char **strv_merge_concat(char **a, char **b, const char *suffix);
char **strv_append(char **l, const char *s);
int strv_extend(char ***l, const char *value);
+int strv_push(char ***l, char *value);
char **strv_remove(char **l, const char *s);
char **strv_remove_prefix(char **l, const char *s);