if(trg_pos>0){list.Add(Bry_fmtr_itm.dat_(trg_bry,trg_pos));trg_pos=0;}// something pending; add it to list
inteval_lhs_bgn=fmt_pos+2;
if(eval_lhs_bgn<fmt_len&&fmt[eval_lhs_bgn]==char_eval_bgn){// eval found
dirty_disable=false;// eval allows args to retrigger compiles; this is probably not used, but just in case, do not disable dirty; TEST: Tfds.Eq("012~{<>3<>}4", fmtr.Bld_str_many("1"));