init.el

;; Time-stamp: <2020-09-10 21:53:21 kmodi>
;; Author: Kaushal Modi

;; Global variables
;; https://www.reddit.com/r/emacs/comments/3kqt6e/2_easy_little_known_steps_to_speed_up_emacs_start/
(defvar modi/gc-cons-threshold--orig gc-cons-threshold)
(setq gc-cons-threshold (* 100 1024 1024)) ;100 MB before garbage collection

;; Remove dot from in-between the first and last names if present.
(setq user-full-name (replace-regexp-in-string "\\." " " user-full-name))

(defvar user-home-directory (file-name-as-directory (getenv "HOME")))
(setq user-emacs-directory (file-name-as-directory (expand-file-name ".emacs.d" user-home-directory)))

(defvar modi/temporary-file-directory (let ((dir (file-name-as-directory (expand-file-name user-login-name temporary-file-directory))))
                                        (make-directory dir :parents)
                                        dir)
  "User-specific temporary directory name.")

(setq org-directory (let ((dir (file-name-as-directory (expand-file-name "org" user-home-directory))))
                      (make-directory dir :parents)
                      dir))

(defvar user-personal-directory (let ((dir (file-name-as-directory (expand-file-name "personal" user-emacs-directory))))
                                  (make-directory dir :parents)
                                  dir)
  "User's personal directory to contain non-git-controlled files.")
(setq custom-file (expand-file-name "custom-file.el" user-personal-directory))

(defvar emacs-version-short (format "%s_%s"
                                    emacs-major-version emacs-minor-version)
  "A variable to store the current emacs versions as <MAJORVER>_<MINORVER>.
So, for emacs version 25.0.50.1, this variable will be 25_0.")

(defvar modi/org-version-select 'elpa
  "Variable to choose the version of Org to be loaded.
Valid values are `dev', `elpa' and `emacs'.

When set to `dev', the development version of Org built locally is loaded.
When set to `elpa', Org is installed and loaded from Org Elpa.
When set to `emacs', the Org version shipped with Emacs is used.

The value is defaulted to `elpa' as few things in this config
need Org version to be at least 9.x.")

(defvar modi/states (make-hash-table :test 'equal)
  "Hash table to store the states of various variables throughout
  this config.")

