common/home/spacemacs/init.el

"Initialization:
This function is called at the very beginning of Spacemacs startup,
before layer configuration.
It should only modify the values of Spacemacs settings."
;; This setq-default sexp is an exhaustive list of all the supported
;; spacemacs settings.
(setq-default
	;; If non-nil then enable support for the portable dumper. You'll need
	;; to compile Emacs 27 from source following the instructions in file
	;; EXPERIMENTAL.org at to root of the git repository.
	;; (default nil)
	dotspacemacs-enable-emacs-pdumper nil

	;; Name of executable file pointing to emacs 27+. This executable must be
	;; in your PATH.
	;; (default "emacs")
	dotspacemacs-emacs-pdumper-executable-file "emacs"

	;; Name of the Spacemacs dump file. This is the file will be created by the
	;; portable dumper in the cache directory under dumps sub-directory.
	;; To load it when starting Emacs add the parameter `--dump-file'
	;; when invoking Emacs 27.1 executable on the command line, for instance:
	;;   ./emacs --dump-file=$HOME/.emacs.d/.cache/dumps/spacemacs-27.1.pdmp
	;; (default (format "spacemacs-%s.pdmp" emacs-version))
	dotspacemacs-emacs-dumper-dump-file (format "spacemacs-%s.pdmp" emacs-version)

	;; If non-nil ELPA repositories are contacted via HTTPS whenever it's
	;; possible. Set it to nil if you have no way to use HTTPS in your
	;; environment, otherwise it is strongly recommended to let it set to t.
	;; This variable has no effect if Emacs is launched with the parameter
	;; `--insecure' which forces the value of this variable to nil.
	;; (default t)
	dotspacemacs-elpa-https t

	;; Maximum allowed time in seconds to contact an ELPA repository.
	;; (default 5)
	dotspacemacs-elpa-timeout 5

	;; Set `gc-cons-threshold' and `gc-cons-percentage' when startup finishes.
	;; This is an advanced option and should not be changed unless you suspect
	;; performance issues due to garbage collection operations.
	;; (default '(100000000 0.1))
	dotspacemacs-gc-cons '(100000000 0.1)

	;; Set `read-process-output-max' when startup finishes.
	;; This defines how much data is read from a foreign process.
	;; Setting this >= 1 MB should increase performance for lsp servers
	;; in emacs 27.
	;; (default (* 1024 1024))
	dotspacemacs-read-process-output-max (* 1024 1024)

	;; If non-nil then Spacelpa repository is the primary source to install
	;; a locked version of packages. If nil then Spacemacs will install the
	;; latest version of packages from MELPA. Spacelpa is currently in
	;; experimental state please use only for testing purposes.
	;; (default nil)
	dotspacemacs-use-spacelpa nil

	;; If non-nil then verify the signature for downloaded Spacelpa archives.
	;; (default t)
	dotspacemacs-verify-spacelpa-archives t

	;; If non-nil then spacemacs will check for updates at startup
	;; when the current branch is not `develop'. Note that checking for
	;; new versions works via git commands, thus it calls GitHub services
	;; whenever you start Emacs. (default nil)
	dotspacemacs-check-for-update nil

	;; If non-nil, a form that evaluates to a package directory. For example, to
	;; use different package directories for different Emacs versions, set this
	;; to `emacs-version'. (default 'emacs-version)
	dotspacemacs-elpa-subdirectory 'emacs-version

	;; One of `vim', `emacs' or `hybrid'.
	;; `hybrid' is like `vim' except that `insert state' is replaced by the
	;; `hybrid state' with `emacs' key bindings. The value can also be a list
	;; with `:variables' keyword (similar to layers). Check the editing styles
	;; section of the documentation for details on available variables.
	;; (default 'vim)
	dotspacemacs-editing-style 'vim

	;; If non-nil show the version string in the Spacemacs buffer. It will
	;; appear as (spacemacs version)@(emacs version)
	;; (default t)
	dotspacemacs-startup-buffer-show-version t

	;; Specify the startup banner. Default value is `official', it displays
	;; the official spacemacs logo. An integer value is the index of text
	;; banner, `random' chooses a random text banner in `core/banners'
	;; directory. A string value must be a path to an image format supported
	;; by your Emacs build.
	;; If the value is nil then no banner is displayed. (default 'official)
	dotspacemacs-startup-banner 'random

