Tootfinder

"50uL Shades of Kotlin: Why your numbers long for color"
https://flofriday.dev/posts/50-shades-of-kotlin/

Kreuzberg is a document intelligence framework that transforms unstructured documents into structured, machine-readable data. https://kreuzberg.dev/

Kreuzberg
A modern text extraction library supporting PDFs, images, office documents and more

A word or 300 about low efforts, work detachments, and how hobbies can make you feel better in the workplace.
Feel free to discuss.
#blogger

I've started a secret experiment
It's a one-off. No big picture. No 5-year plan. It's "secret" because I’m also learning to resist spilling everything for cheap dopamine hits (I am a sucker for "announcements").

jdk: Java SE Dev Kit dependencies (1.6.0.7)
A network of class dependencies within the JDK (Java SE Development Kit) 1.6.0.7 framework. Nodes represent classes and a directed edge indicates a dependency of one class on another.
This network has 6434 nodes and 150985 edges.
Tags: Technological, Software, Unweighted, Multigraph
https://

Game Pass is specifically designed for enshittification (obviously). https://www.ign.com/articles/in-the-wake-of-xbox-layoffs-founder-of-dishonored-and-prey-dev-arkane-slams-game-pas…

Tracker to keep an eye on the Global Sumud Flotilla
#flotilla #gaza

> [Miyamoto] views games as ‘products,’ not ‘works of art.’ I think [his] perspective is what leads to game development that’s more aligned with the user.
Interesting lens to view art vs product: my interpretation is that art is for the artist with emphasis on the act of creation whereas a product is for the end user and the emphasis on the final experience.

Efinix Trion T20 dev kit came in!

Do not Kick against the Pricks
https://stephenlf.dev/blog/do-not-kick-against-the-pricks/

#Go escape, or... //go:noescape
"meaning that the function has an implementation not written in Go"
very mysterious.
https://pkg.go.dev/cmd/compile
Today I learned a few first things about…

Running #Lando on GitHub Actions. #Laravel #PHP

«This is the original sin of software dev: it’s a pop culture where we’re trained to accept gossip as evidence. That’s fine if you’re debating largely meaningless details like “JavaScript, threat or menace?” but it’s very risky when the system in question is a psychological hazard built out of a Jenga tower of biases and Forer effects.»
https://www.baldurbjarnason.com/2025/trusting-your-own-judgement-on-ai/

I need to show progress for an action in a shell script I made for work. I am not a dev and I am not going to vibe code something to replace the script, so the "UI" is just the dialog utililty using ncurses. Sadly this does not have a spinner, which is what I actually want. I want this, as I do not know in advance how long extraction of archives it extracts will take. Dialog expects you to give it progress updates up to 100%.

from my link log —
A more perfect #[derive] for Rust.
https://esoterra.dev/blog/a-more-perfect-derive/
saved 2025-07-08 https:/…

A More Perfect Derive
A refresher on derive & perfect derive with some design options enumerated

Been playing this game I dig on the Android tablet called Dungeon Raid. It's a card flipping dungeon crawler (the dev calls it an 'adventure card roguelike') that's fairly easy to figure out-- lots of strategy and replayability. At first, you can start out playing as either a knight or a vampire, delving down, trying not to die of hunger.
If a relic in a game you can choose is a fried egg, you can probably assume it's a game for me.
There's also Linux, M…

#TIL about prek, a rewrite of pre-commit written in Rust. And as expected, it is extremely fast: #pre-comm…

🚀 #rJavaEnv #rstats (helper for 100 Java-dependent R packages) is about to get its biggest update yet. Just in time for ~10k downloads, Java 25 release, and its CRAN bday!
👉 Dev version:

Here's my first dev post of my new pet project #GitRaven
https://blog.suryatejak.in/gitraven-how-to-use-qtreeview-with-a-custom-model-class…

I’ve been using #Secureblue

If you want to try running Progeny Debian 1.0 under qemu:
qemu-system-i386 -cpu pentium -m 256M -boot c -vga std -hda hda.img -serial mon:stdio -cdrom ./installation.iso
-X server: xserver-xfree86
-card type: VESA
-res: 800x600
-depth: 8bit
-mouse: ImPS/2
-mouse dev: /dev/psaux

Vieb - Vim bindings for the web by design
Vieb is the Vim Inspired Electron Browser
✏️ #vim #web

