I just noticed something a bit unusual with sorting and just wondering if this is a bug or a setting that I have some-how missed.

I have created the following set of files:

1.txt
2.txt
3.txt
A.txt
B.txt
C.txt
_1.txt
_2.txt
_3.txt
_A.txt
_B.txt
_C.txt

Sorting is set to name and those files get sorted as I expect (in the order above).

I create some directories with the same names (without the extension), and the sorting is:

1
2
3
_1
_2
_3
_A
_B
_C
A
B
C

Under Alt-(S)ort I have it set to (N)ame
Under Alt-(S)ort, F9 Tree - I have it set to Name as well.

So with files the underscore gets sorted at the end. With directories it gets sorted between numbers and letters.

Is there something I'm missing, because I think these should be sorted the same.