Function updateLine

mini-code-editor/cm/lib/codemirror.js:760–760

(n)

      // Update the selection
      function updateLine(n) {return n <= Math.min(to.line, to.line + lendiff) ? n : n + lendiff;}
      setSelection(selFrom, selTo, updateLine(sel.from.line), updateLine(sel.to.line));

      // Make sure the scroll-size div has the correct height.