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* doc/regexp.rdoc: In regexp doc, two backslashes match one literally

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In the "Metacharacters and Escapes" section of regexp.rdoc, it said that
to match a backslash literally, it must be backslash-escaped, but the
rendered HTML showed three backslashes (\\\). There should only be two
backslashes (\\).

patched by jlmuir (J. Lewis Muir) [fix GH-1677]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@60326 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
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sonots 2017-10-21 23:38:17 +00:00
parent ba9e870709
commit 71b932d675
1 changed files with 2 additions and 1 deletions
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doc/regexp.rdoc
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@ -63,9 +63,10 @@ The following are <i>metacharacters</i> <tt>(</tt>, <tt>)</tt>,
<tt>[</tt>, <tt>]</tt>, <tt>{</tt>, <tt>}</tt>, <tt>.</tt>, <tt>?</tt>,
<tt>+</tt>, <tt>*</tt>. They have a specific meaning when appearing in a
pattern. To match them literally they must be backslash-escaped. To match
a backslash literally backslash-escape that: <tt>\\\\\\</tt>.
a backslash literally, backslash-escape it: <tt>\\\\</tt>.
/1 \+ 2 = 3\?/.match('Does 1 + 2 = 3?') #=> #<MatchData "1 + 2 = 3?">
/a\\\\b/.match('a\\\\b') #=> #<MatchData "a\\b">
Patterns behave like double-quoted strings so can contain the same
backslash escapes.