from panflute import Element, Block, Inline, Null, Str
import re

def replaceEl(e: Element, r: Element) -> Element:
	parent = e.parent
	parent.content[e.index] = r
	r.parent = parent
	return r
def deleteEl(e: Element):
	del e.parent.content[e.index]

def nullify(e: Element):
	if isinstance(e, Inline):
		return Str("")
	elif isinstance(e, Block):
		return Null()