Your replacement isn't equivalent to the code you claim it can replace. First of all, your code will not remove a newline followed by a newline - you'd need (?=(?s:.)) for that, or the /s modifier. Second, the original code will always let $code end with a newline; regardless whether it ended with a newline. In your replacement, there will only be a trailing newline in $code if there was one originally.

In reply to Re^2: Recursive Regex by JavaFan
in thread Parsing using Regex and Lookahead by deMize

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