Ctrl K - D wipes out the text of the file in some situations about fantomas HOT 4 CLOSED

My observation shows that when parsing an invalid code, F# parser gives a partial AST (an AST which is printed out as empty string).

Should we detect these partial ASTs and keep the document unchanged?

from fantomas.

Yes, that's right, I believe there is an error node in the AST somewhere. I'd say you should display the nice dialog in that case, as is done with total parse failures.

from fantomas.

Yes, an error dialog should follow.

Do you mean these error cases in SynExpr type and the like https://github.com/fsharp/fsharp/blob/master/src/fsharp/ast.fs#L688 ?

from fantomas.

Yes, those are the ones

from fantomas.