movq

www.uninformativ.de

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In-reply-to » 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.

@lyse@lyse.isobeef.org Ohh, Winter Wonderland. Lovely!

Never had frozen hair. 😳 With just around 0°C? 🤔

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Another project where I’m going to use my terminal widget toolkit is a hex editor. This is still very young, obviously, and there’s a lot of work to do (both in the toolkit and this particular application), but I’m making some progress:

https://movq.de/v/2bae14ed16/vid-1769283187.mp4

Since this program is UTF-8 clean (I hope), you can do things like enter multi-byte UTF-8 sequences or paste them from the system clipboard (another hex editor I just tried failed to do this correctly):

https://movq.de/v/e9241034c1/vid-1769283755.mp4

Under the hood, I’m using mmap() with MAP_PRIVATE, which is really cool: I get the entire file as a byte array, no matter how large it is, no need to actually read it upfront; and MAP_PRIVATE means that I can write to this area however I like without changing the underlying file. The kernel does copy-on-write for me. Only when you hit Save, it will write to the filesystem. And it’s just a couple lines of code. The kernel does all the magic. 🥳

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In-reply-to » (#6d4mo2a) @shinyoukai 🙋 with extra 24/7 noise from the construction site outside (construction guys live in a little “container” and they need power, so they have a diesel generator running 24/7)

(Thank goodness, they turned it off for the weekend! So it’s only 24/5! Whoop, whoop.)

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In-reply-to » My washing machine is making funny noises and I’m this 🤏 close to just throwing it out and washing everything by hand, instead of buying another expensive enshittified product that’s designed to break down in a couple of years.

@bender@twtxt.net Naaah, I don’t have a dish washer either, it’ll be fine. 🤣 (No it won’t.)

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My washing machine is making funny noises and I’m this 🤏 close to just throwing it out and washing everything by hand, instead of buying another expensive enshittified product that’s designed to break down in a couple of years.

Washing is easy anyway, the spin cycle to dry that stuff is the important part …

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In-reply-to » yes, yes that's right. Mu (µ) now has a built-in LSP server for fans of VS Code / VSCodium 😅 You just go install ./cmd/mu-lsp/... and install the VS extension and hey presto 🥳 You get outlines of any Mu source, Find References and Go to Definition!

@prologic@twtxt.net Reminds me to have another look at LSP. Last time I checked, it was super messy in Vim. 🤔

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Spent basically the entire day (except for the mandatory walk) fighting with Python’s type hints. But, the result is that my widget toolkit now passes mypy --strict.

I really, really don’t want to write larger pieces of software without static typing anymore. With dynamic typing, you must test every code path in your program to catch even the most basic errors. pylint helps a bit (doesn’t need type hints), but that’s really not enough.

Also, somewhere along the way, I picked up a very bad (Python) programming style. (Actually, I know exactly where I picked that up, but I don’t want to point the finger now.) This style makes heavy use of dicts and tuples instead of proper classes. That works for small scripts, but it very quickly turns into an absolute mess once the program grows. Prime example: jenny. 😩

I have a love-hate relationship with Python’s type hints, because they are meaningless at runtime, so they can be utterly misleading. I’m beginning to like them as an additional safety-net, though.

(But really, if correctness is the goal, you either need to invest a ton of time to get 100% test coverage – or don’t use Python.)

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In-reply-to » 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.

@lyse@lyse.isobeef.org All that short brown grass, almost looks like Scotland. 🤔 (I’ve never been there. 😅)

What the heck is 06.jpg?

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So, are you guys up for an experiment?

I’m really not happy with the domain “uninformativ.de” anymore. I’m going to switch to “movq.de” soon (or maybe something else if I get another fancy idea).

If I keep the url = field in my twtxt file, nothing should break, right? Right? 🤣

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In-reply-to » Btw @movq you've inspired me to try and have a good 'ol crack at writing a bootloader, stage1 and customer microkernel (µKernel) that will eventually load up a Mu (µ) program and run it! 🤣 I will teach Mu (µ) to have a ./bin/mu -B -o ... -p muos/amd64 ... target.

@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.

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In-reply-to » Btw @movq you've inspired me to try and have a good 'ol crack at writing a bootloader, stage1 and customer microkernel (µKernel) that will eventually load up a Mu (µ) program and run it! 🤣 I will teach Mu (µ) to have a ./bin/mu -B -o ... -p muos/amd64 ... target.

@prologic@twtxt.net Damn, nice! I know exactly what you mean – the output/screenshot looks trivial, but there’s so much going on behind the scenes. 😃

Did you do the whole dance with BIOS boot and everything?

