Hi,
The code has been checked in for the next luatex beta. The current MKIV
beta is already prepared for that (primitive initializations and changed
directlua support). Also, there are a few bug fixes (esp the vf
positioning) that might result in better output. There are some pending
issues with math but they might as well relate to issues with the lm fonts.
Anyway, we tested the beta a few days and it should work ok.
One new feature in MKIV is names lua runs. In the current version we no
longer have multiple lua instances (we decided that it made no sense as
no data can be shared). However, in MKIV we do have a few mildly
isolated instances that are defined as follows:
\definenamedlua[user] [private user instance]
\definenamedlua[third] [third party module instance]
\definenamedlua[module] [module instance]
\definenamedlua[isolated][isolated instance]
the names kind of reflect what their intended usage is. By default one
has no access to global data unless prefixed by global, so for instance
one can access the global character data as in (untested):
\startusercode
tex.sprint(global.characters.data[123].description)
\startusercode
(there is also \usercode{...})
This prevents that users mess up with the data unintended. However,
there is still read and write access so be careful. I see no advantage
in a more strict model than this.
Since each call to lua is reentrant, errors in your scripts will
normally not result in a crash of \MKIV. The error message mentiones the
second argument to the previous definitions.
Hans
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Hans Hagen | PRAGMA ADE
Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
tel: 038 477 53 69 | fax: 038 477 53 74 | www.pragma-ade.com
| www.pragma-pod.nl
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