	;; List of items to show in startup buffer or an association list of
	;; the form `(list-type . list-size)`. If nil then it is disabled.
	;; Possible values for list-type are:
	;; `recents' `recents-by-project' `bookmarks' `projects' `agenda' `todos'.
	;; List sizes may be nil, in which case
	;; `spacemacs-buffer-startup-lists-length' takes effect.
	;; The exceptional case is `recents-by-project', where list-type must be a
	;; pair of numbers, e.g. `(recents-by-project . (7 .  5))', where the first
	;; number is the project limit and the second the limit on the recent files
	;; within a project.
	dotspacemacs-startup-lists '((recents . 5)
	                             (projects . 7))

	;; True if the home buffer should respond to resize events. (default t)
	dotspacemacs-startup-buffer-responsive t

	;; Default major mode for a new empty buffer. Possible values are mode
	;; names such as `text-mode'; and `nil' to use Fundamental mode.
	;; (default `text-mode')
	dotspacemacs-new-empty-buffer-major-mode 'text-mode

	;; Default major mode of the scratch buffer (default `text-mode')
	dotspacemacs-scratch-mode 'text-mode

	;; If non-nil, *scratch* buffer will be persistent. Things you write down in
	;; *scratch* buffer will be saved and restored automatically.
	dotspacemacs-scratch-buffer-persistent nil

	;; If non-nil, `kill-buffer' on *scratch* buffer
	;; will bury it instead of killing.
	dotspacemacs-scratch-buffer-unkillable nil

	;; Initial message in the scratch buffer, such as "Welcome to Spacemacs!"
	;; (default nil)
	dotspacemacs-initial-scratch-message nil

	;; List of themes, the first of the list is loaded when spacemacs starts.
	;; Press `SPC T n' to cycle to the next theme in the list (works great
	;; with 2 themes variants, one dark and one light)
	dotspacemacs-themes '(noctilux
	                      occidental)

	;; Set the theme for the Spaceline. Supported themes are `spacemacs',
	;; `all-the-icons', `custom', `doom', `vim-powerline' and `vanilla'. The
	;; first three are spaceline themes. `doom' is the doom-emacs mode-line.
	;; `vanilla' is default Emacs mode-line. `custom' is a user defined themes,
	;; refer to the DOCUMENTATION.org for more info on how to create your own
	;; spaceline theme. Value can be a symbol or list with additional properties.
	;; (default '(spacemacs :separator wave :separator-scale 1.5))
	dotspacemacs-mode-line-theme '(spacemacs :separator wave :separator-scale 1.5)

	;; Default font or prioritized list of fonts. The `:size' can be specified as
	;; a non-negative integer (pixel size), or a floating-point (point size).
	;; Point size is recommended, because it's device independent. (default 10.0)
	dotspacemacs-default-font '("Source Code Pro"
	                            :size 14.0
	                            :weight normal
	                            :width normal)

	;; If non-nil the cursor color matches the state color in GUI Emacs.
	;; (default t)
	dotspacemacs-colorize-cursor-according-to-state t

	;; The leader key (default "SPC")
	dotspacemacs-leader-key "SPC"

	;; The key used for Emacs commands `M-x' (after pressing on the leader key).
	;; (default "SPC")
	dotspacemacs-emacs-command-key "SPC"

	;; The key used for Vim Ex commands (default ":")
	dotspacemacs-ex-command-key ":"

	;; The leader key accessible in `emacs state' and `insert state'
	;; (default "M-m")
	dotspacemacs-emacs-leader-key "M-m"

	;; Major mode leader key is a shortcut key which is the equivalent of
	;; pressing `<leader> m`. Set it to `nil` to disable it. (default ",")
	dotspacemacs-major-mode-leader-key ","

	;; Major mode leader key accessible in `emacs state' and `insert state'.
	;; (default "C-M-m" for terminal mode, "<M-return>" for GUI mode).
	;; Thus M-RET should work as leader key in both GUI and terminal modes.
	;; C-M-m also should work in terminal mode, but not in GUI mode.
	dotspacemacs-major-mode-emacs-leader-key (if window-system "<M-return>" "C-M-m")

	;; These variables control whether separate commands are bound in the GUI to
	;; the key pairs `C-i', `TAB' and `C-m', `RET'.
	;; Setting it to a non-nil value, allows for separate commands under `C-i'
	;; and TAB or `C-m' and `RET'.
	;; In the terminal, these pairs are generally indistinguishable, so this only
	;; works in the GUI. (default nil)
	dotspacemacs-distinguish-gui-tab nil

	;; Name of the default layout (default "Default")
	dotspacemacs-default-layout-name "Default"

	;; If non-nil the default layout name is displayed in the mode-line.
	;; (default nil)
	dotspacemacs-display-default-layout nil

	;; If non-nil then the last auto saved layouts are resumed automatically upon
	;; start. (default nil)
	dotspacemacs-auto-resume-layouts nil

