This patch originates from the Debian project, see https://www.debian.org/

13widechar_horrors.dpatch by  <hesso@pool.math.tu-berlin.de>


This patch tries to cope with the fact that widechar support in nvi is at
best rudimentary.

Hunk 1)
* Due to "ch = *t", this code is not wide-char aware, so
  cast the value to a proper type so the KEY_ macros make
  the right choice.
Hunk 2)
* Printing of the in-/decreased number back into the screen
  buffer is not widechar-aware, either. Add a dirty fix.
  Cf. #497349.

--- nvi-1.81.6.orig/vi/vs_msg.c	2007-11-18 17:41:42.000000000 +0100
+++ nvi-1.81.6/vi/vs_msg.c	2009-03-01 14:51:08.211414132 +0100
@@ -472,10 +472,10 @@
 			 */
 			if (ch == '\t')
 				ch = ' ';
-			chlen = KEY_LEN(sp, ch);
+			chlen = KEY_LEN(sp, (unsigned char)ch);
 			if (cbp + chlen >= ecbp)
 				FLUSH;
-			for (kp = KEY_NAME(sp, ch); chlen--;)
+			for (kp = KEY_NAME(sp, (unsigned char)ch); chlen--;)
 				*cbp++ = *kp++;
 		}
 		if (cbp > cbuf)
--- nvi-1.81.6.orig/vi/v_increment.c	2007-11-18 17:41:42.000000000 +0100
+++ nvi-1.81.6/vi/v_increment.c	2009-03-01 15:12:50.950415874 +0100
@@ -57,7 +57,7 @@
 	long change, ltmp, lval;
 	size_t beg, blen, end, len, nlen, wlen;
 	int base, isempty, rval;
-	char *ntype, nbuf[100];
+	char *ntype, nbuf[100 * sizeof(CHAR_T)];
 	CHAR_T *bp, *p, *t;
 
 	/* Validate the operator. */
@@ -202,7 +202,7 @@
 		/* If we cross 0, signed numbers lose their sign. */
 		if (lval == 0 && ntype == fmt[SDEC])
 			ntype = fmt[DEC];
-		nlen = snprintf(nbuf, sizeof(nbuf), ntype, lval);
+		nlen = snprintf(nbuf, sizeof(nbuf)/sizeof(CHAR_T), ntype, lval);
 	} else {
 		if ((nret = nget_uslong(sp, &ulval, t, NULL, base)) != NUM_OK)
 			goto err;
@@ -224,7 +224,15 @@
 		if (base == 16)
 			wlen -= 2;
 
-		nlen = snprintf(nbuf, sizeof(nbuf), ntype, wlen, ulval);
+		nlen = snprintf(nbuf, sizeof(nbuf)/sizeof(CHAR_T), ntype, wlen, ulval);
+	}
+
+	/* Inflate the printed char buffer to CHAR_T elements if necessary */
+	if (sizeof(CHAR_T) > sizeof(char)) {
+		int nlen_inflate;
+		for (nlen_inflate = nlen; nlen_inflate >= 0; nlen_inflate--) {
+			((CHAR_T *)nbuf)[nlen_inflate] = nbuf[nlen_inflate];
+		}
 	}
 
 	/* Build the new line. */