My configuration for emacs

Installation

Emacs

The official installation guide for emacs can be found at https://www.gnu.org/software/emacs/download.html.

Note: windows user may find convenient to first install MSYS2 (https://www.msys2.org/) to have a linux-like interface, e.g. use pacman -S mingw-w64-x86_64-emacs to install emacs.

External dependencies

Linux: normally emacs should take care of installing all dependencies (otherwise you can do it yourself using list-packages). However you will need to install git yourself, e.g. using:

sudo apt update
sudo apt install git

as well as latex:

sudo apt-get install texlive-full
sudo apt-get install latexmk

and a pdf viewer like okular (https://okular.kde.org/) or sumatraPDF (https://www.sumatrapdfreader.org/free-pdf-reader).

Windows: you will need to install several additional software:

• miktex (https://miktex.org/) for latex
• latexmk via miktex (to automatically regenerate latex files)
• hunspell (https://sourceforge.net/projects/ezwinports/files/hunspell-1.3.2-3-w32-bin.zip/download) for spell checking
• perl (https://strawberryperl.com/): it is used by latexmk as well as some R packages
• git (https://gitforwindows.org/): it is used by magit.

Link emacs to the proposed configuration

Basic version

Download all files and put them in a directory called emacs-config.

Place this directory in the folder containing the .emacs file (~/. when doing C-x C-f).

Copy the following code at the begining of the .emacs file:

;;; load automatic config
(package-initialize)
(setq user-full-name "my name")
(setq user-mail-adress "[email protected]")
(setq path-emacs-config "~/emacs-config")
(setq path-emacs-snippet (concat path-emacs-config "/snippets"))

(load-file (expand-file-name "step01-load-packages.el" path-emacs-config))
(load-file (expand-file-name "step02-general-settings.el" path-emacs-config)) 
;;(load-file (expand-file-name "step03-email.el" path-emacs-config))
(load-file (expand-file-name "step04a-ess.el" path-emacs-config)) 
(load-file (expand-file-name "step04b-orgmode.el" path-emacs-config))
(load-file (expand-file-name "step04c-other-software.el" path-emacs-config))
(load-file (expand-file-name "step05-org-class.el" path-emacs-config))
(load-file (expand-file-name "step06-org-templates.el" path-emacs-config))
(load-file (expand-file-name "step07-header.el" path-emacs-config))
(load-file (expand-file-name "step08-folding.el" path-emacs-config))
(load-file (expand-file-name "step09-spellChecking.el" path-emacs-config))

(load-file (expand-file-name "FCT-dired.el" path-emacs-config))
(load-file (expand-file-name "FCT-editing.el" path-emacs-config))
(load-file (expand-file-name "FCT-file-management.el" path-emacs-config))
(load-file (expand-file-name "FCT-ess.el" path-emacs-config))
(load-file (expand-file-name "FCT-tex.el" path-emacs-config))
(load-file (expand-file-name "FCT-python.el" path-emacs-config))
(load-file (expand-file-name "FCT-org.el" path-emacs-config))
(load-file (expand-file-name "FCT-switch-to-OS-explorer.el" path-emacs-config))
(load-file (expand-file-name "FCT-superman.el" path-emacs-config))

(load-file (expand-file-name "step10-shorcuts.el" path-emacs-config))

In the first line, replace =”my name”= by your name. In the second line, replace =”[email protected]”= by your email adress. In the third line, check that =”~/emacs-config”= is where you have put emacs-config.

Customization

Set the font size to 120 by adding the following line

;;; Font size
(set-face-attribute 'default nil :height 120)

Display the file ~/todo.org when starting emacs instead of the default emacs startup screen:

;;; File at startup
(setq inhibit-startup-screen t) ;; dismiss startup screen
(find-file "~/todo.org")

Remove the tool bar:

;;; remove tool bar
(tool-bar-mode -1)

Transfert to the agenda elements in ~/todo.org:

;;; Agenda
(setq org-agenda-files (list "~/todo.org")

Modifications for Windows

Add to the .emacs file something like:

;;; modification for windows

;;;; shell
;; https://www.gnu.org/software/emacs/manual/html_node/efaq-w32/Using-shell.html
(setq explicit-shell-file-name "c:/cygwin64/bin/bash")
(setq TeX-shell "c:/cygwin64/bin/bash")
(setq org-export-allow-bind-keywords t)

;; FROM: https://www.emacswiki.org/emacs/NTEmacsWithCygwin
(let* ((cygwin-root "c:/cygwin64")
       (cygwin-bin (concat cygwin-root "/bin")))
  (when (and (eq 'windows-nt system-type)
             (file-readable-p cygwin-root))

    (setq exec-path (cons cygwin-bin exec-path))
    (setenv "PATH" (concat cygwin-bin ";" (getenv "PATH")))

    ;; By default use the Windows HOME.
    ;; Otherwise, uncomment below to set a HOME
    ;;      (setenv "HOME" (concat cygwin-root "/home/eric"))

    ;; NT-emacs assumes a Windows shell. Change to bash.
    (setq shell-file-name "bash")
    (setenv "SHELL" shell-file-name) 
    (setq explicit-shell-file-name shell-file-name) 

