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Hi Richard 🙂 We use https://pkg.go.dev/github.com/vjeantet/grok to implement the grok parser. You are right, it doesn't seem to support regex capture formats within the grok pattern. Let me know if you have a work around for your needs, else we will try and figure something out

I've got it working using

%{DATA}

so this is more docs / backlog. Thx