commit https://github.com/vim/vim/commit/56ead341a75e1a0395eee94a3280c67e2278a57e Author: Bram Moolenaar <Bram@vim.org> Date: Tue Feb 2 18:20:08 2016 +0100 patch 7.4.1238 Problem: Can't handle two messages right after each other. Solution: Find the end of the JSON. Read more when incomplete. Add a C test for the JSON decoding.

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