patch 8.2.4841: empty string considered an error for expand() Commit: https://github.com/vim/vim/commit/a96edb736d4274fc4aea460800780e06e1510812 Author: Bram Moolenaar <Bram@vim.org> Date: Thu Apr 28 17:52:24 2022 +0100 patch 8.2.4841: empty string considered an error for expand() Problem: Empty string considered an error for expand() when 'verbose' is set. (Christian Brabandt) Solution: Do not give an error for an empty result. (closes #10307)

/* 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);