t / t4018 / css-colon-selectoron commit strbuf.c: add `strbuf_insertf()` and `strbuf_vinsertf()` (5ef264d)
   1RIGHT a:hover {
   2    margin-top:
   3    10px!important;
   4    border : 10px ChangeMe #C6C6C6;
   5}