在 Emacs ruby​​ 模式下使用制表符缩进而不是空格

我一直在尝试配置 Emacs，以便在缩进 Ruby 代码时插入一个“制表符”而不是一系列“空格”。

到目前为止，我已经尝试设置 varruby-indent-tabs-mode to t这样，根据文档，它将“如果非零，则在 ruby​​ 模式下插入选项卡”。但到目前为止，还没有骰子。

我也尝试过通过自定义它Easy customisation，将以下内容插入到我的init.el:

(custom-set-variables
 ;; custom-set-variables was added by Custom.
 ;; If you edit it by hand, you could mess it up, so be careful.
 ;; Your init file should contain only one such instance.
 ;; If there is more than one, they won't work right.
 '(ruby-indent-tabs-mode t))
(custom-set-faces
 ;; custom-set-faces was added by Custom.
 ;; If you edit it by hand, you could mess it up, so be careful.
 ;; Your init file should contain only one such instance.
 ;; If there is more than one, they won't work right.
 )

And after inspecting the variable via C-h v, it reports the variable is set to t, but pressing TAB keeps on inserting spaces.

我什至尝试编辑.el文件为 ruby​​-mode 并重新编译它没有效果。

如有帮助，将不胜感激。

- - - 编辑 - - -

Here's the minor modes reported active via C-h m:

启用的次要模式：缩写自动完成自动合成
自动压缩 自动加密 文件名 影子 字体锁定
全局自动完成全局字体锁定 Inf-Ruby 行号菜单栏
展会-Smartparens 展会-Smartparens-Global Smartparens
Smartparens-全球瞬态标记

The init.el文件当前有：

(require 'cask "/Users/snowingheart/.cask/cask.el")
(cask-initialize)
(require 'pallet)

(add-to-list 'load-path "~/elisp")
(load "php-mode")
(add-to-list 'auto-mode-alist
             '("\\.php[34]?\\'\\|\\.phtml\\'" . php-mode))

(global-set-key (kbd "C-x <up>") 'windmove-up)
(global-set-key (kbd "C-x <down>") 'windmove-down)
(global-set-key (kbd "C-x <right>") 'windmove-right)
(global-set-key (kbd "C-x <left>") 'windmove-left)

(require 'package)
(add-to-list 'package-archives
    '("marmalade" .
      "http://marmalade-repo.org/packages/"))
(package-initialize)

(global-set-key (kbd "C-x >") 'mc/mark-next-like-this)
(global-set-key (kbd "C-x <") 'mc/mark-previous-like-this)
(global-set-key (kbd "C-c C-<") 'mc/mark-all-like-this)
(global-set-key (kbd "C-S-c C-S-c") 'mc/edit-lines)

(require 'smartparens-config)
(require 'smartparens-ruby)
(require 'smartparens-erb)
(smartparens-global-mode)
(show-smartparens-global-mode t)

(sp-with-modes '(rhtml-mode)
               (sp-local-pair "<%=" "%>")
               (sp-local-pair "<%-" "%>"))
(require 'auto-complete-config)
(add-to-list 'ac-dictionary-directories
             "~/.emacs.d/.cask/24.3.50.1/elpa/auto-complete-20130724.1750/dict")
(ac-config-default)
(setq ac-ignore-case nil)
(add-to-list 'ac-modes 'enh-ruby-mode)
(add-to-list 'ac-modes 'web-mode)

(custom-set-variables
 ;; custom-set-variables was added by Custom.
 ;; If you edit it by hand, you could mess it up, so be careful.
 ;; Your init file should contain only one such instance.
 ;; If there is more than one, they won't work right.
 '(indent-tabs-mode t)
 '(ruby-indent-tabs-mode t))
(custom-set-faces
 ;; custom-set-faces was added by Custom.
 ;; If you edit it by hand, you could mess it up, so be careful.
 ;; Your init file should contain only one such instance.
 ;; If there is more than one, they won't work right.
 )

(setq-default indent-tabs-mode t)
(setq enh-ruby-indent-tabs-mode t)

(smart-tabs-insinuate 'ruby)
(smart-tabs-advice ruby-indent-line ruby-indent-level)
(setq ruby-indent-tabs-mode t)

尝试将以下内容添加到您的init.el（在您已有的自定义项下方）：

(setq-default indent-tabs-mode t)

从文档中indent-tabs-mode:

如果不为零，缩进可以插入制表符。

我不使用ruby-mode所以我不知道之间可能存在的相互作用indent-tabs-mode and ruby-indent-tabs-mode。设置可能就足够了indent-tabs-mode to t（并删除您所做的自定义ruby-indent-tabs-mode）。但是，当您将上面的代码片段添加到配置中时，Emacs 的默认行为将是插入制表符以进行缩进。

EDIT

可以看出here https://github.com/zenspider/enhanced-ruby-mode/blob/master/enh-ruby-mode.el#L76, enh-ruby-mode https://github.com/zenspider/enhanced-ruby-mode定义了一个名为的可定制变量enh-ruby-indent-tabs-mode默认值为nil. Later on https://github.com/zenspider/enhanced-ruby-mode/blob/master/enh-ruby-mode.el#L472该变量的值用于覆盖indent-tabs-mode，这就是为什么设置indent-tabs-mode to t对缓冲区没有影响enh-ruby-mode已启用。

所以除非你启用除此之外的任何其他模式ruby-mode and enh-ruby-mode这可能会修改indent-tabs-mode变量，添加

(setq enh-ruby-indent-tabs-mode t)

to your init.el应该可以解决你的问题。

另一个编辑（工作解决方案）

（学分：这个答案 https://stackoverflow.com/a/21788651/1199226让我走上正轨。）

Using

• Emacs 24.3.1

• ruby-mode版本1.2（内置）

• enh-ruby-mode version 20140406.252 (installed via M-x package-install ...)

我可以通过将以下内容添加到否则完全是空的 init.el file:

(package-initialize)

(setq-default tab-width 2)
(setq enh-ruby-indent-tabs-mode t)
(defvaralias 'enh-ruby-indent-level 'tab-width)
(defvaralias 'enh-ruby-hanging-indent-level 'tab-width)

该解决方案适用于 Emacs 的 GUI 和控制台版本。它可能会与您的其他自定义设置很好地集成，但您will需要删除custom-set-variables部分及其下面的所有内容来自您的版本init.el你在上面发帖了。

Note also that if you do come across a situation in which Emacs inserts a space instead of a tab you can always delete it and force insertion of a tab by quoting it https://www.gnu.org/software/emacs/manual/html_node/emacs/Inserting-Text.html via C-q TAB.

包起来

原来有一个bug https://github.com/zenspider/enhanced-ruby-mode/issues/42 in enh-ruby-mode这会导致缩进失败从第二层开始的块 when enh-ruby-indent-tabs-mode被设定为t。作者/维护者enh-ruby-mode没有修复它的计划，但错误报告中包含一个据称可以修复该问题的补丁。