Strange behavior of git blame '-C' option.

(update1)
'git blame' 's option '-C' works strangely to me, and i'm neither able to find
anything relevent in manpage nor somewhere else.  So, here is just test
results and my speculations, which may be (completely) wrong.

icq through stunnel: enable certificate verification.

Suggested earlier (see This icq..) config for running icq
(pidgin) through stunnel is insecure! Though it provides encryption, it does
not verify certificates, because stunnel's default is 'verify=0'.

So, here is how to fix it, but for debian wheezy.