Fix decor assigning bug with a large number of parameters
E.G.
runtime  -t 1000 -m 45 -p GAP -1 0 -p SPAN 1 2 -p METRIC rel freq -p DATASET1 iprg_pos_6_num_first500.dat -p THRESHOLD 0.5 0.4 -u '(DATASET1)fxTHRESHOLDlx(METRICcx(GAPxSPAN)c)c' -- echo DATASET1 DATASET2 THRESHOLD PATTERN METRIC CLASSIFIER GAP SPAN NUM_FOLDS

-> creates one file per value of metricxgapxpattern (it shouldn't since metric is decored with c)