	;; If non-nil, auto-generate layout name when creating new layouts. Only has
	;; effect when using the "jump to layout by number" commands. (default nil)
	dotspacemacs-auto-generate-layout-names nil

	;; Size (in MB) above which spacemacs will prompt to open the large file
	;; literally to avoid performance issues. Opening a file literally means that
	;; no major mode or minor modes are active. (default is 1)
	dotspacemacs-large-file-size 1

	;; Location where to auto-save files. Possible values are `original' to
	;; auto-save the file in-place, `cache' to auto-save the file to another
	;; file stored in the cache directory and `nil' to disable auto-saving.
	;; (default 'cache)
	dotspacemacs-auto-save-file-location 'cache

	;; Maximum number of rollback slots to keep in the cache. (default 5)
	dotspacemacs-max-rollback-slots 5

	;; If non-nil, the paste transient-state is enabled. While enabled, after you
	;; paste something, pressing `C-j' and `C-k' several times cycles through the
	;; elements in the `kill-ring'. (default nil)
	dotspacemacs-enable-paste-transient-state nil

	;; Which-key delay in seconds. The which-key buffer is the popup listing
	;; the commands bound to the current keystroke sequence. (default 0.4)
	dotspacemacs-which-key-delay 0.4

	;; Which-key frame position. Possible values are `right', `bottom' and
	;; `right-then-bottom'. right-then-bottom tries to display the frame to the
	;; right; if there is insufficient space it displays it at the bottom.
	;; (default 'bottom)
	dotspacemacs-which-key-position 'bottom

	;; Control where `switch-to-buffer' displays the buffer. If nil,
	;; `switch-to-buffer' displays the buffer in the current window even if
	;; another same-purpose window is available. If non-nil, `switch-to-buffer'
	;; displays the buffer in a same-purpose window even if the buffer can be
	;; displayed in the current window. (default nil)
	dotspacemacs-switch-to-buffer-prefers-purpose nil

	;; If non-nil a progress bar is displayed when spacemacs is loading. This
	;; may increase the boot time on some systems and emacs builds, set it to
	;; nil to boost the loading time. (default t)
	dotspacemacs-loading-progress-bar t

	;; If non-nil the frame is fullscreen when Emacs starts up. (default nil)
	;; (Emacs 24.4+ only)
	dotspacemacs-fullscreen-at-startup nil

	;; If non-nil `spacemacs/toggle-fullscreen' will not use native fullscreen.
	;; Use to disable fullscreen animations in OSX. (default nil)
	dotspacemacs-fullscreen-use-non-native nil

	;; If non-nil the frame is maximized when Emacs starts up.
	;; Takes effect only if `dotspacemacs-fullscreen-at-startup' is nil.
	;; (default nil) (Emacs 24.4+ only)
	dotspacemacs-maximized-at-startup nil

	;; If non-nil the frame is undecorated when Emacs starts up. Combine this
	;; variable with `dotspacemacs-maximized-at-startup' in OSX to obtain
	;; borderless fullscreen. (default nil)
	dotspacemacs-undecorated-at-startup nil

	;; A value from the range (0..100), in increasing opacity, which describes
	;; the transparency level of a frame when it's active or selected.
	;; Transparency can be toggled through `toggle-transparency'. (default 90)
	dotspacemacs-active-transparency 90

	;; A value from the range (0..100), in increasing opacity, which describes
	;; the transparency level of a frame when it's inactive or deselected.
	;; Transparency can be toggled through `toggle-transparency'. (default 90)
	dotspacemacs-inactive-transparency 80

	;; If non-nil show the titles of transient states. (default t)
	dotspacemacs-show-transient-state-title t

	;; If non-nil show the color guide hint for transient state keys. (default t)
	dotspacemacs-show-transient-state-color-guide t

	;; If non-nil unicode symbols are displayed in the mode line.
	;; If you use Emacs as a daemon and wants unicode characters only in GUI set
	;; the value to quoted `display-graphic-p'. (default t)
	dotspacemacs-mode-line-unicode-symbols t

	;; If non-nil smooth scrolling (native-scrolling) is enabled. Smooth
	;; scrolling overrides the default behavior of Emacs which recenters point
	;; when it reaches the top or bottom of the screen. (default t)
	dotspacemacs-smooth-scrolling t

