Background cells in tables?

[Gilbert van den Dobbelsteen <gilbert@panter.soci.aau.dk>]

Perhaps this was discussed before, but I need to do something with tables
and backgrounds (colors and stuff). But it didn't work! I used a simple
example from core-tab:

\starttabel[|c|c|c|]
\HL
\BC      \BC      \BL         \SR
\VL test \VL test \VL test \VL\SR
\HL
\stoptabel

This doesn't work!. In fact I need the longtables because they are bigger
than 1 page, and I need alternating backgrounds (could use the natural
tables for the latter, but it doesn't do the first). Well anyway, here's the
log:

This is pdfeTeX, Version 3.14159-14h-pretest-20010210-2.1 (Web2c 7.3.3.1)
(format=cont-nl 2002.8.9)  17 SEP 2002 09:09
entering extended mode
**&cont-nl t.tex
(./t.tex{c:/tex/texmf/pdftex/config/pdftex.cfg}

ConTeXt  ver: 2002.7.26  fmt: 2002.8.9  int: dutch  mes: dutch

taal           : taal nl is actief
<protectionstate 0>
systeem        : cont-new geladen
(c:/tex/texmf/tex/context/base/cont-new.tex
systems        : beware: some patches loaded from cont-new.tex!
)
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(c:/tex/texmf/tex/context/base/cont-old.tex
loading        : Context Old Macros
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loading        : Context File Synonyms
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korps          : 12pt rm wordt geladen
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8:2-it-2
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specials       : tex,postscript,rokicki geladen
\openout2 = `t.tui'.

systeem        : t.top geladen
(./t.top
specials       : definitiefile tpd wordt geladen
(c:/tex/texmf/tex/context/base/spec-tpd.tex
specials       : definitiefile fdf wordt geladen
(c:/tex/texmf/tex/context/base/spec-fdf.tex <unprotect 3> <unprotect 4>
system (E-TEX) : [line 1783] \ifcsname
<unprotect 5> <protect 5> <protect 4> <protect 3>)
specials       : fdf geladen
<unprotect 3> <protect 3>)
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)
\openout0 = `mpgraph.mp'.

\openout0 = `mprun.mp'.

\openout0 = `mpgraph.mp'.

\openout0 = `mprun.mp'.

pdftex         : needs map file: original-context-symbol.map
pdftex         : needs map file: pl0-ams-cmr.map
pdftex         : needs map file: original-vogel-symbol.map
kleur          : systeem rgb is globaal actief
(./t.tuo) (./t.tuo) (./t.tuo) (./t.tuo) (./t.tuo) (./t.tuo) (./t.tuo)
(./t.tuo)
(./t.tuo) (./t.tuo) (./t.tuo) (./t.tuo) (./t.tuo)
systems        : begin file t at line 3
! Missing } inserted.
<inserted text>
                }
<to be read again>
                   \endtemplate
\next ->&
         \normalTABLElongrule &
\dodocomplexTableGL ...LEmultirule {#3}}\fi \next
                                                  \doPostTableGL #2
\TABLEgrayline ...\BC \complexTableRASTER [1,0.95]
                                                  \SR
\nextTABLEgrayline ...mn 0}\unskip \TABLEgrayline
                                                  \TABLEendBCL
\TABLEnoalign...
...
l.10 \VL
         test \VL test \VL test \VL\SR
? x

Here is how much of TeX's memory you used:
 701 strings out of 35052
 10296 string characters out of 523437
 385103 words of memory out of 1500001
 29090 multiletter control sequences out of 10000+50000
 9049 words of font info for 28 fonts, out of 200000 for 1000
 56 hyphenation exceptions out of 1000
 31i,7n,25p,189b,406s stack positions out of 5000i,500n,5000p,200000b,40000s
No pages of output.