Re: Weird background colors in autogenerated index

["Jan Tosovsky" <j.tosovsky@email.cz>]

On 2016-04-10 Hans Hagen wrote:
> On 4/10/2016 11:26 PM, Pablo Rodriguez wrote:
> > On 04/10/2016 11:00 PM, Jan Tosovsky wrote:
> >> On 2016-04-10 Hans Hagen wrote:
> >>> On 4/9/2016 11:22 PM, Jan Tosovsky wrote:
> >>>>
> >>>> since LuaTeXt 0.81 my back-of-the-book index (register) is
> >>>> with generated strange background colors. The index title
> >>>> is typeset in yellowish background and the left column of
> >>>> the last index page has a blue background, see the attachment.
> >>>>
> >>>> ... It was fine in the version 0.80.
> >>>
> >>> no example
> >
> > here you have the minimal sample:
> >
> >    \showgrid
> >    \starttext
> >    a\index{b}
> >    \completeindex
> >    \stoptext
> >
> > Comment the first line and colors background colors will disappear.

a good catch, Pablo, thanks.

> indeed, it's tracing related (no bug)

My idea is to have a single PDF source to showcase some ConTeXt features, where displaying the grid is handy, yet allow disabling the grid on demand. 

So any visible \showgrid related issues, which cannot be switched off together with the grid layer, are unacceptable ;-)

Is there any chance to improve this a bit?

Thanks, Jan

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