On 5/9/2025 5:41 AM, Pablo Rodriguez via ntg-context wrote:
On 5/8/25 21:02, Hans Hagen via ntg-context wrote:
[...]
These % after the comparison make tex scan on for the end of a number (a
\relax of space ends the scan). You can do this:
Many thanks for your reply, Hans.
With your sample, I see that some crazy things (such as the following)
are possible:
\starttext
\dorecurse{2}{%
\dorecurse{3}{%
\dorecurse{4}{%
\dorecurse{5}{%
\dorecurse{6}{%
#1:##1:####1:########1:################1 }\\
}\blank[.25st]}\blank[.5st]}\blank[1st]}
\stoptext
I mean, accessing different levels of recursion in nested loops.
Being a very special trick for really corner cases, is there something
to be considered when using it?
only imagination ... try #2 ##2 etc .. these #1 things are basically
references to macro arguments
\dorecurse{1}{%
\dorecurse{3}{%
\dorecurse{3}{%
\dorecurse{3}{%
\dorecurse{3}{%
% #1:##1:####1:########1:################1
#2:##2:####2:########2:################2
}\\
}
\blank[.25st]
}
\blank[.5st]
}
\blank[1st]
}
\page
or go wild with
\localcontrolledrepeat 1 {
\localcontrolledrepeat 3 {
\localcontrolledrepeat 3 {
\localcontrolledrepeat 3 {
\localcontrolledrepeat 3 {
\the\previousloopiterator4:%
\the\previousloopiterator3:%
\the\previousloopiterator2:%
\the\previousloopiterator1:%
\the\previousloopiterator0 %
}\\
}
\blank[.25st]
}
\blank[.5st]
}
\blank[1st]
}
\page
or maybe:
\edef\foo{%
\expandedrepeat 1 {
\expandedrepeat 3 {
\expandedrepeat 3 {
\expandedrepeat 3 {
\expandedrepeat 3 {
\the\previousloopiterator4:%
\the\previousloopiterator3:%
\the\previousloopiterator2:%
\the\previousloopiterator1:%
\the\previousloopiterator0 %
}\\
}
\blank[.25st]
}
\blank[.5st]
}
\blank[1st]
}
}
\foo
\meaningfull\foo
enough in there for a rainy day
Hans
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Hans Hagen | PRAGMA ADE
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