Module:Separated entries
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 | This Lua module is used on approximately 1,000 pages. To avoid large-scale disruption and unnecessary server load, any changes to this module should first be tested in its /sandbox or /testcases subpages. The tested changes can then be added to this page in one single edit. Please consider discussing any changes on the talk page before implementing them. |
 | Uses Lua: |
Usage
Module:Separated entries serves as a template front-end to mw.text.listToText. It takes any number of positional parameters and pieces them together with |separator=. |conjunction= can be optionally defined if a different separator is desired between the last and second last items. The starting positional parameter can be specified using |start=. Leading and trailing whitespace is stripped. To add deliberate leading and trailing whitespace, use the HTML escape code   for a space and for a "newline". Separated entries does not raise any errors by design.
{{#invoke:Separated entries|main|separator=...}}
Tests
Module:Separated entries/testcases: 
All tests passed.
| Name | Expected | Actual | |
|---|---|---|---|
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testBr | ||
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testComma | ||
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testMain |
-- This module takes positional parameters as input and concatenates them with
-- an optional separator. The final separator (the "conjunction") can be
-- specified independently, enabling natural-language lists like
-- "foo, bar, baz and qux". The starting parameter can also be specified.
local compressSparseArray = require('Module:TableTools').compressSparseArray
local p = {}
function p._main(args)
local separator = args.separator
-- Decode (convert to Unicode) HTML escape sequences, such as " " for space.
and mw.text.decode(args.separator) or ''
local conjunction = args.conjunction and mw.text.decode(args.conjunction) or separator
-- Discard values before the starting parameter.
local start = tonumber(args.start)
if start then
for i = 1, start - 1 do args[i] = nil end
end
-- Discard named parameters.
local values = compressSparseArray(args)
return mw.text.listToText(values, separator, conjunction)
end
local function makeInvokeFunction(separator, conjunction, first)
return function (frame)
local args = require('Module:Arguments').getArgs(frame)
args.separator = separator or args.separator
args.conjunction = conjunction or args.conjunction
args.first = first or args.first
return p._main(args)
end
end
p.main = makeInvokeFunction()
p.br = makeInvokeFunction('<br />')
p.comma = makeInvokeFunction(mw.message.new('comma-separator'):plain())
return p