Module:String

Documentation for this module may be created at Module:String/doc

return {  sub = (function (frame)  local args, pargs = frame.args, frame:getParent().args  return mw.ustring.sub( args[1] or pargs[1] or "", tonumber( args[2] or pargs[2] ), tonumber( args[3] or pargs[3] ) )  end),  length = (function (frame)  local args, pargs = frame.args, frame:getParent().args  return mw.ustring.len( args[1] or pargs[1] or "" )  end),  find = (function (frame)  local args, pargs = frame.args, frame:getParent().args  local start = tonumber( args[3] or pargs[3] )  local res = mw.ustring.find( args[1] or pargs[1] or "", args[2] or pargs[2] or "", start or 1, true )    start = res and (start and 4 or 3) or (start and 5 or 4)  res = res or ""  return args[start] or pargs[start] or res  end),  replace = (function (frame)  local args, pargs = frame.args, frame:getParent().args  local res = mw.ustring.gsub(  args[1] or pargs[1] or "",  mw.ustring.gsub( args[2] or pargs[2] or "", "([][^$%%.*+-?])", "%%%1" ),  args[3] or pargs[3] or "",  tonumber( args[4] or pargs[4] )  )  return res  end),  trim = (function (frame)  local args, pargs = frame.args, frame:getParent().args  local what = mw.ustring.gsub( args[2] or pargs[2] or "", "([][^$%%.*+-?()])", "%%%1" )  local res = mw.ustring.gsub(  mw.ustring.gsub( args[1] or pargs[1] or "", "^[" .. what .. "]*", "" ),  "[" .. what .. "]*$",  ""  )  return res  end), }