Bug: deflocalkeys-winiov2 keys not recognized correctly in defsrc with winiov2 backend

[imitombo]

Requirements

• I've searched platform-specific issues, issues and discussions to see if this has been reported before.
• My issue does not involve multiple simultaneous key presses, OR it does but I've confirmed it is not key rollover or ghosting.

Describe the bug

Describe the bug
deflocalkeys-winiov2 defined keycodes (Y=220, B=219, A=192,S=221) conflict/duplicate in defsrc, preventing correct transparent (_) output. Want to avoid JIS keyboard keycode duplication while maintaining distinct physical key behavior.

Relevant kanata config

(defcfg
  process-unmapped-keys no
)

(deflocalkeys-winiov2
;; JIS keyboard keycord
;; https://www.toptal.com/developers/keycode
Y 220 ;;JIS \(|)
B 219 ;;JIS [({)
A 192 ;;JIS @(`) 
S 221 ;;JIS ](})
)

(defsrc
Y
B
A
S
)

(deflayer base
_ ;;KEY_BACKSLASH (220)
_ ;;KEY_RIGHTBRACE (221)
_ ;;KEY_LEFTBRACE (219)
_ ;;KEY_BACKSLASH (220)
;; JIS zenkaku/hankaku →KEY_GRAVE (192)
)

To Reproduce

kanata_windows_tty_winIOv2_x64.exe -c config.kbd --debug
pressing Y/B/A/S keys
Y: Expected 220 → Actual KEY_BACKSLASH (220)
B: Expected 219 → Actual KEY_RIGHTBRACE (221)
A: Expected 192 → Actual KEY_LEFTBRACE (219)
S: Expected 221 → Actual KEY_BACKSLASH (220) DUPLICATE
zenkaku/hankaku: → KEY_GRAVE (192) UNMAPPED

Expected behavior

I want the transparent (_) layer to output exactly the keycodes specified in deflocalkeys-winiov2 (Y=220, B=219, A=192,S=221) without any modification, matching the Windows native behavior for these JIS keyboard positions.
Or I want to avoid duplicate keycodes.

