This is slightly munged jstack output from a .find()
of a Java regular expression that looks like some initial stuff some stuff (\d+) some more stuff (foo|bar) some more sstuff (\d+)
being matched against a logfile line of around 100 characters.
"main" prio=10 tid=0x0000000000f31800 nid=0x523e runnable [0x00007f7ece452000]
java.lang.Thread.State: RUNNABLE
at java.util.regex.Pattern$Curly.match(Pattern.java:3761)
at java.util.regex.Pattern$GroupHead.match(Pattern.java:4185)
at java.util.regex.Pattern$Slice.match(Pattern.java:3499)
at java.util.regex.Pattern$GroupTail.match(Pattern.java:4244)
at java.util.regex.Pattern$BranchConn.match(Pattern.java:4095)
at java.util.regex.Pattern$Slice.match(Pattern.java:3499)