sds / overcommit / 42091616621

92%

master: 91%

push

github

Avoid PowerShell startup for Windows parent command queries (#918)

Windows currently launches PowerShell whenever a hook inspects its
parent command. Use Ruby's COM support to query the same WMI
`CommandLine` field directly when `win32ole` is available, and retain
the existing PowerShell implementation when the library is missing or
COM access fails. This adds no dependency; Ruby versions without
`win32ole` keep the fallback.

Five paired GitHub Windows measurements on the production-sized shards
all improved: 10.3% median and 8.9% aggregate test-command reduction,
with positive results in both control/candidate execution orders. The
slowest sampled shard fell from 51.8s to 46.2s. [Benchmark
run](https://github.com/sds/overcommit/actions/runs/42089847074).

Validation: existing examples retained; added coverage for complete
Unicode command lines, exited/inaccessible processes, denied COM access,
and missing `win32ole`. Local utility specs and RuboCop pass. Full Ruby
3.3/3.4/4.0 × Ubuntu/Windows CI is required before merging.

Final verification: [full GitHub
CI](https://github.com/sds/overcommit/actions/runs/42091126588) passed
in 1m43s, with all 1,703 examples executed exactly once for each of the
six Ruby/OS combinations (10,218 executions). Aggregate coverage
increased to [92.425%](https://coveralls.io/builds/82854540), +0.02
percentage points. Optional partial-shard coverage comparisons changed
when the five new examples redistributed later examples; required
CI/lint and every matrix job passed.

11 of 11 new or added lines in 1 file covered. (100.0%)

3331 of 3604 relevant lines covered (92.43%)

3820.48 hits per line