@lyse@lyse.isobeef.org Sounds lovely! (I think. Not sure about spider webs and such. 😅)

I woke up to 26°C this morning. 🥵

How truly wonderful! I went out tonight and the first thing I noticed was the temperature drop. It felt actually quite pleasing. What a welcome surprise, I didn’t expect that at all. It was warmer in the forst than between the fields. The tiniest breeze helped to cool off the surroundings I think. Right now, the temperature shows 23°C. It’s supposed to reach 18°C at 5 in the morning before it rapidly shoots through the sky again.

When I left the house I even saw the very end of a nice sunset. A bat was around, too. The several thousand fireflies delivered a fantastic show. It’s such a pity that I cannot show this to you. :-(

There were many frogs or toads around. Luckily, the light tan gravel road made for a good constrast to the darker hopping amphibians. So, I spotted them just in time. No animals were harmed.

The moon was out and lit up the scenery. I was perfectly chasing my own shadow for several hundred meters on a forest road. I had the moon right in my back. That moon light shadow felt magical. <3

It must have set a new record on picking up spider webs along the way. The threads around arms and legs always feel quite yucky. People were blasting music somewhere in town. You could here that noise in the entire forest. I found that rather annoying. All street lamps are operational again, so I got already blinded right at the entrance to the town. But other than that, this was a very nice evening stroll. Totally recommended. Already looking forward to tomorrow. :-)

It’s 34°C and all the shutters are closed. Walking past the front door, I was surprised that there is light sneaking through the covered glass next to it. I somehow thought it’s already the middle of the night. :-D

Comme d’habitude avec Ego c’est magistral, mais là c’est une immense […] 🔗 https://yom.li/notes/20260616122041 🔖 https://www.youtube.com/watch?v=j2JDvXvymBQ

The dairy farm has a new milk vending machine. The prices increased by 20%. One liter is now 1.20€ instead of 1.00€. But I don’t complain.

In a few meters of shrubs there were easily 50 butterflies. That was crazy, I’ve never seen this many in one spot. I should have taken a video.

The grain field in the beginning was looking so great. Crazy colorful and very yummy looking. I would have loved to take a bite. Or at least lie down right in the middle.

That was another great time in the outdoors. The 21°C were killing us, though. We were always glad when we reached a shady spot with a little breeze. I’m not gonna survive the 35°C later this week. :-(

https://lyse.isobeef.org/waldspaziergang-2026-06-15/

@movq@www.uninformativ.de I just ran across another thing. At least I personally couldn’t care less about CI infrastructure changes. Whether they’re using github action a or b or c or version v or w, it is not of my interest. At all. (It might be useful to estimate the supply chain attack risk, though.) If the maintainers want to include them in the changelog – and there are probably people to whom this information is crucial – it’s probably best to document CI infrastructure changes in their own section.

Got absolutely jack and sick of all the fucking useless bots, C&C and shit™ hitting my Git server tonight 🤬 So I sat down and built a lightweight version of Anubis, called caddy-pow. So now going forward, you’ll have to (sorry) have a HS-enabled browser to hit git.mills.io which will hopefully make most (if not all) bots just go the fuck away 🤦‍♂️ #Hostile #Web

@movq@www.uninformativ.de Great to be asked for feedback! I just noticed that the first wcwidth version was derived from Markus Kuhn’s C code. I came across him in my ISO 8601 and RFC 3339 endeavors the other day. https://www.cl.cam.ac.uk/~mgk25/iso-time.html What a surprise. :-)

Oh, nice. In my endeavors of time in C++, I came across cal 9 1752. https://www.redhat.com/en/blog/brief-history-mktime

Oh boy, it was bloody humid this morning. Just around 20°C when we left, but climbing rapidly. The flow of air when walking was okay, but as soon as we stopped, streams of sweat were pouring down on us. Luckily, it was cloudy, but the lack of wind was bad. Now, the sun is out, 29°C will be reached in an hour and I’m glad that the house is still cool. It will be a different story in a few weeks or months. Not looking forward to that at ll.

On the bright side, we saw the first tadpoles of the year and an also first, but sadly dead slow worm that probably some bird dropped on a bench next to the fountain. The fly was stuck to its feast and also cactus. The municipality fixed the railing nicely and we came across a giant patch of great looking fire bugs on the summit.

