Hi,

I wonder if there any plans on adding multibyte support for ls(1)?
Or maybe there's a reason why it's not a great idea (which I am not
aware of)?
Anyway, here's a patch I have. It's based on DragonFlyBSD's ls.


diff -u ls/ls.c ls/ls.c
--- ls/ls.c	Wed Nov 24 17:39:05 2010
+++ ls/ls.c	Tue Jan  4 19:44:35 2011
@@ -42,6 +42,7 @@
 #include <errno.h>
 #include <fts.h>
 #include <grp.h>
+#include <locale.h>
 #include <pwd.h>
 #include <stdio.h>
 #include <stdlib.h>
@@ -101,6 +102,8 @@
 	int ch, fts_options, notused;
 	int kflag = 0;
 	char *p;
+
+	setlocale(LC_ALL, "");
 
 	/* Terminal defaults to -Cq, non-terminal defaults to -1. */
 	if (isatty(STDOUT_FILENO)) {
diff -u ls/util.c ls/util.c
--- ls/util.c	Wed Nov 24 17:39:05 2010
+++ ls/util.c	Tue Jan  4 21:04:22 2011
@@ -35,12 +35,14 @@
 
 #include <sys/types.h>
 #include <sys/stat.h>
+#include <sys/limits.h>
 
 #include <ctype.h>
 #include <fts.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
+#include <wchar.h>
 
 #include "ls.h"
 #include "extern.h"
@@ -48,11 +50,44 @@
 int
 putname(char *name)
 {
-	int len;
+	mbstate_t mbs;
+	wchar_t wc;
+	int i, len;
+	size_t clen;
 
-	for (len = 0; *name; len++, name++)
-		putchar((!isprint(*name) && f_nonprint) ? '?' : *name);
-	return len;
+	memset(&mbs, 0, sizeof(mbs));
+	len = 0;
+	while ((clen = mbrtowc(&wc, name, MB_LEN_MAX, &mbs)) != 0) {
+		if (clen == (size_t)-1) {
+			if (f_nonprint)
+				putchar('?');
+			else
+				putchar((unsigned char)*name);
+			name++;
+			len++;
+			memset(&mbs, 0, sizeof(mbs));
+			continue;
+		}
+		if (clen == (size_t)-2) {
+			if (f_nonprint) {
+				putchar('?');
+				len++;
+			} else
+				len += printf("%s", name);
+			break;
+		}
+		if (f_nonprint && !iswprint(wc)) {
+			putchar('?');
+			name += clen;
+			len++;
+			continue;
+		}
+		for (i = 0; i < (int)clen; i++)
+			putchar((unsigned char)name[i]);
+		name += clen;
+		len += wcwidth(wc);
+	}
+	return (len);
 }
 
 void