Improve syntax highlighting for here-doc lines with parameters

[de-jcup]

# Commands might also follow the heredoc string delimiter 
# and you would probably want to have syntax highlighting there, e.g.
## -- sorry currently not working because of the standard token handling
## in eclipse. Not easy to implement... maybe in future
cat << EOF | grep -i TargetString --color
asdf
EOF

Are currently shown as

the syntax highlighting of the grep command is not shown.

It's because of the standard token handling in eclipse.

Maybe its possible to support here syntax highlighting as well.