Hojun-Cho 7470b1a5c3 ww driver: align cstage flag-parse to ww twin; 949 pins parity ...

Lone -I/-L/-l/-o now error "ww <cmd>: -X needs an argument" (rc2),
matching selfhost main.ww. do_test rewritten to an -I-only loop that
loud-rejects -l/-L/-o/unknown instead of silently swallowing them.
949_driver_flagargs: table-driven, 10 rows, each run against both
twins asserting identical rc+stderr. (#15-team)

2026-06-10 21:38:51 +09:00

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