Hi there,
it might be that I misread the specification of \require - but perhaps
you should ensure that the documentation of those LUA primitives is made
precise and stresses that no file ending is allowed.
I will update pgfplots accordingly. Unless I am mistaken, my Tests did
not reveal any problems with lualatex.
Best regards
Christian
Am 22.11.2012 00:34, schrieb Aditya Mahajan:
> On Wed, 21 Nov 2012, Thomas Weißschuh wrote:
>
>> Hi,
>>
>> when using (latest) pgfplots with ConTeXt standalone the following error
>> occurs in tex/generic/pgfplots/util/pgfplotsutil.code.tex:1979 :
>>
>> ! LuaTeX error <\directlua >:1: module 'pgfplots.lua' not found:
>>
>> This is the same exact message and error location as the bug reported
>> by Aditya last month, but this time it's a different issue.
>> It seems like the workaround for the previous bug shadowed this one.
>>
>> For the record: My version of pgfplot has the fix for the previous bug
>> already included.
>>
>> Problem background:
>> The lua function require() appends the .lua file extension to the module
>> name. So require('pgfplots.lua') looks for the file pgfplots.lua.lua,
>> which then fails.
>
> Strictly speaking, require("...") searches for both filename.lua and
> filename.so.
>
> require("pgfplots.lua") searchs for the file "pgfplots/lua.lua" and
> "pgfplots/lua.so"
>
>> There was a discussion [0] on the ConTeXt list in which Aditya
>> mentions [1],
>> that dofile('pgfplots.lua') may be the right function in this
>> situtation.
>
> I looked into it more, and I think that the original patch my Thomas,
> changing require"pgfplots.lua") to require("pgfplots"), is the only
> method that will work with both LaTeX and ConTeXt.
>
> I suggested dofile(...) because the standard approach in ConTeXt is to
> load lua files using
>
> dofile(resolvers.findfile("pgfplots.lua"))
>
> However resolvers.findfiles is not a luatex function; rather it is a
> function defined by ConTeXt data-res.lua and replaces kpse.find_all.
> resolvers.findfiles caches the result and offers some logging abilities.
>
> Since ConTeXt provides its own library for searching and loading
> files, it disables the kpse library (it is debatable whether disabling
> core luatex features is good idea or not, but that is OT here). So,
> the natural option:
>
> dofile(kpse.find_all("pgfplots.lua"))
>
> will work in LaTeX but fail in ConTeXt.
>
> On the other hand, require("pgfplots") will work both in LaTeX and
> ConTeXt.
>
> Aditya
>
> PS: I haven't tested the LaTeX part yet, because my distro's TL
> package does not have pgfplots.lua as part of the pgfplots package.
>
>
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