ruby-core

Mailing list archive

[#78633] ruby/spec needs help from CRuby committers — Benoit Daloze <eregontp@...>

Currently, ruby/spec is maintained mostly by individuals and enjoys the

13 messages 2016/12/13

[ruby-core:78585] [Ruby trunk Bug#13022] Nested array syntax error returns nil

From: merch-redmine@...
Date: 2016-12-10 17:28:52 UTC
List: ruby-core #78585
Issue #13022 has been updated by Jeremy Evans.


Yes, this is expected behavior.  Ruby parses this as:

~~~ ruby
[[1,3], [5,6].[](11, 15), [17,22]] 
~~~

And Array#[] returns nil if the starting index (11) is out of range.


----------------------------------------
Bug #13022: Nested array syntax error returns nil
https://bugs.ruby-lang.org/issues/13022#change-61971

* Author: Harry Whelchel
* Status: Open
* Priority: Normal
* Assignee: 
* ruby -v: 2.3.3
* Backport: 2.1: UNKNOWN, 2.2: UNKNOWN, 2.3: UNKNOWN
----------------------------------------
If you leave out a comma in a nested array, ruby returns `nil` instead of raising a SyntaxError. Is this expected behavior?

1. Create a nested array with a missing comma:

[[1,3], [5,6] [11, 15], [17,22]] #=> [[1, 3], nil, [17, 22]]




-- 
https://bugs.ruby-lang.org/

Unsubscribe: <mailto:ruby-core-request@ruby-lang.org?subject=unsubscribe>
<http://lists.ruby-lang.org/cgi-bin/mailman/options/ruby-core>

In This Thread

Prev Next