Re: [NTG-context] update

["Jairo A. del Rio via ntg-context" <ntg-context@ntg.nl>]

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Hi, Hans. The following happens with the last update:

loading         > ConTeXt Node Macros / Page Building
resolvers       > lua > unknown file 'node-pag.lua'

error loading file: node-pag.lua (aborting)

Indeed, the file is missing in the distribution (there's only
node-pag.mkxl). Regards

El mié, 26 abr 2023 a la(s) 16:56, Hans Hagen via ntg-context (
ntg-context@ntg.nl) escribió:

> Hi,
>
> I uploaded a new version with some new features discussed at the end of
> this mail.
>
> - A next version of luatex will break context (format making etc) but
> the change is unavoidable because of other macro package demands wrt
> security (context does that differently). The low level start up command
> has been adapted so unless you update indepdently thinsg should work ok.
>   Of course this has no consequences for lmtx.
>
> - I've done a bit of callback cleanup (like getting rid of some mkiv
> luatex left-overs). It should have no effect on regular usage.
>
> - There again a few improvements wrt math (this time dealing with
> accents artifacts in some fonts). We check all the free math fonts for
> potential issues and then try to fix it (read: deal with it). It's a lot
> of work but we're getting there.
>
> - A few reported buglets have been fixed.
>
> - The biggest addition is however a new number model. In metapost one
> can now use 'posit' (positfun instance) as number mode which will use
> (currently 32 bit but at some point 64 bit) posit unums. It's also bit
> of a playground because 32 bit posits are not more accurate than 64 bit
> doubles. It anyhow exposed some potential issues that we'll look into.
>
> - There's also a (again currently 32 bit) posit library at the Lua end
> as playground.
>
> - However, 32 bit posits come in handy at the tex end because they pack
> better accuracy in 32 bits than floats and it makes it possible to have
> native floats, so we have:
>
> \newfloat  (uses \floatdef, register like \dimendef is used in \newdimen)
>
> \newposit  (uses \positdef, like \dimensiondef etc)
>
> \floatexpr (like \numexpr)
>
> \iffloat   (like \ifnum) (also \ifabsfloat and i'll add the others too)
>
> Actually it adds an extra range of registers so it bumps memory usage a
> bit. I'm considering lowering the number of registers (currently 64K per
> category) because after all, if 64K is not enough then we can as well
> stick to 32K or 16K (for some even less). There's always Lua for
> unlimited storage of quantities.
>
> So,
>
> \newfloat\fooA
>
> \scratchdimen=123.456pt\relax        [\type{dim:}
> \the\scratchdimen==123.456pt]\par
> \fooA        =123.456\relax          [\type{pos:} \the\fooA
> ==123.456]  \par
> \fooA        =\scratchdimen\relax    [\type{pos:} \the\fooA
> ==123.456]  \par
> \scratchdimen=\fooA\relax            [\type{dim:}
> \the\scratchdimen==123.456pt]\par
> \scratchdimen\dimexpr\fooA+10pt\relax[\type{dim:}
> \the\scratchdimen==133.456pt]\par
>
> produces
>
> [dim: 123.456pt==123.456pt]
> [pos: 123.45600128173828==123.456]
> [pos: 123.45599365234375==123.456]
> [dim: 123.456pt==123.456pt]
> [dim: 133.456pt==133.456pt]
>
> As you can see dimens will get mapped onto floats not as integers
> (scaled points) but in pt units. Counts stay numbers. I need to handle
> glue too (not yet done).
>
> In the future I might use this for fractions but there might be some
> rough ends so for now it's experimental.
>
> Hans
>
>
>
>
> -----------------------------------------------------------------
>                                            Hans Hagen | PRAGMA ADE
>                Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
>         tel: 038 477 53 69 | www.pragma-ade.nl | www.pragma-pod.nl
> -----------------------------------------------------------------
>
> ___________________________________________________________________________________
> If your question is of interest to others as well, please add an entry to
> the Wiki!
>
> maillist : ntg-context@ntg.nl /
> https://www.ntg.nl/mailman/listinfo/ntg-context
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> wiki     : https://contextgarden.net
>
> ___________________________________________________________________________________
>

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___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!

maillist : ntg-context@ntg.nl / https://www.ntg.nl/mailman/listinfo/ntg-context
webpage  : https://www.pragma-ade.nl / http://context.aanhet.net
archive  : https://bitbucket.org/phg/context-mirror/commits/
wiki     : https://contextgarden.net
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