emacs-config/unused/20-ide.org

IDE Configuration

• Intro
• Tree Sitter
• Magit
• Treemacs
• Flycheck
• LSP Mode
• Company Mode

Intro

Packages/configurations that makes emacs more IDE-like, such as:

• like popup completions with LSP
• error checking on-the-fly
• tree-view file explorer
• git Integration
• tree-sitter based syntax highlighting

Tree Sitter

Tree sitter highlighting in emacs. Tree-sitter Syntax Highlighting website

  (use-package tree-sitter
    :config
    (global-tree-sitter-mode))
  (use-package tree-sitter-langs
    :after tree-sitter)

Magit

Git Interface for Emacs

  (use-package magit
    :bind
    ("C-x g" . magit-status)
    ("C-x M-g" . magit-dispatch))

Treemacs

  (use-package treemacs
    :defer t
    :init
    (with-eval-after-load 'winum
(define-key winum-keymap (kbd "M-0") #'treemacs-select-window))
    :config
    (add-hook 'treemacs-mode-hook (lambda ()
		      (setq mode-line-format nil)
		      (redraw-display)))
    (progn
(setq treemacs-collapse-dirs                   (if treemacs-python-executable 3 0)
     treemacs-deferred-git-apply-delay        0.5
     treemacs-directory-name-transformer      #'identity
     treemacs-display-in-side-window          t
     treemacs-eldoc-display                   t
     treemacs-file-event-delay                5000
     treemacs-file-extension-regex            treemacs-last-period-regex-value
     treemacs-file-follow-delay               0.2
     treemacs-file-name-transformer           #'identity
     treemacs-follow-after-init               t
     treemacs-expand-after-init               t
     treemacs-git-command-pipe                ""
     treemacs-goto-tag-strategy               'refetch-index
     treemacs-indentation                     2
     treemacs-indentation-string              " "
     treemacs-indent-guide-style              'line
     treemacs-is-never-other-window           nil
     treemacs-max-git-entries                 5000
     treemacs-missing-project-action          'ask
     treemacs-move-forward-on-expand          nil
     treemacs-no-png-images                   nil
     treemacs-no-delete-other-windows         t
     treemacs-project-follow-cleanup          nil
     treemacs-persist-file                    (expand-file-name ".cache/treemacs-persist" user-emacs-directory)
     treemacs-position                        'left
     treemacs-read-string-input               'from-child-frame
     treemacs-recenter-distance               0.1
     treemacs-recenter-after-file-follow      nil
     treemacs-recenter-after-tag-follow       nil
     treemacs-recenter-after-project-jump     'always
     treemacs-recenter-after-project-expand   'on-distance
     treemacs-litter-directories              '("/node_modules" "/.venv" "/.cask")
     treemacs-show-cursor                     nil
     treemacs-show-hidden-files               t
     treemacs-silent-filewatch                nil
     treemacs-silent-refresh                  nil
     treemacs-sorting                         'alphabetic-asc
     treemacs-select-when-already-in-treemacs 'move-back
     treemacs-space-between-root-nodes        t
     treemacs-tag-follow-cleanup              t
     treemacs-tag-follow-delay                1.5
     treemacs-text-scale                      nil
     treemacs-user-mode-line-format           nil
     treemacs-user-header-line-format         nil
     treemacs-width-is-initially-locked       nil
     treemacs-width                           25
     treemacs-workspace-switch-cleanup        nil)

;; The default width and height of the icons is 22 pixels. If you are
;; using a Hi-DPI display, uncomment this to double the icon size.
(treemacs-resize-icons 16)

(treemacs-follow-mode t)
(treemacs-filewatch-mode t)
(treemacs-fringe-indicator-mode 'always)

(pcase (cons (not (null (executable-find "git")))
     (not (null treemacs-python-executable)))
 (`(t . t)
  (treemacs-git-mode 'deferred))
 (`(t . _)
  (treemacs-git-mode 'simple)))

(treemacs-hide-gitignored-files-mode nil))
    :bind
    (:map global-map
   ("M-0"       . treemacs-select-window)
   ("C-x t 1"   . treemacs-delete-other-windows)
   ("C-x t t"   . treemacs)
   ("C-x t B"   . treemacs-bookmark)
   ("C-x t C-t" . treemacs-find-file)
   ("C-x t M-t" . treemacs-find-tag)))

  (use-package treemacs-icons-dired
    :config (treemacs-icons-dired-mode))

  (use-package treemacs-magit
    :after (treemacs magit)
    :ensure t)

Flycheck

  (use-package flycheck
    :init
    (global-flycheck-mode))

LSP Mode

This package provides a LSP interface for emacs, for autocompletion

  (use-package lsp-mode
    :init
    (setq lsp-keymap-prefix "C-l")
    :hook
    (lsp-mode . lsp-enable-which-key-integration)
    (lsp-mode . lsp-completion-mode)
    :custom
    (lsp-eldoc-render-all t)
    :commands (lsp lsp-mode lsp-deferred))


  (use-package lsp-ui
    :commands lsp-ui-mode
    :custom
    (lsp-ui-peek-always-show t)
    (lsp-ui-sideline-show-hover t)
    (lsp-ui-doc-position 'bottom))

  (use-package lsp-treemacs
     :after lsp-mode
     :hook (lsp-mode . lsp-treemacs-symbols))

Company Mode

  (use-package company
    :after lsp-mode
    :hook (lsp-mode . company-mode)
    :bind
    (:map company-active-map
   ("<tab>" . company-complete-selection))
    (:map lsp-mode-map
   ("<tab>" . company-indent-or-complete-common))
    :custom
    (company-minimum-prefix-length 1)
    (company-idle-delay 0.0))

  (use-package company-box
    :after company
    :hook (company-mode . company-box-mode))