feat: re-support net46 and netstandard2.0 targets#429
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Add net46 and netstandard2.0 back to the target frameworks, guarding net6+/net7+ APIs (GeneratedRegex, Regex.EnumerateMatches, span line splitting, range/index operators) behind conditional compilation and BCL polyfills (ReplaceLineEndings, DistinctBy, GetValueOrDefault, char-based Contains/StartsWith/EndsWith). Test project drops Verify in favour of plain assertions and checked-in snapshots so the suite runs on net48/net6.0, with downlevel-compatible test tooling. CI builds every TFM on Linux and runs net48 on Windows.
The PR for the downlevel re-support targets 5.x, but the workflow only triggered on push/pull_request to master, so no checks ran. Add 5.x to both trigger filters.
This was referenced Jul 6, 2026
This was referenced Jul 14, 2026
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Add net46 and netstandard2.0 back to the target frameworks, guarding net6+/net7+ APIs (GeneratedRegex, Regex.EnumerateMatches, span line splitting, range/index operators) behind conditional compilation and BCL polyfills (ReplaceLineEndings, DistinctBy, GetValueOrDefault, char-based Contains/StartsWith/EndsWith).
Test project drops Verify in favour of plain assertions and checked-in snapshots so the suite runs on net48/net6.0, with downlevel-compatible test tooling. CI builds every TFM on Linux and runs net48 on Windows.