This module depends on the following other modules:
Replaces matches of multiple patterns in a given string with given replacements. For each replacement instance, the pattern matchingat the lowest position is chosen. If there are multiple such patterns, then the one specified earliest in the pattern list is chosen.
Usage {{#invoke:MultiReplace|main|input |plain=yes (optional) |pattern1 |replacement1 |pattern2 |replacement2 ... }} Ifplain=yes is specified, then the patterns and replacements are treated as plain text, otherwise asLua Unicode patterns .
An equals sign in a pattern will trigger anUnpaired argument error. Use{{= }}, which expands to an equals sign that will not be interpreted.
local p = {} local function MultiReplace ( args ) local input = args [ 1 ] or "{{{1}}}" local plain = args . plain == "yes" local i = 1 local changeList = {} while args [ i * 2 ] do local change = { pattern = args [ i * 2 ], repl = args [ i * 2 + 1 ]} if not change . repl then return require ( 'Module:Error' ). error { 'MultiReplace: Unpaired argument: <code>' .. ( i * 2 ) .. ' = ' .. mw . text . nowiki ( change . pattern ) .. '</code>' } end changeList [ i ] = change i = i + 1 end local matchList = {} local pos = 1 local len = mw . ustring . len ( input ) local result = "" while pos <= len do local bestStart = len + 1 local bestStop = len local bestChange for _ , change in ipairs ( changeList ) do local start , stop = mw . ustring . find ( input , change . pattern , pos , plain ) if start and ( start < bestStart ) then bestStart = start bestStop = stop bestChange = change end end result = result .. mw . ustring . sub ( input , pos , bestStart - 1 ) if bestChange then local fragment = mw . ustring . sub ( input , bestStart , bestStop ) result = result .. ( plain and bestChange . repl or mw . ustring . gsub ( fragment , bestChange . pattern , bestChange . repl , 1 )) end pos = bestStop + 1 end return result end function p . main ( frame , ...) local args = type ( frame ) ~= 'table' and { frame , ...} or type ( frame . args ) ~= 'table' and frame or frame . args [ 1 ] and frame . args or frame : getParent (). args return MultiReplace ( args ) end return p 
