We Love Privacy Club

www.uninformativ.de

I’m seeing some slowdowns in Vim lately. Must have something to do with syntax highlighting or indentation rules or something: When I hit Enter to go to the next line, it sometimes freezes for like 100 ms. It’s pretty annoying.

Doesn’t happen in Vim Classic, so I switched all my machines to that now.

⤋ Read More

lyse

lyse.isobeef.org

Thu, Jul 16 2:00AM (4w ago)

↳ In-reply-to » @lyse Ahh yes, but tt has a "draft" mode right? You didn't publish, then edit over and over did you? 😅

@prologic@twtxt.net Not sure if this really counts as a draft mode or this is what you had in mind. I just was in the editor for ages and didn’t close it. tt provides an integrated preview for the rendered message in there. It automatically updates every second.

Here’s a screenshot of the compose view with the conversation context on the top to which to reply to, the editor in the middle and the almost-live preview at the bottom, I hope it’s big enough:

But it’s not like I hit the “Add message” button in the compose view (the one currently selected on the screenshot), see the message in the conversation tree and then come back into the compose view to continue editing. There’s no edit functionality in tt. Once the message is appended to my twtxt.txt file on disk, all I can do is edit it with vim. The U+2028 line breaks are really annoying to deal with (I’m sure I could do something about that if I spent the time), so I try to avoid that at all costs.

Once new messages have been added to my local file, I then manually upload the file to my server in a separate terminal. There’s no upload command integrated into tt. Right from my very first message in the beginning, I’ve always done it exactly like that. I’m used to this and it really doesn’t bother me. But I can see that others might not be fans of that at all. I might add an upload mechanism to tt at some point in the future.

⤋ Read More

lyse

lyse.isobeef.org

Tue, Jul 14 7:00AM (4w ago)

Hurray, I can now press gg instead of g to go to the top in tt. Much better! :-) Other multi-key combinations are also easily possible now.

I should probably write a real article about this at some point, but here we go. The only downside with my new key binding system is that it breaks tview’s established pattern. You’ve got an InputHandler(), that is implemented using WrapInputHandler(…). It typically then directly implements the switching logic depending on the key press. Something like this:

func (w *Widget) InputHandler() func(event *tcell.EventKey, setFocus func(p tview.Primitive)) {
    // WrapInputHandler allows for intercepting key events with SetInputCapture(…)
    // from the outside for customization. This handles the default key bindings.
    return t.WrapInputHandler(func(event *tcell.EventKey, setFocus func(p tview.Primitive)) {
        switch event.Key() {
        case tcell.KeyRune:
            if event.Modifiers() == tcell.ModNone {
                switch event.Rune() {
                case 'k':
                    w.scrollUp()
                    return // we already handled the event, stop processing

                case 'j':
                    w.scrollDown()
                    return
                }
            }
        }

        // We didn't handle the key event. Maybe the parent
        // widget knows what to do with it.
        if handler := w.parent.InputHandler(); handler != nil {
            handler(event, setFocus)
        }
    })
}

From the outside, you can intercept and either stop or continue the widget’s original key handling with a potentially rewritten key event using SetInputCapture(…):

w := NewWidget()
// customized or additional key bindings
w.SetInputCapture(func(event *tcell.EventKey) *tcell.EventKey {
    switch event.Key() {
    case tcell.KeyUp:
        // Rewrite the event, so the "cursor up" key is an alias
        // for the vim key binding "k", that is handled by the
        // wrapped input handler above. (I know, I know, this is a
        // completely unrealistic example, why would anyone use
        // cursor keys when there are vim key bindings available?!)
        return tcell.NewEventKey(tcell.KeyRune, 'k', tcell.ModNone)

    case tcell.KeyRune:
        if event.Modifiers() == tcell.ModNone {
            switch event.Rune() {
                case 'q':
                    app.Stop()
                    // we already handled the event, do not pass it
                    // to the wrapped input handler above
                    return nil

                case 'r':
                    toggleMessageReadStatus()
                    return nil
            }
        }
    }

    // we didn't handle the event, pass it to the wrapped
    // input handler above
    return event
}

Since they all expect a single key, I’ve noticed that using multiple dedicated KeyBindings of mine on these different levels kinda breaks multi-key handling with common prefixes. The outer-most KeyBinding captures the prefix, but it can’t transfer it to the inner one if not handled by the outer one. At least not without some more (potentially ugly) changes. So, I now have to work with just a single KeyBindings object for the entire widget chain (if it consists of multiple other widgets or the regular input handler and input capture are in the game). The outside needs to register all its key bind customizations or extensions at the same level that the original widget handles its default ones. Doable by exposing the widget’s KeyBindings instance, but not pretty. You always have to keep this in mind.

