Per file option "Enable regular expressions in formulas" in LibreOffice Calc

[Murz]

Is there any way to create document-depended option “Enable regular expressions in formulas”? As I understand, enabling this option globally can broke (change results) some formulas, when opening other XLS or ODS documents.
For example, formula =COUNTIF(A1:A100,'1.') is regexp-depended.

So I afraid to enable this option globally, because I can see wrong results in some documents. Can I write macros or other feature that will enable regular expressions in formulas only for current document, and stay this option disabled for all other documents?

[karolus]

This Option ( and many others ) is already a per file-option, because the setting is stored into the file.

unfortunatly - if you change it, the changed Option will reflect to all currently open files