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freebsd-ports/shells/zsh+euc_hack/files/patch-Src::Zle::zle_refresh.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

48 lines
1.2 KiB
C

--- Src/Zle/zle_refresh.c.orig Mon Sep 10 19:48:51 2001
+++ Src/Zle/zle_refresh.c Thu May 9 08:36:47 2002
@@ -647,7 +647,11 @@
static void
refreshline(int ln)
{
+#ifdef ZSH_EUC
+ unsigned char *nl, *ol, *p1; /* line buffer pointers */
+#else
char *nl, *ol, *p1; /* line buffer pointers */
+#endif
int ccs = 0, /* temporary count for cursor position */
char_ins = 0, /* number of characters inserted/deleted */
col_cleareol, /* clear to end-of-line from this column */
@@ -753,7 +757,32 @@
for (;;) {
if (*nl && *ol && nl[1] == ol[1]) /* skip only if second chars match */
/* skip past all matching characters */
+#ifdef ZSH_EUC
+ {
+ if (locale_is_euc) {
+ for (; *nl && (*nl == *ol); nl++, ol++, ccs++) {
+ if (_mbmap_euc[*nl] & _MB1) {
+ if (*(ol+1) == '\0')
+ continue;
+ if (_mbmap_euc[*(nl+1)] & _MB2) {
+ if (*(nl+1) != *(ol+1))
+ break;
+ else {
+ nl++;
+ ol++;
+ ccs++;
+ }
+ } else if (*(nl+1) == '\0') {
+ continue;
+ }
+ }
+ }
+ } else
+#endif
for (; *nl && (*nl == *ol); nl++, ol++, ccs++) ;
+#ifdef ZSH_EUC
+ }
+#endif
if (!*nl) {
if (ccs == winw && hasam && char_ins > 0 && ins_last