freebsd-ports/shells/zsh+euc_hack/files/patch-Src::Zle::zle_utils.c
Akinori MUSHA f1f99beceb 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. :)
2002-05-11 21:48:26 +00:00

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C

--- Src/Zle/zle_utils.c.orig Mon Mar 26 17:58:34 2001
+++ Src/Zle/zle_utils.c Thu May 9 17:57:20 2002
@@ -197,6 +197,17 @@
mod_export void
backdel(int ct)
{
+#ifdef ZSH_EUC
+ if (locale_is_euc) {
+ if (ct == 1) {
+ if (_mbmap_euc[line[cs-1]] & _MB2 &&
+ cs-2 >=0 &&
+ _mbmap_euc[line[cs-2]] & _MB1) {
+ ct = 2;
+ }
+ }
+ }
+#endif
shiftchars(cs -= ct, ct);
}