Re: region_highlight cancels styles set in zle_highlight

[Daniel Shahaf <d.s@daniel.shahaf.name>]

Peter Stephenson wrote on Mon, Sep 07, 2015 at 09:48:56 +0100:
> On Mon, 7 Sep 2015 02:08:14 +0000
> Daniel Shahaf <d.s@daniel.shahaf.name> wrote:
> > Peter Stephenson wrote on Sun, Sep 06, 2015 at 18:22:30 +0100:
> > > On Sat, 5 Sep 2015 10:44:49 +0000
> > > Daniel Shahaf <d.s@daniel.shahaf.name> wrote:
> > > > How do $zle_highlight and $region_highlight interact?  Which one takes
> > > > precedence if a certain byte range is covered by both?
> > > 
> > > The special forms of highlight (the ones that apply to regions, so not,
> > > for example, unprintable characters) are treated as the initial set of
> > > entries in the array of highlights to apply, with any user-specified
> > > ones in region_highlight following in order, with later values
> > > overriding earlier ones.
> > 
> > Thanks.  Patch to doc this:
> 
> Thanks, that's useful.

Committed with a small tweak to also list 'suffix' in the list of
zle_highlight contexts that apply prior to region_highlight.

> By the way, the code for this is fairly localised in
> Src/Zle/zle_refresh.c, with the decisions made in the chunk of code at
> the top of character loop in singlerefresh() after the comment
> "Calculate attributes based on region": the special and user-defined
> attributes have been coalesced into the array region_highlights at this
> point.  So if there's a good argument for alternative or variant
> behaviour it shouldn't be too difficult, by ZLE standards.

Thanks for the pointer, it was useful.

Cheers,

Daniel