[texhax] Strange alignment in memoir+gather
daleif at imf.au.dk
Thu Mar 25 14:32:39 CET 2010
Barbara Beeton wrote:
> On Thu, 25 Mar 2010, Lars Madsen wrote:
> Barbara Beeton wrote:
> > On Thu, 25 Mar 2010, Lars Madsen wrote:
> > Victor Ivrii wrote:
> > > On Wed, Mar 24, 2010 at 10:28 AM, Victor Ivrii <vivrii at gmail.com>
> > wrote:
> > > > This seems to be almost minimal example as effect is extremely
> > > > unstable and disappears as some parts of formula are removed. I
> > have
> > > > observed this effect before in some occasions but cannot figure
> > out
> > > > any patterns
> > > > The same effect with amsmath,
> > of course, mathtools loads amsmath, and gahter is not touched by
> > mathtools
> > it seems to be memoir interacting with something in amsmath
> > Do not know what, yet.
> > i've confirmed that the first example
> > has the same effect with amsart, so it's
> > undoubtedly a problem in amsmath itself.
> > it's been put on our bugs list, but will
> > likely not be debugged (by us) real soon.
> > if anyone comes up with solid hints,
> > please send them to the attention of
> > tech-support at ams.org
> > thanks.
> > -- bb
> I don't think it is amsmath, as the effect (the odd centering) goes away if
> you replace memoir with book
> but if you replace memoir with either article
> or book and change the options to [11pt,leqno]
> both examples go haywire. so your test isn't
> victor said the problem was both fragile and
> intermittent. since i've managed to replicate
> the problem with three quite unrelated
> document classes, i'm convinced that amsmath
> is the place to start digging.
> obviously it's a bad interaction with the
> document class, whatever that may be, and
> apparently is more likely with left-hand
> equation numbers. i haven't yet found a case
> that fails when \tag isn't used, but i suspect
> that with a long enough "natural" equation
> number (subsubsection + high counter value)
> that would change. my hunch is that it is
> a bad interaction between the length of the
> eqno and the measuring routine. there have
> been other bugs related to the measuring
> routine, most allegedly solved, and all
> nearly unpredictably infrequent.
> -- bb
you're right, I just made sure that I tested with the same widths, and
the problem went away.
I think Morten H\o gholm may have mentioned this problem at one time.
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