Operator application to some literals doesn't preserve spacing

[baronfel]

Issue created from fantomas-online

Sharplab link to formatted results

Code

let (!!) (x: 'a): 'b = unbox x

let signed: string = !! -2

let signedLong: string = !! -2L

let signedFloat: string = !! -2.

let unsigned: string = !! 2

let string: string = !! "hi"

let boolean: string = !! true

Result

let (!!) (x: 'a) : 'b = unbox x

let signed: string = !!-2 // compilation error

let signedLong: string = !!-2L // compilation error

let signedFloat: string = !!-2. // compilation error

let unsigned: string = !!2

let string: string = !! "hi"

let boolean: string = !!true

Problem description

For at least signed int32/int64/float literals this formatting is not valid and results in compilation errors, because !!- is parsed as an operator.

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 11/19/2021 20:14:05 - 720227d

Default Fantomas configuration

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