Interpret :/<pattern> as a regular expression
Earlier, Git interpreted the pattern as a strict prefix, which made
the operator unsuited in many cases.
Now, the pattern is interpreted as a regular expression, on the whole
message, so that you can say
git diff :/.*^Signed-off-by:.Zack.Brown
to see the diff against the most recent reachable commit which was
signed off by Zack, whose Kernel Cousin I miss very much.
If you want to match just the oneline, but with a regular expression,
say something like
git diff ':/[^
]*intelligent'
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>