From 7421e78f1eacdd4a53feb8582f5eaeb11bc82b1b Mon Sep 17 00:00:00 2001
From: Mitchell Hashimoto <m@mitchellh.com>
Date: Fri, 23 Jan 2026 13:42:23 -0800
Subject: [PATCH] terminal/osc: semantic prompt 'I'

---
 src/terminal/osc/parsers/semantic_prompt2.zig | 44 +++++++++++++++++++
 1 file changed, 44 insertions(+)

diff --git a/src/terminal/osc/parsers/semantic_prompt2.zig b/src/terminal/osc/parsers/semantic_prompt2.zig
index d2547abe4..7dfc01b3e 100644
--- a/src/terminal/osc/parsers/semantic_prompt2.zig
+++ b/src/terminal/osc/parsers/semantic_prompt2.zig
@@ -11,6 +11,7 @@ pub const Command = union(enum) {
     new_command: Options,
     prompt_start: Options,
     end_prompt_start_input: Options,
+    end_prompt_start_input_terminate_eol: Options,
 };
 
 pub const Options = struct {
@@ -109,6 +110,14 @@ pub fn parse(parser: *Parser, _: ?u8) ?*OSCCommand {
                 parser.command.semantic_prompt.end_prompt_start_input.parse(&it);
             },
 
+            'I' => end_prompt_line: {
+                parser.command = .{ .semantic_prompt = .{ .end_prompt_start_input_terminate_eol = .init } };
+                if (data.len == 1) break :end_prompt_line;
+                if (data[1] != ';') break :valid;
+                var it = KVIterator.init(writer) catch break :valid;
+                parser.command.semantic_prompt.end_prompt_start_input_terminate_eol.parse(&it);
+            },
+
             'L' => {
                 if (data.len > 1) break :valid;
                 parser.command = .{ .semantic_prompt = .fresh_line };
@@ -570,3 +579,38 @@ test "OSC 133: end_prompt_start_input with options" {
     try testing.expect(cmd.semantic_prompt == .end_prompt_start_input);
     try testing.expectEqualStrings("foo", cmd.semantic_prompt.end_prompt_start_input.aid.?);
 }
+
+test "OSC 133: end_prompt_start_input_terminate_eol" {
+    const testing = std.testing;
+
+    var p: Parser = .init(null);
+
+    const input = "133;I";
+    for (input) |ch| p.next(ch);
+
+    const cmd = p.end(null).?.*;
+    try testing.expect(cmd == .semantic_prompt);
+    try testing.expect(cmd.semantic_prompt == .end_prompt_start_input_terminate_eol);
+}
+
+test "OSC 133: end_prompt_start_input_terminate_eol extra contents" {
+    const testing = std.testing;
+
+    var p: Parser = .init(null);
+    const input = "133;Iextra";
+    for (input) |ch| p.next(ch);
+    try testing.expect(p.end(null) == null);
+}
+
+test "OSC 133: end_prompt_start_input_terminate_eol with options" {
+    const testing = std.testing;
+
+    var p: Parser = .init(null);
+    const input = "133;I;aid=foo";
+    for (input) |ch| p.next(ch);
+
+    const cmd = p.end(null).?.*;
+    try testing.expect(cmd == .semantic_prompt);
+    try testing.expect(cmd.semantic_prompt == .end_prompt_start_input_terminate_eol);
+    try testing.expectEqualStrings("foo", cmd.semantic_prompt.end_prompt_start_input_terminate_eol.aid.?);
+}