[ruby-core:74480] [Ruby trunk Bug#12200][Closed] MRI 2.2.4 parser forces blanks for hash keys which point to an array literal

Issue #12200 has been updated by Nobuyoshi Nakada.

Status changed from Open to Closed

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Bug #12200: MRI 2.2.4 parser forces blanks for hash keys which point to an array literal
https://bugs.ruby-lang.org/issues/12200#change-57600

* Author: Christian Aust
* Status: Closed
* Priority: Normal
* Assignee: 
* ruby -v: ruby 2.2.4p230 (2015-12-16 revision 53155) [x86_64-darwin15]
* Backport: 2.1: UNKNOWN, 2.2: UNKNOWN, 2.3: UNKNOWN
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In MRI 2.2.3 and below this was valid code:

~~~
$ ruby -v -e 'a={ name:%w(a b c) }; puts a'
ruby 2.2.3p173 (2015-08-18 revision 51636) [x86_64-darwin15]
{:name=>["a", "b", "c"]}
~~~

In MRI 2.2.4 the same code will generate a syntax error:

~~~
$ ruby -v -e 'a={ name:%w(a b c) }; puts a'
ruby 2.2.4p230 (2015-12-16 revision 53155) [x86_64-darwin15]
-e:1: syntax error, unexpected '%'
a={ name:%w(a b c)}; puts a
          ^
-e:1: syntax error, unexpected '}', expecting end-of-input
a={ name:%w(a b c)}; puts a
                   ^
~~~

However, adding a blank between the **:** and the **%** fixes the error:

~~~
$ ruby -v -e 'a={ name: %w(a b c) }; puts a'
ruby 2.2.4p230 (2015-12-16 revision 53155) [x86_64-darwin15]
{:name=>["a", "b", "c"]}
~~~

Is this the intended behavior? Regards

Christian



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