Kanata version

kanata v1.10.0

Debug logs

14:03:07.2407 [INFO] kanata v1.10.0 starting
14:03:07.2412 [INFO] using LLHOOK+SendInput for keyboard IO
14:03:07.2429 [DEBUG] (1) kanata_parser::cfg: custom mapping: Y 220
14:03:07.2447 [DEBUG] (1) kanata_parser::cfg: custom mapping: B 219
14:03:07.2449 [DEBUG] (1) kanata_parser::cfg: custom mapping: A 192
14:03:07.2450 [DEBUG] (1) kanata_parser::cfg: custom mapping: S 221
14:03:07.2452 [INFO] process unmapped keys: false
14:03:07.2454 [DEBUG] (1) kanata_parser::cfg::alloc: freeing allocations of length 0
14:03:07.2455 [DEBUG] (1) kanata_parser::cfg::alloc: sref type: kanata_keyberon::action::Action<', &&[&kanata_parser::custom_action::CustomAction]>, ptr:0x19e022ea7b0 sz:16
14:03:07.2457 [DEBUG] (1) kanata_parser::cfg::alloc: sref type: kanata_keyberon::action::Action<', &&[&kanata_parser::custom_action::CustomAction]>, ptr:0x19e022ea850 sz:16
14:03:07.2458 [DEBUG] (1) kanata_parser::cfg::alloc: sref type: kanata_keyberon::action::Action<', &&[&kanata_parser::custom_action::CustomAction]>, ptr:0x19e022eaa70 sz:16
14:03:07.2460 [DEBUG] (1) kanata_parser::cfg::alloc: sref type: kanata_keyberon::action::Action<', &&[&kanata_parser::custom_action::CustomAction]>, ptr:0x19e022eaad0 sz:16
14:03:07.2461 [DEBUG] (1) kanata_parser::cfg::alloc: bref_slice type: [[kanata_keyberon::action::Action<', &&[&kanata_parser::custom_action::CustomAction]>; 767]; 2], ptr:0x19e022fa650 sz:24544
14:03:07.2463 [DEBUG] (1) kanata_parser::cfg::alloc: sref type: [kanata_keyberon::action::Action<', &&[&kanata_parser::custom_action::CustomAction]>; 767], ptr:0x19e02300640 sz:12272
14:03:07.2464 [INFO] config file is valid
14:03:07.2466 [INFO] Asking Windows to improve timer precision
14:03:07.2467 [INFO] Asking Windows to increase process priority
14:03:07.2470 [DEBUG] (1) kanata_state_machine::kanata::output_logic::zippychord: zchd reset state
14:03:07.2471 [DEBUG] (1) kanata_state_machine::kanata::output_logic::zippychord: zchd soft reset state
14:03:07.2472 [DEBUG] (1) kanata_state_machine::kanata::output_logic::zippychord: zchd clear historical data
14:03:07.2473 [INFO] Sleeping for 2s. Please release all keys and don't press additional ones. Run kanata with --help to see how understand more and how to disable this sleep.
14:03:09.2480 [INFO] entering the processing loop
14:03:09.2490 [INFO] No mouse inputs were in defsrc on startup. Not activating mouse hook.
14:03:09.2518 [INFO] Init: catching only releases and sending immediately
14:03:10.0748 [INFO] Starting kanata proper
14:03:10.0757 [INFO] You may forcefully exit kanata by pressing lctl+spc+esc at any time. These keys refer to defsrc input, meaning BEFORE kanata remaps keys.
14:03:29.3682 [DEBUG] (1) kanata_state_machine::kanata::windows::llhook: event loop: KeyEvent { code: KEY_BACKSLASH (220), value: Press }
14:03:29.3706 [DEBUG] (2) kanata_state_machine::kanata: process recv ev KeyEvent { code: KEY_BACKSLASH (220), value: Press }
14:03:29.3715 [DEBUG] (2) kanata_state_machine::kanata: key press Bslash
14:03:29.4473 [DEBUG] (1) kanata_state_machine::kanata::windows::llhook: event loop: KeyEvent { code: KEY_BACKSLASH (220), value: Release }