    ;; This removes unsightly ^M characters that would otherwise
    ;; appear in the output of java applications.
    (add-hook 'comint-output-filter-functions 'comint-strip-ctrl-m)))

;;;; path to external dependencies
(setq org-export-allow-bind-keywords t)

(setq TeX-view-program-list '(("SumatraPDF" "C://Users//hpl802//AppData//Local//SumatraPDF//SumatraPDF.exe %o")))
(setq TeX-view-program-selection '((output-pdf "SumatraPDF")
           			(output-dvi "Yap")))
(put 'overwrite-mode 'disabled nil)

;;;; update path variable
(setenv "PATH"
 	(concat
 	 "C:\\unison" ";"
 	 "C:\\hunspell" ";"
     "C:\\strawberry\\perl\\bin" ";"
 	 "C:\\Program Files\\SymatraPDF" ";" 	 
 	 "C:\\Program Files\\PuTTY" ";"
 	 "C:\\Program Files\\MiKTeX 2.9\\miktex\\bin\\x64\\" ";"
 	 (getenv "PATH")		;
 	 )
 	)

;;;; R software
(setq-default inferior-R-program-name "C:\\Program Files\\R\\R-4.1.1\\bin\\x64\\Rterm.exe")

;;;; spell checker
(setq ispell-program-name "hunspell")
(setq ispell-local-dictionary "en_GB")
;; (ispell-find-hunspell-dictionaries)

[Optional] Emails

WARNING: before trying anything, save all important emails outside the mailbox in case that the synchronisation does not work properly.

;;; send email

Receiving

Install offlineimap using sudo apt-get install offlineimap in the shell.

Then create a file ~/.offlineimaprc to indicate from which adress email should be imported:

[general]
accounts = Gmail
maxsyncaccounts = 3
pythonfile = ~/.offlineimap.py

[Account Gmail]
localrepository = localGmail
remoterepository = remoteGmail
autorefresh = 10

[Repository localGmail]
type = Maildir
localfolders = ~/Maildir/Gmail

[Repository remoteGmail]
type = Gmail
remoteuser = [email protected]
remotepasseval = get_password_emacs("imap.gmail.com", "myadress.com", "993")
sslcacertfile = /etc/ssl/certs/ca-certificates.crt
auth_mechanisms = PLAIN
folderfilter = lambda foldername: foldername not in ['[Gmail]/All Mail', '[Gmail]/Starred', '[Gmail]/Important']
realdelete = no

For the password, create a file .offlineimap.py containing:

#!/usr/bin/python
import re, os

def get_password_emacs(machine, login, port):
    s = "machine %s login %s port %s password ([^ ]*)\n" % (machine, login, port)
    p = re.compile(s)
    authinfo = os.popen("gpg --quiet --passphrase anotherPassword --decrypt ~/.authinfo.gpg").read()#
#    authinfo = os.popen("gpg --quiet --no-tty --decrypt ~/.authinfo.gpg").read()
    return p.search(authinfo).group(1)

and a file ~/.authinfo.gpg containing:

machine imap.gmail.com login [email protected] port 993 password myGmailPassword
machine smtp.gmail.com login [email protected] port 587 password myGmailPassword

Then run offlineimap.

Then install mu using in the shell:

• git clone https://github.com/djcb/mu.git
• sudo apt-get install libtool
• cd mu
• mu/$ autoreconf -i && ./configure && make

Normally mu index should run and import emails.

Finally add to the ~/.emacs:

;;;; receive email
;; location of the mails
(setq mu4e-maildir (expand-file-name "~/Maildir"))

;; mail box
(setq mu4e-account-alist
      '(("Gmail"
         ;; Under each account, set the account-specific variables you want.
         (mu4e-sent-messages-behavior delete)
         (mu4e-sent-folder "/Gmail/[Gmail].Sent Mail")
         (mu4e-drafts-folder "/Gmail/[Gmail].Drafts")
         (mu4e-trash-folder "/Gmail/[Gmail].Trash")
         (user-mail-address "[email protected]")
         (user-full-name "My Name"))
       	)
      )

;; setup some handy shortcuts
(setq mu4e-maildir-shortcuts
      '(("/Gmail/INBOX" . ?i)
	("/Gmail/ProjectA" . ?a))
)

;; signature
(setq
 mu4e-compose-signature
 (concat
  "My Name \n"
  "[email protected]\n")
 )

Sending

Create a file ~/.authinfo.gpg to indicate from which adress emails can be sent:

machine imap.gmail.com login [email protected] port 993 password myGmailPassword
machine smtp.gmail.com login [email protected] port 587 password myGmailPassword

and add in the .emacs:

;;;; send email
(require 'smtpmail)

(setq message-send-mail-function 'smtpmail-send-it
     starttls-use-gnutls t
     smtpmail-starttls-credentials
     '(("smtp.gmail.com" 587 nil nil))
     smtpmail-auth-credentials
     (expand-file-name "~/.authinfo.gpg")
     smtpmail-default-smtp-server "smtp.gmail.com"
     smtpmail-smtp-server "smtp.gmail.com"
     smtpmail-smtp-service 587
     smtpmail-debug-info t)

Key binding

See the file extendedCommands.org

Credit

A major part of configuration comes from emacs-genome (thanks thomas!!!). In particular all the functions contained in the file FCT-superman.el are directly copied from emacs-genome.