(I agree with what you say, but... I think a little simplification may be in order.)

The reason for the lookahead (?=\d) is so it wouldn't replace a string "0000" with "", but with "0", by requiring at least one remaining digit.

So the purpose is to strip leading zeros from strings that look like numbers, but leave a significant "0".

In reply to Re^2: regex meaning by bart
in thread regex meaning by hashin_p

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