You should test whether your modifications do not break anything.
See https://www.fieldtriptoolbox.org/development/testing/

When outside the DCCN, please consider testing: test_bug2185, test_pull1566, test_bug2971, test_bug798, test_issue1089, test_ft_selectdata_union, test_issue1400, test_bug2994, test_ft_selectdata, test_bug1514, test_issue2017, test_issue2072, test_bug97, test_ft_sourcegrandaverage, test_bug2563, test_bug2502, test_bug1483, test_issue1507, test_bug2224, test_bug1232, test_bug2160, test_bug2394, test_bug2816, test_bug2363, test_bug2508, test_tutorial_beamformingextended, test_bug3354, test_bug2509, test_bug1409, test_bug2528, test_bug1014, test_bug1658, test_bug2444, test_bug2597, test_bug2197

When inside the DCCN, please also consider testing: test_bug2185, test_bug2544, test_issue1334, test_bug2464, test_bug932, test_bug3184, test_bug798, test_bug1881, test_bug2754, test_bug2221, test_bug921, test_bug97, test_bug1800

Suggested tests outside the DCCN use public data or do not use data.
Suggested tests inside the DCCN use private data.

You should test whether your modifications do not break anything.
See https://www.fieldtriptoolbox.org/development/testing/

When outside the DCCN, please consider testing: test_issue2072, test_bug2816, test_bug2224, test_bug2460, test_bug2971, test_pull1877, test_bug3275, test_ft_selectdata, test_bug798, test_bug1405, test_issue1068, test_issue1507, test_bug2528, test_bug1600, test_tutorial_beamformingextended, test_bug27, test_issue2017, test_bug1658, test_bug2363, test_bug1014, test_bug2639, test_bug1514, test_bug1232, test_ft_selectdata_union, test_bug2197, test_pull1566, test_issue1866, test_bug2508, test_bug2394, test_ft_componentanalysis_methods, test_bug1409, test_bug2556, test_bug2444, test_bug46, test_issue1400, test_bug2148, test_bug2563, test_bug1483, test_issue1459, test_ft_checkdata, test_bug2502, test_bug2783, test_bug2185, test_bug2509, test_bug2664, test_bug2994, test_bug1775, test_bug2160, test_bug97, test_bug2597, test_issue1089, test_bug2965, test_ft_sourcegrandaverage, test_bug3354

When inside the DCCN, please also consider testing: test_bug798, test_bug27, test_bug2464, test_bug2754, test_bug921, test_issue1334, test_bug811, test_bug932, test_bug1881, test_eeglab_ft_integration, test_bug1800, test_bug1887, test_bug3144, test_bug1390, test_bug2613, test_bug2185, test_bug3184, test_ft_datatype, test_bug2559, test_bug97, test_bug2544, test_bug1315, test_bug2539, test_bug2221

Suggested tests outside the DCCN use public data or do not use data.
Suggested tests inside the DCCN use private data.