This was originally filed in GNU Classpath's BTS, but it should probably be here as well.
Ziga Mahkovec wrote there (https://savannah.gnu.org/bugs/index.php?func=detailitem&item_id=12307): We were recently having some problems with the search functionality in native eclipse[1]. It boiled down to the lack of quoting regex constructs support in gnu.regexp.RE (\Q, \E). A simple test: Pattern.compile("\\Q" + "boo" + "\\E").matcher("Peekaboo").find(); returns false using classpath and true using java-sun. I'm attaching a more comprehensive Mauve test for the java.util.regex functionality. It consists of three test suites, adapted from PCRE[2] (which is BSD licensed): - testdata1: tests that are currently passed by classpath - testdata2: tests that currently fail (disabled since they probably need to be reviewed) - testdata3: tests that use quoting constructs I'm also attaching a tentative patch for the quoting constructs problem. [1] https://bugzilla.redhat.com/beta/show_bug.cgi?id=149927 [2] http://www.pcre.org/ -- Summary: java.util.regex implementation doesn't support quoting constructs Product: gcc Version: 4.0.0 Status: UNCONFIRMED Severity: normal Priority: P2 Component: libgcj AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: overholt at redhat dot com CC: gcc-bugs at gcc dot gnu dot org,java-prs at gcc dot gnu dot org http://gcc.gnu.org/bugzilla/show_bug.cgi?id=20504