Would like to have the line number for log item values. This can help when log files are very big and have multiple lines matching the alert.

It can also help identify cases where the agent disconnected and is sending out old alerts upon reconnecting. Making it available as a macro would be nice.

Maybe extending the log[] item type to have an extra field?
Would need to work independently of logfile date and time fields though, since some logsfiles have multi-line records that only include a datestamp on the first line of each record.