commit https://github.com/vim/vim/commit/b62cc36a600e2e1e5a1d1d484fef89898c847c4c Author: Bram Moolenaar <Bram@vim.org> Date: Sat Sep 3 16:43:53 2016 +0200 patch 7.4.2313 Problem: Crash when deleting an augroup and listing an autocommand. (Dominique Pelle) Solution: Make sure deleted_augroup is valid.

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