Unicode null escapes are unescaped (v3.0.0. beta1, beta2)

[SteveGilham]

Description

The escape \u0000 is replaced by a literal NUL, making git detect the formatted file as binary.

Repro code

This happens with 3.0.0 beta1 and carries through to beta 2, but using the tool with the next-gen preview version causes that tool to fault instead.

The problem doesn't show with 2.9.2 or the 2.9.3-preview options

Input

    let makeFilter filterclass (x: String) =
      x.Replace('\u0000', '\\')
      |> CommandLine.ValidateRegexes
      |> Seq.iter (filterclass >> Visitor.NameFilters.Add)

to the 3.0.0 beta 2 tool replaces the character \u0000 with a NUL byte. A NUL byte is also added to the end of the file.

[jindraivanek]

Tool fault was caused by unrelated issue on tool side (incompatible version of FSharp.Compiler.Service and FSharp.Core), it is fixed now.