PyREPL: Update Regex in all places

[Eduardo Villalpando Mello (edvilme)]

Before

Description: Text does not render at carat position, but at the middle of the screen

After

Description: Text renders correctly

Currently, pythonrc overrides the ANSI escape sequence for handling OSC codes. However, this does not get automatically updated in all references that import it.

Compatibility and escape sequence handling:

• The initialization logic in pythonrc.py now ensures that the patched ANSI_ESCAPE_SEQUENCE regex is set before importing _pyrepl.simple_interact, making sure all _pyrepl modules use the updated regex. This prevents issues with prompt rendering and escape sequence stripping in Python 3.13+.
• A new test, test_replacement_regex_is_imported_by_pyrepl_modules, verifies that the patched regex is correctly imported and used by both _pyrepl.reader and _pyrepl.render modules for Python 3.15 and above.

[Heejae Chang (heejaechang)]

🔒 Automated review in progress — Heejae Chang (@heejaechang) is auto-reviewing this PR.

[Heejae Chang (heejaechang)]

Result: ⚠️ partially-verified

Verification details

Verification: Isolated verification observed failures that were not classified as caused by this PR: Probe patched reader and render bindings, Probe patched Python 3.13 reader binding.

Summary: The targeted shell-integration suite passed all 12 tests on Python 3.13.16, including the existing regex and prompt tests. The new Python 3.15-specific test returned before executing its assertions. Two direct probes confirmed that Python 3.13 lacks the `_pyrepl.render` module and reader binding required to verify the new behavior. Verification is therefore partial.

Test runs: 2 passed, 2 failed

• ❌ Failed | unrelated to this PR | Probe patched reader and render bindings | python - <<'PY'
import importlib
import pythonrc
from _pyrepl import utils

checked = []
for module_name in ("_pyrepl.reader", "_pyrepl.render"):
module = importlib.import_module(module_name)
regex = getattr(module, "ANSI_ESCAPE_SEQUENCE", None)
if regex is not None:
assert regex is utils.ANSI_ESCAPE_SEQUENCE
assert regex.sub("", "\x1b]633;A\x07>>> ") == ">>> "
checked.append(module_name)
assert checked
print(f"Python bindings verified: {', '.join(checked)}")
print(f"_pyrepl.render.RenderLine available: {hasattr(importlib.import_module('_pyrepl.render'), 'RenderLine')}")
PY

• ❌ Failed | unrelated to this PR | Probe patched Python 3.13 reader binding | python - <<'PY'
import pythonrc
from _pyrepl import reader, utils

assert reader.ANSI_ESCAPE_SEQUENCE is utils.ANSI_ESCAPE_SEQUENCE
assert reader.ANSI_ESCAPE_SEQUENCE.sub("", "\x1b]633;A\x07>>> ") == ">>> "
print("Python 3.13 reader binding uses the patched regex and strips OSC prompts")
PY

• ✅ Passed | Python shell integration tests | python python_files/tests/run_all.py python_files/tests/test_shell_integration.py -v
• ✅ Passed | Dependency and test discovery | printf 'sandbox_profile=%s\n' "${AUTOMATION_SANDBOX_PROFILE:-}"; printf 'python='; python --version; printf 'pytest='; python -m pytest --version; printf 'available_pythons:\n'; command -v python3.15 || true; command -v python3.14 || true; command -v python3.13 || true; printf 'changed_files:\n'; git diff --name-status HEAD^ HEAD; printf 'test_runner:\n'; sed -n '1,220p' python_files/tests/run_all.py; printf 'python_manifest:\n'; cat python_files/pyproject.toml

❌ Probe patched reader and render bindings diagnostic output

ModuleNotFoundError: No module named '_pyrepl.render'

❌ Probe patched Python 3.13 reader binding diagnostic output

AttributeError: module '_pyrepl.reader' has no attribute 'ANSI_ESCAPE_SEQUENCE'

[Heejae Chang (heejaechang)]

Approved via Review Center.