feat: add configurable cursor style for TUI textareas

packages/opencode/src/cli/cmd/tui/component/prompt/index.tsx

@@ -713,6 +713,14 @@ export function Prompt(props: PromptProps) {
     return !!current
   })
 
+  const cursorStyle = createMemo(() => {
+    const tui = sync.data.config.tui
+    return {
+      style: (tui?.cursor_style ?? "block") as "block" | "line" | "underline",
+      blinking: tui?.cursor_blink ?? true,
+    }
+  })
+
   const spinnerDef = createMemo(() => {
     const color = local.agent.color(local.agent.current().name)
     return {
@@ -948,6 +956,7 @@ export function Prompt(props: PromptProps) {
               onMouseDown={(r: MouseEvent) => r.target?.focus()}
               focusedBackgroundColor={theme.backgroundElement}
               cursorColor={theme.text}
+              cursorStyle={cursorStyle()}
               syntaxStyle={syntax()}
             />
             <box flexDirection="row" flexShrink={0} paddingTop={1} gap={1}>

packages/opencode/src/cli/cmd/tui/routes/session/permission.tsx

@@ -306,6 +306,15 @@ function RejectPrompt(props: { onConfirm: (message: string) => void; onCancel: (
   const dimensions = useTerminalDimensions()
   const narrow = createMemo(() => dimensions().width < 80)
   const dialog = useDialog()
+  const sync = useSync()
+
+  const cursorStyle = createMemo(() => {
+    const tui = sync.data.config.tui
+    return {
+      style: (tui?.cursor_style ?? "block") as "block" | "line" | "underline",
+      blinking: tui?.cursor_blink ?? true,
+    }
+  })
 
   useKeyboard((evt) => {
     if (dialog.stack.length > 0) return
@@ -355,6 +364,7 @@ function RejectPrompt(props: { onConfirm: (message: string) => void; onCancel: (
           textColor={theme.text}
           focusedTextColor={theme.text}
           cursorColor={theme.primary}
+          cursorStyle={cursorStyle()}
           keyBindings={textareaKeybindings()}
         />
         <box flexDirection="row" gap={2} flexShrink={0}>

packages/opencode/src/cli/cmd/tui/routes/session/question.tsx

@@ -4,6 +4,7 @@ import { useKeyboard } from "@opentui/solid"
 import type { TextareaRenderable } from "@opentui/core"
 import { useKeybind } from "../../context/keybind"
 import { selectedForeground, tint, useTheme } from "../../context/theme"
+import { useSync } from "../../context/sync"
 import type { QuestionAnswer, QuestionRequest } from "@opencode-ai/sdk/v2"
 import { useSDK } from "../../context/sdk"
 import { SplitBorder } from "../../component/border"
@@ -15,6 +16,7 @@ export function QuestionPrompt(props: { request: QuestionRequest }) {
   const { theme } = useTheme()
   const keybind = useKeybind()
   const bindings = useTextareaKeybindings()
+  const sync = useSync()
 
   const questions = createMemo(() => props.request.questions)
   const single = createMemo(() => questions().length === 1 && questions()[0]?.multiple !== true)
@@ -41,6 +43,13 @@ export function QuestionPrompt(props: { request: QuestionRequest }) {
     if (!value) return false
     return store.answers[store.tab]?.includes(value) ?? false
   })
+  const cursorStyle = createMemo(() => {
+    const tui = sync.data.config.tui
+    return {
+      style: (tui?.cursor_style ?? "block") as "block" | "line" | "underline",
+      blinking: tui?.cursor_blink ?? true,
+    }
+  })
 
   function submit() {
     const answers = questions().map((_, i) => store.answers[i] ?? [])
@@ -379,6 +388,7 @@ export function QuestionPrompt(props: { request: QuestionRequest }) {
                         textColor={theme.text}
                         focusedTextColor={theme.text}
                         cursorColor={theme.primary}
+                        cursorStyle={cursorStyle()}
                         keyBindings={bindings()}
                       />
                     </box>

packages/opencode/src/cli/cmd/tui/ui/dialog-export-options.tsx

@@ -2,8 +2,9 @@ import { TextareaRenderable, TextAttributes } from "@opentui/core"
 import { useTheme } from "../context/theme"
 import { useDialog, type DialogContext } from "./dialog"
 import { createStore } from "solid-js/store"
-import { onMount, Show, type JSX } from "solid-js"
+import { createMemo, onMount, Show, type JSX } from "solid-js"
 import { useKeyboard } from "@opentui/solid"
+import { useSync } from "../context/sync"
 
