Add `sphinx.util._strip_escape_sequences`

sphinx/util/_io.py

@@ -1,6 +1,6 @@
 from typing import TYPE_CHECKING
 
-from sphinx.util.console import strip_colors
+from sphinx.util.console import _strip_escape_sequences
 
 if TYPE_CHECKING:
     from typing import Protocol
@@ -22,7 +22,7 @@ class TeeStripANSI:
 
     def write(self, text: str, /) -> None:
         self.stream_term.write(text)
-        self.stream_file.write(strip_colors(text))
+        self.stream_file.write(_strip_escape_sequences(text))
 
     def flush(self) -> None:
         if hasattr(self.stream_term, 'flush'):

sphinx/util/console.py

@@ -14,7 +14,15 @@ except ImportError:
     colorama = None
 
 
-_ansi_re: re.Pattern[str] = re.compile('\x1b\\[(\\d\\d;){0,2}\\d\\dm')
+_CSI = re.escape('\x1b[')  # 'ESC [': Control Sequence Introducer
+_ansi_re: re.Pattern[str] = re.compile(
+    _CSI + r"""
+    (
+      (\d\d;){0,2}\d\dm  # ANSI colour code
+    |
+      \dK                # ANSI Erase in Line
+    )""",
+    re.VERBOSE | re.ASCII)
 codes: dict[str, str] = {}
 
 
@@ -90,6 +98,10 @@ def strip_colors(s: str) -> str:
     return re.compile('\x1b.*?m').sub('', s)
 
 
+def _strip_escape_sequences(s: str) -> str:
+    return _ansi_re.sub('', s)
+
+
 def create_color_func(name: str) -> None:
     def inner(text: str) -> str:
         return colorize(name, text)

sphinx/util/exceptions.py

@@ -6,7 +6,7 @@ from tempfile import NamedTemporaryFile
 from typing import TYPE_CHECKING
 
 from sphinx.errors import SphinxParallelError
-from sphinx.util.console import strip_colors
+from sphinx.util.console import _strip_escape_sequences
 
 if TYPE_CHECKING:
     from sphinx.application import Sphinx
@@ -31,7 +31,8 @@ def save_traceback(app: Sphinx | None, exc: BaseException) -> str:
         last_msgs = exts_list = ''
     else:
         extensions = app.extensions.values()
-        last_msgs = '\n'.join(f'#   {strip_colors(s).strip()}' for s in app.messagelog)
+        last_msgs = '\n'.join(f'#   {_strip_escape_sequences(s).strip()}'
+                              for s in app.messagelog)
         exts_list = '\n'.join(f'#   {ext.name} ({ext.version})' for ext in extensions
                               if ext.version != 'builtin')
 

tests/test_build_linkcheck.py

@@ -26,7 +26,6 @@ from sphinx.builders.linkcheck import (
 )
 from sphinx.testing.util import strip_escseq
 from sphinx.util import requests
-from sphinx.util.console import strip_colors
 
 from .utils import CERT_FILE, http_server, https_server
 
@@ -764,7 +763,7 @@ def test_too_many_requests_retry_after_int_delay(app, capsys, status):
         "info": "",
     }
     rate_limit_log = "-rate limited-   http://localhost:7777/ | sleeping...\n"
-    assert rate_limit_log in strip_colors(status.getvalue())
+    assert rate_limit_log in strip_escseq(status.getvalue())
     _stdout, stderr = capsys.readouterr()
     assert stderr == textwrap.dedent(
         """\