下面是一个代码片段，可以让你直接使用交互函数指定全局字体大小:

(defun set-font-size ()
    "Set the font size."
  (interactive)
  (set-face-attribute
   'default nil :height
   (string-to-number
    (read-string "Font size: " (number-to-string (face-attribute 'default :height nil))))))

按Shift和第一个鼠标按钮。您可以通过以下方式更改字体大小:此网站有更多详细信息。

这是另一个简单的解决方案。《24小时》也适用

(set-default-font "Monaco 14")

捷径:

`C-+` increases font size
`C--` Decreases font size

如果你喜欢控制台emacs (emacs -nw)，现代vterm实现(如gnome-terminal)往往有更好的字体支持。另外，如果您习惯了这一点，就可以使用tmux，这样即使没有X，也可以在远程服务器上使用完整的环境。

M-x自定义脸RET默认将允许您设置脸的默认脸，所有其他脸的基础上。在这里你可以设置字体大小。

这是我的。emacs中的内容。实际上，color-theme会设置基础，然后我的自定义面部设置会覆盖一些东西。定制的set-faces是由emacs的定制面机制编写的:

;; my colour theme is whateveryouwant :)
(require 'color-theme)
(color-theme-initialize)
(color-theme-whateveryouwant)

(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.
 '(default ((t (:stipple nil :background "white" :foreground "black" :inverse-video nil :box nil :strike-through nil :overline nil :underline nil :slant normal :weight normal :height 98 :width normal :foundry "unknown" :family "DejaVu Sans Mono"))))
 '(font-lock-comment-face ((t (:foreground "darkorange4"))))
 '(font-lock-function-name-face ((t (:foreground "navy"))))
 '(font-lock-keyword-face ((t (:foreground "red4"))))
 '(font-lock-type-face ((t (:foreground "black"))))
 '(linum ((t (:inherit shadow :background "gray95"))))
 '(mode-line ((t (nil nil nil nil :background "grey90" (:line-width -1 :color nil :style released-button) "black" :box nil :width condensed :foundry "unknown" :family "DejaVu Sans Mono")))))

这里有一个交互调整字体高度的选项，一次一点:

;; font sizes
(global-set-key (kbd "s-=")
                (lambda ()
                  (interactive)
                  (let ((old-face-attribute (face-attribute 'default :height)))
                    (set-face-attribute 'default nil :height (+ old-face-attribute 10)))))

(global-set-key (kbd "s--")
                (lambda ()
                  (interactive)
                  (let ((old-face-attribute (face-attribute 'default :height)))
                    (set-face-attribute 'default nil :height (- old-face-attribute 10)))))

当您想要调整所有缓冲区中的文本大小时，这是可取的。我不喜欢使用文本比例增加和文本比例减少的解决方案，因为排水沟中的行号之后会被切断。