Category Archives: emacs

Org Mode publishing workflow for Sketched Books collection

I want to publish things in chunks that are bigger and more logical than blog posts, so I’ve been experimenting with my ZIP/PDF/EPUB/MOBI workflow.

Org Mode, Calibre, and Vagrant are terrific tools. Org Mode lets me write easy-to-modify source that I can export to different formats, like HTML and LaTeX (with the Beamer package), which lets me use PdfLatex to convert to PDF. Calibre converts HTML to EPUB and MOBI. Since tools can be difficult to set up on Windows, I use Vagrant to set up a virtual machine running Linux and I share my working directory with it.

multiple-cursors was so useful when I was wrangling the directory listing into the right format for Org. I’m glad I learned how to use it!

Here’s a Makefile I put together that simplifies the process for me:

all: index.html sketched-books.epub ebook.pdf

	rm -f *.dvi *.log *.nav *.out *.tex *.snm *.toc

distclean: clean
	rm -f Sketched\ index.html *.epub *.pdf *.mobi

Sketched\ *.png index.html
	(cd ..; zip sketched-books/ sketched-books/* -i *.css -i *.png -i *.html)

	emacs --batch -l build.el -f org-html-export-to-html --kill
	cp index.html index.tmp
	sed -e "s/org-ul/org-ul small-block-grid-3/" -e 's/div id="content"/div id="content" class="columns"/' -e 's/class="status"/class="status columns"/' index.tmp > index.html
	rm -f index.html~ index.tmp

	emacs --batch -l build.el -f org-html-export-to-html --kill

	montage *Sketched*.png -geometry -30-30 -thumbnail x400 -tile 6x5 cover.png

sketched-books.epub: ebook.html
	ebook-convert ebook.html sketched-books.epub --cover cover.png --authors "Sacha Chua" --language "English" ebook.html
	ebook-convert ebook.html --cover cover.png --authors "Sacha Chua" --language "English"

	emacs --batch -l build.el -f org-beamer-export-to-latex --kill

ebook.pdf: ebook.tex
	pdflatex ebook.tex
	cp ebook.pdf sketched-books.pdf
	rm ebook.pdf

And here’s a very simple build.el:

(require 'package)
(require 'ox-beamer)
(setq org-html-validation-link nil)
(setq org-export-with-section-numbers nil)
(setq backup-directory-alist '(("." . nil)))

This assumes I’ve already set up the environment by installing the latest Org from MELPA.

You can check out the and I use, too.

I’m not quite sure about the MOBI output yet. I have to test it on a Kindle, or in the app on my tablet. Most of the things display fine on my computer, though. Hooray!

Neat, huh? I want to get into the habit of making and also making it easy for me to update these things. You can check out the results at .

Someday I might even figure out how to use the Gumroad API to publish updated resources automatically. Wouldn’t that be neat? In the meantime, I’ll just have to replace them myself.

I like giving people the ability to choose which files to download. If I get annoyed with replacing multiple files, though, I might change this to one large ZIP that has the images, PDF, EPUB, and MOBI.

View the source on Github

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 Hangout #3: Emacs can read your mind

We’ve been organizing these Emacs Hangouts as an informal way for folks to get together and swap tips/notes/questions. You can find the previous Hangouts at . In this hangout, we shared tips on Emacs configuration, literate programming, remote access, autocompletion, and web development. And then Jonathan Arkell blew our minds with, well, his mind, demonstrating how he got Mindwave working with Emacs and Org Mode. The next one is scheduled for Jan 9, 2015 (Friday) at 7 PM Toronto time (12 AM GMT) – . Want a different time? Feel free to set up an Emacs Hangout, or contact me ([email protected]) and we’ll coordinate something.

Approx. time Topic
0:08 describe-variable
0:12 cycle-spacing
0:14 quelpa, better-defaults
0:19 org-babel
0:24 noweb
0:27 Beamer, org-present
0:30 Emacsclient
0:32 TRAMP, vagrant, X11 forwarding, git
0:40 Evangelism, Emacs defensiveness
0:42 Code organization
0:47 Cask, Quelpa, el-get
0:54 paradox for listing packages
0:58 Helm, helm-git
1:02 Projectile
1:03 More helm, autocomplete
1:06 Autocomplete and company
1:16 Writing packages, flycheck
1:18 Moving to git, working on Emacs
1:22 Gnus, mu4e, notmuch
1:27 Eww, web browsing
1:28 Web dev tools: skewer-mode, slime, swank-js, web-mode
1:32 o-blog static site generator
1:38 orgaggregate
1:41 EEG data. Emacs can read your mind!