(defconst my-packages
  '(ace-window
    adaptive-wrap ; indented line wrapping
    ag wgrep wgrep-ag s ; ag > ack > grep
                                        ; wgrep+wgrep-ag allow editing files
                                        ; directly in ag buffer
    all all-ext ; edit ALL lines matching regex
    anzu   ; shows total search hits in mode line, > query-replace
    ascii-art-to-unicode
    auto-complete fuzzy
    auto-highlight-symbol
    avy ; > ace-jump-mode
    beacon ; visual flash to show the cursor position
    benchmark-init
    bm ; visual bookmarks
    buffer-move
    command-log-mode ; for logging commands; useful when demoing emacs
    deft ; quick note taking and management
    diff-hl
    dired-single dired-collapse
    drag-stuff
    easy-escape ; Make the \\ escape chars more pleasant looking in elisp regexps
    el2markdown ; Generate README.md files from Commentary section in .el files
    elfeed
    engine-mode ; search engines
    expand-region
    eww-lnum ; jump to links in eww buffer ace-jump style
    fill-column-indicator
    flycheck                    ; sh-shellcheck
    flyspell-correct-ivy ; ivy interface for correct spelling suggestions
    fold-this
    gist
    git-timemachine ; walk through git revisions
    ggtags ctags-update
    hardcore-mode
    hideshow-org
    htmlize
    hungry-delete
    hydra
    ibuffer-projectile
    imenu-list
    indent-guide
    interleave ; takes notes associated to pdf files in org mode
    isend-mode ; used in setup-perl.el
    ivy swiper counsel
    iy-go-to-char ; Go to next char which is similar to "f" and "t" in vim
    key-chord ; map pairs of simultaneously pressed keys to commands
    keyfreq ; find which commands you use the most
    kurecolor ; Quick tweaks to color codes in CSS files
    magit ; for git management
    manage-minor-mode
    markdown-mode
    minibuffer-line
    multi-term
    multiple-cursors
    neotree
    nov    ;Ebook (.epub) reader
    org-cliplink ; paste copied links as well-formatted org-mode links with desc
    org-tree-slide
    outorg navi-mode ; supporting packages for outshine
    outshine ; org-mode navigation and organization outside org-mode
    paradox ; package menu improvements
    page-break-lines ; Convert the ^L (form feed) chars to horizontal lines
    pomodoro
    poporg ; edit comments from any other mode in org mode
    rainbow-delimiters
    rainbow-mode
    region-bindings-mode ; complements really well with multiple-cursors
    rpn-calc
    shackle
    smart-compile
    smart-mark
    smart-mode-line popup rich-minority
    smex ; smart M-x
    sunshine forecast ; weather
    sx
    tiny
    tldr                ;Concise "man pages"
    transpose-frame ; for the priceless `rotate-frame' and `transpose-frame'
    undo-tree ; supercool undo visualization
    use-package use-package-chords ; optimize package loading
    visual-regexp
    ;; volatile-highlights
    web-mode
    webpaste   ; Paste code snippets to ptpb.pw (default), ix.io, etc.
    which-key ; > guide-key
    wolfram ; query wolframalpha; needs user to sign up for a developer AppID
    wordnut ; offline dictionary (requires installing Wordnet wn application)
    wrap-region ; wrap selection with punctuations, tags (org-mode, markdown-mode, ..)
    writegood-mode ; highlight passive voice, weasel words and duplicates
    xkcd ; comic
    yafolding ; indentation detected code folding
    yaml-mode ; Useful for editing Octopress' _config.yml
    yasnippet
    zop-to-char

    ;; Themes
    ;; zenburn-theme ; < fork
    ;; smyx-theme ; < fork
    ample-theme ; ample, ample-flat, ample-light
    darktooth-theme ; coffee
    leuven-theme ; awesome white background theme
    planet-theme ; dark blue
    tao-theme ; monochrome
    twilight-bright-theme
    twilight-anti-bright-theme
    ;; Crypt
    ;; nlinum ; better performance than linum ; Sticking to frozen version 1.7 in my config
    ;; bookmark+ ; able to bookmark desktop sessions
    ;; ox-twbs ; export to twitter bootstrap html < fork (supports org 9.0+)
    ;; ox-reveal ; used to export to HTML slides; < git clone
    ;; git-link ; get git links with line numbers and commit-hash/branch ; < fork
    ;; ido-vertical-mode flx-ido ido-ubiquitous ; < ivy, counsel
    ;; git-gutter git-gutter-fringe git-gutter+ git-gutter-fringe+ ; < diff-hl
    ;; popwin ; < shackle
    ;; helm helm-swoop ; < swiper
    ;; helm-gtags ; < ggtags
    ;; projectile ; Better than fiplr < fork
    )
  "A list of packages to ensure are installed at launch")

;; Basic requires
(require 'subr-x)                       ;For when-let*, if-let*, ..
;; Place `setup-var-overrides.el' with `(provide 'setup-var-overrides)' in
;; `user-personal-directory'
(add-to-list 'load-path user-personal-directory)
(require 'setup-var-overrides nil :noerror)

(load custom-file :noerror :nomessage) ; Load the `M-x customize` generated file
(load (locate-user-emacs-file "general.el") nil :nomessage)
(load (locate-user-emacs-file "setup-packages.el") nil :nomessage)
;; (package-initialize) ; Do NOT delete this comment
;;   In emacs 25+, the `package-initialize' call is auto-added to the top of
;; init.el unless the user already has a commented or uncommented
;; `(package-initialize)' line present in their init.el.
;;   I call this function in setup-packages.el and so am keeping the
;; commented out version here so that package.el does not add it again.

