local p = {}
function p.main(frame)
local args = require('Module:Arguments').getArgs(frame, {wrappers = 'Template:If empty', removeBlanks = false})
local lastk = 0
for k,v in ipairs(args) do
if v ~= '' then
return v
end
lastk = k
end
-- For backwards compatibility reasons, the first 8 parameters can be unset instead of being blank,
-- even though there's really no legitimate use case for this. At some point, this will be removed.
for i = lastk + 1, 9 do
if args[i] and args[i] ~= '' then
-- If any uses of this template depend on the behavior above, add them to a tracking category.
-- This is a rather fragile, convoluted, hacky way to do it, but it ensures that this module's output won't be modified
-- by it.
frame:extensionTag('ref', '[[Category:Instances of Template:If_empty missing arguments]]', {group = 'TrackingCategory'})
frame:extensionTag('references', '', {group = 'TrackingCategory'})
return args[i]
end
end
end
return p
