Re: [NTG-context] \dorecurse and \recurselevel in Natural Tables

6 Mar 2009

      Hi Aditya,

Happy luaTeXing. Great summary.

Willi

On Mar 6, 2009, at 4:05 AM, Aditya Mahajan wrote:
...
On Thu, 5 Mar 2009, luigi scarso wrote:
...
On Thu, Mar 5, 2009 at 12:09 PM, Wolfgang Schuster
 wrote:
...
Am 05.03.2009 um 01:17 schrieb luigi scarso:
...
\starttext
%%% TeX version
\bTABLE
\dorecurse{5}
{\bTR\expandafter \bTD \recurselevel. \eTD\expandafter
       \bTD \recurselevel  \eTD\eTR}
\eTABLE
\dorecurse{2}
{\recurselevel. \recurselevel\crlf}
And you think it's a good idea to use \expandafter in your document?
TeX  version, not context ... :)
btw
\expandafer is not so bad, if used moderatly .
...
\expanded is the tool for users to get this result without knowledge
about TeX internals and expansion, this is from core-ntb:
% permits \expanded{\bTD ... \eTD}
\unexpanded\def\eTR{}
\unexpanded\def\eTD{}
\unexpanded\def\eTH{}
\unexpanded\def\eTN{}
yes, of course one need to know about \expandafter... so is not so  
different .
But it's context style.
...
...
%%% luatex version
\startluacode
  tprint = function(s) tex.sprint(tex.ctxcatcodes,s) end
  tprint('\\bTABLE')
  for j = 1,5 do
      tprint('\\bTR')
      tprint('\\bTD' .. j .. '.' .. '\\eTD' .. '\\bTD' .. j .. '\ 
\eTD')
      tprint('\\eTR')
  end
  tprint('\\eTABLE')
\stopluacode
\stoptext
Nice solution and real alternative for package writers to avoid  
\expandafter
and \expanded but nothing for a normal user, I should keep this  
in my mind.
Are you sure ?
What is a normal user ?
As soon as you use \dorecurse , you become a programmer .
And sooner or later, everyone become a programmer, because it's
impossible to write a format that satisfied
all your needs .
My summary of this thread:
http://randomdeterminism.wordpress.com/2009/03/05/tex-programming- 
the-past-the-present-and-the-future/
Aditya________________________________________________________________ 
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Re: [NTG-context] \dorecurse and \recurselevel in Natural Tables

Willi Egger