Module:If empty: Difference between revisions
m (Changed protection settings for "Module:If empty": High-risk Lua module ([Edit=Require administrator access] (indefinite) [Move=Require administrator access] (indefinite))) |
m (1 revision imported) |
(No difference)
| |
Latest revision as of 14:20, 29 April 2022
 | 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 depends on the following other modules: |
 | This Lua module is used on approximately 2,710,000 pages, or roughly 318449% of all pages. To avoid major disruption and server load, any changes should be tested in the module's /sandbox or /testcases subpages, or in your own module sandbox. The tested changes can be added to this page in a single edit. Consider discussing changes on the talk page before implementing them. |
This module supports Template:If empty.
Tracking/maintenance category
local p = {}
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