Oh, the arguments we had! There was a marketing person — quite a good one, and a good person too — who just couldn’t see it, who fought the dev team tooth and nail on this. She finally relented when @… wrote a brief positive plug for our app, and made her realize that the landscape had changed and her J2ME-world design instincts just didn’t work in this new iPhone market.
(I’m not sure that company ever really made the shift. They struggled with and eventually dropped their general consumer app, and concentrated quite successfully on some pro markets where features ruled all.)
4/

⚠️Das Osnabrücker Paradoxon: Eine Analyse des blockierten Radentscheids und der Politik der #Verkehrswende
Zitat:
Die am häufigsten genannte Begründung ist „Platzmangel“. Dies ist keine Nebensächlichkeit, sondern der Kern des Problems: Die Stadt weigert sich, den Raum vom Autoverkehr umzuverteilen, was die eigentliche Forderung des Radentscheids war.
👇🏻

#UX designer: Carousels are bad from a usability perspective
Web dev: We have recreated the carousel from the classic research paper "don't use carousels" entirely in #CSS

Carousels with CSS  |  Blog  |  Chrome for Developers
Support scroll experiences with navigation buttons and markers with just a few lines of CSS.

"Open Bus Behavior and 65816 Memory Addressing"
https://jsgroth.dev/blog/posts/dkc2-open-bus/

Medvedev accuses Finland of planning an attack on Russia, citing NATO buildup: https://benborges.xyz/2025/09/08/medvedev-accuses-finland-of-planning.html

Mass Spectrum of Heavy Mesons using WKB Approximation
Bhaskar Jyoti Hazarika, Tanmay Dev
https://arxiv.org/abs/2508.06102 https://arxiv.org/pdf/2508.06102

Mass Spectrum of Heavy Mesons using WKB Approximation
In this study, we analyze the bound-state energy spectrum of quark-antiquark systems using the semiclassical WKB approximation. We consider the Cornell potential, which combines a linear confinement term with a Coulombic interaction, and perform a Taylor series expansion around an appropriately chosen point $r_{0}$ to simplify the potential near the classical turning points. This expansion enables an analytic treatment of the Schrödinger equation within the leading-order WKB framework. The res…

from my link log —
How Google Chrome V8 made JSON.stringify more than twice as fast.
https://v8.dev/blog/json-stringify
saved 2025-08-04 https://

Great article by Michal Ganzarcik for Shiftmag explaining the nuances of "Just say no" in a career space (Software Development theme, but I believe it applies to work in general).
I especially love the last line under "What's the solution?":
> **Don’t reward or idolize overwork.** Encourage a culture that values balance and sustainable effort over relentless hustle.

Google is getting serious about dev tooling for web apps
— their new "Firebase Studio" is going to transform web app development.
It's a modern IDE in the cloud, packed with AI features.
Loads your projects from GitHub and installs dependencies instantly, without local downloads.
Not surprising from Google, with their hatred for local desktop apps

@… @… I’d also point you to https://bsky.app/profile/11ty.dev/po…

Jetzt mag ich Steve Martin noch etwas mehr:
https://www.newyorker.com/m…

Symmetry-required Orbital Selectivity in Monolayer FeSe
Merc\`e Roig, Qiang Zou, Basu Dev Oli, Tatsuya Shishidou, Yue Yu, Huimin Zhang, Daniel F. Agterberg, Lian Li, Michael Weinert
https://arxiv.org/abs/2509.06180

Symmetry-required Orbital Selectivity in Monolayer FeSe
Orbital-selective correlations have been observed to play an important role in Fe-based superconductors. Here, in contrast to previous site-local Mott transition-based origins, we present a band-theory-based mechanism for orbital-selective physics in monolayer FeSe, for which only electron pockets appear. Underlying our mechanism is our density functional theory (DFT)-based observation that, for the electron pockets, antiferromagnetic fluctuations are strongly coupled to electrons in $x^2-y^2$ …

This is what I got from thanks.dev’s Ali and it tracks with GitHub’s reaction in the maintainer community.
@… https://piaille.fr/@ewjoachim/114816028154436161

W końcu odkryłem, jak uruchomić poprawnie powłokę z kontenera Dockera, i dałem instrukcje, jak powtórzyć problem na #Gentoo. I okazało się to zaskakująco proste:
https://github.com/narwhals-d…

