How to explicte specify -t be the "non-blank to blank transition"?

[Peng Yu]

Hi,

I don't see a way to explicit set -t to "non-blank to blank
transition", although implicit it is set so. Is there a way to
explictly set -t to "non-blank to blank transition"? More general, is
there a way to set the separator to other transitions?

       -t, --field-separator=SEP
              use SEP instead of non-blank to blank transition

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Regards,
Peng