Hi! My name is Michał Góral, I am software developer (currently at Nokia) and this is my personal website. You can read more about me on a separate page if you’re curious.

You can contact me by e-mail: dev@goral.net.pl. My PGP key fingerprint is: 0423 DE59 98D1 2C33 E599 CDCF E3DD DA4D C45F 58CB.

Changelog

Yaxo Bug

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Today, after at least 4 years of using yaxo, when fixing MIME types for directories, it occurred to me that having application/octet-stream for all files (and directories) without extensions might be actually a bug of yaxo rather than deficiency of QMimeDatabase, a Qt’s interface for MIME types.

Turns out, I understood what a local file is differently than Qt maintainers. QMimeDatabase::mimeTypeForUrl turns on deep file inspection only for local files, i.e. files which have a “file” scheme as per QUrl documentation. QUrl("foo.txt") doesn’t have a “file” scheme, but QUrl("file:foo.txt") does.

The meaning of relative/absolute URLs for QUrl with absolute file paths is as well different than my common sense, but this is another story.

Not Equal

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It took me way too long to figure out why {"PrivateKey": "abcde"} and {"PrivateKey", "abcde"} aren’t equal (hint: the latter one is set, not dictionary and their string representations differ with only one character).

Netia CGNAT

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Today I discovered that my ISP, Netia, switched my dynamic public IPv4 address to CGNAT. They did it a week ago or so without any prior notification and today was the first time since then that I tried to connect to the Wireguard server on my router.

Good thing I have Tailscale account and Tailscale doesn’t give a damn about CGNAT or firewall rules which ISP might implement. I like Wireguard more though, because it is simpler, fully self-hosted (sidenote: I’m aware about Headscale) and has nicer logo.

I wish more operators in Poland finally implemented IPv6 and be done with this IPv4 nonsense.

Neovim 0.11 Translations

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Neovim 0.11 disabled building translations by default which means that they’re no longer available in published artifacts as well. This caught me by a surprise when I tried to update my neovim-mg DEB package which I build for myself. To me this is accessibility issue for non-English speakers which I resolved by switching to manual building of Neovim:

make \
    CMAKE_BUILD_TYPE=Release \
    CMAKE_EXTRA_FLAGS='-DENABLE_TRANSLATIONS=ON'

Neovim team says that building translations was too time-consuming, but to be honest, I didn’t notice a big slowdown. Maybe it’s different when you build it many times a day on CI.

Creations

Synchronization

I synchronize a lot of things, each of them differently. Let's take a look how to write a simple Bash script which automates and parallels that.

Generacja wersji [PL]

Presentation of simple scripts and techniques allowing automatic generation of program's version.

Working on TWC Formatting

Formatting is one of these parts of TWC which I disliked the most. This has finally changed with release of TWC 0.9 and complete rewrite of formatting strings syntax.

Dotfiles [PL]

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Description of my old custom system of keeping and deploying dotfiles.

Commenter [PL]

Presentation of my program for toggling file comments depending on a list of keywords in a language similar to preprocesor.

Singleton w i3 [PL]

With markorapp, a script which I wrote, it's easy to create "singletons" in i3. Singletons are applications which should have only one instance, like a particular terminal.

Creations: Release Notes

kpsh 1.0

First stable release of kpsh

SubConvert 0.8.2 [PL]

I released a new version of SubConvert, a program to convert between various video subtitle formats.

Software Design

Computer Tools

Polish Git

How to force Git to speak English.

Describe Merges!

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Changelog is important, but we can simplify our lives and generate it, at least partially.

Kupfer [PL]

Kupfer is a program launcher written in Python.

Desktop Systems

State of Wayland [draft]

Current state of Wayland on desktop PCs, its quirks and workarounds

Xsession in Debian

Xsession is a default way of starting X sessions in Debian, but for some reason it remains a mystery for many people. Here I try to shed some light on it.

Git Credential Helper [PL]

Git has capabilities of writing custom credential helpers, which can fill passwords for accessing HTTP repos for us.

