Bug #6115: A block after the do-block without parenthesis

• Status: Closed
• Assignee: -
• Target version: 1.9.3
• ruby -v: ruby 1.9.3p125 (2012-02-16 revision 34643) [x86_64-darwin11.3.0]

[nobu (Nobuyoshi Nakada)]

=begin
= ((<pull request 102 by pasberth: A block after the do-block without parenthesis|URL:https://github.com/ruby/ruby/pull/102>))
((<patch|URL:https://github.com/pasberth/ruby/commit/2d6624238aae89110141a8e223f244bf92eb27a9>))

I think seemingly this source code is no problem:

$ cat unexpected.rb

langs = ["Ruby"]
langs.each_with_object [] do |lang, the_langs|
the_langs << "The #{lang}"
end.each do |the_lang|
puts the_lang
end

But syntax error:

$ ruby unexpected.rb
unexpected.rb:4: syntax error, unexpected keyword_do
end.each do |the_lang|
^
unexpected.rb:5: syntax error, unexpected tIDENTIFIER, expecting keyword_do or '{' or '('

I want to this code behaves like:

$ cat expected.rb

langs = ["Ruby"]
(langs.each_with_object [] do |lang, the_langs|
the_langs << "The #{lang}"
end).each do |the_lang|
puts the_lang
end

$ ruby expected.rb
The Ruby

I changed the block_call in the parse.y to a primary-expression.

$ ./ruby -I./lib -I. unexpected.rb
The Ruby

英語に自信がないので日本語でも失礼します。

上の unexpected.rb はぼくには一見なんの問題もなさそうなコードに見えます。
しかしそれは構文エラーです。
ぼくはこのブロックを一次式として扱うべきだと思いました。

=end

[nobu (Nobuyoshi Nakada)]

• Status changed from Open to Closed
• % Done changed from 0 to 100

This issue was solved with changeset r34913.
Nobuyoshi, thank you for reporting this issue.
Your contribution to Ruby is greatly appreciated.
May Ruby be with you.

---

• parse.y (block_call): rules for block_call after block_call.
  based on a patch by pasberth https://github.com/ruby/ruby/pull/102
  [ruby-dev:45308][Bug #6115]