[TxMt] folding patterns and comments

[Jeroen van der Ham]

Christopher Creutzig wrote:
>  Thanks, I thought of these and dismissed them – I'd really prefer
> 
> print(Unquoted, "// ".if a < 0 then a
>                       else a^2
>                       end);
> 
> to work.  What's more,
> 
> /* This should be done if and only
>    if we have a solution.  But then ...
>  */
> 
> is a comment as well.  I think I should really use TM's wonderful scope
> selectors.  Just wanted to check what others are doing, since the
> problem is not restricted to MuPAD and I couldn't find a workaround or
> fix in the bundles I peeked into.

I'm not completely sure, but I don't think you can use scope selectors 
when defining folds.
But note that the if occuring in the comment might match the 
foldstartmarker, but there would have to be a matching foldstopmarker at 
the same indent level to make it a fold. So I don't think that it would 
show up as a fold.

I think that if you really want this to work properly, you'll have to 
expand the match more to not only match "if", but also the pattern after it.

Jeroen.