File: unhide_constant.doc

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\DOC unhide_constant

\TYPE {unhide_constant : (string -> void)}

\SYNOPSIS
Restores recognition of a constant by the quotation parser.

\DESCRIBE
A call {unhide_constant `c`}, where {c} is a hidden constant, will unhide the
constant, that is, will make the quotation parser recognize it as such rather
than parsing it as a variable. It reverses the effect of the call
{hide_constant name}.

\FAILURE
Fails unless the given name is a hidden constant in the current theory.

\COMMENTS
The hiding of a constant only affects the quotation parser; the constant is
still there in a theory, and may not be redefined.

\SEEALSO
hide_constant.

\ENDDOC