patch 8.2.0774: t_TI and t_TE are output when using 'visualbell' Commit: https://github.com/vim/vim/commit/26e86445bf06ab7e7587dfdf75f33f7c70632b46 Author: Bram Moolenaar <Bram@vim.org> Date: Sun May 17 14:06:16 2020 +0200 patch 8.2.0774: t_TI and t_TE are output when using 'visualbell' Problem: t_TI and t_TE are output when using 'visualbell'. (Dominique Pelle) Solution: Do not change the terminal mode for a short sleep. Do not output t_TI and t_TE when switching to/from TMODE_SLEEP. Make tmode an enum.

/* 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);