ocs_segment_remaining
static int32_t ocs_segment_remaining(ocs_textbuf_segment_t *segment);
avail = ocs_segment_remaining(segment);
avail = ocs_segment_remaining(segment);
avail = ocs_segment_remaining(segment);
if (ocs_segment_remaining(segment)) {
if (ocs_segment_remaining(segment) == 0) {
return ocs_segment_remaining(ocs_list_get_head(&textbuf->segment_list));