I agree with that completely. This would also become a gotcha. I can see a lot of people down the road thinking -x ** 2 === -x**2, only to find that's not the case. It looks like it should, which will quickly lead to hard to find bugs. I think it's a terrible idea, but that's just my opinion.
On Fri, Aug 28, 2015, 00:56 Brendan Eich <bren...@mozilla.org> wrote: > Not to worry, the significant whitespace prospect was (I trust) a > warding-off spell. Good of Waldemar to mention Fortress, too. > > JS, which as source is and will always be minified, indeed requires > full-parsing minifiers, so one might naively still entertain the stated > prospect. But it's a bad idea, since people minify (or just tidy by > removing spaces) by hand. Keep warding off significant space! > > /be > > Joe Gibbs Politz wrote: > > On Thu, Aug 27, 2015 at 2:58 PM, Alexander Jones<a...@weej.com> wrote: > >> Ethan is making my point far better than I did, and I agree completely > about > >> the issue of unary operators visually appearing more tightly bound than > >> binary operators. > >> > >> At this point it seems fair to at least acknowledge the prospect of > >> significant whitespace. > >> > >> ``` > >> -x**2 === -(x ** 2) > >> -x ** 2 === (-x) ** 2 > >> ``` > > > > One kind of cost that I haven't seen mentioned (and is relevant > > re:whitespace) is the impact on minifiers and other tools that use JS > > as output, which have to deal with operator precedence/whitespace > > rules in quite complicated ways. There's a nice recent piece about > > precedence bugs in a minifier: > > > > https://zyan.scripts.mit.edu/blog/backdooring-js/ > > > > Making the creation and maintenance of systems like minifiers harder > > is a real cost worth bearing in mind when updating already-subtle > > existing rules. > > _______________________________________________ > > es-discuss mailing list > > es-discuss@mozilla.org > > https://mail.mozilla.org/listinfo/es-discuss > > > _______________________________________________ > es-discuss mailing list > es-discuss@mozilla.org > https://mail.mozilla.org/listinfo/es-discuss >
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