IE5.5: First Look

Friday December 3rd, 1999

I've done some preliminary CSS testing of IE5.5 (available through Specifically I ran IE 5.5 through the battery of David Baron's CSS tests, and found some interesting results. IE 5.5's CSS support has undergone very little change from 5.0, and some regressions were noticable. IE 5.5 seems to pass test 5.3 (CSS2 Universal Selector) that IE 5.0 did not, but it fails two tests in section 6.4.4 (Parsing Test 4 and Test 5) that IE 5.0 apparently passed. There was one other that *may* have passed (9.1.2) where 5.0 failed, and one test in 10.7 *may* have failed where 5.0 passed, but I can't determine these for a certainty. Finally, IE 5.5 still does not pass the Box Acid Test.

According to MS's "What's New in Internet Explorer 5.5" page, IE 5.5 handles more "CSS styles" such as first-letter and first-line, but they don't go into any more detail.

From these results, I'm wondering if MS is giving up completely on significant advances in the CSS support in their current rendering engine. IE on the Mac is supposedly being developed to utilize a new rendering engine, codename "Tasman". Maybe Microsoft is planning something similar for their 6.0 Windows version.

In any event it does not look like the next version of IE will have significant CSS improvements as many hoped and expected.

#90 Re: Re: cache

by danielhill <>

Sunday December 5th, 1999 11:46 PM

You are replying to this message

There's one way to do this - install a caching proxy server, disable both browser's caches. Then only one proxy cache will hold everything. But that takes up system resources and adds latency to the request (must check proxy, then possibly forward it)

Off topic, you say "It would be similar to the way AOL changed when Microsoft tried to leech off of the Instant Messenger.". How can you say MS leeched off AOL? AOL PUBLISHED THE FUCKING SPECS PUBLICALLY. Geez I wish people would see past "MS is bad, AOL rule because they own Netscape"