[metapost] Can I use interactive mode in Lua?

[Hans Hagen]

On 10/15/2017 2:40 PM, Rui Zhang wrote:
> The standalone mpost program has online error recovery.
> When I use mplib in LuaTeX I lose that feature.
> (I use luamplib.sty, and sometimes the error messages stack up and are very difficult to read.)
> 
> I wonder if it is possible to use interactive mode in Lua.
> Apparently setting interaction to 'errorstopmode' (which is by default) does not help.  (It's working as if in scroll mode - I cannot even let it stop on the first error.)  I don't know if it is due to the hard-coded noninteractive=1 in lmplib.c mplib_new().  The comment on that line says it is "required !".  So I'm out of luck?
when a macro package uses the library then it has to make sure it 
reports the errors which are available in the result table

Hans


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