changed-mvn-modules

#!/bin/sh

find_in_ancestor() {
    dir="$2"
    while [ -n "$dir" ] && [ ! -f "$dir/$1" ]; do
        dir=${dir%/*}
    done
    if [ -f "$dir/$1" ]; then
        printf '%s\n' "$dir"
    fi
}

BRANCH=${1:-master}
MODULES=$(git diff --merge-base "$BRANCH" --name-only | \
  while read -r file
  do
      find_in_ancestor pom.xml "$file"
  done | \
  sort -u | \
  tr '\n' ',')

echo -am -pl "$MODULES"