patch 8.0.0645: no error for illegal back reference in NFA engine commit https://github.com/vim/vim/commit/1ef9bbe215e13a273e74fccaddd8fc5a42c76b6e Author: Bram Moolenaar <Bram@vim.org> Date: Sat Jun 17 20:08:20 2017 +0200 patch 8.0.0645: no error for illegal back reference in NFA engine Problem: The new regexp engine does not give an error for using a back reference where it is not allowed. (Dominique Pelle) Solution: Check the back reference like the old engine. (closes #1774)

/* farsi.c */
int fkmap(int c);
char_u *lrswap(char_u *ibuf);
char_u *lrFswap(char_u *cmdbuf, int len);
char_u *lrF_sub(char_u *ibuf);
int cmdl_fkmap(int c);
int F_isalpha(int c);
int F_isdigit(int c);
int F_ischar(int c);
void farsi_f8(cmdarg_T *cap);
void farsi_f9(cmdarg_T *cap);
/* vim: set ft=c : */