Scroll up / down and scroll region escape sequence not supported

[Moult]

There is a feature where you can set a scroll region and scroll up / down that portion of the screen. This is used in NetHack ttyrecs. See this sample code to demonstrate it:

import sys
import time

# Define helper functions to send escape sequences
def esc(seq):
    sys.stdout.write(f"\x1b[{seq}")
    sys.stdout.flush()

# Clear the screen
esc("2J")  # CSI 2J clears the screen

# Move cursor to home position (1,1)
esc("H")


# Fill the terminal with some text
for i in range(1, 15):
    print(f"Line {i}")

# Set a scroll region from line 2 to 10
esc("2;10r")

# Pause to observe initial state
time.sleep(2)

esc("1S")  # Scroll up 1 line
time.sleep(2)

# Scroll up within the scroll region
# for _ in range(3):
#     esc("1S")  # Scroll up 1 line
#     time.sleep(0.5)

# Scroll down within the scroll region
# for _ in range(2):
#     esc("1T")  # Scroll down 1 line
#     time.sleep(0.5)

# Reset scroll region to full screen
esc("r")

And here is how you can recreate it using pyte:

import pyte

screen = pyte.Screen(80, 20)
stream = pyte.Stream(screen)

asdf = [
b'\x1b[2J', # clear screen
b'\x1b[H', # go to home (1, 1)
]
for data in asdf:
    stream.feed(data.decode('cp437'))

for i in range(1, 15):
    stream.feed(f"Line {i}\r\n")

# stream.do_thing()
stream.feed(b"\x1b[2;10r".decode('cp437')) # Set scroll region
stream.feed(b"\x1b[2T".decode('cp437')) # Scroll down 2 lines
stream.feed(b"\x1b[r".decode('cp437')) # Reset scroll region

for x in screen.display:
    print(repr(x))

Pyte outputs this:

'Line 1                                                                          '
'Line 2                                                                          '
'Line 3                                                                          '
'Line 4                                                                          '
'Line 5                                                                          '
'Line 6                                                                          '
'Line 7                                                                          '
'Line 8                                                                          '
'Line 9                                                                          '
'Line 10                                                                         '
'Line 11                                                                         '
'Line 12                                                                         '
'Line 13                                                                         '
'Line 14                                                                         '
'                                                                                '
'                                                                                '
'                                                                                '
'                                                                                '
'                                                                                '
'                                                                                '

As you can see nothing is scrolled.

[Moult]

Edit: nevermind :)