There seems something very much amiss with \halign in later ConTeXt versions.

This typesets fine in PlainTeX and is an example taken from a textbook.

  \tabskip=1em\halign{%
  \hfil\it#\hfil&\hfil#\hfil&#&\hfil#\crA&B&C&D\cr}

Also in contextversion 2012.05.30 (from a TeXlive distribution).

But it fails at least in ConTeXt  ver: 2013.03.20 10:34 MKIV
and in ConTeXt  ver: 2013.04.16 12:08 MKIV beta
with the following error

! Only one # is allowed per tab.
system          > tex > error on line 5 in file fixedwidth.tex: Only one # is 
allowed per tab ...

 1     \starttext
 2     contextversion=\contextversion\par
 3     \tabskip=1em
 4     \halign{%
 5 >>  \hfil\it#\hfil&\hfil#\hfil&#&\hfil#\cr
 6     A&B&C&D\cr}
 7     \stoptext
l.5 \hfil\it#\hfil&\hfil#
                       \hfil&#&\hfil#\cr

Why? How primitive it may be, I would like to use \halign now and then.

Hans van der Meer



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