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X-UA-Compatible vs. Conditional Comments

Sent by Alan Gresley on 16 March 2008 05:05


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Alex Robinson wrote:


> Gunlaug Sørtun wrote:
> [EMAIL-REMOVED]>
> Cc: [EMAIL-REMOVED]
>
> >> Can anyone please confirm that the real IE7 will show blue, blue,
> >> green, green and red on all test pages?
> >>
> >> <http://css-class.com/test/ie8hack-valid.htm>
> >
> >Confirming. Those colors are what the real IE7 shows.
>
>
> /aol Me too!

Thank you both Georg and Alex for confirming the real IE7 behavior.

Anyhow I have a lot of the real IE7 behavior imprinted to memory (in respect with my test cases and
some on Bruno's test cases). I have seen or documented enough real IE7 behavior to last a life time.
It's good that I caught and tested this browser early. :-)

This whole X-UA-Compatible business really had me hoodwinked. Now that I'm on the right track now I
can begin to test properly. :-)

I using a control since the control should always show the same as the X-UA-Compatible version test
depending on if your in IE8 standard mode or IE7 mode (test 3 and 4 shows otherwise). Now the new
tests.


1. Close IE8 and open again in standard mode.

Test IE8 mode <http://css-class.com/test/ie8-XUA-control.htm>

Control and XUA-IE=8: Generated Content and Conditional Comments for IE8. Red, Orange and Blue.

XUA-IE=7: Conditional Comments for IE8. Blue, Green and Red.


2. Selecting the IE7 mode by the IE7 emulation button (close and open IE8).

Test IE7 mode <http://css-class.com/test/ie8-XUA-control.htm>

Control and XUA-IE=7: Conditional Comments for IE7. Blue, Green and Red.

XUA-IE=8: Generated Content and Conditional Comments for IE7. Red, Orange and Blue.


3. Selecting IE7 mode with the developers tool switch (reload IE8 in standard mode first by the
undoing the IE7 emulation button).

Test IE7 mode <http://css-class.com/test/ie8-XUA-control.htm>

All test: Conditional Comments for IE8. Blue, Green and Red.


4. Selecting IE8 mode with the developers tool switch.


Test IE8 mode <http://css-class.com/test/ie8-XUA-control.htm>

All test: Generated Content and Conditional Comments for IE8. Red, Orange and Blue.



Test 1 and 2 confirms the same results as Ingo Chao's test cases [1] [2] [3] and method for testing.
Test 3 and 4 shows the mess if selecting a mode using the developer's tool switch. All testing would
suggest that what is seen on the IE blog about toggling [4] is not currently working as it should.


Any thoughts?


Alex, have you found that link about the vector thing being broken?


[1] <http://archivist.incutio.com/viewlist/css-discuss/97485>
[2] <http://www.satzansatz.de/ie8/xua8.html>
[3] <http://www.satzansatz.de/ie8/xua7.html>
[4] <http://blogs.msdn.com/ie/archive/2008/03/09/using-the-emulate-ie7-button.aspx>


Alan

<http://css-class.com/test/bugs/ie/ie-bugs.htm>


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