IE8’s handling of exisiting filters/hacks that target previous versions of IE

Standards mode is XHTML 1.0 strict, Quirks mode has no doctype, and Quirks mode 2 is HTML 4.0 Transitional without a URL.

Filter/Hack	Applied by	Not applied by	X-UA-Compatible IE=5 Standards	X-UA-Compatible IE=5 Quirks	X-UA-Compatible IE=5 Quirks2	X-UA-Compatible IE=7 Standards	X-UA-Compatible IE=7 Quirks	X-UA-Compatible IE=7 Quirks2	X-UA-Compatible IE=EmulateIE7 Standards	X-UA-Compatible IE=EmulateIE7 Quirks	X-UA-Compatible IE=EmulateIE7 Quirks2	X-UA-Compatible IE=8 Standards	X-UA-Compatible IE=8 Quirks	X-UA-Compatible IE=8 Quirks2
Star `html` Selector	IE5, IE5.5, IE6, IE7 (quirks)	IE7 (standards)	Applied [view test]	Applied [view test]	Applied [view test]	Not applied [view test]	Not applied [view test]	Not applied [view test]	Not applied [view test]	Not applied [view test]	Not applied [view test]	Not applied [view test]	Not applied [view test]	Not applied [view test]
Star plus `html` Selector	IE7 (standards)	IE5, IE5.5, IE6, IE7 (quirks)	Not applied [view test]	Not applied [view test]	Not applied [view test]	Applied [view test]	Not applied [view test]	Applied [view test] anomalous	Applied [view test]	Not applied [view test]	Not applied [view test]	Not applied [view test]	Not applied [view test]	Not applied [view test]
Fake Class Real Class	IE5, IE5.5, IE6, IE7 (quirks)	IE7 (standards)	Applied [view test]	Applied [view test]	Applied [view test]	Not applied [view test]	Not applied [view test]	Not applied [view test]	Not applied [view test]	Not applied [view test]	Not applied [view test]	Not applied [view test]	Not applied [view test]	Not applied [view test]
Fake Id Real Id	IE5, IE5.5, IE6, IE7 (quirks)	IE7 (standards)	Applied [view test]	Applied [view test]	Applied [view test]	Not applied [view test]	Not applied [view test]	Not applied [view test]	Not applied [view test]	Not applied [view test]	Not applied [view test]	Not applied [view test]	Not applied [view test]	Not applied [view test]
Real Id Fake Class	IE6	IE5, IE5.5, IE7	Not applied [view test]	Not applied [view test]	Not applied [view test]	Not applied [view test]	Not applied [view test]	Not applied [view test]	Not applied [view test]	Not applied [view test]	Not applied [view test]	Not applied [view test]	Not applied [view test]	Not applied [view test]
Double Id Class	IE6	IE5, IE5.5, IE7	Not applied [view test]	Not applied [view test]	Not applied [view test]	Not applied [view test]	Not applied [view test]	Not applied [view test]	Not applied [view test]	Not applied [view test]	Not applied [view test]	Not applied [view test]	Not applied [view test]	Not applied [view test]
IE 5.0/Windows Band Pass Filter	IE5	IE5.5, IE6, IE7	Not applied [view test]	Not applied [view test]	Not applied [view test]	Not applied [view test]	Not applied [view test]	Not applied [view test]	Not applied [view test]	Not applied [view test]	Not applied [view test]	Not applied [view test]	Not applied [view test]	Not applied [view test]
Empty Comment + Value	IE5, IE6, IE7	IE5.5	Applied [view test]	Applied [view test]	Applied [view test]	Applied [view test]	Applied [view test]	Applied [view test]	Applied [view test]	Applied [view test]	Applied [view test]	Applied [view test]	Applied [view test]	Applied [view test]
Escape Hack	IE6, IE7	IE5, IE5.5	Applied [view test]	Applied [view test]	Applied [view test]	Applied [view test]	Applied [view test]	Applied [view test]	Applied [view test]	Applied [view test]	Applied [view test]	Applied [view test]	Applied [view test]	Applied [view test]
Tantek Box Model Hack	IE6, IE7	IE5, IE5.5	Applied [view test]	Applied [view test]	Applied [view test]	Applied [view test]	Applied [view test]	Applied [view test]	Applied [view test]	Applied [view test]	Applied [view test]	Applied [view test]	Applied [view test]	Applied [view test]
Property + Empty Comment	IE5.5, IE6, IE7	IE5	Applied [view test]	Applied [view test]	Applied [view test]	Applied [view test]	Applied [view test]	Applied [view test]	Applied [view test]	Applied [view test]	Applied [view test]	Applied [view test]	Applied [view test]	Applied [view test]
Simplified Box Model Hack	IE6, IE7	IE5, IE5.5	Applied [view test]	Applied [view test]	Applied [view test]	Applied [view test]	Applied [view test]	Applied [view test]	Applied [view test]	Applied [view test]	Applied [view test]	Applied [view test]	Applied [view test]	Applied [view test]
`@import` Single Quotes w/o Whitespace	IE5.5, IE6, IE7	IE5	Applied [view test]	Applied [view test]	Applied [view test]	Applied [view test]	Applied [view test]	Applied [view test]	Applied [view test]	Applied [view test]	Applied [view test]	Applied [view test]	Applied [view test]	Applied [view test]
Selector + Empty Comment	IE5.5, IE6, IE7	IE5	Applied [view test]	Applied [view test]	Applied [view test]	Applied [view test]	Applied [view test]	Applied [view test]	Applied [view test]	Applied [view test]	Applied [view test]	Applied [view test]	Applied [view test]	Applied [view test]
Inline High Pass Filter	IE6, IE7	IE5, IE5.5	Applied [view test]	Applied [view test]	Applied [view test]	Applied [view test]	Applied [view test]	Applied [view test]	Applied [view test]	Applied [view test]	Applied [view test]	Applied [view test]	Applied [view test]	Applied [view test]
Property + Whitespace + Empty Comment	IE5, IE5.5, IE6 (quirks), IE7	IE6 (standards)	Applied [view test]	Applied [view test]	Applied [view test]	Applied [view test]	Applied [view test]	Applied [view test]	Applied [view test]	Applied [view test]	Applied [view test]	Applied [view test]	Applied [view test]	Applied [view test]
Property + Whitespace Comment	IE5.5, IE6, IE7	IE5	Applied [view test]	Applied [view test]	Applied [view test]	Applied [view test]	Applied [view test]	Applied [view test]	Applied [view test]	Applied [view test]	Applied [view test]	Applied [view test]	Applied [view test]	Applied [view test]
IE 5.5/Windows Band Pass Filter	IE5.5	IE5, IE6, IE7	Not applied [view test]	Not applied [view test]	Not applied [view test]	Not applied [view test]	Not applied [view test]	Not applied [view test]	Not applied [view test]	Not applied [view test]	Not applied [view test]	Not applied [view test]	Not applied [view test]	Not applied [view test]
Selector + Whitespace Comment	IE5.5, IE6, IE7	IE5	Applied [view test]	Applied [view test]	Applied [view test]	Applied [view test]	Applied [view test]	Applied [view test]	Applied [view test]	Applied [view test]	Applied [view test]	Applied [view test]	Applied [view test]	Applied [view test]