Module:If empty: Difference between revisions

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Revision as of 18:33, 26 January 2023

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<translate> This module is [[<tvar name=1>Special:MyLanguage/Category:Modules subject to page protection</tvar>|subject to {{<tvar name=2>#if:</tvar>|cascading|page}} protection]].</translate> <translate> It is a highly visible module in use by a very large number of pages.</translate> <translate> Because vandalism or mistakes would affect many pages, and even trivial editing might cause substantial load on the servers, it is [[<tvar name=1>Special:MyLanguage/Project:Protected page</tvar>|protected]] from editing.</translate>

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Uses Lua:

Module:Arguments

This module supports Template:If empty.

Tracking/maintenance category

Category:Instances of Template:If empty missing arguments (0)

local p = {}

function p.main(frame)
	local args = require('Module:Arguments').getArgs(frame, {wrappers = 'Template:If empty', removeBlanks = false})

	for k,v in ipairs(args) do
		if v ~= '' then
			return v
		end
	end

end

return p

@@ Line 3: / Line 3: @@
 function p.main(frame)
 	local args = require('Module:Arguments').getArgs(frame, {wrappers = 'Template:If empty', removeBlanks = false})
-	-- 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.
-	local lowestNil = math.huge
-	for i = 8,1,-1 do
-		if args[i] == nil then
-			args[i] = ''
-			lowestNil = i
-		end
-	end
 	for k,v in ipairs(args) do
 		if v ~= '' then
-			if lowestNil < k 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'})
-			end
 			return v
 		end
 	end
 end
 return p