--- a/bash-completion.sh	Sun Jan 19 18:41:32 2020 +0100
+++ b/bash-completion.sh	Mon Jan 20 12:39:22 2020 +0100
@@ -54,6 +54,7 @@
 	elif [[ "$w1" == "--as"            && "x$w0" == "x" ]];    then COMPREPLY=("''")
 	elif [[ "$w1" == "--option"        && "x$w0" == "x" ]];    then COMPREPLY=("''")
 	elif [[ "$w2" == "--option"        && "x$w0" == "x" ]];    then COMPREPLY=("''")
+	elif [[ "$w1" == "--parallel"      && "x$w0" == "x" ]];    then COMPREPLY=($(nproc --all))
 	elif [[ "$w1" == "--file"                           ]];    then COMPREPLY=($(compgen -W "${FILE_FIELDS[*]}"  -- "$w0"))
 	elif [[ "$w1" == "--xattr"                          ]];    then COMPREPLY=($(compgen -W "${XATTR_FIELDS[*]}" -- "$w0"))
 	elif [[ "$w1" == "--streamlet"                      ]];    then COMPREPLY=($(while read c; do PATH="$RELPIPE_IN_FILESYSTEM_STREAMLET_PATH" type -P "$c" &>/dev/null && echo "$c"; done < <(PATH="$RELPIPE_IN_FILESYSTEM_STREAMLET_PATH" compgen -A command -- "$w0")))
@@ -65,6 +66,7 @@
 			"--streamlet"
 			"--as"
 			"--option"
+			"--parallel"
 		)
 		COMPREPLY=($(compgen -W "${OPTIONS[*]}" -- "$w0"))
 	fi