I exported some html with defaut style and a javascript src block:
```
#+BEGIN_SRC javascript
var x = {}
#+END_SRC
```
The exported html contains the default styles and pseudo-elements for
following languages only:
```
pre.src:hover:before { display: inline;} pre.src-sh:before {
content: 'sh'; } pre.src-bash:before { content: 'sh'; }
pre.src-emacs-lisp:before { content: 'Emacs Lisp'; } pre.src-R:before
{ content: 'R'; } pre.src-perl:before { content: 'Perl'; }
pre.src-java:before { content: 'Java'; } pre.src-sql:before {
content: 'SQL'; }
```
Why is javascript not included? I know I could write the
`pre.src-javascript:before { content: 'Javascript'; } myself.
Syntax-highlighting looks fine but the upper right label on hover is
missing.
Thanks!