如何为“for alist`”设置缓冲区-本地值和全局值

Question

是否可以同时设置face-remapping-alist的全局值和缓冲区本地值？

mode-line需要一个全局值才能有效地更改颜色。若要在小型缓冲区内更改default的背景和前景的颜色，需要一个本地值。设置全局值将取消缓冲区-本地值，而visa则取消缓冲区-本地值。

由于以下链接线程中讨论的问题，我试图避免使用set-face-attribute、set-face-background和set-face-foreground：使用face-remapping-alist的How to speed-up a custom mode-line face change function in Emacs避免了这些问题。

(defun my-modeline-face-function ()
  (cond
    ((minibufferp)
      (with-selected-window (minibuffer-window)
        (set (make-local-variable 'face-remapping-alist) '(
          (default :background "black" :foreground "yellow")
          (minibuffer-prompt :background "black" :foreground "cyan" :weight bold) 
          (mode-line :height 140 :foreground "gray70" :background "black" :box nil)))))
    (t
        (with-selected-window (minibuffer-window)
          (set (make-local-variable 'face-remapping-alist) '(
            (default :background "black" :foreground "grey50")
            (minibuffer-prompt :background "black" :foreground "white")
            (mode-line :height 140 :foreground "black" :background "gray70" :box nil)))) )))

编辑(2014年8月5日)：以下是基于@phils的有用答案的工作修订版：

(defun my-modeline-face-function ()
  (cond
    ((minibufferp)
      (with-selected-window (minibuffer-window)
        (setq-local face-remapping-alist '(
          (default :background "black" :foreground "yellow")
          (minibuffer-prompt :background "black" :foreground "cyan" :weight bold) )))
      (setq-default face-remapping-alist '(
        (mode-line :height 140 :foreground "gray70" :background "black" :box nil))))
    (t
        (with-selected-window (minibuffer-window)
          (setq-local face-remapping-alist '(
            (default :background "black" :foreground "grey50")
            (minibuffer-prompt :background "black" :foreground "white"))))
      (setq-default face-remapping-alist '(
        (mode-line :height 140 :foreground "black" :background "gray70" :box nil) )))))

Answer 1

是否可以同时设置全局值和缓冲区值.？

是：

(setq-local foo "local")
(setq-default foo "global")

设置全局值将取消缓冲区-本地值，而visa则取消缓冲区-本地值。

设置变量的默认值/全局值对任何缓冲区本地值都没有影响，所以我不确定这是什么意思？

类似地，设置缓冲区-局部值对全局值没有任何影响(当然，它会对大多数评估的全局值进行阴影)。您可以使用(default-value SYMBOL)获得全局值。