Category Archives: emacs

Python 3 shell in Emacs

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If you’d like to run a Python 3 shell within Emacs you could issue the following command:

C-u M-x run-python

It’ll then prompt you to confirm which Python version you’d want to run. You can just type 3 and click Enter again. If you use it a lot, however, it’s not going to be the most convenient of the solutions. You could automate the whole process by adding the following 2 lines to your ~/.emacs file:

(defun run-python3 () (interactive) (run-python "python3"))
(global-set-key [f5] 'run-python3)

The second line assigns a keybinding to the command. In the example above it is the F5 key.

emacs remember.el

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For quick jotting down one can use the remember.el module of emacs. Simply add the following to your ~/.emacs:

(org-remember-insinuate)
(setq org-directory “~/data/orgs/”)
(setq org-default-notes-file (concat org-directory “/notes.org”))
(define-key global-map “\C-cr” ‘org-remember)

Obviously you need to adjust the paths accordingly.  As you can see Ctrl-c r will bring up a remember window where you’ll be able to jot down ideas. As it automatically loads the org mode, you can make use of all its features while making a note. Once you’re done, simply press C-c C-c to save the note in the org directory (in my case it’s ~/data/orgs/notes.org). The entry will start with the date of note creation and the first line of the note as a kind of the title.

edit: I realise there’s so much more to ‘remember’ than I’ve posted here. I’ll look into it in the near future.

The emacs way: boxquote.el

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Finally I found a nice way of quoting in Emacs. It is particularly useful in gnus. The module in question is called boxquote and can be obtained from here.

It’ll draw a nice border around the quoted text:

 ,----
 | This is the quoted text.
 `----

That’s the relevant entry from .emacs:

(require 'boxquote)
(global-set-key [f7] 'boxquote-region)

(global-set-key (kbd "C-c q y")   'boxquote-yank)
(global-set-key (kbd "C-c q r")   'boxquote-region)
(global-set-key (kbd "C-c q u")   'boxquote-unbox-region)
(global-set-key (kbd "C-c q t")   'boxquote-title)
(global-set-key (kbd "C-c q i")   'boxquote-insert-file)
(global-set-key (kbd "C-c q k")   'boxquote-kill)
(global-set-key (kbd "C-c q s")   'boxquote-shell-command)

(global-set-key (kbd "C-c q b")   'boxquote-buffer)
(global-set-key (kbd "C-c q p")   'boxquote-paragraph)
(global-set-key (kbd "C-c q n")   'boxquote-narrow-to-boxquote)
(global-set-key (kbd "C-c q w")   'boxquote-where-is)
(global-set-key (kbd "C-c q d f") 'boxquote-describe-function)
(global-set-key (kbd "C-c q d k") 'boxquote-describe-key)
(global-set-key (kbd "C-c q d v") 'boxquote-describe-variable)

If you use org-mode with standard key bindings, you are quite likely to encounter problems
as C-c b is also a common mapping for org-iswitchb:

(define-key global-map "\C-cb" 'org-iswitchb)

I personally changed the boxquote mappings to C-c q, which semantically makes more sense to me anyway