kitty/kitty_tests/parser.py
Kovid Goyal 8f214c51c0
Get rid of kitty's special OSC 52 protocol
A better solution from an ecosystem perspective is to just work with the
original protocol. I have modified kitty's escape parser to special case
OSC 52 handling without changing its max escape code size.

Basically, it works by splitting up OSC 52 escape codes longer than the
max size into a series of partial OSC 52 escape codes. These get
dispatched to the UI layer where it accumulates them upto the 8MB limit
and then sends to clipboard when the partial sequence ends.

See https://github.com/ranger/ranger/issues/1861
2021-07-23 22:18:02 +05:30

481 lines
22 KiB
Python

#!/usr/bin/env python3
# vim:fileencoding=utf-8
# License: GPL v3 Copyright: 2016, Kovid Goyal <kovid at kovidgoyal.net>
import time
from base64 import standard_b64encode
from binascii import hexlify
from functools import partial
from kitty.fast_data_types import CURSOR_BLOCK, parse_bytes, parse_bytes_dump
from kitty.notify import (
NotificationCommand, handle_notification_cmd, notification_activated,
reset_registry
)
from . import BaseTest
class CmdDump(list):
def __call__(self, *a):
self.append(a)
class TestParser(BaseTest):
def parse_bytes_dump(self, s, x, *cmds):
cd = CmdDump()
if isinstance(x, str):
x = x.encode('utf-8')
cmds = tuple(('draw', x) if isinstance(x, str) else x for x in cmds)
parse_bytes_dump(cd, s, x)
current = ''
q = []
for args in cd:
if args[0] == 'draw':
if args[1] is not None:
current += args[1]
else:
if current:
q.append(('draw', current))
current = ''
q.append(args)
if current:
q.append(('draw', current))
self.ae(tuple(q), cmds)
def test_simple_parsing(self):
s = self.create_screen()
pb = partial(self.parse_bytes_dump, s)
pb('12', '12')
self.ae(str(s.line(0)), '12')
self.ae(s.cursor.x, 2)
pb('3456', '3456')
self.ae(str(s.line(0)), '12345')
self.ae(str(s.line(1)), '6')
pb(b'\n123\n\r45', ('screen_linefeed',), '123', ('screen_linefeed',), ('screen_carriage_return',), '45')
self.ae(str(s.line(1)), '6')
self.ae(str(s.line(2)), ' 123')
self.ae(str(s.line(3)), '45')
parse_bytes(s, b'\rabcde')
self.ae(str(s.line(3)), 'abcde')
pb('\rßxyz1', ('screen_carriage_return',), 'ßxyz1')
self.ae(str(s.line(3)), 'ßxyz1')
pb('ニチ ', 'ニチ ')
self.ae(str(s.line(4)), 'ニチ ')
def test_esc_codes(self):
s = self.create_screen()
pb = partial(self.parse_bytes_dump, s)
pb('12\033Da', '12', ('screen_index',), 'a')
self.ae(str(s.line(0)), '12')
self.ae(str(s.line(1)), ' a')
pb('\033x', ('Unknown char after ESC: 0x%x' % ord('x'),))
pb('\033c123', ('screen_reset', ), '123')
self.ae(str(s.line(0)), '123')
def test_charsets(self):
s = self.create_screen()
pb = partial(self.parse_bytes_dump, s)
pb(b'\xc3')
pb(b'\xa1', ('draw', b'\xc3\xa1'.decode('utf-8')))
s = self.create_screen()
pb = partial(self.parse_bytes_dump, s)
pb('\033)0\x0e/_', ('screen_designate_charset', 1, ord('0')), ('screen_change_charset', 1), '/_')
self.ae(str(s.line(0)), '/\xa0')
self.assertTrue(s.callbacks.iutf8)
pb('\033%@_', ('screen_use_latin1', 1), '_')
self.assertFalse(s.callbacks.iutf8)
s = self.create_screen()
pb = partial(self.parse_bytes_dump, s)