 export type DialogExportOptionsProps = {
   defaultFilename: string
@@ -24,7 +25,17 @@ export type DialogExportOptionsProps = {
 export function DialogExportOptions(props: DialogExportOptionsProps) {
   const dialog = useDialog()
   const { theme } = useTheme()
+  const sync = useSync()
   let textarea: TextareaRenderable
+
+  const cursorStyle = createMemo(() => {
+    const tui = sync.data.config.tui
+    return {
+      style: (tui?.cursor_style ?? "block") as "block" | "line" | "underline",
+      blinking: tui?.cursor_blink ?? true,
+    }
+  })
+
   const [store, setStore] = createStore({
     thinking: props.defaultThinking,
     toolDetails: props.defaultToolDetails,
@@ -104,6 +115,7 @@ export function DialogExportOptions(props: DialogExportOptionsProps) {
           textColor={theme.text}
           focusedTextColor={theme.text}
           cursorColor={theme.text}
+          cursorStyle={cursorStyle()}
         />
       </box>
       <box flexDirection="column">

packages/opencode/src/cli/cmd/tui/ui/dialog-prompt.tsx

@@ -1,8 +1,9 @@
 import { TextareaRenderable, TextAttributes } from "@opentui/core"
 import { useTheme } from "../context/theme"
 import { useDialog, type DialogContext } from "./dialog"
-import { onMount, type JSX } from "solid-js"
+import { createMemo, onMount, type JSX } from "solid-js"
 import { useKeyboard } from "@opentui/solid"
+import { useSync } from "../context/sync"
 
 export type DialogPromptProps = {
   title: string
@@ -16,8 +17,17 @@ export type DialogPromptProps = {
 export function DialogPrompt(props: DialogPromptProps) {
   const dialog = useDialog()
   const { theme } = useTheme()
+  const sync = useSync()
   let textarea: TextareaRenderable
 
+  const cursorStyle = createMemo(() => {
+    const tui = sync.data.config.tui
+    return {
+      style: (tui?.cursor_style ?? "block") as "block" | "line" | "underline",
+      blinking: tui?.cursor_blink ?? true,
+    }
+  })
+
   useKeyboard((evt) => {
     if (evt.name === "return") {
       props.onConfirm?.(textarea.plainText)
@@ -55,6 +65,7 @@ export function DialogPrompt(props: DialogPromptProps) {
           textColor={theme.text}
           focusedTextColor={theme.text}
           cursorColor={theme.text}
+          cursorStyle={cursorStyle()}
         />
       </box>
       <box paddingBottom={1} gap={1} flexDirection="row">

packages/opencode/src/config/config.ts

@@ -829,6 +829,11 @@ export namespace Config {
       ref: "KeybindsConfig",
     })
 
+  export const CursorStyle = z.enum(["block", "line", "underline"]).meta({
+    ref: "CursorStyleConfig",
+  })
+  export type CursorStyle = z.infer<typeof CursorStyle>
+
   export const TUI = z.object({
     scroll_speed: z.number().min(0.001).optional().describe("TUI scroll speed"),
     scroll_acceleration: z
@@ -841,6 +846,8 @@ export namespace Config {
       .enum(["auto", "stacked"])
       .optional()
       .describe("Control diff rendering style: 'auto' adapts to terminal width, 'stacked' always shows single column"),
+    cursor_style: CursorStyle.optional().describe("Cursor shape in text inputs: 'block', 'line', or 'underline'"),
+    cursor_blink: z.boolean().optional().describe("Enable cursor blinking in text inputs"),
   })
 
   export const Server = z

packages/sdk/js/src/v2/gen/types.gen.ts

@@ -1315,6 +1315,11 @@ export type KeybindsConfig = {
  */
 export type LogLevel = "DEBUG" | "INFO" | "WARN" | "ERROR"
 
+/**
+ * Cursor shape in text inputs: 'block', 'line', or 'underline'
+ */
+export type CursorStyleConfig = "block" | "line" | "underline"
+
 /**
  * Server configuration for opencode serve and web commands
  */
@@ -1620,6 +1625,11 @@ export type Config = {
      * Control diff rendering style: 'auto' adapts to terminal width, 'stacked' always shows single column
      */
     diff_style?: "auto" | "stacked"
+    cursor_style?: CursorStyleConfig
+    /**
+     * Enable cursor blinking in text inputs
+     */
+    cursor_blink?: boolean
   }
   server?: ServerConfig
   /**