This library is a small utility to help you create pattern to handle multiline.
INFO: documentation https://www.elastic.co/guide/en/beats/filebeat/current/multiline-examples.html
# For Linux
make build.linux
# For MacOS
make build.darwinexamples/elastic-1.log provides some stack trace to validate against your pattern
dist/filebeat-helper-linux -logfile examples/elastic-1.log -pattern '^\[\d{4}-\d{2}-\d{2}[^]]*\]' -negate