pb('\033(0/_', ('screen_designate_charset', 0, ord('0')), '/_')
self.ae(str(s.line(0)), '/\xa0')
def test_csi_codes(self):
s = self.create_screen()
pb = partial(self.parse_bytes_dump, s)
pb('abcde', 'abcde')
s.cursor_back(5)
pb('x\033[2@y', 'x', ('screen_insert_characters', 2), 'y')
self.ae(str(s.line(0)), 'xy bc')
pb('x\033[2;7@y', 'x', ('CSI code @ has 2 > 1 parameters',), 'y')
pb('x\033[2;-7@y', 'x', ('CSI code @ has 2 > 1 parameters',), 'y')
pb('x\033[-2@y', 'x', ('CSI code @ is not allowed to have negative parameter (-2)',), 'y')
pb('x\033[2-3@y', 'x', ('CSI code can contain hyphens only at the start of numbers',), 'y')
pb('x\033[@y', 'x', ('screen_insert_characters', 1), 'y')
pb('x\033[345@y', 'x', ('screen_insert_characters', 345), 'y')
pb('x\033[345;@y', 'x', ('screen_insert_characters', 345), 'y')
pb('\033[H', ('screen_cursor_position', 1, 1))
self.ae(s.cursor.x, 0), self.ae(s.cursor.y, 0)
pb('\033[4H', ('screen_cursor_position', 4, 1))
pb('\033[4;0H', ('screen_cursor_position', 4, 0))
pb('\033[3;2H', ('screen_cursor_position', 3, 2))
pb('\033[3;2;H', ('screen_cursor_position', 3, 2))
pb('\033[00000000003;0000000000000002H', ('screen_cursor_position', 3, 2))
self.ae(s.cursor.x, 1), self.ae(s.cursor.y, 2)
pb('\033[J', ('screen_erase_in_display', 0, 0))
pb('\033[?J', ('screen_erase_in_display', 0, 1))
pb('\033[?2J', ('screen_erase_in_display', 2, 1))
pb('\033[h')
pb('\033[20;4h', ('screen_set_mode', 20, 0), ('screen_set_mode', 4, 0))
pb('\033[?1000;1004h', ('screen_set_mode', 1000, 1), ('screen_set_mode', 1004, 1))
pb('\033[20;4;20l', ('screen_reset_mode', 20, 0), ('screen_reset_mode', 4, 0), ('screen_reset_mode', 20, 0))
pb('\033[=c', ('report_device_attributes', 0, 61))
s.reset()
def sgr(params):
return (('select_graphic_rendition', '{} '.format(x)) for x in params.split())
pb('\033[1;2;3;4;7;9;34;44m', *sgr('1 2 3 4 7 9 34 44'))
for attr in 'bold italic reverse strikethrough dim'.split():
self.assertTrue(getattr(s.cursor, attr))
self.ae(s.cursor.decoration, 1)
self.ae(s.cursor.fg, 4 << 8 | 1)
self.ae(s.cursor.bg, 4 << 8 | 1)
pb('\033[38;5;1;48;5;7m', ('select_graphic_rendition', '38 5 1 '), ('select_graphic_rendition', '48 5 7 '))
self.ae(s.cursor.fg, 1 << 8 | 1)
self.ae(s.cursor.bg, 7 << 8 | 1)
pb('\033[38;2;1;2;3;48;2;7;8;9m', ('select_graphic_rendition', '38 2 1 2 3 '), ('select_graphic_rendition', '48 2 7 8 9 '))
self.ae(s.cursor.fg, 1 << 24 | 2 << 16 | 3 << 8 | 2)
self.ae(s.cursor.bg, 7 << 24 | 8 << 16 | 9 << 8 | 2)
pb('\033[0;2m', *sgr('0 2'))
pb('\033[;2m', *sgr('0 2'))
pb('\033[m', *sgr('0 '))
pb('\033[1;;2m', *sgr('1 0 2'))
pb('\033[38;5;1m', ('select_graphic_rendition', '38 5 1 '))
pb('\033[58;2;1;2;3m', ('select_graphic_rendition', '58 2 1 2 3 '))
pb('\033[38;2;1;2;3m', ('select_graphic_rendition', '38 2 1 2 3 '))
pb('\033[1001:2:1:2:3m', ('select_graphic_rendition', '1001 2 1 2 3 '))
pb('\033[38:2:1:2:3;48:5:9;58;5;7m', (
'select_graphic_rendition', '38 2 1 2 3 '), ('select_graphic_rendition', '48 5 9 '), ('select_graphic_rendition', '58 5 7 '))
c = s.callbacks
pb('\033[5n', ('report_device_status', 5, 0))
self.ae(c.wtcbuf, b'\033[0n')
c.clear()
pb('\033[6n', ('report_device_status', 6, 0))