Chat, links:

me 8:07 PM Thanks!
Zachary Kanfer 8:10 PM A description of Emacs’s “describe variable” is here: Examining.html#Examining
JJ Asghar 8:11 PM zachary: thanks! wait wait wait, org-bable can take over your .emacs.d/*.el files?
me 8:18 PM JJ: Yeah, totally! It’s so useful.
JJ Asghar 8:19 PM i need to dig into that
Jacob MacDonald 8:19 PM
jay abber 8:23 PM Org mode has functionality for LaTeX/TeX it appears Am I wrong, any ppl here using Emacs for ReST or LaTeX??
jay abber 8:27 PM it is
Jacob MacDonald 8:27 PM I used the PDF export in Org for notes in a math class, since it exports LaTeX nicely.
jay abber 8:27 PM
me 8:27 PM I’ve been using Org to export ta LaTeX for Beamer output
jay abber 8:27 PM np
jay abber 8:28 PM yeaaah up yup
Jonathan Arkell 8:29 PM Time for a restart.
jay abber 8:29 PM I think it would nice to know who uses emacs mainly graphically or in a terminal?? me = lurker sorry
jay abber 8:30 PM im trying to use it more in a terminal but always go graphic
Jacob MacDonald 8:31 PM emacs –daemon; emacsclient -c
jay abber 8:31 PM yosmiate yosmite me homebrew
jay abber 8:31 PM 24.4
jay abber 8:32 PM I like that
Christopher Done 8:32 PM audio sounds very trippy
jay abber 8:32 PM w/daft punk poster rockiin
Jonathan Arkell 8:33 PM heh! It’s signed too.
JJ Asghar 8:34 PM Sorry guys I have to go! Thanks so much for this!
me 8:34 PM See you!
jay abber 8:34 PM peace or vnc but thats alot of overhead make sure you lock down you sshdconfig files with sane sec practice Emacs over TMUX?????
Christopher Done 8:38 PM unrelated, thought i’d share that =p
me 8:38 PM jay: Good suggestions. Want to speak up?
jay abber 8:38 PM lm lurking tonight
Jacob MacDonald 8:38 PM That audio .
jay abber 8:38 PM next one I promise His voice is awesome
Jacob MacDonald 8:40 PM
jay abber 8:40 PM Well for me sometimes I hate to confess but I just type vi/vim Noone I know uses any type of editor except word hahahaha
Jonathan Arkell 8:40 PM K, i am going to try audio again. Hopefully it will help Was that better?
jay abber 8:41 PM Can emacs do stuff like mpsyt or youtubedl somehow? yes!!!!
Jacob MacDonald 8:42 PM elisp interface to a shell script should work at a bare minimum.
Jacob MacDonald 8:42 PM I mean, there’s a web browser/mail reader/IRC client built in already…
me 8:42 PM I play MP3s in Emacs using emms and mplayer
jay abber 8:43 PM you know what
Jacob MacDonald 8:43 PM There was a Spotify plugin using dbus a while back, I believe.
jay abber 8:43 PM I think mysyt will be fine
Christopher Done 8:43 PM i was thinking of writing an emacs client to gmail via gmail’s API…
jay abber 8:43 PM its is a just a python script and mpv very suave and minimalist both python
Christopher Done 8:45 PM i stick all my own packages and ones i’m using in my repo as submodules
me 8:45 PM Christopher: Gmail client might be nice. I use IMAP occasionally, but I miss the priority inbox.
Christopher Done 8:46 PM yeah. i used offlineimap for a while with notmuch.el, that was pretty good. but i’m tempted by the idea of a “light-weight” approach replacing the browser with emacs, requesting emails/search on demand. might be nice their API looked super trivial to work with
Jonathan Arkell 8:48 PM Sorry Yea Is qwelpa (sp?) native emacs? (elisp) Stupid mic. works great for music.
Jacob MacDonald 8:50 PM lol
Jonathan Arkell 8:50 PM I do all my configuration and packages in Org mode
Christopher Done 8:50 PM i just use git for everything =p
me 8:51 PM Jonathan: Oh, maybe you’re doing some kind of audio processing that removes noise or other odd things? </wild guess>
Jonathan Arkell 8:51 PM Ironically not. I am Launching my DAW now to try and sort it ot.. heh err out … not ot…
jay abber 8:53 PM M=x list-packages now installing org-mode
me 8:53 PM Jay: If you’re installing Org from package, be sure to do it in an Emacs that has not loaded an Org file. because Org 8 (package) and Org 7 (which is built into Emacs) have incompatibilities
jay abber 8:55 PM hmm i installed 24.4 via homebrew
Jonathan Arkell 8:58 PM Okay, I am switching to the built in mic, so hopefully it works. Let me know…
Zachary Kanfer 9:11 PM
me 9:12 PM ?
jay abber 9:15 PM Im trying to become a ninja using the shell from w/in Emacs but sometimes I have issues with my ENV and PATH
Jonathan Arkell 9:15 PM OS?
Jacob MacDonald 9:15 PM It’s a thing.
Zachary Kanfer 9:15 PM
jay abber 9:15 PM Yosmite like pyenv or rubyenv in HomeBrew yes yes
Jacob MacDonald 9:16 PM Depends on if you use emacs like from brew or
jay abber 9:16 PM I got cha will find it
Jonathan Hill 9:17 PM great package for handling env variables in and so forth in OSX: exec-path-from-shell
jay abber 9:18 PM jonathan: thanks man
Jonathan Hill 9:18 PM just after (package-initialize), do (exec-path-from-initialize) oops (exec-path-from-shell-initialize)
jay abber 9:18 PM jh: ok
Jonathan Arkell 9:19 PM (setenv “PATH” (concat (getenv “HOME”) “/bin:” “/usr/local/bin:” (getenv “PATH”))) That’s waht i do… (add-to-list ‘exec-path “/usr/local/bin”)
me 9:21 PM
Jonathan Arkell 9:22 PM ERMERGERD +1 +1
Jacob MacDonald 9:32 PM Link please?
Bob Erb 9:33 PM What’s it called?
me 9:33 PM ?
Jacob MacDonald 9:33 PM Thanks.
me 9:34 PM – docs
jay abber 9:34 PM hey
jay abber 9:34 PM sorry I got side tracks I blog in my posts in REST for pelican static blog generator
jay abber 9:35 PM omg
me 9:35 PM Pretty!
jay abber 9:35 PM elisp for static blog oh know
John Wiegley 9:36 PM Hello
jay abber 9:36 PM you should never shown that to me
Jacob MacDonald 9:37 PM John, somehow I think I’ve seen you before…
me 9:40 PM
Jonathan Arkell 9:44 PM
jay abber 9:44 PM Hey I have to go now
John Wiegley 9:44 PM Bye Jay
me 9:44 PM See you! Thanks for joining!
jay abber 9:44 PM This was awesome I will be on the next one I have to study precalc
me 9:44 PM Yay!
jay abber 9:45 PM take care
me 9:49 PM Oooh… I wonder how to make coloured graphs like that too. Neat! I should practise using overlays…
Jonathan Arkell 9:53 PM Here is the Display Code: So wait… C-u C-u C-p takes you… uup?
me 9:59 PM Hah! UUP! Brilliant!
Bob Erb 10:01 PM You’re a treasure, Sacha!

