[NEW] dynamic_main: New dynamic main/argv helper!

See t/dynamic_main.bash for an early example of how to use it.

dynamic_main.bash

@@ -0,0 +1,18 @@
+command -v dedcat || \
+	source "$(dirname ${BASH_SOURCE[0]})/logging.bash"
+
+[ -z "${fns[@]}" ] && dedcat 'ERROR: Empty or undefined ${fns[@]} array!'
+
+read -d '' HELPSTR <<EOH
+Usage:  $0 OPERATION
+$EXTRA_NOTE
+Operations:
+$(for fn in ${fns[@]}; do echo "  $fn:  $($fn help)"; done)
+EOH
+
+[[ " ${fns[*]} " =~ [[:space:]]${1}[[:space:]] ]] \
+	|| dedcat "$HELPSTR"
+
+op="$1"
+shift
+$op $@