A <match> element is used within a <resultsblock> element to process lines of output. The <match> element takes a pattern attribute that defines matching lines. The pattern is a Perl regular expression.
The match pattern can include parenthetical expressions, which are stored in the variables $1...$n.
<match pattern="^Change (\d+) on (.*?) (.*?) by (.*?)@(.*?) '(.*?)'$">
The <match> element uses <bom> and <field> as subelements. See resultsblock for a more extensive example.