My solution for my REPL is very simple; I use two consecutive semicolons to indicate the end of input; and I don't evaluate the input until I see it.

I just accumulate input lines, removing any newlines until I see my ad-hoc end-of-input indicator and then evaluate the entire expression. It is far simpler than trying to determine whether what you've got so far constitutes a complete expression.

With the rise and rise of 'Social' network sites: 'Computers are making people easier to use everyday'
Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
"Science is about questioning the status quo. Questioning authority". I knew I was on the right track :)
In the absence of evidence, opinion is indistinguishable from prejudice.

In reply to Re: howto parse (or determining end) of a line of perl by BrowserUk
in thread howto parse (or determining end) of a line of perl by perl-diddler

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