Dzu's Blog (Einträge über emacs)

Using languagetool with a local server

Detlev Zundel — Thu, 03 Apr 2025 23:00:58 GMT

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Orgmode And Tikz Diagrams

Detlev Zundel — Thu, 20 Mar 2025 20:38:34 GMT

Of course it is easy to include a diagram with a post, but the standard procedure to create/edit the diagram with an external GUI tool does not resonate with me. Even back in my diploma thesis I fell in love with Donald Knuth's MetaPost system to describe diagrams in a declarative way and let the tool do the drawing.

For some LaTeX Beamer presentations I used ditaa in the meantime but inside a make flow that took care of the dependencies. The diagrams and the presentation were strictly separated. For the blog posts I did not yet have a good solution, until I switched to blogging in orgmode. Compared to ReST and Asciidoc posts, Emacs orgmode provides a much richer ecosystem with lots of hooks into other systems by means of the org-babel system.

So by switching the post source format, blogging in orgmode should actually hook into e.g. Graphviz out of the box. And indeed with a little fine tuning, this is an amazingly elegant way to include visualizations in the posts.

As org-mode (through exporting to LaTex Beamer) has also become the source format of my presentations, this new freedom easily extends into presentations and even regular PDF documents by exporting to LaTeX only. So the means shown here to produce diagrams for the blog are also usable when you want to generate Beamer presentations or LaTeX documents. As we will see, the choice of output formats is linked to the targeted use-case.

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Inline Diagrams in Orgmode

Detlev Zundel — Fri, 30 Sep 2022 19:38:34 GMT

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Blog internals (or learning new things to fix stuff)

Detlev Zundel — Thu, 01 Sep 2022 20:36:06 GMT

Recently I was made aware of a consequential GDPR ruling in Germany. The summary of the ruling is that a website owner was sentenced to pay a €100 fine to a visitor of his website because the website used Google hosted fonts. The visitor claimed that by loading the Google fonts, his IP address was exposed to the Google servers and this violates the GDPR.

Effectively this exposes every website in Germany using Google hosted web fonts to become the target of an €100 fine. At first, it seemed like a theoretic problem, but more recently it seems that people have turned this into a business-model (link is in German) and there now seem to be a wave of incidents based on this ruling. So it has become pretty urgent to fix this for web site owners in Germany.

Checking my Nikola generated site, I found that the zen theme that I use not only uses Google hosted fonts but also the Fontawesome icon set hosted on its own server. So I quickly decided that I need to switch those over to self-hosting before I get one of these lawyer mails. This blog post documents the things I learned on this journey which is still not over.

And I apologize in advance that this post has become rather large and very technical, but the things are really connected together so I decided not to split them out into smaller posts. I sincerely hope this was the right thing to do.

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Nikola Blog Posts with Emacs

Detlev Zundel — Sun, 31 Jan 2021 20:57:06 GMT

Emacs, Evince and SyncTeX Magic - Look Ma no Code!

Detlev Zundel — Sat, 30 Jan 2021 16:33:31 GMT

Emacs, Evince and SyncTeX Magic

Detlev Zundel — Tue, 06 Oct 2020 20:38:04 GMT

More Colors For My Blog

Detlev Zundel — Sun, 24 May 2020 20:13:06 GMT

Starting My Rust Journey

Detlev Zundel — Sun, 24 Feb 2019 20:38:22 GMT

With a few things coming together, I have finally decided to look into yet another programming language. On the one hand learning a new language is usually a good way to broaden the fundamenetal understanding of programming, but this time I do have a specific goal in mind that I want to reach.

Only recently I have been looking at various 32 bit Cortex-M ARM micro-controllers with the vendor provided C programming environments. Knowing modern programming languages like Haskell, OCaml or Go got me so frustrated with these environments that I decided to find a modern language also fit for this embedded space and no, I don't think Python is the answer to every problem just as Java wasn't. Ultimately, I would like to see a functional programming language in this space, but I am open to other approaches fitting the embedded space.

Being an FSF Emacs user for decades, I am also averse to these proprietary programming environments that may have some nice features but ultimately only try to lock the developer into a vendor controlled ecosystem. Usually they are all Eclipse based anyway but are incompatible with one another. It gives me the shivers installing the n-th copy of Eclipse for yet another Cortex-M based micro-controller and I really wonder how we ended up in this very frustrating assembly of walled in environments.

So this is the start of a small series of posts that evaluate how easy it will be to setup a programming environment on GNU/Linux for Rust based on GNU Emacs. Ultimately I want to target micro-controllers without a full GNU/Linux system running on them, so the aim is to also get a cross-compilation setup working.

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