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 configuration and use-package

Watching the second Experimental Emacs Hangout nudged me to improve how I use use-package in my Emacs configuration.

I had been using use-package‘s :init and :config keywords as a more readable and less-error-prone versions of eval-after-load. (Well, technically, :init happens before it’s loaded, and :config is evaluated after it fully loads.) I also used :bind for global keybindings.

I didn’t know about :ensure and :diminish. Adding :ensure let me get rid of my custom sacha/package-install function, and :diminish let me remove a few lines related to my modeline.

One of the benefits of sharing my configuration is that other people pick up ideas, and then I pick up more ideas from their ideas. I get an excuse to revisit packages that may have added features since the last time I checked them out. I learn from other people’s combinations and customizations.

There’s so much to learn about Emacs, even just in terms of the packages that I’ve already configured. Sometimes I start with just the basics and settle into a routine, forgetting that there are even more things I can do. Sometimes people make incompatible changes, and I have to figure out how to adapt. Sometimes packages become unmaintained, and eventually replacements emerge. Always, always, people write more code, add more features, extend Emacs to do more things. It’s never just about what new things I can do. It’s also about this community of people who tickle their brains by building cool stuff, who follow “What if?” to interesting places.

Anyway. :ensure and :diminish, and a few improvements to my config. (Also because I just switched to the 64-bit binary for Emacs 24.4, how exciting…)

Hat-tip to @gozes for nudging me to write about this – back in April!

Emacs Chat: Karl Voit

Org Mode, Memacs, lazyblorg, .emacs, Yasnippet, tags . , ,

Check out Karl’s notes for more details. (Or at least, you can check them out when his server is up again!)

Thanks, Karl!

Got an interesting Emacs workflow? Please share. =) Happy to bring on more people for Emacs Chats. Also, check out the upcoming Emacs Hangout on Dec 17 (8 PM Toronto)!

Check out TRANSCRIPT here!