How to filter Subversion logs by date and author

I keep forgetting this snippet, and then spend hours re-discovering/re-inventing it. So for the record: Here’s a bit of magic to let you filter your Subversion (SVN) logs by date and author:

svn log -vr {20091014}:"HEAD" | sed -n "/nealenssle/,/-----$/ p"

I use it in a bash shell script function that I’ve got in my .bash_profile script like so:

function svnlog {
    svn log -vr {$1}:"HEAD" | sed -n "/$2/,/-----$/ p"
}

And then call it like so:

svnlog 20091014 nealenssle

Happy spelunking!