[Haskell-cafe] Re: OK, so this VIM thing -- how do I make it actually work?

Rodrigo Queiro overdrigzed at gmail.com
Tue Jun 5 10:45:40 EDT 2007

Perhaps you could just highlight the small subset of LaTeX that is common in
.lhs files? This seems like it would be satisfactory in most cases.

On 05/06/07, Paul Moore <p.f.moore at gmail.com> wrote:
> On 05/06/07, Michael T. Richter <ttmrichter at gmail.com> wrote:
> >
> >
> > Oops.  I spoke too soon.  It works ... for about a third of the file.
> > It then loses its mind in the middle of a do-block (in a sizable chunk of
> > code) and doesn't regain it until the next code begin/end pairing ends.
> >
> There is a fix for this (:syn sync fromstart is the usual incantation that
> helps) but (as a Vim user) I take your point that Vim's highlighting is not
> as you want it out of the box, and that matters.
>  So, I guess I'm back to my original question: where can I find a decent
> > editor that can do syntax highlighting out of the box for literate Haskell?
> > (Or, alternatively, where can I find a syntax-highlighting editor I can
> > expand the syntax handling of on my own?)  VIM is broken out of the box and
> > if I'm going to mess around with syntax highlighting files, I'd at least
> > like to do it in an editor I'm likely to be comfortable in.
> >
> You need to take into account the fact that highlighting literate Haskell
> is hard, if you want it done completely right, because there are two
> entirely distinct sets of syntax (Haskell and LaTeX) being interspersed (and
> from the look of one of your examples, you use CPP syntax in places as
> well). That is never going to be easy to handle. If you were happy with the
> LaTeX being left unhighlighted, it wouldn't be too hard to handle. Equally,
> if you want the LaTeX highlighting with the Haskell unhighlighted, that's
> easy enough as well. It's the combination that's hard.
> So, you should probably:
> 1. Accept that you're going to have very few, if any, good options
> 2. Think about your priorities - if you have to give something up, what
> would hurt you least? (FWIW, if you're happy for the LaTeX to be left
> unhighlighted, setting lhs_markup="none" in Vim might be enough for you).
> Beyond that, I can't offer any suggestions - I use Vim and am happy with
> it, but I know it's limited when dealing with mixed-type files (HTML + CSS +
> JavaScript is another common case).
> Hope this helps,
> Paul.
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