ssh kitten: Suppress error prints about invalid items in kitty.conf

Fixes #4985

kittens/ssh/main.py

@@ -39,7 +39,7 @@ from kitty.shm import SharedMemory
 from kitty.types import run_once
 from kitty.utils import (
     SSHConnectionData, expandvars, resolve_abs_or_config_path,
-    set_echo as turn_off_echo
+    set_echo as turn_off_echo, suppress_error_logging
 )
 
 from .completion import complete, ssh_options
@@ -152,6 +152,7 @@ def serialize_env(literal_env: Dict[str, str], env: Dict[str, str], base_env: Di
 @run_once
 def kitty_opts() -> Options:
     from kitty.cli import create_default_opts
+    with suppress_error_logging():
         return create_default_opts()
 
 

kitty/utils.py

@@ -13,8 +13,8 @@ from contextlib import contextmanager, suppress
 from functools import lru_cache
 from time import monotonic
 from typing import (
-    TYPE_CHECKING, Any, Callable, Dict, Generator, Iterable, List, Mapping,
+    TYPE_CHECKING, Any, Callable, Dict, Generator, Iterable, Iterator, List,
-    Match, NamedTuple, Optional, Pattern, Tuple, Union, cast
+    Mapping, Match, NamedTuple, Optional, Pattern, Tuple, Union, cast
 )
 
 from .constants import (
@@ -122,6 +122,19 @@ def log_error(*a: Any, **k: str) -> None:
         output(msg)
 
 
+@contextmanager
+def suppress_error_logging() -> Iterator[None]:
+    before = getattr(log_error, 'redirect', suppress_error_logging)
+    setattr(log_error, 'redirect', lambda *a: None)
+    try:
+        yield
+    finally:
+        if before is suppress_error_logging:
+            delattr(log_error, 'redirect')
+        else:
+            setattr(log_error, 'redirect', before)
+
+
 def ceil_int(x: float) -> int:
     return int(math.ceil(x))
 
@@ -536,7 +549,7 @@ def set_echo(fd: int = -1, on: bool = False) -> Tuple[int, List[Union[int, List[
 
 
 @contextmanager
-def no_echo(fd: int = -1) -> Generator[None, None, None]:
+def no_echo(fd: int = -1) -> Iterator[None]:
     import termios
     fd, old = set_echo(fd)
     try:
@@ -954,7 +967,7 @@ def path_from_osc7_url(url: str) -> str:
     if url.startswith('kitty-shell-cwd://'):
         return '/' + url.split('/', 3)[-1]
     if url.startswith('file://'):
-        from urllib.parse import urlparse, unquote
+        from urllib.parse import unquote, urlparse
         return unquote(urlparse(url).path)
     return ''