From db7ffcf9d5f05e35ce8e6070477730f34d58b159 Mon Sep 17 00:00:00 2001
From: Bananymous <oskari.alaranta@bananymous.com>
Date: Tue, 18 Nov 2025 03:07:54 +0200
Subject: [PATCH] Kernel/Terminal: Add support for bracketed paste mode

This gets rid of annoying warnings when running some programs like bash
---
 kernel/kernel/Terminal/VirtualTTY.cpp    |  5 +++++
 userspace/programs/Terminal/Terminal.cpp | 26 +++++++++++++++++++++---
 userspace/programs/Terminal/Terminal.h   |  1 +
 3 files changed, 29 insertions(+), 3 deletions(-)

diff --git a/kernel/kernel/Terminal/VirtualTTY.cpp b/kernel/kernel/Terminal/VirtualTTY.cpp
index 8c1feb1e..713c29b7 100644
--- a/kernel/kernel/Terminal/VirtualTTY.cpp
+++ b/kernel/kernel/Terminal/VirtualTTY.cpp
@@ -417,6 +417,11 @@ namespace Kernel
 					m_cursor_shown = (ch == 'h');
 					return reset_ansi();
 				}
+				if (m_ansi_state.question && m_ansi_state.nums[0] == 2004)
+				{
+					// bracketed paste mode, there is no pasting so this is a no-op
+					return reset_ansi();
+				}
 				reset_ansi();
 				dprintln_if(DEBUG_VTTY, "Unsupported ANSI CSI character {}", static_cast<char>(ch));
 				return;
diff --git a/userspace/programs/Terminal/Terminal.cpp b/userspace/programs/Terminal/Terminal.cpp
index de424d64..098617d6 100644
--- a/userspace/programs/Terminal/Terminal.cpp
+++ b/userspace/programs/Terminal/Terminal.cpp
@@ -274,7 +274,13 @@ void Terminal::run()
 
 					auto clipboard = clipboard_or_error.release_value();
 					if (!clipboard.empty())
+					{
+						if (m_brackted_paste_mode)
+							write(m_shell_info.pts_master, "\e[200~", 6);
 						write(m_shell_info.pts_master, clipboard.data(), clipboard.size());
+						if (m_brackted_paste_mode)
+							write(m_shell_info.pts_master, "\e[201~", 6);
+					}
 					m_got_key_event = true;
 
 					break;
@@ -930,12 +936,26 @@ Rectangle Terminal::handle_csi(char ch)
 			break;
 		case 'h':
 		case 'l':
-			if (!m_csi_info.question || m_csi_info.fields[0] != 25)
+			if (m_csi_info.question)
 			{
-				dprintln("unsupported ANSI CSI {}", ch);
+				switch (m_csi_info.fields[0])
+				{
+					case 25:
+						m_cursor_shown = (ch == 'h');
+						break;
+					case 2004:
+						m_brackted_paste_mode = (ch == 'h');
+						break;
+					default:
+						dwarnln("unsupported ANSI CSI ? {} {}", m_csi_info.fields[0], ch);
+						break;
+				}
+			}
+			else
+			{
+				dwarnln("unsupported ANSI CSI {} {}", m_csi_info.fields[0], ch);
 				break;
 			}
-			m_cursor_shown = (ch == 'h');
 			break;
 		case 'n':
 			if (m_csi_info.fields[0] != 6)
diff --git a/userspace/programs/Terminal/Terminal.h b/userspace/programs/Terminal/Terminal.h
index f6b70e0f..45ef2e61 100644
--- a/userspace/programs/Terminal/Terminal.h
+++ b/userspace/programs/Terminal/Terminal.h
@@ -106,6 +106,7 @@ private:
 	uint32_t m_selection_e_col { UINT32_MAX };
 	uint32_t m_selection_e_row { UINT32_MAX };
 	bool m_selecting { false };
+	bool m_brackted_paste_mode { false };
 
 	bool m_cursor_shown { true };
 	bool m_cursor_blink_shown { true };