updated for version 7.4.399 Problem: Encryption implementation is messy. Blowfish encryption has a weakness. Solution: Refactor the encryption, store the state in an allocated struct instead of using a save/restore mechanism. Introduce the "blowfish2" method, which does not have the weakness and encrypts the whole undo file. (largely by David Leadbeater)

/* auto/if_perl.c */
int perl_enabled __ARGS((int verbose));
void perl_end __ARGS((void));
void msg_split __ARGS((char_u *s, int attr));
void perl_win_free __ARGS((win_T *wp));
void perl_buf_free __ARGS((buf_T *bp));
void ex_perl __ARGS((exarg_T *eap));
void ex_perldo __ARGS((exarg_T *eap));