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Re: Fill column indicator functionality

From: Eli Zaretskii
Subject: Re: Fill column indicator functionality
Date: Tue, 12 Mar 2019 18:19:34 +0200

> Date: Tue, 12 Mar 2019 16:29:30 +0100
> From: Ergus <address@hidden>
> Cc: address@hidden
> Sorry for being so annoying.

Nothing to be sorry about.

> I tried:
>     if (!row->reversed_p)
>       {
>         while (glyph >= start
>                && (glyph->type == CHAR_GLYPH
>                    || glyph->type == STRETCH_GLYPH)
>                && NILP (glyph->object))
>           --glyph;
>       }
> But it didn't work. The behavior is the same: the whitespace is
> highlighted only when the line is crossed.

I guess at this point I'd need to see the code to help you more.

Alternatively, you could step with a debugger through the code of
highlight_trailing_whitespace and see why it isn't working.  It should
be something simple, I think.

> The other corner case I have is because in graphical mode the space for
> the dot is always reserved, so when the last character in the line is
> just before the line, the line is not drawn for that line.

Sorry, I don't understand: what is "the dot" in this context, and what
do you mean by "just before the line"?  There are too many "lines" in
this sentence, so I'm confused.

> In text mode I fixed this changing a while for a do while, but in
> graphical mode the approach is different.

Well, it sounds like again seeing the code should explain what I don't

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