% manual page source format generated by PolyglotMan v3.0.9,
-% available via anonymous ftp from ftp.cs.berkeley.edu:/ucb/people/phelps/tcltk/rman.tar.Z
+% available from http://polyglotman.sourceforge.net/
\section{Syntax of the builtin regular expression library}\label{wxresyn}
\helpref{wxRegEx}{wxregex}
-\subsection{Different Flavors of REs}
+\subsection{Different Flavors of REs}\label{differentflavors}
\helpref{Syntax of the builtin regular expression library}{wxresyn}
they will be discussed at the \helpref{end}{wxresynbre}. POSIX EREs are almost an exact subset
of AREs. Features of AREs that are not present in EREs will be indicated.
-\subsection{Regular Expression Syntax}
+\subsection{Regular Expression Syntax}\label{resyntax}
\helpref{Syntax of the builtin regular expression library}{wxresyn}
some more constraints are described later, under \helpref{Escapes}{wxresynescapes}.
\begin{twocollist}\twocolwidtha{4cm}
-\twocolitem{{\bf $^$}}{matches at the beginning of a line}
+\twocolitem{{\bf \caret}}{matches at the beginning of a line}
\twocolitem{{\bf \$}}{matches at the end of a line}
\twocolitem{{\bf (?=re)}}{{\it positive lookahead}
(AREs only), matches at any point where a substring matching {\it re} begins}
A {\it bracket expression} is a list
of characters enclosed in `{\bf $[]$}'. It normally matches any single character from
-the list (but see below). If the list begins with `{\bf $^$}', it matches any single
+the list (but see below). If the list begins with `{\bf \caret}', it matches any single
character (but see below) {\it not} from the rest of the list.
If two characters
To include a literal {\bf $]$} or {\bf -} in the
list, the simplest method is to enclose it in {\bf $[.$} and {\bf $.]$} to make it a collating
element (see below). Alternatively, make it the first character (following
-a possible `{\bf $^$}'), or (AREs only) precede it with `{\bf $\backslash$}'.
+a possible `{\bf \caret}'), or (AREs only) precede it with `{\bf $\backslash$}'.
Alternatively, for `{\bf -}', make
it the last character, or the second endpoint of a range. To use a literal
{\bf -} as the first endpoint of a range, make it a collating element or (AREs
%The sequence is a single element of the bracket
%expression's list. A bracket expression in a locale that has multi-character
%collating elements can thus match more than one character. So (insidiously),
-%a bracket expression that starts with {\bf $^$} can match multi-character collating
+%a bracket expression that starts with {\bf \caret} can match multi-character collating
%elements even if none of them appear in the bracket expression! ({\it Note:}
%Tcl currently has no multi-character collating elements. This information
%is only for illustration.)
%(If there are
%no other equivalent collating elements, the treatment is as if the enclosing
%delimiters were `{\bf $[.$}' and `{\bf $.]$}'.) For example, if {\bf o}
-%and {\bf $^$} are the members of an
-%equivalence class, then `{\bf $[[$=o=$]]$}', `{\bf $[[$=$^$=$]]$}',
+%and {\bf \caret} are the members of an
+%equivalence class, then `{\bf $[[$=o=$]]$}', `{\bf $[[$=\caret=$]]$}',
%and `{\bf $[o^]$}' are all synonymous.
An equivalence class may not be an endpoint of a range.
\begin{twocollist}\twocolwidtha{4cm}
\twocolitem{{\bf $\backslash$A}}{matches only at the beginning of the string
(see \helpref{Matching}{wxresynmatching}, below,
-for how this differs from `{\bf $^$}')}
+for how this differs from `{\bf \caret}')}
\twocolitem{{\bf $\backslash$m}}{matches only at the beginning of a word}
\twocolitem{{\bf $\backslash$M}}{matches only at the end of a word}
\twocolitem{{\bf $\backslash$y}}{matches only at the beginning or end of a word}
(i.e. the number is in the legal range for a back reference), and otherwise
is taken as octal.
-\subsection{Metasyntax}
+\subsection{Metasyntax}\label{remetasyntax}
\helpref{Syntax of the builtin regular expression library}{wxresyn}
bracket expression, so that {\bf $[x]$} becomes {\bf $[xX]$} and {\bf $[^x]$} becomes `{\bf $[^xX]$}'.
If newline-sensitive
-matching is specified, {\bf .} and bracket expressions using {\bf $^$} will never match
+matching is specified, {\bf .} and bracket expressions using {\bf \caret} will never match
the newline character (so that matches will never cross newlines unless
-the RE explicitly arranges it) and {\bf $^$} and {\bf \$} will match the empty string after
+the RE explicitly arranges it) and {\bf \caret} and {\bf \$} will match the empty string after
and before a newline respectively, in addition to matching at beginning
and end of string respectively. ARE {\bf $\backslash$A} and {\bf $\backslash$Z} continue to match beginning
or end of string {\it only}.
If partial newline-sensitive matching is specified,
this affects {\bf .} and bracket expressions as with newline-sensitive matching,
-but not {\bf $^$} and `{\bf \$}'.
+but not {\bf \caret} and `{\bf \$}'.
If inverse partial newline-sensitive matching is specified,
-this affects {\bf $^$} and {\bf \$} as with newline-sensitive matching, but not {\bf .} and bracket
+this affects {\bf \caret} and {\bf \$} as with newline-sensitive matching, but not {\bf .} and bracket
expressions. This isn't very useful but is provided for symmetry.
-\subsection{Limits And Compatibility}
+\subsection{Limits And Compatibility}\label{relimits}
\helpref{Syntax of the builtin regular expression library}{wxresyn}
are {\bf $\backslash$\{} and `{\bf $\backslash$\}}', with {\bf \{} and
{\bf \}} by themselves ordinary characters. The parentheses for nested subexpressions
are {\bf $\backslash$(} and `{\bf $\backslash$)}', with {\bf (} and {\bf )} by themselves
-ordinary characters. {\bf $^$} is an ordinary
+ordinary characters. {\bf \caret} is an ordinary
character except at the beginning of the RE or the beginning of a parenthesized
subexpression, {\bf \$} is an ordinary character except at the end of the RE or
the end of a parenthesized subexpression, and {\bf *} is an ordinary character
if it appears at the beginning of the RE or the beginning of a parenthesized
-subexpression (after a possible leading `{\bf $^$}'). Finally, single-digit back references
+subexpression (after a possible leading `{\bf \caret}'). Finally, single-digit back references
are available, and {\bf $\backslash<$} and {\bf $\backslash>$} are synonyms
for {\bf $[[:<:]]$} and {\bf $[[:>:]]$} respectively;
no other escapes are available.
\twocolitem{backslash}{'$\backslash$'}
\twocolitem{reverse-solidus}{'$\backslash$'}
\twocolitem{right-square-bracket}{'$]$'}
-\twocolitem{circumflex}{'$^$'}
-\twocolitem{circumflex-accent}{'$^$'}
+\twocolitem{circumflex}{'\caret'}
+\twocolitem{circumflex-accent}{'\caret'}
\twocolitem{underscore}{'\_'}
\twocolitem{low-line}{'\_'}
\twocolitem{grave-accent}{'`'}
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