Invoke-Formatter loses one level of identation after chain with more than 2 commands and script blocks

Steps to reproduce

Input script, formatted already as expected.

Function a {
    Function b {
        Get-Content blah | ? {
            $_ -match foo    
        } | Set-Content bleh

        $AnotherStatement = 1
    }

    Write-Host "hi"
    b
    exit 1
}

a

Expected behavior

The example above after formatted looks the same.

Actual behavior

After a chain of more than 2 commands which spans several lines, the formatter loses one level of indentation. Using $(...) triggers the same problem.

Function a {
    Function b {
        Get-Content blah | ? {
            $_ -match foo
        } | Set-Content bleh

    $AnotherStatement = 1
}

Write-Host "hi"
b
exit 1
}

a

Environment data

> $PSVersionTable
Name                           Value
----                           -----
PSVersion                      5.1.15063.1805
PSEdition                      Desktop
PSCompatibleVersions           {1.0, 2.0, 3.0, 4.0...}
BuildVersion                   10.0.15063.1805
CLRVersion                     4.0.30319.42000
WSManStackVersion              3.0
PSRemotingProtocolVersion      2.3
SerializationVersion           1.1.0.1

> (Get-Module -ListAvailable PSScriptAnalyzer).Version | ForEach-Object { $_.ToString() }
1.18.3

首先，使用 Invoke-Formatter 和 issue 中的 PowerShell 指令碼重現回報的行為，包括多命令管線和 $(...) 變體。追蹤 formatter 進入點，並驗證格式化會保留接在這些鏈和指令碼區塊之後之陳述式的原始縮排。