app-misc/{buku,googler,nnn}: add bash auto-completion scripts

app-misc/googler/googler-9999.ebuild

@@ -2,7 +2,7 @@
 # Distributed under the terms of the GNU General Public License v2
 
 EAPI=6
-inherit autotools git-r3
+inherit autotools git-r3 bash-completion-r1
 
 DESCRIPTION="Google Search, Google Site Search, Google News from the terminal"
 HOMEPAGE="https://github.com/jarun/googler"
@@ -21,3 +21,8 @@ src_prepare() {
 	export PREFIX="/usr"
 	default
 }
+
+src_install() {
+	default
+	newbashcomp auto-completion/bash/${PN}-completion.bash ${PN}
+}