Austin's Note

Usage

Wrap code blocks with <pre lang="LANGUAGE" line="1"> and </pre> where LANGUAGE is a GeSHi supported language syntax. See below for a full list of supported languages. The line attribute is optional.

Supported Languages

The following languages are supported in the lang attribute:

abap, actionscript, actionscript3, ada, apache, applescript, aptsources, asm, asp, autoit, bash, blitzbasic, bnf, boo, c, cmac, caddcl, cadlisp, cil, cfdg, cfm, cobol, cpp-qt, cpp, csharp, css, d, delphi, diff, div, dos, dot, eiffel, fortran, freebasic, genero, gettext, glsl, gml, bnuplot, groovy, haskell, html4strict, idl, ini, inno, io, java, java5, javascript, kixtart, klonec, klonecpp, latex, lisp, lotusformulas, lotusscript, lua, m68k, matlab, mirc, mpasm, mxml, mysql, nsis, objc, ocaml-brief, ocaml, oobas, oracle8, pascal, per, pic16, perl, php-brief, php, plsql, povray, powershell, progress, python, qbasic, rails, reg, robots, ruby, sas, scala, scheme, sdlbasic, smalltalk, smarty, sql, tcl, text, thinbasic, tsql, typoscript, vb, vbnet, verilog, vhdl, visualfoxpro, winbatch, xml, xorg_conf, xpp, z80

(Bold languages just highlight the more popular ones.)

Reference：http://wordpress.org/extend/plugins/wp-syntax/other_notes/