Fantomas 2.8.1 introduces a regression where formatting with just an AST *no longer works*

[7sharp9]

This is because of a change where it is assumed that source is always Some even if an empty string is used:

https://github.com/fsprojects/fantomas/blob/master/src/Fantomas/CodeFormatterImpl.fs#L353

This has the effect of making the following error always occur:

https://github.com/fsprojects/fantomas/blob/master/src/Fantomas/CodeFormatterImpl.fs#L366-L368

As you can see before this change it was possible to supply None for the source code, now this simply fails with:

Incomplete code fragment which is most likely due to parsing errors or the use of F# constructs newer than supported.

whenever just an AST is supplied.

[jindraivanek]

Fixed by #322.

[nojaf]

Hi @7sharp9 , sorry for this regression. I was planning on release the next version by the end of the month.
Would that be ok, or you prefer an earlier release?

Are you using this in a open source project by any chance? Might be interesting to include in #254.

[7sharp9]

@nojaf Yeah I use Fantomas in Falanx. Theres a dependency on Fantomas 2.8.1 in FsAst which I need to update to the patched version at some point.

[nojaf]

Ok, I'll release a new version this weekend to help out falanx

[7sharp9]

Any news on a new release?

[nojaf]

Hi, sorry didn't get there yet.
As a workaround you can use the artifacts of AppVeyor, that should also work.

I'll try this evening, don't have the nuget key right now. #327

[nojaf]

@7sharp9 2.9.0 is out.