	;; Control line numbers activation.
	;; If set to `t', `relative' or `visual' then line numbers are enabled in all
	;; `prog-mode' and `text-mode' derivatives. If set to `relative', line
	;; numbers are relative. If set to `visual', line numbers are also relative,
	;; but lines are only visual lines are counted. For example, folded lines
	;; will not be counted and wrapped lines are counted as multiple lines.
	;; This variable can also be set to a property list for finer control:
	;; '(:relative nil
	;;   :visual nil
	;;   :disabled-for-modes dired-mode
	;;                       doc-view-mode
	;;                       markdown-mode
	;;                       org-mode
	;;                       pdf-view-mode
	;;                       text-mode
	;;   :size-limit-kb 1000)
	;; When used in a plist, `visual' takes precedence over `relative'.
	;; (default nil)
	dotspacemacs-line-numbers '(:visual t
	                            :disabled-for-modes
	                            pdf-view-mode
	                            :size-limit-kb 1000)

	;; Code folding method. Possible values are `evil', `origami' and `vimish'.
	;; (default 'evil)
	dotspacemacs-folding-method 'evil

	;; If non-nil `smartparens-strict-mode' will be enabled in programming modes.
	;; (default nil)
	dotspacemacs-smartparens-strict-mode nil

	;; If non-nil pressing the closing parenthesis `)' key in insert mode passes
	;; over any automatically added closing parenthesis, bracket, quote, etc...
	;; This can be temporary disabled by pressing `C-q' before `)'. (default nil)
	dotspacemacs-smart-closing-parenthesis nil

	;; Select a scope to highlight delimiters. Possible values are `any',
	;; `current', `all' or `nil'. Default is `all' (highlight any scope and
	;; emphasis the current one). (default 'all)
	dotspacemacs-highlight-delimiters 'all

	;; If non-nil, start an Emacs server if one is not already running.
	;; (default nil)
	dotspacemacs-enable-server nil

	;; Set the emacs server socket location.
	;; If nil, uses whatever the Emacs default is, otherwise a directory path
	;; like \"~/.emacs.d/server\". It has no effect if
	;; `dotspacemacs-enable-server' is nil.
	;; (default nil)
	dotspacemacs-server-socket-dir nil

	;; If non-nil, advise quit functions to keep server open when quitting.
	;; (default nil)
	dotspacemacs-persistent-server nil

	;; List of search tool executable names. Spacemacs uses the first installed
	;; tool of the list. Supported tools are `rg', `ag', `pt', `ack' and `grep'.
	;; (default '("rg" "ag" "pt" "ack" "grep"))
	dotspacemacs-search-tools '("rg" "ag" "pt" "ack" "grep")

	;; Format specification for setting the frame title.
	;; %a - the `abbreviated-file-name', or `buffer-name'
	;; %t - `projectile-project-name'
	;; %I - `invocation-name'
	;; %S - `system-name'
	;; %U - contents of $USER
	;; %b - buffer name
	;; %f - visited file name
	;; %F - frame name
	;; %s - process status
	;; %p - percent of buffer above top of window, or Top, Bot or All
	;; %P - percent of buffer above bottom of window, perhaps plus Top, or Bot or All
	;; %m - mode name
	;; %n - Narrow if appropriate
	;; %z - mnemonics of buffer, terminal, and keyboard coding systems
	;; %Z - like %z, but including the end-of-line format
	;; (default "%I@%S")
	dotspacemacs-frame-title-format "%I@%S"

	;; Format specification for setting the icon title format
	;; (default nil - same as frame-title-format)
	dotspacemacs-icon-title-format nil

	;; Delete whitespace while saving buffer. Possible values are `all'
	;; to aggressively delete empty line and long sequences of whitespace,
	;; `trailing' to delete only the whitespace at end of lines, `changed' to
	;; delete only whitespace for changed lines or `nil' to disable cleanup.
	;; (default nil)
	dotspacemacs-whitespace-cleanup nil

	;; If non nil activate `clean-aindent-mode' which tries to correct
	;; virtual indentation of simple modes. This can interfer with mode specific
	;; indent handling like has been reported for `go-mode'.
	;; If it does deactivate it here.
	;; (default t)
	dotspacemacs-use-clean-aindent-mode t

	;; If non-nil shift your number row to match the entered keyboard layout
	;; (only in insert state). Currently supported keyboard layouts are:
	;; `qwerty-us', `qwertz-de' and `querty-ca-fr'.
	;; New layouts can be added in `spacemacs-editing' layer.
	;; (default nil)
	dotspacemacs-swap-number-row nil

	;; Either nil or a number of seconds. If non-nil zone out after the specified
	;; number of seconds. (default nil)
	dotspacemacs-zone-out-when-idle nil

	;; Run `spacemacs/prettify-org-buffer' when
	;; visiting README.org files of Spacemacs.
	;; (default nil)
	dotspacemacs-pretty-docs nil

	;; If nil the home buffer shows the full path of agenda items
	;; and todos. If non nil only the file name is shown.
	dotspacemacs-home-shorten-agenda-source nil)