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In-reply-to » Here am I looking at the different tcell.Key constants and typing different key combinations in the terminal to see the generated tcell.EventKeys in the debug log. Until I pressed Ctrl+Alt+Backspace… :-D Yep, suddenly there went my X…

@lyse@lyse.isobeef.org … I sure hope that they generate these files from the general terminfo database instead of maintaining their own DB. 😳

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In-reply-to » Some work on the menu system to brighten my mood a little bit. No mouse support yet.

@bender@twtxt.net I’m already using it for tracktivity (meant for tracking activities and events, like weather, food consumption, stuff like that), which is basically a somewhat-fancy CSV editor:

I have a couple of other projects where I could use it, because they are plain curses at the moment. Like, one of them has an “edit box”, but you can’t enter Unicode, because it was too complicated. That would benefit from the framework.

Either way, it’s the most satisfying project in a long time and I’m learning a ton of stuff.

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In-reply-to » Here am I looking at the different tcell.Key constants and typing different key combinations in the terminal to see the generated tcell.EventKeys in the debug log. Until I pressed Ctrl+Alt+Backspace… :-D Yep, suddenly there went my X…

@lyse@lyse.isobeef.org Unix terminals are quite limited in that regard. 🫤 You know how Ctrl works? The XOR 0x40 thing? And Alt doesn’t exist at all, it’s just a prefixed ESC byte.

I was surprised to see curses knowing about “Shift+Tab”, wondering how that is supposed to work. Well, it’s an escape sequence, of course (depending on the terminal, of course).

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Since I used so much Rust during the holidays, I got totally used to rustfmt. I now use similar tools for Python (black and isort).

What have I been doing all these years?! I never want to format code manually again. 🤣😅

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Okay, I had heard of “River” before but I was not aware of this:

https://codeberg.org/river/river

River defers all window management policy to a separate window manager implementing the river-window-management-v1 protocol. This includes window position/size, pointer/keyboard bindings, focus management, window decorations, desktop shell graphics, and more.

This sounds promising and it follows the old X11 model. River does all the nasty Wayland work and I can make just the WM? 🤔🤯

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In-reply-to » @lyse Ah, the lower right corner is different on purpose: It’s where you can click and drag to resize the window. https://movq.de/v/cbfc575ca6/vid-1767977198.mp4 Not sure how to make this easier to recognize. 🤔 (It’s the only corner where you can drag, btw.)

@lyse@lyse.isobeef.org It’s not super comfortable, that’s right.

But these mouse events come with a caveat anyway:

ncurses uses the XM terminfo entry to enable mouse events, but it looks like this entry does not enable motion events for most terminal emulators. Reporting motion events is supported by, say, XTerm, xiate, st, or urxvt, it just isn’t activated by XM. This makes all this dragging stuff useless.

For the moment, I edited the terminfo entry for my terminal to include motion events. That can’t be a proper solution. I’m not sure yet if I’m supposed to send the appropriate sequence manually …

And the terminfo entries for tmux or screen don’t include XM at all. tmux itself supports the mouse, but I’m not sure yet how to make it pass on the events to the programs running inside of it (maybe that’s just not supported).

To make things worse, on the Linux VT (outside of X11 or Wayland), the whole thing works differently: You have to use good old gpm to get mouse events (gpm has been around forever, I already used this on SuSE Linux). ncurses does support this, but this is a build flag and Arch Linux doesn’t set this flag. So, at the moment, I’m running a custom build of ncurses as a quick hack. 😅 And this doesn’t report motion events either! Just clicks. (I don’t know if gpm itself can report motion events, I never used the library directly.)

tl;dr: The whole thing will probably be “keyboard first” and then the mouse stuff is a gimmick on top. As much as I’d like to, this isn’t going to be like TUI applications on DOS. I’ll use “Windows” for popups or a multi-window view (with the “WindowManager” being a tiny little tiling WM).

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In-reply-to » I think my widget toolkit will have an amber theme by default:

@lyse@lyse.isobeef.org Ah, the lower right corner is different on purpose: It’s where you can click and drag to resize the window. https://movq.de/v/cbfc575ca6/vid-1767977198.mp4 Not sure how to make this easier to recognize. 🤔 (It’s the only corner where you can drag, btw.)

@bender@twtxt.net Seriously, if I ever get a CRT monitor again, I want it to be an amber one and then hook it up to some 8086. 😅 Only problem is that this stuff is expensive as hell now …

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