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I’m trying to implement configurable key bindings in tt. Boy, is parsing the key names into tcell.EventKeys a horrible thing. This type consists of three information:

  1. maybe a predefined compound key sequence, like Ctrl+A
  2. maybe some modifiers, such as Shift, Ctrl, etc.
  3. maybe a rune if neither modifiers are present nor a predefined compound key exists

It’s hardcoded usage results in code like this:

func (t *TreeView[T]) InputHandler() func(event *tcell.EventKey, setFocus func(p tview.Primitive)) {
    return t.WrapInputHandler(func(event *tcell.EventKey, setFocus func(p tview.Primitive)) {
        switch event.Key() {
        case tcell.KeyUp:
            t.moveUp()
        case tcell.KeyDown:
            t.moveDown()
        case tcell.KeyHome:
            t.moveTop()
        case tcell.KeyEnd:
            t.moveBottom()
        case tcell.KeyCtrlE:
            t.moveScrollOffsetDown()
        case tcell.KeyCtrlY:
            t.moveScrollOffsetUp()
        case tcell.KeyTab, tcell.KeyBacktab:
            if t.finished != nil {
                t.finished(event.Key())
            }
        case tcell.KeyRune:
            if event.Modifiers() == tcell.ModNone {
                switch event.Rune() {
                case 'k':
                    t.moveUp()
                case 'j':
                    t.moveDown()
                case 'g':
                    t.moveTop()
                case 'G':
                    t.moveBottom()
                }
            }
        }
    })
}

This data structure is just awful to handle and especially initialize in my opinion. Some compound tcell.Keys are mapped to human-readable names in tcell.KeyNames. However, these names always use - to join modifiers, e.g. resulting in Ctrl-A, whereas tcell.EventKey.Name() produces +-delimited strings, e.g. Ctrl+A. Gnaarf, why this asymmetry!? O_o

I just checked k9s and they’re extending tcell.KeyNames with their own tcell.Key definitions like crazy: https://github.com/derailed/k9s/blob/master/internal/ui/key.go Then, they convert an original tcell.EventKey to tcell.Key: https://github.com/derailed/k9s/blob/b53f3091ca2d9ab963913b0d5e59376aea3f3e51/internal/ui/app.go#L287 This must be used when actually handling keyboard input: https://github.com/derailed/k9s/blob/e55083ba271eed6fc4014674890f70c5ed6c70e0/internal/ui/tree.go#L101

This seems to be much nicer to use. However, I fear this will break eventually. And it’s more fragile in general, because it’s rather easy to forget the conversion or one can get confused whether a certain key at hand is now an original tcell.Key coming from the library or an ā€œextendedā€ one.

I will see if I can find some other programs that provide configurable tcell key bindings.

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In-reply-to » 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).

@movq@www.uninformativ.de @prologic@twtxt.net That’s what I like about Go, too. However, every now and then I really dislike the result, e.g. when removing spaces from a column layout. Doesn’t happen often, but when it does, I hate it.

I think I should have a look at Python formatters, too. Pep8 is deprecated, I think, it’s been some time that I looked at it.

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It drizzled all morning when we picked up the old christmas trees in town with the scouts. Right after lunch the snow storm suddenly hit and dumped three centimeters of snow in just 15 minutes. I cycled home in these crazy conditions, freezing rain hammered my face. As soon as I arrived, it stopped. It’s now down to drizzling again.

All my soaked gear is now hung up to dry. The next 11 months, I’m going to find needles over needles in all kind of impossible places.

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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. šŸ¤” (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. šŸ˜… 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 ā€œkeyboard firstā€ 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 ā€œWindowsā€ for popups or a multi-window view (with the ā€œWindowManagerā€ being a tiny little tiling WM).

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In-reply-to » I think this is finally a good metaphor to talk about ā€œsimpleā€ software:

@prologic@twtxt.net Yep! I like that this distillation metaphor makes it explicit: You have to go ahead and actually distill something. It doesn’t happen automatically. The metaphor acknowledges that this is work that needs to be done by someone.

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I came across this on ā€œWhy Is SQLite Coded In Cā€, which I found interesting:

ā€œThere has lately been a lot of interest in ā€œsafeā€ 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.ā€

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

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In-reply-to » @lyse A "Hello World" binary is ~372KB in size. I currently have peephole optimization and deac code optimizations in play, and a few other performance related ones, but nothing too fancy. I have a test case that ensures fib(35) doesn't regress too badly as I continue to evolve the language.