#Python Friday #295: A Simple Strategy to Tackle Errors
https://pythonfriday.dev/2025/09/295-a-simple-strategy-to-tackle-errors/

#295: A Simple Strategy to Tackle Errors - Python Friday
None

Oh my word, what the hell are we doing? #libre

https://blog.danielh.cc/blog/passwords
“Please stop”
We replaced passwords with something worse

Next Sunday, I’ll share an update on how secureblue is performing on my Lenovo desktop and talk about my daily experience using it.
#secureblue

Because it is inevitable that they are going to ram Wayland down our throats whether we want it or not, I have spent the evening working on some glue to launch XScreenSavers after an idle period. (Not locking, just demos.)
XScreenSaver accepts -activate and -deactivate commands, so I'm just watching for idle and running those commands in response. The idle logic works well (but requires privileged access to /dev/input/event* devices).
What has cost me most of the evening is p…

The downfall of YouTube needs to be studied.
I noticed this in a Japanese travel vlog. I much prefer having Japanese audio than poorly AI-dubbed nonsense. #noxp
https://mk.absturztau.be/notes/acc8lcu

halva :verified_gay: (@halva)
what the FUCK do you mean there's no way to turn this off (📎1) RN: KILL all monolinguals in software dev

#MastoAdmin PSA: I’ve been noticing many posts like this one below going around Fedi lately, and I suspect it may be a type of scam trying to promote that “global voice” account. https://social.boger.dev/@J/1151158024

That's kind of neat.
#CSS #Glass

This CLI-tool diffs two Keepass (.kdbx) files and prints their differences.
https://keepass-diff.narigo.dev/

Exploring Empathy in Software Engineering: Insights from a Grey Literature Analysis of Practitioners' Perspectives
Lidiany Cerqueira, Jo\~ao Pedro Bastos, Danilo Neves, Glauco Carneiro, Rodrigo Sp\'inola, S\'avio Freire, Jos\'e Amancio Macedo Santos, Manoel Mendon\c{c}a
https://arxiv.org/abs/2507.05325

Exploring Empathy in Software Engineering: Insights from a Grey Literature Analysis of Practitioners' Perspectives
Context. Empathy, a key social skill, is essential for communication and collaboration in SE but remains an under-researched topic. Aims. This study investigates empathy in SE from practitioners' perspectives, aiming to characterize its meaning, identify barriers, discuss practices to overcome them, and explore its effects. Method. A qualitative content analysis was conducted on 55 web articles from DEV and Medium, two communities widely used by practitioners. To strengthen our findings, we con…

Saying #NO is not a free action in the world of #softwareengineering
https://sh…

Early sneak peek of #WIP composer UI relayout.
(still on my local dev, not dev site)
#PhanpySocialDev #design

Impostor Among $\nu$s: Dark Radiation Masquerading as Self-Interacting Neutrinos
Anirban Das, P. S. Bhupal Dev, Christina Gao, Subhajit Ghosh, Taegyun Kim
https://arxiv.org/abs/2506.08085

Impostor Among $ν$s: Dark Radiation Masquerading as Self-Interacting Neutrinos
Multiple cosmological observations hint at neutrino self-interactions beyond the Standard Model, yet such interactions face severe constraints from terrestrial experiments. We resolve this tension by introducing a model where active neutrinos resonantly convert to self-interacting dark radiation after BBN but before CMB epoch. This exploits the fact that cosmological observables cannot distinguish between neutrinos and dark radiation with the same abundance and free-streaming properties. Our me…

The birth of pro-gaming was a fun moment; its continued existence is a problem.
This shit wouldn't exist if cheating would get you at most bragging rights, instead of millions in sponsorships and ads revenue.
https://arstechnica.com/gaming/2…

Battlefield 6 dev apologizes for requiring Secure Boot to power anti-cheat tools
Amid player complaints, EA says 330,000 cheaters were stopped in beta’s first two days.

From my LinkedIn post: “Telling your dev team to use AI coding tools is like telling your 2010 ops team to use AWS. They didn’t know how to code, they were ticket and click-it VMware people… developers who don’t have product management mindset or have never managed a dev team will fail by trying to micromanage the output of the tool rather than specifying the outcome of the product and managing the agent team to deliver that outcome.”

