if((u = strchr(dest, ';')))
if((u = strrchr(dest, ':')))
static char *maildir_canon_filename(char *dest, char *src, size_t l){  char *t, *u;    if((t = strchr(src, '/')))    src = t + 1;  strfcpy(dest, src, l);  if((u = strchr(dest, ';')))    *u = '\0';    return dest;}