Module:Anchor

This Lua module is used on approximately 43,000 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 is subject to page protection. It is a highly visible module in use by a very large number of pages, or is substituted very frequently. Because vandalism or mistakes would affect many pages, and even trivial editing might cause substantial load on the servers, it is protected from editing.

This module implements {{anchor}}. Please see the template page for documentation.

-- This module implements {{anchor}}.

local getArgs = require('Module:Arguments').getArgs
local tableTools = require('Module:TableTools')

local p = {}

function p.main(frame)
	-- Get the positional arguments from #invoke, remove any nil values,
	-- and pass them to p._main.
	local args = getArgs(frame)
	local argArray = tableTools.compressSparseArray(args)
	return p._main(unpack(argArray))
end

function p._main(...)
	-- Generate the list of anchors.
	local anchors = {...}
	local ret = {}
	for _, anchor in ipairs(anchors) do
		ret[#ret + 1] = '<span class="anchor" id="' .. anchor .. '"></span>'
	end
	return table.concat(ret)
end

return p