The following ebuilds (from a scan over /usr/share/doc) install gzipped HTML files. This is annoying since it breaks links. media-libs/libungif-4.1.0 media-libs/imlib-1.9.10-r3 sys-libs/ncurses-5.2-r3 sys-devel/gcc-2.95.3-r5 net-print/cups-1.1.14 sys-libs/db-3.2.3h-r4 dev-libs/openssl-0.9.6c sys-libs/readline-4.1-r3 sys-devel/m4-1.4o-r2 sys-apps/raidtools-0.90-r2 sys-libs/pam-0.75-r1 app-shells/tcsh-6.10-r2 media-libs/tiff-3.5.7 kde-base/kdelibs-2.2.2-r2 dev-lang/nasm-0.98-r3 x11-libs/gtk+-1.2.10-r4 media-libs/libogg-1.0_rc3 media-libs/libvorbis-1.0_rc3 net-libs/libwww-5.3.2-r1 dev-lang/icon-9.40 dev-libs/glib-1.2.10-r2 net-www/lynx-2.8.4a-r2 app-text/openjade-1.3-r2 media-sound/esound-0.2.23 media-libs/giflib-4.1.0-r3 app-crypt/gnupg-1.0.6 sys-libs/slang-1.4.5 gnome-base/libghttp-1.0.9-r1 dev-libs/gmp-3.1.1-r1 sys-apps/bzip2-1.0.2 sys-devel/perl-5.6.1-r3 dev-java/blackdown-jdk-1.3.1-r2 app-text/ghostscript-6.50-r4
media-libs/libungif-4.1.0 media-libs/imlib-1.9.10-r3 sys-libs/ncurses-5.2-r3 are done. Thanks for catching this!
sys-devel/gcc-2.95.3-r5 x11-libs/gtk+-1.2.10-r4 sys-libs/slang-1.4.5 done
sys-libs/readline-4.1 sys-libs/pam-0.75-r4 already fixed this sys-devel/perl-5 sys-devel/m4-1.4o-r2 already fixed this sys-libs/db-3.2.3 sys-apps/raidtools sys-apps/bzip2 app-shells/tcsh media-libs/tiff kde-base/kdelibs-2.2.2 dev-lang/nasm media-libs/libogg media-libs/libvorbis net-libs/libwww net-www/lynx gnome-base/libghttp media-sound/esound-0.2.24 fixed it already
app-text/openjade-1.3 app-text/ghostscript-6.53-r1 had this fix already app-crypt/gnupg-1.0.6 had this fix already dev-java/blackdown-jdk-1.3.1-r3 media-libs/giflib-4.1.0-r3 net-print/cups-1.1.14-r1 has this fixed already dev-libs/openssl-0.9.6c fixed, but now I am searching for all possible packages :) Thanks for the catch!