Decompiler inaccurately converts template with 'format()' function

[anthony-c-martin]

{
    "$schema": "https://schema.management.azure.com/schemas/2019-04-01/deploymentTemplate.json#",
    "contentVersion": "1.0.0.0",
    "variables": {
        "foo": "abc",
        "bar": "[format('{0}', guid(subscription().id, 'xxxx', variables('foo')))]",
        "abc": "[format('{0}', guid('blah'))]"
    }
}

Gets converted to:

var foo = 'abc'
var bar = '${subscription().id}xxxx${foo}'
var abc = 'blah'

Note that the guid function is not present in the output.