On 18-5-2011 4:18, Aditya Mahajan wrote:
Simpler example:
\def\A{\halign \bgroup ## \crcr}
\unexpanded\def\B{\crcr\egroup}
\def\C{\crcr\egroup}
\starttext
\ruledvbox{\A A \cr B \cr \B}
\ruledvbox{\A A \cr B \cr \C}
\ruledvbox{\A A \cr B \cr \relax \C}
\stoptext
I wonder what the rationale is behind this ... when we redo the matrix
code we can prune such empty rows in lua. I always thought that \crcr
was more clever.
Hans
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