524   FILE *f;  member
537   if (feof(lf->f)) return NULL;  in getF()
538   *size = fread(lf->buff, 1, sizeof(lf->buff), lf->f);  in getF()
560     lf.f = stdin;  in luaL_loadfile()
564     lf.f = fopen(filename, "r");  in luaL_loadfile()
565     if (lf.f == NULL) return errfile(L, "open", fnameindex);  in luaL_loadfile()
567   c = getc(lf.f);  in luaL_loadfile()
570     while ((c = getc(lf.f)) != EOF && c != '\n') ;  /* skip first line */  in luaL_loadfile()
571     if (c == '\n') c = getc(lf.f);  in luaL_loadfile()
574     lf.f = freopen(filename, "rb", lf.f);  /* reopen in binary mode */  in luaL_loadfile()
575     if (lf.f == NULL) return errfile(L, "reopen", fnameindex);  in luaL_loadfile()
577    while ((c = getc(lf.f)) != EOF && c != LUA_SIGNATURE[0]) ;  in luaL_loadfile()
580   ungetc(c, lf.f);  in luaL_loadfile()
582   readstatus = ferror(lf.f);  in luaL_loadfile()
583   if (filename) fclose(lf.f);  /* close file (even in case of errors) */  in luaL_loadfile()