From 37e3cdd2d281feb2bb403600974289406f891461 Mon Sep 17 00:00:00 2001
From: Mitchell Hashimoto <m@mitchellh.com>
Date: Fri, 4 Sep 2026 09:41:08 -0700
Subject: [PATCH] input: encode alt+escape with MOK2

---
 src/input/function_keys.zig |  3 ++-
 src/input/key_encode.zig    | 22 ++++++++++++++++++++++
 2 files changed, 24 insertions(+), 1 deletion(-)

diff --git a/src/input/function_keys.zig b/src/input/function_keys.zig
index 5390e2f63..b68b26362 100644
--- a/src/input/function_keys.zig
+++ b/src/input/function_keys.zig
@@ -237,7 +237,8 @@ pub const keys = keys: {
 
     result.set(.escape, &.{
         .{ .mods = .{ .shift = true }, .sequence = "\x1b[27;2;27~" },
-        .{ .mods = .{ .alt = true }, .sequence = "\x1b\x1b" },
+        .{ .mods = .{ .alt = true }, .modify_other_keys = .set, .sequence = "\x1b\x1b" },
+        .{ .mods = .{ .alt = true }, .modify_other_keys = .set_other, .sequence = "\x1b[27;3;27~" },
         .{ .mods = .{ .alt = true, .shift = true }, .sequence = "\x1b[27;4;27~" },
         .{ .mods = .{ .ctrl = true }, .sequence = "\x1b[27;5;27~" },
         .{ .mods = .{ .ctrl = true, .shift = true }, .sequence = "\x1b[27;6;27~" },
diff --git a/src/input/key_encode.zig b/src/input/key_encode.zig
index 96eb6dec2..2b0a668ee 100644
--- a/src/input/key_encode.zig
+++ b/src/input/key_encode.zig
@@ -2033,6 +2033,28 @@ test "legacy: esc with utf8 (dead key state)" {
     try testing.expectEqualStrings("A", writer.buffered());
 }
 
+test "legacy: alt+escape with modify other state 2" {
+    var buf: [128]u8 = undefined;
+
+    {
+        var writer: std.Io.Writer = .fixed(&buf);
+        try legacy(&writer, .{
+            .key = .escape,
+            .mods = .{ .alt = true },
+        }, .{});
+        try testing.expectEqualStrings("\x1b\x1b", writer.buffered());
+    }
+
+    {
+        var writer: std.Io.Writer = .fixed(&buf);
+        try legacy(&writer, .{
+            .key = .escape,
+            .mods = .{ .alt = true },
+        }, .{ .modify_other_keys_state_2 = true });
+        try testing.expectEqualStrings("\x1b[27;3;27~", writer.buffered());
+    }
+}
+
 test "legacy: ctrl+shift+minus (underscore on US)" {
     var buf: [128]u8 = undefined;
     var writer: std.Io.Writer = .fixed(&buf);