Is there any differences in the file format saved by different LibreOffice releases?

English
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#1

It is noticed that LibreOffice got releases frequently, I would like to know if these different releases affect the “format” of a *.xls file saved by LibreOffice Cals?

As I will develop a program that will read the data from a *.xls worksheet template created by LibreOffice Cals, I just would like to know if there are tiny differences in the format of *.xls documents saved by different releases of LibreOffice Cals.
Any difference may affect the performance of the program.

#2

.xls are not native, which means, you calc find its a foreign language, it translate it into native while processing and then translate it back if you still want .xls.

#3

Hi Anonymous,

Any tweak to our XLS import or export filters can affect the way that we process and write out our XLS files. For the specifics on what has changed, I believe that this code lives under filter/source/:

#4

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