All in all, a successful stroll through the woods but for the humid heat.

https://lyse.isobeef.org/waldspaziergang-2026-05-30/

Aha, yesterday’s newly added support for LC_TIME to render localized timestamps also broke the feed parsing with my LANG=de_DE.UTF-8 and LC_CTYPE=de_DE.UTF-8 environment. :-)

Atom feeds make use of RFC 3339 timestamps. They are first converted into RFC 882 timestamp representation, which is the one that RSS feeds use. However, this conversion now results in localized RFC 882 timestamps, which cannot be parsed into Unix timestamp numbers via curl_getdate(…). I bet that it doesn’t know about the localization at all and expects English month and weekday names. Looking at its docs, I reckon that function was selected because of its myriad of supported timestamp formats: https://curl.se/libcurl/c/curl_getdate.html RFC 3339 is not included, though, hence the transformation up front.

The intermediate Item objects in the parser domain use std::string for the timestamp representation. This isn’t all that silly, because Newsboat supports all sorts of different feed formats with different timestamp formats. These RFC 883 timestamps are centrally parsed into time_t.

Speaking of time: It’s time to go to bed after this late bug hunting fun. :-)

We’re currently at about 28-30°C, but the relative humidity is at a crazy low level of 20%. 😳 This actually feels pretty nice. If it only were always like that …

Agog to be the 2,644th backer 😎 on BackerKit Crowdfunding for Old-School Essentials Demonic Grimoire! https://www.backerkit.com/c/projects/exalted-funeral/old-school-essentials-demonic-grimoire

And a trip to my backyard mountain again. It was very windy, so the 16°C felt even cooler than that. But it will be back in the twenties tomorrow when I visit a mate for a hike, oof.

https://lyse.isobeef.org/waldspaziergang-2026-04-30/

There’s a joke for win fans. Q: I have a problem with my win system. Can you help me? A: Yes. Go to the dos prompt and type format c:, then press OK and all your problems cease within a minute.

My mate and I hiked some 16-18 kilometers to the Wasserberg. The 22°C sun was beating down hard on us. There were quite a bunch of clouds all around, but none of them casted the tiniest shade on us. Only in the second half we got a little bit luckier in that regard. Still, we were soaked before we even left town. Hardly any breeze.

Unfortunately, I left my camera at home and found it hidden behind the cettle in the kitchen after searching the entire house for some 15 odd minutes. However, a greenfinch paid me a visit this morning and I got it on camera. The sunset was crazy colored, too:

https://lyse.isobeef.org/gruenfink-2026-04-18/

The weathermen just cannot be right with their 20°C today, it must have been more. It was awfully hot, the light breeze was not enough and even absent most of the time. In the shade, it was alright. Other than that, the walk to the dairy farm and back was really beautiful. Very lovely scenery.

Somebody spilled their paintbox at sunset. Unfortunately, I missed to reinsert the SD card into my camera, so I could not take more photos of Azabache and his new mate. They quickly disappeared. He even landed right next to my window, so that would have been a killer shot.

https://lyse.isobeef.org/waldspaziergang-2026-04-17/

We cleaned up the forest today with the scouts at absolute dream weather. Blue sky, no clouds, 19°C sunshine. In the morning it was still quite chilly and windy, though. We didn’t find anything spectacular, maybe a rubber dinghy, three car tires and a broken ratchet strap are the most outstanding things to me apart from all the general rubbish, cigarettes, glass, wet wipes, etc. Still, a very fun activity. In the end we had bockwurst, grilled cheese and lye buns on the camp fire.

I then went for a quick stroll with my mate. It’s crazy how quickly the clouds moved in, 30-45 minutes tops. There will be rain in an hour. And the coming days only reach half the temps. I’m glad I took advantage of the great spring day. Haven’t seen Azabache yet and with the rain on deck, the odds are against him and me.

https://lyse.isobeef.org/waldspaziergang-2026-04-11/

@lyse@lyse.isobeef.org AI result ahead, feel free to ignore.

I “asked” the AI at work the same question out of morbid curiousity. It “said” that SQLite converts that integer to floating point internally on overflows and then, when converting back, the x86 instruction cvttsd2si will turn it into 0x8000000000000000, even if the actual floating point value is outside of that range. So, yes, it allegedly actually saturates, as a side effect of the type conversion.

