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P2223R2 Trimming whitespaces before line splicing #4666

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Jun 15, 2021
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P2223R2 Trimming whitespaces before line splicing #4666

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9 changes: 5 additions & 4 deletions source/lex.tex
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Original file line number Diff line number Diff line change
Expand Up @@ -86,17 +86,18 @@

\item
\indextext{line splicing}%
Each instance of a backslash character (\textbackslash)
immediately followed by a new-line character is deleted, splicing
Each sequence of a backslash character (\textbackslash)
immediately followed by
zero or more whitespace characters other than new-line followed by
a new-line character is deleted, splicing
physical source lines to form logical source lines. Only the last
backslash on any physical source line shall be eligible for being part
of such a splice.
Except for splices reverted in a raw string literal, if a splice results in
a character sequence that matches the
syntax of a \grammarterm{universal-character-name}, the behavior is
undefined. A source file that is not empty and that does not end in a new-line
character, or that ends in a new-line character immediately preceded by a
backslash character before any such splicing takes place,
character, or that ends in a splice,
shall be processed as if an additional new-line character were appended
to the file.

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