Port remaining configuration from old emacs module

config.el

@@ -41,6 +41,7 @@
               (set-face-attribute 'font-lock-keyword-face nil :weight 'bold)
               (set-face-attribute 'font-lock-type-face nil :weight 'bold)
               (set-face-attribute 'show-paren-match nil :background nil))))
+(after! whitespace (set-face-attribute 'whitespace-line nil :background nil))
 
 ;; This determines the style of line numbers in effect. If set to `nil', line
 ;; numbers are disabled. For relative line numbers, set this to `relative'.
@@ -96,8 +97,16 @@
 ;; Remove the silly doom newline advice.
 (advice-remove 'newline-and-indent #'+default--newline-indent-and-continue-comments-a)
 
-;; Rainbow delimiters in all prog-mode buffers.
-(add-hook! prog-mode #'rainbow-delimiters-mode-enable)
+;; I actually like it when Emacs recenters the screen while scrolling. This may
+;; be an issue in large files. When that becomes an issue add an exception here.
+(setq scroll-conservatively 0)
+
+;; Add some extra whitespace highlights to doom's opinion.
+(advice-add 'doom-highlight-non-default-indentation-h
+            :after
+            (lambda () (when (bound-and-true-p whitespace-mode)
+                         (appendq! whitespace-style '(trailing lines-tail empty))
+                         (whitespace-mode +1))))
 
 ;; -----------------------------------------------------------------------------
 ;; Additional coniguration for doom modules.
@@ -112,6 +121,17 @@
 ;; Python virtualenv configuration.
 (after! lsp-pyright (setq lsp-pyright-venv-path (concat (getenv "HOME") "/.virtualenvs")))
 
+;; Rainbow delimiters in all prog-mode buffers.
+(add-hook! prog-mode #'rainbow-delimiters-mode-enable)
+
+;; Make TRAMP easier to use for sudo on remote hosts.
+(after! tramp
+  ;; This line proxies all sudo connections via an ssh connection to the provided hostname.
+  (add-to-list 'tramp-default-proxies-alist '(nil "\\`root\\'" "/ssh:%h:"))
+  ;; This rule is an exception to the above so that local sudo does not proxy via ssh. This has to
+  ;; be added last so that it is the first element of the list.
+  (add-to-list 'tramp-default-proxies-alist '("localhost" "\\`root\\'" nil)))
+
 ;; Extra VTerm configuration.
 (after! vterm
   (setq vterm-shell "/bin/zsh"
@@ -129,21 +149,96 @@
 ;; Configuration for additional packages on top of doom and its modules.
 ;; -----------------------------------------------------------------------------
 
+;; Faster navigation.
+(use-package! ace-jump-mode
+  :bind (("C-c SPC" . ace-jump-mode)))
+
+;; A nicer interface for ripgrep. Note that since doom required rg we don't
+;; consider the case if it's not installed.
+(use-package! deadgrep
+  :init
+  (setq deadgrep-project-root-function
+        (lambda ()
+          (read-directory-name "Base directory: " nil default-directory t)))
+  :bind
+  (("C-x C-g" . deadgrep))
+  (:map deadgrep-mode-map
+   ("C-o" . deadgrep-open-result-other-window)
+   ("<RET>" . deadgrep-visit-result-other-window))
+  :config
+  (defun deadgrep-open-result-other-window ()
+    "Open the result in other window without changing to it."
+    (interactive)
+    (save-selected-window (deadgrep-visit-result-other-window))))
+
+;; Duplicate things.
+(use-package! duplicate-thing
+  :bind (("M-C" . duplicate-thing)))
+
+;; It's the 21st century, a file explorer should be pretty.
+(use-package! treemacs-icons-dired
+  :after dired
+  :hook (dired-mode . treemacs-icons-dired-mode))
+
 ;; Kill line when calling kill-region without a selected region.
 (use-package! whole-line-or-region
   :config
   (define-key whole-line-or-region-local-mode-map [remap comment-dwim] nil)
   (whole-line-or-region-global-mode t))
 
