Clear pending ghost suggestions before writing the submit newline so inline hints do not appear in scrollback as typed input.

Add a regression test for submitting `ls` when history suggests `ls /bin`.

packages/bare-os-booter/lib/fish-readline.js

@@ -716,6 +716,14 @@ export async function createFishReadLine(ctx, { stdin, stdout, writeScreen }) {
     inlineTabKeySig = ''
   }
 
+  function clearGhostBeforeSubmit() {
+    clearGhostDebounce()
+    ghostRefreshSeq++
+    if (!ghost) return
+    ghost = ''
+    render()
+  }
+
   function applyCurrentCompletionPick() {
     const currentLine = lines[currentLineIndex] || ''
     const cx = lastCompletionCx
@@ -1059,13 +1067,15 @@ export async function createFishReadLine(ctx, { stdin, stdout, writeScreen }) {
         currentLineIndex++
         cursor = 0
         line = lines.join('\n')
+        clearGhostBeforeSubmit()
         stdout.write('\n')
         render()
         return
       }
 
-      stdout.write('\n')
       const cmdToExec = lines.join('\n').trim()
+      clearGhostBeforeSubmit()
+      stdout.write('\n')
       const resolve = pendingResolve
       pendingResolve = null
       historyIndex = -1

packages/bare-os-booter/test.js

@@ -4870,6 +4870,54 @@ test('fish-readline ignores xterm focus in out CSI', async (t) => {
   stdin.end()
 })
 
+test('fish-readline clears ghost hint before submit newline', async (t) => {
+  const stdin = new PassThrough()
+  stdin.isTTY = true
+  stdin.setRawMode = () => {}
+  const out = []
+  const stdout = {
+    columns: 120,
+    rows: 40,
+    write(s) {
+      out.push(String(s))
+    },
+    cursorTo() {},
+    clearLine() {}
+  }
+  const ctx = {
+    vfs: {
+      env: { USER: 'guest' },
+      getcwd: () => '/mnt/myPeers',
+      async readdir() {
+        return []
+      }
+    },
+    env: {},
+    b4a,
+    personalDrive: {
+      async get() {
+        return b4a.from('#1:ls /bin\n')
+      },
+      async put() {}
+    }
+  }
+  const rl = await createFishReadLine(ctx, { stdin, stdout })
+  const p = rl('> ')
+  stdin.write('ls\n')
+  t.is(await p, 'ls')
+
+  const newlineIndex = out.findIndex((s) => s === '\n')
+  t.ok(newlineIndex > 0)
+  const beforeSubmitNewline = out
+    .slice(0, newlineIndex)
+    .map(stripAnsi)
+    .filter(Boolean)
+    .at(-1)
+  t.is(beforeSubmitNewline.endsWith('> ls'), true)
+  t.absent(beforeSubmitNewline.includes('/bin'))
+  stdin.end()
+})
+
 test('fish-readline ^L emits xterm clear sequence', async (t) => {
   const stdin = new PassThrough()
   stdin.isTTY = true