taglinefilesource code
escape507drivers/net/ppp.cppp->escape = 0;
escape716drivers/net/ppp.cppp->escape = 0;  /* No pending escape character */
escape1183drivers/net/ppp.cppp->escape = PPP_TRANS;
escape1192drivers/net/ppp.cif (ppp->escape)
escape1207drivers/net/ppp.cppp->escape = 0;
escape1221drivers/net/ppp.cchr ^= ppp->escape;
escape1222drivers/net/ppp.cppp->escape = 0;
escape97include/linux/if_pppvar.hchar    escape;    /* 0x20 if prev char was PPP_ESC*/