Comment # 26 on bug 1076779 from Tom���� Chv��tal

arcarius:~ # LC_ALL=C udevadm info -q property -n /dev/sdb2 | sed -n -e
's/\(.*\)=\(.*\)/\1="\2"/p' | grep -E
'^(MD_CONTAINER|ID_PART_ENTRY_(TYPE|SCHEME)|PARTNAME)='
ID_PART_ENTRY_SCHEME="gpt"
ID_PART_ENTRY_TYPE="c12a7328-f81f-11d2-ba4b-00a0c93ec93b"
Binary file (standard input) matches

arcarius:~ # LANG=C udevadm info -q property -n /dev/sdb2 | sed -n -e
's/\(.*\)=\(.*\)/\1="\2"/p' | grep -E
'^(MD_CONTAINER|ID_PART_ENTRY_(TYPE|SCHEME)|PARTNAME)='
ID_PART_ENTRY_SCHEME="gpt"
ID_PART_ENTRY_TYPE="c12a7328-f81f-11d2-ba4b-00a0c93ec93b"
Binary file (standard input) matches

Still sadly looks the same.

Trying the rpm it fails the same too:
arcarius:/home/scarabeus/tmp # os-prober 
/usr/lib/os-probes/mounted/05efi: eval: line 33: syntax error near unexpected
token `('
/usr/lib/os-probes/mounted/05efi: eval: line 33: `Binary file (standard input)
matches'


I guess this has nothing to do with locale in the end but with mess that
windows stored as a name of the /dev/sdb2 partition and that will stay same
regardless of the locale of the checking system.