14:03:29.4485 [DEBUG] (2) kanata_state_machine::kanata: process recv ev KeyEvent { code: KEY_BACKSLASH (220), value: Release }
14:03:29.4509 [DEBUG] (2) kanata_state_machine::kanata: key release Bslash
14:03:30.3755 [DEBUG] (1) kanata_state_machine::kanata::windows::llhook: event loop: KeyEvent { code: KEY_RIGHTBRACE (221), value: Press }
14:03:30.3762 [DEBUG] (2) kanata_state_machine::kanata: process recv ev KeyEvent { code: KEY_RIGHTBRACE (221), value: Press }
14:03:30.3768 [DEBUG] (2) kanata_state_machine::kanata: key press RBracket
14:03:30.4491 [DEBUG] (1) kanata_state_machine::kanata::windows::llhook: event loop: KeyEvent { code: KEY_RIGHTBRACE (221), value: Release }
14:03:30.4516 [DEBUG] (2) kanata_state_machine::kanata: process recv ev KeyEvent { code: KEY_RIGHTBRACE (221), value: Release }
14:03:30.4537 [DEBUG] (2) kanata_state_machine::kanata: key release RBracket
14:03:30.9526 [DEBUG] (1) kanata_state_machine::kanata::windows::llhook: event loop: KeyEvent { code: KEY_LEFTBRACE (219), value: Press }
14:03:30.9558 [DEBUG] (2) kanata_state_machine::kanata: process recv ev KeyEvent { code: KEY_LEFTBRACE (219), value: Press }
14:03:30.9581 [DEBUG] (2) kanata_state_machine::kanata: key press LBracket
14:03:31.0312 [DEBUG] (1) kanata_state_machine::kanata::windows::llhook: event loop: KeyEvent { code: KEY_LEFTBRACE (219), value: Release }
14:03:31.0319 [DEBUG] (2) kanata_state_machine::kanata: process recv ev KeyEvent { code: KEY_LEFTBRACE (219), value: Release }
14:03:31.0329 [DEBUG] (2) kanata_state_machine::kanata: key release LBracket
14:03:32.6472 [DEBUG] (1) kanata_state_machine::kanata::windows::llhook: event loop: KeyEvent { code: KEY_BACKSLASH (220), value: Press }
14:03:32.6481 [DEBUG] (2) kanata_state_machine::kanata: process recv ev KeyEvent { code: KEY_BACKSLASH (220), value: Press }
14:03:32.6509 [DEBUG] (2) kanata_state_machine::kanata: key press Bslash
14:03:32.7193 [DEBUG] (1) kanata_state_machine::kanata::windows::llhook: event loop: KeyEvent { code: KEY_BACKSLASH (220), value: Release }
14:03:32.7213 [DEBUG] (2) kanata_state_machine::kanata: process recv ev KeyEvent { code: KEY_BACKSLASH (220), value: Release }
14:03:32.7217 [DEBUG] (2) kanata_state_machine::kanata: key release Bslash
14:03:39.5273 [DEBUG] (1) kanata_state_machine::kanata::windows::llhook: event loop: KeyEvent { code: KEY_GRAVE (192), value: Release }
14:03:39.5279 [DEBUG] (1) kanata_state_machine::kanata::windows::llhook: event loop: KeyEvent { code: KEY_GRAVE (192), value: Press }
14:03:39.5293 [DEBUG] (2) kanata_state_machine::kanata: process recv ev KeyEvent { code: KEY_GRAVE (192), value: Release }
14:03:39.5296 [DEBUG] (2) kanata_state_machine::kanata: process recv ev KeyEvent { code: KEY_GRAVE (192), value: Press }
14:03:39.5298 [DEBUG] (2) kanata_state_machine::kanata: key press Grave
14:03:39.5300 [DEBUG] (1) kanata_state_machine::kanata::windows::llhook: event loop: KeyEvent { code: KEY_GRAVE (192), value: Release }
14:03:39.5313 [DEBUG] (2) kanata_state_machine::kanata: process recv ev KeyEvent { code: KEY_GRAVE (192), value: Release }
14:03:39.5315 [DEBUG] (2) kanata_state_machine::kanata: key release Grave

