a patch for output utf-8 strings in windows console.

shell.c.diff

--- shell.c.orig  Fri Apr 12 21:21:39 2013
+++ shell.c	Sat May 18 10:16:01 2013
@@ -36,6 +36,81 @@
 #include <ctype.h>
 #include <stdarg.h>
 
+#if defined(_WIN32)
+#include <windows.h>
+#include <wincon.h>
+static int stdout_is_interactive = 0;
+int w32cons_vfprintf(FILE *fp, const char *fmt, va_list arg)
+{
+    if (stdout_is_interactive) {
+	int r;
+	UINT prev_cp = GetConsoleCP();
+	SetConsoleOutputCP(CP_UTF8);
+	r = vfprintf(fp, fmt, arg);
+	fflush(fp);
+	SetConsoleOutputCP(prev_cp);
+	return r;
+    } else
+      return vfprintf(fp, fmt, arg);
+}
+int w32cons_fprintf(FILE *fp, const char *fmt, ...)
+{
+    int r;
+    va_list args;
+    va_start(args, fmt);
+    r = w32cons_vfprintf(fp, fmt, args);
+    va_end(args);
+    return r;
+}
+int w32cons_printf(const char *fmt, ...)
+{
+    int r;
+    va_list args;
+    va_start(args, fmt);
+    r = w32cons_vfprintf(stdout, fmt, args);
+    va_end(args);
+    return r;
+}
+void w32cons_cls( HANDLE hConsole )
+{
+    COORD coordScreen = { 0, 0 };    /* here's where we'll home the
+                                        cursor */ 
+    BOOL bSuccess;
+    DWORD cCharsWritten;
+    CONSOLE_SCREEN_BUFFER_INFO csbi; /* to get buffer info */ 
+    DWORD dwConSize;                 /* number of character cells in
+                                        the current buffer */ 
+
+    /* get the number of character cells in the current buffer */ 
+
+    bSuccess = GetConsoleScreenBufferInfo( hConsole, &csbi );
+    dwConSize = csbi.dwSize.X * csbi.dwSize.Y;
+
+    /* fill the entire screen with blanks */ 
+
+    bSuccess = FillConsoleOutputCharacter( hConsole, (TCHAR) ' ',
+					   dwConSize, coordScreen, &cCharsWritten );
+
+    /* get the current text attribute */ 
+
+    bSuccess = GetConsoleScreenBufferInfo( hConsole, &csbi );
+
+    /* now set the buffer's attributes accordingly */ 
+
+    bSuccess = FillConsoleOutputAttribute( hConsole, csbi.wAttributes,
+					   dwConSize, coordScreen, &cCharsWritten );
+
+    /* put the cursor at (0, 0) */ 
+
+    bSuccess = SetConsoleCursorPosition( hConsole, coordScreen );
+    return;
+}
+
+#define vfprintf(fp, fmt, args) w32cons_vfprintf(fp, fmt, args)
+#define fprintf(fp, fmt, ...) w32cons_fprintf(fp, fmt, __VA_ARGS__)
+#define printf(fmt, ...) w32cons_printf(fmt, __VA_ARGS__)
+#endif
+
 #if !defined(_WIN32) && !defined(WIN32)
 # include <signal.h>
 # if !defined(__RTP__) && !defined(_WRS_KERNEL)
@@ -3140,6 +3215,12 @@
           if( bail_on_error ) return rc;
         }
       }
+    } else if (strcmp(z, "-utf8-console") == 0) {
+	stdout_is_interactive = isatty(1);
+    } else if (strcmp(z, "-utf8-console-cls") == 0) {
+	stdout_is_interactive = isatty(1);
+	if (stdout_is_interactive)
+	  w32cons_cls(GetStdHandle(STD_OUTPUT_HANDLE));
     }else{
       fprintf(stderr,"%s: Error: unknown option: %s\n", Argv0, z);
       fprintf(stderr,"Use -help for a list of options.\n");