libfile-sort-perl 1.01-2 (amd64 binary) in ubuntu jammy

 File::Sort sorts text files by lines (or records). Comparisons are based on
 one or more sort keys extracted from each line of input, and are performed
 lexicographically. By default, if keys are not given, sort regards each input
 line as a single field. The sort is a merge sort. If you don't like that,
 feel free to change it.