2.7.4 ⁂General Iteration with TeX's \loop
If you want a more general purpose way of repeating a block of code, you can use
\loop ⟨code⟩\if… \repeat
This repeats ⟨code⟩ while the given condition is true. The
\if… part should be one of TeX's conditionals, such
as \ifnum, without the terminating \fi.
Example:
For example, to print the numbers from 1 to 10:
This produces:
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