🚀 go-pugleaf

There were a couple of posts on this mornings c.t.t digest concerning
purported incompatibilities between TeX and LaTeX.  As far as I have
determined, there are about a dozen plain TeX commands that are omitted
from LaTeX.  There is also one direct incompatibility, namely that
\centering is defined differently from that of plain.  The plain
\centering macro is called \@centering in LaTeX.  Of the omitted ones,
the only ones I actually miss are \eqalign (note the spelling) and
\eqalignno.  I have simply copied the definitions into my macros
files (careful: the latter uses \centering and this has to be
replaced by \@centering) and use them.

The remaining missing plain macros are replaced by better ones in LaTeX,
but they can be put back in.

Michael Barr