My answer starts by "I guess", so you have to take it for what it is. do FILE; is kinda like goto FILE; except it works. Like goto, do has two different meanings depending on the syntax, and the flow-control side means the keywords are not parsed like most other.

Edit: I'm not saying that do is always flow control, but that since it may be, the parser deals with it differently

In reply to Re^3: parser bug handling 'do ($foo)->{bar}' ? by Eily
in thread parser bug handling 'do ($foo)->{bar}' ? by LanX

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