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      Delete-file$

      Delete a file

      This analogue of the Common Lisp function, delete-file, uses that function under the hood to delete a given file. It returns (mv t state) if deletion succeeds and (mv nil state) otherwise. The guard of delete-file$ requires that the first argument is a string; the second argument is the ACL2 state. The logical definition does not actually look at the file and hence is not useful for reasoning.

      Function: delete-file$

      (defun delete-file$ (file state)
        (declare (xargs :guard (stringp file)
                        :stobjs state))
        (declare (ignore file))
        (mv-let (erp val state)
                (read-acl2-oracle state)
          (declare (ignore val))
          (mv (null erp) state)))