Document `tt` and `HH`/`H` incompatibility in parsing format strings#51828

Merged

meaghanlewis merged 3 commits intomainfrom

copilot/fix-parseexact-hh-requirement

Feb 25, 2026

Commits on Feb 19, 2026

Initial plan
Copilot
committed
Document tt/HH incompatibility in DateTime.ParseExact format strings

Copilot
and
meaghanlewis
committed
Address review feedback: throws instead of causes, add ai-usage frontmatter

Copilot
and
meaghanlewis
committed