Issue #6115 has been reported by Nobuyoshi N…
Bug #6115: A block after the do-block without parenthesis
Author: Nobuyoshi N.
Status: Open
Priority: Normal
Assignee:
Category: core
Target version: 1.9.3
ruby -v: ruby 1.9.3p125 (2012-02-16 revision 34643)
[x86_64-darwin11.3.0]
=begin
= ((<pull request 102: A block after the do-block without
parenthesis|URL:A block after the do-block without parenthesis by pasberth · Pull Request #102 · ruby/ruby · GitHub>))
((<patch|URL:A block after the do-block without parenthesis · pasberth/ruby@2d66242 · GitHub>))
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