run with optional args, e.g., {workflow,pipeline}-*-plugin

find-git-unreleased.sh

#!/bin/bash
# http://stackoverflow.com/a/37730085/12916
if [ $# -ge 1 ]
then
    files="$@"
else
    files=*
fi
for r in $files
do
    echo considering $r
    if [ -f $r/pom.xml ] && egrep -q '<tag>(HEAD|master|[$][{]scmTag[}])</tag>' $r/pom.xml
    then
        cd $r
        echo "====== $r ====="
        git pull --ff-only
        git log --merges $(git log --reverse --ancestry-path --pretty=%H $(git describe --abbrev=0 HEAD)..HEAD | head -1)...HEAD
        cd ..
    fi
done