I couldn’t find anything about that automatic conversion in SQLite’s manual, yet, but an experiment looks like it might be true:

sqlite> select typeof(1 << 63);
╭─────────────────╮
│ typeof(1 << 63) │
╞═════════════════╡
│ integer         │
╰─────────────────╯

sqlite> select typeof((1 << 63) - 1);
╭──────────────────────╮
│ typeof((1 << 63) ... │
╞══════════════════════╡
│ real                 │
╰──────────────────────╯

As for cvttsd2si, this source confirms the handling of 0x8000000000000000 on range errors: https://www.felixcloutier.com/x86/cvttsd2si

The following C program also confirms it (run through gdb to see cvttsd2si in action):

<a href="https://yarn.girlonthemoon.xyz/search?q=%23include">#include</a> <stdint.h>
<a href="https://yarn.girlonthemoon.xyz/search?q=%23include">#include</a> <stdio.h>

int
main()
{
    int64_t i;
    double d;

    /* -3000 instead of -1, because `double` can’t represent a
     * difference of -1 at this scale. */
    d = -9223372036854775808.0 - 3000;

    i = d;
    printf("%lf, 0x%lx, %ld\n", d, i, i);

    return 0;
}

(Remark about AI usage: Fine, I got an answer and maybe it’s even correct. But doing this completely ruined it for me. It would have been much more satisfying to figure this out myself. I actually suspected some floating point stuff going on here, but instead of verifying this myself I reached for the unethical tool and denied myself a little bit of fun at the weekend. Won’t do that again.)

I called it quits a bit earlier and enjoyed the sunny 19°C blue sky in nature. I just sat an entire hour on a bench (12) near a habitat (07) and enjoyed the sun rays and singing birds around me. When I returned, the batteries were almost drained. The sunset finished them off, so that I could not record Azabache’s concert shortly after. However, I saw that amazing bird this morning and got him on film. Enjoy!

https://lyse.isobeef.org/waldspaziergang-2026-04-08/

Sherlock & Daughter, contrairement à Young Sherlock, se veut beaucoup plus modeste. C’est pas la […] 🔗 https://yom.li/notes/20260404222019

Thank you, @bender@twtxt.net!

My mate and I took advantage of the public holiday and went on a hike. At first, the 14°C and only slight wind weren’t all that terrible, especially since there were only a few clouds. Later, the sun got covered more and more and also the wind picked up. I was really glad that I brought my jacket along. In the beginning I was contemplating about leaving it at home, but then still wore it and stripped it a few minutes into the trip. It was very windy at the summit, so for our second lunch break wearing it was an absolute must. It was a very beautiful trip and I enjoyed my mate’s company.

Finally, Azabache showed up, too. I didn’t bother videoing with all the wind. Didn’t feel like fixing the audio. Maybe tomorrow.

https://lyse.isobeef.org/waldspaziergang-2026-04-03/

Azabache returned just a few minutes later when the sparrow or great/blue tit was gone. Next time I will use a tripod to record the video. Also sorry about the sound, I used all my Audacity skills to remove the noise, but somehow, combining the video and audio track in kdenlive somehow messed up the sound. There’s some horrible sqealing towards the beginning.

The sun was out and tricked everybody to believe it’s nice and warm. However, with the wind, the 11°C felt way colder. Still, super nice out there, I enjoyed it a lot. The quick trip to the dairy farm took me more than double the regular time, because I took close to 400 photos. Oh boy, Lyse is such an idiot!

https://lyse.isobeef.org/waldspaziergang-2026-04-02/

The 12°C sunshine was rather windy all day long as witnessed by the ruffled 02. https://lyse.isobeef.org/waldspaziergang-2026-03-18/

@rdlmda@rdlmda.me most of our conversations used to be about twtxt, I am not going to lie. Lately? Not so much. It turns out (a) we don’t need a longer hash, (b) we don’t care so much about changing addressing, and © I am just Bender, what else can I say? :-D :-P

After making three crosses (state and mayoral election) my mate and I went into the wildernes. Well, nature at least. There are heaps of people out there, too. The 13°C (and still raising) are very nice. I’m drowing in sweat, though.

https://lyse.isobeef.org/waldspaziergang-2026-03-08/

I missed the 20°C on Friday, but I took profits of the 10°C this evening: https://lyse.isobeef.org/waldspaziergang-2026-03-01/

@bender@twtxt.net Holy cow, I didn’t notice the ice! :-O Thanks for pointing that out! I was just after the bee. :-)

33°C down to 3°C, wow. O_o What a drop. But it raises again dramatically during day, right?