Zmiana monitorów w i3 [PL]

I did it! I forced a buggy xrandr to toggle screens and not kill X session!

Sysadmin

I Blocked Bots

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Every month bots eat my server's traffic, so I blocked them.

Job Queue in GWS

Examples of using job queues in GWS to run a lightweight CI/CD

Home Automation

C++

Najważniejszy const [PL]

There is one const usage in C++ which is a little different than the others. Andrei Alexandrescu called it the most important const.

std::move [draft]

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A short introduction to one of the most breakthrough features of C++11: rvalue references and move semantics.

Zwracanie wartości z funkcji [PL]

The article about Return Value Optimization - one of the most important features of C++ compilers.

Structured Bindings [PL]

Structured Bindings is a new way to decompose values returned from functions. It's similar to some other programming languages and greatly simplifies the code.

Problem dependant names [PL]

How C++ handles dependant names and why we must use typename keyword everywhere.

Name hiding [PL]

Name hiding is a surprising feature of C++. Here we'll learn a little more about it.

Polimorfizm [PL]

Introduction to C++ polymorhpism.

Urbana meeting [PL]

A short summary of C++ comitee meeting in Urbana-Champaign.

Python

Conversion Descriptor

Clever descriptor which automatically converts assigned values to the annotated type.

Cleanup

Application cleanup in Python inspired by weakref finalizer objects

Timeout Anything

Writing a generic function for timing out blocking operations

Naughty Python

A short thing about how Python prints its version number.

Zamykanie aplikacji PyQt [PL]

Graceful shutdown of PyQt applications might be harder than it looks like. This article presents the problem and a way to resolve it.

Bash

Process substitution [PL]

Process substitution in Bash is a powerful technique which allows us to redirect command's output to programs which only accept files.

Technology

Internet mobilny [PL]

Few quick thoughts about the mobile internet.

Computer Science

Matlab engine [PL]

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How to use Matlab Engine in C++

Software Freedom

Doom 3 GPL

Doom 3 source code has been released.

Philosophy

Life is Creating

To live our lifes and not merely exist, we, the humanity, must create

Politics

Invasion

Yesterday Russia invaded Ukraine.

Your Pain Is Bigger Than Mine

Even though I almost entirely stopped listening to it, I can't stay silent about recent events in Polish Radio Trójka.

Books

Cosmere [draft]

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Field notes about Cosmere.

Warbreaker

Review of Warbreaker by Brandon Sanderson

Reviews

Nikon D5300

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First thoughts about the new camera

SDF

SDF is a public access UNIX System which I recommend visiting sometimes.

Android Apps [PL] [rework]

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Reviews of some interesting Android Apps

Writing

Cross References in Notes

Notes should be pretty too, because why not? Here I'll show you my method of rendering them to HTML.

Notes on Notetaking

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Some things which I have learned over the years of notetaking.

I Want a To-Do App

It seems that we have a curse of abundance: so many to-do apps and methodologies that we can no longer choose one.

Personal

Migadu [in progress]

Trying something new for mail provider: a small company from Switzerland called Migadu.

PrintScreen

A short story about a prank which I unknowingly did to myself.

Wishlist

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Things which I wouldn't mind to receive

The Blackout

Yesterday early morning there was a blackout.

Personal: Site

Digital Garden

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Default chronological order of posts on this blog might not be the best.

Sidenotes [draft]

Implementation of sidenotes/margin notes on this blog

10 years

10 years of blogging on my own.

Blog changes

Introduction of new blog theme: Tale.

New Year's resolution

It's a little late to make a New Year's resolution, but I'll make one nevertheless.

Hugo [PL]

Switching to another static site generator: Hugo.

Parenthood

I have forked

What is a fork() and what PID it returns?

Double fork

Here we will learn about so-called double fork technique... More-less.

First Drawing

Przemek's first drawing presenting his whole family.

Practical

When I Die [draft]

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What will happen when I die - a plan for my family

Photography

Niesulice

Niesulice is a small village over Niesłysz lake.