[SVN] New trend in SH

[Allan Odgaard]

Seeing the recent keyword lists by Eric and Chris makes me think that 
associating style with keyword(-pattern) alone will accomplish 90% of 
what I wanted to do with the CSS-inspired system, and it's rather easy 
to do an editor for this.

So me thinks I should do this as first step for probably beta 4, since 
I think I can do it in less than a day (yeah, I know I don't have the 
best track record for time-estimates ;) ) -- the full system will just 
be a superset of keyword-matching, so as of such, the user 
contributions with regard to style-sheets and syntaxes should remain 
compatible in the future.

The only limitations I see with keyword matching compared to the 
current system is associating different styles to the same languages 
(e.g. depending on whether or not it is embedded or hosts an embedded 
language).

To remedy this I can just let the styles in the syntax files take 
precedence, so to obtain the above, one would just leave the styles in 
the syntax files.

Another issue is that I think the root element of each file should be 
named “language.<something>” or similar, since there needs to be a way 
to set the default foreground/background colors. Either this should 
just be implicit, or we probably need to also introduce a displayName 
key for the menu.

Comments?