/usr/share/lmod/6.6/tools/pairsByKeys.lua is in lmod 6.6-0.2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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-- Return an iterator where the keys are sorted.
-- @module pairsByKeys
--------------------------------------------------------------------------
-- This function is described in the book: Programming in Lua by
-- Roberto Ierusalimschy. It has been updated for Lua 5.1.
-- distributed under the Lua license: http://www.lua.org/license.html
--------------------------------------------------------------------------
require("strict")
local sort = table.sort
------------------------------------------------------------------------
-- Return an iterator where the keys are sorted.
-- @param t input table
-- @param[opt] f sort function
function pairsByKeys (t, f)
local a = {}
local n = 0
for k in pairs(t) do
n = n + 1
a[n] = k
end
sort(a, f)
local i = 0 -- iterator variable
local iter = function () -- iterator function
i = i + 1
if a[i] == nil then return nil
else return a[i], t[a[i]]
end
end
return iter
end
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