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Explain octal escapes. Fixes #542226.

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Martin v. Löwis 2002-04-11 12:24:12 +00:00
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Doc/lib/libre.tex
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@ -373,11 +373,9 @@ also accepted by the regular expression parser:
\\ \\
\end{verbatim} \end{verbatim}
Note that octal escapes are not included. While the parser can Octal escapes are included in a limited form: If the first digit is a
attempt to determine whether a character is being specified by it's 0, or if there are three octal digits, it is considered an octal
ordinal value expressed in octal, doing so yields an expression which escape. Otherwise, it is a group reference.
is relatively difficult to maintain, as the same syntax is used to
refer to numbered groups.
\subsection{Matching vs. Searching \label{matching-searching}} \subsection{Matching vs. Searching \label{matching-searching}}