workaround VTEs wide surrogate pair display bug.

lib/widget.js

@@ -2425,6 +2425,14 @@ Element.prototype.parseContent = function(noTags) {
       // double-width chars will eat the next char after render. create a
       // blank character after it so it doesn't eat the real next char.
       content = content.replace(unicode.chars.wide, '$1\x03');
+      // VTE cannot display double-width chars that are also
+      // surrogate pairs: It miscalculates the width of the chars.
+      if (this.screen.program.isVTE) {
+        // In reality we should only drop double-width surrogate pairs,
+        // but we don't have a regex for that yet.
+        // content = content.replace(unicode.chars.surrogateDoubleWidth, '?');
+        content = content.replace(unicode.chars.surrogate, '?');
+      }
     } else {
       // no double-width: replace them with question-marks.
       content = content.replace(unicode.chars.all, '??');

test/widget-eaw.js

@@ -93,6 +93,7 @@ lorem = lorem.replace(/e/gi, DOUBLE);
 //lorem = lorem.replace(/r/gi, JUAN);
 // NOTE: libvte breaks when trying to display
 // this surrogate pair double width character:
+// if (!~process.argv.indexOf('vte') && !screen.program.isVTE) {
 if (!~process.argv.indexOf('vte')) {
   lorem = lorem.replace(/a/gi, SURROGATE_DOUBLE);
 }