Operating system and I/O mechanism

Windows 11 Japanese environment, winiov2 backend, JIS keyboard layout

Additional context

No response

[jtroo]

Please add the logs with --debug flag.

[imitombo]

I have added the logs with the --debug flag to the Debug logs section above.

[jtroo]

Thanks. Seems there are some missing mappings in these functions:

src\oskbd\windows\scancode_to_usvk.rs:

pub fn u16_to_osc(input: u16) -> Option<OsCode> {
    // ...
}

pub(crate) fn osc_to_u16(osc: OsCode) -> Option<u16> {
    // ...
}

Unfortunately I don't know the correct numbers. The values are also not being logged currently. I have made a branch to add logging. When you get a chance could you checkout the jis-winiov2 branch, which adds some logging, and re-do the same test via:

cargo run --features=winiov2 -- --debug -c path/to/my/config

[imitombo]

PS C:\kanata-test\kanata-jis-winiov2> cargo run --features=winiov2 -- --debug -c config.kbd
Compiling kanata v1.10.0 (C:\kanata-test\kanata-jis-winiov2)
Finished dev profile [unoptimized + debuginfo] target(s) in 3.91s
Running target\debug\kanata.exe --debug -c config.kbd
14:09:29.8772 [INFO] kanata v1.10.0 starting
14:09:29.8775 [INFO] using LLHOOK+SendInput for keyboard IO
14:09:29.8800 [DEBUG] (1) kanata_parser::cfg: custom mapping: Y 220
14:09:29.8805 [DEBUG] (1) kanata_parser::cfg: custom mapping: B 219
14:09:29.8807 [DEBUG] (1) kanata_parser::cfg: custom mapping: A 192
14:09:29.8810 [DEBUG] (1) kanata_parser::cfg: custom mapping: S 221
14:09:29.8813 [INFO] process unmapped keys: false
14:09:29.8816 [INFO] NOTE: kanata was compiled to never allow cmd
14:09:29.8818 [DEBUG] (1) kanata_parser::cfg::alloc: freeing allocations of length 0
14:09:29.8821 [DEBUG] (1) kanata_parser::cfg::alloc: sref type: kanata_keyberon::action::Action<', &&[&kanata_parser::custom_action::CustomAction]>, ptr:0x28b8dd86c70 sz:16
14:09:29.8824 [DEBUG] (1) kanata_parser::cfg::alloc: sref type: kanata_keyberon::action::Action<', &&[&kanata_parser::custom_action::CustomAction]>, ptr:0x28b8dd86c30 sz:16
14:09:29.8825 [DEBUG] (1) kanata_parser::cfg::alloc: sref type: kanata_keyberon::action::Action<', &&[&kanata_parser::custom_action::CustomAction]>, ptr:0x28b8dd86bb0 sz:16
14:09:29.8826 [DEBUG] (1) kanata_parser::cfg::alloc: sref type: kanata_keyberon::action::Action<', &&[&kanata_parser::custom_action::CustomAction]>, ptr:0x28b8dd86cb0 sz:16
14:09:29.8828 [DEBUG] (1) kanata_parser::cfg::alloc: bref_slice type: [[kanata_keyberon::action::Action<', &&[&kanata_parser::custom_action::CustomAction]>; 767]; 2], ptr:0x28b8dd8fec0 sz:24544
14:09:29.8830 [DEBUG] (1) kanata_parser::cfg::alloc: sref type: [kanata_keyberon::action::Action<', &&[&kanata_parser::custom_action::CustomAction]>; 767], ptr:0x28b8dd95eb0 sz:12272
14:09:29.8832 [INFO] config file is valid
14:09:29.8833 [INFO] Asking Windows to improve timer precision
14:09:29.8835 [INFO] Asking Windows to increase process priority
14:09:29.8842 [DEBUG] (1) kanata_state_machine::kanata::output_logic::zippychord: zchd reset state
14:09:29.8844 [DEBUG] (1) kanata_state_machine::kanata::output_logic::zippychord: zchd soft reset state
14:09:29.8845 [DEBUG] (1) kanata_state_machine::kanata::output_logic::zippychord: zchd clear historical data
14:09:29.8848 [INFO] Sleeping for 2s. Please release all keys and don't press additional ones. Run kanata with --help to see how understand more and how to disable this sleep.
14:09:31.8860 [INFO] entering the processing loop
14:09:31.8883 [INFO] No mouse inputs were in defsrc on startup. Not activating mouse hook.
14:09:31.8895 [INFO] Init: catching only releases and sending immediately
14:09:32.7139 [INFO] Starting kanata proper
14:09:32.7147 [INFO] You may forcefully exit kanata by pressing lctl+spc+esc at any time. These keys refer to defsrc input, meaning BEFORE kanata remaps keys.
14:09:37.0970 [DEBUG] (1) kanata_state_machine::oskbd::windows::llhook: converting 125
14:09:37.0975 [DEBUG] (1) kanata_state_machine::kanata::windows::llhook: event loop: KeyEvent { code: KEY_BACKSLASH (220), value: Press }
14:09:37.0987 [DEBUG] (2) kanata_state_machine::kanata: process recv ev KeyEvent { code: KEY_BACKSLASH (220), value: Press }
