Mathjax: \overbrace broken in SVG output

[dpvc]

Use of \overbrace causes an error (getVariant not defined). This is due to not passing the variant name to unicodeChars() in the placeChar() method.

See the MathJax User's Forum post.

[dainiak]

"not\equiv" failed in SVG output in MJ 3.0.5
Is that the same issue there?

[dpvc]

@dainiak, yes, it is the same issue. You can use

<script>
    MathJax = {
      startup: {
        ready() {
          if (MathJax.version === '3.0.5') {
            const SVGWrapper = MathJax._.output.svg.Wrapper.SVGWrapper;
            const CommonWrapper = SVGWrapper.prototype.__proto__;
            SVGWrapper.prototype.unicodeChars = function (text, variant) {
              if (!variant) variant = this.variant || 'normal';
              return CommonWrapper.unicodeChars.call(this, text, variant);
            }
          }
          MathJax.startup.defaultReady();
        }
      }
    };
</script>

as a work-around until the next release.

[dpvc]

Fixed in v3.1 released today.