41a42
>     skip = size
43a45,46
>       @workbook.add_shared_string @incomplete_sst
>       skip += @incomplete_skip
44a48
>       @incomplete_skip = nil
46c50
<     size
---
>     skip
54a59,61
>     elsif !@incomplete_skip.nil?
>       pos =  @incomplete_skip
>       @incomplete_skip = nil
61c68
<     @incomplete_string, @sst_size, @sst_offset, @incomplete_sst = nil
---
>     @incomplete_string, @sst_size, @sst_offset, @incomplete_sst = nil, @incomplete_skip = nil
177a185,192
>         @incomplete_skip = skip
>         pos += sst.available
>       else
>         @workbook.add_shared_string sst
>         pos += sst.available + skip
>         if pos > worksize
>           @incomplete_skip = pos - worksize
>         end
179,180d193
<       @workbook.add_shared_string sst
<       pos += sst.available + skip