Difference between pages "Module:If empty" and "Module:If empty/sandbox"

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m (2 revisions imported)
 
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{{<includeonly>safesubst:</includeonly>#invoke:If empty|main}}<noinclude>{{Documentation}}</noinclude>
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local p = {}
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function p.main(frame)
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local args = require('Module:Arguments').getArgs(frame, {wrappers = 'Template:If empty', removeBlanks = false})
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local lastk = 0
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for k,v in ipairs(args) do
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if v ~= '' then
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return v
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end
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lastk = k
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end
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-- For backwards compatibility reasons, the first 8 parameters can be unset instead of being blank,
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-- even though there's really no legitimate use case for this. At some point, this will be removed.
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for i = lastk + 1, 9 do
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if args[i] and args[i] ~= '' then
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-- If any uses of this template depend on the behavior above, add them to a tracking category.
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-- This is a rather fragile, convoluted, hacky way to do it, but it ensures that this module's output won't be modified
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-- by it.
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frame:extensionTag('ref', '[[Category:Instances of Template:If_empty missing arguments]]', {group = 'TrackingCategory'})
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frame:extensionTag('references', '', {group = 'TrackingCategory'})
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return args[i]
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end
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end
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end
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return p