Re: Multiple cases of unexpected behaviour in luametatex

["Marcel Fabian Krüger" <tex@2krueger.de>]

On Fri, Jul 03, 2020 at 09:56:28PM +0200, Hans Hagen wrote:
> On 7/3/2020 2:55 PM, Marcel Fabian Krüger wrote:
> > Hi,
> > 
> > I recently noticed some cases where luametatex behaved in unexpected
> > ways:
> > 
> >    - The "Extra \fi" error isn't triggered, instead an extra `\fi`
> >      freezes luametatex. (Can be reproduced by compiling a document which
> >      only consists of a single \fi)
> 
> i already fixed here (noticed it when documenting some conditionals)

Great.

> 
> >    - token.new can only create some `data` tokens, but it doesn't apply
> >      bound checking on it's arguments:
> 
> there is no checking yet, there is an upper limit of 0x1FFFFF, so i'll add a
> check for that

OK, that explains it.

[...]
> 
> eventually i want all to have reasonable ranges  in the token interface (not
> per se the same as in the engine itself but that's a black box anyway) which
> involves some offsetting .. i do that stepwise in order to keep a working
> engine (the token interface is not used in context that much)

Please let me know if there is anything I can do to help with that.

Anyway, tehre is another thing I am wondering about: In the latest
luametatex versions, error help strings do not seem to work like they used to.
Especially after \errhelp{some help}\errmessage{error} or
tex.error('fdfd', {'some help'}) in the 'handle_error_hook'
callback, tex.gethelptext returns nil. gethelptext still works for
errors triggered by TeX itself.

One completely different question:
When running luametatex (of course with appropriate format/lua init
script options) but without a TeX file or command, luametatex does not
expect interactive input but instead tries to read the input file
'luametatex.tex'. (Where luametatex does not seem to be hardcoded but
derived from argv[0]) Is there a way to overwrite this default input
file name?

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

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