Is it possible to have regular expression strings spanning multiple lines?

[andarotajo]

Question

I'm trying to create a filter and while I think I got the filter itself down, I'm currently trying to make the YAML cleaner by avoiding super long lines.

In this case it's my regex string that gets too long for my taste. The filter itself is valid but I think the regex includes some whitespace or newline because a appname with the value containerd doesn't match. You can check it at this playground. Try changing the appname to systemd for example and it returns true

Is it possible to have multiline regular expression strings?

Vector Config

transforms:
  home_assistant_filter:
    type: "filter"

    inputs:
      - "home_assistant_logs"

    condition: |-
      # Field .appname is apparently not a string
      appname = string(.appname) ?? "unknown"

      # Filter out all unwanted logs
      is_app = starts_with(appname, "addon")
      is_ignored = match(appname, r'(?:hassio_dns|systemd|dockerd|\
        containerd|kernel|NetworkManager|audit|zigbee2mqtt)$')

      !is_ignored && (!is_app || ends_with(appname, "git_pull"))

Vector Logs

No response