🔨 Add 'opt_find' to find matching options

buildroot/bin/opt_find

@@ -0,0 +1,33 @@
+#!/usr/bin/env bash
+#
+# opt_find
+# Find one or more Marlin options - Configuration lines starting with #define
+#
+
+MYNAME=$(basename $0)
+
+[[ $# == 0 ]] && ONE="-h" || ONE=$1
+
+COMM="(//\\s*)?" ; TYPE=""
+case "$ONE" in
+  -d|--disabled )
+      shift ; COMM="(//\\s*)" ; TYPE="disabled " ;;
+  -e|--enabled )
+      shift ; COMM="" ; TYPE="enabled " ;;
+  -h|--help )
+      echo "$MYNAME [-d|--disabled|-e|--enabled] STRING ... Find matching Marlin configuration options."
+      echo ; shift ;;
+  -* )
+      echo "Unknown option $ONE" ; shift ;;
+esac
+
+while [[ $# > 0 ]]; do
+  DID=0
+  for FN in Configuration Configuration_adv; do
+    FOUND=$( grep -HEn "^\s*${COMM}#define\s+[A-Z0-9_]*${1}" "Marlin/$FN.h" 2>/dev/null )
+    [[ -n "$FOUND" ]] && { echo "$FOUND" ; DID=1 ; }
+  done
+  ((DID)) || { echo "ERROR: ${MYNAME} - No ${TYPE}match for ${1}" ; exit 9; }
+  shift
+  echo
+done