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-- pairs_except(t, k) is the same as pairs(t), but with t[k] skipped
return function(t,exception)
if exception == nil then return pairs(t) end
local function next_except(t,k)
local k2,v2 = next(t,k)
if k2 == exception then k2,v2 = next(t,k2) end
return k2,v2 end
return next_except, t, nil end
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