With USE="-doc" /usr/share/doc/darktable-1.4.1/TRANSLATORS.bz2 /usr/share/doc/darktable-1.4.1/AUTHORS.bz2 /usr/share/doc/darktable-1.4.1/README.bz2 /usr/share/doc/darktable/darktablerc.html With xsltproc installed from dev-libs/libxslt-1.1.28-r1. Separate install in doc/CMakeLists.txt for darktablerc.html, uses ${SHARE_INSTALL}/doc/darktable/ which doesn't match sed in src_prepare.
Fixed in 1.4.1-r1.