Since v2.9 Abyss has had logfile rotation, but the naming of rotated logfiles is based on the kind of ridiculous ancient unix convention, namely appending the qualifier (either an integer or a date/timestamp) on the end of a prefix...with no way to keep the file extension (.log) intact. This makes it a real pain to open old log files, since the OS doesn't know what the heck they are, even on macOS.
Instead of just having the Rotated File Name Prefix field and dropping the qualifier onto the end of that, could it be something intelligent that preserves the file extension? That could be just adding a Rotated File Name Suffix field (where we could enter "log") and dropping that onto the end of the rotated log filename, which seems very easy and straightforward. Or for something fancier you could change the field to something like Rotated File Name Format, and allow the user to drop in a unique substitution character representing the incrementing integeter or the date/timestamp indicator.
Thanks!