terminal: check OSC parser for tmux 112 sequences from HN

Saw this on HN:
https://github.com/darrenstarr/VtNetCore/pull/14

I wanted to see if ghostty was vulnerable to it (it is not). But, its a
good example of a weird edge case in the wild and I wanted to make sure
it was redundantly tested. It looks like we read the "spec" (blog posts,
man pages, source of other terminal using tools, etc.) right.

src/terminal/Parser.zig

@@ -607,6 +607,28 @@ test "osc: change window title (end in esc)" {
     }
 }
 
+// https://github.com/darrenstarr/VtNetCore/pull/14
+// Saw this on HN, decided to add a test case because why not.
+test "osc: 112 incomplete sequence" {
+    var p = init();
+    _ = p.next(0x1B);
+    _ = p.next(']');
+    _ = p.next('1');
+    _ = p.next('1');
+    _ = p.next('2');
+
+    {
+        const a = p.next(0x07);
+        try testing.expect(p.state == .ground);
+        try testing.expect(a[0].? == .osc_dispatch);
+        try testing.expect(a[1] == null);
+        try testing.expect(a[2] == null);
+
+        const cmd = a[0].?.osc_dispatch;
+        try testing.expect(cmd == .reset_cursor_color);
+    }
+}
+
 test "print: utf8 2 byte" {
     var p = init();
     var a: [3]?Action = undefined;