On Friday, February 6th, 2026 at 9:55 PM, luigi scarso <[email protected]>
wrote:
>
>
> On Fri, 6 Feb 2026 at 12:28, Udi Fogiel <[email protected]> wrote:
> > The fact that \vcenter does not accept a (b)dir and attr keywords
> > does make sense, but what more bother me is if the side effects of that,
> > i.e. setting the vlist direction as \bodydirection rather than
> > \mathdirection (which I find it odd for math typesetting), and not setting
> > \textdirection, \pardirection and \bodydirection inside the group (which is
> > a bit inconsistent), are desired.
> >
>
> I guess this isn't a new idea, but you can ask some free AI chat something
> like "In luatex, why doesn't \vcenter have the (b)dir attribute like \vbox?"
> and, once in context,
> "A Lua script that "monkey-patches" \vcenter to take a dir argument."
> At least you can have some fun coding.
Sure, but that still won't answer my question. Why the direction of a \vcenter
is \bodydirection and not \mathdirection, and why aren't \textdirection,
\bodydirection and \pardirection are not set inside its group, regardless of
the (b)dir attribute.
At least I'll have some fun :)
Udi
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