;; Start `benchmark-init' as soon as possible
(require 'benchmark-init)

(eval-when-compile
  (require 'use-package)                ;Auto-requires `bind-key' too
  (setq use-package-always-ensure nil))
(require 'use-package-chords)

;; Enable `modi-mode' unless `disable-pkg-modi-mode' is set to `t' in
;; `setup-var-overrides.el'.
(when (not (bound-and-true-p disable-pkg-modi-mode))
  (require 'modi-mode))
(require 'temp-mode)

(require 'setup-paradox)
(require 'setup-region-bindings-mode)
(require 'setup-key-chord)
(require 'setup-hydra)
(require 'setup-tags)
;; End of basic requires

;; Set up the looks of emacs
(require 'setup-mode-line)
(require 'setup-visual)
(require 'setup-shackle)

;; Set up packages
(require 'setup-abbrev)
(require 'setup-ace-window)
(when (executable-find "ag")
  (require 'setup-ag))
(require 'setup-all)
(require 'setup-artist)
(require 'setup-auto-complete)
;; Wed Jun 10 16:10:59 EDT 2020 - kmodi
;; Disabling beacon-mode to see if that solves minor performance glitches
;; (require 'setup-beacon)
(require 'setup-bookmarks)
(require 'setup-buffer-move)
(require 'setup-calc)
(require 'setup-command-log-mode)
(require 'setup-counsel)
(require 'setup-de-ansify)
(require 'setup-deft)
(require 'setup-devdocs)
(require 'setup-dired)
(require 'setup-drag-stuff)
(require 'setup-elfeed)
(when (executable-find "tmux")
  (require 'setup-emamux))
(require 'setup-eww)
(require 'setup-el2markdown)
(require 'setup-engine-mode)
(require 'setup-expand-region)
;; Below will cause emacs to freeze on evaluating "(string-match-p "." nil)"
;; on emacs 25.1 or older.
;; http://debbugs.gnu.org/cgi/bugreport.cgi?bug=23949
(require 'setup-fci)
(require 'setup-fold)
(require 'setup-flycheck)
(require 'setup-gist)
(when (executable-find "git")
  (require 'setup-diff)
  (require 'setup-git-link)
  (require 'setup-git-timemachine)
  (require 'setup-magit))
(require 'setup-hardcore)
(require 'setup-header2)
(require 'setup-highlight)
(require 'setup-htmlize)
(when (executable-find "hugo")
  (require 'setup-hugo))
(require 'setup-hungry-delete)
(require 'setup-ibuffer)
(if (bound-and-true-p disable-pkg-ivy)
    (require 'setup-ido)
  (require 'setup-ivy))
(require 'setup-imenu-list)
(require 'setup-indent-guide)
(require 'setup-info)
(require 'setup-keyfreq)
(require 'setup-kurecolor)
(require 'setup-linum)
(require 'setup-manage-minor-mode)
(require 'setup-mastodon)
(require 'setup-multiple-cursors)
(require 'setup-neotree)
(require 'setup-news)
(require 'setup-nov)
(require 'setup-org)
(require 'setup-outshine)
(when (executable-find "p4")
  (require 'setup-p4))
(require 'setup-page-break-lines)
(require 'setup-pcache)
(require 'setup-pomodoro)
(require 'setup-poporg)
(with-eval-after-load 'setup-tags
  ;; Below causes `help-function-arglist' error on evaluating "(string-match-p "." nil)"
  ;; on emacs 25.1 or older.
  ;; http://debbugs.gnu.org/cgi/bugreport.cgi?bug=23949
  (require 'setup-projectile))
(require 'setup-rainbow-delimiters)
(require 'setup-rainbow-mode)
(when (executable-find "rg")
  (require 'setup-rg))
(require 'setup-server)
(require 'setup-smex)
(require 'setup-sx)
(require 'setup-term)
(require 'setup-tiny)
(require 'setup-tldr)
(require 'setup-undo-tree)
(require 'setup-weather)
(require 'setup-webpaste)
(require 'setup-which-func)
(require 'setup-which-key)
(require 'setup-wolfram)
(when (executable-find "wn")
  (require 'setup-wordnut))
(require 'setup-wrap-region)
(require 'setup-writegood)
(require 'setup-xkcd)
(require 'setup-yasnippet)

