diff -r 0d362165241e -r ded44e94147c bash-completion.sh
--- a/bash-completion.sh	Tue Oct 06 16:24:18 2020 +0200
+++ b/bash-completion.sh	Tue Oct 06 16:55:22 2020 +0200
@@ -13,6 +13,24 @@
 # You should have received a copy of the GNU General Public License
 # along with this program. If not, see <http://www.gnu.org/licenses/>.
 
+_relpipe_in_jack_completion_ports() {
+	# TODO: simpler and faster implementation in relpipe-out-jack or relpipe-in-jack C++ code
+	jack_lsp -tp 2>/dev/null \
+		| tr -d \\t \
+		| tr \\n \\0 \
+		| relpipe-in-cli \
+			--relation "jack_midi_port" \
+			--attribute "name" string \
+			--attribute "properties" string \
+			--attribute "type" string \
+			--records-on-stdin true \
+		| relpipe-tr-grep '.*' 'properties' 'output' \
+		| relpipe-tr-grep '.*' 'type' 'midi' \
+		| relpipe-tr-cut '.*' 'name' \
+		| relpipe-out-nullbyte \
+		| tr \\0 \\n
+}
+
 _relpipe_in_jack_completion() {
 	local w0 w1 w2 w3
 
@@ -22,16 +40,14 @@
 	w2=${COMP_WORDS[COMP_CWORD-2]}
 	w3=${COMP_WORDS[COMP_CWORD-3]}
 
-	BOOLEAN=(
-		"true"
-		"false"
-	)
-
-	if   [[ "$w1" == "--TODO"                                          ]];    then COMPREPLY=($(compgen -W "${BOOLEAN[*]}" -- "$w0"))
-	elif [[ "$w1" == "--jack-client-name"             && "x$w0" == "x" ]];    then COMPREPLY=("'relpipe-in-jack'")
+	  if [[ "$w1" == "--jack-client-name"             && "x$w0" == "x" ]];    then COMPREPLY=("'relpipe-in-jack'")
+	elif [[ "$w1" == "--jack-connect-to-port"                          ]];    then COMPREPLY=($(compgen -W "$(_relpipe_in_jack_completion_ports)" -- "$w0"))
+	elif [[ "$w1" == "--required-jack-connections"    && "x$w0" == "x" ]];    then COMPREPLY=("0")
 	else
 		OPTIONS=(
 			"--jack-client-name"
+			"--jack-connect-to-port"
+			"--required-jack-connections"
 		)
 		COMPREPLY=($(compgen -W "${OPTIONS[*]}" -- "$w0"))
 	fi