self.ae(c.wtcbuf, b'\033[1;1R')
pb('12345', '12345')
c.clear()
pb('\033[6n', ('report_device_status', 6, 0))
self.ae(c.wtcbuf, b'\033[2;1R')
c.clear()
s.cursor_key_mode = True
pb('\033[?1$p', ('report_mode_status', 1, 1))
self.ae(c.wtcbuf, b'\033[?1;1$y')
pb('\033[?1l', ('screen_reset_mode', 1, 1))
self.assertFalse(s.cursor_key_mode)
c.clear()
pb('\033[?1$p', ('report_mode_status', 1, 1))
self.ae(c.wtcbuf, b'\033[?1;2$y')
pb('\033[2;4r', ('screen_set_margins', 2, 4))
c.clear()
pb('\033[14t', ('screen_report_size', 14))
self.ae(c.wtcbuf, b'\033[4;100;50t')
self.ae(s.margin_top, 1), self.ae(s.margin_bottom, 3)
pb('\033[r', ('screen_set_margins', 0, 0))
self.ae(s.margin_top, 0), self.ae(s.margin_bottom, 4)
pb('\033[1 q', ('screen_set_cursor', 1, ord(' ')))
self.assertTrue(s.cursor.blink)
self.ae(s.cursor.shape, CURSOR_BLOCK)
s.reset()
pb('\033[3 @', ('Shift left escape code not implemented',))
pb('\033[3 A', ('Shift right escape code not implemented',))
pb('\033[3;4 S', ('Select presentation directions escape code not implemented',))
pb('\033[1T', ('screen_reverse_scroll', 1))
pb('\033[T', ('screen_reverse_scroll', 1))
pb('\033[+T', ('screen_reverse_scroll_and_fill_from_scrollback', 1))
def test_csi_code_rep(self):
s = self.create_screen(8)
pb = partial(self.parse_bytes_dump, s)
pb('\033[1b', ('screen_repeat_character', 1))
self.ae(str(s.line(0)), '')
pb('x\033[7b', 'x', ('screen_repeat_character', 7))
self.ae(str(s.line(0)), 'xxxxxxxx')
pb('\033[1;3H', ('screen_cursor_position', 1, 3))
pb('\033[byz\033[b', ('screen_repeat_character', 1), 'yz', ('screen_repeat_character', 1))
# repeat 'x' at 3, then 'yz' at 4-5, then repeat 'z' at 6
self.ae(str(s.line(0)), 'xxxyzzxx')
s.reset()
pb(' \033[3b', ' ', ('screen_repeat_character', 3))
self.ae(str(s.line(0)), ' ')
s.reset()
pb('\t\033[b', ('screen_tab',), ('screen_repeat_character', 1))
self.ae(str(s.line(0)), '\t')
s.reset()
b']]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]'
def test_osc_codes(self):
s = self.create_screen()
pb = partial(self.parse_bytes_dump, s)
c = s.callbacks
pb('a\033]2;x\\ryz\x9cbcde', 'a', ('set_title', 'x\\ryz'), 'bcde')
self.ae(str(s.line(0)), 'abcde')
self.ae(c.titlebuf, 'x\\ryz')
c.clear()
pb('\033]\x07', ('set_title', ''), ('set_icon', ''))
self.ae(c.titlebuf, ''), self.ae(c.iconbuf, '')
pb('\033]ab\x07', ('set_title', 'ab'), ('set_icon', 'ab'))
self.ae(c.titlebuf, 'ab'), self.ae(c.iconbuf, 'ab')
c.clear()
pb('\033]2;;;;\x07', ('set_title', ';;;'))
self.ae(c.titlebuf, ';;;')
c.clear()
pb('\033]2;\x07', ('set_title', ''))
self.ae(c.titlebuf, '')
pb('\033]110\x07', ('set_dynamic_color', 110, ''))
self.ae(c.colorbuf, '')
c.clear()
pb('\033]9;\x07', ('desktop_notify', 9, ''))
pb('\033]9;test it\x07', ('desktop_notify', 9, 'test it'))
pb('\033]99;moo=foo;test it\x07', ('desktop_notify', 99, 'moo=foo;test it'))
self.ae(c.notifications, [(9, ''), (9, 'test it'), (99, 'moo=foo;test it')])
c.clear()
pb('\033]8;;\x07', ('set_active_hyperlink', None, None))
pb('\033]8moo\x07', ('Ignoring malformed OSC 8 code',))
pb('\033]8;moo\x07', ('Ignoring malformed OSC 8 code',))
pb('\033]8;id=xyz;\x07', ('set_active_hyperlink', 'xyz', None))
