Shell

Override the default behaviour of the Shell environment to integrate with Emacs.

Profile

Override the default shell profile under Bash.

Force colours

Manually set the terminal type to xterm-256color for better colours on TTY Emacs.

export TERM=xterm-256color

Setting up the $PATH

Ensure ~/.local/bin added to the $PATH environment variable.

export PATH=$PATH:~/.local/bin

Starting Emacs by default on TTY1

When launching into a new session on TTY1, if the display server is not running, run StartX¹. This will launch the window manager.

if [ -z "${DISPLAY}" ] && [ "${XDG_VTNR}" -eq 1 ]; then
    exec startx
fi

Creating symbolic links

The system looks for the default shell profile under Bash at ~/.profile. Creating a symbolic link from this location to our configuration will override the startup behaviour.

(dotfiles/symlink "~/.emacs.d/config/profile"
                  "~/.profile")

Methods

Define methods for interaction between Emacs and the underlying shell environment.

Run an external process

Define a method to run an external process, launching any application on a new process without interferring with Emacs.

(defun dotfiles/run (cmd)
  "Run an external process."
  (interactive (list (read-shell-command "λ ")))
  (start-process-shell-command cmd nil cmd))

Apply command to call process

Define a method to apply commands to the current call process, this is to avoid issues with hooks but can impact the performance of Emacs.

(defun dotfiles/run-in-background (cmd)
  (let ((command-parts (split-string cmd "[ ]+")))
    (apply #'call-process `(,(car command-parts) nil 0 nil ,@(cdr command-parts)))))

Keybindings

Place keybindings for executing shell commands behind SPC x:

Run shell commands with x
Run async shell commands with z

(dotfiles/leader
  "x" '(:ignore t :which-key "Run")
  "xx" '(dotfiles/run :which-key "Run")
  "xz" '(async-shell-command :which-key "Async"))

Footnotes

https://x.org

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