This solution makes the assumption that if spaces occur, they will always occur at four-digit intervals. The OP didn't say that was the case. While it may be the case, we're not sure.

Your use of tr/// is ineffective, at any rate. It's doing nothing. If evaluated in scalar context it would return the number of spaces found, but if you intended to delete spaces, you need to add the /d modifier. However, that would be contrary to what the OP was asking. In his example output, whitespace is preserved.


Dave

In reply to Re^2: How to write a regular expression to extract a number from an embedded string? by davido
in thread How to write a regular expression to extract a number from an embedded string? by jwking

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