Not sure exactly what you are looking for in an rhtml plugin, but Radrails has rhtml support (syntax highlighting, macros (templates), etc).
Window -> Preferences -> Rails -> Editors -> RHTML Editor
Not sure exactly what you are looking for in an rhtml plugin, but Radrails has rhtml support (syntax highlighting, macros (templates), etc).
Window -> Preferences -> Rails -> Editors -> RHTML Editor