Emacs kaizen: ace-jump-zap lets you use C-u to zap to any character

This entry is part of 4 in the series Emacs Kaizen

I’m perpetually using M-z to zap-to-char and then typing the character back in, because I really should be using zap-up-to-char instead. But if I’m going to get the hang of fiddling with my muscle memory so that I do things the Right Way, I might as well use this opportunity to practise using ace-jump-zap instead. The ace-jump-zap-up-to-char-dwim and ace-jump-zap-to-char-dwim functions behave like their normal equivalents, but if you C-u them, you get ace-jump type behaviour allowing you to quickly zap to any character you see. And since I mentally think of M-z as not including the character, I may as well map it so that M-z behaves that way.

Now I just have to remember that C-u does cool stuff…

(use-package ace-jump-zap
  :ensure ace-jump-zap
  (("M-z" . ace-jump-zap-up-to-char-dwim)
   ("C-M-z" . ace-jump-zap-to-char-dwim)))

Emacs: M-y as helm-show-kill-ring

This entry is part 1 of 4 in the series Emacs Kaizen

After realizing that I barely scratched the surface of Helm’s awesomeness (really, I basically use it as an ido-vertical-mode), I made a concerted effort to explore more of the interesting things in the Helm toolkit. helm-show-kill-ring is one such thing. I’ve bound it to M-y, which I had previously configured to be browse-kill-ring, but helm-show-kill-ring is much cooler because it makes it easy to dynamically filter your kill ring. Also, Kcode>M-y works better for me than C-y does because I know when I want the last thing I killed, but going beyond that is a little annoying.

That said, browse-kill-ring does make it easy to edit a kill ring entry. Maybe I should learn how to modify Helm’s behaviour so that I can add an edit action. There’s already a delete action. Besides, I haven’t used that feature in browse-kill-ring yet, so I can probably get by even without it.

ido fans: you can use helm-show-kill-ring without activating helm-mode, if you want.

On a related note, I like how rebinding M-x (execute-extended-comand) to helm-M-x shows me keybindings as I search for commands. You do have to get used to the quirk of typing C-u and other prefixes after M-x instead of before, but I haven’t had a problem with this yet. This is mostly because I haven’t dug into just how many commands do awesome things when given a prefix argument. I know about using C-u C-c C-w (org-refile) to jump to places instead of refiling notes, but that’s about it. I haven’t gone anywhere close to C-u C-u. Does anyone have a favourite command they use that does really smart things when given that prefix? =)

This Helm intro has animated GIFs and a few other useful commands. Check it out!

Emacs kaizen: helm-swoop and editing

This entry is part 2 of 4 in the series Emacs Kaizen

Continuing on this quest to focus on one tiny little workflow change at a time, so that I can get even better at using Emacs…

One of those packages I installed but never got around to trying out was all, which lets you interactively edit all lines matching a given regular expression. It’s like an editable occur, sorta.

It turns out that helm-swoop lets you use C-c C-e to edit matching lines interactively (so you can use keyboard macros or replace-regexp or whatever). You can type C-x C-s to save it back to the buffer.

On a related note, I’m still tickled pink every time I use dired-toggle-read-only (C-x C-q) to make a Dired buffer editable so that I can batch-rename filenames.

Emacs kaizen: ace-isearch combines ace-jump-mode and helm-swoop

This entry is part 3 of 4 in the series Emacs Kaizen

I’m a fan of clever little things that change their behaviour depending on what you’re doing while letting you mentally think of it as just one function.

ace-isearch looks like it’ll be useful for collapsing three different functions into one mental thing in my head:

  • jumping to a specific character that I can see (ace-jump-mode)
  • searching through a buffer for a few characters (isearch)
  • doing helm-swoop to quickly preview and navigate through matching lines in a buffer

If you install the ace-isearch package and turn on global-ace-isearch-mode, then searching for a single character triggers ace-jump-mode, searching for less than 5 characters triggers isearch, and anything longer triggers helm-swoop-from-isearch. You can customize those thresholds, of course.