patch 7.4.1378
Problem: Can't change job settings after it started.
Solution: Add job_setoptions() with the "stoponexit" flag.
diff --git a/src/proto/eval.pro b/src/proto/eval.pro
index e63205e..780b40c 100644
--- a/src/proto/eval.pro
+++ b/src/proto/eval.pro
@@ -80,6 +80,7 @@
char_u *get_dict_string(dict_T *d, char_u *key, int save);
long get_dict_number(dict_T *d, char_u *key);
int channel_unref(channel_T *channel);
+void job_stop_on_exit(void);
int string2float(char_u *text, float_T *value);
char_u *get_function_name(expand_T *xp, int idx);
char_u *get_expr_name(expand_T *xp, int idx);