--- a/bash-completion.sh	Sat Nov 21 20:09:18 2020 +0100
+++ b/bash-completion.sh	Sun Nov 22 00:44:00 2020 +0100
@@ -22,10 +22,25 @@
 	w2=${COMP_WORDS[COMP_CWORD-2]}
 	w3=${COMP_WORDS[COMP_CWORD-3]}
 
+	BOOLEAN_VALUES=(
+		"true"
+		"false"
+	)
+
 	if   [[ "$w1" == "--relation"                      && "x$w0" == "x" ]];    then COMPREPLY=("''")
+	elif [[ "$w1" == "--enable-sections"                                ]];    then COMPREPLY=($(compgen -W "${BOOLEAN_VALUES[*]}" -- "$w0"))
+	elif [[ "$w1" == "--enable-subkeys"                                 ]];    then COMPREPLY=($(compgen -W "${BOOLEAN_VALUES[*]}" -- "$w0"))
+	elif [[ "$w1" == "--enable-comments"                                ]];    then COMPREPLY=($(compgen -W "${BOOLEAN_VALUES[*]}" -- "$w0"))
+	elif [[ "$w1" == "--enable-line-numbers"                            ]];    then COMPREPLY=($(compgen -W "${BOOLEAN_VALUES[*]}" -- "$w0"))
+	elif [[ "$w1" == "--enable-event-numbers"                           ]];    then COMPREPLY=($(compgen -W "${BOOLEAN_VALUES[*]}" -- "$w0"))
 	else
 		OPTIONS=(
 			"--relation"
+			"--enable-sections"
+			"--enable-subkeys"
+			"--enable-comments"
+			"--enable-line-numbers"
+			"--enable-event-numbers"
 		)
 		COMPREPLY=($(compgen -W "${OPTIONS[*]}" -- "$w0"))
 	fi