;; Languages
(require 'setup-conf)
(require 'setup-elisp)
(when (executable-find "go")
  (require 'setup-go))
(require 'setup-gujarati)
(require 'setup-latex)
(require 'setup-markdown)
(when (executable-find "matlab")
  (require 'setup-matlab))
(when (executable-find "nim")
  (require 'setup-nim))
(require 'setup-perl)
(require 'setup-python)
(require 'setup-shell)
(require 'setup-spice)
(when (executable-find "sml")
  (require 'setup-sml))
(require 'setup-tcl)
(require 'setup-verilog)
(require 'setup-web-mode)
(require 'setup-yaml-mode)

(>=e "25.1"
    nil       ; Emacs 25.1 has `M-.' bound to `xref-find-definitions' by default
                                        ; which works better than elisp-slime-nav
  (require 'setup-elisp-slime-nav))

;; Blend of other setup
(require 'setup-backup)
(require 'setup-compile)
(require 'setup-editing)
(require 'setup-image)
(require 'setup-launcher)
(require 'setup-mouse)
(require 'setup-navigation)
(require 'setup-pdf)
(require 'setup-print)
(require 'setup-registers)
(require 'setup-search)
(when (or (executable-find "aspell")
          (executable-find "hunspell"))
  (require 'setup-spell))
(require 'setup-toggles)
(require 'setup-unicode)
(require 'setup-windows-buffers)

;; Place `setup-work.el' with `(provide 'setup-work)' in `user-personal-directory'
(require 'setup-work nil :noerror)

;; Place `setup-personal.el' with `(provide 'setup-personal)' in `user-personal-directory'
(require 'setup-personal nil :noerror)

;; The `setup-misc' must be the last package to be required except for
;; `setup-desktop'.
(require 'setup-misc)

;; Delay desktop setup by a second.
;; - This speeds up emacs init, and
;; - Also (n)linum and other packages would already be loaded which the files
;;   being loaded from the saved desktop might need.
(use-package setup-desktop :defer 1)

(defun modi/font-check ()
  "Do font check, then remove self from `focus-in-hook'; need to run this just once."
  (require 'setup-font-check)
  (remove-hook 'focus-in-hook #'modi/font-check))
;; http://lists.gnu.org/archive/html/help-gnu-emacs/2016-05/msg00148.html
;; For non-daemon, regular emacs launches, the frame/fonts are loaded *before*
;; the emacs config is read.
;;
;; But when emacs is launched as a daemon (using emacsclient, the fonts are not
;; actually loaded until the point when the `after-make-frame-functions' hook is
;; run.
;;
;; But even at that point, the frame is not yet selected (for the daemon
;; case). Without a selected frame, the `find-font' will not work correctly!
;;
;; So we do the font check in `focus-in-hook' instead, by which time in the
;; emacs startup process, all of the below are true:
;;  - Fonts are loaded (in both daemon and non-daemon cases).
;;  - The frame is also selected, and so `find-font' calls work correctly.
(add-hook 'focus-in-hook #'modi/font-check)

(when (and (bound-and-true-p emacs-initialized)
           (featurep 'setup-visual))
  (funcall default-theme-fn)) ; defined in `setup-visual.el'

(setq emacs-initialized t)

(when modi/gc-cons-threshold--orig
  (run-with-idle-timer 5 nil (lambda () (setq gc-cons-threshold modi/gc-cons-threshold--orig))))