Fix an issue with none and 0 in expressions. #1697
Merged
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As discussed in #1695, there is an
issue with some expressions involving "0" (and by extension "none"). If you
said "0 of them" and one of them matched we would evaluate that expression to
true because we never checked for the special 0 case.
Turns out this bug has existed for a while now but was likely never triggered
because not many people would say "0 of them" before the "none" keyword came
around. However, the author of the issue is correct that this should have been
exposed with better tests when I implemented the none keyword.
Fixes #1695.