[config.tex] A macro to denote last core chapter (cplusplus#7191)

Author: AlisdairM

source/config.tex

@@ -8,6 +8,9 @@
 %% Release date
 \newcommand{\reldate}{\today}
 
+%% Core chapters
+\newcommand{\lastcorechapter}{cpp}
+
 %% Library chapters
 \newcommand{\firstlibchapter}{support}
 \newcommand{\lastlibchapter}{exec}

source/expressions.tex

@@ -7552,7 +7552,7 @@
 
 \item
 an operation that would have undefined or erroneous behavior
-as specified in \ref{intro} through \ref{cpp},
+as specified in \ref{intro} through \ref{\lastcorechapter},
 excluding \ref{dcl.attr.assume} and \ref{dcl.attr.noreturn};
 \begin{footnote}
 This includes,

source/intro.tex

@@ -256,7 +256,7 @@
 Implementations are allowed, but not required,
 to diagnose it\iref{intro.compliance.general}.
 Evaluation of a constant expression\iref{expr.const}
-never exhibits behavior specified as erroneous in \ref{intro} through \ref{cpp}.
+never exhibits behavior specified as erroneous in \ref{intro} through \ref{\lastcorechapter}.
 \end{defnote}
 
 \definition{expression-equivalent}{defns.expression.equivalent}
@@ -644,7 +644,7 @@
 issuance of a diagnostic message). Many incorrect program constructs do
 not engender undefined behavior; they are required to be diagnosed.
 Evaluation of a constant expression\iref{expr.const} never exhibits behavior explicitly
-specified as undefined in \ref{intro} through \ref{cpp}.
+specified as undefined in \ref{intro} through \ref{\lastcorechapter}.
 \end{defnote}
 
 \indexdefn{behavior!unspecified}%
@@ -808,7 +808,7 @@
 supports all the facilities described in this document, while
 a freestanding implementation
 supports the entire \Cpp{} language
-described in \ref{lex} through \ref{cpp} and
+described in \ref{lex} through \ref{\lastcorechapter} and
 the subset of the library facilities described in \ref{compliance}.
 
 \pnum
@@ -958,7 +958,7 @@
 \pnum
 \indextext{standard!structure of|(}%
 \indextext{standard!structure of}%
-\ref{lex} through \ref{cpp} describe the \Cpp{} programming
+\ref{lex} through \ref{\lastcorechapter} describe the \Cpp{} programming
 language. That description includes detailed syntactic specifications in
 a form described in~\ref{syntax}. For convenience, \ref{gram}
 repeats all such syntactic specifications.