eol = nl - sb.buf;
                        else
                                eol = sb.len;
-                       if (!prefixcmp(sb.buf + previous, "\nConflicts:\n")) {
+                       if (starts_with(sb.buf + previous, "\nConflicts:\n")) {
                                ignore_footer = sb.len - previous;
                                break;
                        }
                        eol = sb->len;
 
                if (strlen(sign_off_header) <= eol - i &&
-                   !prefixcmp(sb->buf + i, sign_off_header)) {
+                   starts_with(sb->buf + i, sign_off_header)) {
                        i = eol;
                        continue;
                }
 {
        struct wt_status *s = cb;
 
-       if (!prefixcmp(k, "column."))
+       if (starts_with(k, "column."))
                return git_column_config(k, v, "status", &s->colopts);
        if (!strcmp(k, "status.submodulesummary")) {
                int is_bool;
                s->display_comment_prefix = git_config_bool(k, v);
                return 0;
        }
-       if (!prefixcmp(k, "status.color.") || !prefixcmp(k, "color.status.")) {
+       if (starts_with(k, "status.color.") || starts_with(k, "color.status.")) {
                int slot = parse_status_slot(k, 13);
                if (slot < 0)
                        return 0;
 
        head = resolve_ref_unsafe("HEAD", junk_sha1, 0, NULL);
        printf("[%s%s ",
-               !prefixcmp(head, "refs/heads/") ?
+               starts_with(head, "refs/heads/") ?
                        head + 11 :
                        !strcmp(head, "HEAD") ?
                                _("detached HEAD") :