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(defun c:xdtb_plreselfcross (/ ss) (if (setq ss (xdrx-ssget (xdrx-string-multilanguage "\n选择要处理的多段线<退出>:" "\nSelect polylines to process <Exit>:" ) '((0 . "*polyline")) ) ) (progn (xdrx-polyline-removeselfcrossing ss) ) ) (princ))