handle dwidth characters.

lib/widget.js

@@ -2052,6 +2052,15 @@ Element.prototype._wrapContent = function(content, width) {
       }
     }
 
+    //for (i = 0; i < line.length; i++) {
+    //  if (isDwidth(line[i])) {
+    //    line = line.substring(0, i) + line[i] + '\0' + line.substring(i + 1);
+    //    i++;
+    //  }
+    //}
+
+    line = line.replace(dwidthChars, '$1\0');
+
     if (!wrap && line.length > width) {
       line = line.slice(0, width);
     }
@@ -2826,6 +2835,10 @@ Element.prototype.render = function() {
         }
       }
 
+      if (ch === '\0') {
+        continue;
+      }
+
       // Handle newlines.
       if (ch === '\t') ch = ' ';
       if (ch === '\n') {
@@ -5466,6 +5479,30 @@ function hsort(obj) {
   });
 }
 
+var dwidthChars = new RegExp('(['
+  + '\\uff01-\\uffbe'
+  + '\\uffc2-\\uffc7'
+  + '\\uffca-\\uffcf'
+  + '\\uffd2-\\uffd7'
+  + '\\uffda-\\uffdc'
+  + '\\uffe0-\\uffe6'
+  + '\\uffe8-\\uffee'
+  + '])', 'g');
+
+function isDwidthR(ch) {
+  return dwidthChars.test(ch);
+}
+
+function isDwidth(ch) {
+  return (ch >= '\uff01' && ch <= '\uffbe')
+      || (ch >= '\uffc2' && ch <= '\uffc7')
+      || (ch >= '\uffca' && ch <= '\uffcf')
+      || (ch >= '\uffd2' && ch <= '\uffd7')
+      || (ch >= '\uffda' && ch <= '\uffdc')
+      || (ch >= '\uffe0' && ch <= '\uffe6')
+      || (ch >= '\uffe8' && ch <= '\uffee');
+}
+
 /**
  * Expose
  */