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Hi Egor


A correct code may look like the following:

function quote (s)
   -- find maximum length of sequences of equal signs
   local n = -1
   for w in string.gmatch(s, "]([]=]*)]") do
      for e in string.gmatch(w, "=*") do
         n = math.max(n, #e)
      end
   end
   -- The rest of the code is exactly the same as in the book

I test your code but it seems it does not handle all cases at all:

Lua 5.2.3  Copyright (C) 1994-2013 Lua.org, PUC-Rio

function quote(s)

    local n = -1
    for w in string.gmatch(s, "]([]=]*)]") do
        for e in string.gmatch(w, "=*") do
            n = math.max(n, #e)
        end
    end
    local eq = string.rep("=", n+1)
    return string.format(" [%s[\n%s]%s] ", eq, s, eq)
end

print(quote"]=]==")

 [==[
]=]==]==]




Regards,
Tomás