feat(tokio-console): add fallback 3rd party completion loader

Author: scop

completions/Makefile.am

@@ -428,6 +428,7 @@ bashcomp_DATA = 2to3 \
 		tcpnice \
 		timeout \
 		tipc \
+		_tokio-console \
 		tox \
 		tracepath \
 		tree \

completions/_tokio-console

@@ -0,0 +1,8 @@
+# 3rd party completion loader for commands emitting        -*- shell-script -*-
+# their completion using "$cmd gen-completion bash".
+#
+# This serves as a fallback in case the completion is not installed otherwise.
+
+eval -- "$("$1" gen-completion bash 2>/dev/null)"
+
+# ex: filetype=sh

test/fallback/completions/Makefile.am

@@ -36,6 +36,7 @@ EXTRA_DIST = \
 	svn \
 	svnadmin \
 	svnlook \
+	tokio-console \
 	udevadm \
 	umount \
 	umount.linux \

test/fallback/completions/tokio-console

@@ -0,0 +1 @@
+../../../completions/_tokio-console