dotfiles/home-manager/modules/emacs/.emacs.d/org/base.org

# SPDX-FileCopyrightText: 2022 Richard Brežák <richard@brezak.sk>
#
# SPDX-License-Identifier: LGPL-3.0-or-later

#+STARTUP: content
#+TITLE: Magic_RB's Emacs configuration

* Stuff That Needs Work
** TODO Spell checking
** TODO Calc mode
** TODO Org Agenda
*** Make it work on my phone
** TODO Org Roam
** TODO org-evil moving stuff, left, right with M-j M-; instead of M-h M-l
** Org Web Tools
https://github.com/alphapapa/org-web-tools
* Stuff

#+NAME: base
#+BEGIN_SRC emacs-lisp
  (use-package pdf-tools
    :straight t
    :hook (('TeX-mode-hook . visual-line-mode))
    :config
    ;; initialise
    (pdf-tools-install)
    (setq TeX-PDF-mode 1)
    ;; open pdfs scaled to fit page
    (setq-default pdf-view-display-size 'fit-page)
    ;; automatically annotate highlights
    (setq pdf-annot-activate-created-annotations t))
#+END_SRC

Enable =all-the-icons=, it's used by =treemacs= and =doom-modeline=.

#+BEGIN_SRC emacs-lisp
  (use-package all-the-icons
    :straight t)
#+END_SRC

Set ispell program to hunspell, this is very much a TODO, since the spelling configuration is rather minimal at this
point in time.

#+BEGIN_SRC emacs-lisp
  (setq ispell-program-name "hunspell")
#+END_SRC

Fetch the ~SSH_AUTH_PATH~ from ~.profile~.

#+BEGIN_SRC emacs-lisp
  (setenv "SSH_AUTH_SOCK" (shell-command-to-string ". ~/.profile && printf $SSH_AUTH_SOCK"))
#+END_SRC

* Language
** SCAD Programming Language

Enable ~scad-mode~

#+BEGIN_SRC emacs-lisp
  (use-package scad-mode
    :straight t)
#+END_SRC

** Rust Programming Language

Enable ~rustic~ and more feature-full alternative to ~rust-mode~, actually a rather distant fork of it.
Also hook ~lsp-mode~ on it.

#+NAME: rust
#+BEGIN_SRC emacs-lisp
  (use-package rustic
    :straight t
    :hook (rustic-mode . lsp-mode)
    :mode ("\\.rs\\'" . rustic-mode))
#+END_SRC
* LSP
** envrc

Enable ~envrc~, which changes ENVs on a per buffer basis.

#+BEGIN_SRC emacs-lisp
  (use-package envrc
    :straight t
    :init
    (envrc-global-mode))
#+END_SRC

** lsp-mode

Increase GC threshold to avoid random freezes on garbage collection.

#+NAME: gc-cons-threshold
#+BEGIN_SRC emacs-lisp :tangle no
  (setq gc-cons-threshold 100000000)
#+END_SRC

Increase the amount of data Emacs reads from a process in one go, default is 4KB, but some LSP servers produce responses up to 3MB.

#+NAME: read-process-output-max
#+BEGIN_SRC emacs-lisp :tangle no
  (setq read-process-output-max (* (* 1024 1024) 3))
#+END_SRC

Switch completion provider to =capf=, even though it should be the default, but just to make sure it. =company-lsp=
is what =lsp-mode= switched away from.

#+NAME: lsp-completion-provider
#+BEGIN_SRC emacs-lisp :tangle no
  (setq lsp-completion-provider :capf)
#+END_SRC

Set the minimum delay between LSP refreshes, should help with performance when typing really fast.

#+NAME: lsp-idle-delay
#+BEGIN_SRC emacs-lisp :tangle no
  (setq lsp-idle-delay 0.500) ;; adjust me
#+END_SRC

Setup rustic to prefer ~rust-analyzer~ instead of ~rls~ and also don't format on save, it's really annoying.

#+NAME: lsp-rustic
#+BEGIN_SRC emacs-lisp :tangle no
  (setq rustic-lsp-server 'rust-analyzer)
  (setq rustic-compile-command "cargo build")
  (setq rustic-format-trigger nil);'on-save
#+END_SRC

Enable inline type hints and disable chaining and parameter hints for Rust.

#+NAME: lsp-rust-analyzer
#+BEGIN_SRC emacs-lisp :tangle no
  (setq lsp-rust-analyzer-display-chaining-hints nil)
  (setq lsp-rust-analyzer-display-parameter-hints nil)
  (setq lsp-rust-analyzer-server-display-inlay-hints t)
#+END_SRC

Finally enable ~lsp-mode~.

#+BEGIN_SRC emacs-lisp :noweb yes
  (use-package lsp-mode
    :straight t
    :after (envrc)
    :config
    (setq lsp-prefer-flymake nil)
    (setq lsp-ui-doc-enable nil)
    :config
    <<lsp-rustic>>
    ;; <<lsp-rust-analyzer>>

    <<gc-cons-threshold>>
    <<read-process-output-max>>
    <<lsp-completion-provider>>
    ;; <<lsp-idle-delay>>
    <<lsp-typescript-tramp>>
    <<lsp-scala-tramp>>)
#+END_SRC

** lsp-pyright

Enable ~lsp-pyright~, the best Python language server, all of them are a bit lackluster, this one is the best
option.

