ebuild_hook() {
	if ehook_use libreoffice_theme; then

	## Add Human icon theme.
	mv "${WORKDIR}"/human icon-themes

	## Add custom icons.
	cp "${EHOOK_FILESDIR}"/custom-icons/savemodified_{large,small}.png icon-themes/human/res

	## Add Tango icon theme.
	mv "${WORKDIR}"/tango icon-themes

	## Configure with Human icon theme.
	sed -i \
		-e "/with_theme=/{s/\(elementary\)/\1 human tango/}" \
		-e "/|sukapura_svg)/{s/\(elementary\)/\1|human|tango/}" \
		configure.ac || die

	## Make Human icon theme the default.
	sed -i \
		-e "/r = /{s/elementary/human/}" \
		vcl/source/app/IconThemeSelector.cxx || die

	## Use Tango icon theme as the fallback for Human icon theme.
	sed -i \
		-e "s/\(sResult = \"\";\)/\1\nelse if (rsStyle == \"human\")\nsResult = \"tango\";/" \
		vcl/source/image/ImplImageTree.cxx || die

	fi ## end of ehook_use libreoffice_theme
}