ResxSourceGenerator creates invalid "Format method" name when resource name contains invalid characters

[Andrzej-W]

NuGet Package: Microsoft.CodeAnalysis.ResxSourceGenerator

Version: 3.11.0-beta1.24605.2

Describe the bug

Resource name can contain characters which are invalid in C# identifier. Generator does not change them to underscores in Format methods.

Steps To Reproduce

Create resource name with invalid characters, for example Name.with.dots. Enable Format methods in project file:

  <ItemGroup>
    <EmbeddedResource Update="**/*.resx">
      <EmitFormatMethods>true</EmitFormatMethods>
    </EmbeddedResource>
  </ItemGroup>

Expected behavior

Format method should have the name FormatName_with_dots

Actual behavior

Format method have the name FormatName.with.dots