base stater emacs configurationi

base-emacs.el

;; ==========================================
;; 1. PACKAGE MANAGEMENT SETUP
;; ==========================================

(require 'package)
(setq package-enable-at-startup nil)

;; Define where Emacs should look to download external packages
(setq package-archives '(("melpa" . "https://melpa.org/packages/")
                         ("nongnu" . "https://elpa.nongnu.org/nongnu/")
                         ("elpa-devel" . "https://elpa.gnu.org/devel/")
                         ("gnu" . "https://elpa.gnu.org/packages/")))

(package-initialize)

;; Automatically download and install 'use-package' if it's not already installed
;; 'use-package' is used further down to cleanly install and configure packages
(unless (package-installed-p 'use-package)
  (package-refresh-contents)
  (package-install 'use-package))


;; ==========================================
;; 2. BASIC INTERFACE & UTILITY MODES
;; ==========================================

;; (global-hl-line-mode 1)      ; Highlight the current line (currently turned off)
(context-menu-mode 1)           ; Enable right-click mouse menus
(electric-pair-mode 1)          ; Automatically close brackets/parentheses: typing ( inserts ()
(tool-bar-mode -1)              ; Hide the graphical tool bar icon row to save space
(menu-bar-mode -1)              ; Hide the file/edit menu bar at the top
(scroll-bar-mode -1)            ; Hide the window scrollbars for a cleaner look
(global-visual-line-mode t)     ; Enable word-wrap so long lines don't wrap off-screen
(global-display-line-numbers-mode 1) ; Show line numbers on the left side
(save-place-mode 1)             ; Remember where the cursor was when you reopen a closed file
(global-auto-revert-mode 1)     ; Automatically refresh a file if it changes outside of Emacs
(horizontal-scroll-bar-mode -1) ; Hide horizontal scroll bars
(delete-selection-mode t)       ; Typing over highlighted text replaces/deletes it


;; ==========================================
;; 3. SYSTEM & BEHAVIOR TWEAKS
;; ==========================================

(setq ring-bell-function 'ignore             ; Turn off the annoying alert/error bell noise
      make-backup-files nil                  ; Stop Emacs from creating "file~" backup files
      use-dialog-box nil                     ; Use the keyboard/minibuffer prompt instead of mouse popups
      auto-save-default nil                  ; Stop Emacs from creating "#file#" auto-save files
      create-lockfiles nil                   ; Disable creation of system lockfiles (.#file)
      inhibit-startup-message t              ; Skip the default Emacs splash/welcome screen
      global-auto-revert-non-file-buffers t  ; Auto-refresh special screens (like Dired file managers)
      ibuffer-expert t                       ; Don't ask for confirmation when killing buffers in ibuffer
      column-number-mode t                   ; Show the exact column number in the bottom status bar
      initial-scratch-message "Emacs > Neovim")            ; Start the *scratch* buffer completely blank

;; Clipboard integration: share copy/paste smoothly with your operating system
(setq x-select-enable-clipboard t
      save-interprogram-paste-before-kill t
      yank-pop-change-selection t)

;; Short answers: accept 'y' or 'n' instead of typing out the full 'yes' or 'no'
(defalias 'yes-or-no-p 'y-or-n-p)
(setq-default use-short-answers t)

;; Tabs & Indentation
(setq-default indent-tabs-mode nil)  ;; Insert spaces instead of hard tabs when pressing Tab
(setq-default tab-width 4)            ;; Make 1 tab equal to 4 spaces
;; Quick Tip for your friend:
;; Convert Tabs to Spaces: Use M-x untabify
;; Convert Spaces to Tabs: Use M-x tabify

;; Text Encoding: Force everything to use modern UTF-8 encoding
(setq locale-coding-system 'utf-8)
(set-terminal-coding-system 'utf-8)
(set-keyboard-coding-system 'utf-8)
(set-selection-coding-system 'utf-8)
(prefer-coding-system 'utf-8)

(fringe-mode 0) ;; Remove the left and right empty side gutters for a wider view area


;; ==========================================
;; 4. EXTERNAL PACKAGES & BETTER SEARCHING
;; ==========================================

;; Compatibility library for packages
(use-package compat
  :ensure t)

;; Vertical completion UI for minibuffer
(use-package vertico
  :ensure t
  :custom
  (vertico-resize t)
  :init
  (vertico-mode))

;; Folder navigation tweaks for Vertico
(use-package vertico-directory
  :after vertico
  :ensure nil
  :bind (:map vertico-map
              ("RET" . vertico-directory-enter)
              ("DEL" . vertico-directory-delete-char)
              ("M-DEL" . vertico-directory-delete-word))
  :hook (rfn-eshadow-update-overlay . vertico-directory-tidy))

;; Save minibuffer history across restarts
(use-package savehist
  :ensure t
  :init
  (savehist-mode 1))

;; Built-in Emacs completion configurations
(use-package emacs
  :ensure t
  :custom
  (enable-recursive-minibuffers t)
  (read-extended-command-predicate #'command-completion-default-include-p)
  :init
  (defun crm-indicator (args)
    (cons (format "[CRM%s] %s"
          (replace-regexp-in-string
           "\\`\\[.*?]\\*\\|\\[.*?]\\*\\'" ""
           crm-separator)
          (car args))
      (cdr args)))
  (advice-add #'completing-read-multiple :filter-args #'crm-indicator))

;; Case-insensitive completion
(setq read-file-name-completion-ignore-case t
      read-buffer-completion-ignore-case t
      completion-ignore-case t)

;; Add annotations to completion candidates
(use-package marginalia
  :ensure t
  :config
  (marginalia-mode 1))

;; Use out-of-order pattern matching for searches
(use-package orderless
  :ensure t
  :custom
  (completion-styles '(orderless basic))
  (completion-category-defaults nil)
  (completion-category-overrides '((file (styles partial-completion)))))

add and Configuring theme

(use-package catppuccin-theme
  :ensure t)

(setq catppuccin-flavor 'mocha) ;; or 'latte, 'macchiato, or 'mocha or frappe
(catppuccin-reload)

other way
M-x customize-themes RET

relative line numbers

(setq display-line-numbers-type 'relative) 
(global-display-line-numbers-mode 1)