Hi Richard,
This is a good idea, I too frequently find myself splitting code blocks.
How about this following alternative implementation which should be
smart enough to notice if it is inside of a code block, and should work
across any code block type.
--8---cut
I often find myself chopping a large source code block into smaller
entities with their own notes, tags and comments etc. This small utility
facilitates that by wrapping the current region with org entry markers
and src code delimiters. It assumes you are in a currently src block.