texexec (and context) stops when using \externalocp
Trying to get some sort of 'implicit' bidi with luatex, I though of using an (extenal) OCP filter as it is much easier than messing with luatex nodes, and it respects TeX grouping. The attached example loads the do_bidi.py script as an \externalocp, it works fine with plain luatex, but not with 'texexec', using 'context' I get: MtxRun | fatal error, message: luatex: execution interrupted Any ideas? Is there a lua equivalent to \externalocp ? Regards, Khaled -- Khaled Hosny Arabic localizer and member of Arabeyes.org team
Khaled Hosny wrote:
Trying to get some sort of 'implicit' bidi with luatex, I though of using an (extenal) OCP filter as it is much easier than messing with luatex nodes, and it respects TeX grouping.
The attached example loads the do_bidi.py script as an \externalocp, it works fine with plain luatex, but not with 'texexec', using 'context' I get:
MtxRun | fatal error, message: luatex: execution interrupted
Any ideas? Is there a lua equivalent to \externalocp ?
Luatex crashes because it attempts to call a kpathsea function, but the kpathsea search library is never initialized by context. The crash is an oversight in luatex.exe that I will try to fix for the next version. Whether hte default context mkiv will ever support external OCPs is upto Hans, but I would not be surprised doubt it never will. To run the example, you can add \ctxlua{kpse.set_program_name('luatex')} to the top of your file, then it will work. Best wishes, Taco
On Wed, Dec 10, 2008 at 10:11:05AM +0100, Taco Hoekwater wrote:
Khaled Hosny wrote:
Trying to get some sort of 'implicit' bidi with luatex, I though of using an (extenal) OCP filter as it is much easier than messing with luatex nodes, and it respects TeX grouping.
The attached example loads the do_bidi.py script as an \externalocp, it works fine with plain luatex, but not with 'texexec', using 'context' I get:
MtxRun | fatal error, message: luatex: execution interrupted
Any ideas? Is there a lua equivalent to \externalocp ?
Luatex crashes because it attempts to call a kpathsea function, but the kpathsea search library is never initialized by context.
The crash is an oversight in luatex.exe that I will try to fix for the next version. Whether hte default context mkiv will ever support external OCPs is upto Hans, but I would not be surprised doubt it never will.
To run the example, you can add
\ctxlua{kpse.set_program_name('luatex')}
to the top of your file, then it will work.
Thanks for the quick help, you saved my day! Regars, Khaled -- Khaled Hosny Arabic localizer and member of Arabeyes.org team
participants (2)
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Khaled Hosny -
Taco Hoekwater