Comment after equals in record type is lost

[nojaf]

Issue created from fantomas-online

Code

type V = // comment
    { X: SomeFieldType
      Y: OhSomethingElse
      Z: ALongTypeName }

Result

type V =
    { X: SomeFieldType
      Y: OhSomethingElse
      Z: ALongTypeName }

Problem description

Comment should still be there.

Extra information

• The formatted result breaks by code.
• The formatted result gives compiler warnings.
• I or my company would be willing to help fix this.

Options

Fantomas 4.6 branch at 1/1/1990

default config

_{Did you know that you can ignore files when formatting from fantomas-tool or the FAKE targets by using a .fantomasignore file?}

[nojaf]

Most likely happens as well with signature files.

[evenbrenden]

Looks like this generally happens with comments on the first line of multiline type declarations:

type Type = // COMMENT
    Type

↓

type Type = Type

[nojaf]

I'm actually trying to address this in the F# Compiler, by having a notion of the range of the equals token.
See nojaf@d21ec81