pb('\033]8;moo:x=z:id=xyz:id=abc;http://yay;.com\x07', ('set_active_hyperlink', 'xyz', 'http://yay;.com'))
c.clear()
payload = '1' * 1024
pb(f'\033]52;p;{payload}\x07', ('clipboard_control', 52, f'p;{payload}'))
c.clear()
pb('\033]52;p;xyz\x07', ('clipboard_control', 52, 'p;xyz'))
def test_desktop_notify(self):
reset_registry()
notifications = []
activations = []
prev_cmd = NotificationCommand()
def reset():
nonlocal prev_cmd
reset_registry()
del notifications[:]
del activations[:]
prev_cmd = NotificationCommand()
def notify(title, body, identifier):
notifications.append((title, body, identifier))
def h(raw_data, osc_code=99, window_id=1):
nonlocal prev_cmd
x = handle_notification_cmd(osc_code, raw_data, window_id, prev_cmd, notify)
if x is not None and osc_code == 99:
prev_cmd = x
def activated(identifier, window_id, focus, report):
activations.append((identifier, window_id, focus, report))
h('test it', osc_code=9)
self.ae(notifications, [('test it', '', 'i0')])
notification_activated(notifications[-1][-1], activated)
self.ae(activations, [('0', 1, True, False)])
reset()
h('d=0:i=x;title')
h('d=1:i=x:p=body;body')
self.ae(notifications, [('title', 'body', 'i0')])
notification_activated(notifications[-1][-1], activated)
self.ae(activations, [('x', 1, True, False)])
reset()
h('i=x:p=body:a=-focus;body')
self.ae(notifications, [('body', '', 'i0')])
notification_activated(notifications[-1][-1], activated)
self.ae(activations, [])
reset()
h('i=x:e=1;' + standard_b64encode(b'title').decode('ascii'))
self.ae(notifications, [('title', '', 'i0')])
notification_activated(notifications[-1][-1], activated)
self.ae(activations, [('x', 1, True, False)])
reset()
h('d=0:i=x:a=-report;title')
h('d=1:i=x:a=report;body')
self.ae(notifications, [('titlebody', '', 'i0')])
notification_activated(notifications[-1][-1], activated)
self.ae(activations, [('x', 1, True, True)])
reset()
h(';title')
self.ae(notifications, [('title', '', 'i0')])
notification_activated(notifications[-1][-1], activated)
self.ae(activations, [('0', 1, True, False)])
reset()
def test_dcs_codes(self):
s = self.create_screen()
c = s.callbacks
pb = partial(self.parse_bytes_dump, s)
q = hexlify(b'kind').decode('ascii')
pb('a\033P+q{}\x9cbcde'.format(q), 'a', ('screen_request_capabilities', 43, q), 'bcde')
self.ae(str(s.line(0)), 'abcde')
self.ae(c.wtcbuf, '1+r{}={}'.format(q, '1b5b313b3242').encode('ascii'))
c.clear()
pb('\033P$q q\033\\', ('screen_request_capabilities', ord('$'), ' q'))
self.ae(c.wtcbuf, b'\033P1$r1 q\033\\')
c.clear()
pb('\033P$qm\033\\', ('screen_request_capabilities', ord('$'), 'm'))
self.ae(c.wtcbuf, b'\033P1$rm\033\\')
for sgr in '0;34;102;1;2;3;4 0;38:5:200;58:2:10:11:12'.split():
expected = set(sgr.split(';')) - {'0'}
c.clear()
parse_bytes(s, '\033[{}m\033P$qm\033\\'.format(sgr).encode('ascii'))
r = c.wtcbuf.decode('ascii').partition('r')[2].partition('m')[0]
self.ae(expected, set(r.split(';')))
c.clear()
pb('\033P$qr\033\\', ('screen_request_capabilities', ord('$'), 'r'))
self.ae(c.wtcbuf, '\033P1$r{};{}r\033\\'.format(s.margin_top + 1, s.margin_bottom + 1).encode('ascii'))
def test_sc81t(self):
s = self.create_screen()
