"Jonathan Sauer" <[EMAIL PROTECTED]> writes:
> take the following PlainTeX file:
>
> %&luatex
> \def\recatcode#1{%
> \directlua0{%
> tex.sprint('\luaescapestring{\unexpanded{#1}}')%
> texio.write_nl('\luaescapestring{\unexpanded{#1}}')%
> }%
> }
>
> \recatcode{%
> \def\test#1{`#1'}%
> }
>
> \bye
>
>
> This results in
>
> This is LuaTeX, Version snapshot-0.30.0-2008093018 (Web2C 7.5.7)
> (MacroParameterCharacter.tex
> \def \test ##1{`##1'}
> ! Parameters must be numbered consecutively.
> <to be read again>
> ##
> l.1 \def \test ##
> 1{`##1'}
> \recatcode ...uaescapestring {\unexpanded {#1}}')}
>
> l.12 }
>
> ? x
> TeX interrupted. No pages of output.
> Transcript written on MacroParameterCharacter.log.
>
>
> So `#' is transformed into `##' when passed from TeX to Lua.
No, when TeX prints.
> Is this a bug or a feature?
Feature. Quite an annoying one in my opinion, but there you are.
--
David Kastrup
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