Add windows + linux settings

.emacs

@@ -36,17 +36,53 @@
 (use-package zenburn-theme
   :ensure t)
 
-;; Function to detect macOS system appearance (light or dark)
-(defun my/mac-get-system-appearance ()
-  "Return 'light or 'dark based on macOS system appearance."
+(defun my/get-system-appearance ()
+  (cond
+   ;; ---------------------------
+   ;; macOS
+   ;; ---------------------------
+   ((eq system-type 'darwin)
     (if (string= (shell-command-to-string "defaults read -g AppleInterfaceStyle 2>/dev/null") "Dark\n")
         'dark
       'light))
 
-;; Function to set theme based on system appearance
+   ;; ---------------------------
+   ;; Windows
+   ;; ---------------------------
+   ((eq system-type 'windows-nt)
+    ;; NOTE: For Windows 10/11, “AppsUseLightTheme” is under:
+    ;; HKCU\Software\Microsoft\Windows\CurrentVersion\Themes\Personalize
+    ;; Value of 1 => Light, 0 => Dark
+    (let ((output (shell-command-to-string
+                   "reg query \"HKCU\\Software\\Microsoft\\Windows\\CurrentVersion\\Themes\\Personalize\" /v AppsUseLightTheme 2>nul")))
+      (cond
+       ((string-match "0x1" output) 'light)
+       ((string-match "0x0" output) 'dark)
+       (t nil))))
+
+   ;; ---------------------------
+   ;; GNOME-based Linux
+   ;; ---------------------------
+   ((eq system-type 'gnu/linux)
+    ;; If you're on GNOME 42+, `color-scheme` often shows 'prefer-dark' or 'prefer-light'.
+    ;; If the user is using an older system or a different DE, this may fail or return an empty string.
+    (let ((gsettings-output (string-trim
+                             (shell-command-to-string
+                              "gsettings get org.gnome.desktop.interface color-scheme 2>/dev/null"))))
+      (cond
+       ((string-match "dark" gsettings-output) 'dark)
+       ((string-match "light" gsettings-output) 'light)
+       (t nil))))
+
+   ;; ---------------------------
+   ;; Otherwise, undetermined
+   ;; ---------------------------
+
+   (t nil)))
+
 (defun my/set-theme-based-on-appearance ()
-  "Set Emacs theme based on macOS system appearance."
-  (let ((appearance (my/mac-get-system-appearance)))
+  "Set Emacs theme based on system appearance if possible, otherwise fallback."
+  (let ((appearance (my/get-system-appearance)))
     ;; Disable all currently enabled themes to prevent conflicts
     (mapc #'disable-theme custom-enabled-themes)
     (pcase appearance
@@ -55,11 +91,13 @@
       ('light
        (load-theme light-theme t))
       (_
-       (load-theme light-theme t))))) ;; Default to light if undetermined
+       ;; If we cannot detect the theme, default to light 
+       (load-theme light-theme t)))))
 
 ;; Apply theme at startup
 (my/set-theme-based-on-appearance)
 
+
 ;; ===========================
 ;; UI Customizations
 ;; ===========================
@@ -77,7 +115,7 @@
 (global-visual-line-mode 1)
 
 ;; Set Default Font to Iosevka 18pt
-(set-face-attribute 'default nil :family "Iosevka" :height 180)
+(set-face-attribute 'default nil :family "Iosevka" :height 150)
 
 ;; Backup files -> ~/.emacs.d/backups/
 (setq backup-directory-alist `(("." . "~/.emacs.d/backups"))
@@ -162,11 +200,12 @@
   :hook ((python-mode . lsp)
          (kotlin-mode . lsp)
          (c++-mode . lsp)
+         (c-mode . lsp)
          (rust-mode . lsp))
   :commands lsp
   :config
   (setq lsp-prefer-flymake nil) ;; Use lsp-ui and flycheck instead of flymake
-  (setq lsp-enable-snippet nil) ;; Disable snippet support if not needed
+  (setq lsp-enable-snippet t) ;; Disable snippet support if not needed
   (setq lsp-headerline-breadcrumb-enable nil)) ;; Disable breadcrumb for performance
 
 (use-package lsp-ui