Code func, fnLn so that write-host "fnLn $(varA) = $varA" produces: 'Line No. 5: $(varA) = ABC'

Marceepoo 

While you can't produce the kind of output you're after inline, if you're happy calling out to a utility function to display the information, you can get a little closer.

In the example below, I've using the helper function, Write-VariableDetail, to output the information you originally asked for. As you can see though, you do have to provide parameters to the helper function as there's no way of implicitly knowing what the variable's name and value are otherwise.

Write-VariableDetail will work okay for simple variable types like string, int, Boolean, etc. but I haven't put any effort into "nicely" displaying complex types or arrays. PowerShell will default to a ToString() method if the object has one, and if not, it'll simply display the type name - which will look strange.

Example

function Write-VariableDetail()
{
    [cmdletbinding()]
    param(
        [parameter(Mandatory=$true)] [string] $Name
        , [parameter(Mandatory=$true)] [string] $Value
    );

    Write-Information -MessageData "Line $($MyInvocation.ScriptLineNumber): `$$Name = $Value" -InformationAction:Continue;
}

function Invoke-MyAmazingFunction()
{
    $Variable1 = "Whazzup!";
    $Variable2 = "Nutin.";

    Write-VariableDetail -Name "Variable1" -Value $Variable1;
    Write-VariableDetail -Name "Variable2" -Value $Variable2;
}

Output

If you don't want to use the helper function approach then that takes you back to my first reply.

Cheers,

Lain