[patch] attempted patch, worked for me

libreoffice_bashcompletion_fail.patch (text/plain), 616 bytes, created by im out(email deleted) on 2016-03-01 16:30:35 UTC

--- orig/usr/portage/app-office/libreoffice/libreoffice-9999.ebuild	2016-03-01 15:47:29.283617208 +0100
+++ patched/usr/portage/app-office/libreoffice/libreoffice-9999.ebuild	2016-03-01 15:48:11.120091252 +0100
@@ -529,7 +529,7 @@ src_install() {
 	make DESTDIR="${D}" distro-pack-install -o build -o check || die
 
 	# Fix bash completion placement
-	newbashcomp "${ED}"etc/bash_completion.d/libreoffice.sh ${PN}
+	newbashcomp "${ED}"usr/share/bash-completion/completions/libreoffice.sh ${PN}
 	bashcomp_alias \
 		libreoffice \
 		unopkg loimpress lobase localc lodraw lomath lowriter lofromtemplate loweb loffice