bug#9418: case sensitivity buggy in sort

[Michał Janke]

sort (GNU coreutils) 8.12

The case-sensitivity looks buggy in sort. Have a look at these examples:

$ cat bbb
A B b 0
a B b 0
A b b 1

$ sort bbb
a B b 0
A B b 0
A b b 1

$ sort -k1,2 bbb
a B b 0
A b b 1
A B b 0


$ cat ccc
A 2 b 0
a 2 b 0
A 1 b 1

$ sort ccc
A 1 b 1
a 2 b 0
A 2 b 0

$ sort -k1 ccc
A 1 b 1
a 2 b 0
A 2 b 0

$ sort -k1,2 ccc
A 1 b 1
a 2 b 0
A 2 b 0

$ sort -k1,1 ccc
a 2 b 0
A 1 b 1
A 2 b 0


$ cat ddd
A2 b 0
a2 b 0
A1 b 1

$ sort ddd
A1 b 1
a2 b 0
A2 b 0

$ sort -k1 ddd
A1 b 1
a2 b 0
A2 b 0

$ sort -k1,1 ddd
A1 b 1
a2 b 0
A2 b 0

$ sort -k1,2 ddd
A1 b 1
a2 b 0
A2 b 0

$ sort -k1,3 ddd
A1 b 1
a2 b 0
A2 b 0