Git plugin to list svn authors. Place in your path and chmod a+x it. Will output to the console.

git-svnauthors

#!/bin/bash

usage() {
    echo "$0 usage:"
    echo "   $0 repo-url"

    exit 1
}

if [ -z "$1" ]; then
    usage
fi

repourl=$1

svn log "$repourl" -q | awk -F '|' '/^r/ {sub("^ ", "", $2); sub(" $", "", $2); print $2" = "$2"<"$2">"}' | sort -u

exit 0