[9fans] Acme event file and keyboard

[9fans] Acme event file and keyboard

[m via 9fans]

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Has anyone managed to do anything productive with acme's event files on 
windows and the keyboard ? All I can find is mouse-related scripts. 
 
I'm trying to do keybindings the easy way, by tapping into that event 
file, but I have some issues: 
 
- When text is added the tag isn't updated with Undo and Put 
 
- Thinking it's because acme didn't receive the event, I send it with 
winwriteevent from $PLAN9/lib/acme.rc but get "9p: write error: bad 
event syntax". No error when using 9fans.net/go/acme, but still no 
update on the tag 
 
Am I doing something wrong ? 
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Re: [9fans] Acme event file and keyboard

[rako via 9fans]

On 4/2/25 01:41, Mathieu Bivert wrote:
> 1/ opening the event file disables menu management. one can
> write 'menu' to ctl (should still be undocumented) to re-enable it.
> 
> 2/ xfideventwrite() (src/cmd/acme/xfid.c) doesn't seem to handle
> "keyboard insert" events (e.g. "KI275 275 0 1 e"; third integers
> is a flag; acme(4) only describes writing event with a flag to 1).
> one can still insert text using the addr/data files, e.g. simulating
> the previous "KI" event with:
> 
>    $ echo -n '#275' | 9p write acme/796/addr # or '#275,#275'
>    $ echo -n e | 9p write acme/796/data
> 
> 3/ in my experience, at least on UNIX, something like sxhkd[0] has
> been preferable to acme events for shortcuts, albeit imperfect. in
> particular, I remember frequently hitting a race or something
> (iirc in 9pserve) when registering an "event handler" (reading
> acme event files) on all buffers.
> 
> hope it helps,
> 
> [0]: https://github.com/baskerville/sxhkd <https://github.com/ 
> baskerville/sxhkd>

Wow, thank you, that is exactly what I needed. I'm not so much 
interested in writing random text, but mapping Ctrl-key shortcuts and I 
hope sxhkd can do that !

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Re: [9fans] Acme event file and keyboard

[Mathieu Bivert]

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1/ opening the event file disables menu management. one can
write 'menu' to ctl (should still be undocumented) to re-enable it.

2/ xfideventwrite() (src/cmd/acme/xfid.c) doesn't seem to handle
"keyboard insert" events (e.g. "KI275 275 0 1 e"; third integers
is a flag; acme(4) only describes writing event with a flag to 1).
one can still insert text using the addr/data files, e.g. simulating
the previous "KI" event with:

  $ echo -n '#275' | 9p write acme/796/addr # or '#275,#275'
  $ echo -n e | 9p write acme/796/data

3/ in my experience, at least on UNIX, something like sxhkd[0] has
been preferable to acme events for shortcuts, albeit imperfect. in
particular, I remember frequently hitting a race or something
(iirc in 9pserve) when registering an "event handler" (reading
acme event files) on all buffers.

hope it helps,

[0]: https://github.com/baskerville/sxhkd

On Sat, Mar 29, 2025 at 1:30 AM m via 9fans <9fans@9fans.net> wrote:

> Sorry I wasn't really clear, I'm talking about, in your example,
> `acme/29/event`. acme(4) explains I can also receive keyboard events and I
> do, I can get the characters I enter, but sending them back in has the
> behaviour I explained. I'm using `wineventloop` from acme.rc, and my event
> function is trivial:
>
> ```
> fn event {
>     winwritevent $*
> }
>
> newwindow
> wineventloop
> ```
>
> As I said I don't have errors when using the go API, only with the acme.rc
> one. I don't have anything special in +Errors
>
> --
> Matthieu
> *9fans <https://9fans.topicbox.com/latest>* / 9fans / see discussions
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> <https://9fans.topicbox.com/groups/9fans/members> + delivery options
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> <https://9fans.topicbox.com/groups/9fans/T08b139f442c68dca-M336f69c7e238c2194c8283b1>
>

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Re: [9fans] Acme event file and keyboard

[m via 9fans]

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Sorry I wasn't really clear, I'm talking about, in your example, `acme/29/event`. acme(4) explains I can also receive keyboard events and I do, I can get the characters I enter, but sending them back in has the behaviour I explained. I'm using `wineventloop` from acme.rc, and my event function is trivial:

```
fn event {
    winwritevent $*
}

newwindow
wineventloop
```

As I said I don't have errors when using the go API, only with the acme.rc one. I don't have anything special in +Errors

-- 
Matthieu
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Re: [9fans] Acme event file and keyboard

[Robert Kroeger]

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You said "acme's event files on windows". To be absolutely precise: you
mean this kind of window (from p9p and Edwood) (the 29 in this context)?

; 9p ls acme/29
addr
body
ctl
data
editout
errors
event
rdsel
tag
wrsel
xdata

So: what's the exact command line with args that you're running? Because
the error that you're seeing suggests that winwriteevent is sending a
malformed message to acme. Do you get any complaint content in Acme's
'+Errors' window? p9p Acme and Edwood both log some issues that show up in
their file system implementation to +Errors.

At least as how I understand the code, p9p Acme supports only the
interception of (some) mouse events. The event flow in (e.g. Edwood)
definitely does not include code to route key events to specific windows.
This is perhaps a worthwhile API addition.

Rob.



On Wed, Mar 26, 2025 at 11:37 AM Matthieu Rakotojaona via 9fans <
9fans@9fans.net> wrote:

> Has anyone managed to do anything productive with acme's event files on
> windows and the keyboard ? All I can find is mouse-related scripts.
> 
> I'm trying to do keybindings the easy way, by tapping into that event
> file, but I have some issues:
> 
> - When text is added the tag isn't updated with Undo and Put
> 
> - Thinking it's because acme didn't receive the event, I send it with
> winwriteevent from $PLAN9/lib/acme.rc but get "9p: write error: bad
> event syntax". No error when using 9fans.net/go/acme, but still no
> update on the tag
> 
> Am I doing something wrong ?
> 


-- 
Robert Kroeger
rjkroege@liqui.org

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[9fans] Acme event file and keyboard

[Matthieu Rakotojaona via 9fans]

Has anyone managed to do anything productive with acme's event files on 
windows and the keyboard ? All I can find is mouse-related scripts.

I'm trying to do keybindings the easy way, by tapping into that event 
file, but I have some issues:

- When text is added the tag isn't updated with Undo and Put

- Thinking it's because acme didn't receive the event, I send it with 
winwriteevent from $PLAN9/lib/acme.rc but get "9p: write error: bad 
event syntax". No error when using 9fans.net/go/acme, but still no 
update on the tag

Am I doing something wrong ?


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