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Be more specific about corner cases in the description of the $ RE syntax,

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and include an example where the MULTILINE flag makes a real difference.

This closes SF bug #441600.
This commit is contained in:
Fred Drake 2001-07-23 21:14:59 +00:00
parent 5e9eb98ff6
commit c547b46c06
1 changed files with 7 additions and 4 deletions
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11
Doc/lib/libre.tex
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@ -96,10 +96,13 @@ specified, this matches any character including a newline.
\item[\character{\^}] (Caret.) Matches the start of the string, and in
\constant{MULTILINE} mode also matches immediately after each newline.
\item[\character{\$}] Matches the end of the string, and in
\constant{MULTILINE} mode also matches before a newline.
\regexp{foo} matches both 'foo' and 'foobar', while the regular
expression \regexp{foo\$} matches only 'foo'.
\item[\character{\$}] Matches the end of the string or just before the
newline at the end of the string, and in \constant{MULTILINE} mode
also matches before a newline. \regexp{foo} matches both 'foo' and
'foobar', while the regular expression \regexp{foo\$} matches only
'foo'. More interestingly, searching for \regexp{foo\e d} in
'foo1\textbackslash nfoo2\textbackslash n' matches 'foo2' normally,
but 'foo1' in \constant{MULTILINE} mode.
\item[\character{*}] Causes the resulting RE to
match 0 or more repetitions of the preceding RE, as many repetitions