*** prefix.c.orig	Fri Feb  6 16:04:22 1998
--- prefix.c		Thu Mar 23 15:40:38 2000
***************
*** 232,238 ****
       char *name;
  {
    char code = name[0];
!   char *key, *prefix = 0;
    int keylen;
  
    if (code != '@' && code != '$')
--- 232,238 ----
       char *name;
  {
    char code = name[0];
!   char *key, *prefix = 0, *oldname = name;
    int keylen;
  
    if (code != '@' && code != '$')
***************
*** 272,278 ****
        prefix[strlen (prefix) - 1] = 0;
      }
  
!   return concat (prefix, name, NULL_PTR);
  }
  
  /* Update PATH using KEY if PATH starts with PREFIX.  */
--- 272,283 ----
        prefix[strlen (prefix) - 1] = 0;
      }
  
!   name = concat (prefix, name, NULL_PTR);
! 
!   if (!strcmp (name, oldname))
!     return 0;
! 
!   return name;
  }
  
  /* Update PATH using KEY if PATH starts with PREFIX.  */