1. Summarise the issue (what were doing, what went wrong?)
I added the line "obliterate output-auto-name" to my ~/.darcs/defaults.
Then I get
> darcs obliterate
darcs: Bad default option: command 'obliterate' has no option
But 'darcs obliterate' has this option:
> darcs obliterate --output-auto-name
Thu Mar 14 12:49:57 CET 2013 firstname.lastname@example.org
Shall I obliterate this patch? (1/11) [ynW...], or ? for more options: d
No patches selected!
3. What darcs version are you using? (Try: darcs --exact-version)
4. What operating system are you running?
Linux aragon 2.6.18-6-686 #1 SMP Fri Feb 19 23:40:03 UTC 2010 i686 GNU/Linux