Powershell: Default Export-FormatData to pretty-printing or add an option

[mklement0]

^{Related: #6680}

One use case for Export-FormatData - even though about_Format.ps1xml doesn't currently mention it - is to use existing formatting definitions as a starting point for creating new ones.

To that end, outputting _pretty-printed_ XML would be much more convenient - currently, a single-line XML string is output.

• If changing the existing behavior is not a backward-compatibility concern:

  • Simply output pretty-printed XML by default (it will consume more space, however)

• Otherwise:

  • Introduce a switch such as -Format (or, to follow the - inverted - logic of ConvertTo-Json, perhaps -Uncompress?) that results in pretty-printed output.

Environment data

Written as of:

PowerShell Core v6.0.2

[BrucePay]

@mklement0 This sounds like a good thing to do. (I would have thought we were already doing it actually.) Anyway, as long as the result is valid XML, simply pretty-printing it should fall within acceptable changes.

[SteveL-MSFT]

Pretty printed xml is well-formed and valid, so there's no functional impact. Seems like a good idea and should be a small change.