feat(mdbook): add fallback 3rd party completion loader

scop · scop · commit f695c54d5521 · 2023-05-06T14:24:41.000+03:00
diff --git a/completions/Makefile.am b/completions/Makefile.am
@@ -253,6 +253,7 @@ bashcomp_DATA = 2to3 \
 		mc \
 		mcrypt \
 		mdadm \
+		_mdbook \
 		mdtool \
 		medusa \
 		mii-diag \
diff --git a/completions/_mdbook b/completions/_mdbook
@@ -0,0 +1,8 @@
+# 3rd party completion loader for commands emitting        -*- shell-script -*-
+# their completion using "$cmd completions bash".
+#
+# This serves as a fallback in case the completion is not installed otherwise.
+
+eval -- "$("$1" completions bash 2>/dev/null)"
+
+# ex: filetype=sh
diff --git a/test/fallback/completions/Makefile.am b/test/fallback/completions/Makefile.am
@@ -14,6 +14,7 @@ EXTRA_DIST = \
 	hwclock \
 	ionice \
 	look \
+	mdbook \
 	mock \
 	modules \
 	mount \
diff --git a/test/fallback/completions/mdbook b/test/fallback/completions/mdbook
@@ -0,0 +1 @@
+../../../completions/_mdbook
