User:Timothee Flutre/Notebook/Postdoc/2012/07/25: Difference between revisions

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(→‎About Emacs: add examples ELisp)
(→‎About Emacs: add tuto ENS)
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* '''Documentation''':
* '''Documentation''':
** official [https://www.gnu.org/software/emacs/manual/html_node/emacs/index.html manual] ([https://www.gnu.org/software/emacs/manual/html_node/eintr/index.html intro] to Emacs Lisp)
** official [https://www.gnu.org/software/emacs/manual/html_node/emacs/index.html manual] ([https://www.gnu.org/software/emacs/manual/html_node/eintr/index.html intro] to Emacs Lisp)
** I haven't found yet any good tutorial, outside of the official [https://www.gnu.org/software/emacs/tour/ tour]
** official [https://www.gnu.org/software/emacs/tour/ tour], [http://www.tuteurs.ens.fr/unix/editeurs/emacs.html tutorial] (in French)
** [http://www.emacswiki.org/ wiki] (with many tips)
** [http://www.emacswiki.org/ wiki] (with many tips)
** [https://github.com/vikasrawal/orgpaper/blob/master/orgpapers.org org tutorial]
** [https://github.com/vikasrawal/orgpaper/blob/master/orgpapers.org org tutorial]
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** one should see <code>4</code> in the mini-buffer
** one should see <code>4</code> in the mini-buffer
** do the same with <code>(concat "abc" "def")</code>
** do the same with <code>(concat "abc" "def")</code>
** here is an example of an [https://www.gnu.org/software/emacs/manual/html_node/eintr/Writing-Defuns.html#Writing-Defuns function] (interactive in this case)
** here is an example of a [https://www.gnu.org/software/emacs/manual/html_node/eintr/Writing-Defuns.html#Writing-Defuns function] (interactive in this case)


  (defun f (x y)
  (defun f (x y)

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About Emacs

  • Motivation: when analyzing data for any research project, it's essential to know well a good text editor. Indeed, it's very efficient to be able to program in several languages (eg. Python, C/C++, R), interact with the shell like in a terminal, manipulate data and plot exploratory analyzes in R, all this within the same editor! One such editor is Emacs, and is available on Linux, Mac OS and Windows. For Mac OS X users, I recommend this distribution.
  • Configuration: my own file ~/.emacs (versioned here):
  • Tips:
    • from the office computer (desktop), log interactively to a cluster node, launch emacs --daemon and keep the terminal open indefinitely; then access this session from any computer, e.g. a laptop, with emacsclient -t; and close it when needed via emacsclient -e "(kill-emacs)"
    • especially useful with PuTTY on Windows, launch emacs so that its window is the terminal itself, via emacs -nw
    • when updating org-mode, one may have to first comment all org-related lines in ~/.emacs, remove the dir ~/.emacs.d/elpa/org-*, re-open Emacs with option -Q, install the latest version of org-mode, close Emacs and re-open it without -Q, uncomment all org-related lines in ~/.emacs
  • Emacs Lisp: intro
    • go to the *scratch* buffer
    • write (+ 2 2)
    • put the cursor after the last parenthesis, and enter C-x C-e
    • one should see 4 in the mini-buffer
    • do the same with (concat "abc" "def")
    • here is an example of a function (interactive in this case)
(defun f (x y)
  "add"
  (interactive "nx=\nny=")
  (message "%i" (+ x y))
  )



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