Function copyState

external/.scrollLibs.js:2261–2277

(mode, state)

  }

  function copyState(mode, state) {
    if (state === true) {
      return state
    }
    if (mode.copyState) {
      return mode.copyState(state)
    }
    var nstate = {}
    for (var n in state) {
      var val = state[n]
      if (val instanceof Array) {
        val = val.concat([])
      }
      nstate[n] = val
    }
    return nstate
  }

  // Given a mode and a state (for that mode), find the inner mode and
  // state at the position that the state refers to.