I took advantage of the beautiful 14°C sunshine and decided to have a long lunch break: https://lyse.isobeef.org/waldspaziergang-2026-02-25/ When there was no wind, the thin jacket was actually too warm.

@movq@www.uninformativ.de I’ve got the same problem that you had the other day: finding past temperature data. But yeah, it looked much warmer than it actually was. Maybe 5°C? Possibly less when I found myself in the snow- and rainstorm in the end.

With the wind, my fingers were frozen. I should have worn gloves. Without them, I could only put my hands in the pockets of my jacket. That didn’t help much, though, because I frequently stopped to take yet another photo, so they cooled off again right away. :-D

Balancing the big/long, closed umbrella under my arm while I had my hands burried was also a little tricky.

First world problems. :-)

@movq@www.uninformativ.de Oh, so just half a millimeter then! :-D That’s plenty these days for everything to shut down, I’m afraid. If only the same élan was still in action as back then:

https://3.bp.blogspot.com/_5wOW9jdbdvM/TEVVi8ZsMWI/AAAAAAAAALU/vVqvnZ1mzGQ/s1600/Bahn+Werbung+-+alle+reden+vom+Wetter.JPG

And here I am watching Mattias Björnström’s gas pedal freezing at full throttle around -40°C. Well, falls apart and gets stuck.

https://www.youtube.com/watch?v=MLgmV15XeSY

I’m not an expert on this subject at all, but I reckon an automatic in addition with all its sensors is much worse than a manual one. All wheel drive, studded tires and diff locked is what one wants in icy situations. :-D

I’ve got sore muscles. The sticky snow couldn’t be pushed, it had to be laborously cleared shovel by shovel. :-D

In my lunch break, I went on a short stroll. Oh boy, walking through deep damp snow is exhausting! There were sections with easily 30 centimeters and more. Some big wind drifts had piled up. Despite melting off quickly in the 4°C, especially turning the trees brown again, the white landscape still looks so nice. I’m glad these road marking sticks finally came in handy for the snow plow guys. :-) The black and orange stripes are 30 cm high.

https://lyse.isobeef.org/waldspaziergang-2026-01-26/

That’s probably it. There’s no significant snowfall announced for the rest of the week and temperatures are supposed to stay in the 2-4°C range by day.

@movq@www.uninformativ.de I was also extremely surprised and couldn’t believe it myself. But around the hair were definitely two, three millimeters of ice with a bunch of snow on top. I couldn’t simply brush it off, the hair were all frozen together. Back in the house, it took maybe three minutes to melt the solidified white stuff and free up and disconnect the individual hair. Crazy.

Yeah, 0°C in town, maybe -2°C on the summit. It definitely didn’t feel all the cold, but I came prepared with a few layers of cloth.

What a beautiful, beautiful 0°C Sunday arvo and evening! The weather forecast delayed the snow by the minute. An hour or so after it finally started very, very lightly, I headed off for the woods to check out the lake again. Unfortunately, with the fresh snow layer, the crazy wild surface texture of the ice sheet wasn’t visible anymore. But it brought some other nice views and photo opportunities.

I initially thought that I just go for a quick turn. However, with the snowfall a wee bit increasing I was hooked and kept going. Visibility was poor, but the snow blankets just looked too stunning. The road surfaces were quite slippery, so I often just walked alongside the pathways. On downhill slopes I had some good fun sliding down the road on my feet. With varying success. Luckily, I managed not to fall.

On the summit of the mountain the twigs had those absolutely magnificently looking windblown crystal coverings. Awwwwwww! They never get old. It was already getting dark, so the camera was tired and wanted to sleep. The snow program then made use of the flash and I’m quite pleased with how these shots turned out.