-;; Duplicate things.
-(use-package! duplicate-thing
-  :bind (("M-C" . duplicate-thing)))
+;; -----------------------------------------------------------------------------
+;; Global configuration.
+;; -----------------------------------------------------------------------------
+
+(setq-default
+ ;; Standard fill-column width.
+ fill-column 100
+ ;; Do not use tab characters for indentation.
+ indent-tabs-mode nil
+ ;; Kill whole line when point at beginning of line.
+ kill-whole-line t
+ ;; Always indent. Why would I ever want to insert a tab?
+ tab-always-indent t
+ ;; Default indentation size - applies even when indent-tabs-mode is nil.
+ tab-width 8
+ ;; Highlight lines that are too long in whitespace mode.
+ whitespace-line-column fill-column)
+
+;; CamelCase as separate words.
+(global-subword-mode t)
+
+;; Doom emacs recommends `visual-line-mode' as it claims wrapping is expensive.
+(global-visual-line-mode t)
+
+;; But "C-e" behaves differently in `visual-line-mode' than when they are
+;; wrapped. It goes to the end of the visual line, not the logical line. This
+;; can be fixed by defining the following aliases.
+(defalias #'end-of-visual-line #'end-of-line)
+(defalias #'beginning-of-visual-line #'beginning-of-line)
+
+(defun indent-region-or-buffer ()
+  "Indent a region if selected, otherwise the whole buffer."
+  (interactive)
+  (if (region-active-p)
+      (indent-region (region-beginning) (region-end))
+    (indent-region (point-min) (point-max))))
+
+(defun unfill-paragraph (&optional region)
+  "Takes a multi-line paragraph and makes it into a single line of text."
+  (interactive (progn (barf-if-buffer-read-only) '(t)))
+  (let ((fill-column (point-max))
+        ;; This would override `fill-column' if it's an integer.
+        (emacs-lisp-docstring-fill-column t))
+    (fill-paragraph nil region)))
 
 ;; -----------------------------------------------------------------------------
-;; Keybindings.
+;; Global keybindings.
 ;; -----------------------------------------------------------------------------
 
 (map!
+ ;; For functions defined above.
+ "M-Q" #'unfill-paragraph
+ "C-M-\\" #'indent-region-or-buffer
  ;; Create binding before dired is loaded.
  "C-x C-j" #'dired-jump
  ;; More convenient window switching.
@@ -152,4 +247,11 @@
  ;; Kill current buffer without prompting.
  :desc "kill-buffer" "C-x k" (lambda ()
                                (interactive)
-                               (let (kill-buffer-query-functions) (kill-buffer))))
+                               (let (kill-buffer-query-functions) (kill-buffer)))
+ ;; Scroll up/down, but keep point in place.
+ "C-<" (lambda()
+         (interactive)
+         (let ((scroll-preserve-screen-position nil)) (scroll-down 1)))
+ "C->" (lambda()
+         (interactive)
+         (let ((scroll-preserve-screen-position nil)) (scroll-up 1))))

init.el

@@ -68,7 +68,7 @@
        :emacs
        dired             ; making dired pretty [functional]
        electric          ; smarter, keyword-based electric-indent
-       ;;ibuffer         ; interactive buffer management
+       (ibuffer +icons)         ; interactive buffer management
        (undo +tree)              ; persistent, smarter undo for your inevitable mistakes
        vc                ; version-control and Emacs, sitting in a tree
 

packages.el

@@ -7,8 +7,12 @@
 
 
 ;; To install SOME-PACKAGE from MELPA, ELPA or emacsmirror:
-;(package! some-package)
+;;(package! some-package)
+(package! ace-jump-mode
+  :recipe (:local-repo "repos/ace-jump-mode"))
+(package! deadgrep)
 (package! duplicate-thing)
+(package! treemacs-icons-dired)
 (package! whole-line-or-region)
 
 ;; To install a package directly from a remote git repo, you must specify a