Add zsh+euc, Zsh with EUC encoding support.

This is just an experimental hack and cannot happily be merged into
the upstream.  Zsh's line editor apparently needs a rewrite in order
to support multi-byte encodings because it strongly relies on the
single-byte character scheme.

These patches are mostly based on the work by ono@ono.org (Thanks!):

	http://www.ono.org/software/zsh-euc/

What I did over this is disable the hack for non-EUC locales.  Maybe
the patches can be moved to shells/zsh in the future, but it's
premature for the moment.

Notes:
- forward-char, backward-char and backward-delete-char with no numeric
  argument should work properly with this hack.
- Completion and redisplay should work fine.
- There can be some trivial side-effects.
- JIS X0201-Roman and JIS X0208-Kanji are supported.
- JIS X0201-Katakana and JIS X0212 Kanji are NOT supported.
- Only tested with the EUC-JP (ja_JP.eucJP) locale.  I'm not sure if
  it works for GB 2312/CNS 11643-1/KS X 1001.  Any feedbacks is
  welcome, especially a patch if it does not work. :)

1 files changed, 1 insertions, 0 deletions

diff --git a/shells/Makefile b/shells/Makefile
index e2d663fd4547..c147ebb71150 100644
--- a/shells/Makefile
+++ b/shells/Makefile
@@ -21,6 +21,7 @@
     SUBDIR += vshnu
     SUBDIR += wapsh
     SUBDIR += zsh
+    SUBDIR += zsh+euc_hack
     SUBDIR += zsh-devel
 
 .include <bsd.port.subdir.mk>