add_on_mod only uses first path if more than one specified

[hrpatel]

Command:

add_on_mod "build_docs" "/app/api" "/app/guide" "/app/sysadmin" &

Expected behaviour:

• Setup watches on 3 paths

Actual behaviour:

• Watch is only established on /app/api

Workaround:

add_on_mod "build_docs" "/app/api" &
add_on_mod "build_docs" "/app/guide" &
add_on_mod "build_docs" "/app/sysadmin" &

This bug prevents us from doing something like this:

paths=$(find /some_path ! -name dont_watch_me -depth 1 -type d)
add_on_mod "callback" "${paths}" &