patch 9.0.1297: wrong value for $LC_CTYPE makes the environ test fail Commit: https://github.com/vim/vim/commit/962d91643520ec3748fcf5af3263d89ccfcdda92 Author: WuerfelDev <dev@wuerfeldev.de> Date: Fri Feb 10 20:49:08 2023 +0000 patch 9.0.1297: wrong value for $LC_CTYPE makes the environ test fail Problem: Wrong value for $LC_CTYPE makes the environ test fail. Solution: Unset $LC_CTYPE when running tests. (closes https://github.com/vim/vim/issues/11963)

/* 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);