@prologic@twtxt.net Not bad for a start, ey! Looking forward to see you going down these rabbit holes and opening one can of worms after the other. :ā€˜-D Very, very impressive, hats off to you. :-)

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@shinyoukai@neko.laidback.moe Because you might not want to commit all changed files in a single commit. I very often make use of this and create several commits. In fact, I like to git add --patch to interactively select which parts of a file go in the next commit. This happens most likely when refactoring during a feature implementation or bug fix. I couldn’t live without that anymore. :-)

If you have a much more organized way of working where this does not come up, you can just git commit --all to include all changed files in the next commit without git adding them first. But new files still have to be git added manually once.

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In-reply-to » Hmm, mine also resolves a leading tilde in these variables. And if $HOME is not specified it tries to resolve the user's home directory by user.Current().HomeDir. Maybe that's overkill, I have to check the XDG spec.

Ok, the standard library implementation is wonky at best, at least in regards to XDG, because it really doesn’t implement it properly. https://github.com/golang/go/issues/62382 I stick to my own code then. It doesn’t properly support anything else than Linux or Unixes that use XDG, but personally, I don’t care about them anyway. And the cross-platform situation is a giant mess. Unsurprisingly.

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In-reply-to » @lyse Well, I used SnipMate years ago (until 2012). IIRC, it’s more than just ā€œinsert a bit of text hereā€, it can also jump to the correct next location(s) and stuff like that. Don’t remember why I stopped using it.

@movq@www.uninformativ.de Thanks! I’ll have a look at SnipMate. Currently, I’m (mis)using the abbreviation mechanism to expand a code snippet inplace, e.g.

autocmd FileType go inoreab <buffer> testfunc func Test(t *testing.T) {<CR>}<ESC>k0wwi

or this monstrosity:

autocmd FileType go inoreab <buffer> tabletest for _, tt := range []struct {<CR>    name string<CR><CR><BS>}{<CR>   {<CR>   name: "",<CR><BS>},<CR><BS>} {<CR>  t.Run(tt.name, func(t *testing.T) {<CR><CR>})<CR><BS>}<ESC>9ki<TAB>

But this of course has the disadvantage that I still have to remove the last space or tab to trigger the expansion by hand again. It’s a bit annoying, but better than typing it out by hand.

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The tt URLs View now automatically selects the first URL that I probably are going to open. In decreasing order, the URL types are:

  1. markdown media URLs (images, videos, etc.)
  2. markdown or plaintext URLs
  3. subjects
  4. mentions

I might differentiate between mentions of subscribed and unsubscribed feeds in the future. The odds of opening a new feed over an already existing one are higher.

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In-reply-to » @lyse while caching those is a good idea the problem is baking data that can be calculated into the database instead of some cache, because post hashes are not fixed and change for every post edit. you can always easily look up other twts by hash with a cached lookup table, but now you're not locked into them so supporting hashv2 or other hash variants or any other solution becomes far easier

@zvava@twtxt.net By hashing definition, if you edit your message, it simply becomes a new message. It’s just not the same message anymore. At least from a technical point of view. As a human, personally I disagree, but that’s what I’m stuck with. There’s no reliable way to detect and ā€œcorrectā€ for that.

Storing the hash in your database doesn’t prevent you from switching to another hashing implementation later on. As of now, message creation timestamps earlier than some magical point in time use twt hash v1, messages on or after that magical timestamp use twt hash v2. So, a message either has a v1 or a v2 hash, but not both. At least one of them is never meaningful.

Once you ā€œupgradeā€ your database schema, you can check for stored messages from the future which should have been hashed using v2, but were actually v1-hashed and simply fix them.

If there will ever be another addressing scheme, you could reuse the existing hash column if it supersedes the v1/v2 hashes. Otherwise, a new column might be useful, or perhaps no column at all (looking at location-based addressing or how it was called). The old v1/v2 hashes are still needed for all past conversation trees.

In my opinion, always recalculating the hashes is a big waste of time and energy. But if it serves you well, then go for it.

