strbuf_addf(&out, "packet: %12s%c ",
packet_trace_prefix, write ? '>' : '<');
- if ((len >= 4 && !prefixcmp(buf, "PACK")) ||
- (len >= 5 && !prefixcmp(buf+1, "PACK"))) {
+ if ((len >= 4 && starts_with(buf, "PACK")) ||
+ (len >= 5 && starts_with(buf+1, "PACK"))) {
strbuf_addstr(&out, "PACK ...");
unsetenv(trace_key);
}