Backport #5379: the join method of array return different encoding result

• Status: Closed
• Assignee: yugui (Yuki Sonoda)

[saberma (saber ma)]

ruby-1.9.3-rc1 :001 > [[], "中文"].join
=> "中文"

This is fine. But is the last element is nil, the result is different.

ruby-1.9.3-rc1 :002 > [[], "中文", nil].join
=> "\xE4\xB8\xAD\xE6\x96\x87"

It will cause some gems to raise error: incompatible character encodings: UTF-8 and US-ASCII

This bug can be reproduct in ruby1.9.3 preview1 and rc1, but ruby1.9.2 p180 and p290 is ok.

ruby-1.9.2-p180 :001 > [[], "中文",nil].join
=> "中文"
ruby-1.9.2-p180 :002 > [[], "中文"].join
=> "中文"

[nobu (Nobuyoshi Nakada)]

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

This issue was solved with changeset r33363.
saber, thank you for reporting this issue.
Your contribution to Ruby is greatly appreciated.
May Ruby be with you.

---

• array.c (ary_join_1): should not copy the encoding of non-string
  element after string element. [ruby-core:39776] [Bug #5379]

[nobu (Nobuyoshi Nakada)]

• Tracker changed from Bug to Backport
• Project changed from Ruby master to Backport193
• Status changed from Closed to Assigned
• Assignee set to yugui (Yuki Sonoda)
• Target version deleted (1.9.3)

[naruse (Yui NARUSE)]

Please backport it with r33364.

[kosaki (Motohiro KOSAKI)]

• Status changed from Assigned to Closed

This issue was solved with changeset r33436.
saber, thank you for reporting this issue.
Your contribution to Ruby is greatly appreciated.
May Ruby be with you.

---

merge revision(s) 33363:

* array.c (ary_join_1): should not copy the encoding of non-string
  element after string element.  [ruby-core:39776] [Bug #5379]

[kosaki (Motohiro KOSAKI)]

OK, this is regression.
r33436 and r33437.