Gantt chart and Issues report can be exported to csv/pdf.
But when contents has Japanese(not Western) character, it doesn't work.

There are these problems:

--
1)Iconv.new is hardcorded with 'ISO-8859-1'.
Japanese requires 'SJIS'.
I think that it can be solved with introducing some mapping variable(hash, array, etc).

--
2)rfpdf plugin requires additional initializations for Japanese.
I tested on app/helpers/ifpdf_helpers.rb:
def initialize

  super

• extend(PDF_Japanese)

•  AddSJISFont()
  

  SetCreator("redMine #{Redmine::VERSION}")

  end

This is a bad example, but may be a hint in anyway...

--
3)rfpdf plugin may has bug(???)
in vendor/plugins/rfpdf/lib/rfpdf/japanese.rb 166:

  o=ord(c)

Method 'ord' is not exist(ruby1.8). And, while it seems to aim converting character(c) to number(o), but (c) is already
number.(I tested 'o=c.unpack("U")', and got error. (c) is not string, but fixnum.)

To output pdf correctly, I change that line into:

          o=c

But I'm not sure that this is OK. I don't know it's a -
a)not tested, only passing through from PHP version
b)tested on ruby1.9?(if added that method 'ord')

rfpdf's problem is out of this project. If this problem is difficult to solve, please add notice to README.