Two deer crossed the road in front of me and ran into the woods, that was sight for sore eyes. Although I felt bad that they had to flee from me in this white terrain. By the time I got home, the snow had accumulated around eight centimeters in height, even in town down in the valley. Walking on this fresh snow is just amazing. And I love the sound it makes. Today, the snow consistency must have been just right, because the crushing sound was really loud.

I cannot recall that I had frozen hair and beard before, but today, there was a thick ice buildup. In case I had, it was definitely never this much. Felt really cool.

Enough of this preliminary skirmishing, there ya go: https://lyse.isobeef.org/waldspaziergang-2026-01-25/

My mate and I went on a hike earlier. Yesterday, we had lovely 12°C. But today, it was down to at most 4°C. Oh well. At least the sun was out and and there was just a tiny bit of wind. We knew upfont that scarf, beanie and gloves were mandatory. Especially at the more windy sections like up top the hills. The view was absolutely terrible, but we made the best of it.

With the sun shining on us during our lunch break at a forest edge bench, we still enjoyed the lookout in 01. I brought some old carpet scraps to sit on and was happily surprised that they isolated even better than I had hoped for. Some hot tea helped us staying warm.

After five hours we returned just after sunset. I’m quite tired now, completely out of shape.

https://lyse.isobeef.org/waldspaziergang-2026-01-17/

@prologic@twtxt.net I’d love to take a look at the code. 😅

I’m kind of curious to know how much Assembly I need vs. How much of a microkernel can I build purely in Mu (µ)? 🤔

Can’t really answer that, because I only made a working kernel for 16-bit real mode yet. That is 99% C, though, only syscall entry points are Assembly. (The OpenWatcom compiler provides C wrappers for triggering software interrupts, which makes things easier.)

But in long mode? No idea yet. 😅 At least changing the page tables will require a tiny little bit of Assembly.

Vacation: Doing crazy things like C on DOS, lots of Rust, bare-metal assembly code, everything is fine.

Back at work: How the fuck do I move an email in this web mail program? Am I stupid? 😮‍💨

@bender@twtxt.net They’re not completely impossible, but C makes it much easier to run into them. I think the key point is that in those “safe” languages, buffer overflows are caught and immediately crash the program (if not handled otherwise) instead of silently corrupting memory, not being noticed right away and maybe only later crashing at a different location, where it can be very hard to find the actual root cause. This is a big improvement in my book.

Some programmers are indeed horrible. I’m guilty myself. :-)

I like the article.

I came across this on “Why Is SQLite Coded In C”, which I found interesting:

“There has lately been a lot of interest in “safe” programming languages like Rust or Go in which it is impossible, or is at least difficult, to make common programming errors like memory leaks or array overruns.”

If that’s true, then encountering those issues means the programmer is, simply, horrible?

@shinyoukai@neko.laidback.moe Oh no, fuck that 🤣 That’s why I built an FFI so I can call C-functions via shared libraries 🤣

Mu (µ) is now getting much closer to where I want it to be, it now has:

• A process stdlib module (very basic, but it works)
  
• An ffi stdob module that supports dlopen / dlsym and calling C functions with a nice mu-esque wrapper ffi.fn(...)
  
• A sqlite stdlib module (also very basic) that shows off the FFI capabilities
  

😅

On my way to having windows and mouse support:

https://movq.de/v/95bbbbd3e8/basic-windows.mp4

It would be cool to have something like Turbo Vision eventually.

(I considered just using Turbo Vision, but it’s a C++ library and that’s not quite what I’m looking for. But it’s not yet completely off the table.)

The baseline here is about 55 ms for nothing, btw. Python ain’t fast to start up.

$ time python -c 'exit(0)'

real    0m0.055s
user    0m0.046s
sys     0m0.007s

My little toy operating system from last year runs in 16-bit Real Mode (like DOS). Since I’ve recently figured out how to switch to 64-bit Long Mode right after BIOS boot, I now have a little program that performs this switch on my toy OS. It will load and run any x86-64 program, assuming it’s freestanding, a flat binary, and small enough (< 128 KiB code, only uses the first 2 MiB of memory).

Here I’m running a little C program (compiled using normal GCC, no Watcom trickery):

https://movq.de/v/b27ced6dcb/los86%2D64.mp4

https://movq.de/v/b27ced6dcb/c.png

Next steps could include:

• Use Rust instead of C for that 64-bit program?
  
