Lines unaffected from sytax errors get formatted wrong on PowerShell 5

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• Make sure you are able to repro it on the latest released version
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Steps to reproduce

1. Open a PowerShell 5 window
2. Type the following code with intentional syntax errors:

$code = @"
@(
  @{
    ""
  }
  ""
)
test /parameter
"@

Invoke-Formatter $code

Expected behavior

Slash should not be seperated from parameter since it isn't affected from the syntax error.

@(
    @{
        ""
    }
    ""
)
test /parameter

Actual behavior

Slash is treated as an operator and is seperated from parameter. This behavior is unique to PowerShell 5 and does not occur in v7.

@(
    @{
        ""
    }
    ""
)
test / parameter

If an unexpected error was thrown then please report the full error details using e.g. $error[0] | Select-Object *

Environment data

> $PSVersionTable

Name                           Value
----                           -----
PSVersion                      5.1.19041.1320
PSEdition                      Desktop
PSCompatibleVersions           {1.0, 2.0, 3.0, 4.0...}
BuildVersion                   10.0.19041.1320
CLRVersion                     4.0.30319.42000
WSManStackVersion              3.0
PSRemotingProtocolVersion      2.3
SerializationVersion           1.1.0.1

> (Get-Module -ListAvailable PSScriptAnalyzer).Version | ForEach-Object { $_.ToString() }

1.20.0

まず、Invoke-Formatter と提供された構文エラーのスニペットを使って PowerShell 5 のケースを再現し、その後、parse エラーの後に影響を受けていない行を処理する formatter の経路を追跡します。PowerShell 5 でスラッシュがパラメーターに付いたままになり、期待される出力と一致し、既存の PowerShell 7 の動作を変更しなければ完了です。