Ivan Shen

Introduce a -matchall operator that finds *all* regex matches, to complement -match

2

# PR Summary As per https://github.com/PowerShell/PowerShell/issues/7867: - A -matchall, -imatchall, and -cmatchall operators are introduced, as a PowerShell-friendly wrapper for the `[regex]::Matches()` method. ``` # Scalar LHS; returns a collection...