Pike
public text v1 · immutable<?xml version='1.0'?>
<!DOCTYPE test [
<!ELEMENT test (#PCDATA) >
<!ENTITY one "error &two; prone">
<!ENTITY three "error-prone">
<!ENTITY two "<a>&three;</a>">
]>
<test>This sample shows a &one; method.</test><?xml version='1.0'?>
<!DOCTYPE test [
<!ELEMENT test (#PCDATA) >
<!ENTITY one "error &two; prone">
<!ENTITY three "error-prone">
<!ENTITY two "<a>&three;</a>">
]>
<test>This sample shows a &one; method.</test>