14:09:37.0991 [DEBUG] (2) kanata_state_machine::kanata: key press Bslash
14:09:37.1689 [DEBUG] (1) kanata_state_machine::oskbd::windows::llhook: converting 125
14:09:37.1693 [DEBUG] (1) kanata_state_machine::kanata::windows::llhook: event loop: KeyEvent { code: KEY_BACKSLASH (220), value: Release }
14:09:37.1697 [DEBUG] (2) kanata_state_machine::kanata: process recv ev KeyEvent { code: KEY_BACKSLASH (220), value: Release }
14:09:37.1700 [DEBUG] (2) kanata_state_machine::kanata: key release Bslash
14:09:41.0019 [DEBUG] (1) kanata_state_machine::oskbd::windows::llhook: converting 27
14:09:41.0079 [DEBUG] (1) kanata_state_machine::kanata::windows::llhook: event loop: KeyEvent { code: KEY_RIGHTBRACE (221), value: Press }
14:09:41.0105 [DEBUG] (2) kanata_state_machine::kanata: process recv ev KeyEvent { code: KEY_RIGHTBRACE (221), value: Press }
14:09:41.0143 [DEBUG] (2) kanata_state_machine::kanata: key press RBracket
14:09:41.0572 [DEBUG] (1) kanata_state_machine::oskbd::windows::llhook: converting 27
14:09:41.0579 [DEBUG] (1) kanata_state_machine::kanata::windows::llhook: event loop: KeyEvent { code: KEY_RIGHTBRACE (221), value: Release }
14:09:41.0602 [DEBUG] (2) kanata_state_machine::kanata: process recv ev KeyEvent { code: KEY_RIGHTBRACE (221), value: Release }
14:09:41.0606 [DEBUG] (2) kanata_state_machine::kanata: key release RBracket
14:09:44.4171 [DEBUG] (1) kanata_state_machine::oskbd::windows::llhook: converting 26
14:09:44.4194 [DEBUG] (1) kanata_state_machine::kanata::windows::llhook: event loop: KeyEvent { code: KEY_LEFTBRACE (219), value: Press }
14:09:44.4221 [DEBUG] (2) kanata_state_machine::kanata: process recv ev KeyEvent { code: KEY_LEFTBRACE (219), value: Press }
14:09:44.4226 [DEBUG] (2) kanata_state_machine::kanata: key press LBracket
14:09:44.5053 [DEBUG] (1) kanata_state_machine::oskbd::windows::llhook: converting 26
14:09:44.5073 [DEBUG] (1) kanata_state_machine::kanata::windows::llhook: event loop: KeyEvent { code: KEY_LEFTBRACE (219), value: Release }
14:09:44.5084 [DEBUG] (2) kanata_state_machine::kanata: process recv ev KeyEvent { code: KEY_LEFTBRACE (219), value: Release }
14:09:44.5092 [DEBUG] (2) kanata_state_machine::kanata: key release LBracket
14:09:46.6413 [DEBUG] (1) kanata_state_machine::oskbd::windows::llhook: converting 43
14:09:46.6420 [DEBUG] (1) kanata_state_machine::kanata::windows::llhook: event loop: KeyEvent { code: KEY_BACKSLASH (220), value: Press }
14:09:46.6439 [DEBUG] (2) kanata_state_machine::kanata: process recv ev KeyEvent { code: KEY_BACKSLASH (220), value: Press }
14:09:46.6446 [DEBUG] (2) kanata_state_machine::kanata: key press Bslash
14:09:46.7129 [DEBUG] (1) kanata_state_machine::oskbd::windows::llhook: converting 43
14:09:46.7133 [DEBUG] (1) kanata_state_machine::kanata::windows::llhook: event loop: KeyEvent { code: KEY_BACKSLASH (220), value: Release }
14:09:46.7141 [DEBUG] (2) kanata_state_machine::kanata: process recv ev KeyEvent { code: KEY_BACKSLASH (220), value: Release }
14:09:46.7158 [DEBUG] (2) kanata_state_machine::kanata: key release Bslash
14:09:48.5217 [DEBUG] (1) kanata_state_machine::oskbd::windows::llhook: converting 41
14:09:48.5222 [DEBUG] (1) kanata_state_machine::kanata::windows::llhook: event loop: KeyEvent { code: KEY_GRAVE (192), value: Release }
14:09:48.5237 [DEBUG] (1) kanata_state_machine::oskbd::windows::llhook: converting 41
14:09:48.5252 [DEBUG] (2) kanata_state_machine::kanata: process recv ev KeyEvent { code: KEY_GRAVE (192), value: Release }
14:09:48.5266 [DEBUG] (1) kanata_state_machine::kanata::windows::llhook: event loop: KeyEvent { code: KEY_GRAVE (192), value: Press }
14:09:48.5293 [DEBUG] (2) kanata_state_machine::kanata: process recv ev KeyEvent { code: KEY_GRAVE (192), value: Press }
14:09:48.5298 [DEBUG] (2) kanata_state_machine::kanata: key press Grave
14:09:48.5304 [DEBUG] (1) kanata_state_machine::oskbd::windows::llhook: converting 41
14:09:48.5308 [DEBUG] (1) kanata_state_machine::kanata::windows::llhook: event loop: KeyEvent { code: KEY_GRAVE (192), value: Release }
14:09:48.5322 [DEBUG] (2) kanata_state_machine::kanata: process recv ev KeyEvent { code: KEY_GRAVE (192), value: Release }
14:09:48.5335 [DEBUG] (2) kanata_state_machine::kanata: key release Grave

