Issue #14823 has been updated by shevegen (Robert A. Heiler).


This boggles my mind.

I thought an endless range means infinity, or "open ended". Can we reach the point
before infinity - or "endlessity"?

This here also tampers with my mind:

    (1...) == (1..)

But in a wicked way ... adding one more '.' should make it be more than just 
infinity now, should it not. :)

> I think the use of ... with an endless range should be a SyntaxError. 

I agree, if only for keeping my sanity.

----------------------------------------
Bug #14823: Endless Range Excluding End
https://bugs.ruby-lang.org/issues/14823#change-72379

* Author: jeremyevans0 (Jeremy Evans)
* Status: Open
* Priority: Normal
* Assignee: 
* Target version: 
* ruby -v: ruby 2.6.0preview2 (2018-05-31 trunk 63539) [x86_64-openbsd]
* Backport: 2.3: UNKNOWN, 2.4: UNKNOWN, 2.5: UNKNOWN
----------------------------------------
Does it make sense for an endless range to exclude the end?  It is currently supported, but the semantics are questionable.

~~~
(1..)
# => 1..
(1...)
# => 1...
(1...) == (1..)
# => false
~~~

I think it may be better to only allow `..` for endless ranges, and not allow `...`. I think the use of `...` with an endless range should be a SyntaxError. 



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