何在emacs中设置.h和.cpp文件中的列宽？ [英] How to set a column width in .h and .cpp files in emacs?

问题描述

我想在emacs中的.h和.cpp文件的text-width为80列。
我试过的是以下，

I want to have text-width to 80 columns for .h and .cpp files in emacs. What I tried is following,

Mx自动填充模式
Cx f

但以上解决方案无效。

But above solution is not working.

此外，我还尝试了 http：/ /www.emacswiki.org/emacs/CPlusPlusMode 。如下。

Also I tried the solution present at http://www.emacswiki.org/emacs/CPlusPlusMode. It is as below.

; style I want to use in c++ mode                                                                                                                                                                                 
(c-add-style "my-style"
  '("stroustrup"
      (indent-tabs-mode . nil)        ; use spaces rather than tabs                                                                                                                                          
      (c-basic-offset . 4)            ; indent by four spaces                                                                                                                                                
      (c-offsets-alist . ((inline-open . 0)  ; custom indentation rules                                                                                                                                      
      (brace-list-open . 0)
      (statement-case-open . +)))))

(defun my-c++-mode-hook ()
(c-set-style "my-style")        ; use my-style defined above                                                                                                                                                   
(auto-fill-mode)
(c-toggle-auto-hungry-state 1))
(add-hook 'c++-mode-hook 'my-c++-mode-hook)**

尽管我并没有完全了解emacswiki提供的解决方案。
欣赏这方面的任何帮助。

Though, I did not completely understand the solution provided at emacswiki. Appreciate any help in this regard.

谢谢。

推荐答案

您只需要在这些模式中设置 fill-column ，您可以通过定义一个函数来将其添加到相关模式中（您可以也可以作为一个 lambda ，但是通常很好的做法是把它放在一个命名的函数中，所以你可以稍后从钩子中删除它。默认情况下， *。h 文件出现在 c-mode 中，而 *。cpp 文件默认出现在 c ++ - mode 中。首先，定义一个函数：

You need to set fill-column only in those modes, which you can do by defining a function to do so and adding that hook to the relevant modes (you could also do it as a lambda, but it's usually good practice to put it in a named function so you can remove it from the hook later if you need to). *.h files come up in c-mode by default, while *.cpp files come up in c++-mode by default. First, define a function:

(defun my-c-hook ()
  (setq fill-column 80))

然后，将该函数添加到相关模式钩子中：

Then, add that function to the relevant mode hooks:

(add-hook 'c-mode-hook 'my-c-hook)
(add-hook 'c++-mode-hook 'my-c-hook)

您可以使您的功能如您所愿，例如，放入其他您原来的项目：

You can make your function as rich as you like, eg, by putting in the other items you had originally:

(defun my-c-hook ()
  (c-set-style "my-style")
  (auto-fill-mode)
  (c-toggle-auto-hungry-state 1)
  (setq fill-column 80))

这篇关于如何在emacs中设置.h和.cpp文件中的列宽？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！