Idiomdrottning’s homepage

Emacs windows

I don’t like using any fancy packages that have it all figured out that I have to learn “on top” of Emacs. Just give me the basics and I have a few small tweaks on top of that.

DWM

First of all, I do sometimes like using several separate frames.

I run emacs --daemon so I can start new ones from the command line with alias ec="emacsclient -t" (opens in the same terminal) or with alias xec="emacsclient -c" (opens as a new X frame). ec is especially good when sshing in.

I also have emacsclient -c mapped to a global shortcut key so I can get to emacs even from other apps. I use dwm, so I have it mapped to s-super-e in dwm’s config.h.

I mean, I’m happy with dwm so I obviously don’t mind managing windows with it. I also use a web browser set to break out every tab into its own window for the same reason.

I close these pretty freely too, since I’m running the daemon I know that I can always reach emacs so there’s no fear of accidentally closing the last window.

god-mode override

For window splitting and deleting, I use the defaults (C-x 3, C-x 0 etc). I don’t know, I’ve just gotten used to them. I just started using this advice, to get two different buffers when I do split.

As recommended by god-mode, in addition to the defaults I have

(global-set-key (kbd "C-x C-1") 'delete-other-windows)
(global-set-key (kbd "C-x C-o") 'other-window)
(global-set-key (kbd "C-x C-2") 'split-window-vertically); or (split-window-func-with-other-buffer 'split-window-vertically)
(global-set-key (kbd "C-x C-3") 'split-window-horizontally); or (split-window-func-with-other-buffer 'split-window-horizontally)
(global-set-key (kbd "C-x C-0") 'delete-window)

just for when I’m in god-mode and I forget the space.

Finding that particular buffer

I don’t have anything special for finding and killing buffers, I find that C-x C-b, C-x b etc work well. After a while I got really sick of all the fancy icicle, iswitch stuff and just wanted to go back to the basics. The normal switch-to-buffer does what I want 99.99999% of the time. Yeah, I get that it has evolved since icicles and iswitch etc was invented.

Dwimmy C-tab

This is something I cooked up today and I’ll try to get used to it over the good old C-x o which I’ve been using for 20 years. I’m not gonna remove my old binding but if this shaves a couple of millis off every day it might be worth it.

(defun dwim-next-buffer ()
  (interactive)
  (if (= 1 (count-windows))
	  (switch-to-next-buffer)
	(other-window 1)))

(defun dwim-prev-buffer ()
  (interactive)
  (if (= 1 (count-windows))
	  (switch-to-prev-buffer)
	(other-window -1)))

(global-set-key (kbd "<C-tab>") 'dwim-next-buffer)
(global-set-key (if (featurep 'xemacs) (kbd "<C-iso-lefttab>") (kbd "<C-S-iso-lefttab>")) 'dwim-prev-buffer)

If I’m on a frame with multiple windows, C-tab and C-S-tab cycles backwards and forwards between those windows (without messing with what buffers those windows are showing). But when I’m on a frame with just a single window, C-tab and C-S-tab cycles between the buffers instead.

I also want this to override whatever org-mode was doing with C-tab, so:

(define-key org-mode-map (kbd "<C-tab>") nil)

The magical shell-key

I have a button that toggles the current window between a shell and itself. Now, I use C-z for this, I get that that overrides suspend-frame in the console (which I can remap, or call via M-x). But that’s why I chose that; I temporarily want to go from emacs to a shell and then back again.

(global-set-key [(control z)] 'shell)
(eval-after-load 'shell
  '(define-key shell-mode-map [(control z)] 'bury-buffer))

Also since I usually don’t use god-mode in notmuch, outside of composing, I’ve mapped some of my favorite god-mode keys specifically:

(require 'notmuch)
(define-key 'notmuch-show-mode-map (kbd "z") 'shell)
(define-key 'notmuch-search-mode-map (kbd "z") 'shell)
(define-key 'notmuch-search-mode-map (kbd "v") 'scroll-up-command)
(define-key 'notmuch-show-mode-map (kbd "v") 'notmuch-show-advance)
(define-key 'notmuch-show-mode-map (kbd "v") 'notmuch-show-advance)

When I’m writing scheme I want the magical shell key to instead toggle between the repl and the code:

(eval-after-load 'scheme
  '(define-key scheme-mode-map [(control z)] 'run-scheme))
(eval-after-load 'cmuscheme
  '(define-key inferior-scheme-mode-map [(control z)] 'bury-buffer))

Annoying splitting

Some of this, especially the shell-key (and its scheme counterpart), breaks down if emacs gets to split the window on its own. You can either prevent specific buffers from splitting the window with

(push (cons "\\*shell\\*" display-buffer--same-window-action) display-buffer-alist)
(push (cons "\\*scheme\\*" display-buffer--same-window-action) display-buffer-alist)
(push (cons "\\*Help\\*" display-buffer--same-window-action) display-buffer-alist)
(push (cons "\\*Buffer List\\*" display-buffer--same-window-action) display-buffer-alist)

Or, instead of doing that, you can make the frame “unsplittable”, which, weird name for it, because you can still use C-x 3 and C-x 2 etc.

(add-to-list 'default-frame-alist '(unsplittable . t))

I prefer the first, more specific solution because there are some things that get weird in unsplittable frames, like completion buffers for example.