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[cpp.pre] Move paragraph introducing preprocessor to first #8355

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Oct 31, 2025
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[cpp.pre] Move paragraph introducing preprocessor to first #8355

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22 changes: 11 additions & 11 deletions source/preprocessor.tex
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Original file line number Diff line number Diff line change
Expand Up @@ -173,6 +173,17 @@
\descr{the new-line character}
\end{bnf}

\pnum
The implementation can
process and skip sections of source files conditionally,
include other source files,
import macros from header units,
and replace macros.
These capabilities are called
\defn{preprocessing},
because conceptually they occur
before translation of the resulting translation unit.

\pnum
A \defn{preprocessing directive} consists of a sequence of preprocessing tokens
that satisfies the following constraints:
Expand Down Expand Up @@ -304,17 +315,6 @@
or possibly other whitespace characters
in translation phase 3).

\pnum
The implementation can
process and skip sections of source files conditionally,
include other source files,
import macros from header units,
and replace macros.
These capabilities are called
\defn{preprocessing},
because conceptually they occur
before translation of the resulting translation unit.

\pnum
The preprocessing tokens within a preprocessing directive
are not subject to macro expansion unless otherwise stated.
Expand Down