[imitombo]

Updated the post: Found that the output keycodes for deflocalkeys are incorrect, and confirmed that 5 keys are affected. Revised the report accordingly.

[jtroo]

Based on the logs only one key looks incorrect. I'm not sure what you're seeing post-processing (i.e. result on desktop, which isn't visible in logs) that is problematic, but 4/5 mappings look correct to me.

Problematic mapping:

converting 125 -> 220

Logs of problematic mapping

14:09:37.0970 [DEBUG] (1) kanata_state_machine::oskbd::windows::llhook: converting 125
14:09:37.0975 [DEBUG] (1) kanata_state_machine::kanata::windows::llhook: event loop: KeyEvent { code: KEY_BACKSLASH (220), value: Press }
14:09:37.0987 [DEBUG] (2) kanata_state_machine::kanata: process recv ev KeyEvent { code: KEY_BACKSLASH (220), value: Press }
14:09:37.0991 [DEBUG] (2) kanata_state_machine::kanata: key press Bslash
14:09:37.1689 [DEBUG] (1) kanata_state_machine::oskbd::windows::llhook: converting 125
14:09:37.1693 [DEBUG] (1) kanata_state_machine::kanata::windows::llhook: event loop: KeyEvent { code: KEY_BACKSLASH (220), value: Release }
14:09:37.1697 [DEBUG] (2) kanata_state_machine::kanata: process recv ev KeyEvent { code: KEY_BACKSLASH (220), value: Release }

The rest all look correct:

converting 27 -> 221
converting 26 -> 219
converting 43 -> 220
converting 41 -> 192

