I can confirm that this problem is still present in Stretch 9.0. Starting from a Debian LiveCD image (9.0.1 Debian Mate), and using "apt-get install xpdf" to install xpdf, and then entering "xpdf <filename>" yields a long list of Config Errors on the xterm console ... of the form:
Config Error: Unknown config file command 'fontFileCC' (/usr/share/xpdf/xpdfrc-korean:6) Config Error: Some work needs to be done to support this option in the Poppler version of xpdf The suggested Workaround of adding "include /etc/xpdf/includes" is not helpful as this line is already at the end of the /etc/xpdf/xpdfrc file in the stock Debian Stretch release :( Additional suggestions appreciated - thanks !
