stringreplace

-- Module for different search and replace operations on strings. local p = {}  -- Takes one string parameter, and returns the string with all characters with special meaning for Lua patterns escaped with a preceding `%`. function p.escape_pattern(text)     -- Replaces each occurrence of any of ().%+-*?[^$ with a `%` and then the character.     local r = string.gsub(text, "[%(%)%.%%%+%-%*%?%[%^%$]", "%%%1")     return r end  -- Returns the first parameter, with all occurrences of the second parameter replaced with the third parameter. -- All special characters are ignored: {{#invoke:StringReplace|replace_all|test.a%1$foo|%1|bar}} results in `test.abarfoo`. function p.replace_all(frame)     local str = frame.args[1]     local strToFind = frame.args[2]     local strToreplaceWith = frame.args[3]     local r = string.gsub(str, p.escape_pattern(strToFind), p.escape_pattern(strToreplaceWith))     return r end  p['encode wiki page name'] = function( frame ) local x = mw.ustring.gsub(  frame.args[1] or '',  '[\'"&_]',  {  ["'"] = ''',  ['"'] = '"',  ['&'] = '&',  ['_'] = ' ',  }  ) return mw.text.trim( x ) end  return p