custom sorting

Question

Is it possible to make vifm to sort files like this:

_1.txt
_a.txt
_c.txt
.1.txt
.2.txt
.a.txt
003.png
004.png
2.txt
201.txt
21.txt
210.txt
a.txt
b.txt
d.txt

that is based on this ordering:

1. Underscore
2. Dot
3. Numbers
4. Alphabet

Thank you

Answer 1

No, sorting just compares character codes for the most part. Custom sorting functions in Lua might be added later (although not sure about their performance on large number of files).