Backport #6054: IO.foreach を Enumerator 化したときキーワード引数が無視される

• Status: Closed
• Assignee: -

[wanabe (_ wanabe)]

http://toro.2ch.net/test/read.cgi/tech/1324826777/666-675 で指摘があったのですが
末尾に示すように、IO.foreach にブロックを渡さず Enumerator 化したときキーワード引数が無視されます。
上の書き込みによると "先にハッシュオプション取り除いてからEnumeratorを生成しちゃってるのでハッシュオプションがEnumeratorには反映されない" とのことでした。
rb_io_s_foreach 中の RETURN_ENUMERATOR を rb_scan_args より先にするべきではないか、ということのようです。

$ cat foo.rb
p IO.foreach(FILE,mode:"a").next
IO.foreach(FILE,mode:"a") {|l| p l }

$ ruby -v foo.rb
ruby 2.0.0dev (2012-02-21 trunk 34711) [i686-linux]
"p IO.foreach(FILE,mode:"a").next\n"
foo.rb:2:in foreach': not opened for reading (IOError) from foo.rb:2:in

'

[nobu (Nobuyoshi Nakada)]

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

This issue was solved with changeset r34735.
_, thank you for reporting this issue.
Your contribution to Ruby is greatly appreciated.
May Ruby be with you.

---

• io.c (rb_io_s_foreach): return enumerator including kerword
  arguments. [ruby-dev:45267][Bug #6054]

[nobu (Nobuyoshi Nakada)]

• Tracker changed from Bug to Backport
• Project changed from Ruby to 13
• Status changed from Closed to Open

[nobu (Nobuyoshi Nakada)]

• Tracker changed from Backport to Bug
• Project changed from 13 to Ruby

[nobu (Nobuyoshi Nakada)]

• % Done changed from 100 to 50
• ruby -v set to ruby 2.0.0dev (2012-02-21 trunk 34711) [i686-linux]

[nobu (Nobuyoshi Nakada)]

• Status changed from Open to Closed
• % Done changed from 50 to 100

Re-fixed at r34736 for [ruby-dev:31525].

[nobu (Nobuyoshi Nakada)]

• Tracker changed from Bug to Backport
• Project changed from Ruby to 13