This should match: /\w+\x{C4}/8BZT1 a\x{C4}\x{C4} But it does not because a some tests in non-unicode mode checks only for characters with ordinal numbers 0-127 instead of 0-255. This is fixed in upstream commit: r962 | ph10 | 2012-04-20 19:28:23 +0200 (Pá, 20 dub 2012) | 3 lines Fix auto-possessifying bugs when PCRE_UCP is not set, but character tables specify characters in the range 127-255 are letters, spaces, etc. All Fedoras affected.
Fixed as pcre-8.30-5.fc18 in F18.
pcre-8.21-5.fc17 has been submitted as an update for Fedora 17. https://admin.fedoraproject.org/updates/pcre-8.21-5.fc17
pcre-8.12-9.fc16 has been submitted as an update for Fedora 16. https://admin.fedoraproject.org/updates/pcre-8.12-9.fc16
pcre-8.12-8.fc15 has been submitted as an update for Fedora 15. https://admin.fedoraproject.org/updates/pcre-8.12-8.fc15
Package pcre-8.21-5.fc17: * should fix your issue, * was pushed to the Fedora 17 testing repository, * should be available at your local mirror within two days. Update it with: # su -c 'yum update --enablerepo=updates-testing pcre-8.21-5.fc17' as soon as you are able to. Please go to the following url: https://admin.fedoraproject.org/updates/FEDORA-2012-6453/pcre-8.21-5.fc17 then log in and leave karma (feedback).
pcre-8.12-9.fc16 has been pushed to the Fedora 16 stable repository. If problems still persist, please make note of it in this bug report.
pcre-8.12-8.fc15 has been pushed to the Fedora 15 stable repository. If problems still persist, please make note of it in this bug report.
pcre-8.21-5.fc17 has been pushed to the Fedora 17 stable repository. If problems still persist, please make note of it in this bug report.