Hi,
A few words on luatex 0.87 and the beta. As we're progressing to the first stable luatex release (stable in the sense that functionality will become stable, after 1.0 we will continue anyway) a couple of changes take place. And as context is the primary testbed it gets adapted too.
(1) Luatex functionality gets finalized which means that some gets removed, some adapted and some extended. The last months not much changed in context in terms of functionality but adapting to luatex canhave temporary side effects as you might have noticed.
(2) Luatex functionality that was already present but not yet used gets applied and again this should normally not have side effects. It might result in new (or extended) features.
(3) Context code gets optimized but I must admit that there is not much room left for that. Some new luatex functionality makes it possible to code a bit less redundant (handy for tracing). That can result in left over bit and pieces, typos etc. Lucky us we have Wolfgang to check that.
(4) Performance should be a little better but also depends on the source and quality of styles. If you encounter bottlenecks and can prove that it's due to poor context core performance I can have a look at it.
(5) The new font loader is now used and still can have some issues but in general it behaves okay.
(6) There are still some mechanisms that need to be mkiv'd. For instance I'm looking at columnsets. Some of the oldest code (early luatex) probably needs to be checked.
Hans
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