pb = partial(self.parse_bytes_dump, s)
pb('\033 G', ('screen_set_8bit_controls', 1))
c = s.callbacks
pb('\033P$qm\033\\', ('screen_request_capabilities', ord('$'), 'm'))
self.ae(c.wtcbuf, b'\x901$rm\x9c')
c.clear()
pb('\033[0c', ('report_device_attributes', 0, 0))
self.ae(c.wtcbuf, b'\x9b?62;c')
def test_pending(self):
s = self.create_screen()
timeout = 0.1
s.set_pending_timeout(timeout)
pb = partial(self.parse_bytes_dump, s)
pb('\033P=1s\033\\', ('screen_start_pending_mode',))
pb('a')
self.ae(str(s.line(0)), '')
pb('\033P=2s\033\\', ('draw', 'a'), ('screen_stop_pending_mode',))
self.ae(str(s.line(0)), 'a')
pb('\033P=1s\033\\', ('screen_start_pending_mode',))
pb('b')
self.ae(str(s.line(0)), 'a')
time.sleep(timeout)
pb('c', ('draw', 'bc'))
self.ae(str(s.line(0)), 'abc')
pb('\033P=1s\033\\d', ('screen_start_pending_mode',))
pb('\033P=2s\033\\', ('draw', 'd'), ('screen_stop_pending_mode',))
pb('\033P=1s\033\\e', ('screen_start_pending_mode',))
pb('\033P'), pb('='), pb('2s')
pb('\033\\', ('draw', 'e'), ('screen_stop_pending_mode',))
pb('\033P=1sxyz;.;\033\\''\033P=2skjf".,><?_+)98\033\\', ('screen_start_pending_mode',))
pb('\033P=1s\033\\f\033P=1s\033\\', ('screen_start_pending_mode',), ('screen_start_pending_mode',))
pb('\033P=2s\033\\', ('draw', 'f'), ('screen_stop_pending_mode',))
pb('\033P=1s\033\\XXX\033P=2s\033\\', ('screen_start_pending_mode',), ('draw', 'XXX'), ('screen_stop_pending_mode',))
pb('\033[?2026hXXX\033[?2026l', ('screen_set_mode', 2026, 1), ('draw', 'XXX'), ('screen_reset_mode', 2026, 1))
pb('\033[?2026h\033[32ma\033[?2026l', ('screen_set_mode', 2026, 1), ('select_graphic_rendition', '32 '), ('draw', 'a'), ('screen_reset_mode', 2026, 1))
pb('\033[?2026h\033P+q544e\033\\ama\033P=2s\033\\',
('screen_set_mode', 2026, 1), ('screen_request_capabilities', 43, '544e'), ('draw', 'ama'), ('screen_stop_pending_mode',))
pb('\033P=1s\033\\\033(B\033P=2s\033\\', ('screen_start_pending_mode',), ('screen_designate_charset', 0, 66), ('screen_stop_pending_mode',))
s.reset()
s.set_pending_timeout(timeout)
pb('\033[?2026h', ('screen_set_mode', 2026, 1),)
pb('\033P+q')
time.sleep(1.2 * timeout)
pb(
'544e' + '\033\\\033P=2s\033\\',
('screen_request_capabilities', 43, '544e'),
('Pending mode stop command issued while not in pending mode, this can be '
'either a bug in the terminal application or caused by a timeout with no '
'data received for too long or by too much data in pending mode',),
('screen_stop_pending_mode',)
)
self.assertEqual(str(s.line(0)), '')
def test_oth_codes(self):
s = self.create_screen()
pb = partial(self.parse_bytes_dump, s)
for prefix in '\033_', '\u009f':
for suffix in '\u009c', '\033\\':
pb('a{}+\\++{}bcde'.format(prefix, suffix), ('draw', 'a'), ('Unrecognized APC code: 0x2b',), ('draw', 'bcde'))
for prefix in '\033^', '\u009e':
for suffix in '\u009c', '\033\\':
pb('a{}+\\++{}bcde'.format(prefix, suffix), ('draw', 'a'), ('Unrecognized PM code: 0x2b',), ('draw', 'bcde'))
def test_graphics_command(self):
from base64 import standard_b64encode
def enc(x):
return standard_b64encode(x.encode('utf-8') if isinstance(x, str) else x).decode('ascii')
def c(**k):
for p, v in tuple(k.items()):
