When such a regex-match expression appears at top-level e.g. | between two bars |, then named capturing groups also cause new fields to be added to the output event as for the regex() function.

Improve syntax highlighting in search field

Performance has improved for most usages of regex (we have moved to use RE2/J rather than Java's java.util.regex.)

A bug has been fixed where searching for unicode characters could cause false positives.

New syntax field = /regex/idmg syntax for matching. Optional flags i=ignore case, m=multiline (change semantics of $ and ^ to match each line, nut just start/end), d=dotall (. includes \n), and g=same as repeat=true for the regex() function. I.e. to case-insensitively find all log lines containing err (or ERR, or Err) you can now search /err/i

When no field is named, i.e. as in /err/i, then @rawstring is being searched.