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- -- make table, grouping all data for the same item 
- -- input is 2 columns (item, data) 
-   
- local A 
- while 1 do 
-  local l=io.read() 
-  if l==nil then break end 
-  local _,_,a,b=string.find(l,'"?([_%w]+)"?%s*(.*)$') 
-  if a~=A then A=a io.write("\n",a,":") end 
-  io.write(" ",b) 
- end 
- io.write("\n") 
-