On 10/26/2020 12:09 AM, Rik Kabel wrote:

Hello all,

I have noticed some differences between the MkIV installed as part of LMTX and the MkIV installed via first-setup.

Which should be used going forward when one wants to use MkIV?

(One difference: \contextkind is defined in file context.mkiv installed via first-setup. It is not defined in the file of the same name installed as part of LMTX. Another, more significant difference, is loading modules.)

mkiv works with luatex, lmtx needs luametatex

currently the functionality is mostly the same but further development happens in lmtx

so, if mkiv works for you, just keep using it .. you can try your document with lmtx and normally that should work ok

there is a distinction between

- core functionality (seldom changes)
- tricky things (migh tbe done better in lmtx)
- more radical new things hard to do in regular tex (will be in lmtx only)

the luametatex engine is more advanced than luatex (which we cannot change any more in fundamental ways as it's also used outside context) but with luametatex we can do (maybe) crazy things; the luametatex enfine has all kind of improvements in the rendening, adds functionality that makes implementations somewhat cleaner, is faster and uses less memory, redesigns/organizes some internals (e.g. get rid of the sometimes fuzzy accumulated engine mix), adds more interfaces in lua, is self contained, etc ... see presentation(s) last ctx meeting.

currently i'm applying some of the more drastic new thing: more advance macro argument parsing options, several levels of (macro) protection, etc which actually might lead to issues (simple to deal with as most are interface related, not functionality)

so ... you can use mkiv and/or snapshot the current lmtx and/or try the latest greatest when it showsup

Hans

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                                          Hans Hagen | PRAGMA ADE
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Hans,

Let me rephrase the question.

With the following example:

\starttext

\contextkind

\stoptext

The standalone installation returns a document containing "beta" and context --luatex with the LMTX installation complains of an undefined control sequence.

The file context.mkiv differs between the two installations.

If the two are expected to differ, I am asking which is the reliable version.

You had stated in an earlier email that the --luatex option provided to an LMTX installation will produce an MkIV result, but that does not seem to still be the case.

--
Rik