Hi,
Doug wrote:
> There is one property of TeX (and HTML) that's worth emulating:
> recursive nesting. It's a challenge to the preprocessor model (eqn,
> tbl, pic), but one that deserves serious consideration. How about
> letting "preprocessors" be called by piping segments out and back, not
> only by piping in? (This is a standard facility of the sam editor.
> The line breaks in this email were set by piping out to fmt.)
vi(1) offers something similar with its ! command, e.g. !}fmt runs the
lines from here to the end of the paragraph -- } -- through fmt with the
output replacing the input.
Taking just one example, sometimes a tbl cell will want to constrain the
pic within it, other times be basing its size on the pic. In both cases
the .PS/.PE will be within the T{...T}. Can a crude workaround within a
linear pipeline be done with different .PS/.PE pairs being used and
extra commands in the pipeline switching them live as the ones pic looks
at this time?
... | switch +PS2 | pic | switch -PS2 +PS1 | tbl | pic | ...
Cheers, Ralph.
