TeX comments in Lua strings - message: Undefined control sequence

TeX comments in Lua strings - message: Undefined control sequence

[Jaroslav Hajtmar]

Hello,
Is there any possibility use TeX comments (text behind  character %) in 
Lua strings?

When I use comment char % inside luastring, then rest of string (i.e. 
next TeX definitions) are for TeX invisible.

For example:
When I make string :

TeXDefsByLua=[[
\def\printline{
\directlua{printline()}
\par\hrule\par
}

\def\printall{
\directlua{printall()}
\par\hrule\par
}

]]

tex.sprint(TeXDefsByLua)

then is all right,

BUT when I make string :

TeXDefsByLua=[[
\def\printline{ % my comment inside string
\directlua{printline()}
\par\hrule\par
}

\def\printall{
\directlua{printall()}
\par\hrule\par
}

]]

tex.sprint(TeXDefsByLua)

then I get message: "Undefined control sequence"

Is there possibility use TeX comments inside Lua strings?

Thanx Jaroslav
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