bug#30994: bug#45857: 28.0.50; Not possible to set package-user-dir in early-init.el

[Stefan Monnier]

> Maybe some time in the future this need will re-appear at which point we
> may want to introduce some fancier system to control which var is
> initialized when, but I think for now the patch below is
> a better solution.

Pushed,


        Stefan

>
>         Stefan
>
>
> 2021-01-15  Stefan Monnier  <monnier@iro.umontreal.ca>
>
>     * lisp/startup.el: Fix bug#45857, bug#30994, and bug#45913.
>
>     (command-line): Don't re-evaluate the `custom-delayed-init-variables`
>     a second time after reading the `early-init.el` file.
>     (x-apply-session-resources): Set `blink-cursor-mode` rather than
>     `no-blinking-cursor`.
>
>     * lisp/frame.el (blink-cursor-start): Turn `blink-cursor-mode` off
>     if `blink-cursor-mode` was set to nil.
>     (blink-cursor-mode): Default to it being enabled regardless of
>     `window-system`.
>
>
> diff --git a/lisp/frame.el b/lisp/frame.el
> index e2d7f21a49..06aab269dd 100644
> --- a/lisp/frame.el
> +++ b/lisp/frame.el
> @@ -2552,13 +2552,15 @@ blink-cursor-start
>  This starts the timer `blink-cursor-timer', which makes the cursor blink
>  if appropriate.  It also arranges to cancel that timer when the next
>  command starts, by installing a pre-command hook."
> -  (when (null blink-cursor-timer)
> +  (cond
> +   ((null blink-cursor-mode) (blink-cursor-mode -1))
> +   ((null blink-cursor-timer)
>      ;; Set up the timer first, so that if this signals an error,
>      ;; blink-cursor-end is not added to pre-command-hook.
>      (setq blink-cursor-blinks-done 1)
>      (blink-cursor--start-timer)
>      (add-hook 'pre-command-hook #'blink-cursor-end)
> -    (internal-show-cursor nil nil)))
> +    (internal-show-cursor nil nil))))
>  
>  (defun blink-cursor-timer-function ()
>    "Timer function of timer `blink-cursor-timer'."
> @@ -2637,9 +2639,8 @@ blink-cursor-mode
>  terminals, cursor blinking is controlled by the terminal."
>    :init-value (not (or noninteractive
>                      no-blinking-cursor
> -                    (eq system-type 'ms-dos)
> -                    (not (display-blink-cursor-p))))
> -  :initialize 'custom-initialize-delay
> +                    (eq system-type 'ms-dos)))
> +  :initialize #'custom-initialize-delay
>    :group 'cursor
>    :global t
>    (blink-cursor-suspend)
> diff --git a/lisp/startup.el b/lisp/startup.el
> index 552802a38d..7011fbf458 100644
> --- a/lisp/startup.el
> +++ b/lisp/startup.el
> @@ -1172,6 +1172,7 @@ command-line
>          ;; are dependencies between them.
>          (nreverse custom-delayed-init-variables))
>    (mapc #'custom-reevaluate-setting custom-delayed-init-variables)
> +  (setq custom-delayed-init-variables nil)
>  
>    ;; Warn for invalid user name.
>    (when init-file-user
> @@ -1301,12 +1302,6 @@ command-line
>      (startup--setup-quote-display)
>      (setq internal--text-quoting-flag t))
>  
> -  ;; Re-evaluate again the predefined variables whose initial value
> -  ;; depends on the runtime context, in case some of them depend on
> -  ;; the window-system features.  Example: blink-cursor-mode.
> -  (mapc #'custom-reevaluate-setting custom-delayed-init-variables)
> -  (setq custom-delayed-init-variables nil)
> -
>    (normal-erase-is-backspace-setup-frame)
>  
>    ;; Register default TTY colors for the case the terminal hasn't a
> @@ -1487,13 +1482,13 @@ x-apply-session-resources
>  opens a graphical frame.
>  
>  This can set the values of `menu-bar-mode', `tool-bar-mode',
> -`tab-bar-mode', and `no-blinking-cursor', as well as the `cursor' face.
> +`tab-bar-mode', and `blink-cursor-mode', as well as the `cursor' face.
>  Changed settings will be marked as \"CHANGED outside of Customize\"."
>    (let ((no-vals  '("no" "off" "false" "0"))
>       (settings '(("menuBar" "MenuBar" menu-bar-mode nil)
>                   ("toolBar" "ToolBar" tool-bar-mode nil)
>                   ("scrollBar" "ScrollBar" scroll-bar-mode nil)
> -                 ("cursorBlink" "CursorBlink" no-blinking-cursor t))))
> +                 ("cursorBlink" "CursorBlink" blink-cursor-mode nil))))
>      (dolist (x settings)
>        (if (member (x-get-resource (nth 0 x) (nth 1 x)) no-vals)
>         (set (nth 2 x) (nth 3 x)))))