On Thu, 25 Mar 2010 13:19:29 +0300, Sergei Shtylyov said:

>    I'd disagree in this case. Anybody will hardly grep for "mask: 
> %s%s%s%s%s%sflags: %s%s%s%s%s%s".

However,  egrep 'mask: .*flags: ' is quite plausible.