Exported nonl-chars to rx-syntax to fix (rx nonl).

scsh/rx/packages.scm

@@ -225,6 +225,7 @@
 					      parse-sre parse-sres
 					      regexp->scheme
 					      static-regexp?))
+		    (standard-char-sets (export nonl-chars word-chars))
 		    (sre-internal-syntax-tools (export expand-rx)))
   (open scsh-utilities
 	defrec-package
@@ -294,6 +295,7 @@
   (open re-level-0
 	char-set-lib
 	rx-lib
+	standard-char-sets
 	scheme)
   (for-syntax (open sre-internal-syntax-tools scheme))
   (begin (define-syntax rx expand-rx))