No, without adjusting the code, this cannot be done. Theoretically, it should be fairly easy to configure and eliminate this limitation. For version 3-5, voluterer did something similar for conditional formatting.
The code is at http://opengrok.libreoffice.org/xref/core/sc/inc/sortparam.hxx , but this is not only done with the MAXSORT increase. There should also be a corresponding change in ui and, ideally, a switch to std :: vector or another dynamic data structure. This is a simple task, and I just created https://bugs.freedesktop.org/show_bug.cgi?id=45747 . Therefore, if you want to join the development of Libreoffice, you can easily do this.
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