Re^8: perllocale weirdness, bug, or...?

[Krambambuli]

Thanks for the tip - I really hoped it might solve the issue, but unfortunately it does not.

For the file test.txt (TAB separated fields) being

a_2     2
a2      1

I still get

$ sort -k 1,1 test.txt | cut -f 1
a2
a_2

whereas when there is no second field then the result is reversed,

a_2
a2

Looks like the problem 'survives'.
---

[choroba]

Looks like two level sort: on the first level, it ignores the _, but if the strings are different only thanks to the underscore, it is used in the second level.

$ echo $'a_2\t2\na2\t1' | sort -k1
a2      1
a_2     2
$ echo $'a_2\t2\na2\t1' | sort -k1,1
a2      1
a_2     2
$ echo $'a2\t2\na_2\t1' | sort -k1,1
a2      2
a_2     1
$ echo $'a2\t2\na_2\t1' | sort -k1
a_2     1
a2      2