function Test-FileTab {
    <#
    .SYNOPSIS
        Returns false if tab char is used in file.

    .DESCRIPTION
        Test the given file if tabs are used. Returns false if any tabs were found.

    .PARAMETER Path
        elative or full path to an existing file.

    .INPUTS
        [none]

    .OUTPUTS
        [bool]

    .EXAMPLE
        Test-FileTab -Path './testfile.txt'

    .NOTES
    #>

    [CmdletBinding()]
    [OutputType([bool])]

    param (
        [Parameter(Mandatory = $true)]
        [ValidateScript(
            {
                Test-Path -Path $_
            }
        )]
        [string]$Path
    )

    begin {
    }

    process {
        $content = Get-Content -Path $Path -Raw -Encoding 'utf8'
        $Tabs = ([regex]::Matches($content, "`t")).Count

        if ($Tabs -ne 0 ) {
            Write-Debug -Message ('Tabs: {0} -> false' -f $Tabs)
            Write-Output $false
        }
        else {
            Write-Debug -Message ('Tabs: {0} -> true' -f $Tabs)
            Write-Output $true
        }
    }

    end {
    }
}