On 23/06/08 19:28, Ben Schmidt wrote:
> Hi, Bram,
>
> Another oddity I've recently discovered is that str2nr won't accept an
> explicitly
> positive number, such as '+3'.
>
> This is unexpected. Would you be willing to adjust the behaviour? I can't
> think of
> any negative/compatibility-breaking side effects this would have, but I also
> don't
> know where the vim_str2nr function is used.
>
> The attached patch does the job.
>
> Cheers,
>
> Ben.
In +3, + is a unary operator, which in this case doesn't change the
number 3 to which it is applied.
eval('+3') gives the desired result, 3
Similarly, eval('--3') gives 3, changing the sign of the number -3 by
means of the unary - operator. (-3 is parsed as a single token, as can
be seen from the fact that str2nr('-3') == 3).
Maybe a note would be needed under ":help Number" to mention that +3 is
parsed as two tokens, viz. the unary operator + and the number 3
Best regards,
Tony.
--
"Even the best of friends cannot attend each other's funeral."
-- Kehlog Albran, "The Profit"
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