Back in 2010 when we first started using AWS to run Netflix, the AWS services were very incomplete, somewhat unreliable, had scaling issues, but were super fast to provision compared to filing… | Adrian Cockcroft
Back in 2010 when we first started using AWS to run Netflix, the AWS services were very incomplete, somewhat unreliable, had scaling issues, but were super fast to provision compared to filing tickets and waiting for data center ops teams to do what we need. We worked around the issues, built a new cloud native developer driven architecture and scaled Netflix at speed. At the time many people said we were crazy to run a large enterprise on cloud and would be back in datacenters when it failed. …

from my link log —
Default musl allocator considered harmful to performance.
https://nickb.dev/blog/default-musl-allocator-considered-harmful-to-performance/
saved 2025-08-21

Default musl allocator considered harmful (to performance)
In a real world benchmark, the default musl allocator caused a 7x slowdown compared to other allocators. I recommend all Rust projects immediately swap to a different allocator in a musl environment.

📄 #MATE and #i3 | Matt Greer
https://www.mattgreer.dev/blog/mate-and-i3/
How to use i3 wi…

took a long time, but I’ve finally retired the last of my “active” .io domains — a process I’ve wanted to finalize for *years.*
(11ty.io is still redirecting but very few folks use it any more, leaving room to hopefully disable it entirely https://www.11ty.dev/blog/moving-house/)

So @… wrote about using assembler in @…:

Writing Inline Assembly in the Crystal Programming Language
Introduction When you want to make your code run significantly faster, or just want to...

One is with dev-require while the other is without
#php #docker #oci

This is lovely, SwiftUI for Windows and Linux:
https://swiftcrossui.dev

thanks everyone for impromptu donations, all is good again, that was a bunch of pleasant emails to wake up to 🙏❤️
it looks like that the refunds were caused by GitHub, NOT Thanks.dev. They apparently double-charged them first & then screwed up the refunds: {{ COPILOT_JOKE }}
Original warning stands: check your balances! Ali mentioned GHS refunded some people more than they ever got – so make sure to reach out to GHS if something is wonky.

I love everything about this video.
https://www.youtube.com/watch?v=qy_9w_c2ub0

Pressure induced ferromagnetic to antiferromagnetic phase transition in transition metal chalcogenide Cr$_{3}$Te$_4$
Asish Kumar Mishra, Souvick Chakraborty, Bidisha Mukherjee, Mrinmay Sahu, Suvashree Mukherjee, Shubham Purwar, Harekrishna Bhunia, S. Thirupathaiah, Peter Liermann, Satyabrata Raj, Goutam Dev Mukherjee
https://arx…

Pressure induced ferromagnetic to antiferromagnetic phase transition in transition metal chalcogenide Cr$_{3}$Te$_4$
We have carried out a detailed high-pressure investigation on the strongly correlated transition metal chalcogenide $Cr_{3}Te_4$ using Raman spectroscopy and XRD, which is ferromagnetic and metallic at ambient conditions. We find that the monoclinic structure remains stable up to 30 GPa, the highest pressure studied. The Cr-Te bond length and octahedral volume decrease drastically up to 7.6 GPa pressure. The $A_{1g}$ Raman mode shows a red shift up to 7.6 GPa, and the $E_g$ Raman mode shows a s…

“Measuring the Impact of Early-2025 AI on Experienced Open-Source Developer Productivity”
https://metr.org/blog/2025-07-10-early-2025-ai-experienced-os-dev-study/
50 page PDF:

Measuring the Impact of Early-2025 AI on Experienced Open-Source Developer Productivity

Parenting can be tough. That's why shows like Adolescence are worth watching, because watching something difficult is better than dealing with nightmare scenarios in real life.
https://arnel.bearblog.dev/adolescence-2025/

Adolescence: Healthy dose of fear for better parenting
I watched a show called Adolescence. It made me want to puke and hug my child at the same time, preferably not to puke on her

Effect of higher-order interactions on tipping cascades on complex networks
Richita Ghosh, Manish Dev Shrimali
https://arxiv.org/abs/2509.07802 https://arx…

Effect of higher-order interactions on tipping cascades on complex networks
Tipping points are critical thresholds of parameters where tiny perturbations can lead to abrupt and large qualitative changes in the systems. Many real-world systems that exhibit tipping behavior can be represented as networks of interacting multistable units, such as vegetation patches or infrastructure networks, undergoing both pairwise and higher-order interactions. In this article, we explore how higher-order interactions shape the dynamics of tipping cascades in a conceptual system with t…

@… I'm a hobbyist game dev sort of (you asked for DMas for an article). Not many finished projects, but some significant stuff that's demoable & a jam game or two here or there. Best demo right now is probably:
https://cs.wellesley.edu/~pmwh/chlorophyll
I'm a college CS instructor for my day job in case that's relevant.

