TUI: session.child.next/previous keybind defaults are dead commands #56153

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1. opencode-agent commented on Oct 16, 2026

   

   opencode-agentBot

   on Oct 16, 2026 – with OpenCode Agent

   Contributor

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   Thanks for the report. I reproduced this on v2.0.31 with two subagent sessions. I opened one child from the subagent picker (down, then ctrl+a to show finished subagents, then return) and pressed right/left. The view stayed on the same child. With the picker open, the arrows only switch its tabs (Subagents/Shell). After closing it with escape, which goes back to the parent, they do nothing. The recording and the script below show this.

   The code matches what you describe: packages/tui/src/config/keybind.ts binds session.child.next/session.child.previous, but no command with those IDs is registered in packages/tui/src. I haven't re-run this on the latest dev build yet; the dev checkout at 582c974 still has the same definitions with no matching commands.

   Related: #56154 covers the up/down behaviour you mention.

   recording.mp4

   

   

   Reproduction script (drive.ts)

   // Repro for #56153: `right`/`left` (session.child.next/previous) do nothing in a child session.
   import { Effect, Stream } from "effect"
   import { Llm, OpenCodeDriver } from "opencode-drive"
   
   export default OpenCodeDriver.use(
     {
       ...(process.env.OC_DEV ? { opencode: { dev: process.env.OC_DEV } } : {}),
       tui: { recording: true, keypressOverlay: true },
     },
     ({ ui, llm }) =>
       Effect.gen(function* () {
         yield* llm.serve((_req, index) =>
           index === 0
             ? Stream.make(
                 Llm.toolCall({ index: 0, id: "call_a", name: "subagent", input: { agent: "general", description: "Alpha child task", prompt: "Say alpha" } }),
                 Llm.toolCall({ index: 1, id: "call_b", name: "subagent", input: { agent: "general", description: "Beta child task", prompt: "Say beta" } }),
                 Llm.finish("tool-calls"),
               )
             : Stream.make(Llm.text(`Done ${index}.`)),
         )
         yield* ui.submit("Run two subagents")
         yield* ui.waitFor("Beta child task", { timeout: 30000 })
         yield* Effect.sleep(3000)
         yield* ui.screenshot("01-parent-with-children")
         // open subagent picker and enter the first child
         yield* ui.press("down")
         yield* Effect.sleep(800)
         yield* ui.press("a", { ctrl: true }) // show inactive (finished) subagents
         yield* Effect.sleep(1000)
         yield* ui.screenshot("02-subagent-picker")
         yield* ui.press("return")
         yield* Effect.sleep(1500)
         const before = yield* ui.capture()
         yield* ui.screenshot("03-in-child")
         // session.child.next default = right: expected to go to the other child (Alpha); instead it only switches the picker tab
         yield* ui.press("right")
         yield* Effect.sleep(1500)
         const afterRight = yield* ui.capture()
         yield* ui.screenshot("04-after-right")
         yield* ui.press("left")
         yield* Effect.sleep(1500)
         const afterLeft = yield* ui.capture()
         yield* ui.screenshot("05-after-left")
         const text = (f: unknown) => JSON.stringify(f)
         yield* Effect.log(`screen unchanged after right: ${text(before) === text(afterRight)}`)
         yield* Effect.log(`screen unchanged after left: ${text(afterRight) === text(afterLeft)}`)
       }),
   )

   Run it with opencode-drive: opencode-drive run ./drive.ts. It drives opencode from your PATH; set OC_DEV to the path of an OpenCode checkout to run that from source instead.
2. opencode-agent

   added

   reproduced

   on Oct 16, 2026
3. Dante-dan commented on Oct 16, 2026

   

   Dante-dan

   on Oct 16, 2026

   Last edited by Dante-dan

   Contributor

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   The child session view keeps the subagent picker open, where left/right switch composer tabs. Adding handlers only to the session’s base keymap would still leave them unreachable there. I’m taking the suggested alternative: disable these two unused defaults and mark them deprecated, while retaining their configuration names for compatibility. The picker continues to provide child-session navigation.