if isinstance(v, str) and p != 'payload':
k[p] = v.encode('ascii')
for f in 'action delete_action transmission_type compressed'.split():
k.setdefault(f, b'\0')
for f in ('format more id data_sz data_offset width height x_offset y_offset data_height data_width cursor_movement'
' num_cells num_lines cell_x_offset cell_y_offset z_index placement_id image_number quiet').split():
k.setdefault(f, 0)
p = k.pop('payload', '').encode('utf-8')
k['payload_sz'] = len(p)
return ('graphics_command', k, p)
def t(cmd, **kw):
pb('\033_G{};{}\033\\'.format(cmd, enc(kw.get('payload', ''))), c(**kw))
def e(cmd, err):
pb('\033_G{}\033\\'.format(cmd), (err,))
s = self.create_screen()
pb = partial(self.parse_bytes_dump, s)
uint32_max = 2**32 - 1
t('i=%d' % uint32_max, id=uint32_max)
t('i=3,p=4', id=3, placement_id=4)
e('i=%d' % (uint32_max + 1), 'Malformed GraphicsCommand control block, number is too large')
pb('\033_Gi=12\033\\', c(id=12))
t('a=t,t=d,s=100,z=-9', payload='X', action='t', transmission_type='d', data_width=100, z_index=-9, payload_sz=1)
t('a=t,t=d,s=100,z=9', payload='payload', action='t', transmission_type='d', data_width=100, z_index=9, payload_sz=7)
t('a=t,t=d,s=100,z=9,q=2', action='t', transmission_type='d', data_width=100, z_index=9, quiet=2)
e(',s=1', 'Malformed GraphicsCommand control block, invalid key character: 0x2c')
e('W=1', 'Malformed GraphicsCommand control block, invalid key character: 0x57')
e('1=1', 'Malformed GraphicsCommand control block, invalid key character: 0x31')
e('a=t,,w=2', 'Malformed GraphicsCommand control block, invalid key character: 0x2c')
e('s', 'Malformed GraphicsCommand control block, no = after key')
e('s=', 'Malformed GraphicsCommand control block, expecting an integer value')
e('s==', 'Malformed GraphicsCommand control block, expecting an integer value for key: s')
e('s=1=', 'Malformed GraphicsCommand control block, expecting a comma or semi-colon after a value, found: 0x3d')
def test_deccara(self):
s = self.create_screen()
pb = partial(self.parse_bytes_dump, s)
pb('\033[$r', ('deccara', '0 0 0 0 0 '))
pb('\033[;;;;4:3;38:5:10;48:2:1:2:3;1$r',
('deccara', '0 0 0 0 4 3 '), ('deccara', '0 0 0 0 38 5 10 '), ('deccara', '0 0 0 0 48 2 1 2 3 '), ('deccara', '0 0 0 0 1 '))
for y in range(s.lines):
line = s.line(y)
for x in range(s.columns):
c = line.cursor_from(x)
self.ae(c.bold, True)
self.ae(c.italic, False)
self.ae(c.decoration, 3)
self.ae(c.fg, (10 << 8) | 1)
self.ae(c.bg, (1 << 24 | 2 << 16 | 3 << 8 | 2))
self.ae(s.line(0).cursor_from(0).bold, True)
pb('\033[1;2;2;3;22;39$r', ('deccara', '1 2 2 3 22 '), ('deccara', '1 2 2 3 39 '))
self.ae(s.line(0).cursor_from(0).bold, True)
line = s.line(0)
for x in range(1, s.columns):
c = line.cursor_from(x)
self.ae(c.bold, False)
self.ae(c.fg, 0)
line = s.line(1)
for x in range(0, 3):
c = line.cursor_from(x)
self.ae(c.bold, False)
self.ae(line.cursor_from(3).bold, True)
pb('\033[2*x\033[3;2;4;3;34$r\033[*x', ('screen_decsace', 2), ('deccara', '3 2 4 3 34 '), ('screen_decsace', 0))
for y in range(2, 4):
line = s.line(y)
for x in range(s.columns):
self.ae(line.cursor_from(x).fg, (10 << 8 | 1) if x < 1 or x > 2 else (4 << 8) | 1)