s/\|+/|/g;

This is assuming that the trailling pipe at the end of your first line of desired output is a typo.

Update: Too slow :-) Also, toolic's reply nudged me to remove the unnecessary escape in the replacement string.

In reply to Re: how to remove empty pipe delimiters in a line which doesn't contain any data by hippo
in thread how to remove empty pipe delimiters in a line which doesn't contain any data by rpinnam

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