Gnu/coreutils/Differences-from-the-official-Debian-Algorithm

From Get docs

30.3 Differences from the official Debian Algorithm

The GNU coreutils’ version sort algorithm differs slightly from the official Debian algorithm, in order to accommodate more general usage and file name listing.

Minus/Hyphen ‘-’ and Colon ‘:’ characters   
Additional hard-coded priorities in GNU coreutils’ version sort   
Special handling of file extensions