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Joined 1 year ago
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Cake day: June 25th, 2023

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  • I’ve only ever seen two parts of git that could arguably be called unintuitive, and they both got fixes:

    • git reset seems to do 2 unrelated things for some people. Nowadays git restore exists.
    • the inconsistent difference between a..b and a...b commit ranges in various commands. This is admittedly obscure enough that I would have to look up the manual half the time anyway.
    • I suppose we could call the fact that man git foo didn’t used to work unintuitive I guess.

    The tooling to integrate git submodule into normal tree operations could be improved though. But nowadays there’s git subtree for all the people who want to do it wrong but easily.


    The only reason people complain so much about git is that it’s the only VCS that’s actually widely used anymore. All the others have worse problems, but there’s nobody left to complain about them.


  • Python 2 had one mostly-working str class, and a mostly-broken unicode class.

    Python 3, for some reason, got rid of the one that mostly worked, leaving no replacement. The closest you can get is to spam surrogateescape everywhere, which is both incorrect and has significant performance cost - and that still leaves several APIs unavailable.

    Simply removing str indexing would’ve fixed the common user mistake if that was really desirable. It’s not like unicode indexing is meaningful either, and now large amounts of historical data can no longer be accessed from Python.



  • Unfortunately both of those are used in common English or computer words. The only letter pairs not used are: bq, bx, cf, cj, dx, fq, fx, fz, hx, jb, jc, jf, jg, jq, jv, jx, jz, kq, kz, mx, px, qc, qd, qg, qh, qj, qk, ql, qm, qn, qp, qq, qr, qt, qv, qx, qy, qz, sx, tx, vb, vc, vf, vj, vm, vq, vw, vx, wq, wx, xj, zx.

    Personally I have mappings based on <CR>, and press it twice to get a real newline.




  • Speed is far from the only thing that matters in terminal emulators though. Correctness is critical.

    The only terminals in which I have any confidence of correctness are xterm and pangoterm. And I suppose technically the BEL-for-ST extension is incorrect even there, but we have to live with that and a workaround is available.

    A lot of terminal emulators end up hard-coding a handful of common sequences, and fail to correctly ignore sequences they don’t implement. And worse, many go on to implement sequences that cannot be correctly handled.

    One simple example that usually fails: \e!!F. More nasty, however, are the ones that ignore intermediaries and execute some unrelated command instead.

    I can’t be bothered to pick apart specific terminals anymore. Most don’t even know what an IR is.




  • Even logging can sometimes be enough to hide the heisgenbug.

    Logging to a file descriptor can sometimes be avoided by logging to memory (which for crash-safety includes the possibility of an mmap’ed file, since the kernel will just take care of them as long as the whole system doesn’t go down). But logging from every thread to a single section of memory can also be problematic (even without mutexes, atomics can be expensive and certainly have side-effects) - sometimes you need a separate per-thread log, and combine in the log-reader tool.





  • I haven’t managed to break into the JS-adjacent ecosystem, but tooling around Typescript is definitely a major part of the problem:

    • following a basic tutorial somehow ended up spending multiple seconds just to transpile and run “Hello, World!”.
    • there are at least 3 different ways of specifying the files and settings you want to use, and some of them will cause others to be ignored entirely, even though it looks like they should be used.
    • embracing duck typing means many common type errors simply cannot be caught. Also that means dynamic type checks are impossible, even though JS itself supports them (admittedly with oddities, e.g. with string vs String).
    • there are at least 3 incompatible ways to define and use a “module”, and it’s not clear what’s actually useful or intended to be used, or what the outputs are supposed to be for different environments.

    At this point I’m seriously considering writing my own sanelanguage-to-JS transpiler or using some other one (maybe Haxe? but I’m not sure its object model allows full performance tweaking), because I’ve written literally dozens of other languages without this kind of pain.

    WASM has its own problems (we shouldn’t be quick to call asm.js obsolete … also, C’s object model is not what people think it is) but that’s another story.


    At this point, I’d be happy with some basic code reuse. Have a “generalized fibonacci” module taking 3 inputs, and call it 3 ways: from a web browser on the client side, as a web browser request to server (which is running nodejs), or as a nodejs command-line program. Transpiling one of the callers should not force the others to be transpiled, but if multiple of the callers need to be transpiled at once, it should not typecheck the library internals multiple times. I should also be able to choose whether to produce a “dynamic” library (which can be recompiled later without recompiling the dependencies) or a “static” one (only output a single merged file), and whether to minify.

    I’m not sure the TS ecosystem is competent enough to deal with this.