* frame.el: Clean up initialization code.
(initial-frame-alist): Doc fix. (minibuffer-frame-alist): New default value, with a reasonable height. (filtered-frame-list, minibuffer-frame-list): New functions. (frame-initialize): Use minibuffer-frame-list, instead of writing it out. (frame-notice-user-settings): Thoroughly rearranged. Notice changes to default-frame-alist as well as initial-frame-alist. Properly handle requests to make the initial frame into a minibufferless or minibuffer-only frame. Create a minibuffer-only frame if the initial frame should lack a minibuffer and there are no other minibuffer frames created by the user's initialization file. Fix any frames using the initial frame as a surrogate minibuffer frame. Restore the current buffer after creating and deleting all these frames. * frame.el (set-default-font, set-frame-background, set-frame-foreground, set-cursor-color, set-pointer-color, set-auto-raise, set-auto-lower, set-vertical-bar, set-horizontal-bar): Give these docstrings. (set-auto-raise, set-auto-lower, set-vertical-bar, set-horizontal-bar): Make these toggle or look at the prefix argument, like minor modes. * frame.el (set-vertical-bar): Use the proper parameter symbol. (set-horizontal-bar): Signal an error indicating that horizontal scrollbars are not implemented.
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