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-- qw"aaa bbb ccc" --> { "aaa", "bbb", "ccc" }
local function qw(str)
local out = {}
for x in str:gmatch"%S+" do
table.insert(out, x)
end
return out
end
-- qw.s"aaa bbb ccc" --> { aaa=true, bbb=true, ccc=true }
local function qws(str)
local out = {}
for x in str:gmatch"%S+" do
out[x] = true
end
return out
end
-- for k in qw.i"aaa bbb ccc" do ... end
local function qwi(str) return pairs(qws(str)) end
return setmetatable({qw=qw,s=qws,i=qwi},{__call=function(_,...) return qw(...) end})
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