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Showing content from https://github.com/Ionide/fsautocomplete/issues/1210 below:

fsiExtraParameters break error hints in editor while editing .fsx files · Issue #1210 · ionide/FsAutoComplete · GitHub

ionide.vscode v7.16.1, fsac 0.68.0

.NET SDK:
Version: 7.0.400
Commit: 73bf45718d

Runtime Environment:
OS Name: Mac OS X
OS Version: 12.3
OS Platform: Darwin
RID: osx.12-arm64
Base Path: /Users/horacegonzalez/.dotnet/sdk/7.0.400/

Host:
Version: 8.0.0
Architecture: arm64
Commit: 5535e31a71

.NET SDKs installed:
6.0.108 [/Users/horacegonzalez/.dotnet/sdk]
6.0.300 [/Users/horacegonzalez/.dotnet/sdk]
6.0.303 [/Users/horacegonzalez/.dotnet/sdk]
6.0.400 [/Users/horacegonzalez/.dotnet/sdk]
6.0.408 [/Users/horacegonzalez/.dotnet/sdk]
7.0.201 [/Users/horacegonzalez/.dotnet/sdk]
7.0.400 [/Users/horacegonzalez/.dotnet/sdk]
8.0.100-preview.3.23178.7 [/Users/horacegonzalez/.dotnet/sdk]
8.0.100-rc.2.23502.2 [/Users/horacegonzalez/.dotnet/sdk]
8.0.100 [/Users/horacegonzalez/.dotnet/sdk]

.NET runtimes installed:
Microsoft.AspNetCore.App 6.0.5 [/Users/horacegonzalez/.dotnet/shared/Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 6.0.8 [/Users/horacegonzalez/.dotnet/shared/Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 6.0.16 [/Users/horacegonzalez/.dotnet/shared/Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 7.0.3 [/Users/horacegonzalez/.dotnet/shared/Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 7.0.10 [/Users/horacegonzalez/.dotnet/shared/Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 8.0.0-preview.3.23177.8 [/Users/horacegonzalez/.dotnet/shared/Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 8.0.0-rc.2.23480.2 [/Users/horacegonzalez/.dotnet/shared/Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 8.0.0 [/Users/horacegonzalez/.dotnet/shared/Microsoft.AspNetCore.App]
Microsoft.NETCore.App 6.0.5 [/Users/horacegonzalez/.dotnet/shared/Microsoft.NETCore.App]
Microsoft.NETCore.App 6.0.8 [/Users/horacegonzalez/.dotnet/shared/Microsoft.NETCore.App]
Microsoft.NETCore.App 6.0.16 [/Users/horacegonzalez/.dotnet/shared/Microsoft.NETCore.App]
Microsoft.NETCore.App 7.0.3 [/Users/horacegonzalez/.dotnet/shared/Microsoft.NETCore.App]
Microsoft.NETCore.App 7.0.10 [/Users/horacegonzalez/.dotnet/shared/Microsoft.NETCore.App]
Microsoft.NETCore.App 8.0.0-preview.3.23174.8 [/Users/horacegonzalez/.dotnet/shared/Microsoft.NETCore.App]
Microsoft.NETCore.App 8.0.0-rc.2.23479.6 [/Users/horacegonzalez/.dotnet/shared/Microsoft.NETCore.App]
Microsoft.NETCore.App 8.0.0 [/Users/horacegonzalez/.dotnet/shared/Microsoft.NETCore.App]

Other architectures found:
x64 [/usr/local/share/dotnet/x64]
registered at [/etc/dotnet/install_location_x64]

Environment variables:
DOTNET_ROOT [/Users/horacegonzalez/.dotnet]

global.json file:
/Users/horacegonzalez/code/FsAutoComplete/global.json

Learn more:
https://aka.ms/dotnet/info

Download .NET:
https://aka.ms/dotnet/download

1. create a new workspace folder called temp (anywhere is fine)
2. Create a new temp/test.fsx file with the following text:

printfn "%d" "The number 1" 

1. create a new temp/.vscode/settings.json file with the following text:

{
    "FSharp.fsiExtraParameters": [
        "--readline-"
    ]
}

1. open the folder in vscode.
2. open test.fsx

Expected Behavior

Actual Behavior

Here's the notification from FSAC that's causing the issue:

[Trace - 6:13:28 PM] Received notification 'textDocument/publishDiagnostics'.
Params: {
    "uri": "file:///Users/horacegonzalez/code/temp/test.fsx",
    "diagnostics": [
        {
            "range": {
                "start": {
                    "line": -1,
                    "character": 0
                },
                "end": {
                    "line": -1,
                    "character": 0
                }
            },
            "severity": 1,
            "code": "243",
            "codeDescription": {
                "href": "https://docs.microsoft.com/en-us/dotnet/fsharp/language-reference/compiler-messages/fs0243"
            },
            "source": "F# Compiler",
            "message": "Unrecognized option: '--readline-'. Use '--help' to learn about recognized command line options.",
            "relatedInformation": []
        },
        {
            "range": {
                "start": {
                    "line": 1,
                    "character": 13
                },
                "end": {
                    "line": 1,
                    "character": 27
                }
            },
            "severity": 1,
            "code": "1",
            "codeDescription": {
                "href": "https://docs.microsoft.com/en-us/dotnet/fsharp/language-reference/compiler-messages/fs0001"
            },
            "source": "F# Compiler",
            "message": "The type 'string' is not compatible with any of the types byte,int16,int32,int64,sbyte,uint16,uint32,uint64,nativeint,unativeint, arising from the use of a printf-style format string",
            "relatedInformation": []
        }
    ]
}

Notice the range.start.line: -1 and range.end.line: -1. This causes the LSP client to throw an error because the range is invalid: https://github.com/microsoft/vscode-languageserver-node/blob/02806427ce7251ec8fa2ff068febd9a9e59dbd2f/client/src/common/protocolConverter.ts#L400

This results in the second The type 'string' is not compatible with any of the types ... error not being processed.

• I have looked through existing issues to make sure that this bug has not been reported before
• I have provided a descriptive title for this issue
• I have made sure that that this bug is reproducible on the latest version of the package
• I have provided all the information needed to reproduce this bug as efficiently as possible
• I or my company would be willing to contribute this fix

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