local p = {}  local function _main( args )  local sep = mw.message.new( 'comma-separator' ):plain()  return table.concat( args, sep ) end  function p.main( frame )  local origArgs  if frame == mw.getCurrentFrame() then  -- We're being called via #invoke. If the invoking template passed any arguments,  -- use them. Otherwise, use the arguments that were passed into the template.  origArgs = frame:getParent().args  for k, v in pairs( frame.args ) do  origArgs = frame.args  break  end  else  -- We're being called from another module or from the debug console, so assume  -- the arguments are passed in directly.  origArgs = frame  end   -- Use integer args only, and allow for explicit positional arguments  -- that are specified out of order, e.g. {{br separated entries|3=entry3}}.  -- After processing, the args can be accessed accurately from ipairs.  local args = {}  for k, v in pairs( origArgs ) do  if type( k ) == 'number'  and k >= 1  and math.floor( k ) == k  and mw.ustring.match( v, '%S' ) -- Remove blank or whitespace values.  then  table.insert( args, k )  end  end  table.sort( args )  for i,v in ipairs( args ) do  args[ i ] = origArgs[ v ]  -- Trim whitespace from all args.  if type( args[ i ] ) == 'string' then  args[ i ] = mw.text.trim( args[ i ] )  end  end   return _main( args ) end  return p