git filter-branch to rewrite asylum history to prepend "ASYLUM: " to all entries that need it

gistfile1.txt

git filter-branch -f --msg-filter '
  i=0
  while read line
  do
    if [ $i -eq 0 ];
    then    
      if expr "$line" : ".*ASYLUM:.*" > /dev/null;
      then
         echo "$line"
      else
        echo "$line" | sed "s/^/ASYLUM: /g"
      fi 
    else
      echo "$line"
    fi
    
    i=1
  done ' f5b266b~1..HEAD

// how to remove myself as the committer
git filter-branch -f --commit-filter '
if [ "$GIT_COMMITTER_NAME" = "Alex Bevilacqua" ];
then
GIT_COMMITTER_NAME="$GIT_AUTHOR_NAME";
GIT_COMMITTER_EMAIL="$GIT_AUTHOR_EMAIL";
git commit-tree "$@";
else
git commit-tree "$@";
fi' f5b266b~..HEAD