Currently I am trying to use <i>syntaxhighlighter</i> following http://blog.cartercole.com/2009/10/awesome-syntax-highlighting-made-easy.html
Usage issues (specific to <i>blogger</i>):
a)Difficulty in giving the clipboard path string. Blogger encodes it.(Currently using //<![CDATA[ <code> //]]> syntax to write the javascript code)
b)Copy to clipboard is not being shown.
c)If the syntax highlighted code is manually selected to be copied, then on pasting stray characters are being introduced. (for now I am suggesting usage of linux tr command to replace them on my blog).<p>Replacement to the syntax highlighter would also be appreciated.
As a sample problem try copy-pasting the code at http://pareshverma.blogspot.in/2012/02/datac-miller-rabin.html and running it directly.