# Removes the numeric head of `self` if present
	#
	#     intrude import core::fixed_ints_text
	#     assert "0xFFEF".strip_numhead  == "FFEF"
	#     assert "0o7364".strip_numhead  == "7364"
	#     assert "0b01001".strip_numhead == "01001"
	#     assert "98".strip_numhead      == "98"
	private fun strip_numhead: Text do
		if get_numhead != "" then return substring_from(2)
		return self
	end