Enhance garbage collection

- Enhance early-init garbage collection optimization
  (Add support for: gc-cons-percentage)
- Make minimal-emacs-load-user-init display messages when
  init-file-debug is non-nil
- Update README.md

README.md

@@ -9,7 +9,7 @@ The **minimal-emacs.d** project is a lightweight and optimized Emacs base (`init
 
 Building the *minimal-emacs.d* `init.el` and `early-init.el` was the result of **extensive research and testing** to fine-tune the best parameters and optimizations for an Emacs configuration. *(More information about the *minimal-emacs.d* features can be found here: [Features](#features).)*
 
-If this enhances your workflow, please show your support by **⭐ starring minimal-emacs.d GitHub** to help more users discover its benefits.
+If this enhances your workflow, please show your support by **⭐ starring minimal-emacs.d GitHub** to help more Emacs users discover its benefits.
 
 <p align="center">
 <img src="https://jamescherti.com/misc/minimal-emacs.d.png" width="50%" />

early-init.el

@@ -24,10 +24,14 @@
 
 ;;; Internal variables
 
-(defvar minimal-emacs--backup-gc-cons-threshold gc-cons-threshold
-  "Backup of the original value of `gc-cons-threshold' before startup.")
+;; Backup of `gc-cons-threshold' and `gc-cons-percentage' before startup.
+(defvar minimal-emacs--backup-gc-cons-threshold gc-cons-threshold)
+(defvar minimal-emacs--backup-gc-cons-percentage gc-cons-percentage)
 
-(setq gc-cons-threshold most-positive-fixnum)
+;; Temporarily raise the garbage collection threshold to its maximum value.
+;; It will be restored later to controlled values.
+(setq gc-cons-threshold (- most-positive-fixnum 1))
+(setq gc-cons-percentage 1.0)
 
 ;;; Variables
 
@@ -55,6 +59,10 @@ stored in `minimal-emacs-gc-cons-threshold'.")
   "Value to which `gc-cons-threshold' is set after Emacs startup.
 Ignored if `minimal-emacs-optimize-startup-gc' is nil.")
 
+(defvar minimal-emacs-gc-cons-percentage gc-cons-percentage
+  "Value to which `gc-cons-percentage' is set after Emacs startup.
+Ignored if `minimal-emacs-optimize-startup-gc' is nil.")
+
 (defvar minimal-emacs-gc-cons-threshold-restore-delay nil
   "Number of seconds to wait before restoring `gc-cons-threshold'.")
 
@@ -157,23 +165,26 @@ pre-early-init.el, and post-early-init.el.")
 
 (setq garbage-collection-messages minimal-emacs-debug)
 
-(defun minimal-emacs--restore-gc-cons-threshold ()
-  "Restore `gc-cons-threshold' to `minimal-emacs-gc-cons-threshold'."
+(defun minimal-emacs--restore-gc-values ()
+  "Restore garbage collection values to minimal-emacs.d values."
+  (setq gc-cons-threshold minimal-emacs-gc-cons-threshold)
+  (setq gc-cons-percentage minimal-emacs-gc-cons-percentage))
+
+(defun minimal-emacs--restore-gc ()
+  "Restore garbage collection settings."
   (if (bound-and-true-p minimal-emacs-gc-cons-threshold-restore-delay)
       ;; Defer garbage collection during initialization to avoid 2 collections.
-      (run-at-time
-       minimal-emacs-gc-cons-threshold-restore-delay nil
-       (lambda () (setq gc-cons-threshold minimal-emacs-gc-cons-threshold)))
-    (setq gc-cons-threshold minimal-emacs-gc-cons-threshold)))
+      (run-at-time minimal-emacs-gc-cons-threshold-restore-delay nil
+                   #'minimal-emacs--restore-gc-values)
+    (minimal-emacs--restore-gc-values)))
 
 (if minimal-emacs-optimize-startup-gc
     ;; `gc-cons-threshold' is managed by minimal-emacs.d
-    (add-hook 'emacs-startup-hook #'minimal-emacs--restore-gc-cons-threshold 105)
+    (add-hook 'emacs-startup-hook #'minimal-emacs--restore-gc 105)
   ;; gc-cons-threshold is not managed by minimal-emacs.d.
-  ;; If it is equal to `most-positive-fixnum', this indicates that the user has
-  ;; not overridden the value in their `pre-early-init.el' configuration.
-  (when (= gc-cons-threshold most-positive-fixnum)
-    (setq gc-cons-threshold minimal-emacs--backup-gc-cons-threshold)))
+  (when (= gc-cons-threshold (- most-positive-fixnum 1))
+    (setq gc-cons-threshold minimal-emacs--backup-gc-cons-threshold)
+    (setq gc-cons-percentage minimal-emacs--backup-gc-cons-percentage)))
 
 ;;; Native compilation and Byte compilation