type definition in signature file wrapped with hash directives

[nojaf]

Issue created from fantomas-online

Code

namespace X

type UnresolvedAssemblyReference = UnresolvedAssemblyReference of string * AssemblyReference list

#if !NO_EXTENSIONTYPING
type ResolvedExtensionReference = ResolvedExtensionReference of string * AssemblyReference list * Tainted<ITypeProvider> list
#endif

Error

System.Exception: Fantomas is trying to format the input multiple times due to the detect of multiple defines.
There is a problem with merging all the code back togheter. Please raise an issue at https://github.com/fsprojects/fantomas/issues.
   at Microsoft.FSharp.Core.PrintfModule.PrintFormatToStringThenFail@1639.Invoke(String message) in F:\workspace\_work\1\s\src\fsharp\FSharp.Core\printf.fs:line 1639
   at Fantomas.String.merge(String a, String b) in /home/runner/work/fantomas-tools/fantomas-tools/.deps/fantomas/src/Fantomas/Utils.fs:line 63
   at Fantomas.CodeFormatterImpl.merged@421.Invoke(String a, String b) in /home/runner/work/fantomas-tools/fantomas-tools/.deps/fantomas/src/Fantomas/CodeFormatterImpl.fs:line 421
   at Microsoft.FSharp.Collections.ListModule.Fold[T,TState](FSharpFunc`2 folder, TState state, FSharpList`1 list) in F:\workspace\_work\1\s\src\fsharp\FSharp.Core\list.fs:line 222
   at Microsoft.FSharp.Collections.ListModule.Reduce[T](FSharpFunc`2 reduction, FSharpList`1 list) in F:\workspace\_work\1\s\src\fsharp\FSharp.Core\list.fs:line 234
   at Fantomas.CodeFormatterImpl.format@412-1.Invoke(Tuple`2[] _arg1) in /home/runner/work/fantomas-tools/fantomas-tools/.deps/fantomas/src/Fantomas/CodeFormatterImpl.fs:line 421
   at Microsoft.FSharp.Control.AsyncPrimitives.CallThenInvokeNoHijackCheck[a,b](AsyncActivation`1 ctxt, FSharpFunc`2 userCode, b result1) in F:\workspace\_work\1\s\src\fsharp\FSharp.Core\async.fs:line 416
   at Microsoft.FSharp.Control.Trampoline.Execute(FSharpFunc`2 firstAction) in F:\workspace\_work\1\s\src\fsharp\FSharp.Core\async.fs:line 109

Problem description

Most likely a trivia problem regarding one of the hash directives.

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 Master at 09/05/2020 10:04:29 - 9fed8b8

Default Fantomas configuration

[nojaf]

Regression compared to v4.0

[nojaf]

The trivia bug here is not a regression, only occurs in signature files.