With the KeyBindings, it will look like that:

type Widget struct {
    parent tview.Primitive

    // make it available to children or the outside either by
    // direct field access or by providing a getter method
    KeyBindings *bind.KeyBindings
}

func NewWidget() *Widget {
    w := &Widget{KeyBindings: &bind.KeyBindings{}}
    w.KeyBindings. // default key bindings
        Bind0(bind.KeySequence('k', w.scrollUp).
        Bind0(bind.KeySequence('j', w.scrollDown)
    return w
}

func (w *Widget) InputHandler() InputHandler() func(event *tcell.EventKey, setFocus func(p tview.Primitive)) {
    return t.WrapInputHandler(func(event *tcell.EventKey, setFocus func(p tview.Primitive)) {
        // also note the missing support for focus transfer at the moment
        event = w.KeyBindings.Capture(event)
        if event == nil {
            return
        }

        if handler := w.parent.InputHandler(); handler != nil {
            handler(event, setFocus)
        }
    }
}

And then from the outside, or in a child widget:

w := NewWidget()
w.KeyBindings. // additional or customized key bindings
    Bind1(bind.KeySequence(tcell.KeyUp), func(*tcell.EventKey) *tcell.EventKey {
        return tcell.NewEventKey(tcell.KeyRune, 'k', tcell.ModNone)
    }).
    Bind0(bind.KeySequence('q'), app.Stop).
    Bind0(bind.KeySequence('r'), toggleMessageReadStatus)

When directly working with tview primitives that are not part of custom widget implementations, the following works well so far:

textView := tview.NewTextView().
    SetWordWrap(true).
    SetText("…")
    SetScrollable(true)
textView.SetInputCapture((&bind.KeyBindings{}).
    Bind0(bind.KeySequence('q'), app.Stop).
    Bind1(bind.KeySequence('g', 'g'), func(*tcell.EventKey) *tcell.EventKey {
        return tcell.NewEventKey(tcell.KeyHome, 0, tcell.ModNone)
    }).
    Capture)

I need to sleep on this some more.

Also, writing very long messages like this one is really not all that fun in tt’s editor. I should absolutely provide a way to shell out to vim.

(Took me about one and a half hours to compose, holy crap. But not only because of not using vim. Although, that might have saved me a quarter hour or so for sure. Proof-reading this message also uncovered quite a few bugs in my real documentation. So, that’s a big win!) Good night!

⤋ Read More

lyse

lyse.isobeef.org

Sun, Jul 12 4:15AM (4w ago)

↳ In-reply-to » The original twt is unavailable. It may have been edited or deleted, or is from an unknown or muted feed.

@david@daiwei.me Ta, I continued my fun with studying the tcell and cbind code bases for key bindings. My plan is to eventually not only support custom key bindings in the tt configuration file, but also to enable multi-key sequences, such as gg to jump to the top of a list/tree. Or use other vim-like navigation movements like 7j or 25gg etc.

And it turns out there are only a hand full oft tcell/cbind version combinations that work together. Only if all stars align, there’s chance of success. I will probably end up pulling cbind in to simplify my life. There are situations where tcell.EventKey’s triple of key, modifiers and rune are not all that intuitive to me. Let’s see.

⤋ Read More

bender

twtxt.net

Tue, Jun 30 7:50AM (6w ago)

↳ In-reply-to » Speaking of vim... Which version of vim should I ship with GoNIX? 🤔 Vim or Neovim or something else?

@prologic@twtxt.net gonix-vim, of course. 😅

⤋ Read More

movq

www.uninformativ.de

Mon, Jun 29 3:53AM (6w ago)

↳ In-reply-to » Speaking of vim... Which version of vim should I ship with GoNIX? 🤔 Vim or Neovim or something else?

