Ctrl+/ is received as plain "-" in panes (breaks Neovim/LazyVim terminal toggle)

[piplhu]

Is this a reproducible bug?

• I confirm this is a reproducible bug, not a feature request, idea, question, contribution proposal, or direction check.
• I reproduced this bug on the version and environment reported below using the exact steps provided.

Current behavior

When running applications inside a Herdr pane (especially Neovim + LazyVim), pressing Ctrl+/ is not delivered as the control sequence <C-/> (or the common equivalent <C-_>).

Instead, Neovim receives a plain - character.

This breaks LazyVim’s default keybinding:

• <C-/> / <C-_> → Toggle floating terminal (Snacks terminal)

Previously this worked correctly. Now it only inserts - (or moves the cursor in some contexts).

Expected behavior

a control sequence such as ^_ (or the proper CSI / extended key for Ctrl+/).

Reproduction

1. Start Herdr and open a pane.
2. Launch Neovim with LazyVim inside the pane.
3. Enter Insert mode.
4. Press Ctrl+/.

Impact

Would be great if Herdr could pass through Ctrl+/ (and preferably Ctrl+_ as well) unchanged to the pane process, similar to how other multiplexers handle common control keys used by editors.

Environment

• Herdr version: herdr 0.7.5
• Update channel (stable or preview): stable
• Operating system: WSL archlinux
• Terminal: Window Terminal
• Shell, if relevant: fish
• Relevant config, if any:

[tu-leminh]

+1
not work in macos, wezterm, and nushell

[akbash-bot]

This is the same 0x1f / Ctrl+_ decoding defect tracked in #2164 and fixed by #2165. Herdr 0.7.5 predates that fix; it is on master and queued for the next release.

If this still reproduces after that release, please reply and tag the maintainer with the new Herdr version.