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add a truthy check too
Line 29: Line 29:  
if return_value == nil and frame.args[1] ~= nil then
 
if return_value == nil and frame.args[1] ~= nil then
 
local arg1=mw.ustring.match(frame.args[1], '[%d,]+')
 
local arg1=mw.ustring.match(frame.args[1], '[%d,]+')
return_value = tonumber(frame:callParserFunction('formatnum', arg1, 'R'))
+
if arg1 and arg1 ~= '' then
 +
return_value = tonumber(frame:callParserFunction('formatnum', arg1, 'R'))
 +
end
 
end
 
end
 
 

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