@prologic@twtxt.net Depends on what you want, I guess.

Stability: vim-classic > vim > neovim

Features: neovim > vim > vim-classic

😅

⤋ Read More

phoronix

feeds.twtxt.net

Sun, Jun 28 8:24PM (6w ago)

Vim Patches Yielding Faster GTK3 Wayland Performance: “Major Milestone”
For those using Vim with its GTK3 toolkit interface on Wayland, it soon should be delivering much better performance with pending patches… ⌘ Read more

⤋ Read More

prologic

twtxt.net

Sun, Jun 28 4:54PM (6w ago)

Speaking of vim… Which version of vim should I ship with GoNIX? 🤔 Vim or Neovim or something else?

⤋ Read More

movq

www.uninformativ.de

Sun, Jun 28 4:19PM (6w ago)

Other than the few Unicode issues I mentioned recently, vim-classic works just fine. I completely forgot that I switched to it.

⤋ Read More

movq

www.uninformativ.de

Fri, Jun 19 4:12PM (8w ago)

I noticed that there are quite a few UI glitches in vim-classic – and quickly found the cause: It comes with outdated Unicode tables.

I have to admit that I wasn’t aware that there’s a new Unicode release every year:

https://en.wikipedia.org/wiki/Unicode#Versions

Look at this huge number of changes. Every program has to keep track of that, often through libraries but sometimes not (like in Vim’s case).

I use Unicode extensively, but this shit is extremely expensive …

My TUI framework is having the same problem. At the moment, this is all offloaded to wcwidth, but if that library was to become unmaintained, I’d have to track Unicode myself.

Gah!

The DOS days were simpler. CP437, end of story. (Yes, I know that’s a lie.)

⤋ Read More

movq

www.uninformativ.de

Fri, Jun 19 12:06AM (8w ago)

↳ In-reply-to » And another fork: https://drewdevault.com/2026/03/25/2026-03-25-Forking-vim.html

Giving vim-classic a try now. Let’s see how it goes. 🤔

⤋ Read More

slashdot

feeds.twtxt.net

Sun, Jun 14 5:34AM (8w ago)

Vim Classic 8.3 Launched as an AI-Free Vim Fork
This month saw the release of Vim Classic 8.3, the first stable version of a new long-term support fork of Vim maintained without generative AI tools. Linuxiac reports:

The release is based on Vim 8.2.0148 and includes selected bug fixes and patches backported from later upstream Vim releases. Vim Classic was first announced by [SourceHut’s CEO/founder] Drew DeVault in March 20 … ⌘ Read more

⤋ Read More

lyse

lyse.isobeef.org

Sun, Jun 14 2:45AM (8w ago)

↳ In-reply-to » Every now and then, I think that I have carefully proof-read my message enough times and hit the "Add message" button in tt. But then, in the message tree, I spot another missed typo. My process is then to go to my twtxt.txt and fix it by hand. However, I still have to clean up tt's cache. This is rather tidious:

Getting the vim key bindings to work for focus switching in this modal dialog took me forever. Only cursors and (Shift+)Tab are supported out of the box. I absolutely understand that, it’s fine. I installed an input handler on the dialog, but the focus always stayed the same.

After two wasted hours, I was in despair to copy the tview.Modal into my own code base. Of course, I had to fix all the private tview field accesses first. But even installing the input handler directly on the buttons themselves did not work. Even though, the handler was definitely executed, the focus did not shift. Forcing redraws as a last resort also did not work.

Looking through all the messy chained input handling, I eventually stumbled across another place in the tview.Form, which is internally used by tview.Modal. This messed around with app focus receptions and input handlers. This gave me the idea to make the tview.Application refocus my modal dialog after I told the modal dialog which button to select. And would you look at that, this did the trick! I haven’t completely figured out what is going on exactly, but I could get rid of my Modal clone again.

I always go through hell with focus handling in tview. Each and every time. It just does not feel natural to me. Complete brainfuck to wrap my head around. The Urwid API felt sooo much more refined, it never was an issue. It just works. In fact, I cannot think of any other TUI library that has remotely the same pain level when it comes to focusing widgets as tview.

Now I’m curious how movwin deals with that. ;-)

⤋ Read More

Searching We Love Privacy Club