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In-reply-to » Hmmm I need to figure out a way to reduce the no. of lines of code / complexity of the ARM64 native code emitter for mu (µ). It's insane really, it's a whopping ~6k SLOC, the next biggest source file is the compiler at only ~800 SLOC šŸ¤”

@shinyoukai@neko.laidback.moe Nah it’s more like there’s a lot of repeated code, because when you go from source language to intermediate representation to machine code, well you just end up writing a lot of the same patterns over and over again. I need to dedupe this I think.

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In-reply-to » This one is a slightly more 3D looking, as well as the first one, with the tail swirled. Media

@prologic@twtxt.net Not even entirely sure how I did it myself, but likely a lucky combination of the new tail swirl, the legs closer to the screen being bigger and the head looking slightly to the side (eye & ear position), with bottom part of the hair, going behind the snout. The white is just an outline, around most of my works, so I don’t think that plays a part.

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In-reply-to » Hey EU friends šŸ‘‹ wtf happened to the EU Internet today for about 40 minutes or so?

@movq@www.uninformativ.de From 2:50 PM to 3:23 PM AEST (+10 UTC) there was an outage. Everything went ā€œupā€ on Down Detector, my EU region went offline, numerous sites were unavailable, and so on. Basically everything to/from the EU appeared to basically go kaput.

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In-reply-to » Wow, @movq, so many tables. No idea what I expected (I'm totally clueless on this low-level stuff), but that was quite an interesting surprise to me. https://www.uninformativ.de/blog/postings/2025-12-21/0/POSTING-en.html

@lyse@lyse.isobeef.org These tables get shuffled around every time your OS switches to another process. It’s crazy that so much is going on behind the scenes.

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In-reply-to » @movq wow! what is assembler?

@kiwu@twtxt.net Assembly is usually the most low-level programming language that you can get. Typical programming languages like Python or Go are a thick layer of abstraction over what the CPU actually does, but with Assembler you get to see it all and you get full control. (With lots of caveats and footnotes. šŸ˜…)

I’m interested in the boot process, i.e. what exactly happens when you turn on your computer. In that area, using Assembler is a must, because you really need that fine-grained control here.

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In-reply-to » Come back from my trip, run my AoC 2025 Day 1 solution in my own language (mu) and find it didn't run correctly 🤣 Ooops!

Ahh that’s because I forgot to call main() at the end of the source file. mu is a bit of a dynamic programming language, mix of Go(ish) and Python(ish).

$ ./bin/mu examples/aoc2025/day1.mu 
Execution failed: undefined variable readline

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In-reply-to » In case you haven’t seen it yet:

@prologic@twtxt.net Here you go:

(LTT = ā€œLinus Tech Tipsā€, that’s the host.)

LTT: There was a recent thing from a major tech company, where developers were asked to say how many lines of code they wrote – and if it wasn’t enough, they were terminated. And there was someone here that was extremely upset about that approach to measuring productivity, because–

Torvalds: Oh yeah, no, you shouldn’t even be upset. At that point, that’s just incompetence. Anybody who thinks that’s a valid metric is too stupid to work at a tech company.

LTT: You do know who you just said that about, right?

Torvalds: No.

LTT: Oh. Uh, he was a prominent figure in the, uh, improved efficiency of the US government recently.

Torvalds: Oh. Apparently I was spot on.

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In-reply-to » My current PC is from 2013, so I never even bothered to check, but as it turns out: My motherboard still has a serial port. 🤯 I thought these had long died out by then. To be honest, I didn’t have the need for one, either, not until recently … So I completely lost track if PCs have these things or not.

@prologic@twtxt.net Ah, shit, you might be right. You can even buy these slot plates on Amazon. I didn’t even think to check Amazon, I went straight to eBay and tried to find it there, because I thought ā€œit’s so old, nobody is going to use that anymore, I need to buy second-handā€. 🤦🤦🤦

It really shows that I built my last PC so long ago … I know next to nothing about current hardware. 😢

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In-reply-to » @lyse what’s on the one on the left, back? Looks… enticing! 🤤

@lyse@lyse.isobeef.org no wonder I picked that cake (albeit coincidentally), I adore almonds, and hazelnuts! Your teammates are absolutely amazing, dude! A very nice project farewell! On leaving places I have a small anecdote.