#+BEGIN_SRC emacs-lisp
  (use-package lsp-pyright
    :straight t
    :hook (python-mode . lsp))
#+END_SRC

** lsp-ui

Enable ~lsp-ui~, it adds doc frames, code actions at the side and other cool things, some of them are annoying and
need disabling.

#+BEGIN_SRC emacs-lisp
  (use-package lsp-ui
    :straight t
    :after (company-box)
    :config
    ;; disable focus on mouse over
    (push '(no-accept-focus . t) lsp-ui-doc-frame-parameters)
    (push '(no-accept-focus . t) company-box-frame-parameters)

    (add-to-list 'lsp-ui-doc-frame-parameters '(no-accept-focus . t))
    (add-to-list 'company-box-frame-parameters '(no-accept-focus . t))
    (setq mouse-autoselect-window nil))
#+END_SRC

** flycheck

Enable ~flycheck~ for in-buffer hints and errors and warning and things.

#+BEGIN_SRC emacs-lisp
  (use-package flycheck
    :straight t
    :init (global-flycheck-mode))
#+END_SRC

** origami

Enable ~origami~. It allows one to fold and unfold a section with =zc= and =zo= in ~evil-mode~. Hook it on both ~conf-mode~ and ~prog-mode~;

#+BEGIN_SRC emacs-lisp
  (use-package origami
    :straight t
    :hook ((prog-mode . origami-mode)
           (conf-mode . origami-mode)))
#+END_SRC

Enable ~origami-lsp~. Some LSP servers specify these folding ranges and this package makes ~origami~ understand that
and work with it.

#+BEGIN_SRC emacs-lisp
  (use-package lsp-origami
    :straight t
    :hook (lsp-after-open-hook lsp-origami-try-enable))
#+END_SRC


* Projectile

Enable ~projectile~.

#+BEGIN_SRC emacs-lisp
  (use-package projectile
    :straight t
    :config
    (projectile-mode +1)
    (define-key projectile-mode-map (kbd "C-c p") 'projectile-command-map))
#+END_SRC

* Random Bits and Bobs

Set keystrokes echo to something really low, it's useful to know what you're typing.

#+BEGIN_SRC emacs-lisp
  (setq echo-keystrokes 0.01)
#+END_SRC

Set default major mode to org mode, it's much more useful than fundamental.

#+BEGIN_SRC emacs-lisp
  (setq-default major-mode 'org-mode)
#+END_SRC

Delete files by moving to trash.

#+BEGIN_SRC emacs-lisp
  (setq-default delete-by-moving-to-trash t)
#+END_SRC

Equalize windows after split.

#+BEGIN_SRC emacs-lisp
  (setq-default window-combination-resize t)
#+END_SRC

Increase undo limit to 80MB and enable fine undo, Evil will no longer chunk all edits in =INSERT= mode into one big
undo blob.

#+BEGIN_SRC emacs-lisp
  (setq undo-limit 80000000
        evil-want-fine-undo t)
#+END_SRC

For now, don't autosave. Because editing on remote disks, not TRAMP, but just NFS or CIFS, becomes extremely painful.

#+BEGIN_SRC emacs-lisp :tangle no
  (setq auto-save-default t)
#+END_SRC

Enable line numbers for both programming buffers (Rust, C, and such) and configuration buffers (Nix, Yaml, Json, and
such) and Org mode.

#+BEGIN_SRC emacs-lisp
  (add-hook 'conf-mode-hook 'display-line-numbers-mode)
  (add-hook 'prog-mode-hook 'display-line-numbers-mode)
#+END_SRC

Improve scrolling by:
1. disabling acceleration
2. making it so that the window under the pointer is scroller no matter the focused window
3. changing default scroll amount to 5 lines and 1 when shift is pressed

   #+BEGIN_SRC emacs-lisp
     (setq mouse-wheel-scroll-amount '(5 ((shift) . 1)))
     (setq mouse-wheel-progressive-speed nil)
     (setq mouse-wheel-follow-mouse 't)
   #+END_SRC

   Enable perentheses highlighting and pairing.

   #+BEGIN_SRC emacs-lisp
     (show-paren-mode 1)
     (electric-pair-mode)
   #+END_SRC

   Set fill colum, horizontal indicator, for both =fill-paragraph=(=M-q=) and the visual horizontal indicator.

   #+BEGIN_SRC emacs-lisp
     (setq-default display-fill-column-indicator-column 120
                   fill-column 120)
   #+END_SRC

   Start Emacs server, unless it's already running. Starting a new Emacs instance while debugging and getting an error
   about a server already running can be a bit annoying.

   #+BEGIN_SRC emacs-lisp
     (load "server")
     (unless (server-running-p) (server-start))
   #+END_SRC

   #+BEGIN_SRC emacs-lisp
     (setq backup-directory-alist
           `(("." . ,(concat user-emacs-directory "backups"))))
   #+END_SRC

** Windows

As [[https://github.com/tecosaur/][tecosaur]] has it in his [[https://tecosaur.github.io/emacs-config/config.html#windows][configuration]], I was to be asked which window to should be brought up when I split a
window in Emacs. So create a new advice which will run after evil split commands and brings up the buffer selector.

#+BEGIN_SRC emacs-lisp
  (defadvice evil-window-vsplit (after activate compile)
    (counsel-switch-buffer))
  (defadvice evil-window-split (after activate compile)
    (counsel-switch-buffer))
#+END_SRC

** PGTK neo2 fix
#+BEGIN_SRC emacs-lisp
  (put 'none 'modifier-value 0)
  (setq x-hyper-keysym 'none)
#+END_SRC