To Remove Enter marks (n) in Lua

Question

I have using LuaLaTeX Version : 1.12.0 and i have converting XML to LaTeX using Lua Script.
I have need to remove enter marks in Lua Scripts. How to achieve this.
documentclass{article}
begin{document}
title{Classical and Quantum Gravity}
author{Author Here}
maketitle
end{document}

I have tried many ways in Lua. My Lua Code is:
TeXIn=string.gsub(TeXIn,[[n]],[[]])
TeXIn=string.gsub(TeXIn,[[stringn]],[[]])
TeXIn=string.gsub(TeXIn,[[nstring]],[[]])
TeXIn=string.gsub(TeXIn,[[stringnstring]],[[]])
TeXIn=string.gsub(TeXIn,[[par]],[[]])
io.write(TeXIn) -- for display the text in terminal/command prompt
tex.sprint(TeXIn) -- for print the text and view in PDF

tex.tprint is not working.
How to solve this problem?

David Carlisle · Accepted Answer

It appears that you want to print the entire document in a semi-verbatim style as one long line wrapped string
so if z1z.tex is
documentclass{article}
begin{document}
title{Classical and Quantum Gravity}
author{Author Here}
maketitle
end{document}

and z1z.lua is
local f = assert(io.open("z1z.tex", "rb"))
local TeXIn = f:read("*all")
f:close()

tex.sprint(TeXIn)

then these can be combined with the luatex document

documentclass{article}

begin{document}

defzz#1{{%
catcode10=10 % control-j is space
catcode`=12 % verbatimish output
catcode`{=12 % verbatimish output
catcode`}=12 % verbatimish output
ttfamily    % monospace
directlua{dofile('#1')}
}}

zz{z1z.lua}

end{document}

which produces the result

The Lua here is doing nothing other than inputting the file, but perhaps in your real use case, it may play a role.

To Remove Enter marks (n) in Lua

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