Adding characters to output of text-string

[Toulon7559]

Translating the contents of the KNMI Weather-info for an application, (amongst others) I use following lua-script-line for generation of output

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file:write("$forecast = " .. summary1 .. ";\n") --forecast

A typical result today from that lua-script-line is

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$forecast = Zonnige perioden;

However, the application reading this textstring requires to see

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$forecast = "Zonnige perioden";

Simple question, but causing headache:
how to get those enclosing " into the string?
Have looked at lua.org, but not yet seen a suitable answer

In other words:
need to find a way to insert ASCII-character hex022 into the text-string coming from that lua-script-line.

[boum]

Either switch your double quotes to single quotes.
Or just escape the character:

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file:write("$forecast = \"" .. summary1 .. "\";\n") --forecast

[Toulon7559]

Thanks for the hint!