local libraryUtil = require('libraryUtil')
local wrapper = "%s" -- wikitext formatting
local msg_loc = "Lua warning in %s at line %d: %s."
local msg = "Lua warning: %s."
return function (message, level)
libraryUtil.checkType('warn', 2, level, 'number', true)
level = level or 1
if level > 0 then
local _, location = pcall(error, '', level+2)
if location ~= '' then
location = mw.text.split(location:sub(1,-3), ':%f[%d]')
message = msg_loc:format(location[1], location[2], message)
else
message = msg:format(message)
end
else
message = msg:format(message)
end
mw.addWarning(wrapper:format(message))
end