Logs of correct-looking mappings

14:09:37.1700 [DEBUG] (2) kanata_state_machine::kanata: key release Bslash
14:09:41.0019 [DEBUG] (1) kanata_state_machine::oskbd::windows::llhook: converting 27
14:09:41.0079 [DEBUG] (1) kanata_state_machine::kanata::windows::llhook: event loop: KeyEvent { code: KEY_RIGHTBRACE (221), value: Press }
14:09:41.0105 [DEBUG] (2) kanata_state_machine::kanata: process recv ev KeyEvent { code: KEY_RIGHTBRACE (221), value: Press }
14:09:41.0143 [DEBUG] (2) kanata_state_machine::kanata: key press RBracket
14:09:41.0572 [DEBUG] (1) kanata_state_machine::oskbd::windows::llhook: converting 27
14:09:41.0579 [DEBUG] (1) kanata_state_machine::kanata::windows::llhook: event loop: KeyEvent { code: KEY_RIGHTBRACE (221), value: Release }
14:09:41.0602 [DEBUG] (2) kanata_state_machine::kanata: process recv ev KeyEvent { code: KEY_RIGHTBRACE (221), value: Release }
14:09:41.0606 [DEBUG] (2) kanata_state_machine::kanata: key release RBracket
14:09:44.4171 [DEBUG] (1) kanata_state_machine::oskbd::windows::llhook: converting 26
14:09:44.4194 [DEBUG] (1) kanata_state_machine::kanata::windows::llhook: event loop: KeyEvent { code: KEY_LEFTBRACE (219), value: Press }
14:09:44.4221 [DEBUG] (2) kanata_state_machine::kanata: process recv ev KeyEvent { code: KEY_LEFTBRACE (219), value: Press }
14:09:44.4226 [DEBUG] (2) kanata_state_machine::kanata: key press LBracket
14:09:44.5053 [DEBUG] (1) kanata_state_machine::oskbd::windows::llhook: converting 26
14:09:44.5073 [DEBUG] (1) kanata_state_machine::kanata::windows::llhook: event loop: KeyEvent { code: KEY_LEFTBRACE (219), value: Release }
14:09:44.5084 [DEBUG] (2) kanata_state_machine::kanata: process recv ev KeyEvent { code: KEY_LEFTBRACE (219), value: Release }
14:09:44.5092 [DEBUG] (2) kanata_state_machine::kanata: key release LBracket
14:09:46.6413 [DEBUG] (1) kanata_state_machine::oskbd::windows::llhook: converting 43
14:09:46.6420 [DEBUG] (1) kanata_state_machine::kanata::windows::llhook: event loop: KeyEvent { code: KEY_BACKSLASH (220), value: Press }
14:09:46.6439 [DEBUG] (2) kanata_state_machine::kanata: process recv ev KeyEvent { code: KEY_BACKSLASH (220), value: Press }
14:09:46.6446 [DEBUG] (2) kanata_state_machine::kanata: key press Bslash
14:09:46.7129 [DEBUG] (1) kanata_state_machine::oskbd::windows::llhook: converting 43
14:09:46.7133 [DEBUG] (1) kanata_state_machine::kanata::windows::llhook: event loop: KeyEvent { code: KEY_BACKSLASH (220), value: Release }
14:09:46.7141 [DEBUG] (2) kanata_state_machine::kanata: process recv ev KeyEvent { code: KEY_BACKSLASH (220), value: Release }
14:09:46.7158 [DEBUG] (2) kanata_state_machine::kanata: key release Bslash
14:09:48.5217 [DEBUG] (1) kanata_state_machine::oskbd::windows::llhook: converting 41
14:09:48.5222 [DEBUG] (1) kanata_state_machine::kanata::windows::llhook: event loop: KeyEvent { code: KEY_GRAVE (192), value: Release }
14:09:48.5237 [DEBUG] (1) kanata_state_machine::oskbd::windows::llhook: converting 41
14:09:48.5252 [DEBUG] (2) kanata_state_machine::kanata: process recv ev KeyEvent { code: KEY_GRAVE (192), value: Release }
14:09:48.5266 [DEBUG] (1) kanata_state_machine::kanata::windows::llhook: event loop: KeyEvent { code: KEY_GRAVE (192), value: Press }
14:09:48.5293 [DEBUG] (2) kanata_state_machine::kanata: process recv ev KeyEvent { code: KEY_GRAVE (192), value: Press }
14:09:48.5298 [DEBUG] (2) kanata_state_machine::kanata: key press Grave
14:09:48.5304 [DEBUG] (1) kanata_state_machine::oskbd::windows::llhook: converting 41
14:09:48.5308 [DEBUG] (1) kanata_state_machine::kanata::windows::llhook: event loop: KeyEvent { code: KEY_GRAVE (192), value: Release }
14:09:48.5322 [DEBUG] (2) kanata_state_machine::kanata: process recv ev KeyEvent { code: KEY_GRAVE (192), value: Release }

[imitombo]

Thank you for the detailed analysis.
I've confirmed the logs by pressing keys in this order: Y → B → A → S → zenkaku/hankaku.

Key mapping flow: deflocalkeys → kanata(OsCode) → kanata(VK) → Actual output

Y 220 ;;JIS `\(|)` -> converting 125 -> KEY_BACKSLASH (220) -> `]` 
B 219 ;;JIS `[({)` -> converting 27 -> KEY_RIGHTBRACE (221) | Expected 219 -> `[` 
A 192 ;;JIS `@(`)` -> converting 26 -> KEY_LEFTBRACE (219) | Expected 192 -> `@`
S 221 ;;JIS `](})` -> converting 43 -> KEY_BACKSLASH (220) | Expected 221 -> `]`
zenkaku/hankaku ;;undefined -> converting 41-> KEY_GRAVE (192) | Expected UNMAPPED -> IME toggle

Summary of observations:

1. Only Y key produces different output character (] instead of \|)
2. deflocalkeys VK ≠ kanata log VK, but output is correct
3. Undefined zenkaku/hankaku → KEY_GRAVE(192), correctly handled as IME toggle

Questions:

1. I understand point 1 (Y key output) is the actual issue. Confirmed.
2. Are points 2 & 3 (VK mismatch but correct output, zenkaku/hankaku handling) expected kanata behavior/specifications?

The scan code 125 → VK220 mapping for Y position seems to be the root cause. Happy to test any fixes!