Modify parameters on all frames

[Ehud Karni]

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I suggest to add a function to frame.el to change parameters on all
existing and future frames:

(defun modify-all-frames-parameters (alist)
  "modify all current and future frames parameters by changing 
`initial-frame-alist' and `default-frame-alist' and calling 
`modify-frame-parameters' on all existing frames with ALIST.
See help of `modify-frame-parameters' for more information."
  (let ((cframesc (cdr (current-frame-configuration)))
        frames ix fcount   ;; frames - list, index, count
        key val)           ;; key and value for aput
    (while cframesc
      (setq frames (append (list (car (car cframesc))) frames))
      (setq cframesc (cdr cframesc)))
    (setq fcount (length frames))
    (while alist
      (setq val (car alist))
      (setq key (car val))
      (setq val (cdr val))
      (message "key=%s, val=%s" key val)
      (aput 'initial-frame-alist key val) ;; If before initial frame
      (aput 'default-frame-alist key val) ;; for next frames
      (setq ix 0)
      (while (< ix fcount)
        (modify-frame-parameters (nth ix frames) (list (cons key val)))
        (setq ix (1+ ix)))
      (setq alist (cdr alist)))))


Ehud.

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