the attached zip file contains an excel spreadsheet
which is not converted properly with command line:
xlhtml -xp:0 -csv well.xls
column I and J are displayed as integers. Both Excel
and Open Office Calc 1.9.79 (2.0 beta) display these
colums as dates in dd-mmm-yyyy format.
e.g. I3 is displayed as 29-feb-1960 in Excel and Open
office but output by xlhtml as 21975.
This problem also exists in xls2csv (part of catdoc).