Comment 14 for bug 60286

Feisty *is* affected. Looking at the source for backupninja 0.9.4-6ubuntu1 (the version in Feisty):

$ grep '\[:' backupninja-0.9.4/src/backupninja.in
 echo "$1" | tr [:upper:] [:lower:]
 echo "$1" | tr -d [:alpha:]

The [:expressions:] should be single-quoted; the bug is present in this version, and can cause data loss, as explained in the SRU request above. This can be fixed by backporting the version from Gutsy (0.9.4-6ubuntu2) to Feisty, or by applying the attached debdiff.