Two Windows bugs in scripts/run_tests_parallel.py:
- --files/--paths/HERMES_TEST_PATHS were split on ':', which shreds
absolute Windows paths at the drive letter ('C:\repo\tests' ->
['C', '\repo\tests']): the drive letter became a phantom discovery
root and the rooted remainder only resolved by WindowsPath
re-anchoring it onto repo_root's drive. New _split_pathspec() keeps
drive-letter colons glued to their path and accepts ';' (os.pathsep)
on Windows, while ':'-joined lists (CI generate job) keep working.
- With piped stdout (CI, subprocess capture) Windows encodes the
runner's output as the ANSI code page, so printing the per-file
progress glyphs raised UnicodeEncodeError inside the executor
done-callback and every progress line was silently lost -- which is
also why test_bare_value_flag_keeps_its_value failed on win32 (no
'1[check]' line, and the summary says '1 tests passed', which does not
contain '1 passed'). The runner now reconfigures its own
stdout/stderr to UTF-8 on Windows, and the tests decode the captured
output as UTF-8.
Adds regression tests: os.pathsep-joined absolute roots (all
platforms) and no-phantom-drive-root (win32).
Fixes#57149
298ef06458