From b87849804c03aa244956a6f90a8d9c4e176a1b1b Mon Sep 17 00:00:00 2001
From: dualfroz <me@dualfroz.com>
Date: Wed, 23 Sep 2026 06:25:40 +0200
Subject: [PATCH] test(cursor): expect the astral pair to be whole in the
 mixed-character selection

---
 src/test/integ/multi-byte-chars.test.ts | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/test/integ/multi-byte-chars.test.ts b/src/test/integ/multi-byte-chars.test.ts
index 73354ce..7db3dae 100644
--- a/src/test/integ/multi-byte-chars.test.ts
+++ b/src/test/integ/multi-byte-chars.test.ts
@@ -327,8 +327,10 @@ describe("Multi-width characters", () => {
         await sendVSCodeKeys("v");
         await assertContent({ vsCodeSelections: [new vscode.Selection(0, 0, 0, 1)] }, client);
 
+        // the cursor sits on the astral char, whose two UTF-16 units both belong to
+        // the selection: a, the modifier letter and the pair take offsets 0 to 4
         await sendVSCodeKeys("ll");
-        await assertContent({ vsCodeSelections: [new vscode.Selection(0, 0, 0, 3)] }, client);
+        await assertContent({ vsCodeSelections: [new vscode.Selection(0, 0, 0, 4)] }, client);
 
         await sendVSCodeKeys("l");
         await assertContent({ vsCodeSelections: [new vscode.Selection(0, 0, 0, 5)] }, client);