• Provide interrupt service routines. (At the moment, it just keeps interrupts disabled.)

@prologic@twtxt.net @movq@www.uninformativ.de Oh, I take my 0°C over the 36°C anytime! Even with yesterday’s gray and windy sleet in my face. However, there are definitely more pleasant times to walk in town, I’ll give you that. For example on 0°C sunny today: https://lyse.isobeef.org/waldspaziergang-2025-12-25/

@prologic@twtxt.net And I froze my ass off yesterday at -5°C and strong winds. 🤣

that’s a whopping 36°C today 🥵

Palm T!C with Overbite…

I rewrote all my solutions in Rust (except for day 10 part 2) and these are the runtimes on my i7-3770 from 2013 (this measures CLOCK_PROCESS_CPUTIME_ID, not wallclock):

day01/1 [      00.000501311] Result: 1066
day01/2 [      00.000400298] Result: 6223
day02/1 [      00.000358848] Result: 12586854255
day02/2 [      00.000750711] Result: 17298174201
day03/1 [      00.000106537] Result: 17405
day03/2 [      00.000404632] Result: 171990312704598
day04/1 [      00.000257517] Result: 1626
day04/2 [      00.007495342] Result: 9173
day05/1 [      00.000237212] Result: 505
day05/2 [      00.000142731] Result: 344423158480189
day06/1 [      00.000229629] Result: 4076006202939
day06/2 [      00.000279552] Result: 7903168391557
day07/1 [      00.000204422] Result: 1622
day07/2 [      00.000283816] Result: 10357305916520
day08/1 [      00.029427421] Result: 84968
day08/2 [      00.028089859] Result: 8663467782
day09/1 [      00.000310304] Result: 4764078684
day09/2 [      00.015512554] Result: 1652344888
day10/1 [      00.000796663] Result: 375
day10/2 [      --.---------] Result: 15377 (Z3)
day11/1 [      00.000416804] Result: 753
day11/2 [      00.000660528] Result: 450854305019580
day12/1 [      00.000336081] Result: 577
day12/2 [      00.000000695] Result: no part 2

A little under 90 ms total.

On my Samsung NC10 netbook from 2011 with its Intel Atom N455 at 1.6 GHz:

day01/1 [      00.003771326] Result: 1066
day01/2 [      00.003267317] Result: 6223
day02/1 [      00.003902698] Result: 12586854255
day02/2 [      00.006659479] Result: 17298174201
day03/1 [      00.000747544] Result: 17405
day03/2 [      00.002737587] Result: 171990312704598
day04/1 [      00.001263892] Result: 1626
day04/2 [      00.044985301] Result: 9173
day05/1 [      00.001696761] Result: 505
day05/2 [      00.000978962] Result: 344423158480189
day06/1 [      00.001387660] Result: 4076006202939
day06/2 [      00.001734248] Result: 7903168391557
day07/1 [      00.001295528] Result: 1622
day07/2 [      00.001809659] Result: 10357305916520
day08/1 [      00.277251443] Result: 84968
day08/2 [      00.284359332] Result: 8663467782
day09/1 [      00.003152407] Result: 4764078684
day09/2 [      00.071123459] Result: 1652344888
day10/1 [      00.005279527] Result: 375
day10/2 [      --.---------] Result: 15377 (Z3)
day11/1 [      00.003273342] Result: 753
day11/2 [      00.005139719] Result: 450854305019580
day12/1 [      00.002857552] Result: 577
day12/2 [      00.000004421] Result: no part 2

A little over 700 ms total.

I like this. You get performance that’s more or less in the ballpark of C, but without the footguns.

Day 7 was pretty tough, I initially ended up implementing an exponential in both time and memory solution that I killed because it was eating all the resources on my Mac Studio, and this poor little machine only has 32GB of memory (I stopped it at 118GB of memory, swapping badly!), This is what I ended up doing before/after:

• Before: Time O(2^k · L), memory O(2^k), where k is the number of splitters along a reachable path and L is path length. Exponential in k.
  
• After: Time O(R·C) (or O(R·C + s) with s split events), memory O©, where R = rows, C = columns. Polynomial/linear in grid size.