Idempotency problem when format computation expression with generic parameter

[albertwoo]

Issue created from fantomas-online

Formatted code

odata<Person> { count
take 10
skip 10
}

Reformatted code

odata<Person> { count take 10 skip 10 }

Problem description

Fantomas was not able to produce the same code after reformatting the result.

Extra information

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

Options

Fantomas master branch at 2022-05-28T16:36:31Z - 929b3f0

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?}

[nojaf]

Hello, thank you for opening this issue.
I believe the problem here is that the generic parameter isn't captured in

fantomas/src/Fantomas.Core/SourceParser.fs

Lines 580 to 588 in e5a8830

	let (|NamedComputationExpr|_|) =
	function
	| SynExpr.App (ExprAtomicFlag.NonAtomic,
	false,
	(SynExpr.App _ as nameExpr
	| SimpleExpr nameExpr),
	ComputationExpr (openingBrace, compExpr, closingBrace),
	_) -> Some(nameExpr, openingBrace, compExpr, closingBrace)
	| _ -> None

This active pattern should be extended to deal with nameExpr being SynExpr.TypeApp.
Are you interested in submitting a PR for this?

[albertwoo]

Sorry, I do not have the knowledge to do this.