Is this a bug on ad_set_form_values?

ad_set_form_values foo

if foo start with a "-" like "- bar". "- bar" is taken as a switch?

Invalid switch: "- bar"
    while executing
"ad_set_element_value__arg_parser"
    (procedure "ad_set_element_value" line 1)
    invoked from within
"ad_set_element_value -element $arg $value"
    (procedure "ad_set_form_values" line 5)

But the fix is similar ... ad_set_form_values calls ad_set_element_value and should have a "--" separating the arg that names the element and the value.  I'll fix this and commit to the 4.6 branch today.