o->xdl_opts = DIFF_WITH_ALG(o, PATIENCE_DIFF);
else if (!strcmp(s, "histogram"))
o->xdl_opts = DIFF_WITH_ALG(o, HISTOGRAM_DIFF);
- else if (!strcmp(s, "diff-algorithm=")) {
- long value = parse_algorithm_value(s+15);
+ else if (!prefixcmp(s, "diff-algorithm=")) {
+ long value = parse_algorithm_value(s + strlen("diff-algorithm="));
if (value < 0)
return -1;
/* clear out previous settings */