commit https://github.com/vim/vim/commit/12c4492dd35e0cd83c8816be2ec849b836109882 Author: Bram Moolenaar <Bram@vim.org> Date: Sun Jan 8 13:26:03 2017 +0100 patch 8.0.0151: passing buffer content to system() is clumsy Problem: To pass buffer content to system() and systemlist() one has to first create a string or list. Solution: Allow passing a buffer number. (LemonBoy, closes #1240)

/* if_python3.c */
int python3_enabled(int verbose);
void python3_end(void);
int python3_loaded(void);
void ex_py3(exarg_T *eap);
void ex_py3file(exarg_T *eap);
void ex_py3do(exarg_T *eap);
void python3_buffer_free(buf_T *buf);
void python3_window_free(win_T *win);
void python3_tabpage_free(tabpage_T *tab);
void do_py3eval(char_u *str, typval_T *rettv);
int set_ref_in_python3(int copyID);
/* vim: set ft=c : */