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This might allow the ocaml compiler to not link these modules when
--inspection is off.

According to the tiny test, the two encodings are equivalent.

Removed the old [production_defs].
Renamed [production_defs2] to [rhs].

According to a very limited demo in calc-incremental, this seems to work.

It is a more compact encoding of the table of productions.

It is not useful, but should not cost much, and is more regular.

We simply associate an empty right-hand side with the start productions.

was no longer needed.

composed with the function [nonterminal].

symbol to its representation as an [xsymbol].

symbol to an [xsymbol].

I had forgotten it until now.

This should fix an old bug where the user prelude could hide [Error].

Things are reasonably clean now.

  to support --inspection.
The signature IncrementalEngine.INSPECTION documents what the user sees.
The signature TableFormat.INSPECTION_TABLES documents what we generate.
The functor TableInterpreter.MakeInspection bridges the gap.

[Error] and of the type [token] by defining an internal submodule and
including it where appropriate (twice).

The closing delimiter in records and arrays is now correctly indented.