I know someone who on 3 February 2004 left his job to go elsewhere. At the time his teammates threw a party, and gave him a very nice portable storage. Twenty days later, he returned, and jokingly they asked him for the storage, and money spent on farewell party back. I heard, from a close source, that he gave them his middle finger, but don’t quote me on that. šŸ˜‚šŸ˜‚šŸ˜‚

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In-reply-to » Thinking about doing Advent of Code in my own tiny language mu this year.

The most interesting part about mu is that the language is actually self-hosted and written in itself. There is a stage zero compound written and go on a stage one compiler written in mu

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Thinking about doing Advent of Code in my own tiny language mu this year.

mu is:

  • Dynamically typed
  • Lexically scoped with closures
  • Has a Go-like curly-brace syntax
  • Built around lists, maps, and first-class functions

Key syntax:

  • Functions use fn and braces:
fn add(a, b) {
    return a + b
}
  • Variables use := for declaration and = for assignment:
x := 10
x = x + 1
  • Control flow includes if / else and while:
if x > 5 {
    println("big")
} else {
    println("small")
}
while x < 10 {
    x = x + 1
}
  • Lists and maps:
nums := [1, 2, 3]
nums[1] = 42
ages := {"alice": 30, "bob": 25}
ages["bob"] = ages["bob"] + 1

Supported types:

  • int
  • bool
  • string
  • list
  • map
  • fn
  • nil

mu feels like a tiny little Go-ish, Python-ish language — curious to see how far I can get with it for Advent of Code this year. šŸŽ„

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Advent of Code 2025 starts tomorrow. šŸ„³šŸŽ„

This year, I’m going to use Python 1 on SuSE Linux 6.4, writing the code on my trusty old Pentium 133 with its 64 MB of RAM. No idea if that old version of Python will be fast enough for later puzzles. We’ll see.

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In-reply-to » @prologic Really? That’s nice. šŸ˜… (God, I haven’t been on a plane in 25 years, I think.)

That’s going to be most of our holidays next year 🤣 Mostly because we bought a van to go ā€œglampingā€ about the country šŸ˜†

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In-reply-to » I have a question! I'm looking for a small personal camera(specifically good for videos because that's what I'll use it for) that's cheap enough for a teen to afford but also actually good. Do any of you tech people have any good recs?

@kiwu@twtxt.net It also greatly depends on what kind of videos you plan to record. When you go, let’s say, diving, the specs need to be probably more suited to that type of environment. What about zoom, macro shots, wide landscapes, and so on? When typically mounted on a tripod, I’d say builtin image stabilization is not required, but for more action shots, this is fairly important to not get sea sick. :-)

I’ve got a Nikon Coolpix S9300. I typically only take photos, but it also works for the occasional video. Free hand moves are quite difficult, but when mounted to a tripod, this is not too shabby. There’s absolutely no way around a (makeshift) tridpod when zooming in, though. The audio is definitely not the best, especially wind destroys everything. If I recorded more video, I would certainly want to have an external microphone.

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In-reply-to » @prologic I'd say give crowdsec a try but I know for sure you prefer your own WAF ... šŸ˜…

@prologic@twtxt.net The main thing that I tought of is that whomever is abusing your services must be a well known actor (by range/set of IPs) that got reported by other Crowdsec users. So to my simpleton’s understanding, your reverse-proxy/web server passes the requests by crowdsec for processing, they get banned for $N hours if the source has already been blacklisted by the community or violates any of a set of behavior base rules (and even more hours for repeat offenders); otherwise the requests/responses go as per usual. Not sure if I got things right but this might help paint a better picture of the process.

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When I try to login to PayPal I now see:

Please enable JS and disable any ad blocker

Here’s the thing. PayPal takes fees from transactions and payments received and sent.

I have very right not have ads shoved in my face for something that isn’t actually free in the first place and costs money to use. If PayPal would like to continue to piss off folks me like, then I’ll happily close my PayPal account and go somewhere else that doesn’t shove ads in my face and consume 30-40% of my Internet bandwidth on useless garbage/crap.

#PayPal #Ads

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I’ve once again brought up a Gitea instance on my server space, but there are two highlights here:

  1. No self-registration (accounts are tied to the e-mail server, which is in turn tied to the system accounts)
  2. Going beyond the landing page requires to be logged in, no excuses. (It also could scare the AI crawlers to oblivion, avoiding Anubis at that)

That’s it.

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