[SwiftDiagnostics] Make `GroupedDiagnostics` Emit Notes#3279

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filip-sakel wants to merge 10 commits into

swiftlang:mainfrom

filip-sakel:notes-diagnostic-group

Commits on Mar 12, 2026

Generalize group notes diagnostic to group same-line diagnostics and add more test cases.
filip-sakel
committed
Remove debug print from test.
filip-sakel
committed

Commits on May 26, 2026

Merge branch 'swiftlang:main' into notes-diagnostic-group
filip-sakel
authored
Update to support category chain from recent merge, and stop attached notes from inheriting the main diagnostic's category.
filip-sakel
committed
Change default GroupedDiagnostics behavior to include notes in annotated source by default and update relevant tests.
filip-sakel
committed