Wow! The latest go blog has an excellent writeup explaining a test/synctest feature.
Testing Time (and other asyncronicities) - The Go Programming Language
#go

Testing Time (and other asynchronicities) - The Go Programming Language
A discussion of testing asyncronous code and an exploration of the `testing/synctest` package. Based on the GopherCon Europe 2025 talk with the same title.

🗡️ 10 Things We Learned From The New Assassin’s Creed Shadows Developer AMA
https://kotaku.com/10-things-assasins-creed-shadows-dev-ama-ubisoft-parkour-isu-lore-2000617244

Everything Important From The Assassin's Creed Shadows AMA
We got information about future AC games, confirmation on some lore questions, and some bad news for fans of educational modes

Just to clarify, are you envisioning something like PayPal, where creators can receive direct payments from their supporters?
Or is it more like a system where users can pay to boost posts so they appear more prominently in others’ feeds?
@…

https://github.com/web-infra-dev/rslint
... written in Go and crabs everywhere ...
this is so weird lol

GitHub - web-infra-dev/rslint: 🚀 Go Faster. Go Typed
🚀 Go Faster. Go Typed. Contribute to web-infra-dev/rslint development by creating an account on GitHub.

"Creating the longest possible Ski Jump in The Games: Winter Challenge"
https://mrwint.github.io/winter/writeup/writeup2.html

Was it you, @…, who mentioned #Beszel (https://beszel.dev) as a monitoring solution?…

»Crate Layout Best Practices: lib.rs, mod.rs, and src/bin«
Slowly, slowly, I'm learning what Rust uses for what in its coding.
🦀 https://dev.to/sgchris/crate-layout-best-practices-librs-modrs-and-srcbin-4abd

Crate Layout Best Practices: lib.rs, mod.rs, and src/bin
Crate Layout Best Practices: lib.rs, mod.rs, and src/bin Rust has rapidly become one of...

Jakiś czas temu, zainspirowany #Fedorą, wyodrębniłem paczki .whl z Pythonowego ensurepip w #Gentoo (właśnie sprawdziłem — "jakiś czas" to 3 lata). Umożliwiło to nam aktualizowanie ich razem z paczkami pip i setuptools, dzięki czemu nowe środowiska wirtualne otrzymują najnowszą dostępną wersję, a …

Well this seems bad...
https://www.aikido.dev/blog/popular-nx-packages-compromised-on-npm

Popular nx packages compromised on npm
The popular nx package on npm was compromised, and stolen data was published on GitHub publicly

I’m going to let the domain for an old 11-year-old side project expire but interested folks can still find the site at https://fontfamily.zachleat.dev
Here was the original launch blog post:

from my link log —
Golang's race detector has a mutex blind spot.
https://doublefree.dev/go-race-mutex-blindspot/
saved 2025-07-31

Go's race detector has a mutex blind spot
Go's data race detector can miss possible races in executed code when using mutexes

The Ultimate Guide to #Git Branching Strategies
https://blog.prateekjain.dev/the-ultimate-guide-to-git-branching-…

This took quite a while to experiment, but now that it kinda works, feels pretty cool.
- Still experimental on my local machine (not on dev site)
- Replies are segmented between edit time slots, idea from X https://mastodon.social/@cheeaun/114996911713894433
- Older …

I used to drink 8-9 coffees per day, five of which were before noon. I didn't have a problem drinking a coffee late in the evening. I thought to myself, if I can fall asleep, there's no problem.
https://arnel.bearblog.dev/one-coffee/

Why I Started Drinking Only One Coffee Per Day
A post about coffee, pooping, and napping.

#Python Friday #290: Record Audio With #PyAudio
https://pythonfriday.dev/2025/08/290-r

#290: Record Audio With PyAudio - Python Friday
None

@… I'm here for the really important questions!
Does your T-Shirt only say "capitalism" or is there more text at the bottom?

@… Maybe https://github.com/c-base/fake-x1c can help with the different subnet issue.

