relax fingerprinting a hair

Author: jquast

telnetlib3/server_fingerprinting.py

@@ -108,10 +108,10 @@
 _ANSI_STRIP_RE = re.compile(_ZERO_WIDTH_STR_PATTERN.pattern.encode("ascii"))
 
 # Match "Press [.ESC.] twice" botcheck prompts (e.g. Mystic BBS).
-_ESC_TWICE_RE = re.compile(rb"(?i)press\s+[\[<]?\.?esc\.?[\]>]?\s+twice")
+_ESC_TWICE_RE = re.compile(rb"(?i)press\s+[\[<(]?\.?esc\.?[\]>)]?\s+twice")
 
 # Match single "Press [ESC]" prompts without "twice" (e.g. Herbie's BBS).
-_ESC_ONCE_RE = re.compile(rb"(?i)press\s+[\[<]?\.?esc\.?[\]>]?(?!\s+twice)")
+_ESC_ONCE_RE = re.compile(rb"(?i)press\s+[\[<(]?\.?esc\.?[\]>)]?(?!\s+twice)")
 
 # Match "HIT RETURN", "PRESS RETURN", "PRESS ENTER", "HIT ENTER", etc.
 # Common on Worldgroup/MajorBBS and other vintage BBS systems.

telnetlib3/tests/test_server_fingerprinting.py

@@ -798,6 +798,9 @@ async def test_probe_skipped_when_closing(tmp_path):
         pytest.param(
             b"Press <Esc> twice for the BBS ... ", b"\x1b\x1b", None, id="esc_twice_angle_brackets"
         ),
+        pytest.param(
+            b"Press (ESC) twice", b"\x1b\x1b", None, id="esc_twice_parens"
+        ),
         pytest.param(
             b"\x1b[33mPress [.ESC.] twice within 10 seconds\x1b[0m",
             b"\x1b\x1b",
@@ -813,6 +816,7 @@ async def test_probe_skipped_when_closing(tmp_path):
         pytest.param(b"Please press [ESC] to continue", b"\x1b", None, id="esc_once_brackets"),
         pytest.param(b"Press ESC to continue", b"\x1b", None, id="esc_once_bare"),
         pytest.param(b"press <Esc> to continue", b"\x1b", None, id="esc_once_angle_brackets"),
+        pytest.param(b"Press (ESC) to continue", b"\x1b", None, id="esc_once_parens"),
         pytest.param(
             b"\x1b[33mPress [ESC] to continue\x1b[0m", b"\x1b", None, id="esc_once_ansi_wrapped"
         ),