Idempotency problem when exceptions in signature file

[nojaf]

Issue created from fantomas-online

Formatted code

// Copyright (c) Microsoft Corporation.  All Rights Reserved.  See License.txt in the project root for license information.

/// The configuration of the compiler (TcConfig and TcConfigBuilder)
module internal FSharp.Compiler.CompilerConfig

open System
open Internal.Utilities
open Internal.Utilities.Library
open FSharp.Compiler
open FSharp.Compiler.AbstractIL
open FSharp.Compiler.AbstractIL.IL
open FSharp.Compiler.AbstractIL.ILBinaryReader
open FSharp.Compiler.AbstractIL.ILPdbWriter
open FSharp.Compiler.DependencyManager
open FSharp.Compiler.Diagnostics
open FSharp.Compiler.ErrorLogger
open FSharp.Compiler.Features
open FSharp.Compiler.CodeAnalysis
open FSharp.Compiler.Text
exception FileNameNotResolved of string (*description of searched locations*)  * string * range (*filename*)
exception LoadedSourceNotFoundIgnoring of string * range (*filename*)

Reformatted code

// Copyright (c) Microsoft Corporation.  All Rights Reserved.  See License.txt in the project root for license information.

/// The configuration of the compiler (TcConfig and TcConfigBuilder)
module internal FSharp.Compiler.CompilerConfig

open System
open Internal.Utilities
open Internal.Utilities.Library
open FSharp.Compiler
open FSharp.Compiler.AbstractIL
open FSharp.Compiler.AbstractIL.IL
open FSharp.Compiler.AbstractIL.ILBinaryReader
open FSharp.Compiler.AbstractIL.ILPdbWriter
open FSharp.Compiler.DependencyManager
open FSharp.Compiler.Diagnostics
open FSharp.Compiler.ErrorLogger
open FSharp.Compiler.Features
open FSharp.Compiler.CodeAnalysis
open FSharp.Compiler.Text
exception FileNameNotResolved of string (*description of searched locations*)  * string * range (*filename*)

exception LoadedSourceNotFoundIgnoring of string * range (*filename*)

Problem description

Newline before exception is not reinserted, only in signature file.
Result in implementation file:

// Copyright (c) Microsoft Corporation.  All Rights Reserved.  See License.txt in the project root for license information.

/// The configuration of the compiler (TcConfig and TcConfigBuilder)
module internal FSharp.Compiler.CompilerConfig

open System
open Internal.Utilities
open Internal.Utilities.Library
open FSharp.Compiler
open FSharp.Compiler.AbstractIL
open FSharp.Compiler.AbstractIL.IL
open FSharp.Compiler.AbstractIL.ILBinaryReader
open FSharp.Compiler.AbstractIL.ILPdbWriter
open FSharp.Compiler.DependencyManager
open FSharp.Compiler.Diagnostics
open FSharp.Compiler.ErrorLogger
open FSharp.Compiler.Features
open FSharp.Compiler.CodeAnalysis
open FSharp.Compiler.Text

exception FileNameNotResolved of string (*description of searched locations*)  * string * range (*filename*)

exception LoadedSourceNotFoundIgnoring of string * range (*filename*)

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 03/20/2021 08:42:06 - 09a26b1

Default Fantomas configuration

Signature file

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