模块:If empty：修订间差异

2022年12月1日 (四) 07:22的最新版本

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此-{zh-hans:模块; zh-hant:模組;}-使用Lua语言：

Module:Arguments

Warning

This Lua module is used on many pages and changes may be widely noticed. Test changes in the module's /sandbox or /testcases subpages, or in your own module sandbox. Consider discussing changes on the talk page before implementing them.

This module supports Template:If empty.

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

end

return p

@@ 第4行： / 第4行： @@
 	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,
+	local lastk = 0
-	-- 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
+		lastk = k
 	end
 end
 return p