lyx tarball contains a bash completion snippet that has more features than the one currently included in the bash-completion package. The bash-completion one has been already removed upstream, please consider shipping the one in the lyx tarball instead - just copying lib/scripts/bash_completion to /etc/bash_completion.d/lyx should suffice based on a quick peek (not actually tested).
Thanks for the report Ville. I will add this in release 2.0.5-3. For the moment we have 2.0.5-2 in tests for Fedora 16, 17 and 18.
lyx-2.0.5.1-1.fc18 has been submitted as an update for Fedora 18. https://admin.fedoraproject.org/updates/lyx-2.0.5.1-1.fc18
lyx-2.0.5.1-1.fc17 has been submitted as an update for Fedora 17. https://admin.fedoraproject.org/updates/lyx-2.0.5.1-1.fc17
lyx-2.0.5.1-1.fc16 has been submitted as an update for Fedora 16. https://admin.fedoraproject.org/updates/lyx-2.0.5.1-1.fc16
Package lyx-2.0.5.1-1.fc18: * should fix your issue, * was pushed to the Fedora 18 testing repository, * should be available at your local mirror within two days. Update it with: # su -c 'yum update --enablerepo=updates-testing lyx-2.0.5.1-1.fc18' as soon as you are able to. Please go to the following url: https://admin.fedoraproject.org/updates/FEDORA-2013-0192/lyx-2.0.5.1-1.fc18 then log in and leave karma (feedback).
lyx-2.0.5.1-1.fc16 has been pushed to the Fedora 16 stable repository. If problems still persist, please make note of it in this bug report.
lyx-2.0.5.1-1.fc17 has been pushed to the Fedora 17 stable repository. If problems still persist, please make note of it in this bug report.
lyx-2.0.5.1-1.fc18 has been pushed to the Fedora 18 stable repository. If problems still persist, please make note of it in this bug report.