console UTF-8 fixes (fix)
[sfrench/cifs-2.6.git] / drivers / char / vt.c
index bbd9fc412877a035d7ee13154361836e23b5c3fa..6650ae1c088f05d132325c1f64cffa7a255f4851 100644 (file)
@@ -1956,7 +1956,7 @@ char con_buf[CON_BUF_SIZE];
 DEFINE_MUTEX(con_buf_mtx);
 
 /* is_double_width() is based on the wcwidth() implementation by
- * Markus Kuhn -- 2003-05-20 (Unicode 4.0)
+ * Markus Kuhn -- 2007-05-26 (Unicode 5.0)
  * Latest version: http://www.cl.cam.ac.uk/~mgk25/ucs/wcwidth.c
  */
 struct interval {
@@ -1988,8 +1988,8 @@ static int is_double_width(uint32_t ucs)
        static const struct interval double_width[] = {
                { 0x1100, 0x115F }, { 0x2329, 0x232A }, { 0x2E80, 0x303E },
                { 0x3040, 0xA4CF }, { 0xAC00, 0xD7A3 }, { 0xF900, 0xFAFF },
-               { 0xFE30, 0xFE6F }, { 0xFF00, 0xFF60 }, { 0xFFE0, 0xFFE6 },
-               { 0x20000, 0x2FFFD }, { 0x30000, 0x3FFFD }
+               { 0xFE10, 0xFE19 }, { 0xFE30, 0xFE6F }, { 0xFF00, 0xFF60 },
+               { 0xFFE0, 0xFFE6 }, { 0x20000, 0x2FFFD }, { 0x30000, 0x3FFFD }
        };
        return bisearch(ucs, double_width,
                sizeof(double_width) / sizeof(*double_width) - 1);
@@ -2187,9 +2187,12 @@ rescan_last_byte:
                                    continue; /* nothing to display */
                                }
                                /* Glyph not found */
-                               if (!(vc->vc_utf && !vc->vc_disp_ctrl) && !(c & ~charmask)) {
+                               if ((!(vc->vc_utf && !vc->vc_disp_ctrl) || c < 128) && !(c & ~charmask)) {
                                    /* In legacy mode use the glyph we get by a 1:1 mapping.
-                                      This would make absolutely no sense with Unicode in mind. */
+                                      This would make absolutely no sense with Unicode in mind,
+                                      but do this for ASCII characters since a font may lack
+                                      Unicode mapping info and we don't want to end up with
+                                      having question marks only. */
                                    tc = c;
                                } else {
                                    /* Display U+FFFD. If it's not found, display an inverse question mark. */
@@ -2213,6 +2216,7 @@ rescan_last_byte:
                                } else {
                                        vc_attr = ((vc->vc_attr) & 0x88) | (((vc->vc_attr) & 0x70) >> 4) | (((vc->vc_attr) & 0x07) << 4);
                                }
+                               FLUSH
                        }
 
                        while (1) {
@@ -2246,6 +2250,10 @@ rescan_last_byte:
                                if (tc < 0) tc = ' ';
                        }
 
+                       if (inverse) {
+                               FLUSH
+                       }
+
                        if (rescan) {
                                rescan = 0;
                                inverse = 0;