From: Julian Raschke <julian@...>
Date: 2011-06-17T09:49:11+09:00
Subject: [ruby-core:37191] [Ruby 1.9 - Bug #4561] 1.9.2 requires parentheses around argument of method call in an array, where 1.8.7 did not


Issue #4561 has been updated by Julian Raschke.


Yukihiro Matsumoto wrote:
>  It's an intentional syntax change in 1.9.

I have run into the same issue today and wasn't sure if it was a bug or intentional. Glad I found your note here!

Out of curiosity, what is the reasoning behind this breaking change? It seems a bit unintuitive that foo(bar 5) works, but [bar 5] not, and both are enclosed calls without parenthesis. Is there an ambiguity nearby that I am missing?
----------------------------------------
Bug #4561: 1.9.2 requires parentheses around argument of method call in an array, where 1.8.7 did not
http://redmine.ruby-lang.org/issues/4561

Author: Dave Schweisguth
Status: Assigned
Priority: Normal
Assignee: Yukihiro Matsumoto
Category: core
Target version: 
ruby -v: -


=begin
[dave hladik:~] cat method_call_without_parens_in_array.rb 
def method_name(arg)
end

[ method_name 'value' ]
[dave hladik:~] ruby -v
ruby 1.8.7 (2011-02-18 patchlevel 334) [i686-darwin10]
[dave hladik:~] ruby method_call_without_parens_in_array.rb 
[dave hladik:~] rvm 1.9.2
[dave hladik:~] ruby -v
ruby 1.9.2p180 (2011-02-18 revision 30909) [x86_64-darwin10.7.0]
[dave hladik:~] ruby method_call_without_parens_in_array.rb 
method_call_without_parens_in_array.rb:4: syntax error, unexpected tSTRING_BEG, expecting keyword_do or '{' or '('
[ method_name 'value' ]
               ^
method_call_without_parens_in_array.rb:4: syntax error, unexpected ']', expecting $end
[dave hladik:~] rvm system
[dave hladik:~] ruby -v
ruby 1.8.7 (2011-02-18 patchlevel 334) [i686-darwin10]
[dave hladik:~] cat method_call_with_parens_in_array.rb
def method_name(arg)
end

[ method_name('value') ]
[dave hladik:~] ruby -v
ruby 1.8.7 (2011-02-18 patchlevel 334) [i686-darwin10]
[dave hladik:~] ruby method_call_with_parens_in_array.rb
[dave hladik:~] rvm 1.9.2
[dave hladik:~] ruby -v
ruby 1.9.2p180 (2011-02-18 revision 30909) [x86_64-darwin10.7.0]
[dave hladik:~] ruby method_call_with_parens_in_array.rb
# no error

=end



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