Remember to cover the basics, that is, what you expected to happen and
what in fact did happen. You don't know how to make a good report? See
http://orgmode.org/manual/Feedback.html#Feedback
Your bug report will be posted to the Org-mode mailing list.
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In the file "ox-html.el", the following bit of CSS displays the source
code block language's name on hover:
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'; }
Org supports far more languages than this. In Section 14.7 of the Org
manual, the following languages are listed (formatting is screwed up):
Language Identifier Language Identifier
Asymptote asymptote Awk awk
Emacs Calc calc C C
C++ C++ Clojure clojure
CSS css ditaa ditaa
Graphviz dot Emacs Lisp emacs-lisp
gnuplot gnuplot Haskell haskell
Java java
Javascript js LaTeX latex
Ledger ledger Lisp lisp
Lilypond lilypond MATLAB matlab
Mscgen mscgen Objective Caml ocaml
Octave octave Org mode org
Oz oz Perl perl
Plantuml plantuml Python python
R R Ruby ruby
Sass sass Scheme scheme
GNU Screen screen shell sh
SQL sql SQLite sqlite
"ox-html.el" should support at least all the languages that Org mode supports by default.
Emacs : GNU Emacs 24.5.1 (i686-pc-mingw32)
of 2015-04-11 on LEG570
Package: Org-mode version 8.2.10 (release_8.2.10 @ c:/Users/txiong/emacs-24=
.5/share/emacs/24.5/lisp/org/)