The xpdf-4.0 has a number of issues with the xpdfrc file: 1. /etc/xpdfrc does not seem to be searched by xpdf. I used strace to look for paths it is looking and the closest one was /etc/xdg directory. Putting the xpdfrc in /etc/xdg results in the reading of the file but gives error messages for every uncommented line saying "="is missing. Putting the same file into $HOME/.xpdfrc results in reading and no error!! 2. The urlCommand was giving an error in reading the xpdfrc file. I found this in the blog: "Xpdf 4 no longer uses the "urlCommand" setting in xpdfrc. Instead it uses Qt's builtin URL handling, i.e., it calls QDesktopServices::openUrl()." FYI
xpdf-4.00-4.fc27 has been submitted as an update to Fedora 27. https://bodhi.fedoraproject.org/updates/FEDORA-2017-ed036f463b
xpdf-4.00-4.fc27 has been pushed to the Fedora 27 testing repository. If problems still persist, please make note of it in this bug report. See https://fedoraproject.org/wiki/QA:Updates_Testing for instructions on how to install test updates. You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2017-ed036f463b
xpdf-4.00-5.fc27 has been submitted as an update to Fedora 27. https://bodhi.fedoraproject.org/updates/FEDORA-2017-ee72c8b824
xpdf-4.00-5.fc27 has been pushed to the Fedora 27 testing repository. If problems still persist, please make note of it in this bug report. See https://fedoraproject.org/wiki/QA:Updates_Testing for instructions on how to install test updates. You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2017-ee72c8b824
xpdf-4.00-5.fc27 has been pushed to the Fedora 27 stable repository. If problems still persist, please make note of it in this bug report.