**/
_PUBLIC_ void string_sub(char *s,const char *pattern, const char *insert, size_t len);
+_PUBLIC_ void string_sub_once(char *s, const char *pattern,
+ const char *insert, size_t len);
_PUBLIC_ char *string_sub_talloc(TALLOC_CTX *mem_ctx, const char *s,
const char *pattern, const char *insert);