In case anyone is interested, I just published a syntax extension I use for vim. It adds on to the default "haskell.vim" syntax file and enables some more advanced colouring. Here's the link to the github page, with visual examples: https://github.com/mwnx/flashy-haskell I rewrote the whole thing before publishing so there might be quite a few bugs due to a lack of real world testing, but I'll strive to fix any reported bugs rapidly. It also doesn't seek to completely and perfectly interpret Haskell's syntax. As a result, some of the more unusual syntactic constructs might not benefit from the extra colouring. -- mwnx GPG: AEC9 554B 07BD F60D 75A3 AF6A 44E8 E4D4 0312 C726