Function copyChunk

static/editor.md/lib/codemirror/addon/merge/merge.js:426–430

(dv, to, from, chunk)

  }

  function copyChunk(dv, to, from, chunk) {
    if (dv.diffOutOfDate) return;
    to.replaceRange(from.getRange(Pos(chunk.origFrom, 0), Pos(chunk.origTo, 0)),
                         Pos(chunk.editFrom, 0), Pos(chunk.editTo, 0));
  }

  // Merge view, containing 0, 1, or 2 diff views.