Need to connect two devices? Try a dumb pipe
https://www.dumbpipe.dev/

The more I listen to it, the more I like it: #PublicEnemy

Public Enemy dropped a new bomb... without announcement
"Time moves on, but the clock remains!"

from my link log —
Optimizing with novel calendrical algorithms.
https://jhpratt.dev/blog/optimizing-with-novel-calendrical-algorithms/
saved 2025-05-15

Discover great opportunities to become a #CloudNative #contributor
https://clotributor.dev/

This is how I fell in love with Bad Religion: #Blogging

How I Started Believing in Bad Religion
For almost a decade, after their song You, made me fall in love with punk rock, I hated the band called Bad Religion. And then they turned out to be one of my favorites ever.

Exploring Scalar Leptoquarks at Muon Collider via Indirect Signatures and Right-Handed Neutrino-Assisted Decays
Subham Saha, Arvind Bhaskar, P. S. Bhupal Dev, Manimala Mitra
https://arxiv.org/abs/2509.04579

Exploring Scalar Leptoquarks at Muon Collider via Indirect Signatures and Right-Handed Neutrino-Assisted Decays
We explore the discovery prospects of the scalar leptoquark doublet $\widetilde{R}_{2}({3},{2},1/6)$ at a future high-energy muon collider, considering both direct and indirect search strategies. For indirect search, we probe the relevant Yukawa couplings by analyzing the dijet final state via virtual exchange of the leptoquark. Even with a sub-$\mathcal{O}(1)$ Yukawa coupling, we achieve a 5$σ$ sensitivity up to leptoquark mass $ \sim 4$ TeV ($7$ TeV) at $\sqrt{s}=5, (10)$ TeV center-of-mass …

#Python Friday #294: Callable Classes in Python
https://pythonfriday.dev/2025/08/294-callable-classes-in-python/

#294: Callable Classes in Python - Python Friday
None

»Ab 2026 ist es vorbei mit Androids Offenheit - Ausweispflicht für #Dev's:
Die offene Natur von Android war bisher immer ein Argument für Googles mobiles Betriebssystem gegenüber dem goldenen Käfig von #Apple. Ab 2026 will #Google

Ab 2026 ist es vorbei mit Androids Offenheit - Ausweispflicht für Devs
Die offene Natur von Android war bisher immer ein Argument für Googles mobiles Betriebssystem gegenüber dem goldenen Käfig von Apple. Ab 2026 will Google aber das Sideloading von Apps erheblich erschweren - und führt eine Ausweispflicht für Entwickler ein.

Yay! `import.meta.resolve` is coming to Vitest https://github.com/vitest-dev/vitest/pull/8493 🎉🎉🎉

from my link log —
Making emacs tramp go brrrr.
https://coredumped.dev/2025/06/18/making-tramp-go-brrrr./
saved 2025-06-23

from my link log —
Portable dynamically linked packages on Linux.
https://brioche.dev/blog/portable-dynamically-linked-packages-on-linux/
saved 2025-03-18

@… this is likely a YAML problem. the easiest thing would be to swap to use `js` front matter for that file instead:
https://www.11ty.dev/docs/data-frontmatt…

A few random thoughts on System Shock 2 and the game industry of today.
#Blog

System Shock 2 - a horrific past caught up with me
No remaster. Only the original game, modded for additional greatness. And it got me thinking...

@… Not that impressive when considering that I spent the past 15 years working on an email client. I'm a bit sad I didn't score 21/21 😄

Simplifying #Code: migrating from Reactive to VirtualThreads
https://scalex.dev/blog/simplifying-code-journey-from-reactive-to-virtual-threads/

"Ending Android USB Freezes"
https://engineering.block.xyz/blog/ending-android-usb-freezes

WebC is a hard project to work on. It was the last thing I shipped before getting laid off a few years ago and unfortunately the project still reminds me of that. Returning to it and shipping a new version feels like some kinda growth and I’m happy about that.
https://neighborhood.11ty.dev/@11ty/11

I scored 20/21 on https://e-mail.wtf and all I got was this lousy text to share on social media.
This is an entertaining quiz. But RFC 5322 is not the right place to look for an answer to the question of what a (syntactically) valid email address is.

This is hilarious.
https://jsdate.wtf/

For the curious: https://chromium.googlesource.com/external/v8/ /e3c177a423baa3c30225c4e422b6f6c76d38b951/src/dateparser-inl.h#24