cvs: phpdoc /en/functions pcre.xml

goba Tue Dec 4 12:56:31 2001 EDT Modified files: /phpdoc/en/functions pcre.xml Log: No need to explicitly specify list numbers and letters here. They are implicit using the <orderedlist>... Index: phpdoc/en/functions/pcre.xml diff -u phpdoc/en/functions/pcre.xml:1.64 phpdoc/en/functions/pcre.xml:1.65 --- phpdoc/en/functions/pcre.xml:1.64 Mon Dec 3 16:58:59 2001 +++ phpdoc/en/functions/pcre.xml Tue Dec 4 12:56:31 2001 @@ -1,5 +1,5 @@ <?xml version="1.0" encoding="iso-8859-1"?> -<!-- $Revision: 1.64 $ --> +<!-- $Revision: 1.65 $ --> <reference id="ref.pcre"> <title>Regular Expression Functions (Perl-Compatible)</title> <titleabbrev>PCRE</titleabbrev> @@ -947,7 +947,7 @@ </listitem> <listitem> <simpara> - 3. Capturing subpatterns that occur inside negative looka- + Capturing subpatterns that occur inside negative looka- head assertions are counted, but their entries in the offsets vector are never set. Perl sets its numerical vari- ables from any such patterns that are matched before the @@ -958,7 +958,7 @@ </listitem> <listitem> <simpara> - 4. Though binary zero characters are supported in the sub- + Though binary zero characters are supported in the sub- ject string, they are not allowed in a pattern string because it is passed as a normal C string, terminated by zero. The escape sequence "\0" can be used in the pattern to @@ -967,7 +967,7 @@ </listitem> <listitem> <simpara> - 5. The following Perl escape sequences are not supported: + The following Perl escape sequences are not supported: \l, \u, \L, \U, \E, \Q. In fact these are implemented by Perl's general string-handling and are not part of its pat- tern matching engine. @@ -975,19 +975,19 @@ </listitem> <listitem> <simpara> - 6. The Perl \G assertion is not supported as it is not + The Perl \G assertion is not supported as it is not relevant to single pattern matches. </simpara> </listitem> <listitem> <simpara> - 7. Fairly obviously, PCRE does not support the (?{code}) + Fairly obviously, PCRE does not support the (?{code}) construction. </simpara> </listitem> <listitem> <simpara> - 8. There are at the time of writing some oddities in Perl + There are at the time of writing some oddities in Perl 5.005_02 concerned with the settings of captured strings when part of a pattern is repeated. For example, matching "aba" against the pattern /^(a(b)?)+$/ sets $2 to the value @@ -1001,7 +1001,7 @@ </listitem> <listitem> <simpara> - 9. Another as yet unresolved discrepancy is that in Perl + Another as yet unresolved discrepancy is that in Perl 5.005_02 the pattern /^(a)?(?(1)a|b)+$/ matches the string "a", whereas in PCRE it does not. However, in both Perl and PCRE /^(a)?a/ matched against "a" leaves $1 unset. @@ -1009,12 +1009,12 @@ </listitem> <listitem> <para> - 10. PCRE provides some extensions to the Perl regular + PCRE provides some extensions to the Perl regular expression facilities: <orderedlist> <listitem> <simpara> - (a) Although lookbehind assertions must match fixed length + Although lookbehind assertions must match fixed length strings, each alternative branch of a lookbehind assertion can match a different length of string. Perl 5.005 requires them all to have the same length. @@ -1022,7 +1022,7 @@ </listitem> <listitem> <simpara> - (b) If <link linkend="pcre.pattern.modifiers">PCRE_DOLLAR_ENDONLY</link> is set and + If <link linkend="pcre.pattern.modifiers">PCRE_DOLLAR_ENDONLY</link> is set and <link linkend="pcre.pattern.modifiers">PCRE_MULTILINE</link> is not set, the $ meta- character matches only at the very end of the string. @@ -1030,13 +1030,13 @@ </listitem> <listitem> <simpara> - (c) If <link linkend="pcre.pattern.modifiers">PCRE_EXTRA</link> is set, a backslash followed by a letter + If <link linkend="pcre.pattern.modifiers">PCRE_EXTRA</link> is set, a backslash followed by a letter with no special meaning is faulted. </simpara> </listitem> <listitem> <simpara> - (d) If <link linkend="pcre.pattern.modifiers">PCRE_UNGREEDY</link> is set, the greediness of the repeti- + If <link linkend="pcre.pattern.modifiers">PCRE_UNGREEDY</link> is set, the greediness of the repeti- tion quantifiers is inverted, that is, by default they are not greedy, but if followed by a question mark they are. </simpara>