patch 8.0.0205: wrong behavior after :undojoin commit https://github.com/vim/vim/commit/5e4e1b12998b1ed99138cad1c5da4d430f798547 Author: Bram Moolenaar <Bram@vim.org> Date: Tue Jan 17 22:09:45 2017 +0100 patch 8.0.0205: wrong behavior after :undojoin Problem: After :undojoin some commands don't work properly, such as :redo. (Matthew Malcomson) Solution: Don't set curbuf->b_u_curhead. (closes #1390)

/* 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);