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)

/* json.c */
char_u *json_encode(typval_T *val, int options);
char_u *json_encode_nr_expr(int nr, typval_T *val, int options);
int json_decode_all(js_read_T *reader, typval_T *res, int options);
int json_decode(js_read_T *reader, typval_T *res, int options);
int json_find_end(js_read_T *reader, int options);
/* vim: set ft=c : */