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> Hmm, I must be slow. I can't figure out how to convert a string with represented control characters into a string with actual control characters.
> E.g.:
> local input = [[ line 1\nline2 ]]
> str:gsub("\\(.)", '\%1') -- doesn't work

control={n="\n", r="\r"} -- fill as needed
str:gsub("\\(.)", control)