537   char *regexp = NULL;  in main()  local
588 	  regexp = optarg;  in main()
729   if (regexp == NULL)  in main()
733       regexp = argv[optind++];  in main()
743       char *next_pos = regexp;  in main()
748       next_pos = regexp;  in main()
759       len = strlen(regexp);  in main()
767       next_pos = regexp;  in main()
790       regexp = new_re;  in main()
797       char *tmp = regexp;  in main()
799       regexp = malloc(len + 7);  in main()
800       if (regexp == NULL)  in main()
805       strcpy(regexp, "\\<(");  in main()
806       strcpy(regexp + 3, tmp);  in main()
807       strcpy(regexp + len + 3, ")\\>");  in main()
811   errcode = tre_regcomp(&preg, regexp, comp_flags);  in main()