Enhancement Request: Eclipse Syntax Highlighting

As an IG Developer using Eclipse
I would like a simple text editor extension to edit FHIR Shorthand (FSH) files
with syntax highlighting
so that I can see where I've mispelled keywords or used incorrect formats while I'm editing FSH Files

Given a FSH File
When I launch it from Eclipse
Then it highlights Sushi Keywords and recognized terminal symbols and constructs

Given I'm editing a FSH File in the editor
When I request reformatting
Then it makes the file pretty

Given I'm editing a FSH File in the editor
When I insert a carriage return into a string
Then it reformats the string into multi-line format

Given I'm editing a FSH File in the editor
When I delete the last carriage return in a string
Then it reformats the string into single-line format

See http://www.ccs.neu.edu/home/lieber/courses/csu670/f05/project/pluginDevExample.pdf