Function rebaseHist

external/.scrollLibs.js:7473–7479

(hist, change)

  }

  function rebaseHist(hist, change) {
    var from = change.from.line,
      to = change.to.line,
      diff = change.text.length - (to - from) - 1
    rebaseHistArray(hist.done, from, to, diff)
    rebaseHistArray(hist.undone, from, to, diff)
  }

  // Utility for applying a change to a line by handle or number,
  // returning the number and optionally registering the line as